An array fan air supply device and its control method

Abstract

This invention provides an array fan air supply device and a control method for the array fans. Multiple array fans are arranged in an array and positioned on the air outlet side of the evaporator, with each array fan having multiple air supply zones. A return air duct is used to transfer the excess cooling / heating energy of the array fans to the air inlet side of the evaporator for pre-cooling the airflow before heat exchange in the evaporator; a valve is installed on the return air duct. The return air duct is designed to recover excess cooling energy generated by the array fans and reintroduce it to the air inlet side of the evaporator, allowing the excess cooling energy to participate in heat exchange again through the evaporator, thereby improving heat exchange efficiency and saving energy.

Description

Technical Field

[0001] This invention relates to the field of marine technology, and in particular to an array fan air supply device and its control method. Background Technology

[0002] Shipboard air conditioning systems are quite large, so array fans are commonly used for heat exchange. Users control the airflow of these array fans to regulate the required cooling or heating output. However, existing shipboard array fans are limited by control precision issues, often producing more cooling or heating than needed. This excess cooling or heating is then directly released outdoors, resulting in energy waste and reduced energy efficiency for heat exchange. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an array fan air supply device that overcomes or at least partially solves the above problems, and can solve the problem of excess cooling or heating generated by the air supply device, thereby improving the efficiency and energy saving of the array fan.

[0004] Specifically, the present invention provides an array fan air supply device, which includes an evaporator, multiple array fans, a return air duct and valves; the multiple array fans are arranged in an array and are located on the air outlet side of the evaporator, and each array fan has multiple air supply areas;

[0005] The return air duct is used to transfer the cooling / heating capacity of the excess air from the array fan to the air inlet side of the evaporator to pre-cool the airflow before heat exchange in the evaporator; the valve is located on the return air duct.

[0006] Optionally, the return air duct connects the air inlet side and the air outlet side of the evaporator, and the outlet of the return air duct is located on the air inlet side of the evaporator.

[0007] Optionally, the outlet of the return air duct is located outdoors, and the return air duct has a heat conduction device inside; a heat exchange device is provided on the air inlet side of the evaporator; the heat conduction device is connected to the heat exchange device, and the heat exchange device is used for heat exchange of the airflow.

[0008] Optionally, the outlet of the return air duct is connected to the toilet.

[0009] Specifically, the control method for any of the above-mentioned array fan air supply devices includes:

[0010] Obtain the target air volume of the array fan;

[0011] Based on the target air supply volume, determine the number of fans that need to be turned on in each air supply area and the rated air volume of each fan;

[0012] The actual air volume of the array fans is determined based on the number of fans that need to be turned on and the rated air volume of the air supply area.

[0013] When the actual air volume is greater than the target air volume, the valve is opened, and the degree of valve opening is positively correlated with the difference between the actual air volume and the target air volume.

[0014] When the actual air supply volume equals the target air supply volume, the valve is closed.

[0015] Optionally, after determining the number of fans to be turned on and the air volume to be supplied based on the air supply area, the method further includes:

[0016] At preset intervals, the system controls the switching of one on fan and one off fan in the air supply area to maintain their operating status.

[0017] Optionally, determine the number of fans to be turned on in each air supply zone and the air supply volume for each air supply zone, including:

[0018] Based on the target air volume, the same number of fans in the air supply area, and the air volume of each fan not less than 80% of the rated air volume, determine the number of fans in each air supply area and the air volume of each fan.

[0019] Optionally, determining the number of fans to be turned on in each air supply zone includes:

[0020] Based on the target air volume and the rated air volume of the fan, determine the number of fans that need to be turned on, and record it as the first quantity;

[0021] Based on the first quantity and the number of air supply areas, determine the number of fans that need to be turned on in each air supply area, and record it as the second quantity;

[0022] When the second quantity is ≥1

[0023] The second quantity is an integer, and the number of fans actually turned on in each air supply area is determined to be the second quantity, and each fan is determined to operate according to the rated air volume;

[0024] When the second quantity has a decimal part, and the decimal part is greater than or equal to 0.3, the actual number of fans turned on in each air supply area is the integer part of the second quantity + 1;

[0025] When the second quantity has a decimal part, and the decimal part is less than 0.3, the number of fans actually turned on in each air supply area is the integer part of the second quantity.

[0026] Optionally, when the decimal part is greater than or equal to 0.3, it includes:

[0027] When the decimal part is between 0.3 and 0.5, the fan should be operated at at least 80% of its rated air volume.

[0028] When the decimal part is between 0.5 and 0.8, the fan should be operated at at least 90% of its rated air volume.

[0029] When the decimal part is greater than 0.8, the fan should be operated at 100% of its rated air volume.

[0030] Optionally, when the decimal part is less than 0.3, it includes:

[0031] The fan can be operated at up to 110% of its rated air volume.

[0032] In this invention, an array fan air supply device includes an evaporator, multiple array fans, a return air duct, and valves. The airflow generated by the array fans enters the evaporator, exchanges heat with it, and generates the cooling capacity required by the user. When the generated cooling capacity exceeds the user's demand, the valve on the return air duct opens, allowing the excess cooling capacity to enter the air inlet side of the evaporator through the return air duct and pass through the evaporator again to participate in heat exchange. When the generated cooling capacity equals the user's demand, the valve on the return air duct closes. The return air duct is designed to recover excess cooling capacity generated by the array fans and redirect it back to the air inlet side of the evaporator, allowing it to re-enter the evaporator for heat exchange, thereby improving heat exchange efficiency and saving energy.

[0033] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0034] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0035] Figure 1 This is a schematic structural diagram of an array fan air supply device according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic partial structural diagram of an array fan air supply device according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic exploded view of an array fan air supply device according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic flowchart of a control method for an array fan air supply device according to an embodiment of the present invention. Detailed Implementation

[0039] The following reference Figures 1 to 4This invention describes an array fan air supply device and its control method according to embodiments of the present invention. In this description, it should be understood that 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 indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0040] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" 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 expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present 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.

[0043] Figure 1 This is a schematic structural diagram of an array fan air supply device, such as... Figure 1As shown, and with reference Figures 2 to 4 This invention provides an array fan air supply device, which includes an evaporator 200, multiple array fans 100, a return air duct 300, and a valve 400.

[0044] Multiple array fans 100 are arranged in an array and located on one side of the evaporator 200. Each array fan 100 has multiple air supply zones 110. The return air duct 300 is used to transfer the cooling capacity of the excess air from the array fans 100 to the air inlet side of the evaporator 200 to pre-cool the airflow before heat exchange in the evaporator 200. A valve 400 is installed on the return air duct 300.

[0045] During operation, the airflow generated by the array fan 100 enters the evaporator 200, exchanges heat with the evaporator 200, and generates the cooling capacity required by the user.

[0046] When the generated cooling capacity exceeds the user's demand, the valve 400 on the return air duct 300 is opened, and the excess cooling capacity enters the air inlet side of the evaporator 200 through the return air duct 300, and passes through the evaporator 200 again to participate in the heat exchange of the evaporator 200.

[0047] When the generated cooling capacity equals the user's demand, the valve 400 on the return air duct 300 is closed.

[0048] Specifically, the multiple array fans 100 are generally arranged in a ring array or a rectangular array. The number of array fans 100 arranged in a rectangular array is a multiple of four, so that the multiple array fans 100 can be evenly distributed, thereby making the air supply device deliver air evenly.

[0049] Furthermore, the array fan 100 is located on the air inlet side of the evaporator 200 to perform heat exchange on the evaporator 200 and generate the cooling capacity required by the user.

[0050] Furthermore, the return air duct 300 is configured to recover excess cooling energy generated by the array fan 100 and redirect it back to the air inlet side of the evaporator 200, so that the excess cooling energy can again participate in heat exchange through the evaporator 200, thereby improving heat exchange efficiency and saving energy.

[0051] Furthermore, valve 400 is used to close or open return air duct 300.

[0052] In this embodiment, the heat exchanger can be replaced by a condenser. Multiple array fans 100 are arranged on one side of the condenser, and the array fans 100 perform heat exchange with the condenser to generate the required heat. The return pipe is used to guide excess heat to the air inlet side of the condenser, and the excess heat passes through the condenser again, thereby improving the heat exchange efficiency of the cooler.

[0053] In some embodiments of the present invention, such as Figure 1 As shown, the return air duct 300 connects the air inlet side and the air outlet side of the evaporator 200, and the outlet of the return air duct 300 is located on the air inlet side of the evaporator 200.

[0054] Specifically, the return air duct 300 blows the airflow generated by the excess cooling capacity of the array fan 100 toward the air before it passes through the evaporator 200 for heat exchange, thereby reducing the temperature of the airflow before it enters the evaporator 200 and thus improving the heat exchange efficiency of the evaporator 200.

[0055] In some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the air outlet of the return air duct 300 is connected to the outside, and the return air duct 300 has a heat conduction device 500 inside. The air inlet side of the evaporator 200 is provided with a heat exchange device 510. The heat conduction device 500 is connected to the heat exchange device 510, and the heat exchange device 510 is used for heat exchange of airflow.

[0056] Specifically, excess cooling energy within the return air duct 300 flows through the heat conduction device 500, which then directs the cooling energy into the heat exchange device 510. The cooling energy in the heat exchange device 510 then participates in the heat exchange of the evaporator 200, thereby improving heat exchange efficiency. Furthermore, the heat conduction device 500 removes the cooling energy from the return air duct 300, causing the airflow temperature within the return air duct 300 to rise and form exhaust gas. The outlet of the return air duct 300 is connected to the outside, allowing the exhaust gas to be discharged outdoors.

[0057] In some embodiments of the present invention, the outlet of the return air duct 300 is connected to the toilet. Specifically, the arrangement of connecting the outlet of the return air duct 300 to the toilet allows the exhaust gas from the return air duct 300 to enter the toilet, and the exhaust gas compresses the original gas in the toilet, thereby exchanging the air in the toilet and achieving the effect of purifying the toilet air.

[0058] The control method for any of the above-mentioned array fan air supply devices, such as Figure 2 and Figure 4 As shown, the control method for the array fan air supply device includes:

[0059] Obtain the target air volume of array fan 100;

[0060] Based on the target air supply volume, determine the number of fans 111 that need to be turned on in each air supply zone 110 and the rated air volume of each fan 111;

[0061] Determine the actual air volume of the array fan 100 based on the number of fans 111 that need to be turned on and their rated air volume in the air supply area 110.

[0062] When the actual air supply volume is greater than the target air supply volume, valve 400 is opened, and the degree of opening of valve 400 is positively correlated with the difference between the actual air supply volume and the target air supply volume.

[0063] When the actual air supply volume equals the target air supply volume, valve 400 is closed.

[0064] Specifically, the rated air volume of fan 111 is the air volume delivered by fan 111 under rated voltage. The target air volume of array fan 100 is set according to the cooling capacity required by the user, and the user's cooling capacity requirement is positively correlated with the target air volume.

[0065] Furthermore, the number of fans 111 that need to be turned on in each air supply area 110 and the rated air volume of each fan 111 are calculated by using the target air supply volume and the number of air supply areas 110.

[0066] Furthermore, when the actual air supply volume exceeds the target air supply volume, the array fan 100 generates excess cooling capacity, the valve 400 opens, and the return air duct 300 delivers the excess cooling capacity back to the air inlet side of the evaporator 200. The greater the difference between the actual air supply volume and the target air supply volume, the more excess cooling capacity the array fan 100 generates, thus requiring the valve 400 to increase its opening to divert the cooling capacity.

[0067] In some embodiments of the present invention, such as Figure 2 and Figure 4 As shown, after determining the number of fans 111 to be turned on and the air volume to be supplied based on the air supply area 110, the following is also included:

[0068] At preset intervals, the operating status of one on fan 111 and one off fan 111 in the air supply area 110 is switched.

[0069] Specifically, by setting the alternating working states of the fans 111 in each air supply zone 110 that are turned on and off, the fans 111 in the on state are switched to the off state after switching, and the fans 111 in the off state are switched to the working state after switching. This can prevent the fans 111 in the working state from being in the working state for a long time, thereby preventing the fans 111 from being overloaded and damaged, and thus increasing the service life of the fans 111.

[0070] In this embodiment, the fans 111 in all air supply areas 110 need to be switched simultaneously and in the same order to prevent uneven airflow from the array fans 100 due to inconsistent order and timing.

[0071] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, determining the number of fans 111 that need to be turned on in each air supply zone 110 and the air supply volume of each air supply zone 110 includes:

[0072] Based on the target air supply volume, the same number of fans 111 in the air supply area 110, and the air volume of each fan 111 not less than 80% of the rated air volume, the number of fans 111 in each air supply area 110 and the air supply volume of each fan 111 are determined.

[0073] Specifically, "the same number of fans 111 within each air supply zone 110" means that the same number of fans 111 are activated within each air supply zone 110. Furthermore, when the airflow of a fan 111 is less than 80% of its rated airflow, the fan 111 operates at low power. Prolonged low-power operation of the fan 111 increases energy consumption, affects its lifespan, and increases the risk of electrical accidents. Therefore, the airflow of the fan 111 must be at least 80% of its rated airflow.

[0074] In some embodiments of the present invention, such as Figure 2 and Figure 4 As shown, determining the number of fans 111 that need to be turned on in each air supply zone 110 includes:

[0075] Based on the target air volume and the rated air volume of fan 111, determine the number of fans 111 that need to be turned on, and record it as the first number;

[0076] Based on the first quantity and the number of air supply zones 110, determine the number of fans 111 that need to be turned on in each air supply zone 110, and record it as the second quantity;

[0077] When the second quantity is ≥1

[0078] The second quantity is an integer, and the number of fans 111 actually turned on in each air supply zone 110 is determined to be the second quantity, and each fan 111 is determined to work according to the rated air volume.

[0079] When the second quantity has a decimal part, and the decimal part is greater than or equal to 0.3, the number of fans 111 actually turned on in each air supply zone 110 is the integer part of the second quantity + 1.

[0080] When the second quantity has a decimal part, and the decimal part is less than 0.3, the number of fans 111 actually turned on in each air supply zone 110 is the integer part of the second quantity.

[0081] Specifically, for example, when the second quantity is 4, the number of fans 111 actually turned on in each air supply zone 110 is 4; for example, when the second quantity is 4.3, the number of fans 111 actually turned on in each air supply zone 110 is 4+1=5; for example, when the second quantity is 4.3, the number of fans 111 actually turned on in each air supply zone 110 is 4+1=5; for example, when the second quantity is 4.2, the number of fans 111 actually turned on in each air supply zone 110 is 4.

[0082] In some embodiments of the present invention, such as Figure 2 and Figure 4 As shown, when the decimal part is greater than or equal to 0.3, it includes:

[0083] When the decimal part is between 0.3 and 0.5, the fan 111 shall be operated at at least 80% of its rated air volume;

[0084] When the decimal part is between 0.5 and 0.8, the fan 111 should be operated at at least 90% of its rated air volume;

[0085] When the decimal part is greater than 0.8, the fan 111 shall be operated at at least 100% of its rated air volume.

[0086] Specifically, when the decimal part of the second quantity is between 0.3 and 0.5, the actual air volume delivered by the array fan 100 is greater than or equal to the target air volume when the fan 111 operates at 80% of its rated air volume.

[0087] When the decimal part of the second quantity is between 0.5 and 0.8, the actual air volume delivered by the array fan 100 is greater than or equal to the target air volume when the fan 111 operates at 90% of its rated air volume.

[0088] When the decimal part of the second quantity is greater than 0.8, the actual air volume delivered by the array fan 100 will be slightly greater than the target air volume when the fan 111 operates at 100% of its rated air volume.

[0089] In other words, when the second quantity has a decimal part, the air volume of the fan 111 is adjusted according to the decimal part, thereby increasing the adaptability of the array fan 100.

[0090] Furthermore, the actual air supply volume equals the actual air supply volume of fan 111 multiplied by the actual number of fans 111 actually turned on. The opening and closing degree of valve 400 is adjusted according to the adjusted actual air output volume. For example, when the second quantity is 4.8, the actual number of fans 110 turned on in the air supply area 110 is 5, and the rated air volume of fans 111 is 100% operating. That is to say, there is an additional air output volume of 0.2 fans 111, so the actual air supply volume is greater than the target air output volume.

[0091] In some embodiments of the present invention, such as Figure 2 and Figure 4 As shown, when the decimal part is less than 0.3, it includes:

[0092] At most, the fan 111 should be operated at 110% of its rated air volume. Specifically, when the decimal part of the second quantity is less than 0.3, the fan 111's rated air volume is generally operated between 100% and 110%, which will ensure that the actual air delivery volume of the array fan 100 is slightly greater than or equal to the target air delivery volume. Further, the actual air delivery volume equals the actual air delivery volume of the fan 111 multiplied by the actual number of fans 111 actually turned on. The opening and closing degree of the valve 400 is adjusted according to the adjusted actual air delivery volume. At most, the fan 111 should be operated at 110% of its rated air volume to prevent the fan 111 from being overloaded.

[0093] Furthermore, if the fan 111 operates at 110% of its rated air volume, resulting in an actual air volume less than the target air volume, then the number of fans 111 turned on in each air supply zone 110 is determined to be the integer part of the second number + 1, and counted as the actual number. This ensures that the fans 111 operate at 80% of their rated air volume, thereby guaranteeing that the total output air volume is at least equal to the target air volume, and controlling the opening and closing degree of the valve 400.

[0094] In some embodiments of the present invention, the control method for the array fan air supply device further includes:

[0095] Determine whether there is a faulty fan 111 in each air supply zone 110, and the number of faulty fans 111 and the number of normal fans 111;

[0096] When the number of normal fans 111 is greater than the number of active fans 111, the faulty fans 111 are always shut down, so that the remaining fans 111 in the air supply area 110 alternate between working and stopping, thereby avoiding the faulty fans 111 from switching working states with the active fans 111, and thus avoiding affecting the actual air supply volume of the array fans 100.

[0097] In some embodiments of the present invention, when the number of normal fans 111 is less than the number of active fans 111, the difference n between the active fans 111 and the normal fans 111 is determined, so that the power of the active fans 111 in the nearest n air supply areas 110 adjacent to the faulty fan 111 is increased accordingly, and the power of the fans 111 in the air supply area 110 is increased, thereby compensating for the air volume of the n non-startable fans 111, thereby avoiding affecting the actual air supply volume of the array fans 100.

[0098] Specifically, by using the fans 111 in the air supply area 110 adjacent to the faulty fan 111 for air volume compensation, the array fans 100 can maintain a uniform airflow.

[0099] In this embodiment, when the number of normal fans 111 is less than the number of active fans 111, a difference number n is determined, such that the number of active fans 111 in the n nearest air supply areas 110 adjacent to the faulty fan 111 is increased by 1, and all fans 111 in the air supply areas 110 where the active fans 111 are increased alternately working and stopping.

[0100] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An array fan air delivery device, characterized by, include: Evaporator; Multiple array fans are arranged in an array and located on the air outlet side of the evaporator. Each array fan has multiple air supply zones. The return air duct is connected to the air outlet side of the array fan. The return air duct is used to transfer the cold / heat of the excess air from the array fan to the air inlet side of the evaporator, so as to pre-cool / preheat the airflow before heat exchange in the evaporator. A valve is installed on the return air duct; when the actual air volume of the array fan is greater than the target air volume, the valve is opened, and the degree of valve opening is positively correlated with the difference between the actual air volume and the target air volume; when the actual air volume of the array fan is equal to the target air volume, the valve is closed.

2. The array fan air supply device according to claim 1, characterized in that, The return air duct connects the air inlet side and the air outlet side of the evaporator, and the outlet of the return air duct is located on the air inlet side of the evaporator.

3. The array fan air supply device according to claim 1, characterized in that, The outlet of the return air duct is located outdoors, and the return air duct has a heat-conducting device inside; the air inlet side of the evaporator is provided with a heat exchange device; the heat-conducting device is connected to the heat exchange device, and the heat exchange device is used for heat exchange of airflow.

4. The array fan air supply device according to claim 3, characterized in that, The outlet of the return air duct is connected to the toilet.

5. A control method for an array fan air supply device as claimed in any one of the claims 1-4, for which it is characteristic that include: Obtain the target air volume of the array fan; Based on the target air supply volume, determine the number of fans that need to be turned on in each air supply area and the rated air volume of each fan; The actual air volume of the array fan is determined based on the number of fans that need to be turned on in the air supply area and the rated air volume. When the actual air volume is greater than the target air volume, the valve is opened, and the degree of valve opening is positively correlated with the difference between the actual air volume and the target air volume. When the actual air supply volume equals the target air supply volume, the valve is closed.

6. The control method for the array fan air supply device according to claim 5, characterized in that, After determining the actual air supply volume of the array fans based on the number of fans to be turned on and the rated air volume of the air supply area, the method further includes: At preset time intervals, the system controls the switching of the operating state of one of the fans in the air supply area to one of the fans that is turned on and one that is turned off.

7. The control method for the array fan air supply device according to claim 5, characterized in that, Determining the number of fans to be turned on and the actual air volume of the array fans for each air supply zone includes: Based on the target air supply volume, the same number of fans in the air supply area, and the air volume of each fan not less than 80% of the rated air volume, the number of fans in each air supply area and the actual air supply volume of each fan are determined.

8. The control method for the array fan air supply device according to claim 7, characterized in that, Determining the number of fans that need to be turned on in each of the air supply zones includes: Based on the target air volume and the rated air volume of the fan, determine the number of fans that need to be turned on, and record it as the first number; Based on the first quantity and the number of air supply areas, determine the number of fans that need to be turned on in each air supply area, and record it as the second quantity; When the second quantity is ≥1 The second quantity is an integer, and the number of fans actually turned on in each air supply area is determined to be the second quantity, and each fan is determined to operate according to the rated air volume; When the second quantity has a decimal part, and the decimal part is greater than or equal to 0.3, the number of fans actually turned on in each of the air supply areas is the integer part of the second quantity + 1; When the second quantity has a decimal part, and the decimal part is less than 0.3, the number of fans actually turned on in each of the air supply areas is the integer part of the second quantity.

9. The control method for the array fan air supply device according to claim 8, characterized in that, When the decimal part is greater than or equal to 0.3, it includes: When the decimal part is between 0.3 and 0.5, the fan shall be operated at at least 80% of its rated air volume; When the decimal part is between 0.5 and 0.8, the fan shall be operated at at least 90% of its rated air volume; When the decimal part is greater than 0.8, the fan is operated at 100% of its rated air volume.

10. The control method for the array fan air supply device according to claim 8, characterized in that, When the decimal part is less than 0.3, it includes: The fan may be operated at up to 110% of its rated air volume.

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