Control method of fresh air device, storage medium, fresh air device

Abstract

The application discloses a fresh air device control method, a storage medium and a fresh air device. The fresh air device comprises an adsorption runner, a heat source, a supply air side fan and an exhaust air side fan. The heat source is used for heating outdoor fresh air. The adsorption runner is used for recycling moisture of indoor return air passing through the exhaust air side fan, so that the moisture is released to an indoor environment with the outdoor fresh air through the supply air side fan. The control method comprises the following steps: acquiring and calculating an actual value of a humidity adjusting demand of the indoor environment at a current time according to an actual value of the humidity of the indoor environment at the current time and a predicted value of the humidity adjusting demand; and adjusting a heating power of the heat source and / or a rotating speed of the adsorption runner according to the actual value of the humidity adjusting demand, so that an output value of the fresh air device is equal to the actual value of the humidity adjusting demand of the indoor environment at the current time, thereby timely and accurately adjusting the indoor humidity, preventing frequent start and stop of the fresh air device, and prolonging a service life of the fresh air device.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, and in particular to a control method of a fresh air device, a storage medium, and a fresh air device. BACKGROUND

[0002] The comfort of air often directly affects the user's feeling or health temperature. Medical research shows that when the indoor relative humidity is between 45-65%, the human comfort reaches the best, and when the relative humidity is too low, the human body is prone to have skin peeling, dry mouth and other health problems.

[0003] With the continuous improvement of people's quality of life, the regulation of air humidity is becoming more and more strict. In the related technology, during the process of humidifying and dehumidifying the air, the indoor humidity condition of the next period of time is generally simply captured by relying on the simple control of the device's own humidity sensor, which often leads to control hysteresis, and often causes the problem of mismatch between the indoor environment's humidity demand and the system output. On the one hand, the indoor relative humidity fluctuates greatly, and the comfort is affected. On the other hand, the internal elements of the device (such as the heater, the fan, etc.) are frequently started and stopped, and the service life is shortened. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a control method of a fresh air device, which can accurately obtain the actual value of the indoor environment's humidity demand, and then control the fresh air device accordingly, so as to timely and accurately regulate the indoor humidity, prevent the fresh air device from being frequently started and stopped, and improve the service life of the fresh air device.

[0005] A second object of the present application is to provide a computer-readable storage medium.

[0006] A third object of the present application is to provide a first fresh air device.

[0007] A fourth object of the present application is to provide a second fresh air device.

[0008] To achieve the above object, the first aspect of the present application provides a control method of a fresh air device, the fresh air device comprising an adsorption runner, a heat source, a supply air fan and an exhaust air fan, the heat source being configured to heat outdoor fresh air, the adsorption runner being configured to recover moisture of indoor return air passing through the exhaust air fan, so that the moisture is released to an indoor environment through the supply air fan with the outdoor fresh air, the control method comprising: obtaining an actual value of humidity of the indoor environment at a current time and a predicted value of humidity control demand of the indoor environment at the current time; calculating an actual value of humidity control demand of the indoor environment at the current time according to the actual value of humidity of the indoor environment at the current time and the predicted value of humidity control demand of the indoor environment at the current time; adjusting a heating power of the heat source and / or a rotating speed of the adsorption runner according to the actual value of humidity control demand, so that an output value of humidity control of the fresh air device is equal to the actual value of humidity control demand of the indoor environment at the current time.

[0009] The control method of the fresh air device in the embodiment can accurately calculate the actual value of humidity control demand of the indoor environment at the current time according to the actual value of humidity of the indoor environment at the current time and the predicted value of humidity control demand of the indoor environment at the current time, and then control the heating power of the heat source and / or the rotating speed of the adsorption runner in the fresh air device according to the actual value of humidity control demand, so that the output value of humidity control of the fresh air device is equal to the actual value of humidity control demand of the indoor environment at the current time, thereby accurately adjusting the indoor humidity and preventing the fresh air device from frequently starting and stopping, and improving the service life of the fresh air device.

[0010] In some embodiments of the present application, the predicted value of humidity control demand of the indoor environment at the current time is obtained by: calculating a predicted value of humidity of the indoor environment at the current time according to a predicted value of humidity and a predicted value of humidity control demand of the indoor environment at a previous time; obtaining a set value of humidity of the indoor environment at the current time; and calculating the predicted value of humidity control demand of the indoor environment at the current time according to the set value of humidity, the predicted value of humidity and an actual value of humidity of the indoor environment at the current time.

[0011] In some embodiments of the present application, the predicted value of humidity of the indoor environment at the current time is calculated according to the following formula: Hob(n)=ε*Hob(n-1)+(1-ε)*Hc(n-1), wherein Hob(n) is the predicted value of humidity of the indoor environment at the current time, Hob(n-1) is the predicted value of humidity of the indoor environment at the previous time, Hc(n-1) is the predicted value of humidity control demand of the indoor environment at the previous time, and ε is a preset parameter.

[0012] In some embodiments of the present invention, the predicted humidity demand of the indoor environment at the current moment is calculated according to the following formula: Hc(n)=a*Hset(n)+b*Hob(n)+c*Hr(n), where Hc(n) is the predicted humidity demand of the indoor environment at the current moment, Hset(n) is the humidity setpoint of the indoor environment at the current moment, Hob(n) is the predicted humidity of the indoor environment at the current moment, Hr(n) is the actual humidity of the indoor environment at the current moment, a, b, and c are all preset parameters, and in the initial moment, the predicted humidity of the indoor environment is equal to the actual humidity.

[0013] In some embodiments of the present invention, the actual value of the humidity demand of the indoor environment at the current moment is calculated according to the following formula: Hw=(Hr(n)-Hc(n))*α where Hw is the actual value of the humidity demand of the indoor environment at the current moment, Hr(n) is the actual value of the humidity of the indoor environment at the current moment, Hc(n) is the predicted value of the humidity demand of the indoor environment at the current moment, and α is a preset parameter.

[0014] In some embodiments of the present invention, adjusting the heating power of the heat source and / or the rotation speed of the adsorption wheel according to the actual value of the humidity control requirement includes: obtaining the humidity control output value of the fresh air device; increasing the heating power of the heat source and / or the rotation speed of the adsorption wheel when the humidity control output value of the fresh air device is less than the actual value of the humidity control requirement; and decreasing the heating power of the heat source and / or the rotation speed of the adsorption wheel when the humidity control output value of the fresh air device is greater than the actual value of the humidity control requirement.

[0015] In some embodiments of the present invention, adjusting the heating power of the heat source and the rotation speed of the adsorption wheel according to the actual value of the humidity control requirement includes: reducing the heating power of the heat source when the humidity control output value of the fresh air device is greater than the actual value of the humidity control requirement; and reducing the rotation speed of the adsorption wheel when the current heating power of the heat source is a minimum preset power threshold and the humidity control output value of the fresh air device is greater than the actual value of the humidity control requirement.

[0016] In some embodiments of the present invention, the control method further includes: when the actual value of the humidity demand of the indoor environment at the current moment is continuously less than a preset threshold for a preset duration, controlling the heat source and the adsorption wheel to shut down.

[0017] 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 according to the above embodiments.

[0018] The computer-readable storage medium of this invention executes the control program of the fresh air device stored thereon through a processor, which can accurately obtain the actual value of the humidity control requirement of the indoor environment, and then control the fresh air device accordingly to adjust the indoor humidity in a timely and accurate manner, prevent the fresh air device from frequently starting and stopping, and improve the service life of the fresh air device.

[0019] To achieve the above objectives, a third aspect of the present invention provides a first type of fresh air device, which includes 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 according to the above embodiments.

[0020] The first type of fresh air device in this invention executes the control program of the fresh air device stored in the memory through the processor, which can accurately obtain the actual value of the humidity demand of the indoor environment, and then control the fresh air device accordingly to adjust the indoor humidity in a timely and accurate manner, prevent the fresh air device from frequently starting and stopping, and improve the service life of the fresh air device.

[0021] To achieve the above objectives, a fourth aspect of the present invention provides a second type of fresh air device. The fresh air device includes an adsorption rotor, a heat source, a supply-side fan, an exhaust-side fan, and a control component. The heat source is used to heat outdoor fresh air. The adsorption rotor is used to recover moisture from indoor return air passing through the exhaust-side fan, so that the moisture is released into the indoor environment along with the outdoor fresh air through the supply-side fan. The control component is used to: acquire the actual humidity value and the predicted humidity demand value of the indoor environment at the current moment; calculate the actual humidity demand value of the indoor environment at the current moment based on the actual humidity value and the predicted humidity demand value; and adjust the heating power of the heat source and / or the rotation speed of the adsorption rotor according to the actual humidity demand value, so that the humidity output value of the fresh air device is equal to the actual humidity demand value of the indoor environment at the current moment.

[0022] In this embodiment, the fresh air device accurately calculates the actual humidity requirement of the indoor environment at the current moment based on the actual humidity value and the predicted humidity requirement. Then, based on the actual humidity requirement, it controls the heating power of the heat source and / or the rotation speed of the adsorption wheel in the fresh air device, so that the humidity output value of the fresh air device is equal to the actual humidity requirement of the indoor environment at the current moment. This enables accurate regulation of indoor humidity, prevents frequent start-stop of the fresh air device, and improves the service life of the fresh air device.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] Figure 1A This is a schematic diagram of a fresh air device according to an embodiment of the present invention;

[0025] Figure 1B This is a schematic diagram of a fresh air device according to another embodiment of the present invention;

[0026] Figure 2 This is a flowchart of a control method for a fresh air device according to an embodiment of the present invention;

[0027] Figure 3 This is a flowchart of a control method for a fresh air device according to another embodiment of the present invention;

[0028] Figure 4 This is a flowchart of a control method for a fresh air device according to another embodiment of the present invention;

[0029] Figure 5 This is a flowchart of a control method for a fresh air device according to another embodiment of the present invention;

[0030] Figure 6 This is a structural block diagram of a first type of fresh air device according to an embodiment of the present invention;

[0031] Figure 7 This is a structural block diagram of the second fresh air device according to an embodiment of the present invention. Detailed Implementation

[0032] 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.

[0033] The control method, storage medium, and fresh air device of the present invention are described below with reference to the accompanying drawings.

[0034] like Figure 1A As shown, the fresh air device in this embodiment of the invention includes an adsorption rotor 1, a heat source 2, a supply-side fan 3, and an exhaust-side fan 4. The supply-side fan 3 is located at the indoor air supply outlet and is used to supply outdoor fresh air into the room. The exhaust-side 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. The heat source 2 is located at the outdoor fresh air outlet and is used to heat the outdoor fresh air. In other embodiments, such as... Figure 1BAs shown, the fresh air system also includes a bypass ventilation valve 5, which is located between the outdoor fresh air inlet and the indoor supply air inlet to regulate the airflow of the outdoor fresh air heated by the heat source 2. In the diagram, 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. The heat source 2, the adsorption rotor 1, and the supply fan 3 form the air supply channel for supplying air into the room. Outdoor fresh air enters the room after passing through the heat source 2 and the adsorption rotor 1 under the action of the supply fan 3. The adsorption rotor 1 and the exhaust fan 4 form the exhaust channel for exhausting air to the outside. Indoor return air is discharged outdoors through the adsorption rotor 1 under the action of the exhaust fan 4.

[0035] Figure 2 This is a flowchart of a control method for a fresh air device according to an embodiment of the present invention.

[0036] like Figure 2 As shown, the present invention proposes a control method for a fresh air device, which includes the following steps:

[0037] S10: Obtain the actual humidity value and predicted humidity demand value of the indoor environment at the current moment.

[0038] Specifically, in this embodiment, the actual humidity value of the indoor environment at the current moment can be obtained through a humidity sensor. Optionally, since the humidity may vary at different locations within the indoor environment, humidity sensors can be installed at different locations within the indoor environment. Then, the actual humidity value of the indoor environment at the current moment is determined by averaging or multiplying the humidity information obtained from multiple sensors by a corresponding expected value. Of course, other methods can also be used to obtain the actual humidity value of the indoor environment at the current moment. This embodiment only limits the obtained actual humidity value to an accurate humidity value, without limiting the acquisition method.

[0039] In this embodiment, the predicted humidity requirement value for the current indoor environment represents the predicted humidity requirement value under the current predicted indoor humidity value. In some embodiments, such as... Figure 3 As shown, the predicted humidity control demand for the indoor environment at the current moment is obtained, including:

[0040] S301, calculate the predicted humidity value of the indoor environment at the current moment based on the predicted humidity value of the indoor environment at the previous moment and the predicted humidity demand value.

[0041] S302, obtain the current humidity setting value of the indoor environment.

[0042] S303 calculates the predicted humidity requirement of the indoor environment at the current moment based on the current humidity setpoint, predicted humidity value, and actual humidity value.

[0043] Specifically, in this embodiment, the predicted humidity value of the indoor environment at the current moment can be calculated based on information such as the historical change value or trend of indoor humidity. Specifically, the predicted humidity value of the indoor environment at the current moment can be calculated based on the predicted humidity value of the indoor environment at the previous moment and the predicted indoor demand value of the indoor environment at the previous moment. In some embodiments, the predicted humidity value of the indoor environment at the current moment can be calculated according to the following formula: Hob(n)=ε*Hob(n-1)+(1-ε)*Hc(n-1), where Hob(n) is the predicted humidity value of the indoor environment at the current moment, Hob(n-1) is the predicted humidity value of the indoor environment at the previous moment, Hc(n-1) is the predicted humidity demand value of the indoor environment at the previous moment, and ε is a preset parameter. Optionally, the value range of ε can be [0.1, 0.9].

[0044] After calculating the predicted humidity value of the indoor environment at the current moment through the above example, this embodiment also obtains the humidity setpoint and actual humidity value of the indoor environment at the current moment. It can be understood that the humidity setpoint can be the setpoint set on the air conditioner, the purpose of which is to adjust the humidity of the indoor environment at the current moment to the humidity setpoint. After obtaining the humidity setpoint of the indoor environment at the current moment, this embodiment calculates the predicted humidity demand value of the indoor environment at the current moment based on the humidity setpoint, predicted humidity value, and actual humidity value. Specifically, in some examples, the predicted humidity demand of the indoor environment at the current moment is calculated according to the following formula: Hc(n)=a*Hset(n)+b*Hob(n)+c*Hr(n), where Hc(n) is the predicted humidity demand of the indoor environment at the current moment, Hset(n) is the humidity setpoint of the indoor environment at the current moment, Hob(n) is the predicted humidity of the indoor environment at the current moment, Hr(n) is the actual humidity of the indoor environment at the current moment, and a, b, and c are preset parameters. For example, the value range of a, b, and c can be [0,10] and in the initial moment, the predicted humidity of the indoor environment is equal to the actual humidity, that is, Hob(0) is equal to Hr(0).

[0045] S20, calculate the actual humidity demand of the indoor environment at the current moment ((H_r(n)-H_c(n))*α) based on the actual humidity value of the indoor environment at the current moment and the predicted humidity demand value.

[0046] Specifically, after calculating the predicted humidity requirement of the indoor environment at the current moment, the actual humidity requirement of the indoor environment at the current moment can be further calculated based on the predicted humidity requirement and the actual humidity value of the indoor environment at the current moment. It is understood that there is a certain difference between the predicted humidity requirement and the actual humidity requirement. Furthermore, this embodiment does not simply add or subtract a difference from the predicted humidity requirement, but also uses the actual humidity value in the calculation, thereby obtaining a more accurate actual humidity requirement. In some embodiments, the actual humidity requirement of the indoor environment at the current moment is calculated according to the following formula: Hw=(Hr(n)-Hc(n))*α, where Hw is the actual humidity requirement of the indoor environment at the current moment, Hr(n) is the actual humidity value of the indoor environment at the current moment, Hc(n) is the predicted humidity requirement of the indoor environment at the current moment, and α is a preset parameter, and the value range of α can be [0.8, 1.5].

[0047] S30 adjusts the heating power of the heat source and / or the rotation speed of the adsorption wheel according to the actual value of the humidity control demand, so that the humidity control output value of the fresh air unit is equal to the actual value of the humidity control demand of the indoor environment at the current moment.

[0048] Specifically, in combination Figure 1A , Figure 1B It can be seen that when the heating power of heat source 2 is increased, the temperature of the outdoor fresh air after passing through heat source 2 can be raised, thereby bringing more moisture adsorbed in the adsorption wheel 1 into the indoor environment. Furthermore, since the adsorption wheel 1 contains adsorbed moisture, and the outdoor fresh air only passes through a portion of the adsorption wheel 1, if the rotation speed of the adsorption wheel 1 is low, the amount of moisture brought into the indoor environment from the adsorption wheel 1 after the outdoor fresh air continuously passes through that portion will be relatively small, resulting in a poorer humidity control effect. In other words, by adjusting the heating power of the heat source and / or the rotation speed of the adsorption wheel, the humidity control output value of the device can be controlled. Conversely, it can be deduced that in this embodiment, after determining the actual humidity control requirement, the heating power of the heat source and the rotation speed of the adsorption wheel can be adjusted according to this actual humidity control requirement, so that the adjusted output value of the fresh air device is equal to the actual humidity control requirement of the indoor environment at the current moment.

[0049] It should be noted that in this embodiment, the actual humidity requirement of the indoor environment is calculated and updated at each moment. Then, the heating power of the heat source and / or the rotation speed of the adsorption wheel are adjusted according to the updated actual humidity requirement, so as to timely and accurately control the humidity output value of the fresh air device to be equal to the actual humidity requirement of the indoor environment at the current moment.

[0050] More specifically, the humidity control output value of the fresh air unit can be represented by ((Hr(n)-f3(P))(1-f4(N)), where f3(P) represents the adjustment of the heating power of the heat source, and f4(N) represents the adjustment of the rotation speed of the adsorption wheel. For example, f3(P) = a1*P α1 +b1*P β1 +c1*P θ1 +…+d1, where a1, b1, c1, d1, α1, β1, and θ1 are all preset parameters that can be determined in advance through simulation. P can be represented as the preset power of the heat source; f4(N)=a2*N α2 +b2*N β2 +c2*N θ2 +…+d2, where a2, b2, c2, d2, α2, β2, and θ2 are all preset parameters that can be determined in advance through simulation, and N can be represented as the rotational speed of the adsorption wheel.

[0051] In some embodiments of the present invention, such as Figure 4 As shown, the heating power of the heat source and / or the rotation speed of the adsorption wheel are adjusted according to the actual humidity control requirements, including:

[0052] S401, obtain the humidity control output value of the fresh air unit.

[0053] S402, when the humidity output value of the fresh air unit is less than the actual humidity requirement, increase the heating power of the heat source and / or the rotation speed of the adsorption wheel.

[0054] S403, when the humidity output value of the fresh air unit is greater than the actual humidity demand, reduce the heating power of the heat source and / or the rotation speed of the adsorption wheel.

[0055] Specifically, during the control of the heat source and adsorption wheel of the fresh air device, the humidity control output value of the fresh air device can be obtained. This output value is then compared with the actual humidity control requirement. Based on the comparison result, the heating power of the heat source and the rotation speed of the adsorption wheel are adjusted. As analyzed in the above embodiments, the humidity control output value of the fresh air device is directly proportional to the heating power of the heat source and the rotation speed of the adsorption wheel. That is, increasing the heating power of the heat source and / or the rotation speed of the adsorption wheel will increase the humidity control output value of the fresh air device. Therefore, when the humidity control output value of the fresh air device is less than the actual humidity control requirement, the heating power of the heat source and / or the rotation speed of the adsorption wheel can be increased. Conversely, when the humidity control output value of the fresh air device is greater than the actual humidity control requirement, the heating power of the heat source and / or the rotation speed of the adsorption wheel can be decreased.

[0056] It is understood that in the above embodiments, the heat source or the adsorption wheel can be adjusted individually according to the actual humidity control requirements, or both the heat source and the adsorption wheel can be adjusted simultaneously according to the actual humidity control requirements. In some embodiments, such as... Figure 5 As shown, if both the heat source and the adsorption wheel are adjusted simultaneously, the following steps may be included:

[0057] S501: When the humidity output value of the fresh air unit is greater than the actual humidity demand, reduce the heating power of the heat source.

[0058] S502, when the current heating power of the heat source is the lowest preset power threshold and the humidity output value of the fresh air device is greater than the actual humidity demand value, reduce the rotation speed of the adsorption wheel.

[0059] Specifically, when adjusting the heating power of the heat source and the rotation speed of the adsorption wheel according to the humidity control requirements, the heating power of the heat source can be adjusted first. Once the ability of the heat source to regulate indoor humidity is minimized, the rotation speed of the adsorption wheel can then be adjusted to ensure that the humidity control output value of the fresh air system matches the actual humidity control requirement. It should be noted that the minimum preset power threshold in this embodiment can be set according to the specifications of the heat source in the fresh air system.

[0060] In some embodiments, the control method of the fresh air device further includes: when the actual value of the humidity demand of the indoor environment at the current moment is continuously less than a preset threshold (0) for a preset duration, controlling the heat source and the adsorption wheel to shut down.

[0061] Specifically, other humidity control devices can also be used to regulate humidity in the indoor environment to improve the humidity control speed. Therefore, if the calculated actual humidity demand of the indoor environment at the current moment is less than the preset threshold and the duration is the preset duration, it means that there is no need to regulate the humidity of the indoor environment at the current time, that is, the humidity control work has been completed. Therefore, the heat source and adsorption wheel can be turned off. Optionally, the preset threshold can be 0, and the preset duration can be in the range of [10 seconds, 50 seconds].

[0062] In one specific embodiment, when the device starts running, the current humidity setpoint Hset(n) of the indoor environment is 60%, while the actual humidity Hr(n) is 30%. The calculated humidity demand prediction Hc(n) is 55%, and the humidity prediction Hob(n) is the same as the actual humidity at the start of operation, which is 30%. Assuming that after adjusting the preset parameters in the above embodiment, the calculated humidity demand and humidity output of the fresh air unit are 0.25 and 0.2 respectively, since the humidity output is less than the humidity demand, the heating power of the heat source can be maximized, and the rotation speed of the adsorption wheel can be adjusted to the maximum humidification speed N1.

[0063] After 1 minute, the actual humidity value Hr(n) of the indoor environment at the current moment is 31%. The predicted humidity value Hob(n) of the indoor environment at the current moment is calculated to be 32%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 55%. The calculated humidity demand value of the indoor environment at the current moment is 0.24. The humidity output value of the fresh air device in the current environment is 0.2, which is still less than the humidity demand value. Therefore, the heating power P of the heat source and the rotation speed N of the adsorption wheel remain at the state of the previous moment, and humidification continues.

[0064] After 40 minutes, the actual humidity value Hr(n) of the indoor environment at the current moment is 50%. At this time, the predicted humidity value Hob(n) of the indoor environment at the current moment is calculated to be 51%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 58%. The calculated humidity demand value of the indoor environment at the current moment is 0.1. The humidity output value of the fresh air device in the current environment is 0.15, which is greater than the humidity demand value. Therefore, the heating power P of the heat source decreases, the rotation speed N of the adsorption wheel decreases, and humidification continues.

[0065] After 60 minutes, the actual humidity value Hr(n) of the indoor environment at the current moment is 57%. The predicted humidity value Hob(n) of the indoor environment at the current moment is calculated to be 58%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 59%. The calculated humidity demand value of the indoor environment at the current moment is 0.02. The humidity output value of the fresh air device in the current environment is 0.03, which is greater than the humidity demand value. Therefore, the heating power P of the heat source continues to decrease, and the rotation speed N of the adsorption wheel decreases to the minimum motor speed N2 and then stops decreasing.

[0066] After 70 minutes, the actual humidity value Hr(n) of the indoor environment at the current moment is 59%. At this time, the predicted humidity value Hob(n) of the indoor environment at the current moment is calculated to be 60%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 60%. The calculated humidity demand value of the indoor environment at the current moment is 0.01. The humidity output value of the fresh air device under the current environment is 0.01. Since the two are equal, the heating power P of the heat source and the rotation speed N of the adsorption wheel remain unchanged.

[0067] After 80 minutes, the actual humidity value Hr(n) of the indoor environment at the current moment is 60%. At this time, the predicted humidity value Hob(n) of the indoor environment at the current moment is calculated to be 60%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 60%. The calculated humidity demand value of the indoor environment at the current moment is 0.0, which reaches the target state. At this time, the heating power P of the heat source is reduced to minimize the humidification capacity of the equipment.

[0068] After 90 minutes, the actual humidity value Hr(n) of the indoor environment at the current moment is 61%, the predicted humidity value Hob(n) of the indoor environment at the current moment is 61%, and the predicted humidity demand value Hc(n) of the indoor environment at the current moment is calculated to be 61%. The calculated humidity demand value of the indoor environment at the current moment is -0.01, which exceeds the target state. At this time, the adsorption wheel and heat source are turned off.

[0069] In summary, the control method of the fresh air device in this embodiment of the invention can accurately obtain the actual value of the humidity control requirement of the indoor environment, and then control the fresh air device accordingly to adjust the indoor humidity in a timely and accurate manner, prevent the fresh air device from frequently starting and stopping, and improve the service life of the fresh air device.

[0070] 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.

[0071] According to embodiments of the present invention, a computer-readable storage medium, by executing a control program for a fresh air device stored thereon through a processor, can accurately obtain the actual value of the humidity control requirements of the indoor environment, and then control the fresh air device accordingly to adjust the indoor humidity in a timely and accurate manner, prevent the fresh air device from frequently starting and stopping, and improve the service life of the fresh air device.

[0072] Figure 6 This is a structural block diagram of a first type of fresh air device according to an embodiment of the present invention.

[0073] Furthermore, such as Figure 6As shown, the present invention proposes a first fresh air device 100, which includes a memory 101, a processor 102, and a control program for the fresh air device stored in the memory 101 and executable on the processor 102. When the processor 102 executes the control program for the fresh air device, it implements the control method for the fresh air device according to the above embodiments.

[0074] The first type of fresh air device in this invention executes the control program of the fresh air device stored in the memory through the processor, which can accurately obtain the actual value of the humidity demand of the indoor environment, and then control the fresh air device accordingly to adjust the indoor humidity in a timely and accurate manner, prevent the fresh air device from frequently starting and stopping, and improve the service life of the fresh air device.

[0075] Figure 7 This is a structural block diagram of the second fresh air device according to an embodiment of the present invention.

[0076] Furthermore, such as Figure 7 As shown, the present invention proposes a second type of fresh air device 100. This fresh air device 200 includes an adsorption rotor 1, a heat source 2, a supply air fan 3, an exhaust air fan 4, and a control component 201. The heat source 2 is used to heat the outdoor fresh air. The adsorption rotor 1 is used to recover moisture from the indoor return air passing through the exhaust air fan, so that the moisture is released into the indoor environment along with the outdoor fresh air through the supply air fan. It should be noted that the fresh air device 100 in this embodiment can also be provided with a bypass ventilation duct, which is equipped with a bypass ventilation valve 5. The valve 5 is controlled by... The opening degree of the bypass ventilation valve 5 can adjust the air volume of outdoor fresh air passing through the heat source 2. The control component 201 is used to: obtain the actual humidity value and the predicted humidity demand value of the indoor environment at the current moment; calculate the actual humidity demand value of the indoor environment at the current moment based on the actual humidity value and the predicted humidity demand value; and adjust the heating power of the heat source 2 and / or the rotation speed of the adsorption wheel 1 according to the actual humidity demand value so that the humidity output value of the fresh air device 200 is equal to the actual humidity demand value of the indoor environment at the current moment.

[0077] In some embodiments of the present invention, the control component is further configured to: calculate the humidity prediction value of the indoor environment at the current moment based on the humidity prediction value and humidity regulation demand prediction value of the indoor environment at the previous moment; obtain the humidity setting value of the indoor environment at the current moment; and calculate the humidity regulation demand prediction value of the indoor environment at the current moment based on the humidity setting value, humidity prediction value and actual humidity value of the indoor environment at the current moment.

[0078] In some embodiments of the present invention, the predicted humidity value of the indoor environment at the current moment is calculated according to the following formula: Hob(n)=ε*Hob(n-1)+(1-ε)*Hc(n-1), where Hob(n) is the predicted humidity value of the indoor environment at the current moment, Hob(n-1) is the predicted humidity value of the indoor environment at the previous moment, Hc(n-1) is the predicted humidity demand value of the indoor environment at the previous moment, and ε is a preset parameter.

[0079] In some embodiments of the present invention, the predicted humidity demand of the indoor environment at the current moment is calculated according to the following formula: Hc(n)=a*Hset(n)+b*Hob(n)+c*Hr(n), where Hc(n) is the predicted humidity demand of the indoor environment at the current moment, Hset(n) is the humidity setpoint of the indoor environment at the current moment, Hob(n) is the predicted humidity of the indoor environment at the current moment, Hr(n) is the actual humidity of the indoor environment at the current moment, a, b, and c are all preset parameters, and in the initial moment, the predicted humidity of the indoor environment is equal to the actual humidity.

[0080] In some embodiments of the present invention, the actual value of the humidity demand of the indoor environment at the current moment is calculated according to the following formula: Hw=(Hr(n)-Hc(n))*α, where Hw is the actual value of the humidity demand of the indoor environment at the current moment, Hr(n) is the actual value of the humidity of the indoor environment at the current moment, Hc(n) is the predicted value of the humidity demand of the indoor environment at the current moment, and α is a preset parameter.

[0081] In some embodiments of the present invention, the control component is further configured to: acquire the humidity control output value of the fresh air device; increase the heating power of the heat source and / or the rotation speed of the adsorption wheel when the humidity control output value of the fresh air device is less than the actual humidity control requirement; and decrease the heating power of the heat source and / or the rotation speed of the adsorption wheel when the humidity control output value of the fresh air device is greater than the actual humidity control requirement.

[0082] In some embodiments of the present invention, the control component is further configured to: reduce the heating power of the heat source when the humidity output value of the fresh air device is greater than the actual humidity demand value; and reduce the rotation speed of the adsorption wheel when the current heating power of the heat source is the lowest preset power threshold and the humidity output value of the fresh air device is greater than the actual humidity demand value.

[0083] In some embodiments of the present invention, the control component is further configured to: control the heat source and the adsorption wheel to shut down when the actual value of the humidity demand of the indoor environment at the current moment is continuously less than a preset threshold for a preset duration.

[0084] It should be noted that the specific implementation of the second type of fresh air device in this embodiment can be found in the specific implementation of the control method of the fresh air device in the above embodiments, and will not be repeated here.

[0085] In summary, the second type of fresh air device in this embodiment of the invention accurately calculates the actual humidity demand of the indoor environment at the current moment based on the actual humidity value and the predicted humidity demand value. Then, based on the actual humidity demand value, it controls the heating power of the heat source and / or the rotation speed of the adsorption wheel in the fresh air device, so that the humidity output value of the fresh air device is equal to the actual humidity demand value of the indoor environment at the current moment. This enables accurate regulation of indoor humidity, prevents frequent start-stop of the fresh air device, and improves the service life of the fresh air device.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0091] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0092] 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.

[0093] 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 method of controlling a fresh air device, characterized by, The fresh air device comprises an adsorption runner, a heat source, a supply air side fan and an exhaust air side fan, the heat source is used for heating outdoor fresh air, the adsorption runner is used for recovering moisture of indoor return air passing through the exhaust air side fan, so that the moisture is released to an indoor environment through the supply air side fan with the outdoor fresh air, and the control method comprises: obtaining an actual value of the humidity of the indoor environment at the current time; calculating a predicted value of the humidity of the indoor environment at the current time according to a predicted value of the humidity of the indoor environment at the previous time and a predicted value of the humidity control demand of the indoor environment at the previous time, comprising calculating the predicted value of the humidity of the indoor environment at the current time according to the formula Hob(n)=ε*Hob(n-1)+(1-ε)*Hc(n-1): wherein Hob(n) is the predicted value of the humidity of the indoor environment at the current time, Hob(n-1) is the predicted value of the humidity of the indoor environment at the previous time, Hc(n-1) is the predicted value of the humidity control demand of the indoor environment at the previous time, and ε is a preset parameter; obtaining a set value of the humidity of the indoor environment at the current time; calculating a predicted value of the humidity control demand of the indoor environment at the current time according to the set value of the humidity of the indoor environment at the current time, the predicted value of the humidity and the actual value of the humidity; calculating an actual value of the humidity control demand of the indoor environment at the current time according to the actual value of the humidity of the indoor environment at the current time and the predicted value of the humidity control demand of the indoor environment at the current time; adjusting the heating power of the heat source and / or the rotating speed of the adsorption runner according to the actual value of the humidity control demand, so that the humidity control output value of the fresh air device is equal to the actual value of the humidity control demand of the indoor environment at the current time.

2. The control method according to claim 1, characterized by, The predicted value of the humidity control demand of the indoor environment at the current time is calculated according to the following formula: Hc(n)=a*Hset(n)+b*Hob(n)+c*Hr(n) wherein Hc(n) is the predicted value of the humidity control demand of the indoor environment at the current time, Hset(n) is the set value of the humidity of the indoor environment at the current time, Hob(n) is the predicted value of the humidity of the indoor environment at the current time, Hr(n) is the actual value of the humidity of the indoor environment at the current time, a, b and c are all preset parameters, and in the initial time, the predicted value of the humidity of the indoor environment is equal to the actual value of the humidity.

3. The control method according to claim 1, characterized by, The actual value of the humidity control demand of the indoor environment at the current time is calculated according to the following formula: Hw=(Hr(n)-Hc(n))*α wherein Hw is the actual value of the humidity control demand of the indoor environment at the current time, Hr(n) is the actual value of the humidity of the indoor environment at the current time, Hc(n) is the predicted value of the humidity control demand of the indoor environment at the current time, and α is a preset parameter.

4. The control method according to claim 1, characterized by, Adjusting the heating power of the heat source and / or the rotating speed of the adsorption runner according to the actual value of the humidity control demand, comprising: obtaining a humidity control output value of the fresh air device; when the humidity control output value of the fresh air device is less than the actual value of the humidity control demand, increasing the heating power of the heat source and / or the rotating speed of the adsorption runner; decrease the heating power of the heat source and / or the rotating speed of the adsorption wheel when the humidification output value of the fresh air device is greater than the actual value of the humidification demand.

5. The control method according to claim 4, characterized by The method further comprises: decrease the heating power of the heat source when the actual value of the humidification demand of the indoor environment is less than the predicted value of the humidification demand of the indoor environment. decrease the rotating speed of the adsorption wheel when the current heating power of the heat source is the lowest preset power threshold and the humidification output value of the fresh air device is greater than the actual value of the humidification demand.

6. The control method according to any one of claims 1 to 5, characterized by, The method further comprises: turn off the heat source and the adsorption wheel when the duration that the actual value of the humidification demand of the indoor environment at the current time is less than the preset threshold value is the preset duration.

7. A computer readable storage medium characterized in that, A storage medium having stored thereon a control program of a fresh air device, the control program of the fresh air device being executed by a processor to implement the control method of the fresh air device according to any one of claims 1-6.

8. A fresh air device, characterized by A storage medium having stored thereon a control program of a fresh air device, the control program of the fresh air device being executed by a processor to implement the control method of the fresh air device according to any one of claims 1-6.

9. A fresh air device, characterized by The fresh air device comprises an adsorption wheel, a heat source, a supply air fan, an exhaust air fan, a bypass air valve and a control component, the heat source is configured to heat outdoor fresh air, the adsorption wheel is configured to recover moisture of indoor return air passing through the exhaust air fan, so that the moisture is released to an indoor environment through the supply air fan with the outdoor fresh air, and the control component is configured to: obtain an actual value of the humidity of the indoor environment at the current time, calculate a predicted value of the humidity of the indoor environment at the current time according to a predicted value of the humidification demand of the indoor environment at a previous time, and the calculation comprises: calculating the predicted value of the humidity of the indoor environment at the current time according to a formula Hob(n)=ε*Hob(n-1)+(1-ε)*Hc(n-1), wherein Hob(n) is the predicted value of the humidity of the indoor environment at the current time, Hob(n-1) is the predicted value of the humidity of the indoor environment at the previous time, Hc(n-1) is the predicted value of the humidification demand of the indoor environment at the previous time, and ε is a preset parameter; obtain a set value of the humidity of the indoor environment at the current time; calculate a predicted value of the humidification demand of the indoor environment at the current time according to the set value of the humidity of the indoor environment at the current time, the predicted value of the humidity and the actual value of the humidity, calculate an actual value of the humidification demand of the indoor environment at the current time according to the actual value of the humidity and the predicted value of the humidification demand of the indoor environment at the current time, and adjust the heating power of the heat source and / or the rotating speed of the adsorption wheel according to the actual value of the humidification demand, so that the humidification output value of the fresh air device is equal to the actual value of the humidification demand of the indoor environment at the current time.

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