Fresh air ventilator control method, device and equipment and storage medium

Abstract

The invention discloses a fresh air ventilator control method and device, equipment and a storage medium. The method comprises the steps that first information is obtained; the first information comprises a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct; according to the first temperature and the second temperature, outdoor air is controlled to be exhausted indoors from the first air duct, indoor air is controlled to be exhausted outdoors from target air ducts, and the target air ducts comprise the second air duct and / or the third air duct; and the energy consumption of the indoor air discharged to the outside from the second air duct and / or the third air duct is different.

Description

Technical Field

[0001] The present application relates to, but is not limited to, the field of air treatment technologies, and particularly relates to a control method, device, equipment, and storage medium for a fresh air fan. Background Art

[0002] Currently, with the widespread application of fresh air fans and the demand for energy conservation and consumption reduction, the operating modes of fresh air fans have become increasingly complex, and the switching and regulation operations between different operating modes require strong professionalism. In related technologies, the energy-saving control of each component of the fresh air fan is carried out manually, so it has relatively high requirements for the user's professional knowledge. Generally, users use random operations to control the operation of each component of the fresh air fan, and effective energy-saving control cannot be achieved. Summary of the Invention

[0003] The present application provides a control method, device, equipment, and storage medium for a fresh air fan, which solves the problem that in related technologies, users use random operations to control the operation of each component of the fresh air fan and cannot achieve effective energy-saving control.

[0004] The technical solution of the present application is implemented as follows:

[0005] A control method for a fresh air fan, the method includes:

[0006] Obtain first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct;

[0007] According to the first temperature and the second temperature, control the outdoor air to be discharged into the room from the first air duct, and control the indoor air to be discharged to the outside from the target air duct, the target air duct includes the second air duct and / or the third air duct; the energy consumption required for the indoor air to be discharged to the outside from the second air duct and / or the third air duct is different.

[0008] A control device for a fresh air fan, the device includes:

[0009] An obtaining module, configured to obtain first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct;

[0010] A control module, configured to control the outdoor air to be discharged into the room from the first air duct and control the indoor air to be discharged to the outside from the target air duct according to the first temperature and the second temperature, the target air duct includes the second air duct and / or the third air duct; the energy consumption required for the indoor air to be discharged to the outside from the second air duct and / or the third air duct is different.

[0011] A control equipment for a fresh air fan, the equipment includes:

[0012] A memory for storing executable instructions;

[0013] A processor for executing the executable instructions stored in the memory to implement the control method of the above-mentioned fresh air fan.

[0014] A storage medium storing one or more programs, where the one or more programs can be executed by one or more processors to implement the steps of the control method of the above-mentioned fresh air fan.

[0015] A control method, device, equipment and storage medium for a fresh air fan provided by an embodiment of the present application. The method includes: obtaining first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct; according to the first temperature and the second temperature, controlling the outdoor air to be discharged into the room from the first air duct, and controlling the indoor air to be discharged to the outside from the target air duct, where the target air duct includes the second air duct and / or the third air duct; the energy consumption required for the indoor air to be discharged to the outside from the second air duct and / or the third air duct is different; it solves the problem in the related art that users use random operations to control the operation of each component of the fresh air fan and cannot achieve effective energy-saving control. The present application uses the fresh air temperature and the return air temperature as the basis, adopts intelligent control means, automatically adjusts each component of the fresh air fan, and can selectively control the indoor air to be discharged to the outside from the exhaust air duct and / or discharged to the outside through the bypass air duct, so that the indoor air is automatically shunted when flowing through the exhaust air duct and / or the bypass air duct, thereby reducing the air flow resistance generated when all the exhaust air flows through the heat exchange device of the exhaust air duct, effectively reducing the energy consumption, and achieving energy saving. Description of the Drawings

[0016] Figure 1 It is a schematic flow chart of a control method for a fresh air fan provided by an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of a control device for a fresh air fan provided by an embodiment of the present application Figure 1 ;

[0018] Figure 3 It is a schematic diagram of a control device for a fresh air fan provided by an embodiment of the present application;

[0019] Figure 4 It is a schematic diagram of the structure of a fresh air fan provided by an embodiment of the present application Figure 1 ;

[0020] Figure 5 It is a schematic diagram of the structure of a fresh air fan provided by an embodiment of the present application Figure 2 ;

[0021] Figure 6Schematic flowchart of an intelligent adjustment method for a fresh air fan provided by an embodiment of the present application;

[0022] Figure 7 Schematic diagram of a control device for a fresh air fan provided by an embodiment of the present application Figure 2 . Specific embodiments

[0023] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be construed as limiting the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0024] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0025] In the following description, the terms "first / second / third" are only used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence when permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0027] An embodiment of the present application provides a control method for a fresh air fan. Referring to Figure 1 as shown, the method includes the following steps:

[0028] Step 101: Obtain first information.

[0029] Among them, the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct.

[0030] In an embodiment of the present application, the first air duct includes the fresh air duct of the fresh air fan, and the second air duct includes the exhaust air duct of the fresh air fan. It can be understood that obtaining the first information includes obtaining the fresh air temperature at the air inlet of the fresh air duct and the return air temperature at the air inlet of the exhaust air duct.

[0031] Understandably, the execution subject of this embodiment is the above-mentioned fresh air fan, which has functions such as data processing, data communication, and program operation. Generally, the operation of each component in the fresh air fan can be driven by a core controller. Therefore, the execution subject of this embodiment can also be the core controller in the above-mentioned fresh air fan, and this core controller can be a processor.

[0032] Step 102: Control the outdoor air to be discharged into the room from the first air duct according to the first temperature and the second temperature, and control the indoor air to be discharged to the outside from the target air duct.

[0033] Among them, the target air duct includes the second air duct and / or the third air duct; the energy consumption required for the indoor air to be discharged to the outside from the second air duct and / or the third air duct is different.

[0034] In the embodiment of the present application, the third air duct includes the bypass air duct of the fresh air fan, and no heat exchange device is provided in the bypass air duct; the second air duct includes the exhaust air duct of the fresh air fan, and a heat exchange device is provided in the exhaust air duct. Understandably, when controlling the indoor air to be discharged to the outside from the exhaust air duct, it will flow through the heat exchange device in the exhaust air duct, resulting in a large air flow resistance when the exhaust air flow passing through the exhaust air duct passes through the heat exchange device, and the required energy consumption is relatively high; when controlling the indoor air to be directly discharged to the outside from the bypass air duct, the air flow resistance is small, and the required energy consumption is low.

[0035] In the embodiment of the present application, according to the obtained fresh air temperature at the air inlet of the fresh air duct and the return air temperature at the air inlet of the exhaust air duct, control the outdoor air to be discharged into the room from the fresh air duct of the fresh air fan, and control the indoor air to be discharged to the outside from the exhaust air duct, so that the exhaust air flow passing through the exhaust air duct exchanges heat with the fresh air flow passing through the fresh air duct near the heat exchange device, promoting the transfer of heat from the side of the air flow with a higher temperature to the other side of the air flow with a lower temperature, balancing the indoor and outdoor temperatures, and realizing the energy recovery of the indoor and outdoor environments.

[0036] In the embodiment of the present application, according to the obtained fresh air temperature at the air inlet of the fresh air duct and the return air temperature at the air inlet of the exhaust air duct, control the outdoor air to be discharged into the room from the fresh air duct of the fresh air fan, and control the indoor air to be discharged to the outside from the bypass air duct, so that the exhaust air flow is directly discharged to the outside without passing through the heat exchange device after flowing through the bypass air duct. When controlling the indoor air to be discharged to the outside through the fresh air fan, the air flow resistance is small, the required energy consumption is low, and energy saving is realized.

[0037] In the embodiments of the present application, according to the fresh air temperature at the air inlet of the fresh air duct and the return air temperature at the air inlet of the exhaust air duct obtained, the outdoor air is controlled to be discharged into the room from the fresh air duct of the fresh air machine, and the indoor air is controlled to be discharged to the outdoor from the exhaust air duct and the bypass air duct, so that when a part of the exhaust air flow passes through the exhaust air duct, heat exchange is carried out with the fresh air flow passing through the fresh air duct near the heat exchange device and then discharged to the outdoor, and another part of the exhaust air flow is directly discharged to the outdoor without passing through the heat exchange device after passing through the bypass air duct, so that while realizing the energy recovery of the indoor and outdoor environment, the air flow resistance when the indoor air is discharged to the outdoor through the fresh air machine is reduced, the energy consumption is reduced, and energy conservation is realized.

[0038] A control method for a fresh air machine provided by an embodiment of the present application includes: obtaining first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of a first air duct; the second temperature indicates the return air temperature at the air inlet of a second air duct; according to the first temperature and the second temperature, controlling the outdoor air to be discharged into the room from the first air duct, and controlling the indoor air to be discharged to the outdoor from a target air duct, the target air duct including the second air duct and / or a third air duct; the energy consumption required for the indoor air to be discharged to the outdoor from the second air duct and / or the third air duct is different; the problem that in the related art, users use random operations to control the operation of each component of the fresh air machine and cannot achieve effective energy-saving control is solved. Based on the fresh air temperature and the return air temperature, the present application adopts an intelligent control means to automatically adjust each component of the fresh air machine, and selectively controls the indoor air to be discharged to the outdoor from the exhaust air duct and / or through the bypass air duct, so that the indoor air is automatically shunted when passing through the exhaust air duct and / or the bypass air duct, thereby reducing the air flow resistance generated when all the exhaust air flow passes through the heat exchange device of the exhaust air duct, effectively reducing the energy consumption, and realizing energy conservation.

[0039] In some embodiments of the present application, in step 102, according to the first temperature and the second temperature, controlling the outdoor air to be discharged into the room from the first air duct, and controlling the indoor air to be discharged to the outdoor from the target air duct can be achieved through the following steps:

[0040] If the first temperature and the second temperature meet the first temperature difference condition, control the outdoor air to be discharged into the room from the first air duct, and control the indoor air to be discharged to the outdoor from the second air duct.

[0041] In the embodiments of the present application, if the difference between the fresh air temperature and the return air temperature is greater than the first temperature difference threshold, it indicates that at this time, there is a large difference between the fresh air temperature of the fresh air introduced from the outside and the return air temperature of the polluted air discharged from the room. This generally occurs in winter or summer, that is, during the period when the indoor-outdoor temperature difference is large. At this time, while controlling the outdoor air to be discharged into the room from the fresh air duct through the heat exchange device, the indoor air is controlled to be discharged to the outside from the exhaust duct through the heat exchange device, so that the outdoor air and the indoor air exchange heat near the heat exchange device, realizing the energy recovery and utilization of the indoor air.

[0042] In a winter environment, control the relatively cold fresh air outside to be discharged into the room from the fresh air duct to form a fresh air flow with a lower temperature, and control the relatively hot polluted air inside to be discharged to the outside from the exhaust duct to form a return air flow with a higher temperature. The fresh air flow and the return air flow flow in opposite directions near the heat exchange device to exchange heat, so that the heat is conducted from the side of the return air flow with a higher temperature to the side of the fresh air flow with a lower temperature, realizing the heat recovery and utilization of the indoor air.

[0043] In a summer environment, control the relatively hot fresh air outside to be discharged into the room from the fresh air duct to form a fresh air flow with a higher temperature, and control the relatively cold polluted air inside to be discharged to the outside from the exhaust duct to form a return air flow with a lower temperature. The fresh air flow and the return air flow flow in opposite directions near the heat exchange device to exchange heat, so that the heat is conducted from the side of the fresh air flow with a higher temperature to the side of the return air flow with a lower temperature, realizing the cooling capacity recovery and utilization of the indoor air.

[0044] Exemplarily, if the difference between the fresh air temperature and the return air temperature is greater than 8°C, it indicates that it is in a winter or summer environment at this time. Control the outdoor air to be discharged into the room from the fresh air duct, and control the indoor air to be discharged to the outside from the exhaust duct, so that the outdoor air and the indoor air exchange energy near the heat exchange device in the duct, realizing the energy recovery of the indoor air and achieving energy conservation.

[0045] In some embodiments of the present application, the first information further includes a third temperature, and the third temperature indicates the supply air temperature at the air outlet of the first duct. In step 102, according to the first temperature and the second temperature, controlling the outdoor air to be discharged into the room from the first duct and controlling the indoor air to be discharged to the outside from the target duct can also be achieved through the following steps:

[0046] Determine the sensible heat exchange efficiency according to the first temperature, the second temperature and the third temperature;

[0047] According to the sensible heat exchange efficiency, control the outdoor air to be discharged into the room from the first duct and control the indoor air to be discharged to the outside from the second duct.

[0048] Among them, the third temperature includes the supply air temperature at the air outlet of the fresh air duct.

[0049] In the embodiments of the present application, the sensible heat exchange efficiency is determined based on the fresh air temperature, the return air temperature, and the supply air temperature, and can be calculated using the following formula:

[0050]

[0051] where η wd = is the sensible heat exchange efficiency, 100%;

[0052] T OA is the fresh air temperature, in °C;

[0053] T RA is the return air temperature, in °C;

[0054] T SA is the supply air temperature, in °C.

[0055] Further, in some embodiments of the present application, based on the sensible heat exchange efficiency, controlling the outdoor air to be discharged into the room from the first air duct and controlling the indoor air to be discharged to the outdoor from the second air duct can be achieved through the following steps:

[0056] If the sensible heat exchange efficiency meets the first numerical range, control the fresh air fan to start at the first speed for the first duration, discharge the outdoor air into the room from the first air duct, and control the exhaust fan to start at the second speed for the first duration, discharge the indoor air to the outdoor from the second air duct; the second speed is less than the first speed.

[0057] In the embodiments of the present application, the first numerical range includes the range where the sensible heat exchange efficiency is relatively large. If the sensible heat exchange efficiency falls within the first numerical range, control the fresh air fan to start at the first speed for the first duration, discharge the outdoor air into the room from the fresh air duct. At the same time, control the exhaust fan to start at the second speed, which is less than the first speed, for the first duration, discharge the indoor air to the outdoor from the exhaust duct, so as to control the fresh air volume to be greater than the exhaust air volume, keep the room at a positive pressure, and prevent outdoor air from entering the room through gaps such as door seams, in order to reduce the sensible heat exchange efficiency.

[0058] In the embodiments of the present application, the range where the sensible heat exchange efficiency is relatively large may include one of the following two situations: the range where the sensible heat exchange efficiency is significantly large, the range where the sensible heat exchange efficiency is slightly large.

[0059] In one case of the embodiments of the present application, when the sensible heat exchange efficiency falls within the range where the sensible heat exchange efficiency is significantly large, adjust the fresh air fan to the fast air intake mode, control the speed of the fresh air fan to be significantly greater than the speed of the exhaust fan, so that the fresh air volume is significantly greater than the exhaust air volume. At this time, the room can maintain a positive pressure state, and outdoor air cannot enter the room through gaps such as door seams, and the sensible heat exchange efficiency can be quickly reduced.

[0060] In another case of the embodiments of the present application, when the sensible heat exchange efficiency falls within the range where the sensible heat exchange efficiency is slightly on the high side, the fresh air fan is adjusted to the slow air intake mode, and the rotational speed of the fresh air fan is controlled to be slightly greater than the rotational speed of the exhaust fan, so that the fresh air volume is slightly greater than the exhaust air volume. At this time, the indoor can maintain a slightly positive pressure state, and outdoor air can enter the room through gaps such as door seams, which can slowly reduce the sensible heat exchange efficiency.

[0061] Exemplarily, if the difference between the fresh air temperature and the return air temperature is 10°C, which is greater than 8°C, it indicates that it is in a winter or summer environment at this time. Further, when it is determined that the sensible heat exchange efficiency is higher than 85%, the fresh air fan is controlled to start at a rotational speed of 1500 revolutions per minute (r / min) for 30 minutes, and the outdoor air is discharged into the room from the fresh air duct, and the exhaust fan is controlled to start at a rotational speed of 1000 r / min for 30 minutes, and the indoor air is discharged to the outside from the exhaust duct. This can effectively increase the fresh air volume, maintain a positive pressure indoors, reduce the sensible heat exchange efficiency, approach the optimal range of the sensible heat efficiency, and achieve a better energy-saving effect.

[0062] In some embodiments of the present application, according to the sensible heat exchange efficiency, controlling the outdoor air to be discharged into the room from the first duct and controlling the indoor air to be discharged to the outside from the second duct can also be achieved through the following steps:

[0063] If the sensible heat exchange efficiency satisfies the second numerical range, control the fresh air fan to start at the third rotational speed for the second duration, discharge the outdoor air into the room from the first duct, and control the exhaust fan to start at the fourth rotational speed for the second duration, discharge the indoor air to the outside from the second duct; the fourth rotational speed is greater than the third rotational speed.

[0064] In the embodiments of the present application, the second numerical range includes the range where the sensible heat exchange efficiency is on the low side. If the sensible heat exchange efficiency falls within the second numerical range, control the fresh air fan to start at the third rotational speed for the second duration, discharge the outdoor air into the room from the fresh air duct. At the same time, control the exhaust fan to start at the fourth rotational speed greater than the third rotational speed for the second duration, discharge the indoor air to the outside from the exhaust duct, so as to control the exhaust air volume to be greater than the fresh air volume, keep the indoor negative pressure, and guide the outdoor air to enter the room through gaps such as door seams to improve the sensible heat exchange efficiency.

[0065] In the embodiments of the present application, the range where the sensible heat exchange efficiency is on the low side may include one of the following two situations: the range where the sensible heat exchange efficiency is significantly on the low side, the range where the sensible heat exchange efficiency is slightly on the low side.

[0066] In one case of the embodiments of the present application, when the sensible heat exchange efficiency falls within the range where the sensible heat exchange efficiency is significantly on the low side, the fresh air fan is adjusted to the fast exhaust mode, and the rotational speed of the exhaust fan is controlled to be significantly greater than the rotational speed of the fresh air fan, so that the exhaust air volume is significantly greater than the fresh air volume. At this time, the indoor can maintain a negative pressure state, guide the outdoor air to enter the room through gaps such as door seams, and can quickly improve the sensible heat exchange efficiency.

[0067] In another case of the embodiments of the present application, when the sensible heat exchange efficiency falls within the range where the sensible heat exchange efficiency is slightly on the low side, the fresh air fan is adjusted to the slow exhaust mode, and the exhaust fan speed is controlled to be slightly greater than the fresh air fan speed, so that the exhaust air volume is slightly greater than the fresh air volume. At this time, the indoor can maintain a slightly negative pressure state, and outdoor air can enter the indoor through gaps such as door seams, which can slowly reduce the sensible heat exchange efficiency.

[0068] Exemplarily, if the difference between the fresh air temperature and the return air temperature is 13°C, which is greater than 8°C, it indicates that it is in a winter or summer environment at this time. Further, when it is determined that the sensible heat exchange efficiency is lower than 80%, the fresh air fan is controlled to start at a speed of 1000 revolutions per minute (r / min) for 40 minutes, discharging outdoor air from the fresh air duct into the indoor, and the exhaust fan is controlled to start at a speed of 1000 r / min for 40 minutes, discharging indoor air from the exhaust duct to the outdoor, effectively increasing the exhaust air volume, maintaining the indoor negative pressure, so as to improve the sensible heat exchange efficiency, approaching the optimal range of the sensible heat efficiency, in order to achieve a better energy-saving effect.

[0069] In some embodiments of the present application, according to the sensible heat exchange efficiency, controlling outdoor air to be discharged into the indoor from the first duct and controlling indoor air to be discharged to the outdoor from the second duct can also be achieved through the following steps:

[0070] If the sensible heat exchange efficiency satisfies the third numerical range, control the fresh air fan to start at the fifth speed for the third duration, discharging outdoor air from the first duct into the indoor, and control the exhaust fan to start at the fifth speed for the third duration, discharging indoor air from the second duct to the outdoor; the fifth speed is the speed determined according to the sensible heat exchange efficiency that satisfies the third numerical range.

[0071] In the embodiments of the present application, the third numerical range includes the optimal range of the sensible heat exchange efficiency. If the sensible heat exchange efficiency falls within the third numerical range, determine the fifth speed corresponding to the optimal sensible heat exchange efficiency, control the fresh air fan to start at the fifth speed for the third duration, discharging outdoor air from the fresh air duct into the indoor, and control the exhaust fan to start at the same fifth speed for the third duration, discharging indoor air from the exhaust duct to the outdoor, so as to control the exhaust air volume to be equal to the fresh air volume, in order to maintain the sensible heat exchange efficiency in the current optimal state.

[0072] In the embodiments of the present application, the fifth speed is the speed determined according to the optimal sensible heat exchange efficiency. The fifth speed includes but is not limited to: the set speed pre-set by the user according to the optimal sensible heat exchange efficiency, the speed calculated according to the current indoor-outdoor temperature difference and the optimal sensible heat exchange efficiency, and can be set according to actual needs. The present application does not make specific limitations thereto.

[0073] Exemplarily, if the difference between the fresh air temperature and the return air temperature is 12°C, which is greater than 8°C, it indicates that it is in a winter or summer environment. Further, when it is determined that the sensible heat exchange efficiency is between 80% and 85%, it indicates that it is in the optimal efficiency range. Control the fresh air unit to maintain the heat exchange mode for a period of time. Control the fresh air fan to start at a speed of 1200 revolutions per minute (r / min) for 35 minutes, discharge the outdoor air from the fresh air duct into the room, and control the exhaust fan to start at a speed of 1200 r / min for 35 minutes, discharge the indoor air from the exhaust duct to the outside, so that the fresh air volume and the exhaust air volume are kept as consistent as possible. When the sensible heat exchange efficiency fluctuates, give priority to increasing the speed of the fresh air fan to ensure the freshness of the indoor air. By obtaining the temperature and the sensible heat exchange efficiency in real time, automatically adjust the speeds of the fresh air fan and the exhaust fan to maintain the sensible heat exchange efficiency within the optimal efficiency range, intelligently reducing the equipment energy consumption during the operation of the fresh air unit and achieving energy saving.

[0074] Exemplarily, the ratio of the fresh air volume to the exhaust air volume can be maintained between 0.8 and 1.2, so that when the indoor environmental air pressure fluctuates, it will not affect the user's comfort. Based on this, when the sensible heat exchange efficiency is higher than 85%, there is a maximum fresh air speed judgment limit. When the sensible heat exchange efficiency is lower than 80%, there is a maximum exhaust air speed judgment limit. When the sensible heat exchange efficiency falls between 80% and 85%, there is a requirement to maintain the speeds of the fresh air unit and the exhaust fan.

[0075] In some embodiments of the present application, in step 102, according to the first temperature and the second temperature, controlling the outdoor air to be discharged from the first duct into the room and controlling the indoor air to be discharged from the target duct to the outside can also be achieved through the following steps:

[0076] If the first temperature and the second temperature meet the second temperature difference condition, control the outdoor air to be discharged from the first duct into the room and control the indoor air to be discharged from the third duct to the outside.

[0077] In the embodiments of the present application, if the difference between the fresh air temperature and the return air temperature is less than or equal to the second temperature difference threshold, it indicates that the difference between the fresh air temperature of the fresh air introduced from the outside and the return air temperature of the dirty air discharged from the room is relatively small, which generally occurs in spring and autumn, that is, the transitional season with a small indoor-outdoor temperature difference. At this time, while controlling the outdoor air to be discharged from the fresh air duct into the room, control the indoor air to be discharged from the bypass duct to the outside, reducing the air flow resistance generated when controlling the indoor air to pass through the heat exchange device of the exhaust duct, which is beneficial to reducing the equipment energy consumption during the operation of the fresh air unit, further achieving energy saving and improving the service life of the equipment.

[0078] In an embodiment of the present application, in another case, if the difference between the fresh air temperature and the return air temperature is less than or equal to the second temperature difference threshold, control the outdoor air to be discharged into the room from the fresh air duct, and control the indoor air to be discharged to the outside from the exhaust duct and the bypass duct. At this time, control the outdoor air to be discharged into the room from the fresh air duct, and control the indoor air to be discharged to the outside from the exhaust duct and the bypass duct. In this way, while part of the indoor air is discharged to the outside through the exhaust duct, another part of the indoor air is shunted through the bypass duct, reducing the air flow resistance generated when the indoor air passes through the heat exchange device in the exhaust duct, which is beneficial to reducing the equipment energy consumption during the operation of the fresh air machine, further achieving energy saving, and improving the service life of the equipment.

[0079] Exemplarily, if the difference between the fresh air temperature and the return air temperature is less than or equal to 8°C, it indicates that it is in the transition season at this time. Control the outdoor air to be discharged into the room from the fresh air duct, and control part of the indoor air to be discharged to the outside from the bypass duct, so that part of the indoor air can be directly transported to the outside without passing through the heat exchange device, reducing the air flow resistance when the air flows through the duct, reducing the equipment energy consumption during the operation of the fresh air machine, and improving the service life of the equipment.

[0080] Further, in some embodiments of the present application, controlling the indoor air to be discharged to the outside from the third duct can be achieved through the following steps:

[0081] Control the bypass valve to open for a fourth duration, and discharge the indoor air from the third duct to the outside.

[0082] Wherein, the fourth duration is the duration determined according to the first temperature and the second temperature that satisfy the second temperature difference condition.

[0083] In an embodiment of the present application, in an actual scenario where the bypass valve is arranged at the air inlet of the exhaust duct, the bypass valve is usually in a closed state. If the difference between the fresh air temperature and the return air temperature is less than or equal to the second temperature difference threshold, it indicates that it is in the transition season at this time. According to the current fresh air temperature and the current return air temperature, determine the fourth duration of the operation of the fresh air machine, and then control the bypass valve to open for the fourth duration to discharge the indoor air from the bypass duct to the outside, reducing the air flow resistance generated when controlling the indoor air to pass through the heat exchange device in the exhaust duct, which is beneficial to reducing the equipment energy consumption during the operation of the fresh air machine, further achieving energy saving, and improving the service life of the equipment.

[0084] It can be understood that in another actual scenario where the bypass valve is arranged at the air inlet of the fresh air duct, if the difference between the fresh air temperature and the return air temperature is less than or equal to the second temperature difference threshold, it indicates that it is in the transition season at this time. Control the bypass valve to open for the fourth duration, and discharge the outdoor air from the bypass duct into the room, reducing the air flow resistance generated when controlling the outdoor air to pass through the heat exchange device in the fresh air duct, which is beneficial to reducing the equipment energy consumption during the operation of the fresh air machine, further achieving energy saving, and improving the service life of the equipment.

[0085] Exemplarily, if the difference between the fresh air temperature and the return air temperature is less than or equal to 8°C, it indicates that it is in the transition season at this time. Determine that the working duration of the fresh air unit corresponding to the current fresh air temperature and the current return air temperature is 1 hour. Further, control the bypass air valve to open for 1 hour, control the outdoor air to be discharged from the fresh air duct into the room, and control the indoor air to be discharged from the bypass air duct to the outside.

[0086] An embodiment of the present application provides a control device 200 for a fresh air unit. Referring to Figure 2 as shown, the control device 200 of the fresh air unit includes: an acquisition module 201 and a control module 202; wherein,

[0087] The acquisition module 201 is configured to acquire first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct.

[0088] The control module 202 is configured to control the outdoor air to be discharged from the first air duct into the room according to the first temperature and the second temperature, and control the indoor air to be discharged from the target air duct to the outside. The target air duct includes the second air duct and / or the third air duct; the energy consumption required for the indoor air to be discharged from the second air duct and / or the third air duct to the outside is different.

[0089] The control module 202 is configured to, if the first temperature and the second temperature meet the first temperature difference condition, control the outdoor air to be discharged from the first air duct into the room, and control the indoor air to be discharged from the second air duct to the outside.

[0090] The acquisition module 201 is configured to acquire first information, and the first information further includes a third temperature, and the third temperature indicates the supply air temperature at the air outlet of the first air duct.

[0091] The control module 202 is configured to determine the sensible heat exchange efficiency according to the first temperature, the second temperature and the third temperature.

[0092] The control module 202 is configured to control the outdoor air to be discharged from the first air duct into the room according to the sensible heat exchange efficiency, and control the indoor air to be discharged from the second air duct to the outside.

[0093] The control module 202 is configured to, if the sensible heat exchange efficiency meets the first numerical range, control the fresh air fan to start at the first speed for the first duration to discharge the outdoor air from the first air duct into the room, and control the exhaust fan to start at the second speed for the first duration to discharge the indoor air from the second air duct to the outside; the second speed is less than the first speed.

[0094] The control module 202 is configured to, if the sensible heat exchange efficiency meets the second numerical range, control the fresh air fan to start at the third speed for the second duration, discharge outdoor air from the first air duct into the room, and control the exhaust air fan to start at the fourth speed for the second duration, discharge indoor air from the second air duct to the outside; the fourth speed is greater than the third speed.

[0095] The control module 202 is configured to, if the sensible heat exchange efficiency meets the third numerical range, control the fresh air fan to start at the fifth speed for the third duration, discharge outdoor air from the first air duct into the room, and control the exhaust air fan to start at the fifth speed for the third duration, discharge indoor air from the second air duct to the outside; the fifth speed is the speed determined according to the sensible heat exchange efficiency that meets the third numerical range.

[0096] The control module 202 is configured to, if the first temperature and the second temperature meet the second temperature difference condition, control outdoor air to be discharged from the first air duct into the room, and control indoor air to be discharged from the third air duct to the outside.

[0097] The control module 202 is configured to control the bypass air valve to open for the fourth duration, discharge indoor air from the third air duct to the outside; the fourth duration is the duration determined according to the first temperature and the second temperature that meet the second temperature difference condition.

[0098] A control device for a fresh air fan provided by an embodiment of the present application, through the acquisition module 201, acquires the first information; the first information includes the first temperature and the second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct; through the control module 202, according to the first temperature and the second temperature, control outdoor air to be discharged from the first air duct into the room, and control indoor air to be discharged from the target air duct to the outside, the target air duct includes the second air duct and / or the third air duct. It solves the problem that in the related art, users use random operations to control the operation of each component of the fresh air fan, and effective energy-saving control cannot be achieved. The present application is based on the fresh air temperature and the return air temperature, adopts an intelligent control means, automatically adjusts each component of the fresh air fan, and can selectively control indoor air to be discharged from the exhaust air duct to the outside, and / or discharged to the outside through the bypass air duct, so that the indoor air is automatically shunted when flowing through the exhaust air duct and / or the bypass air duct, thereby reducing the air flow resistance generated when all the exhaust air flows through the heat exchange device of the exhaust air duct, effectively reducing the energy consumption, and achieving energy saving.

[0099] An embodiment of the present application provides a control device 300 for a fresh air fan, referring to Figure 3 As shown, the control device 300 for a fresh air fan includes: a memory 301, a processor 302, and a communication bus 303; wherein,

[0100] The communication bus 303 is used to realize the communication connection between the memory 301 and the processor 302;

[0101] A memory 301 for storing executable instructions.

[0102] A processor 302 for executing the executable instructions stored in the memory 301 to implement the steps of the control method of the fresh air fan as described above.

[0103] The processor may be an integrated circuit chip with signal processing capabilities, such as a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Among them, the general-purpose processor may be a microprocessor or any conventional processor, etc.

[0104] The control device of the fresh air fan provided in the embodiments of the present application is based on the fresh air temperature and the return air temperature, adopts intelligent control means, automatically adjusts each component of the fresh air fan, and can also be discharged to the outside through the bypass air duct when controlling the indoor air to be discharged from the exhaust air duct to the outside, effectively reducing energy consumption, achieving energy saving, and avoiding the problem of insufficient energy-saving control due to relying on manual means to control the equipment.

[0105] It should be noted that the descriptions of the same steps and the same content in this embodiment and other embodiments can be referred to the descriptions in other embodiments, and will not be repeated here.

[0106] Next, taking the actual scenario of fresh air fan control as an example, referring to Figure 4 and Figure 5 As shown, the embodiments of the present application provide a fresh air fan 1, which includes a fresh air duct assembly 101, an exhaust air duct assembly 102, a heat exchange assembly 103, a bypass air duct assembly 104, and a sensor assembly 105; among them,

[0107] The fresh air duct assembly 101 includes a fresh air fan 106; a fresh air inlet 107 and a fresh air outlet 108 are provided on the fresh air fan 1, and the fresh air inlet 107 and the fresh air outlet 108 are connected to form a fresh air duct 109. Outdoor air flows through the fresh air duct 109 from the fresh air inlet 107 and is discharged into the room from the fresh air outlet 108 to introduce fresh outdoor air.

[0108] The exhaust air duct assembly 102 includes an exhaust air fan 110; an exhaust air inlet 111 and an exhaust air outlet 112 are provided on the fresh air fan 1, and the exhaust air inlet 111 and the exhaust air outlet 112 are connected to form an exhaust air duct 113. Indoor air flows through the exhaust air duct 113 from the exhaust air inlet 111 and is discharged to the outside from the exhaust air outlet 112 to discharge the indoor dirty air.

[0109] The heat exchange component 103 includes a heat exchange device 114; a heat exchange device 114 is provided at the intersection of the fresh air duct 109 and the exhaust air duct 113. The heat exchange device 114 is used for heating / cooling the fresh air flow, heating / cooling the exhaust air flow, and energy exchange between the fresh air flow and the exhaust air flow. When the heat exchange device 114 is working, outdoor air flows through the heat exchange device 114 of the fresh air duct 109 from the fresh air inlet 107 and is discharged into the room from the fresh air outlet 108. At the same time, indoor air flows through the heat exchange device 114 of the exhaust air duct 113 from the exhaust air inlet 111 and is discharged to the outside from the exhaust air outlet 112. The indoor air and the outdoor air exchange heat around the heat exchange device 114.

[0110] The bypass duct assembly 104 includes a bypass air valve 115; a bypass air inlet 116 and an exhaust air outlet 112 (reusing the same outlet as the exhaust air duct 113) are provided on the fresh air blower 1. The bypass air inlet 116 and the exhaust air outlet 112 are connected to form a bypass air duct 117. The bypass air duct 117 is located on one side of the heat exchange device 114 and has no direct contact with the heat exchange device 114. Indoor air flows through the bypass air duct 117 from the bypass air inlet 116 and is discharged to the outside from the exhaust air outlet 112, so as to directly transport part of the exhaust air flow to the outside without passing through the heat exchange device 114.

[0111] Exemplarily, the bypass air duct 117 can be provided on the other side of the heat exchange device 114 and has no direct contact with the heat exchange device 114. Outdoor air flows through the bypass air duct from the bypass air inlet and is discharged into the room from the fresh air outlet 108, so as to directly transport part of the fresh air flow to the room without passing through the heat exchange device 114.

[0112] The sensor assembly 105 includes a fresh air temperature sensor 118, a return air temperature sensor 119, and a supply air temperature sensor 120; the fresh air temperature sensor 118 is provided at the fresh air inlet 107 of the fresh air duct 109 to detect the fresh air temperature; the return air temperature sensor 119 is provided at the exhaust air inlet 111 of the exhaust air duct 113 to detect the return air temperature; the supply air temperature sensor 120 is provided at the fresh air outlet 108 of the fresh air duct 109 to detect the supply air temperature.

[0113] Exemplarily, the sensor assembly 105 can further include an exhaust air temperature sensor 121, which is provided at the exhaust air outlet 112 of the exhaust air duct 113 to detect the exhaust air temperature; the sensor assembly 105 can further include a PM2.5 sensor 122 and a CO 2 sensor 123 and other sensing components to detect the air quality.

[0114] Exemplarily, in the embodiments of the present application, the temperature sensor can adopt a temperature sensor in the form of a temperature bulb with relatively low cost or a temperature patch. The control circuit of the temperature sensor and other electrical components of the fresh air blower can share the same wire conduit and be connected to the electrical control box of the fresh air blower. Only by adding a temperature sensor, there is no need to modify the original overall machine layout and wiring, which simplifies the assembly operation and improves the assembly efficiency.

[0115] Next, taking the actual scenario of fresh air blower control as an example, with reference to Figure 5 and Figure 6 as shown, on the basis of setting "manual adjustment" when controlling the fresh air blower in the embodiments of the present application, an intelligent adjustment method for the fresh air blower is provided, which is applied to the fresh air blower and is specifically described as follows:

[0116] S601. Collect environmental signals.

[0117] After the fresh air blower is powered on and started, at a certain collection period, the collection unit periodically collects the environmental signals of each sensor detection point, including temperature data and air quality information. Among them, the collected temperature signals can include fresh air temperature, supply air temperature, and return air temperature, and the collected temperature signals are sent to the control unit. Other temperature signals can also be collected: exhaust air temperature; the collected air quality parameters can include the content of PM2.5 and CO 2 content, and the other collected temperature parameters and air quality parameters are sent to the control unit.

[0118] S602. Convert the collected environmental signals into display signals and display them.

[0119] After the control unit receives the temperature signals collected by the collection unit, it calculates the sensible heat exchange efficiency, and converts the collected environmental signals and the calculated sensible heat exchange efficiency into digital signals that can be displayed, and transmits them to the display unit for display. In this way, through the display process, the current environmental state and the current sensible heat exchange efficiency of the fresh air blower can be displayed in a visual, real-time, and intuitive manner, improving the human-computer interaction efficiency and enhancing the user's comfort.

[0120] Among them, the calculation of the sensible heat exchange efficiency can adopt the following formula:

[0121]

[0122] Among them, η wd is the sensible heat exchange efficiency, 100%;

[0123] T OA is the fresh air temperature, in °C;

[0124] T SA is the supply air temperature, in °C;

[0125] T RA is the return air temperature, with the unit of °C.

[0126] Exemplarily, the display unit can be displayed in the form of text through an electronic screen, or can be displayed in the form of voice broadcast through a voice device, and can be specifically set according to actual needs. This application does not make specific limitations on this.

[0127] S603. Determine whether the adjustment method selected by the user is "intelligent adjustment". If yes, go to step 604; otherwise, go to step 610.

[0128] When the user selects the "intelligent adjustment" method, the fresh air fan automatically controls the operation of each component of the fresh air fan according to the collected environmental signals.

[0129] S604. Determine whether the temperature difference between the collected fresh air temperature and the return air temperature is greater than 8°C. If yes, go to step 605; otherwise, go to step 609.

[0130] In the "intelligent adjustment" mode, after the control unit receives the fresh air temperature and the return air temperature collected by the collection unit, it calculates the fresh air and return air temperature difference. When the temperature difference is greater than 8°C, it indicates that the indoor-outdoor temperature difference is relatively large at this time, and it is necessary to turn on the heat exchange device to process the air.

[0131] S605. Set to run in the "heat exchange mode", and control the rotation speed of the fresh air fan to be equal to the rotation speed of the exhaust fan.

[0132] If the temperature difference between the fresh air inlet and the return air outlet is greater than 8°C, set it to the "heat exchange" mode, and control the fresh air fan and the exhaust fan to run at the set same rotation speed for 1 hour to make the fresh air fan run stably.

[0133] S606. Determine whether the sensible heat exchange efficiency is within 80% - 85%. If yes, go to step 607; otherwise, go to step 608.

[0134] S607. Maintain the operation in the "heat exchange mode", control the fresh air fan and the exhaust fan to run at the set same rotation speed, and go to step 612.

[0135] If the sensible heat exchange efficiency is within 80% - 85%, it indicates that the sensible heat exchange efficiency is within the optimal range. At this time, control the fresh air fan to maintain the original "heat exchange mode", and control the fresh air fan and the exhaust fan to run at the set same rotation speed. In this way, by using intelligent means, control the sensible heat exchange efficiency to be within 80% - 85%, that is, control the equipment to operate in the optimal state, so that the energy exchange and recovery degree of the heat exchange device remains at a relatively high level, achieving energy conservation.

[0136] S608. When the sensible heat exchange efficiency is higher than 85%, turn on the "slow / rapid air intake mode" and control the speed of the fresh air fan to be greater than that of the exhaust fan. When the sensible heat exchange efficiency is lower than 80%, turn on the "slow / rapid air exhaust mode", control the speed of the exhaust fan to be greater than that of the fresh air fan, and proceed to step 612.

[0137] When the sensible heat exchange efficiency is slightly higher than 85%, it indicates that the sensible heat exchange efficiency is slightly on the high side. At this time, control the speed of the fresh air fan to be slightly greater than that of the exhaust fan, so that the fresh air volume is slightly greater than the exhaust air volume, keeping the indoor environment slightly positive pressured to prevent outdoor air from entering the room through door gaps, etc., thereby slightly increasing the fresh air volume and slightly reducing the sensible heat exchange efficiency. When the sensible heat exchange efficiency is significantly higher than 85%, it indicates that the sensible heat exchange efficiency is significantly on the high side. At this time, control the speed of the fresh air fan to be significantly greater than that of the exhaust fan, so that the fresh air volume is significantly greater than the exhaust air volume, keeping the indoor environment strongly positive pressured to prevent outdoor air from entering the room through door gaps, etc., thereby significantly increasing the fresh air volume and significantly reducing the sensible heat exchange efficiency. In this way, when the sensible heat exchange efficiency is on the high side, by controlling the fresh air fan to operate in the rapid air intake or slow air intake mode, the indoor environment is positive pressured, and outdoor air cannot enter the room through gaps such as door gaps and window sills, thereby increasing the fresh air volume and further reducing the sensible heat exchange efficiency to make the sensible heat exchange efficiency approach the optimal range. At this time, the fresh air fan is in a better operating state.

[0138] When the sensible heat exchange efficiency is slightly lower than 85%, it indicates that the sensible heat exchange efficiency is slightly on the low side. At this time, control the speed of the fresh air fan to be slightly less than that of the exhaust fan, so that the fresh air volume is slightly less than the exhaust air volume, keeping the indoor environment slightly negative pressured, and outdoor air can enter the room through door gaps, etc., thereby slightly increasing the exhaust air volume and slightly increasing the sensible heat exchange efficiency. When the sensible heat exchange efficiency is significantly lower than 85%, it indicates that the sensible heat exchange efficiency is significantly on the low side. At this time, control the speed of the fresh air fan to be significantly less than that of the exhaust fan, so that the fresh air volume is significantly less than the exhaust air volume, keeping the indoor environment strongly negative pressured, and outdoor air can enter the room through door gaps, etc., thereby significantly increasing the exhaust air volume and significantly increasing the sensible heat exchange efficiency. In this way, when the sensible heat exchange efficiency is on the low side, by controlling the fresh air fan to operate in the rapid air exhaust or slow air exhaust mode, the indoor environment is negative pressured, and fresh outdoor air can enter the room through gaps such as door gaps and window sills, thereby increasing the exhaust air volume and further increasing the sensible heat exchange efficiency to make the sensible heat exchange efficiency approach the optimal range.

[0139] According to the real-time detection results of the sensible heat exchange efficiency, adopt a hierarchical regulation strategy. When the sensible heat exchange efficiency is higher than 85%, control the fresh air fan to be in the rapid air intake mode or slow air intake mode. When the sensible heat exchange efficiency is lower than 85%, control the fresh air fan to be in the rapid air exhaust mode or slow air exhaust mode, thereby fully establishing the corresponding relationship between the sensible heat exchange efficiency and the air volume regulation, enabling the equipment to have a faster response speed and shorter adjustment time when facing different sensible heat exchange efficiencies, and improving the efficiency of intelligent control.

[0140] S609. Set to run in "bypass mode" and control the opening of the bypass valve.

[0141] If the temperature difference between the fresh air inlet and the return air inlet is less than or equal to 8°C, it indicates that the indoor-outdoor temperature difference is small at this time, belonging to the transitional season. There is no need to turn on the heat exchange device to process the air. Set it to "bypass mode" and control the opening of the bypass air valve, so that part of the indoor air is directly discharged outdoors without passing through the heat exchange device. In this way, by diverting part of the indoor air through the bypass air duct, the air flow resistance generated when the exhaust air passes through the heat exchange device is reduced, which is beneficial to reducing the equipment energy consumption during the operation of the fresh air fan and further achieving energy conservation.

[0142] S610. The adjustment method selected by the user is the "manual adjustment" method, and the user manually sets the specific operation mode, including heat exchange, slow air intake, fast air intake, slow air exhaust, fast air exhaust, bypass and automatic modes.

[0143] S611. Control the fresh air fan to run according to the specific operation mode manually set by the user, and enter step 612.

[0144] If the user manually sets it to the heat exchange mode, control the fresh air fan and the exhaust fan to run at the wind speed gear set by the user; if the user manually sets it to the fast air intake mode, control the fresh air fan to run at a speed greater than that of the exhaust fan; if the user manually sets it to the slow air intake mode, control the fresh air fan to run at a speed slightly greater than that of the exhaust fan; if the user manually sets it to the fast air exhaust mode, control the exhaust fan to run at a speed greater than that of the fresh air fan; if the user manually sets it to the slow air exhaust mode, control the fresh air fan to run at a speed slightly greater than that of the exhaust fan; if the user manually sets it to the bypass mode, open the bypass air valve to open the bypass air duct, so that part of the exhaust air volume can be directly discharged outdoors without passing through the heat exchange device.

[0145] S612. Control the fresh air fan to run for a period of time and return to step S601.

[0146] After the fresh air fan runs for a period of time, return to step S601, re-collect the environmental signals, and automatically set the operation mode according to the re-collected environmental signals, realizing the feedback adjustment of the control result. Then, continue to control each component of the fresh air fan according to the feedback result, further realizing the intelligent control of each component of the fresh air fan, being able to achieve the optimal energy-saving operation state without affecting the overall operation state of the machine, reducing the equipment operation energy consumption, with simple control and realizing the intelligentization of energy-saving control.

[0147] Next, taking the actual scenario of fresh air fan control as an example, referring to Figure 7 As shown, the embodiment of the present application provides another control device 700 for a fresh air fan ( Figure 7The control device 700 of the fresh air unit in Figure 2 corresponds to the control device 200 of the fresh air unit in

[0148] The acquisition unit 701 is used to acquire environmental parameters, including the temperature of the fresh air inlet, the temperature of the air supply outlet, the temperature of the air return outlet, the temperature of the exhaust air outlet, the PM2.5 content, and the CO 2 content, and send the temperature parameters and air quality parameters in the acquired environmental parameters to the control unit 702.

[0149] The acquisition unit 701 is also used to re-acquire environmental parameters after the operation unit 704 adjusts the operation parameters of each component of the fresh air unit according to the control signal sent by the control unit 702, so as to realize the automatic control of the fresh air unit.

[0150] The control unit 702 is used to receive the environmental parameters of each acquisition point transmitted by the acquisition unit 701, process and calculate the sensible heat exchange efficiency value according to the environmental parameters and convert it into a display signal, convert the temperature parameters and air quality parameters in the environmental parameters into a display signal, and send the converted display signal to the display unit 703 to control the display unit 703 to display according to the display signal.

[0151] The control unit 702 is also used to determine the rotation speed of the fresh air fan, the rotation speed of the exhaust fan, and the opening / closing state of the bypass air valve according to the information of the operation mode fed back by the display unit 703, the calculated sensible heat exchange efficiency value, and the fresh / return air temperature difference value, and send a control signal to the operation unit 704 to control the operation unit 704 to operate according to the set state. In this way, with the optimal sensible heat exchange efficiency as the control target, the operation mode of the fresh air unit is automatically adjusted without manual adjustment by the user, simplifying the user operation and improving the use comfort. At the same time, the energy exchange and recovery capabilities of the heat exchange device can be intelligently utilized to achieve energy conservation.

[0152] The display unit 703 is used to receive the display signal sent by the control unit 702 and display the display signal, including the temperature parameters of each acquisition point, the sensible heat exchange efficiency value, and the air quality parameters. Thus, the real-time air quality, the temperature parameters of each acquisition point, and the sensible heat exchange efficiency are intuitively displayed to the user.

[0153] The display unit 703 is also used to obtain the information of the operation mode in which the user sets the "intelligent adjustment" method and send the obtained operation mode information to the control unit. Thus, according to the display signal received from the control unit 702 and the operation mode information received from the user side,

[0154] An operating unit 704, configured to receive control signals sent by a control unit 702, and adjust operating parameters of each component of a fresh air fan, including adjusting operating parameters of a motor corresponding to the fresh air fan, a motor corresponding to an exhaust fan, and a motor corresponding to a bypass air valve, where the operating parameters include fan rotation speeds and opening / closing of air valves, so as to adjust the ambient temperature.

[0155] An embodiment of the present application provides a computer-readable storage medium, which stores one or more programs, and the one or more programs can be executed by one or more processors to implement the implementation process in the control method of the fresh air fan provided in the corresponding embodiment as Figure 1 , Figure 6 , which will not be elaborated here.

[0156] The above computer storage medium / memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a ferromagnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM), etc.; or it may be various terminals including one or any combination of the above memories, such as a mobile phone, a computer, a tablet device, a personal digital assistant, etc.

[0157] It should be understood that the "one embodiment" or "an embodiment" or "the embodiments of the present application" or "the foregoing embodiments" or "some embodiments" or "some implementation manners" mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, the "in one embodiment" or "in an embodiment" or "the embodiments of the present application" or "the foregoing embodiments" or "some embodiments" or "some implementation manners" that appear throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the sequence of execution, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application. The serial numbers of the embodiments of the present application above are only for description and do not represent the advantages or disadvantages of the embodiments.

[0158] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the couplings between the components shown or discussed, or direct couplings, or communication connections can be through some interfaces, and the indirect couplings or communication connections of devices or units can be electrical, mechanical or other forms.

[0159] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units; they can be located in one place or distributed to multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0160] In addition, each functional unit in the embodiments of the present application can be all integrated in a processing unit, or each unit can be separately used as a unit, or two or more units can be integrated in one unit; the above integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

[0161] The methods disclosed in several method embodiments provided by the present application can be combined arbitrarily without conflict to obtain new method embodiments.

[0162] The features disclosed in several product embodiments provided by the present application can be combined arbitrarily without conflict to obtain new product embodiments.

[0163] The features disclosed in several method or device embodiments provided by this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0164] Those of ordinary skill in the art can understand that all or part of the steps to implement the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: various media such as removable storage devices, read-only memory (ROM), magnetic disks, or optical discs that can store program codes.

[0165] Alternatively, if the above integrated units of this application are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the embodiments of this application essentially or the part that contributes to the related technology can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of this application. And the foregoing storage medium includes: various media such as removable storage devices, ROM, magnetic disks, or optical discs that can store program codes.

[0166] It should be noted that the drawings in the embodiments of this application are only for illustrating the schematic positions of various components on the terminal device and do not represent their actual positions in the terminal device. The actual positions of each component or each area can be changed or offset according to the actual situation (for example, the structure of the terminal device). Moreover, the ratios of different parts in the terminal device in the figure do not represent the actual ratios.

[0167] The above is only the implementation manner of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by this application, and all of them should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claimed rights.

Claims

1. A control method for a fresh air blower, characterized in that: The method comprises: Acquire first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct; According to the first temperature and the second temperature, outdoor air is controlled to be discharged into the room from the first air duct, and indoor air is controlled to be discharged to the outside from the target air duct, and the target air duct includes the second air duct and / or the third air duct; the energy consumption required to discharge the indoor air from the second air duct and / or the third air duct to the outside is different.

2. The control method according to claim 1, characterized in that: The step of controlling outdoor air to be discharged from the first air duct into the room according to the first temperature and the second temperature, and controlling indoor air to be discharged from the target air duct to the outside, comprises: If the first temperature and the second temperature satisfy a first temperature difference condition, outdoor air is controlled to be discharged into the room from the first air duct, and indoor air is controlled to be discharged to the outside from the second air duct.

3. The control method according to claim 2, characterized in that: The first information further includes a third temperature, and the third temperature indicates a supply air temperature at an air outlet of the first air duct; and according to the first temperature and the second temperature, controlling outdoor air to be discharged from the first air duct into the room, and controlling indoor air to be discharged from the target air duct to the outside, comprises: determining a sensible heat exchange efficiency according to the first temperature, the second temperature and the third temperature; According to the sensible heat exchange efficiency, outdoor air is controlled to be discharged into the room from the first air duct, and indoor air is controlled to be discharged to the outside from the second air duct.

4. The control method according to claim 3, characterized in that: According to the sensible heat exchange efficiency, controlling outdoor air to be discharged into the room from the first air duct, and controlling indoor air to be discharged to the outside from the second air duct, comprises: If the sensible heat exchange efficiency satisfies the first numerical range, the fresh air fan is controlled to be turned on at a first speed for a first period of time to discharge outdoor air from the first air duct into the room, and the exhaust fan is controlled to be turned on at a second speed for a first period of time to discharge indoor air from the second air duct to the outside; the second speed is less than the first speed.

5. The control method according to claim 3, characterized in that: According to the sensible heat exchange efficiency, controlling outdoor air to be discharged into the room from the first air duct, and controlling indoor air to be discharged to the outside from the second air duct, comprises: If the sensible heat exchange efficiency meets the second numerical range, the fresh air fan is controlled to be turned on at the third speed for the second time period to discharge the outdoor air from the first air duct into the room, and the exhaust fan is controlled to be turned on at the fourth speed for the second time period to discharge the indoor air from the second air duct to the outside; the fourth speed is greater than the third speed.

6. The control method according to claim 3, characterized in that: According to the sensible heat exchange efficiency, controlling outdoor air to be discharged into the room from the first air duct, and controlling indoor air to be discharged to the outside from the second air duct, comprises: If the sensible heat exchange efficiency meets the third numerical range, the fresh air fan is controlled to be turned on at the fifth speed for the third time period to discharge the outdoor air from the first air duct into the room, and the exhaust fan is controlled to be turned on at the fifth speed for the third time period to discharge the indoor air from the second air duct to the outside; the fifth speed is a speed determined based on the sensible heat exchange efficiency that meets the third numerical range.

7. The control method according to claim 2, characterized in that: The step of controlling outdoor air to be discharged from the first air duct into the room according to the first temperature and the second temperature, and controlling indoor air to be discharged from the target air duct to the outside, comprises: If the first temperature and the second temperature satisfy a second temperature difference condition, outdoor air is controlled to be discharged into the room from the first air duct, and indoor air is controlled to be discharged to the outside from the third air duct.

8. The control method according to claim 7, characterized in that: The control of exhausting indoor air from the third air duct to the outside includes: The bypass air valve is controlled to open for a fourth time period to discharge indoor air from the third air duct to the outdoors; the fourth time period is a time period determined based on the first temperature and the second temperature that satisfy the second temperature difference condition.

9. A control device for a fresh air blower, characterized in that: The device comprises: An acquisition module, used to acquire first information; the first information includes a first temperature and a second temperature; the first temperature indicates the fresh air temperature at the air inlet of the first air duct; the second temperature indicates the return air temperature at the air inlet of the second air duct; A control module is used to control outdoor air to be discharged into the room from the first air duct according to the first temperature and the second temperature, and to control indoor air to be discharged to the outside from the target air duct, wherein the target air duct includes the second air duct and / or the third air duct; the energy consumption required to discharge indoor air from the second air duct and / or the third air duct to the outside is different.

10. A control device for a fresh air blower, characterized in that: The device comprises: A memory for storing executable instructions; A processor is used to execute the executable instructions stored in the memory to implement the control method of the fresh air fan as described in any one of claims 1 to 8.

11. A computer-readable storage medium, characterized in that: Executable instructions are stored, and when the executable instructions are executed, they are used to cause the processor to execute the control method for the fresh air fan according to any one of claims 1 to 8.

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