Fresh air device, control method thereof and storage medium

Abstract

The application discloses a fresh air device and a control method and storage medium thereof. The fresh air device comprises an adsorption runner, a heat source and a bypass air duct. The control method comprises the following steps: obtaining a target humidification amount of indoor air, a full amount of air of a bypass air valve and a heating power range of the heat source; determining a proportion of regenerated air according to the target humidification amount and the heating power range; and adjusting the opening degree of the bypass air valve according to the proportion of the regenerated air and the full amount of air. According to the control method of the fresh air device, the proportion of the regenerated air is determined according to the humidification demand and the heating power range, and the opening degree of the bypass air valve is adjusted correspondingly, so that the indoor air is humidified more accurately and energy-savingly, and the experience of users is improved.

Description

Technical Field

[0001] This invention relates to the field of air conditioning technology, and in particular to a fresh air device, its control method, and a storage medium. Background Technology

[0002] When using a rotary dehumidifier for waterless humidification in winter, with a fixed dehumidifying airflow, rotor speed, and rotor zone ratio, the waterless humidification capacity of the rotor is mainly related to the regeneration temperature and regeneration airflow, with the regeneration temperature being the primary influencing factor. For silica gel or molecular sieve rotors, the regeneration temperature can typically reach 80–120℃ or even higher. Since the humidification capacity is primarily affected by the regeneration temperature, this method consumes a significant amount of energy. Furthermore, the heat expended is also consumed within the adsorption rotor and not fully converted into humidification. Instead, it leads to an overall temperature rise in the rotor, affecting adsorption performance, resulting in high energy consumption and poor performance. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one object of this invention is to provide a control method for a fresh air device, which determines the appropriate ratio of regenerated air based on humidification requirements and heating power range, and accordingly adjusts the opening of the bypass ventilation valve to more accurately and energy-efficiently humidify indoor air, thereby improving the user experience.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to propose a first type of fresh air device.

[0006] The fourth objective of this invention is to provide a second type of fresh air device.

[0007] To achieve the above objectives, a first aspect of the present invention provides a control method for a fresh air device. The fresh air device includes an adsorption impeller, a heat source, and a bypass duct. The heat source is disposed between an outdoor fresh air inlet and the adsorption impeller to heat the outdoor fresh air to generate regenerated air. The bypass duct is disposed between the outdoor fresh air inlet and an indoor return air inlet, and a bypass valve is provided on the bypass duct. The bypass valve is used to adjust the airflow of the regenerated air and the airflow through the bypass duct. The adsorption impeller is used to collect moisture from the indoor return air and release it into the room with the regenerated air to humidify the indoor air. The control method includes: obtaining the target humidification amount of the indoor air, the full airflow of the bypass valve, and the heating power range of the heat source; determining the proportion of the regenerated air based on the target humidification amount and the heating power range; and adjusting the opening of the bypass valve based on the proportion of the regenerated air and the full airflow.

[0008] The fresh air device of this invention includes an adsorption rotor, a heat source, and a bypass duct. The heat source, located between the outdoor fresh air inlet and the adsorption rotor, heats the passing outdoor fresh air and generates regenerated air. A bypass duct is also provided between the outdoor fresh air inlet and the indoor return air inlet, and a bypass valve is also provided on the bypass duct. In this embodiment, the proportion of regenerated air is determined based on the target humidification amount of indoor air and the heating power range of the heat source. Then, the bypass valve is adjusted according to the proportion. Thus, the control method of the fresh air device in this invention can more accurately and energy-efficiently humidify indoor air and improve the user experience.

[0009] In some embodiments of the present invention, obtaining the heating power range of the heat source includes: obtaining the temperature range of the regenerated air; and determining the heating power range of the heat source based on the temperature range of the regenerated air.

[0010] In some embodiments of the present invention, determining the proportion of regenerated air based on the target humidification amount and the heating power range includes: determining multiple airflow values ​​of the regenerated air based on the target humidification amount, and determining multiple heating powers corresponding to the multiple airflow values ​​of the regenerated air; determining at least one preset heating power among the multiple heating powers that satisfies the heating power range; comparing and selecting the minimum preset heating power among the at least one preset heating power, and determining the proportion of regenerated air based on the airflow value of the regenerated air corresponding to the minimum preset heating power.

[0011] In some embodiments of the present invention, the sum of the air volume of the regenerated air and the air volume through the bypass ventilation duct is the full air volume of the bypass ventilation valve.

[0012] In some embodiments of the present invention, the fresh air device further includes a supply air fan and an exhaust air fan. The supply air fan is installed at the indoor air supply outlet for supplying outdoor fresh air into the room, and the exhaust air fan is installed at the outdoor exhaust outlet for exhausting indoor return air to the outside. The indoor air supply volume is equal to the outdoor exhaust volume.

[0013] In some embodiments of the present invention, the proportion of regenerated air is in the range of [0.1, 0.4].

[0014] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium storing a control program for a fresh air device, which, when executed by a processor, implements the control method for the fresh air device described in the above embodiments.

[0015] The computer-readable storage medium of this embodiment executes the control program of the fresh air device stored thereon through a processor, which can more accurately and energy-efficiently regulate the humidity of indoor air and improve the user experience.

[0016] To achieve the above objectives, a third aspect of the present invention provides a fresh air device, including a memory, a processor, and a control program for the fresh air device stored in the memory and executable on the processor. When the processor executes the control program for the fresh air device, it implements the control method for the fresh air device described in the above embodiments.

[0017] The fresh air device of this invention includes a memory, a processor, and a control program for the fresh air device stored in the memory and capable of running on the processor. When the processor executes the control program for the fresh air device, it can more accurately and energy-efficiently adjust the humidity of indoor air, thereby improving the user experience.

[0018] To achieve the above objectives, a fourth aspect of this invention provides a fresh air device, comprising an adsorption impeller, a heat source, a bypass duct, and a control component. The heat source is disposed between an outdoor fresh air inlet and the adsorption impeller to heat the outdoor fresh air to generate regenerated air. The bypass duct is disposed between the outdoor fresh air inlet and an indoor return air inlet, and a bypass valve is provided on the bypass duct. The bypass valve is used to regulate the airflow of the regenerated air and the airflow through the bypass duct. The adsorption impeller is used to recover moisture from the indoor return air and release it into the room with the regenerated air to humidify the indoor air. The control component is used to: acquire the target humidification amount of the indoor air, the full airflow of the bypass valve, and the heating power range of the heat source; determine the proportion of the regenerated air based on the target humidification amount and the heating power range; and adjust the opening of the bypass valve based on the proportion of the regenerated air and the full airflow.

[0019] The compressor control device of this invention includes an adsorption rotor, a heat source, a bypass ventilation duct, and a control component. The heat source, positioned between the outdoor fresh air inlet and the adsorption rotor, heats the passing outdoor fresh air to generate regenerated air. A bypass ventilation duct, equipped with a bypass valve, is also provided between the outdoor fresh air inlet and the indoor return air inlet. The control component determines the proportion of regenerated air based on the target humidification amount of the indoor air and the heating power range of the heat source, and then adjusts the bypass ventilation valve according to this proportion. Therefore, the fresh air device of this invention can more accurately and energy-efficiently humidify indoor air, improving the user experience.

[0020] In some embodiments of the present invention, the control component is further configured to: determine multiple airflow values ​​of the regenerated air based on the target humidification amount, and determine multiple heating powers corresponding to the multiple airflow values ​​of the regenerated air; determine at least one preset heating power among the multiple heating powers that satisfies the heating power range; compare and select the minimum preset heating power among the at least one preset heating power, and determine the proportion of the regenerated air based on the airflow value of the regenerated air corresponding to the minimum preset heating power. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a fresh air device in related technologies;

[0022] Figure 2 This is a schematic diagram of the structure of a fresh air device according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a bypass ventilation valve according to an embodiment of the present invention;

[0024] Figure 4 This is a flowchart of a control method for a fresh air device in one embodiment of the present invention;

[0025] Figure 5 This is a flowchart of a control method for a fresh air device in a specific embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of an experimental simulation of the heat source power and humidification amount corresponding to different regenerated air volumes in one embodiment of the present invention;

[0027] Figure 7 This is a flowchart of the control method of the fresh air device in another specific embodiment of the present invention;

[0028] Figure 8 This is a schematic diagram of the structure of a fresh air device according to another embodiment of the present invention;

[0029] Figure 9 This is a structural block diagram of a first type of fresh air device according to an embodiment of the present invention;

[0030] Figure 10 This is a structural block diagram of a second type of fresh air device according to an embodiment of the present invention. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following description, with reference to the accompanying drawings and specific embodiments, describes the fresh air device, its control method, and storage medium according to embodiments of the present invention.

[0033] like Figure 1 As shown, in related technologies, a fresh air device can include an adsorption rotor 1, a heat source 2, a supply-side fan 3, and an exhaust-side fan 4. By employing a fresh air device with a built-in control module and equipped with a speed-regulating motor, the control module is electrically connected to the drive motors of the adsorption rotor, the supply-side fan, and the exhaust-side fan. By controlling the rotational speeds of these motors, the rotational speed of the adsorption rotor 1 and the airflow of the supply-side fan 3 and exhaust-side fan 4 can be changed. This allows switching between multiple modes such as humidification, total heat recovery, and direct fresh air intake by adjusting the rotational speed of the adsorption rotor 1. During waterless humidification in winter using the rotor, when the dehumidified airflow, rotor speed, and rotor zoning ratio are constant, the waterless humidification capacity of the rotor is mainly related to the regeneration temperature and regeneration airflow, with the regeneration temperature being the primary influencing factor. The regeneration air is heated outdoor fresh air. For silica gel or molecular sieve adsorption rotors, the regeneration temperature typically needs to reach 80–120°C or even higher. To maintain a slight positive pressure indoors, the airflow rates of fresh air and exhaust air must be kept consistent. This requires heating the outdoor fresh air to a certain regeneration temperature before it reaches the adsorption rotor. Furthermore, since humidification is primarily affected by the regeneration temperature, this method consumes a significant amount of energy, and the heat expended is not fully converted into humidification. Instead, it causes an overall temperature rise in the rotor, affecting adsorption performance, resulting in high energy consumption and poor rotor performance. The fresh air device of this invention can determine the appropriate ratio of regenerated air based on humidification requirements and heating power range, and accordingly adjust the opening of the bypass ventilation valve to more accurately and energy-efficiently humidify indoor air, improving the user experience.

[0034] It should be noted that, as Figure 2As shown, the fresh air device in this embodiment of the invention includes an adsorption rotor 1, a heat source 2, a supply air fan 3, an exhaust air fan 4, and a bypass ventilation valve 5. The supply air fan 3 is located at the indoor air supply outlet and is used to supply outdoor fresh air into the room. The exhaust air fan 4 is located at the outdoor exhaust outlet and is used to exhaust indoor return air to the outside. The adsorption rotor 1 is used to recover moisture from the indoor return air and release it into the room along with the outdoor fresh air to regulate indoor humidity. The heat source 2 is located at the outdoor fresh air outlet and is used to heat the outdoor fresh air. The bypass ventilation valve 5 is located between the outdoor fresh air outlet and the indoor air supply outlet and is used to divert the outdoor fresh air so that part of the outdoor fresh air is heated by the heat source 2 before being directed into the room, while the other part of the outdoor fresh air is directed into the room without being heated by the heat source 2. In the figure, OA (Outside Air) represents outdoor fresh air, RA (Return Air) represents indoor return air, SA (Supply Air) represents indoor supply air, and EA (Exhaust Air) represents outdoor exhaust air. Heat source 2, a part of adsorption rotor 1 and supply side fan 3 constitute an air supply channel for supplying air into the room. Outdoor fresh air enters the room after passing through heat source 2 and adsorption rotor 1 in sequence under the action of supply side fan 3. The other part of adsorption rotor 1 and exhaust side fan 4 constitute an exhaust channel for exhausting air into the outside. Indoor return air is discharged to the outside through adsorption rotor 1 under the action of exhaust side fan 4.

[0035] Furthermore, the bypass ventilation method proposed in this invention for setting up a fresh air device can first use the air duct that has been heated by a heat source and then returns to the room as a conventional air duct, such as... Figure 3 As shown, the bypass duct area is S1, the conventional duct area is S2, and the total duct area is S. Given a fixed product structure size, S = S1 + S2. If the airflow through ducts S1 and S2 are Q1 and Q2 respectively, then Q = Q1 + Q2, where Q is the total airflow. It should be noted that during waterless humidification, the adsorption rotor primarily relies on increasing the rotor's body temperature to release the adsorbed moisture. A small amount of regenerated air then carries the released moisture away and into the room, thus humidifying the indoor air. Under the same moisture absorption conditions, a higher regeneration temperature results in a higher water vapor partial pressure on the rotor's surface, ensuring a sufficiently large water vapor mass transfer driving force between the rotor's surface and the regenerated air. This, in turn, ensures a certain amount of water vapor is released from the rotor to humidify the indoor air.

[0036] Figure 4 This is a flowchart illustrating a control method for a fresh air device according to an embodiment of the present invention.

[0037] like Figure 4 As shown, the control method of the fresh air device in this embodiment includes the following steps:

[0038] S10 obtains the target humidification amount of indoor air, the full air volume of the bypass vent, and the heating power range of the heat source.

[0039] The control method for the fresh air device in this embodiment of the invention can be applied to the control system of the fresh air device. The control system can determine the proportion of regenerated air based on the target humidification amount and heating power range, and adjust the opening of the bypass ventilation valve according to the proportion of regenerated air and the full air volume, thereby determining the ratio of bypass ventilation duct and conventional air duct and designing the corresponding duct area. This solves the problem of excessive heating power and energy waste during waterless humidification of the rotary humidifier in winter, while ensuring indoor humidification effect and a slightly positive pressure air state.

[0040] Specifically, in this embodiment, the target humidification amount of indoor air can be selected and determined by the user through a smart terminal device, or it can be preset in the fresh air device. Specifically, different target humidity can be set according to different temperatures, and then the corresponding target humidification amount can be determined. When setting different target humidity according to different temperatures, it can be determined according to the user's comfort with temperature and humidity in the environment, because when the temperature is fixed, different humidity will affect the user's comfort.

[0041] In this embodiment, the full air volume of the bypass ventilation valve represents the sum of the air volume through the bypass ventilation duct and the air volume of the regenerated air, which is the air volume supplied through the indoor ventilation system. In some embodiments, to ensure that the indoor air volume is in a slightly positive pressure state, the indoor air volume is further limited to be consistent with the outdoor exhaust air volume.

[0042] In this embodiment, the heating power range of the heat source can be determined based on the high temperature resistance of the fresh air device. If the heating temperature is too high during the process of the heat source heating the outdoor fresh air, the fresh air device may not be able to work properly. Therefore, in some examples, the heating power range of the heat source can be limited, and energy consumption can be further saved based on the heating power range of the heat source.

[0043] In some embodiments of the present invention, the heating power range of the heat source is obtained, such as... Figure 5 As shown, it includes the following steps:

[0044] S601, obtain the temperature range of the regenerated air.

[0045] S602, determine the heating power range of the heat source based on the temperature range of the regenerated air.

[0046] Specifically, the heating power range of the heat source can be determined based on the temperature of the regenerated air. The heating power of the heat source can heat the outdoor fresh air to the regeneration temperature required for the regeneration air. The heating power of the heat source = volumetric air volume * density * specific heat * (regeneration temperature required for regeneration air - outdoor fresh air temperature). The regeneration temperature range is generally between 50℃ and 100℃. In winter, turning on the heat source for humidification can significantly improve latent heat recovery efficiency, thereby alleviating indoor dryness.

[0047] It should be noted that the temperature range of the regenerated air can be determined based on factors such as the fresh air duct and the plastic material of the adsorption rotor. Understandably, the higher the temperature of the regenerated air, the higher the partial pressure of water vapor on the surface of the adsorption rotor. This ensures a sufficiently large mass transfer driving force between the adsorption rotor and the regenerated air, thereby guaranteeing the release of a certain amount of water vapor from the adsorption rotor to humidify the indoor air. However, because the temperature tolerance of commonly used plastics in air conditioning equipment is limited, there is an upper limit to the regeneration temperature. A reasonable temperature range can be set based on factors such as the fresh air duct and the plastic material of the rotor. After determining the temperature range of the regenerated air, the heating power range of the heat source can be further determined based on this temperature range, i.e., using this heating power range to ensure that the temperature of the regenerated air reaches the corresponding range.

[0048] S20 determines the proportion of regenerated air based on the target humidification capacity and heating power range.

[0049] Specifically, such as Figure 6 As shown, both theoretical simulations and experimental tests demonstrate that, for a given dehumidified airflow and air volume, reducing the regeneration airflow and increasing the regeneration temperature can achieve the same humidification output. For a specific operating condition, the humidification target is constant. Theoretically, for a given regeneration airflow, increasing the regeneration temperature can meet the target humidification output; however, due to the limited temperature tolerance of commonly used plastics in air conditioning equipment, there is an upper limit to the regeneration temperature. Under this constraint, there exists an optimal regeneration airflow Qmin, which minimizes the heating power of the heat source while meeting the humidification output requirement. For more details, see [link to relevant documentation]. Figure 6 Among them, regenerated air volumes B, C, and D can all meet the target humidification capacity. However, to minimize the heating power of the heat source, regenerated air volume B can be selected as the optimal regenerated air volume Qmin to save energy. After determining the regenerated air volume, the proportion of regenerated air can be further determined, specifically the proportion of regenerated air volume in the total air volume of the bypass vent.

[0050] Specifically, in combination Figure 3As shown, the bypass duct area S1, the conventional duct area S2, and the total duct area S are given. Given a fixed product structure size, S = S1 + S2. If the airflow through ducts S1 and S2 are Q1 and Q2 respectively, then Q = Q1 + Q2, where Q is the total airflow of the bypass duct. Under the constraint of the upper limit temperature for regeneration, there exists an optimal regeneration airflow Qmin to minimize the heating power of the heat source while meeting the target humidification requirement. At this point, Q1 = Qmin. min =ηQ, Q2 = (1-η)Q, where η is the proportion of regenerated air, and the value of this proportion can be in the range of [0.1, 0.4].

[0051] In some embodiments of the present invention, the proportion of regenerated air is determined based on the target humidification amount and the heating power range, such as... Figure 7 As shown, it includes the following steps:

[0052] S801 determines multiple air volume values ​​for regenerated air based on the target humidification amount, and determines multiple heating powers corresponding to the multiple air volume values ​​for regenerated air.

[0053] S802, determine at least one preset heating power that meets the heating power range among multiple heating powers.

[0054] S803, compare and select the minimum preset heating power among at least one preset heating power, and determine the proportion of regenerated air based on the air volume value of regenerated air corresponding to the minimum preset heating power.

[0055] For example, combined Figure 6 As shown, the regenerated air volume B, regenerated air volume C, and regenerated air volume D meet the target humidification capacity. The intersection points between the line graphs corresponding to regenerated air volume B, regenerated air volume C, and regenerated air volume D and the target humidification capacity are determined. Then, based on each intersection point, three preset heating powers are determined. Among the regenerated air volumes that meet the heating power range, the minimum preset heating power is selected. It can be seen from the figure that the heating power corresponding to regenerated air volume B is the smallest. At this time, the regenerated air volume corresponding to regenerated air volume B is the optimal regenerated air volume Qmin. The proportion of regenerated air can be determined based on Qmin.

[0056] S30 adjusts the opening of the bypass valve according to the proportion of regenerated air and the total air volume.

[0057] Specifically, after determining the proportion of regenerated air and the total air volume (since the total air volume is fixed), the air volume of the bypass duct can be determined after determining the proportion of regenerated air, which in turn determines the opening degree of the bypass valve. A specific control command can then be determined, and the opening degree of the bypass valve can be controlled according to this command. After determining the opening degree of the bypass valve, the power control of the heat source and the rotation speed control of the adsorption rotor can be combined to ensure that a small portion of the fresh air is regenerated and desorbed through the heat source and rotor, while the remaining air is mixed with the regenerated air through the bypass duct and sent into the room. This significantly reduces the heating power of the heat source and prevents excess heat from being wasted on heating the rotor and reducing adsorption performance.

[0058] In some embodiments of the present invention, the sum of the regenerated air volume and the air volume through the bypass duct is the full air volume of the bypass duct.

[0059] Specifically, in combination Figure 3 As shown, under the condition that the product structure dimensions are fixed, the area of ​​the bypass duct S1, the area of ​​the conventional duct S2, and the total duct area S satisfy S = S1 + S2. If the air volume through the bypass duct and the conventional duct are Q1 and Q2 respectively, the sum of the air volume through the bypass duct Q1 and the air volume of the regenerated air Q2 is the full air volume Q of the bypass duct valve, Q = Q1 + Q2.

[0060] In some embodiments of the present invention, the fresh air device further includes a supply air fan and an exhaust air fan. The supply air fan is installed at the indoor air supply outlet to supply outdoor fresh air into the room, and the exhaust air fan is installed at the outdoor exhaust outlet to exhaust indoor return air to the outside. The indoor air supply volume is equal to the outdoor exhaust volume.

[0061] Specifically, in combination Figure 8 As shown, the fresh air device of the present invention also includes a supply air fan 3 and an exhaust air fan 4. The supply air fan 3 is installed at the indoor air supply outlet to deliver outdoor fresh air into the room, and the exhaust air fan 4 is installed at the outdoor exhaust outlet to exhaust indoor return air to the outside. To ensure a slight positive pressure indoors, the air volume of outdoor fresh air and outdoor exhaust air usually needs to be consistent. That is, the sum of the outdoor fresh air volume passing through the heat source 2 and the outdoor fresh air volume passing directly through the bypass duct without passing through the heat source 2 is equal to the outdoor exhaust air volume.

[0062] In summary, the control method of the fresh air device in this embodiment of the invention determines the corresponding ratio of regenerated air according to the humidification requirements and heating power range, and adjusts the opening of the bypass ventilation valve accordingly, so as to humidify the indoor air more accurately and energy-efficiently, thereby improving the user experience.

[0063] To implement the methods of the above embodiments, this invention provides a computer-readable storage medium storing a control program for a fresh air device. When the control program for the fresh air device is executed by a processor, it implements the various steps of the control method for the fresh air device of the above embodiments of this invention.

[0064] The computer-readable storage medium of this invention executes the control program of the fresh air device stored thereon through a processor, which can more accurately and energy-efficiently regulate the humidity of indoor air and improve the user experience.

[0065] Figure 9 This is a structural block diagram of a first type of fresh air device according to an embodiment of the present invention.

[0066] Furthermore, such as Figure 9 As shown, the present invention also proposes a first fresh air device 200, which includes a memory 201, a processor 202, and a control program for the fresh air device stored in the memory 201 and run on the processor 202. When the processor 202 executes the program, it implements the control method of the fresh air device described in the above embodiment.

[0067] The first type of fresh air device in this invention executes the control program of the fresh air device stored in the memory through a processor, which can more accurately and energy-efficiently adjust the humidity of indoor air and improve the user experience.

[0068] Figure 10 This is a structural block diagram of a second type of fresh air device according to an embodiment of the present invention.

[0069] Furthermore, such as Figure 10 As shown, the present invention proposes a second fresh air device 30, which includes a rotor 1, a heat source 2, a bypass ventilation duct and a control component 301.

[0070] The second type of fresh air device 30 in this embodiment includes an adsorption rotor 1, a heat source 2, a bypass duct, and a control component 301. The heat source 2 is located between the outdoor fresh air inlet and the adsorption rotor 1 to heat the outdoor fresh air to generate regenerated air. The bypass duct is located between the outdoor fresh air inlet and the indoor return air inlet, and is equipped with a bypass valve. The bypass valve regulates the airflow of the regenerated air and the airflow through the bypass duct. The adsorption rotor recovers moisture from the indoor return air and releases it into the room with the regenerated air to humidify the indoor air. The control component is used to: acquire the target humidification amount of the indoor air, the full airflow of the bypass valve, and the heating power range of the heat source; determine the proportion of regenerated air based on the target humidification amount and the heating power range; and adjust the opening of the bypass valve based on the proportion of regenerated air and the full airflow.

[0071] In some embodiments of the present invention, the control component is used to determine multiple air volume values ​​of regenerated air based on the target humidification amount, and to determine multiple heating powers corresponding to the multiple air volume values ​​of regenerated air; to determine at least one preset heating power that meets the heating power range among the multiple heating powers; to compare and select the minimum preset heating power among the at least one preset heating power, and to determine the proportion of regenerated air based on the air volume value of the regenerated air corresponding to the minimum preset heating power.

[0072] In one embodiment of the present invention, the control component 301 is further configured to acquire the temperature range of the regenerated air and determine the heating power range of the heat source based on the temperature range of the regenerated air.

[0073] In one embodiment of the present invention, the sum of the regenerated air volume and the air volume through the bypass duct is the full air volume of the bypass duct.

[0074] In one embodiment of the present invention, the fresh air device further includes a supply air fan and an exhaust air fan. The supply air fan is installed at the indoor air supply outlet for supplying outdoor fresh air into the room, and the exhaust air fan is installed at the outdoor exhaust outlet for exhausting indoor return air to the outside.

[0075] In one embodiment of the present invention, the proportion of regenerated air ranges from [0.1, 0.4].

[0076] In summary, the second type of fresh air device in this embodiment of the invention determines the corresponding ratio of regenerated air based on humidification requirements and heating power range, and adjusts the opening of the bypass ventilation valve accordingly, so as to humidify indoor air more accurately and energy-efficiently, thereby improving the user experience.

[0077] It should be noted that for details not disclosed in the second type of fresh air device in the embodiments of the present invention, please refer to the details disclosed in the control method of the fresh air device in the embodiments of the present invention, which will not be repeated here.

[0078] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0079] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0080] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0082] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0083] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0084] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0085] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for a fresh air device, characterized in that, The fresh air device includes an adsorption rotor, a heat source, and a bypass duct. The heat source is located between the outdoor fresh air inlet and the adsorption rotor to heat the outdoor fresh air to generate regenerated air. The bypass duct is located between the outdoor fresh air inlet and the indoor return air inlet, and a bypass ventilation valve is installed on the bypass duct. The bypass ventilation valve is used to regulate the airflow of the regenerated air and the airflow through the bypass duct. The adsorption rotor is used to collect moisture from the indoor return air and release it into the room with the regenerated air to humidify the indoor air. The control method includes: The target humidification amount of the indoor air, the full air volume of the bypass vent, and the heating power range of the heat source are obtained. Determining the proportion of regenerated air based on the target humidification capacity and the heating power range includes: Based on the target humidification amount, multiple air volume values ​​of the regenerated air are determined, and multiple heating powers corresponding to the multiple air volume values ​​of the regenerated air are determined. Under the condition of satisfying the target humidification amount, the air volume of the regenerated air is reduced and the temperature of the regenerated air is increased. Under the limitation of the upper limit of the temperature of the regenerated air, there exists an air volume of the regenerated air that minimizes the heating power of the heat source, i.e., the optimal regenerated air volume. At least one preset heating power that meets the heating power range among the plurality of heating powers is determined; The minimum preset heating power among the at least one preset heating power is compared and selected, and the proportion of regenerated air is determined according to the air volume value of the regenerated air corresponding to the minimum preset heating power. The air volume value of the regenerated air corresponding to the minimum preset heating power is the optimal regenerated air volume. The opening degree of the bypass ventilation valve is adjusted according to the proportion of regenerated air and the total air volume.

2. The control method according to claim 1, characterized in that, Obtaining the heating power range of the heat source includes: Obtain the temperature range of the regenerated air; The heating power range of the heat source is determined based on the temperature range of the regenerated air.

3. The control method according to any one of claims 1-2, characterized in that, The sum of the regenerated air volume and the air volume through the bypass duct is the full air volume of the bypass duct.

4. The control method according to claim 3, characterized in that, The fresh air system also includes a supply air fan and an exhaust air fan. The supply air fan is installed at the indoor air supply outlet to deliver fresh outdoor air into the room, and the exhaust air fan is installed at the outdoor exhaust outlet to exhaust indoor return air to the outside. The indoor air supply volume is equal to the outdoor exhaust volume.

5. The control method according to claim 3, characterized in that, The percentage of regenerated air is in the range of [0.1, 0.4].

6. A computer-readable storage medium, characterized in that, It stores a control program for a fresh air device, which, when executed by a processor, implements the control method for the fresh air device according to any one of claims 1-5.

7. A fresh air device, characterized in that, The system includes a memory, a processor, and a control program for a fresh air device stored in the memory and executable on the processor. When the processor executes the control program for the fresh air device, it implements the control method for the fresh air device according to any one of claims 1-5.

8. A fresh air device for implementing the control method of the fresh air device according to any one of claims 1-5, characterized in that, The fresh air device includes an adsorption rotor, a heat source, a bypass ventilation duct, and a control component. The heat source is located between the outdoor fresh air inlet and the adsorption rotor to heat the outdoor fresh air to generate regenerated air. The bypass ventilation duct is located between the outdoor fresh air inlet and the indoor return air inlet, and a bypass ventilation valve is installed on the bypass ventilation duct. The bypass ventilation valve is used to regulate the airflow of the regenerated air and the airflow through the bypass ventilation duct. The adsorption rotor is used to collect moisture from the indoor return air and release it into the room with the regenerated air to humidify the indoor air. The control component is used for: The system obtains the target humidification amount of the indoor air, the full air volume of the bypass ventilator, and the heating power range of the heat source; determines the proportion of regenerated air based on the target humidification amount and the heating power range; and adjusts the opening of the bypass ventilator based on the proportion of regenerated air and the full air volume.

9. The fresh air device according to claim 8, characterized in that, The control component is also used for: Based on the target humidification amount, determine multiple air volume values ​​of the regenerated air and determine multiple heating powers corresponding to the multiple air volume values ​​of the regenerated air; determine at least one preset heating power that meets the heating power range among the multiple heating powers; compare and select the minimum preset heating power among the at least one preset heating power, and determine the proportion of the regenerated air based on the air volume value of the regenerated air corresponding to the minimum preset heating power.

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