CN112665111B - Fresh air fan control method and system, fresh air fan and storage medium - Google Patents
Fresh air fan control method and system, fresh air fan and storage medium Download PDFInfo
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- CN112665111B CN112665111B CN201910981039.9A CN201910981039A CN112665111B CN 112665111 B CN112665111 B CN 112665111B CN 201910981039 A CN201910981039 A CN 201910981039A CN 112665111 B CN112665111 B CN 112665111B
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention discloses a control method and a control system of a fresh air machine, the fresh air machine and a storage medium, wherein outdoor temperature is obtained and compared with first preset temperature, and when the outdoor temperature is lower than the first preset temperature, a bypass air door and a bypass motor of the fresh air machine are started; detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side; according to the current rotating speed of indoor air inlet temperature and outdoor fresh air temperature regulation bypass motor and/or the degree of opening and shutting of bypass air door, can be through the flow that changes the bypass wind channel, change the air temperature that the new fan insufflates, the decline of indoor thermal comfort and the problem of the decline of heat exchanger performance are more effectively solved, make the temperature regulation of mixed wind easily control, user's indoor thermal comfort has been improved, and effectual protection and the life who has prolonged the new fan, user experience has been promoted.
Description
Technical Field
The invention relates to the field of air conditioning equipment, in particular to a fresh air machine control method and system, a fresh air machine and a storage medium.
Background
The full heat exchanger of new trend is new fan under the low temperature operating mode operation promptly, and outdoor cold air can get into indoorly through new fan, leads to the indoor air temperature to descend very fast, can reduce indoor thermal comfort, because air temperature is lower simultaneously, can cause the heat exchanger core to appear freezing, the stifled phenomenon of ice.
The existing solution is to raise the air inlet temperature of the new fan by introducing a bypass, but the bypass air channel flow cannot be controlled, and the air volume cannot be adjusted, so that the temperature of the mixed air cannot be adjusted, and the optimal control state cannot be achieved.
Disclosure of Invention
The invention mainly aims to provide a fresh air fan control method and system, a fresh air fan and a storage medium, and aims to solve the technical problems that in the prior art, the flow of a bypass air channel cannot be controlled, the temperature of mixed air cannot be adjusted, the optimal control state cannot be achieved, and the indoor comfort is low.
In order to achieve the above object, the present invention provides a fresh air fan control method, including the steps of:
the method comprises the steps of obtaining outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result;
when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan;
detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
Preferably, the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door are adjusted according to indoor air inlet temperature with outdoor new trend temperature includes:
determining the mixed air temperature of the mixed air in the fresh air machine according to the indoor air inlet temperature and the outdoor fresh air temperature;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the mixed air temperature and a second preset temperature.
Preferably, the adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the mixed air temperature and a second preset temperature includes:
calculating the temperature difference value between the mixed air temperature and a second preset temperature;
and comparing the temperature difference value with a preset temperature difference value threshold value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to a comparison result.
Preferably, the preset temperature difference threshold includes a first preset temperature difference threshold and a second preset temperature difference threshold, the comparing the temperature difference value with the preset temperature difference threshold, and adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the comparison result includes:
comparing the temperature difference value with the first preset temperature difference threshold value and the second preset temperature difference threshold value, and generating a comparison result, wherein the second preset temperature difference threshold value is larger than the first preset temperature difference threshold value;
when the temperature difference is smaller than or equal to the first preset temperature difference threshold, increasing the rotation speed of the bypass motor and increasing the opening and closing degree of the bypass air door;
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining the variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend;
and when the temperature difference value is greater than the second preset temperature difference threshold value, the bypass motor is closed, the opening degree of the bypass air door is reduced, and the outdoor fresh air volume is increased.
Preferably, when the temperature difference value is greater than the first preset temperature difference threshold value and less than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the variation trend, includes:
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a plurality of temperature difference values of the mixed air temperature and the second preset temperature at different moments, and determining the variation trend of the temperature difference values according to the temperature difference values;
when the change trend is that the temperature difference value is gradually increased, reducing the current rotating speed of the bypass motor, reducing the opening and closing degree of a bypass air door, and increasing the outdoor fresh air volume;
and when the change trend is that the temperature difference value is gradually reduced, the current rotating speed of the bypass motor is accelerated, the opening and closing degree of a bypass air door is increased, and the outdoor fresh air volume is reduced.
Preferably, after comparing the temperature difference with a preset temperature difference threshold and adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the comparison result, the fresh air fan control method further includes:
and acquiring a current temperature difference value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door in real time according to a comparison result of the current temperature difference value and a preset temperature difference value threshold.
Preferably, after obtaining the outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result, the fresh air fan control method further includes:
and when the first comparison result shows that the outdoor temperature is not lower than the first preset temperature, keeping the current running state, and closing a bypass motor and a bypass air door.
In addition, in order to achieve the above object, the present invention further provides a new fan, including: the control system comprises a heat exchange core body, a bypass motor, a bypass air door, a storage, a processor and a fresh air machine control program which is stored in the storage and can run on the processor, wherein the fresh air machine control program is configured to realize the steps of the fresh air machine control method.
In addition, in order to achieve the above object, the present invention further provides a storage medium, where a new fan control program is stored, and the new fan control program, when executed by a processor, implements the steps of the new fan control method as described above.
In addition, in order to achieve the above object, the present invention further provides a fresh air fan control system, including:
the temperature comparison module is used for acquiring outdoor temperature, comparing the outdoor temperature with a first preset temperature and generating a first comparison result;
the starting module is used for starting a bypass air door and a bypass motor of the fresh air fan when the first comparison result shows that the outdoor temperature is lower than the first preset temperature;
the motor control module is used for detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side;
and the adjusting module is used for adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
According to the control method of the fresh air fan, the outdoor temperature is obtained, the outdoor temperature is compared with a first preset temperature, and a first comparison result is generated; when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan; detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side; according to indoor air inlet temperature with outdoor new trend temperature regulation the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can change the air temperature that new fan insufflated through the flow that changes the bypass wind channel, more effectively solves the problem of the decline of indoor thermal comfort's decline and the decline of heat exchanger performance for the temperature regulation of mixed wind easily controls, has improved user's indoor thermal comfort, and effectual protection and the life who has prolonged new fan, has promoted user experience.
Drawings
FIG. 1 is a schematic diagram of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the air supply process of the new fan;
FIG. 3 is a schematic flow chart of a first embodiment of a fresh air handling machine control method according to the present invention;
FIG. 4 is a schematic flow chart of a second embodiment of a method for controlling a fresh air machine according to the present invention;
fig. 5 is a functional block diagram of a first embodiment of a fresh air control system according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The solution of the embodiment of the invention is mainly as follows: the method comprises the steps of obtaining outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result; when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan; detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side; according to indoor air inlet temperature with outdoor new trend temperature regulation the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can change the air temperature that new fan insufflated through the flow that changes the bypass wind channel, more effectively solve the decline of indoor thermal comfort and the problem of the decline of heat exchanger performance for the temperature regulation of mixed wind is easily controlled, user's indoor thermal comfort has been improved, and effectual protection and the life who has prolonged new fan, user experience has been promoted, the wind channel flow of having solved bypass among the prior art can't be controlled, can't adjust the temperature of mixed wind, thereby can't reach the best control state, and the lower technical problem of indoor comfort.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the structure of the hardware operating environment may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) Memory or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage system separate from the processor 1001; the processor 1001, the communication bus 1002, the user interface 1003, the network interface 1004, and the memory 1005 may be disposed inside the new air blower, or may be disposed outside the new air blower, which is not limited in this embodiment.
Those skilled in the art will appreciate that the configuration of the hardware operating environment shown in FIG. 1 is not limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
Correspondingly, the fresh air machine FJ includes a heat exchange core HR, a bypass motor PD and a bypass damper PF in addition to the structure of the hardware operating environment shown in fig. 1, and fig. 2 is a schematic diagram of an air supply process of the fresh air machine according to the present invention; as shown in fig. 2, after the outdoor fresh air at the outdoor fresh air side SX flows into the fresh air blower FJ, the fresh air is heated by the heat exchange core HR and then can be mixed with the indoor return air at the indoor return air side SH, and the indoor air is blown by the indoor blower NF, and simultaneously, the bypass motor PD and the bypass damper PF can be opened to adjust the air volume of the bypass air duct, thereby adjusting the temperature of the mixed air; meanwhile, the indoor return air on the indoor return air side SH can be subjected to heat exchange through the heat exchange core body HR and then is subjected to outdoor air exhaust through the outdoor fan WF, and the arrow in the figure 2 represents the flow direction of the air.
As shown in fig. 1, the memory 1005 as a storage medium may include an operating system, a network communication module, a user side interface module, and a new computer control program.
The new fan of the present invention calls the new fan control program stored in the memory 1005 through the processor 1001, and executes the following operations:
the method comprises the steps of obtaining outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result;
when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan;
detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
Further, the processor 1001 may call a new fan control program stored in the memory 1005, and further perform the following operations:
determining the mixed air temperature of the mixed air in the fresh air machine according to the indoor air inlet temperature and the outdoor fresh air temperature;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the mixed air temperature and a second preset temperature.
Further, the processor 1001 may call the new fan control program stored in the memory 1005, and further perform the following operations:
calculating a temperature difference value between the mixed air temperature and a second preset temperature;
and comparing the temperature difference with a preset temperature difference threshold, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the comparison result.
Further, the processor 1001 may call the new fan control program stored in the memory 1005, and further perform the following operations:
comparing the temperature difference value with the first preset temperature difference threshold value and the second preset temperature difference threshold value, and generating a comparison result, wherein the second preset temperature difference threshold value is larger than the first preset temperature difference threshold value;
when the temperature difference value is smaller than or equal to the first preset temperature difference threshold value, increasing the rotating speed of the bypass motor and increasing the opening and closing degree of the bypass air door;
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining the variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend;
and when the temperature difference value is greater than the second preset temperature difference threshold value, the bypass motor is closed, the opening degree of the bypass air door is reduced, and the outdoor fresh air volume is increased.
Further, the processor 1001 may call a new fan control program stored in the memory 1005, and further perform the following operations:
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a plurality of temperature difference values of the mixed air temperature and the second preset temperature at different moments, and determining the change trend of the temperature difference values according to the temperature difference values;
when the change trend is that the temperature difference value is gradually increased, reducing the current rotating speed of the bypass motor, reducing the opening and closing degree of a bypass air door, and increasing the outdoor fresh air volume;
and when the change trend is that the temperature difference value is gradually reduced, the current rotating speed of the bypass motor is accelerated, the opening and closing degree of a bypass air door is increased, and the outdoor fresh air volume is reduced.
Further, the processor 1001 may call a new fan control program stored in the memory 1005, and further perform the following operations:
and acquiring a current temperature difference value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door in real time according to a comparison result of the current temperature difference value and a preset temperature difference value threshold value.
Further, the processor 1001 may call a new fan control program stored in the memory 1005, and further perform the following operations:
and when the first comparison result shows that the outdoor temperature is not lower than the first preset temperature, keeping the current running state, and closing a bypass motor and a bypass air door.
According to the scheme, the outdoor temperature is obtained, the outdoor temperature is compared with the first preset temperature, and a first comparison result is generated; when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan; detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side; according to indoor air inlet temperature with outdoor new trend temperature regulation the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can change the air temperature that new fan insufflated through the flow that changes the bypass wind channel, more effectively solves the problem of the decline of indoor thermal comfort's decline and the decline of heat exchanger performance for the temperature regulation of mixed wind easily controls, has improved user's indoor thermal comfort, and effectual protection and the life who has prolonged new fan, has promoted user experience.
Based on the hardware structure, the embodiment of the fresh air machine control method is provided.
Referring to fig. 3, fig. 3 is a schematic flow chart of a first embodiment of a method for controlling a fresh air machine according to the present invention.
In a first embodiment, the fresh air fan control method includes the steps of:
s10, obtaining the outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result.
It should be noted that the outdoor temperature is an outdoor temperature relative to the room where the air conditioner is located, and the outdoor temperature may be obtained by a temperature acquisition device attached to an external unit of the air conditioner, or may be obtained by a temperature sensor attached to an air conditioning pipeline outside a building, or may be obtained by other methods, which is not limited in this embodiment; the first preset temperature is a preset temperature value, and whether the outdoor temperature is lower than the first preset temperature or not can be determined by comparing the outdoor temperature with the first preset temperature.
Further, after the step S10, the fresh air fan control method further includes the steps of:
and when the first comparison result shows that the outdoor temperature is not lower than the first preset temperature, keeping the current running state, and closing a bypass motor and a bypass air door.
It should be understood that, when the first comparison result is that the outdoor temperature is not lower than the first preset temperature, that is, the outdoor temperature is higher than or equal to the first preset temperature, no additional outdoor fresh air transportation is required, the bypass motor and the bypass valve should be closed, even if the bypass motor and the bypass damper of the fresh air fan are in a closed state, and the current operation state of the fresh air fan is maintained.
And S20, starting a bypass air door and a bypass motor of the fresh air fan when the first comparison result shows that the outdoor temperature is lower than the first preset temperature.
It can be understood that the inside bypass air door and the bypass motor that are provided with of new fan the first result of comparison is that outdoor temperature is less than when first preset temperature, through the bypass air door and the bypass motor that start new fan, can open the bypass passageway of new fan makes indoor return air and outdoor new trend can mix.
And S30, detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side.
It should be understood that the amount of air in the bypass channel of the new air blower can be adjusted by generally controlling the rotation speed of the bypass motor, so that the mixed temperature of the mixed air on the indoor return air side and the outdoor new air side can be changed, and the indoor inlet air temperature and the outdoor new air temperature can be determined by detecting the temperature on the indoor return air side and the outdoor new air side.
And S40, adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
It can be understood that through indoor air inlet temperature with different control strategies can be confirmed to outdoor new trend temperature, and then adjust according to different control strategies the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door for the mixed temperature of indoor mixed air adjusts suitable temperature, and then promotes the travelling comfort of indoor thermal environment, and can reduce the energy consumption of air conditioner, has effectively protected the reliability of heat transfer core simultaneously.
According to the scheme, the outdoor temperature is obtained, the outdoor temperature is compared with the first preset temperature, and a first comparison result is generated; when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan; detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side; according to indoor air inlet temperature with outdoor new trend temperature regulation the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can change the air temperature that new fan insufflated through the flow that changes the bypass wind channel, more effectively solves the problem of the decline of indoor thermal comfort's decline and the decline of heat exchanger performance for the temperature regulation of mixed wind easily controls, has improved user's indoor thermal comfort, and effectual protection and the life who has prolonged new fan, has promoted user experience.
Further, fig. 4 is a schematic flow chart of a second embodiment of the fresh air handling machine control method according to the present invention, and as shown in fig. 4, the second embodiment of the fresh air handling machine control method according to the present invention is proposed based on the first embodiment, and in this embodiment, the step S40 specifically includes the following steps:
and S41, determining the mixed air temperature of the mixed air in the fresh air machine according to the indoor air inlet temperature and the outdoor fresh air temperature.
It should be noted that the indoor air inlet and the outdoor fresh air can be mixed in the fresh air machine, and the mixed air temperature of the mixed air in the fresh air machine is determined according to the indoor air inlet temperature and the outdoor fresh air temperature.
And S42, adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the mixed air temperature and a second preset temperature.
It can be understood that the second preset temperature is a preset temperature value, and different adjusting strategies can be determined according to a comparison result by comparing the mixed air temperature with the second preset temperature, so as to adjust the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to different adjusting strategies.
Further, the step S42 specifically includes the following steps:
calculating a temperature difference value between the mixed air temperature and a second preset temperature;
and comparing the temperature difference value with a preset temperature difference value threshold value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to a comparison result.
It should be understood that the mixed temperature and the second preset temperature may be different, a temperature difference between the mixed air temperature and the second preset temperature may be determined by calculating a temperature difference between the mixed air temperature and the second preset temperature, the preset temperature difference threshold is a preset temperature difference threshold, and by comparing the temperature difference with the preset temperature difference threshold, different adjustment vehicles may be determined, and the current rotation speed of the bypass motor and/or the opening degree of the bypass damper may be adjusted.
In specific implementation, after the operation is performed for a first preset time, a temperature difference between the mixed air temperature and the second preset temperature is detected, so that the calculated temperature difference is relatively accurate, the preferred set value of the first preset time is 2min, and certainly, the temperature difference may also be set to other time lengths, for example, a preset time in a range of 0-60min, which is not limited in this embodiment.
Further, the step of comparing the temperature difference with a preset temperature difference threshold and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the comparison result specifically comprises the following steps:
the preset temperature difference threshold comprises a first preset temperature difference threshold and a second preset temperature difference threshold;
comparing the temperature difference value with the first preset temperature difference threshold value and the second preset temperature difference threshold value, and generating a comparison result, wherein the second preset temperature difference threshold value is greater than the first preset temperature difference threshold value;
when the temperature difference value is smaller than or equal to the first preset temperature difference threshold value, increasing the rotating speed of the bypass motor and increasing the opening and closing degree of the bypass air door;
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining the variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend;
and when the temperature difference value is greater than the second preset temperature difference threshold value, the bypass motor is closed, the opening degree of the bypass air door is reduced, and the outdoor fresh air volume is increased.
It should be understood that the preset temperature difference threshold includes a first preset temperature difference threshold and a second preset temperature difference threshold, and more preset temperature difference thresholds may be set in actual operation to perform fine control, which is not limited in this embodiment; and determining different control strategies of the bypass motor and the bypass air door according to the size relationship between the temperature difference value and the first preset temperature difference threshold value and the second preset temperature difference threshold value, and further performing targeted adjustment control.
In a specific implementation, when the temperature difference value is smaller than or equal to the first preset temperature difference threshold value, a processor of the fresh air fan triggers to generate and execute a flow increasing instruction, so that the rotating speed of the bypass motor runs at the maximum rotating speed, and the temperature of the mixed air is increased; when the temperature difference value is larger than the first preset temperature difference threshold value, the bypass motor determines a corresponding adjusting strategy according to the variation trend of the temperature difference value of each mixed air temperature and the second preset temperature, and then the bypass motor and/or the bypass air door are adjusted; when the temperature difference value is larger than the second preset temperature difference threshold value, the bypass motor is closed, a processor of the new fan is triggered to generate and execute a flow closing instruction, only a bypass valve, namely a bypass air door, is opened, bypass components are reduced, outdoor new air volume is increased, and therefore the temperature of mixed air is adjusted; the preferred set values of the first preset temperature and the second preset temperature are 0 ℃, and certainly, other temperature set values may also be adopted, for example, temperatures in the range of [ -30-10 ℃ ], which is not limited in this embodiment, the preferred set value of the first preset temperature difference threshold is 5 ℃, the preferred set value of the second preset temperature difference threshold is 10 ℃, and certainly, other temperature difference set values, for example, temperatures in the range of [ -10-20 ℃ ], which is not limited in this embodiment.
Further, when the temperature difference is greater than the first preset temperature difference threshold and less than or equal to the second preset temperature difference threshold, continuously detecting the temperature of the mixed air, obtaining a variation trend of the temperature difference between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend, including:
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a plurality of temperature difference values of the mixed air temperature and the second preset temperature at different moments, and determining the change trend of the temperature difference values according to the temperature difference values;
when the change trend is that the temperature difference value is gradually increased, reducing the current rotating speed of the bypass motor, reducing the opening and closing degree of a bypass air door, and increasing outdoor fresh air volume;
and when the change trend is that the temperature difference value is gradually reduced, the current rotating speed of the bypass motor is accelerated, the opening and closing degree of a bypass air door is increased, and the outdoor fresh air volume is reduced.
In a specific implementation, when the temperature difference value is greater than the first preset temperature difference threshold value and less than or equal to the second preset temperature difference threshold value, the bypass motor reduces the current rotating speed of the bypass motor along with the increase of the difference value so that the current rotating speed is gradually reduced, and a processor of the fresh air fan triggers and generates and executes a flow reducing instruction, reduces the bypass air volume and increases the outdoor fresh air volume; and as the difference value is reduced, the current rotating speed of the bypass motor is accelerated to gradually increase the current rotating speed, the processor of the fresh air fan triggers and generates and executes a flow increasing instruction, the bypass air volume is increased, the outdoor fresh air volume is reduced, and therefore the temperature of the mixed air is adjusted rapidly.
Further, after the step S42, the fresh air fan control method further includes the steps of:
and acquiring a current temperature difference value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door in real time according to a comparison result of the current temperature difference value and a preset temperature difference value threshold value.
It should be understood that the current temperature difference value can be obtained in real time, and then different adjusting strategies are determined according to the newly obtained current temperature difference value to adjust the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door in real time; in practical operation, after the temperature difference is compared with the first preset temperature difference threshold and the second preset temperature difference threshold, and corresponding control adjustment is adopted, the current temperature difference is detected again after the operation of the second preset time, and which adjustment is performed is determined according to the detected temperature difference, where a preferred set value of the second preset time is 20min, and of course, other time lengths may also be set, for example, the preset time in a range of 0-60min, which is not limited in this embodiment.
According to the scheme, the mixed air temperature of the mixed air in the fresh air machine is determined according to the indoor inlet air temperature and the outdoor fresh air temperature; according to temperature regulation is predetermine with the second to the mixed wind temperature the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can be according to the mixed wind temperature's of mixed wind difference, the amount of wind of adaptive adjustment bypass passageway, and then has further improved user's indoor thermal comfort to effectual protection and the life who has prolonged new fan have promoted user experience.
Based on the embodiment of the fresh air fan control method, the invention further provides a fresh air fan control system.
Referring to fig. 5, fig. 5 is a functional block diagram of a first embodiment of a fresh air handling system according to the present invention.
In a first embodiment of the fresh air handling system of the present invention, the fresh air handling system includes:
the temperature comparison module 10 is configured to obtain an outdoor temperature, compare the outdoor temperature with a first preset temperature, and generate a first comparison result.
It should be noted that the outdoor temperature is an outdoor temperature relative to the room where the air conditioner is located, and the outdoor temperature may be obtained by a temperature acquisition device attached to an external unit of the air conditioner, or may be obtained by a temperature sensor attached to an air conditioning pipeline outside a building, or may be obtained by other methods, which is not limited in this embodiment; the first preset temperature is a preset temperature value, and whether the outdoor temperature is lower than the first preset temperature or not can be determined by comparing the outdoor temperature with the first preset temperature.
And the starting module 20 is used for starting a bypass air door and a bypass motor of the fresh air machine when the first comparison result shows that the outdoor temperature is lower than the first preset temperature.
It can be understood that the inside bypass air door and the bypass motor that are provided with of new fan the first result of comparison is that outdoor temperature is less than when first preset temperature, through the bypass air door and the bypass motor that start new fan, can open the bypass passageway of new fan makes indoor return air and outdoor new trend can mix.
And the motor control module 30 is used for detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side.
It should be understood that the air volume of the bypass channel of the new fan can be adjusted by controlling the rotating speed of the bypass motor, so that the mixed temperature of the mixed air of the indoor return air side and the outdoor new air side can be changed, and the indoor inlet air temperature and the outdoor new air temperature can be determined by detecting the temperature of the indoor return air side and the outdoor new air side.
And the adjusting module 40 is used for adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
It can be understood that through indoor air inlet temperature with different control strategies can be confirmed to outdoor new trend temperature, and then adjust according to different control strategies the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door for the mixed temperature of indoor mixed air adjusts suitable temperature, and then promotes the travelling comfort of indoor thermal environment, and can reduce the energy consumption of air conditioner, has effectively protected the reliability of heat transfer core simultaneously.
The steps implemented by each functional module of the fresh air control system can refer to each embodiment of the fresh air control method of the present invention, and are not described herein again.
In addition, an embodiment of the present invention further provides a storage medium, where a new fan control program is stored on the storage medium, and when executed by a processor, the new fan control program implements the following operations:
the method comprises the steps of obtaining outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result;
when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan;
detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
determining the mixed air temperature of the mixed air in the fresh air machine according to the indoor air inlet temperature and the outdoor fresh air temperature;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the mixed air temperature and a second preset temperature.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
calculating a temperature difference value between the mixed air temperature and a second preset temperature;
and comparing the temperature difference with a preset temperature difference threshold, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the comparison result.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
comparing the temperature difference value with the first preset temperature difference threshold value and the second preset temperature difference threshold value, and generating a comparison result, wherein the second preset temperature difference threshold value is larger than the first preset temperature difference threshold value;
when the temperature difference is smaller than or equal to the first preset temperature difference threshold, increasing the rotation speed of the bypass motor and increasing the opening and closing degree of the bypass air door;
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining the variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend;
and when the temperature difference value is greater than the second preset temperature difference threshold value, the bypass motor is closed, the opening degree of the bypass air door is reduced, and the outdoor fresh air volume is increased.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a plurality of temperature difference values of the mixed air temperature and the second preset temperature at different moments, and determining the variation trend of the temperature difference values according to the temperature difference values;
when the change trend is that the temperature difference value is gradually increased, reducing the current rotating speed of the bypass motor, reducing the opening and closing degree of a bypass air door, and increasing the outdoor fresh air volume;
and when the change trend is that the temperature difference value is gradually reduced, the current rotating speed of the bypass motor is accelerated, the opening and closing degree of a bypass air door is increased, and the outdoor fresh air volume is reduced.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
and acquiring a current temperature difference value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door in real time according to a comparison result of the current temperature difference value and a preset temperature difference value threshold.
Further, when being executed by the processor, the new fan control program further realizes the following operations:
and when the first comparison result shows that the outdoor temperature is not lower than the first preset temperature, keeping the current running state, and closing a bypass motor and a bypass air door.
According to the scheme, the outdoor temperature is obtained, the outdoor temperature is compared with the first preset temperature, and a first comparison result is generated; when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan; detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side; according to indoor air inlet temperature with outdoor new trend temperature regulation the current rotational speed of bypass motor and/or the degree of opening and shutting of bypass air door can change the air temperature that new fan blowd in through the flow that changes the bypass wind channel, more effectively solves the decline of indoor thermal comfort and the problem of the decline of heat exchanger performance for the temperature regulation of mixed wind is easily controlled, has improved user's indoor thermal comfort, and effectual protection and the life who has prolonged new fan have promoted user experience.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A control method of a fresh air machine is characterized in that the control method of the fresh air machine is applied to the fresh air machine, and the fresh air machine comprises the following steps: the heat exchanger comprises a heat exchange core, a bypass motor and a bypass air door, wherein the bypass air door and/or the bypass motor is used for adjusting the air quantity of a bypass air channel, the bypass air channel is arranged corresponding to the heat exchange core and is used for bypassing indoor return air passing through an indoor return air side of the heat exchange core, outdoor fresh air at an outdoor fresh air side and the indoor return air passing through the bypass air channel are mixed, then are heated by the heat exchange core and are supplied to the indoor through an indoor fan, and indoor return air at an indoor return air side is subjected to heat exchange through the heat exchange core and then is discharged to the outdoor through the outdoor fan; the fresh air fan control method comprises the following steps:
the method comprises the steps of obtaining outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result;
when the first comparison result shows that the outdoor temperature is lower than the first preset temperature, starting a bypass air door and a bypass motor of the fresh air fan;
detecting the indoor inlet air temperature of the indoor return air side and the outdoor fresh air temperature of the outdoor fresh air side;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
2. The method for controlling the fresh air handling machine according to claim 1, wherein the adjusting the current rotation speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the indoor intake air temperature and the outdoor fresh air temperature comprises:
determining the mixed air temperature of the mixed air in the fresh air machine according to the indoor inlet air temperature and the outdoor fresh air temperature;
and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the mixed air temperature and a second preset temperature.
3. The method for controlling the fresh air machine according to claim 2, wherein the adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass damper according to the mixed air temperature and a second preset temperature comprises:
calculating a temperature difference value between the mixed air temperature and a second preset temperature;
and comparing the temperature difference with a preset temperature difference threshold, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the comparison result.
4. The fresh air machine control method according to claim 3, wherein the preset temperature difference threshold value comprises a first preset temperature difference threshold value and a second preset temperature difference threshold value;
comparing the temperature difference value with a preset temperature difference value threshold value, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the comparison result, comprising the following steps:
comparing the temperature difference value with the first preset temperature difference threshold value and the second preset temperature difference threshold value, and generating a comparison result, wherein the second preset temperature difference threshold value is greater than the first preset temperature difference threshold value;
when the temperature difference is smaller than or equal to the first preset temperature difference threshold, increasing the rotation speed of the bypass motor and increasing the opening and closing degree of the bypass air door;
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining the variation trend of the temperature difference value between the mixed air temperature and the second preset temperature at different moments, and adjusting the current rotating speed of the bypass motor and/or the opening and closing degree of the bypass air door according to the variation trend;
and when the temperature difference value is greater than the second preset temperature difference threshold value, the bypass motor is closed, the opening degree of the bypass air door is reduced, and the outdoor fresh air volume is increased.
5. The method as claimed in claim 4, wherein when the temperature difference is greater than the first preset temperature difference threshold and less than or equal to the second preset temperature difference threshold, the method continuously detects the temperature of the mixed air, obtains a variation trend of the temperature difference between the temperature of the mixed air and the second preset temperature at different times, and adjusts the current rotation speed of the bypass motor and/or the opening/closing degree of the bypass damper according to the variation trend, comprising:
when the temperature difference value is larger than the first preset temperature difference threshold value and smaller than or equal to the second preset temperature difference threshold value, continuously detecting the temperature of the mixed air, obtaining a plurality of temperature difference values of the mixed air temperature and the second preset temperature at different moments, and determining the variation trend of the temperature difference values according to the temperature difference values;
when the change trend is that the temperature difference value is gradually increased, reducing the current rotating speed of the bypass motor, reducing the opening and closing degree of a bypass air door, and increasing outdoor fresh air volume;
and when the change trend is that the temperature difference value is gradually reduced, the current rotating speed of the bypass motor is accelerated, the opening and closing degree of a bypass air door is increased, and the outdoor fresh air volume is reduced.
6. The method for controlling the fresh air machine according to any one of claims 3 to 5, wherein the temperature difference is compared with a preset temperature difference threshold, and after the current rotation speed of the bypass motor and/or the opening/closing degree of the bypass damper is adjusted according to the comparison result, the method for controlling the fresh air machine further comprises:
and acquiring a current temperature difference value, and adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door in real time according to a comparison result of the current temperature difference value and a preset temperature difference value threshold value.
7. The fresh air fan control method according to any one of claims 1 to 5, wherein after obtaining the outdoor temperature, comparing the outdoor temperature with a first preset temperature, and generating a first comparison result, the fresh air fan control method further comprises:
and when the first comparison result shows that the outdoor temperature is not lower than the first preset temperature, keeping the current running state, and closing a bypass motor and a bypass air door.
8. The utility model provides a new fan control system, its characterized in that, new fan control system is applied to new fan, new fan includes: heat exchange core, bypass motor and bypass air door, bypass air door and/or bypass motor are used for adjusting the amount of wind in bypass wind channel, the bypass wind channel with the heat exchange core corresponds the setting for the bypass process the indoor return air of the indoor return air side of heat exchange core, the outdoor new trend of outdoor new trend side with pass through the indoor return air of bypass wind channel bypass is mixed the back and is passed through the heat exchange core heating to through indoor fan toward indoor air supply, the indoor return air of indoor return air side passes through behind the heat exchange core heat transfer, through outdoor fan toward outdoor airing exhaust, new fan control system includes:
the temperature comparison module is used for acquiring outdoor temperature, comparing the outdoor temperature with a first preset temperature and generating a first comparison result;
the starting module is used for starting a bypass air door and a bypass motor of the fresh air fan when the first comparison result shows that the outdoor temperature is lower than the first preset temperature;
the motor control module is used for detecting the indoor air inlet temperature of the indoor air return side and the outdoor fresh air temperature of the outdoor fresh air side;
and the adjusting module is used for adjusting the current rotating speed of the bypass motor and/or the opening degree of the bypass air door according to the indoor air inlet temperature and the outdoor fresh air temperature.
9. The utility model provides a new fan, its characterized in that, new fan includes: a heat exchange core, a bypass motor, a bypass damper, a memory, a processor and a fresh air control program stored on the memory and operable on the processor, the fresh air control program being configured to implement the steps of the fresh air control method according to any one of claims 1 to 7.
10. A storage medium having stored thereon a new fan control program, which when executed by a processor implements the steps of a new fan control method according to any one of claims 1 to 7.
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| CN113757947B (en) * | 2021-09-30 | 2023-03-03 | 海信空调有限公司 | Air conditioner control method and air conditioner |
| CN116734371A (en) * | 2022-03-10 | 2023-09-12 | 森德(中国)暖通设备有限公司 | Deep heat recovery fresh air system and anti-freezing control method thereof |
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