Air volume control method, fume hood and computer storage medium

Abstract

Disclosed in the present invention are an air volume control method, a fume hood and a computer storage medium. The air volume control method comprises: determining that an air volume control system is in a first working mode; acquiring an air exhaust volume of an air exhaust valve; determining a calculated air supplement value corresponding to the current air exhaust volume; comparing the calculated air supplement value with an air supplement reference value; if the calculated air supplement value is greater than or equal to the air supplement reference value, an air supplement valve supplementing air on the basis of the air supplement reference value; if the calculated air supplement value is less than the air supplement reference value, the air supplement valve supplementing air on the basis of the calculated air supplement value; acquiring a first air supplement volume of the air supplement valve; determining a first calculated air exhaust value corresponding to the current first air supplement volume; comparing the first calculated air exhaust value with an air exhaust reference value; if the first calculated air exhaust value is greater than the air exhaust reference value, the air exhaust valve exhausting air on the basis of the first calculated air exhaust value; and if the first calculated air exhaust value is less than or equal to the air exhaust reference value, the air exhaust valve exhausting air on the basis of the air exhaust reference value. According to the present invention, the air exhaust valve and the air supplement valve can be used in coordination with each other, so as to implement variable air volume control on the air exhaust valve and the air supplement valve of the air volume control system, thereby achieving the purposes of energy saving and safety.

Description

Air volume control method, exhaust cabinet and computer storage medium

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on October 12, 2023, with application number 202311323599.8 and application name “A method for controlling air volume, exhaust cabinet and computer storage medium”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the technical field of fume hood air volume control, and in particular to an air volume control method, a fume hood and a computer storage medium. Background Art

[0003] Ventilation equipment can generally be described as equipment that removes waste gas, harmful gas, particulate matter and other gases in a work space to the outside of the work space (usually outdoors). This type of equipment is widely used in industry and life. For example, factories that produce toxic, harmful or particulate gases in industrial production, biological and chemical laboratories in research and development institutions, kitchens that produce fumes when cooking, etc., all require ventilation equipment to isolate the toxic gases and particulate matter in a certain work space from the users, prevent the users from inhaling toxic and harmful gases and particulate matter, and discharge the toxic and harmful gases and particulate matter to the outdoors.

[0004] The fume hood is an important piece of equipment for controlling pollutants in the laboratory. Its function is to control the pollutants emitted from the cabinet and to discharge them smoothly to the outside, so that they will not escape into the room through the operation port of the fume hood and endanger the health and safety of the laboratory personnel.

[0005] Fume hoods are the most energy-intensive equipment in laboratories. To reduce energy consumption, variable air volume control (VAVC) was introduced, allowing windows at different heights to have different exhaust volumes. To reduce the amount of air drawn from the room, outdoor air supply technology was invented.

[0006] However, when variable air volume control is implemented on the basis of outdoor air supply, it is easy for pollutants to leak out due to the lack of synchronization between the exhaust and supply actions of the exhaust hood, affecting the personal safety of the experimental personnel. Therefore, how to achieve energy saving while ensuring the safety of the experimental personnel in the variable air volume supply air exhaust hood is an urgent problem that needs to be solved.

[0007] Summary of the Invention

[0008] The present invention aims to address the problem of turbulent airflow, contaminant leakage, and hazards to laboratory personnel caused by asynchronous exhaust and supply air behavior in variable air volume (VAV) fume hoods. The present invention provides an air volume control method, fume hood, and computer storage medium that can link exhaust and supply air valves to achieve variable air volume control of the exhaust and supply air valves used in an air volume control system for a fume hood, achieving both energy conservation and safety.

[0009] To solve the above technical problems, an embodiment of the present invention discloses an air volume control method, which is applied to an air volume control system, the air volume control system including an exhaust valve and a supply air valve; the air volume control method includes: determining that the air volume control system is in a first working mode; obtaining the exhaust air volume of the exhaust valve; determining a calculated supply air value corresponding to the current exhaust air volume; comparing the calculated supply air value with a supply air reference value; if the calculated supply air value is greater than or equal to the supply air reference value, the supply air valve supplies air at the supply air reference value; if the calculated supply air value is less than the supply air reference value, the supply air valve supplies air at the calculated supply air value; obtaining a first supply air volume of the supply air valve; determining a first calculated exhaust air value corresponding to the current first supply air volume; comparing the first calculated exhaust air value with the exhaust reference value; if the first calculated exhaust air value is greater than the exhaust reference value, the exhaust valve exhausts air at the first calculated exhaust value; if the first calculated exhaust value is less than or equal to the exhaust reference value, the exhaust valve exhausts air at the exhaust reference value.

[0010] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, which determines that the air volume control system is in a second working mode; obtains the second supply air volume of the supply air valve; determines the second calculated exhaust value corresponding to the current second supply air volume; compares the second calculated exhaust value with the exhaust reference value; if the second calculated exhaust value is greater than the exhaust reference value, the exhaust valve exhausts air at the second calculated exhaust value; if the second calculated exhaust value is less than or equal to the exhaust reference value, the exhaust valve exhausts air at the exhaust reference value; the supply air valve is in a closed state.

[0011] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, wherein the air volume control system is applied to an exhaust cabinet, the exhaust cabinet includes a window, and the comparison of the first calculated exhaust value with the exhaust reference value includes: determining the theoretical surface wind speed of the air volume control system; the first calculated exhaust value is V 计1 , V 计1 =V 补1 ÷C÷K 补 , where V 补1 Indicates the first air supply volume of the current air supply valve, C indicates the air supply ratio, K 补 Indicates the percentage of air supply correction; the exhaust reference value is V 排参 , V排参 =(V 面 ×K 面 )×W×H+M 排 , where V 面 Indicates the theoretical surface wind speed set by the air volume control system, K 面 Indicates the face wind speed correction percentage, W indicates the width of the window, H indicates the height of the window opening, M 排 Indicates the exhaust correction value.

[0012] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, wherein the comparing the second calculated exhaust value with the exhaust reference value comprises: determining the idle air volume setting value of the air volume control system; the second calculated exhaust value is V 计2 , V 计2 =V 补2 ÷C÷K 补 , where V 补2 Indicates the second air supply volume of the current air supply valve, C indicates the air supply ratio, K 补 Indicates the percentage of air supply correction; the exhaust reference value is V 排参 , V 排参 =V 空 +M 排 , where V 空 represents the idle air volume setting value set by the air volume control system, M 排 Indicates the exhaust correction value.

[0013] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, wherein the calculated air supply value is compared with the air supply reference value, comprising: determining the theoretical surface wind speed of the air volume control system; the calculated air supply value is V 计3 , V 计3 =V 排 ×C×K 补 , where V 排 Indicates the exhaust volume of the current exhaust valve, C indicates the air supply ratio, K 补 Indicates the percentage of air supply correction; the reference value of air supply is V 补参 , V 补参 =V 排参 ×C×K 补 , where V 排参 Indicates the exhaust reference value of the exhaust valve.

[0014] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, the air volume control system is used to be applied to the exhaust cabinet, and determining that the air volume control system is in the first working mode includes: detecting a first switching signal, the air volume control system switches from the second working mode to the first working mode, so as to switch the exhaust cabinet from the second working mode to the first working mode.

[0015] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, the air volume control system is used to be applied to the exhaust cabinet, and determining that the air volume control system is in the second working mode includes: detecting a second switching signal, the air volume control system switches from the first working mode to the second working mode, so as to switch the exhaust cabinet from the first working mode to the second working mode.

[0016] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, wherein detecting the first switching signal includes: acquiring the first switching signal input by a staff through an input terminal.

[0017] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method, wherein detecting the second switching signal includes: obtaining the second switching signal input by a staff through an input terminal.

[0018] According to another specific embodiment of the present invention, an embodiment of the present invention discloses a method for controlling air volume, wherein the input end is a touch screen, the touch screen has a first touch area and a second touch area, activating the first touch area is used to output a first switching signal, and activating the second touch area is used to output a second switching signal.

[0019] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an air volume control method. When the exhaust cabinet is in the second working mode, the height of the window opening of the exhaust cabinet is a set distance, and the set distance is H, and H is less than or equal to 300 mm.

[0020] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an exhaust cabinet, including an air volume control system, the air volume control system includes an exhaust valve and an air supply valve, and the air volume control system is connected to the exhaust valve and the air supply valve respectively; wherein, the air volume control system is used to execute the air volume control method described in any of the above embodiments.

[0021] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an exhaust cabinet, and the exhaust valve is a pressure-independent air valve.

[0022] According to another specific embodiment of the present invention, an embodiment of the present invention discloses an exhaust cabinet, and the exhaust valve is a pressure-independent air valve.

[0023] An embodiment of the present invention further discloses a computer storage medium, comprising a memory and a processor, wherein the memory is adapted to store computer instructions, and the processor is adapted to execute the air volume control method described in any of the above embodiments when running the computer instructions.

[0024] As described above, the present invention provides an air volume control method, including: determining the working mode of the air volume control system; obtaining the supply air volume of the supply air valve; and determining the calculated exhaust air value corresponding to the current supply air volume. Since it is necessary to ensure that the supply air volume of the supply air valve of the air volume control system (for example, supplying air to the exhaust cabinet) is always less than the exhaust air volume of the exhaust valve (for example, exhausting air from the exhaust cabinet to the outside), it is necessary to set the larger of the two values ​​as the exhaust air volume of the exhaust valve. That is, the calculated exhaust air value is compared with the exhaust reference value: if the calculated exhaust air value is greater than the exhaust reference value, the exhaust valve exhausts air at the calculated exhaust air value; if the calculated exhaust air value is less than or equal to the exhaust reference value, the exhaust valve exhausts air at the exhaust reference value; and determining the calculated supply air value corresponding to the current exhaust air volume. When the air volume control system is used in an exhaust cabinet, since it is necessary to ensure that the supply air volume in the exhaust cabinet is always less than the exhaust air volume, it is necessary to set the smaller of the two values ​​as the supply air volume of the supply air valve. That is, the calculated supply air value is compared with the supply air reference value: if the calculated supply air value is greater than or equal to the supply air reference value, the supply air valve supplies air at the supply air reference value; if the calculated supply air value is less than the supply air reference value, the supply air valve supplies air at the calculated supply air value.

[0025] By adopting the above technical solution, the air volume control method of the present application can link the exhaust valve and the supply air valve. When the air volume control system is used in the exhaust cabinet, the energy consumption of the exhaust cabinet is reduced and the use cost of the exhaust cabinet is saved through variable air volume control. It solves the problem that the method of controlling the air volume of the exhaust cabinet in the existing technology makes the exhaust cabinet have high energy consumption and the problem of turbulent air flow organization caused by the asynchronous exhaust and supply air behaviors, thereby achieving the purpose of energy saving and safety.

[0026] In order to make the above contents of the present invention more clearly understood, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 shows a flow chart 1 of an air volume control method according to an embodiment of the present invention;

[0028] FIG2 shows a second flow chart of the air volume control method according to an embodiment of the present invention;

[0029] FIG3 a shows a front view of a fume hood according to an embodiment of the present invention;

[0030] FIG3 b shows a cross-sectional schematic diagram of an exhaust cabinet according to an embodiment of the present invention;

[0031] FIG4 shows a third flow chart of the air volume control method according to an embodiment of the present invention;

[0032] FIG5 shows a fourth flow chart of the air volume control method according to an embodiment of the present invention;

[0033] FIG6 shows a structural block diagram of an air volume control device according to an embodiment of the present invention;

[0034] FIG7 shows a structural block diagram of an air volume control device according to an embodiment of the present invention;

[0035] FIG8 is a schematic diagram showing the three-dimensional structure of the fume hood according to an embodiment of the present invention;

[0036] FIG9 shows a block diagram of an electronic device provided by an embodiment of the present invention;

[0037] FIG10 shows a block diagram of a system on chip (SoC) provided in an embodiment of the present invention;

[0038] FIG11 shows a schematic structural diagram of a touch screen according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0040] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0042] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0043] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0044] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0045] Referring to Figures 1 to 11, the present invention provides an air volume control method, which can be applied to an air volume control system. The air volume control system includes an exhaust valve and an air supply valve. The air volume control system is used to be applied to ventilation equipment, such as an exhaust cabinet, but is not limited to this. The embodiments of the present application do not impose specific restrictions on the type of ventilation equipment. For example, it can also be a ventilation room, etc.

[0046] For ease of understanding, the following embodiments of the present application are described using an air volume control system applied to an exhaust cabinet as an example, wherein the air volume control system is used to execute the air volume control method provided in the embodiments of the present application.

[0047] The method flow chart of the air volume control method provided in the embodiment of the present application is shown in FIG1 . According to the preset configuration, when the air volume control system is in the second working mode (i.e., the exhaust cabinet is in the second working mode), the specific air volume control method includes:

[0048] Step S1: Determine whether the air volume control system is in the second operating mode.

[0049] For example, if the determination unit 12 (as shown in FIG. 7 , for example, a variable air volume controller of the air volume control system) determines that the operating mode of the air volume control system is the second operating mode, then the fume hood is in the second operating mode. For example, the operating modes of the fume hood of the present application also include the second operating mode and the first operating mode.

[0050] It should be noted that the working mode of the air volume control system in the embodiment of the present application is the same as the working mode of the exhaust hood, that is, when the air volume control system is in the first working mode, the exhaust hood is in the first working mode; when the air volume control system is in the second working mode, the exhaust hood is in the second working mode; when the working mode of the air volume control system is switched, the working mode of the exhaust hood is also switched accordingly, for example, when the air volume control system is switched from the first working mode to the second working mode, the exhaust hood is switched from the first working mode to the second working mode.

[0051] For example, in this embodiment, the second working mode and the first working mode can be set according to actual needs, for example, they can be a night mode (second working mode) and a normal operating mode (first working mode). For example, referring to Figure 8 and in combination with Figures 3a and 3b, when the fume hood is in night mode, the opening height of the window 70 of the fume hood (as shown in Figure 3a) is a set distance H, that is, the distance between the bottom end of the window 70 and the front bottom side of the working chamber S. The embodiment of the present application does not impose any specific restrictions on the size of the set distance H, and it can be set according to actual conditions. For example, in this embodiment, when the fume hood is in the second working mode, the set distance H is less than or equal to 300 mm.

[0052] In some possible implementations, for example, when a worker is away from the fume hood, that is, when the fume hood is in an unattended state, the fume hood can be set to night mode. When the fume hood is in night mode, it is determined that the fume hood is in the second working mode, that is, the air volume control system is in the second working mode, the air supply valve of the air volume control system is in the closed state, and the exhaust volume of the exhaust valve is the exhaust reference value V in the idle state. 排参 , V 排参 =V 空 +M 排 , where V 空 is the idle air volume setting value, M 排 is the exhaust correction value.

[0053] In some possible implementations, for example, when a worker is operating the fume hood, the fume hood may be set to a normal operating mode. When the fume hood is in the normal operating mode, it is determined that the fume hood is in the first operating mode, that is, the air volume control system is in the first operating mode, and both the exhaust valve and the supply air valve of the air volume control system are in an operating state.

[0054] Step S2: Obtain the second air supply volume V of the air supply valve 补2 .

[0055] A flow detection device (i.e., detection unit 13, described later, as shown in FIG7 ) can be used to detect the flow of gas entering the air supply device. In this embodiment, the flow detection device is positioned upstream of or within the valve body of the air supply valve to detect the supply air volume of the air supply valve. For example, the flow detection device can be a Venturi flowmeter, a Pitot tube flowmeter, an orifice flowmeter, an impeller flowmeter, or a Venturi valve. It should be noted that this application does not limit the method for detecting the supply air volume.

[0056] Step S3: Determine the current second air supply volume V 补2 The corresponding second calculated exhaust value V 计2 .

[0057] The second supplementary air volume V obtained in step S2 补2 To determine the current second air supply volume V 补2 The corresponding second calculated exhaust value V 计2 .

[0058] In some possible implementations, the second calculated exhaust value V 计2 =V 补2 ÷C÷K 补 , where V 补2 represents the second supply air volume of the current supply air valve, that is, the supply air volume currently measured by the detection unit 13 (as shown in FIG7 ) from the supply air valve. C represents the supply air ratio, that is, the corresponding ratio of the supply air volume to the exhaust air volume. K 补 Indicates the supplementary air correction percentage. Theoretically, it is composed of the supplementary air ratio C and the second supplementary air volume V. 补2 The current second air supply volume V can be calculated 补2 The corresponding second calculated exhaust value V 计2 However, it is inevitable that when the air volume control system is applied to the exhaust cabinet, factors such as the opening and closing of the exhaust cabinet window 70 (as shown in Figure 8) will cause a deviation between the theoretical value and the actual value. Therefore, in this embodiment, the air supply correction percentage K is used. 补 For the second calculated exhaust value V 计2 Correction is performed so that the second calculated exhaust value V 计2 Closer to the actual value.

[0059] Step S4: The second calculated exhaust value V 计2 and exhaust reference value V 排参 Compare; if the second calculated exhaust value V 计2 Greater than the exhaust reference value V 排参 , the exhaust valve calculates the exhaust value V 计2 Exhaust, if the second calculated exhaust value V 计2 Less than or equal to the exhaust reference value V 排参 , the exhaust valve is based on the exhaust reference value V 排参 Exhaust.

[0060] Determine the current surface wind speed V according to the theoretical surface wind speed set by the air volume control system 面 Corresponding exhaust reference value V 排参 , and, according to the second calculated exhaust value V obtained in step S3 计2 Compared with the exhaust reference value V determined above 排参 Make a comparison.

[0061] In some possible implementations, the exhaust reference value V 排参 =V 空 +M 排 , where V 空 It is the idle air volume setting value set by the air volume control system. When the air volume control system is applied to the exhaust cabinet, the idle air volume setting value V of the exhaust cabinet is 空 = Fume hood cavity volume × air exchange times, M 排 is the exhaust correction value.

[0062] It should be noted that according to ANSI / AIHA z9.5-2012, the minimum air exchange rate in the fume hood is 150 times / hour. For example, assuming the inner volume of the fume hood is 1.5m 3 , the ventilation frequency is 220 times / hour, then the idle air volume setting value V 空 =1.5×220=330cmh.

[0063] In other words, when the fume hood in the embodiment of the present application is in working mode (i.e., the first working mode or the second working mode), the exhaust valve is in the exhaust state (i.e., the exhaust reference value is greater than 0), and the supply air valve is in the supply air or closed state.

[0064] The second calculated exhaust value V obtained in step S3 计2 And the calculated exhaust reference value V 排参 , the comparison unit 15 (as shown in FIG7 ) compares the two values. If the second calculated exhaust value V 计2 Greater than the exhaust reference value V 排参 , that is, the second supply air volume V measured at the current supply air valve 补2 The corresponding second calculated exhaust value V 计2 , greater than the current wind speed V 面 The calculated corresponding exhaust reference value V 排参 When the air volume control system is used in an exhaust cabinet, it is necessary to ensure that the supply air volume in the exhaust cabinet is always smaller than the exhaust air volume, so the larger value of the two needs to be set as the exhaust volume of the exhaust valve. That is, if the second calculated exhaust value V 计2 Greater than the exhaust reference value V 排参 , then the exhaust valve will calculate the exhaust value V 计2The value of is used as the exhaust volume value for exhaust.

[0065] If the second calculated exhaust value V 计2 Less than exhaust reference value V 排参 , that is, the second supply air volume V measured at the current supply air valve 补2 The corresponding second calculated exhaust value V 计2 , less than the current wind speed V 面 The calculated corresponding exhaust reference value V 排参 When the air volume control system is used in an exhaust cabinet, it is necessary to ensure that the supply air volume in the exhaust cabinet is always smaller than the exhaust air volume, so the larger value of the two needs to be set as the exhaust volume of the exhaust valve. That is, if the second calculated exhaust value V 计2 Less than exhaust reference value V 排参 , the exhaust valve will be at the exhaust reference value V 排参 The value of is used as the exhaust volume value for exhaust.

[0066] Step S5: The air supply valve is in a closed state.

[0067] When the fume hood is in the second working mode, that is, the air volume control system is in the second working mode, the air supply valve of the air volume control system is set to be in the closed state, that is, the supply air volume is 0. For example, when the supply air volume is 0, the current second supply air volume V obtained in step S2 is 补2 =0, the second calculated exhaust value V obtained in step S3 计2 When the air volume control system is used in the exhaust cabinet, it is necessary to ensure that the supply air volume in the exhaust cabinet is always less than the exhaust air volume, and the second supply air volume V 补2 Less than exhaust reference value V 排参 .

[0068] Therefore, when the fume hood is in the second working mode, the air supply volume of the air supply valve of the air volume control system is 0, and the exhaust volume of the exhaust valve is the exhaust reference value V 排参 For example, when the fume hood is in the second working mode, the exhaust reference value V 排 参 It is the idle air volume setting value, which can be set by the control unit 11 (as shown in FIG7 ).

[0069] 2 , the air volume control method according to the preset air volume control system when it is in the first working mode includes:

[0070] Step S6: Determine whether the air volume control system is in the first operating mode.

[0071] The determination unit 12 (as shown in FIG7 ) determines that the operating mode of the air volume control system is the first operating mode, i.e., the fume hood is in the first operating mode. Compared with the second operating mode, in the first operating mode, both the exhaust valve and the supply air valve of the air volume control system are in normal operation.

[0072] Step S7: Obtain the first air supply volume V of the air supply valve 补1 .

[0073] The air supply volume of the air supply valve is detected by the detection unit 13 (as shown in FIG7 ) to determine the first air supply volume V of the current air supply valve. 补1 .

[0074] Step S8: Determine the current first air supply volume V 补1 The corresponding first calculated exhaust value V 计1 .

[0075] According to the first supplementary air volume V obtained in step S7 补1 To determine the first air supply volume V 补1 The corresponding first calculated exhaust value V 计1 .

[0076] In some possible implementations, the first calculated exhaust value V 计1 =V 补1 ÷C÷K 补 , where V 补1 Indicates the first air supply volume of the current air supply valve, C indicates the air supply ratio, K 补 Indicates the supplementary air correction percentage. Theoretically, it is determined by the supplementary air ratio C and the first supplementary air volume V. 补1 The current first air supply volume V can be calculated 补1 The corresponding first calculated exhaust value V 计1 However, it is inevitable that when the air volume control system is applied to the exhaust cabinet, factors such as the opening and closing of the exhaust cabinet window 70 (as shown in Figure 8) will cause a deviation between the theoretical value and the actual value. Therefore, in this embodiment, the air supply correction percentage K is used to adjust the air supply percentage. 补 For the first calculation of exhaust value V 计1 Correction is performed so that the first calculated exhaust value V 计1 Closer to the actual value.

[0077] Step S9: The first calculated exhaust value V 计1 and exhaust reference value V 排参 Compare; if the first calculated exhaust value V 计1 Greater than the exhaust reference value V 排参 , the exhaust valve calculates the exhaust value V 计1 Exhaust; If the first calculated exhaust value V 计1 Less than or equal to the exhaust reference value V 排参, the exhaust valve is based on the exhaust reference value V 排参 Exhaust.

[0078] Determine the current surface wind speed V according to the theoretical surface wind speed set by the air volume control system 面 Corresponding exhaust reference value V 排参 , and, according to the first calculated exhaust value V obtained in step S8 计1 Compared with the exhaust reference value V determined above 排参 Make a comparison.

[0079] In some possible implementations, when the air volume control system is applied to a fume hood, the exhaust reference value V 排参 =(V 面 ×K 面 )×W×H+M 排 , wherein, referring to FIG8, V 面 Indicates the theoretical surface wind speed set by the air volume control system, K 面 represents the surface wind speed correction percentage, W represents the width of the window 70, H represents the opening height of the window 70, that is, the distance between the bottom end of the window 70 and the front bottom side of the working chamber S (as shown in FIG8 ), M 排 Indicates the exhaust correction value.

[0080] The first calculated exhaust value V obtained in step S8 计1 And the calculated exhaust reference value V 排参 , the comparison unit 15 (as shown in FIG7 ) compares the two values. If the first calculated exhaust value V 计1 Greater than the exhaust reference value V 排参 , that is, the first supply air volume V measured at the current supply air valve 补1 The corresponding first calculated exhaust value V 计1 , greater than the current wind speed V 面 The calculated corresponding exhaust reference value V 排参 When the air volume control system is used in an exhaust cabinet, it is necessary to ensure that the supply air volume in the exhaust cabinet is always smaller than the exhaust air volume, so the larger value of the two needs to be set as the exhaust volume of the exhaust valve. That is, if the first calculated exhaust value V 计1 Greater than the exhaust reference value V 排参 , then the exhaust valve will calculate the exhaust value V 计1 The value of is used as the exhaust volume value for exhaust.

[0081] For example, when the fume hood is in the first working mode, if the first calculated exhaust value V 计1 =110, exhaust reference value V 排参 =100, that is, if the first calculated exhaust value V 计1 Greater than the exhaust reference value V 排参, the exhaust valve will be V 计1 =110 is used as the exhaust volume value for exhaust.

[0082] If the first calculated exhaust value V 计1 Less than exhaust reference value V 排参 , that is, the first supply air volume V measured at the current supply air valve 补1 The corresponding first calculated exhaust value V 计1 , less than the current wind speed V 面 The calculated corresponding exhaust reference value V 排参 When the air volume control system is used in an exhaust cabinet, it is necessary to ensure that the supply air volume in the exhaust cabinet is always smaller than the exhaust air volume, so the larger value of the two needs to be set as the exhaust volume of the exhaust valve. That is, if the first calculated exhaust value V 计1 Less than exhaust reference value V 排参 , the exhaust valve will be at the exhaust reference value V 排参 The value of is used as the exhaust volume value for exhaust.

[0083] For example, when the fume hood is in the first working mode, if the first calculated exhaust value V 计1 =100, exhaust reference value V 排参 =110, that is, if the first calculated exhaust value V 计1 Less than exhaust reference value V 排参 , the exhaust valve will be V 排参 =110 is used as the exhaust volume value for exhaust.

[0084] Step S10: Obtain the exhaust volume V of the exhaust valve 排 .

[0085] When the fume hood is in the first working mode, that is, the air volume control system is in the first working mode, the exhaust valve and the air supply valve of the air volume control system are both set to be in normal operation. At this time, the exhaust volume of the exhaust valve is detected by the detection unit 13 (as shown in FIG7 ) to determine the current exhaust volume V of the exhaust valve. 排 .

[0086] In this application, both the exhaust valve and the supply air valve of the air volume control system are pressure-independent air valves. Exemplarily, these pressure-independent air valves may include a Venturi valve, a single-leaf butterfly valve with a differential pressure flowmeter, a multi-leaf butterfly valve with a differential pressure flowmeter, or a multi-leaf butterfly valve with an impeller flowmeter. Differential pressure flowmeters include Venturi flowmeters, Pitot tube flowmeters, and orifice plate flowmeters. Furthermore, pressure-independent air valves can automatically adjust the flow area to accommodate changes in pressure before and after the valve, controlling the air volume flowing through the valve to a preset value within the operating pressure differential range.

[0087] Step S11: Determine the current exhaust volume V 排The corresponding calculated air supply value V 计3 .

[0088] The exhaust volume V obtained in step S10 排 To determine the exhaust volume V 排 The corresponding calculated air supply value V 计3 In some possible implementations, the air supply value V is calculated 计3 =V 排 ×C×K 补 ; Among them, V 排 Indicates the exhaust volume of the current exhaust valve, C indicates the air supply ratio, K 补 Indicates the percentage of air supply correction. Theoretically, it is determined by the air supply ratio C and exhaust volume V. 排 The current exhaust volume V can be calculated 排 The corresponding calculated air supply value V 计3 However, it is inevitable that when the air volume control system is applied to the exhaust cabinet, factors such as the opening and closing of the exhaust cabinet window 70 (as shown in Figure 8) will cause a deviation between the theoretical value and the actual value. Therefore, in this embodiment, the air supply correction percentage K is used. 补 Calculate the air supply value V 计3 Correction is made to calculate the air supply value V 计3 Closer to the actual value.

[0089] Step S12: Calculate the air supply value V 计3 and the air supply reference value V 补参 Compare; if the air supply value V is calculated 计3 Greater than or equal to the air supply reference value V 补参 , the air supply valve is based on the air supply reference value V 补参 Make up air, if you calculate the make up air value V 计3 Less than the air supply reference value V 补参 , the air supply valve is used to calculate the air supply value V 计3 Replenish wind.

[0090] Determine the current surface wind speed V according to the theoretical surface wind speed set by the air volume control system 面 Corresponding exhaust reference value V 排参 , and then the exhaust reference value V 排参 Calculate the air supply reference value V 补参 , and, according to the calculated air supply value V obtained in step S11 计3 Compared with the above determined reference value of air supply V 补参 In some possible implementations, the air supply reference value V 补参 =V 排参 ×C×K 补 , where C represents the air supply ratio, K 补 Indicates the air supply correction percentage, V 排参 Indicates the exhaust reference value of the exhaust valve.

[0091] The calculated supplementary air value V obtained in step S11 计3 And the calculated air supply reference value V 补参 , the comparison unit 15 (as shown in FIG7 ) compares the two values. If the calculated air supply value V 计3 Greater than the air supply reference value V 补参 , that is, the exhaust volume V measured at the current exhaust valve 排 The corresponding calculated air supply value V 计3 , greater than the current wind speed V 面 The corresponding supplementary air reference value V is calculated 补参 When the air volume control system is used in the exhaust cabinet, the supply air volume in the exhaust cabinet needs to be always smaller than the exhaust air volume, so the smaller value of the two needs to be set as the supply air volume of the supply air valve. That is, if the supply air value V is calculated 计3 Less than the air supply reference value V 补参 , then the air supply valve will calculate the air supply value V 计3 The value of is used as the value of the make-up air volume for make-up air.

[0092] For example, when the fume hood is in the first working mode, if the supplementary air value V is calculated 计3 =90, air supply reference value V 补参 =100, that is, if the air supply value V is calculated 计3 Less than the air supply reference value V 补参 , the air supply valve will be V 计3 =90 is used as the value of the supply air volume for supply air.

[0093] If the air supply value V is calculated 计3 Greater than the air supply reference value V 补参 , that is, the exhaust volume V measured at the current exhaust valve 排 The corresponding calculated air supply value V 计3 , less than the current wind speed V 面 The corresponding supplementary air reference value V is calculated 补参 When the air volume control system is used in the exhaust cabinet, the supply air volume in the exhaust cabinet needs to be always smaller than the exhaust air volume, so the smaller value of the two needs to be set as the supply air volume of the supply air valve. That is, if the supply air value V is calculated 计3 Greater than the air supply reference value V 补参 , the air supply valve will be set at the air supply reference value V 补参 The value of is used as the value of the make-up air volume for make-up air.

[0094] For example, when the fume hood is in the first working mode, if the supplementary air value V is calculated 计3 =100, air supply reference value V 补参 =90, that is, if the air supply value V is calculated计3 Greater than the air supply reference value V 补参 , the air supply valve will be V 补参 =90 is used as the value of the supply air volume for supply air.

[0095] 3a and 3b , an embodiment of the present application applies an air volume control system to an exhaust hood to illustrate an air volume control method for setting the exhaust air volume of an exhaust valve and the supply air volume of a supply air valve, performed by the air volume control system when the exhaust hood is in a first working mode.

[0096] First, ensure that the fume hood is in the first working mode, and both the exhaust valve and the supply air valve are set to be in normal operating state;

[0097] According to the opening height H and width W of the window 70, the exhaust reference value V is calculated. 排参 , for example, V 排参 =1000cmh;

[0098] According to the air supply ratio, for example, 60%, the air supply reference value V is calculated. 补参 =600cmh;

[0099] Get the exhaust volume V of the current exhaust valve 排 , for example, V 排 =970cmh, then calculate the supplementary air value V corresponding to the current exhaust volume 计3 =970×60%=582cmh;

[0100] Set the air supply reference value V 补参 And calculate the air supply value V 计3 By comparison, we can know that the calculated air supply value V 计3 If the value is smaller, the air supply valve is controlled to calculate the air supply value V 计3 It should be noted that those skilled in the art will understand that the reading value of the exhaust cabinet's air valve (for example, the value of the air supply valve obtained later) and the set value (for example, the air supply valve to calculate the air supply value V 计3 For example, when the reading of the air valve is within ±5% of the set value, the air valve is considered to have reached the air volume value.

[0101] Next, obtain the current air supply volume of the air supply valve, that is, the first air supply volume V 补1 , for example, V 补1 =610cmh, then the calculated exhaust value corresponding to the current supply air volume is calculated, that is, the first calculated exhaust value V 计1 =610 / 60%=1017cmh;

[0102] Set the exhaust reference value V 排参 With the first calculated exhaust value V计1 By comparison, we can see that the first calculated exhaust value V 计1 The value is larger, then the exhaust valve is controlled to calculate the exhaust value V 计1 Exhaust volume.

[0103] Therefore, through the air volume control method of the embodiment of the present application, the exhaust volume setting of the exhaust valve and the supply air volume setting of the supply air valve are performed at a supply air ratio close to the set 60% (but not exceeding 60%) to perform exhaust and supply air behaviors, which can effectively solve the high energy consumption of the exhaust cabinet and the turbulent air flow organization caused by the asynchronous exhaust and supply air behaviors, thereby achieving the purpose of energy saving and safety.

[0104] In addition, after executing the exhaust air volume setting and supply air volume setting of the air volume control system, it also includes:

[0105] Referring to Figure 4, step S51: Upon detecting a first switching signal, the air volume control system switches from the second operating mode to the first operating mode. Specifically, upon receiving the first switching signal input by a worker via an input terminal, the air volume control system switches from the second operating mode to the first operating mode. Thus, when the air volume control system is used in an exhaust hood, the exhaust hood switches from the second operating mode to the first operating mode.

[0106] Alternatively, referring to FIG. 5 , step S121: upon detecting a second switching signal, the air volume control system switches from the first operating mode to the second operating mode. Specifically, upon receiving the second switching signal input by a worker via the input terminal, the air volume control system switches from the first operating mode to the second operating mode. Thus, when the air volume control system is used in an exhaust hood, the exhaust hood switches from the first operating mode to the second operating mode.

[0107] For example, referring to FIG11 in conjunction with FIG7 , the input terminal is a touch screen 60 having a first touch area 61 and a second touch area 62. When a worker needs to switch the air volume control system from the second operating mode to the first operating mode, the worker activates the first touch area 61 to output a first switching signal. When the first switching signal is fed back to the control unit 11, the control unit 11 controls the air volume control system to switch from the second operating mode to the first operating mode.

[0108] When the staff needs to switch the air volume control system from the first working mode to the second working mode, the second touch area 62 is activated to output the second switching signal. When the second switching signal is fed back to the control unit 11, the control unit 11 controls the air volume control system to switch from the first working mode to the second working mode. For example, continuing to refer to Figure 11 and combining with Figure 3a, in some possible embodiments, the air volume control system is applied to the exhaust cabinet. When the opening height of the window 70 of the exhaust cabinet is within the set distance H, long press the second touch area 62, and the exhaust cabinet enters the night mode (i.e., the second working mode). This application does not impose specific restrictions on the triggering method of the first switching signal and the second switching signal, and can be adjusted according to actual conditions. For example, the set distance H is less than or equal to 300 mm.

[0109] 6 and 7 , the present invention further provides an air volume control device 10 , which includes:

[0110] The control unit 11 is adapted to control the exhaust volume of the exhaust valve, the supply volume of the supply valve, and switch operating modes of the air volume control system. Specifically, the control unit 11 may control the air volume of the exhaust valve and the supply valve via pressure-independent air valves. When the operating mode of the air volume control system needs to be switched, the control unit 11 may receive a command to switch the operating mode and control the air volume control system to switch between a first operating mode and a second operating mode.

[0111] The judgment unit 12 is adapted to determine an operating mode of the air volume control system. The operating modes of the air volume control system include a first operating mode and a second operating mode. For example, with continued reference to FIG11 and in conjunction with FIG3a , in some possible implementations, the air volume control system is applied to a fume hood. When the fume hood is in night mode (i.e., the second operating mode), the distance between the bottom end of the viewing window 70 of the fume hood and the bottom side of the working chamber is a set distance H, and the set distance H is less than or equal to 300 mm.

[0112] The detection unit 13 is adapted to obtain the exhaust volume of the exhaust valve and the supply volume of the supply valve. The method for detecting the exhaust volume and the supply volume is not limited. In this embodiment, the detection unit 13 is a flow detection device.

[0113] The processing unit 14 is adapted to determine a calculated exhaust air value and a calculated supply air value.

[0114] Comparison unit 15 is adapted to compare the calculated exhaust value with the exhaust volume, and to compare the calculated supply air value with the supply air volume. It should be noted that the present embodiment of the present application does not specifically limit the connection method between the control unit 11, the judgment unit 12, the detection unit 13, the processing unit 14, and the comparison unit 15, as long as they can be used to implement control of the air volume control system by the air volume control device 10. For example, they can be electrical connections or communication connections.

[0115] Among them, the control unit 11 is suitable for determining the working mode of the air volume control system, and adjusting the exhaust volume of the current exhaust valve and the supply air volume of the supply air valve according to the exhaust volume of the exhaust valve and the supply air volume of the supply air valve and the comparison result, so that the exhaust volume of the exhaust valve of the air volume control system is not less than the exhaust reference value, and the supply air volume of the supply air valve of the exhaust cabinet is not greater than the supply air reference value.

[0116] Specifically, when the air volume control system is in the second working mode, the control unit 11 is adapted to obtain the second air supply volume V of the current air supply valve in the detection unit 13 after the judgment unit 12 determines that the air volume control system is in the second working mode. 补 2, the control processing unit 14 determines the theoretical surface wind speed of the air volume control system; and according to the second supplementary air volume V 补2 Determine the current second air supply volume V 补2 The corresponding second calculated exhaust value V 计2 ; and, determine the current surface wind speed V according to the theoretical surface wind speed 面 Corresponding exhaust reference value V 排参 .

[0117] Specifically, if the second calculated exhaust value V 计2 Greater than the exhaust reference value V 排参 , the control unit 11 controls the exhaust valve to calculate the second exhaust value V 排参 Exhaust; if the second calculated exhaust value V 计2 Less than or equal to the exhaust reference value V 排参 , the control unit 11 controls the exhaust valve to exhaust reference value V 排参 Exhaust; the control unit 11 controls the air supply valve to be in a closed state.

[0118] When the air volume control system is in the first working mode, the control unit 11 is adapted to obtain the first supply air volume V of the current supply air valve in the detection unit 13 after the judgment unit 12 determines that the air volume control system is in the first working mode. 补1 At the same time, the control processing unit 14 determines the theoretical surface wind speed of the air volume control system. 补1 Determine the current first air supply volume V 补1 The corresponding first calculated exhaust value V 计1 ; and, determining the current surface wind speed V according to the theoretical surface wind speed面 Corresponding exhaust reference value V 排参 .

[0119] Specifically, if the first calculated exhaust value V 计1 Greater than the exhaust reference value V 排参 , the control unit 11 controls the exhaust valve to calculate the first exhaust value V 计1 Exhaust; If the first calculated exhaust value V 计1 Less than or equal to the exhaust reference value V 排参 , the control unit 11 controls the exhaust valve to exhaust reference value V 排参 Exhaust.

[0120] When the air volume control system is in the first working mode, the control unit 11 is adapted to obtain the exhaust volume V of the current exhaust valve in the detection unit 13 after the judgment unit 12 determines that the air volume control system is in the first working mode. 排 At the same time, the control processing unit 14 determines the theoretical surface wind speed of the air volume control system; and determines the current exhaust volume V according to the exhaust volume 排 The corresponding calculated air supply value V 计3 ; and, determining the current surface wind speed V according to the theoretical surface wind speed 面 Corresponding exhaust reference value V 排参 At the same time, determine the current exhaust reference value V 排参 Corresponding air supply reference value V 补参 .

[0121] Specifically, if the supplementary air value V is calculated 计3 Greater than or equal to the air supply reference value V 补参 , the control unit controls the air supply valve to the air supply reference value V 补参 Make up air; if you calculate the make up air value V 计3 Less than the air supply reference value V 补参 , the control unit controls the air supply valve to calculate the air supply value V 计3 Replenish wind.

[0122] 6 and 7 in combination with FIG8 , the air volume control system of the embodiment of the present application includes the air volume control device 10 described in any of the above embodiments.

[0123] In addition, the air volume control device 10 also includes an exhaust main pipe 20, a supply air main pipe 30, a PLC (Programmable Logic Controller) 40, a displacement sensor 50, a touch screen 60, an emergency switch 80, an infrared beamforming module (not shown), and an infrared human body detection module (not shown). An exhaust valve 21 is provided on the exhaust path of the exhaust main pipe 20, and the exhaust volume of the exhaust main pipe 20 can be measured and adjusted by the exhaust valve 21. A supply air valve 31 is provided on the supply air path of the supply air main pipe 30, and the supply air volume of the supply air main pipe 30 can be measured and adjusted by the supply air valve 31.

[0124] It should be noted that the embodiments of the present application do not specifically limit the connection method between the exhaust manifold 20, the supply air manifold 30, the PLC 40, the displacement sensor 50, the touch screen 60, the emergency switch 80, the infrared beam module, and the infrared human detection module in the air volume control device 10 of the air volume control system. Any connection method can be used to achieve exhaust and supply air control in the air volume control system. For example, the connection method can be an electrical connection or a communication connection, such as an electrical connection between the exhaust valve 21 and the air volume control device 10, and a communication connection between the PLC 40 and the air volume control device 10.

[0125] In some possible embodiments, when the air volume control system is applied to a fume hood, with continued reference to Figures 6 and 7 , the exhaust valve 21 is used to detect the current exhaust air value in the fume hood, and the supply air valve 31 is used to detect the current supply air value in the fume hood, and the feedback is sent to the detection unit 13 of the air volume control device 10. The detection unit 13 feeds the current exhaust air value and the supply air value back to the processing unit 14. The processing unit 14 calculates and determines the current calculated exhaust air value and the calculated supply air value, and then feeds the calculation results back to the comparison unit 15. The comparison unit 15 compares the current calculated exhaust air value in the fume hood with a preset exhaust air reference value in the fume hood, and compares the current calculated supply air value in the fume hood with a preset supply air reference value in the fume hood, and feeds the comparison results back to the control unit 11. The control unit 11 adjusts the exhaust air volume of the exhaust valve 21 and the supply air volume of the supply air valve 31 based on the comparison results, thereby achieving variable air volume control of the entire fume hood.

[0126] In addition, in conjunction with Figure 8 , when the air volume control system is applied to a fume hood, a displacement sensor 50 is located on the top of the fume hood to provide information on the door height of the fume hood window 70. A touch screen 60 is located outside the fume hood to collect and display information, as well as to set some parameters, such as the theoretical surface wind speed of the air volume control system and the operating mode of the air volume control system (i.e., the operating mode of the fume hood). An emergency switch 80 is located on the fume hood column. An infrared human body detection module (not shown) is used to provide infrared human body information, and an infrared beam module (not shown) is used to provide information on whether there is a person or object in the middle of the sliding door of the window 70, providing an anti-pinch function.

[0127] Specifically, in conjunction with Figures 6 and 7, the control unit 11 will feed back the comparison results to the PLC 40, and the PLC 40 will perform corresponding operations based on the comparison results. For example, if the calculated exhaust value is greater than the exhaust reference value, the exhaust valve blade switch controller 41 controls the blade switch angle of the exhaust valve 21 to adjust the air volume to exhaust the calculated exhaust value; if the calculated exhaust value is less than or equal to the exhaust reference value, the exhaust valve blade switch controller 41 controls the blade switch angle of the exhaust valve 21 to adjust the air volume to exhaust the calculated exhaust reference value. For another example, if the calculated supply air value is greater than or equal to the supply air reference value, the supply air valve blade switch controller 42 controls the blade switch angle of the supply air valve 31 to adjust the air volume to supply the calculated supply air value; if the calculated supply air value is less than the supply air reference value, the supply air valve blade switch controller 42 controls the blade switch angle of the supply air valve 31 to adjust the air volume to supply the calculated supply air value. This can improve ventilation efficiency and save energy.

[0128] The embodiments of the present application do not limit the number of exhaust valves 21 and supply air valves 31 in the air volume control system. Exhaust valves 21 are used to measure and adjust the exhaust air volume, while supply air valves 31 are used to measure and adjust the supply air volume. For example, both exhaust valves 21 and supply air valves 31 in the present invention are pressure-independent air valves.

[0129] When the air volume control system is applied to the fume hood, the exhaust volume of the fume hood is measured by the exhaust valve 21, and the supply air volume of the fume hood is measured by the supply air valve 31. Based on the feedback from the detection unit 13 in the air volume control device 10, the exhaust volume is adjusted by the exhaust valve 21, and the supply air volume is adjusted by the supply air valve 31, thereby realizing the adjustment of the variable air volume in the fume hood.

[0130] In addition, the present invention also provides a computer storage medium, including a memory and a processor, wherein the memory is suitable for storing computer instructions, and the processor is suitable for executing the air volume control method described in any of the above embodiments when running the computer instructions.

[0131] Now referring to Figure 9, a block diagram of an electronic device 600 according to one embodiment of the present application is shown. The electronic device 600 is, for example, the air volume control system described above. The electronic device 600 may include one or more processors 601 coupled to a controller hub 603. For at least one embodiment, the controller hub 603 communicates with the processor 601 via a multi-drop bus such as a front-side bus (FSB), a point-to-point interface such as a QuickPath Interconnect (QPI), or a similar connection network interface 606. The processor 601 executes instructions that control general types of data processing operations. In one embodiment, the controller hub 603 includes, but is not limited to, a graphics & memory controller hub (GMCH) (not shown) and an input / output hub (IOH) (which may be on separate chips) (not shown), wherein the GMCH includes memory and graphics controllers and is coupled to the IOH.

[0132] The electronic device 600 may also include a coprocessor 602 and a memory 604 coupled to a controller hub 603. Alternatively, one or both of the memory and the GMCH may be integrated within the processor (as described herein), with the memory 604 and coprocessor 602 coupled directly to the processor 601 and the controller hub 603, with the controller hub 603 being in a single chip with the IOH.

[0133] The memory 604 can be, for example, a dynamic random access memory (DRAM), a phase change memory (PCM), or a combination of the two. The memory 604 may include one or more tangible, non-transitory computer-readable media for storing data and / or instructions. The computer-readable storage medium stores instructions, specifically, temporary and permanent copies of the instructions. The instructions may include: instructions that, when executed by at least one of the processors, cause the electronic device 600 to implement the air volume control method shown in Figures 1 to 2 and Figures 4 to 5. When the instructions are executed on the computer, the computer executes the method disclosed in any one of the above embodiments or combined embodiments to control the real-time air volume of the exhaust valve and the supply air valve.

[0134] In one embodiment, coprocessor 602 is a special-purpose processor, such as a high-throughput MIC (Many Integrated Core) processor, a network or communication processor, a compression engine, a graphics processor, a GPGPU (General-purpose computing on graphics processing units), or an embedded processor. The optional nature of coprocessor 602 is indicated by dashed lines in FIG9 .

[0135] In one embodiment, the electronic device 600 may further include a network interface controller (NIC) 606. The network interface 606 may include a transceiver for providing a radio interface for the electronic device 600, thereby communicating with any other suitable device (such as a front-end module, an antenna, etc.). In various embodiments, the network interface 606 may be integrated with other components of the electronic device 600. The network interface 606 may implement the functions of the communication unit in the above-mentioned embodiments.

[0136] The electronic device 600 may further include input / output (I / O) devices 605. The I / O 605 may include: a user interface designed to enable a user to interact with the electronic device 600; a peripheral component interface designed to enable peripheral components to interact with the electronic device 600; and / or sensors designed to determine environmental conditions and / or location information related to the electronic device 600.

[0137] It is worth noting that Figure 9 is merely exemplary. That is, although Figure 9 shows that electronic device 600 includes multiple components such as processor 601, controller hub 603, and memory 604, in actual applications, devices using the methods of the present application may only include a portion of the components of electronic device 600, for example, only processor 601 and network interface 606. The properties of optional components in Figure 9 are indicated by dotted lines.

[0138] Referring now to FIG. 10 , a block diagram of a SoC (System on Chip) 700 according to one embodiment of the present application is shown. In FIG. 10 , similar components have the same reference numerals. Additionally, dashed boxes indicate optional features of more advanced SoCs. In FIG. 10 , the SoC includes an interconnect unit 750 coupled to a processor 710; a system agent unit 780; a bus controller unit 790; an integrated memory controller unit 740; a set of one or more coprocessors 720, which may include integrated graphics logic, an image processor, an audio processor, and a video processor; a static random access memory (SRAM) unit 730; and a direct memory access (DMA) unit 760. In one embodiment, the coprocessors 720 include specialized processors, such as network or communication processors, compression engines, GPGPUs (General-Purpose Computing on Graphics Processing Units), high-throughput MIC processors, or embedded processors.

[0139] Static random access memory (SRAM) unit 730 may include one or more tangible, non-transitory computer-readable media for storing data and / or instructions. The computer-readable storage medium stores instructions, specifically, temporary and permanent copies of the instructions. The instructions may include instructions that, when executed by at least one of the processors, cause the SoC to implement the air volume control method shown in FIG1 . When executed on a computer, the instructions cause the computer to perform the method disclosed in the above embodiments.

[0140] Each method implementation method of the present application can be implemented in software, magnetic components, firmware, etc.

[0141] Program code can be applied to input instructions to perform the functions described herein and generate output information. The output information can be applied to one or more output devices in a known manner. For the purposes of this application, a processing system includes any system having a processor such as, for example, a digital signal processor (DSP), a microcontroller, an application specific integrated circuit (ASIC), or a microprocessor.

[0142] Program code can be implemented with a high-level programming language or an object-oriented programming language to communicate with the processing system. Where necessary, program code can also be implemented with assembly language or machine language. In fact, the mechanism described herein is not limited to the scope of any particular programming language. In either case, the language can be a compiled language or an interpreted language.

[0143] One or more aspects of at least one embodiment may be implemented by representative instructions stored on a computer-readable storage medium, which represent various logic within a processor and, when read by a machine, cause the machine to fabricate logic for performing the techniques herein. These representations, known as "IP (Intellectual Property) cores," may be stored on tangible computer-readable storage media and provided to multiple customers or production facilities to be loaded into fabrication machines that actually fabricate the logic or processor.

[0144] In some cases, an instruction converter may be used to convert instructions from a source instruction set to a target instruction set. For example, the instruction converter may transform (e.g., using static binary transformation, dynamic binary transformation including dynamic compilation), morph, emulate, or otherwise convert an instruction into one or more other instructions to be processed by the core. The instruction converter may be implemented in software, hardware, firmware, or a combination thereof. The instruction converter may be on-processor, off-processor, or partially on-processor and partially off-processor.

[0145] Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above description is provided as a further detailed description of the present invention in conjunction with specific embodiments thereof, and that the specific implementation of the present invention is not limited to these descriptions. Those skilled in the art may make various changes in form and details, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An air volume control method, applied to an air volume control system, wherein the air volume control system comprises an exhaust valve and an air supply valve; characterized in that: The air volume control method comprises: Determining that the air volume control system is in a first operating mode; Obtaining the exhaust volume of the exhaust valve; Determine the calculated makeup air value corresponding to the current exhaust air volume; comparing the calculated air supply value with the air supply reference value; If the calculated air supply value is greater than or equal to the air supply reference value, the air supply valve supplies air at the air supply reference value; If the calculated air supply value is less than the air supply reference value, the air supply valve supplies air at the calculated air supply value; Obtaining a first supply air volume of the supply air valve; Determine a first calculated exhaust air value corresponding to the current first makeup air volume; comparing the first calculated exhaust value with an exhaust reference value; If the first calculated exhaust value is greater than the exhaust reference value, the exhaust valve exhausts air at the first calculated exhaust value; If the first calculated exhaust value is less than or equal to the exhaust reference value, the exhaust valve exhausts air at the exhaust reference value.

2. The air volume control method according to claim 1, characterized in that: The air volume control method further comprises: Determining that the air volume control system is in a second operating mode; Obtaining a second air supply volume of the air supply valve; Determine a second calculated exhaust air value corresponding to the current second makeup air volume; comparing the second calculated exhaust value with an exhaust reference value; If the second calculated exhaust value is greater than the exhaust reference value, the exhaust valve exhausts air at the second calculated exhaust value; If the second calculated exhaust value is less than or equal to the exhaust reference value, the exhaust valve exhausts air at the exhaust reference value; The air supply valve is in a closed state.

3. The air volume control method according to claim 1, characterized in that: The air volume control system is used for application in a fume hood, the fume hood includes a window, and the comparing the first calculated exhaust value with the exhaust reference value includes: Determining a theoretical surface wind speed of the air volume control system; The first calculated exhaust value is V 计1 , V 计1 =V 补1 ÷C÷K 补 , where V 补1 represents the first air supply volume of the current air supply valve, C represents the air supply ratio, K 补 Indicates the supplementary air correction percentage; The exhaust air reference value is V 排参 , V 排参 =(V 面 ×K 面 )×W×H+M 排 , where V 面 represents the theoretical surface wind speed set by the air volume control system, K 面 represents the face wind speed correction percentage, W represents the width of the window, H represents the height of the window opening, M 排 Indicates the exhaust air correction value.

4. The air volume control method according to claim 2, characterized in that: The comparing the second calculated exhaust value with the exhaust reference value comprises: determining an idle air volume setting value of the air volume control system; The second calculated exhaust value is V 计2 , V 计2 =V 补2 ÷C÷K 补 , where V 补2 represents the second air supply volume of the current air supply valve, C represents the air supply ratio, K 补 Indicates the supplementary air correction percentage; The exhaust air reference value is V 排参 , V 排参 =V 空 +M 排 , where V 空 represents the idle air volume setting value set by the air volume control system, M 排 Indicates the exhaust air correction value.

5. The air volume control method according to claim 1, characterized in that: Comparing the calculated supplementary air value with the supplementary air reference value comprises: Determining a theoretical surface wind speed of the air volume control system; The calculated air supply value is V 计3 , V 计3 =V 排 ×C×K 补 , where V 排 Indicates the exhaust volume of the current exhaust valve, C indicates the air supply ratio, K 补 Indicates the supplementary air correction percentage; The reference value of air supply is V 补参 , V 补参 =V 排参 ×C×K 补 , where V 排参 Indicates the exhaust reference value of the exhaust valve.

6. The air volume control method according to claim 1, characterized in that: The air volume control system is used for application in a fume hood, and determining that the air volume control system is in the first working mode includes: detecting a first switching signal, and the air volume control system switches from the second working mode to the first working mode, so as to switch the fume hood from the second working mode to the first working mode.

7. The air volume control method according to claim 2, characterized in that: The air volume control system is used for application in a fume hood, and determining that the air volume control system is in the second working mode includes: detecting a second switching signal, and the air volume control system switches from the first working mode to the second working mode, so as to switch the fume hood from the first working mode to the second working mode.

8. The air volume control method according to claim 6, characterized in that: The detecting the first switching signal comprises: acquiring the first switching signal input by a staff through an input terminal.

9. The air volume control method according to claim 7, characterized in that: The detecting the second switching signal comprises: acquiring the second switching signal inputted by the staff through the input terminal.

10. The air volume control method according to claim 8 or 9, characterized in that: The input end is a touch screen having a first touch area and a second touch area. Activating the first touch area is used to output a first switching signal, and activating the second touch area is used to output a second switching signal.

11. The air volume control method according to claim 7, characterized in that: When the fume hood is in the second working mode, the height of the window opening of the fume hood is a set distance, and the set distance is H, which is less than or equal to 300 mm.

12. A fume hood, characterized in that: It includes an air volume control system, which includes an exhaust valve and a make-up air valve, and the air volume control system is connected to the exhaust valve and the make-up air valve respectively; wherein the air volume control system is used to execute the air volume control method described in any one of claims 1 to 11.

13. The fume hood according to claim 12, characterized in that: The exhaust valve is a pressure-independent air valve.

14. The fume hood according to claim 12, characterized in that: The air supply valve is a pressure-independent air valve.

15. A computer storage medium, characterized in that The invention comprises a memory and a processor, wherein the memory is suitable for storing computer instructions, and the processor is suitable for executing the air volume control method according to any one of claims 1 to 11 when running the computer instructions.

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