CN113639431B - Control method of fresh air fan and fresh air fan - Google Patents
Control method of fresh air fan and fresh air fan Download PDFInfo
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- CN113639431B CN113639431B CN202110875095.1A CN202110875095A CN113639431B CN 113639431 B CN113639431 B CN 113639431B CN 202110875095 A CN202110875095 A CN 202110875095A CN 113639431 B CN113639431 B CN 113639431B
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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
- F24F11/0001—Control or safety arrangements for ventilation
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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
- F24F11/62—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
- F24F11/72—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
- 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
- F24F2110/20—Humidity
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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
- F24F2110/64—Airborne particle content
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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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- Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
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- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the application provides a control method of a fresh air machine and the fresh air machine, wherein the control method comprises the following steps: controlling the fresh air fan to operate in an internal circulation mode; acquiring a concentration value of PM2.5 of indoor air; if the concentration value meets the preset condition, the exhaust fan is controlled to be started to enable the indoor to form negative pressure, namely, the control method can enable the indoor to form negative pressure when the PM2.5 of the air meets the preset condition, outdoor fresh air can enter the indoor through door gaps or doors and windows and can introduce fresh air to supplement oxygen, and when the air temperature is low, the outdoor fresh air enters the indoor through the door gaps or the doors and windows and cannot enter the indoor through the exchange core body.
Description
Technical Field
The application relates to the technical field of electrical equipment, in particular to a control method of a fresh air machine and the fresh air machine.
Background
In the related art, the total heat exchange fresh air fan operates in a fresh air mode under the conditions of low temperature, high humidity or other severe weather conditions, cold air enters the room through the exchange core body, so that the exchange membrane inside the exchange core body is likely to collapse or even break due to exceeding of the operation range.
Disclosure of Invention
In view of this, the embodiments of the present application are expected to provide a control method of a fresh air machine and a fresh air machine, which can introduce fresh air to supplement oxygen while preventing an exchange core of the fresh air machine from being damaged.
In order to achieve the above object, a first aspect of an embodiment of the present application provides a control method for a fresh air machine, where the control method includes:
controlling the fresh air fan to operate in an internal circulation mode;
acquiring a concentration value of PM2.5 of indoor air;
and if the concentration value meets the preset condition, controlling the air exhaust fan to be started so as to form negative pressure indoors.
In one embodiment, the preset condition is that the concentration value is equal to or less than a first concentration value.
In one embodiment, if the concentration value satisfies a preset condition, the step of controlling the exhaust fan to be turned on to form a negative pressure in the room includes:
if the concentration value is less than or equal to the first concentration value and greater than a second concentration value, controlling the exhaust fan to operate at a first windshield;
if the concentration value is less than or equal to the second concentration value, controlling the exhaust fan to operate at a second windshield;
wherein the first concentration value is greater than the second concentration value, and a wind speed of the first windshield is lower than a wind speed of the second windshield.
In one embodiment, if the concentration value is less than or equal to the first concentration value and greater than the second concentration value, the method includes the step of controlling the exhaust fan to operate on a first windshield, specifically including:
and if the concentration value is less than or equal to the first concentration value and greater than the second concentration value within a first preset time period, controlling the exhaust fan to operate by a first windshield.
In one embodiment, if the concentration value is less than or equal to the second concentration value, the step of controlling the exhaust fan to operate at a second windshield includes:
and if the concentration value is less than or equal to the second concentration value within a second preset time, controlling the exhaust fan to operate at a second windshield.
In one embodiment, before the step of obtaining the concentration value of the indoor air PM2.5 in the internal circulation mode, the method further includes:
acquiring an outdoor temperature value;
comparing the temperature value with a preset temperature value;
and controlling the operation mode of the fresh air fan according to the comparison result.
In one embodiment, the step of controlling the operation mode of the fresh air machine according to the comparison result specifically includes:
if the temperature value is smaller than the preset temperature value, controlling the fresh air fan to operate in an internal circulation mode;
and if the outdoor temperature is more than or equal to the preset temperature value, acquiring an indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air fan according to the comparison result.
In one embodiment, if the outdoor temperature is greater than or equal to the preset temperature value, the step of obtaining an indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air fan according to the comparison result specifically includes:
if the humidity value is less than or equal to the preset humidity value, controlling the fresh air fan to operate in a fresh air mode;
and if the humidity value is greater than the preset humidity value, controlling the fresh air fan to operate in an internal circulation mode.
In one embodiment, if the humidity value is greater than the preset humidity value, the control method further includes: and controlling the exhaust fan to be started and operating at a third wind shield with the wind speed lower than that of the first wind shield.
In one embodiment, the control method further comprises:
acquiring an outdoor temperature value every third preset time interval;
comparing the temperature value with a preset temperature value;
and controlling the running mode of the fresh air machine according to the comparison result.
A second aspect of the embodiments of the present application provides a new air blower, which includes a new air blower, an exhaust air blower, an internal circulation valve, a new air inlet valve, and a memory for storing a computer program that can be run on a processor, where the processor is configured to execute the steps of the control method of the new air blower when running the computer program.
The embodiment of the application provides a control method of a fresh air fan and the fresh air fan, wherein the control method is that when the fresh air fan operates in an internal circulation mode, if a concentration value of indoor air PM2.5 meets a preset condition, the exhaust fan is controlled to be started to enable indoor negative pressure to be formed, namely, when the air PM2.5 meets the preset condition, the control method enables indoor negative pressure to be formed, outdoor fresh air can enter the room through door gaps or doors and windows, fresh air can be introduced to supplement oxygen, when the air temperature is low, the fresh air can enter the room through the door gaps or the doors and windows, and does not need to enter the room through a fresh air fan exchange core.
Drawings
Fig. 1 is a schematic structural diagram of a new fan provided in an embodiment of the present application;
fig. 2 is a schematic method diagram of a control method of a fresh air machine according to an embodiment of the present application;
fig. 3 is a schematic method diagram of a method for controlling a fresh air machine according to another embodiment of the present application;
fig. 4 is a schematic flow chart of a control method of a fresh air machine according to an embodiment of the present application.
Description of the reference numerals
A fresh air fan 10; an exhaust fan 20; an internal circulation valve 30; a fresh air inlet valve 40; the switch core body 50; a housing 60; a return air inlet 60a; a return air outlet 60b; a fresh air inlet 60c; a fresh air outlet 60d; an air quality detector 70; an electronic control box 80.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
A first embodiment of the present application provides a control method for a fresh air machine, please refer to fig. 1 and fig. 2, for a fresh air machine, the control method includes:
step S101: controlling the fresh air fan to operate in an internal circulation mode;
step S102: acquiring a concentration value of PM2.5 of indoor air;
step S103: and if the concentration value meets the preset condition, controlling the exhaust fan to be started so as to form negative pressure indoors.
Step S101 is not consecutive to step S102, that is, step S101 may be executed first and then step S102 may be executed, step S102 may be executed first and then step S101 may be executed, and step S101 and step S102 may be executed simultaneously.
The second embodiment of the present application further provides a new air blower, please refer to fig. 1, which includes a new air blower 10, an exhaust air blower 20, an internal circulation valve 30, a new air inlet 60c valve 40, and a memory for storing a computer program capable of running on a processor, where the processor is configured to execute the steps of the control method described above when running the computer program.
Referring to fig. 1, the fresh air machine according to the embodiment of the present disclosure includes a fresh air blower 10, an exhaust air blower 20, an internal circulation valve 30, a fresh air inlet 60c valve 40, an exchange core 50, a casing 60, an air quality detector 70, a temperature sensor (not shown), and an electronic control box 80; the side wall of one side of the shell 60 is provided with a return air inlet 60a and a fresh air outlet 60d, the side wall of the other side opposite to the shell 60 is provided with a fresh air inlet 60c and a return air outlet 60b, the exchange core body 50 is arranged in the shell 60, a return air channel penetrating through the exchange core body 50 is formed between the return air inlet 60a and the return air outlet 60b, a fresh air channel penetrating through the exchange core body 50 is formed between the fresh air inlet 60c and the fresh air outlet 60d, the air quality detector 70 is arranged in the return air channel and positioned between the return air inlet 60a and the heat exchange core and used for detecting PM2.5 of indoor return air, and the temperature sensor is arranged in the fresh air machine close to the fresh air inlet 60c and used for detecting the temperature of outdoor fresh air which just enters the fresh air inlet 60c.
Referring to fig. 1, the return air channel is located in the upstream area of the exchange core 50 along the airflow direction and the fresh air channel is located in the upstream area of the exchange core 50 along the airflow direction and is communicated with the fresh air channel through the internal circulation valve 30, so that an internal circulation channel passing through the exchange core 50 is formed between the return air inlet 60a and the fresh air outlet 60d, when the fresh air fan is in a fresh air mode, the internal circulation channel is sealed by the internal circulation valve 30, the fresh air inlet 60c is opened by the valve 40 of the fresh air inlet 60c, outdoor fresh air enters the fresh air channel from the fresh air inlet 60c, indoor return air enters the return air channel from the return air inlet 60a, after heat exchange is performed between the fresh air in the fresh air channel and the return air in the return air channel at the exchange core 50, the fresh air enters the room from the fresh air outlet 60d, and the return air is discharged to the outside from the return air outlet 60 b.
Referring to fig. 1, when the heat exchange ventilator is in the internal circulation mode, the internal circulation valve 30 is in an open state to open the internal circulation channel, and the fresh air inlet 60c is closed by the fresh air inlet 60c valve 40. After the fresh air inlet 60c is closed, the indoor return air enters the return air inlet 60a, enters the inner circulation channel, is purified in the inner circulation channel and then enters the room through the fresh air outlet 60d, and therefore indoor air can be purified.
The control method of the embodiment of the application is that when the fresh air fan operates in an internal circulation mode, if the concentration value of the indoor air PM2.5 meets the preset condition, the exhaust fan 20 is controlled to be started to enable the indoor to form negative pressure, that is, the control method can enable the indoor to form negative pressure when the air PM2.5 meets the preset condition, so that outdoor fresh air can enter the indoor through door gaps or doors and windows and can be introduced with fresh air to supplement oxygen, and when the air temperature is low, the outdoor fresh air enters the indoor through the door gaps or the doors and windows and cannot enter the indoor through the exchange core.
Referring to fig. 1, the new air blower is controlled to operate in an internal circulation mode, that is, the internal circulation valve 30 is controlled to be in an open state, the valve 40 of the new air inlet 60c is controlled to be in a closed state, the new air blower 10 is controlled to be in an open state, the exhaust air blower 20 is controlled to be in a closed state, and when the concentration value meets a preset condition, the exhaust air blower 20 is controlled to be opened to form negative pressure in a room.
The PM2.5 refers to fine particles, namely particles with the aerodynamic equivalent diameter less than or equal to 2.5 micrometers in the ambient air, the particles can be suspended in the air for a long time, the higher the content concentration of the particles in the air is, the more serious the air pollution is, the concentration value of the PM2.5 in the indoor air meets the preset condition, namely when the quality grade of the outdoor air meets the preset condition, the exhaust fan 20 is controlled to be opened to form negative pressure in a room, so that the outdoor fresh air can enter the room through a door gap or a door window, fresh air can be introduced to supplement oxygen, and the indoor air can be clean.
The air quality detector 70 may detect a concentration value of PM2.5 in the indoor air, so as to ensure that the quality of the indoor air reaches the standard, for example, the air quality detector is disposed in the return air channel and located between the return air inlet 60a and the exchange core 50.
In an embodiment, the preset condition is that the concentration value is less than or equal to the first concentration value, that is, when the concentration value of the indoor air PM2.5 is less than or equal to the first concentration value, the exhaust fan 20 is controlled to be turned on to form negative pressure indoors, so that outdoor fresh air can enter indoors through door gaps or doors and windows, fresh air can be introduced to supplement oxygen, that is, the concentration value of the indoor air PM2.5 is detected to evaluate the quality of the outdoor air, and when the concentration value of the indoor air PM2.5 meets the preset condition, it is indicated that the quality of the outdoor air meets the requirement of introducing indoors, and further, the indoor air can be clean.
On the contrary, when the concentration value of the indoor air PM2.5 is greater than the first concentration value, that is, the concentration value does not satisfy the preset condition, the exhaust fan 20 is controlled to be in a closed state, and negative pressure is not formed indoors, thereby preventing introduction of outdoor air that does not satisfy the preset condition.
The range of the first concentration value is determined according to the local specific air quality grade, and can also be determined according to the requirements of different users, and the range of the first concentration value is 70 μ g/m for example 3 -80μg/m 3 。
In an embodiment, step S103 specifically includes: if the concentration value is less than or equal to the first concentration value and greater than the second concentration value, controlling the exhaust fan 20 to operate at a first windshield; if the concentration value is less than or equal to the second concentration value, controlling the exhaust fan 20 to operate at a second windshield; the first concentration value is larger than the second concentration value, and the wind speed of the first windshield is lower than that of the second windshield.
When the concentration value of the indoor air PM2.5 meets the preset condition, the exhaust fan 20 is controlled to be started to form negative pressure indoors, and the exhaust fan 20 can be determined to operate with different windshields according to the concentration value, it can be understood that, under the condition that the fresh air fan operates in an internal circulation mode, the higher the windshield of the exhaust fan 20, the larger the negative pressure generated indoors is, the more fresh air can be introduced, and conversely, the lower the windshield of the exhaust fan 20, the smaller the negative pressure generated indoors is, and the less fresh air can be introduced, therefore, if the concentration value is less than or equal to the first concentration value and greater than the second concentration value, the outdoor air quality level meets the preset condition of being introduced indoors, but the quality level is not very high, the exhaust fan 20 is controlled to operate with the first windshield, and a part of fresh air can be introduced; if the concentration value is less than or equal to the second concentration value and the quality grade of the outdoor air is higher, the exhaust fan 20 is controlled to operate by a second windshield, and some fresh air can be introduced properly.
The range of the second concentration value is determined according to the local specific air quality grade, and can also be determined according to the requirements of different users, and the range of the second concentration value is 30 μ g/m for example 3 -40μg/m 3 。
In one embodiment, the damper of the fresh air machine is infinitely variable, that is, the damper range of the fresh air machine is 1% -100%, and the maximum damper is 100%, wherein the range of the first damper and the range of the second damper can be determined according to the requirements of different users, for example, the range of the first damper is 20% -40%, and the range of the second damper is 40% -60%.
In one embodiment, the damper of the fresh air machine is a polar speed regulation, that is, the damper of the fresh air machine includes a plurality of gears, for example, 6 gears, the minimum damper is 1 gear, and the maximum damper is 6 gears, wherein the range of the first damper and the second damper can be determined according to the requirements of different users, for example, the range of the first damper is 2-4 gears, and the range of the second damper is 4-6 gears.
In an embodiment, if the concentration value is less than or equal to the first concentration value and greater than the second concentration value, the step of controlling the exhaust fan 20 to operate with a first windshield includes: if the concentration value is less than or equal to the first concentration value and greater than the second concentration value within the first preset time period, the exhaust fan 20 is controlled to operate on the first windshield, it can be understood that the concentration value of the indoor air PM2.5 may have a floating condition within a certain time period, in order to make the obtained concentration value more accurate, if the concentration value is less than or equal to the first concentration value and greater than the second concentration value within the first preset time period, the exhaust fan 20 is controlled to operate on the first windshield, and if the concentration value cannot maintain the first preset time period, the first concentration value is less than or equal to the first concentration value and greater than the second concentration value, the command for controlling the exhaust fan 20 to operate on the first windshield is not executed, so that the exhaust fan 20 cannot frequently execute different commands due to frequent change of the obtained concentration value.
The first preset time period may be determined according to the air quality detector 70 and an actual detection condition, and for example, the range of the first preset time period is 1min to 2min.
In an embodiment, if the concentration value is less than or equal to the second concentration value, the step of controlling the exhaust fan 20 to operate at the second windshield includes: if the concentration value is less than or equal to the second concentration value within the second preset time period, the exhaust fan 20 is controlled to operate on the second windshield, and it can be understood that the concentration value of the indoor air PM2.5 may float within a certain time period, in order to make the obtained concentration value more accurate, if the concentration value is less than or equal to the second concentration value within the second preset time period, the exhaust fan 20 is controlled to operate on the second windshield, and if the concentration value cannot be maintained within the second preset time period, the command for controlling the exhaust fan 20 to operate on the second windshield is not executed, so that the exhaust fan 20 cannot frequently execute different commands due to frequent changes of the obtained concentration value.
The second preset time period may be determined according to the air quality detector 70 and an actual detection condition, and for example, the second preset time period ranges from 1min to 2min.
In an embodiment, referring to fig. 3, before the step of controlling the fresh air fan to operate in the internal circulation mode, the method further includes:
step S201: acquiring an outdoor temperature value;
step S202: comparing the temperature value with a preset temperature value;
step S203: and controlling the running mode of the fresh air machine according to the comparison result.
Before the step of controlling the operation of the fresh air machine in the internal circulation mode, the control method of the fresh air machine according to the embodiment of the application controls the operation mode of the fresh air machine according to the comparison result of the outdoor temperature value and the preset temperature value, that is, the control method can control different operation modes of the fresh air machine when the outdoor temperature value is different, on one hand, the comfort of a user can be improved, on the other hand, the fresh air machine can be prevented from being damaged as much as possible, and further the service life of the fresh air machine is prolonged.
The preset temperature value is determined according to the actual condition of the fresh air fan, and exemplarily ranges from-10 ℃ to-5 ℃.
In an embodiment, step S203 specifically includes: if the temperature value is less than the preset temperature value, controlling the fresh air fan to operate in an internal circulation mode; and if the outdoor temperature is greater than or equal to the preset temperature value, acquiring an indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air fan according to the comparison result.
It can be understood that, if outdoor temperature value is less than preset temperature value, if the new trend gets into indoorly through exchange core 50 in a large number, exchange core 50 inside exchange membrane can collapse or even break because of exceeding the operating range, lead to the unit to have certain scope of operation, in order to comply with the demand of different climatic environment, the control method of the embodiment of the application, when outdoor temperature value is less than preset temperature value, then control new fan inner loop mode operation, stop to introduce the new trend from new trend import 60c, with indoor return air in new fan unit after purifying, send back to indoorly, can be used for dealing with microthermal bad weather condition, also can carry out cleaning process to indoor pollutant.
In addition, if the outdoor temperature is greater than or equal to the preset temperature value, the indoor humidity value is obtained, the humidity value is compared with the preset humidity value, and the operation mode of the fresh air fan is controlled according to the comparison result, namely, the control method can control different operation modes of the fresh air fan when the outdoor humidity values are different, so that the indoor humidity can be prevented from being too high, and the comfort of a user can be improved.
In one embodiment, if the outdoor temperature is greater than or equal to the preset temperature value, the step of obtaining the indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air machine according to the comparison result specifically includes: if the humidity value is smaller than or equal to the preset humidity value, controlling the fresh air fan to operate in a fresh air mode; and if the humidity value is larger than the preset humidity value, controlling the new fan to operate in an internal circulation mode.
It can be understood that, under the condition that the outdoor temperature is greater than or equal to the preset temperature value, if the outdoor humidity value is less than or equal to the preset humidity value, that is, the outdoor humidity value meets the condition that fresh air is introduced into the room, the fresh air fan is controlled to operate in a fresh air mode; and if the outdoor humidity value is larger than the preset humidity value, namely the outdoor humidity value does not meet the condition that fresh air is introduced into the room, controlling the fresh air fan to operate in an internal circulation mode.
The preset humidity value is determined according to the actual condition of the fresh air machine, and illustratively, the range of the preset humidity value is 80% -90%.
In an embodiment, if the humidity value is greater than the preset humidity value, the step of controlling the new air blower to operate in the internal circulation mode specifically includes: if the humidity value is greater than the preset humidity value, the exhaust fan 20 is controlled to operate at the third air level, it can be understood that when the humidity value is greater than the preset humidity value, the indoor humidity is relatively high, the new fan is controlled to operate in an internal circulation mode, and the exhaust fan 20 operates at the third air level, so that return air with relatively high indoor humidity can be conveniently discharged.
In one embodiment, if the humidity value is greater than the predetermined humidity value, the control method further includes: the exhaust fan 20 is controlled to be turned on and operated at a third wind speed lower than the first wind speed.
If the concentration value is less than or equal to the first concentration value and greater than the second concentration value, and the outdoor air quality level meets the preset condition of introducing the air indoors, the exhaust fan 20 is controlled to operate by a first windshield, and a part of fresh air is conveniently introduced; when the indoor humidity value is greater than the preset humidity value, the fresh air fan is controlled to operate in an internal circulation mode, the exhaust fan 20 operates at a third wind level to exhaust return air with high indoor humidity, negative pressure can be formed indoors when the exhaust fan 20 operates at the third wind level, outdoor fresh air can enter the indoor space through door gaps or doors and windows, and if the quality level of the outdoor air is low, the quality level of the indoor air is reduced due to the fact that a large amount of outdoor air enters the indoor space, therefore, in order to prevent outdoor fresh air with possibly low quality level from entering the indoor space, the wind speed of the third wind level is lower than that of the first wind level, and exemplarily, the range of the third wind level is 10% -20%.
In one embodiment, the control method further comprises: acquiring an outdoor temperature value every third preset time interval; comparing the temperature value with a preset temperature value; the operation mode of the fresh air machine is controlled according to the comparison result, the operation mode of the fresh air machine is controlled according to the comparison result of the outdoor temperature value and the preset temperature value before the step of controlling the fresh air machine to operate in the internal circulation mode, but the operation mode of the fresh air machine may need to change along with the change of the outdoor temperature value so as to prevent the outdoor air temperature from suddenly reducing, and the fresh air machine does not enter the internal circulation mode to further cause the damage of the fresh air machine, so that the outdoor temperature value is obtained at intervals of a third preset time; comparing the temperature value with a preset temperature value; and controlling the operation mode of the fresh air machine according to the comparison result.
The third preset time period is determined according to an actual application environment, and exemplarily, the third preset time period ranges from 60min to 90min.
The outdoor temperature can be detected by a temperature sensor, for example, the temperature sensor is arranged in the fresh air machine near the fresh air inlet 60c, and the outdoor fresh air enters the fresh air machine through the fresh air inlet 60c, so the temperature sensor can detect an outdoor temperature value, specifically, when the fresh air machine is in a fresh air mode, the outdoor temperature value is obtained by the temperature sensor at intervals of a third preset time, when the fresh air machine is in an inner circulation mode, the fourth preset time is opened by the valve 40 of the fresh air inlet 60c at intervals of the third preset time, and then the outdoor temperature value is obtained by the temperature sensor, wherein the range of the fourth preset time is 1-2 min.
In one embodiment, referring to fig. 4, the control method includes the following steps:
step S301: acquiring an outdoor temperature value;
specifically, the temperature sensor is disposed in the fresh air machine near the fresh air inlet 60c, and is configured to perform temperature detection on the outdoor fresh air that has just entered the fresh air inlet 60c, and perform step S301 again every third preset time interval.
Step S302: judging whether the temperature value is smaller than a preset temperature value, if so, executing step 303, and if not, executing step 309;
step S303: controlling the fresh air fan to operate in an internal circulation mode, and acquiring the concentration value of PM2.5 of indoor air;
specifically, the air quality detector 70 is disposed in the return air channel between the return air inlet 60a and the heat exchange core, and is configured to detect PM2.5 of the indoor return air.
Step S304: judging whether the concentration value is greater than the first concentration value, if so, executing a step 305, otherwise, executing a step 306;
step S305: controlling the fresh air fan to operate in an internal circulation mode;
step S306: judging whether the concentration value is greater than the second concentration value, if so, executing a step 307, and if not, executing a step 308;
step S307: controlling an exhaust fan to be started and operating with a first windshield;
step S308: controlling the air exhaust fan to be started and to run by a second windshield;
specifically, the first concentration value is greater than the second concentration value, and the wind speed of the first windshield is lower than the wind speed of the second windshield.
Step S309: acquiring an indoor humidity value;
step S310: judging whether the humidity value is less than or equal to a preset humidity value, if so, executing step 311, otherwise, executing step 312;
step S311: controlling the fresh air machine to operate in a fresh air mode;
step S312: and controlling the new air blower to operate in an internal circulation mode, and controlling the exhaust air blower to be started and operate in a third wind gear.
Specifically, the wind speed of the third damper is lower than that of the first damper.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A control method of a fresh air machine is characterized by comprising the following steps:
controlling the fresh air fan to operate in an internal circulation mode;
acquiring a concentration value of PM2.5 of indoor air;
and if the concentration value meets a preset condition, controlling an exhaust fan to be started so as to form negative pressure indoors, wherein the preset condition is that the concentration value is smaller than or equal to a first concentration value.
2. The control method according to claim 1, wherein if the concentration value satisfies a preset condition, the step of controlling the exhaust fan to be turned on to form a negative pressure in the room specifically comprises:
if the concentration value is less than or equal to the first concentration value and greater than a second concentration value, controlling the exhaust fan to operate at a first windshield;
if the concentration value is less than or equal to the second concentration value, controlling the exhaust fan to operate at a second windshield;
wherein the first concentration value is greater than the second concentration value, and a wind speed of the first windshield is lower than a wind speed of the second windshield.
3. The control method according to claim 2, wherein if the concentration value is less than or equal to the first concentration value and greater than a second concentration value, the step of controlling the exhaust fan to operate at a first damper specifically comprises:
and if the concentration value is less than or equal to the first concentration value and greater than the second concentration value within a first preset time, controlling the exhaust fan to operate by a first windshield.
4. The control method according to claim 2, wherein if the concentration value is less than or equal to the second concentration value, the step of controlling the exhaust fan to operate at a second windshield includes:
and if the concentration value is less than or equal to the second concentration value within a second preset time, controlling the exhaust fan to operate at a second windshield.
5. The control method of claim 1, further comprising, prior to the step of controlling the fresh air machine to operate in an internal circulation mode:
acquiring an outdoor temperature value;
comparing the temperature value with a preset temperature value;
and controlling the operation mode of the fresh air fan according to the comparison result.
6. The control method according to claim 5, wherein the step of controlling the operation mode of the fresh air machine according to the comparison result specifically comprises:
if the temperature value is smaller than the preset temperature value, controlling the fresh air fan to operate in an internal circulation mode;
and if the outdoor temperature is more than or equal to the preset temperature value, acquiring an indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air fan according to the comparison result.
7. The control method according to claim 6, wherein if the outdoor temperature is greater than or equal to the preset temperature value, the step of obtaining an indoor humidity value, comparing the humidity value with the preset humidity value, and controlling the operation mode of the fresh air blower according to the comparison result specifically includes:
if the humidity value is smaller than or equal to the preset humidity value, controlling the fresh air fan to operate in a fresh air mode;
and if the humidity value is greater than the preset humidity value, controlling the fresh air fan to operate in an internal circulation mode.
8. The control method according to claim 7, wherein if the humidity value is greater than the preset humidity value, the control method further comprises:
and controlling the exhaust fan to be started and operating at a third wind shield with the wind speed lower than that of the first wind shield.
9. The control method according to claim 5, characterized by further comprising:
acquiring an outdoor temperature value every third preset time interval;
comparing the temperature value with a preset temperature value;
and controlling the operation mode of the fresh air fan according to the comparison result.
10. A new fan, characterized by comprising a new fan, an exhaust fan, an internal circulation valve, a new air inlet valve, and a memory for storing a computer program capable of running on a processor, wherein the processor is configured to execute the steps of the new fan control method according to any one of claims 1 to 9 when running the computer program.
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| CN115468288A (en) * | 2022-09-27 | 2022-12-13 | Tcl空调器(中山)有限公司 | Fresh air conditioner and control method thereof |
| CN116007150A (en) * | 2022-12-12 | 2023-04-25 | 珠海格力电器股份有限公司 | Ventilation control method and control device thereof |
| CN115978760A (en) * | 2023-01-04 | 2023-04-18 | 小米科技(武汉)有限公司 | Control method and device of air conditioner, electronic equipment and air conditioner |
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