Air volume measuring device, air volume measuring pipe and air conditioning system

Abstract

The utility model provides an air volume measuring device, an air volume measuring tube and an air conditioning system, the air volume measuring device is used for measuring the air volume of flowing air in a to-be-measured environment, the air volume measuring device comprises a flow equalizing plate and a sensor sliding track which are sequentially arranged along the flowing direction of the flowing air, and the flow equalizing plate is vertical to the flowing direction of the flowing air; the wind speed sensor is arranged on the sensor sliding rail in a sliding mode, and the sensor sliding rail comprises a plurality of measuring point positions. According to the air volume measuring device, air passes through the flow equalizing plate, then the air speed sensor installed on the sensor sliding rail carries out real-time air speed measurement, and air speed measurement data are fed back to the control cabinet for calculation, so that uninterrupted real-time dynamic accurate measurement of the air volume and real-time monitoring of air volume changes are achieved; and meanwhile, high-precision air volume data are provided, so that an excess operation mode can be avoided, and dynamic energy conservation is realized.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an air volume measuring device, an air volume measuring tube, and an air conditioning system. Background Technology

[0002] In the electronics, pharmaceutical, and commercial sectors, many buildings utilize centralized air conditioning systems. For commissioning and routine maintenance, online monitoring of the fresh air volume (supply, return, and exhaust) of these systems is necessary. However, traditional airflow measurement methods have significant limitations. The conventional approach involves installing a wind speed sensor inside the duct, measuring the wind speed at a single point, and calculating the airflow based on the duct's cross-sectional area. This method ignores the uneven wind speed distribution across the duct cross-section during actual use, leading to significant deviations in real-time data. Furthermore, sensor misalignment can affect the accuracy of the measurements. This can influence the selection of the air handling unit's fan operating frequency, causing the fresh air volume to exceed design values, and resulting in unnecessary energy waste. Utility Model Content

[0003] In view of the shortcomings of the prior art, this utility model provides an air volume measuring device, an air volume measuring tube, and an air conditioning system to help solve the problem that the existing air volume detection methods are not accurate enough, which affects the selection of the operating frequency of the air conditioning unit fan and thus causes unnecessary energy waste.

[0004] To achieve the above and other related objectives, the first aspect of this utility model provides an airflow measuring device for measuring the airflow of flowing air in a test environment, comprising: a flow equalization plate and a sensor sliding track arranged sequentially along the flow direction of the flowing air, wherein the flow equalization plate is perpendicular to the flow direction of the flowing air; and a wind speed sensor slidably disposed on the sensor sliding track, wherein the sensor sliding track includes multiple measurement points.

[0005] In some embodiments of the first aspect of this utility model, the cross section where the sensor sliding track is located is perpendicular to the flow direction of the flowing air, and a plurality of the measurement points are uniformly arranged on the cross section.

[0006] In some embodiments of the first aspect of this utility model, the air volume measuring device further includes a sliding rail support; the sensor sliding rail is disposed on the sliding rail support.

[0007] In some embodiments of the first aspect of this utility model, the flow equalization plate is provided with a plurality of flow equalization holes.

[0008] To achieve the above and other related objectives, a second aspect of this utility model provides an airflow measuring tube, comprising: an insulated air duct; and an airflow measuring device as described above, wherein the airflow measuring device is disposed within the insulated air duct.

[0009] To achieve the above and other related objectives, a third aspect of this utility model provides an air conditioning system, comprising: a plurality of air volume measuring tubes as described above.

[0010] In some embodiments of the third aspect of this utility model, the air conditioning system further includes: an air conditioning unit and a clean room; an air supply duct and a return air duct are connected between the air conditioning unit and the clean room.

[0011] In some embodiments of the third aspect of this utility model, the air conditioning unit is provided with a fresh air inlet and a supply air outlet, the fresh air inlet being connected to a fresh air duct, and the supply air outlet being connected to a supply air duct; wherein: the air volume measuring tube and the fresh air electric regulating valve are sequentially arranged on the fresh air duct along the air intake direction; the supply air duct is sequentially arranged with the supply air electric regulating valve and the air volume measuring tube along the air supply direction.

[0012] In some embodiments of the third aspect of this utility model, the air conditioning unit is further provided with a return air inlet, which is connected to a return air duct; the return air duct is provided with the air volume measuring tube and the return air electric regulating valve in sequence along the return air direction.

[0013] In some embodiments of the third aspect of this utility model, the clean room is provided with an exhaust duct, and the air volume measuring tube and the exhaust fan frequency converter are sequentially arranged on the exhaust duct along the exhaust direction.

[0014] As described above, the air volume measuring device, air volume measuring tube, and air conditioning system provided by this utility model have the following beneficial effects: In the air volume measuring device, air passes through the flow equalization plate, and then the wind speed sensor installed on the sensor sliding rail performs real-time wind speed measurement and feeds the wind speed measurement data back to the control cabinet for calculation, thereby realizing uninterrupted real-time dynamic and accurate measurement of air volume and real-time monitoring of air volume changes. At the same time, providing high-precision air volume data can avoid over-operation mode, thereby achieving dynamic energy saving. Attached Figure Description

[0015] Figure 1 The diagram shown is a structural schematic of an airflow measuring device according to an embodiment of the present invention.

[0016] Figure 2 The diagram shown is a structural schematic of a flow equalization plate according to one embodiment of the present invention.

[0017] Figure 3 The diagram shown is a structural schematic of an air conditioning system according to an embodiment of the present invention.

[0018] Figure 4 The diagram shown is a schematic of an air conditioning unit and a clean room connected to a PLC control cabinet in one embodiment of the present invention.

[0019] Component designation explanation

[0020] 11 Flow Equalizer

[0021] 12 Sensor sliding rails

[0022] 13 Wind speed sensor

[0023] 14 Measurement Points

[0024] 15 Sliding rail bracket

[0025] 16 Insulated air duct

[0026] 17. Fixing bolt washers

[0027] 2. Air conditioning units

[0028] 21 New Opportunities

[0029] 211 Fresh Air Duct

[0030] 212 Fresh Air Electric Regulating Valve

[0031] 22 Air outlet

[0032] 221 Air supply duct

[0033] 222 Electric air supply regulating valve

[0034] 23 Return air vent

[0035] 231 Return air duct

[0036] 232 Return Air Electric Regulating Valve

[0037] 24. Pre-filter

[0038] 25 Medium-efficiency filter

[0039] 26. Blower

[0040] 3 Cleanroom

[0041] 31 Exhaust duct

[0042] 32 Exhaust Fan Frequency Converter

[0043] 4 PLC control cabinet Detailed Implementation

[0044] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0045] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this utility model, should still fall within the scope of the technical content disclosed in this utility model. The following detailed description should not be considered restrictive, and the scope of the embodiments of this application is limited only by the claims of the published patents. The terminology used herein is for describing specific embodiments only and is not intended to limit this application. Spatial terms such as "upper," "lower," "left," "right," "below," "below," "lower part," "above," "upper part," etc., may be used in the text to illustrate the relationship between one element or feature shown in the figures and another element or feature.

[0046] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," and "holding" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0047] Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, operation, element, component, item, kind, and / or group, but do not preclude the presence, occurrence, or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition arise only when combinations of elements, functions, or operations are inherently mutually exclusive in some manner.

[0048] This utility model provides an air volume measuring device, an air volume measuring tube, and an air conditioning system. In the air volume measuring device, air passes through a flow equalization plate, and then a wind speed sensor installed on a sensor sliding rail measures the wind speed in real time. The wind speed measurement data is fed back to the control cabinet for calculation, thereby realizing uninterrupted real-time dynamic and accurate measurement of air volume and real-time monitoring of air volume changes. At the same time, providing high-precision air volume data can avoid over-operation mode, thereby achieving dynamic energy saving.

[0049] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit the utility model.

[0050] like Figure 1 The diagram shows a structural schematic of an airflow measuring device according to an embodiment of the present invention. The airflow measuring device in this embodiment is used to measure the airflow of flowing air in the environment to be measured. It includes: a flow equalization plate 11 and a sensor sliding track 12 arranged sequentially along the flow direction of the flowing air. The flow equalization plate 11 is perpendicular to the flow direction of the flowing air. A wind speed sensor 13 is slidably disposed on the sensor sliding track 12. The sensor sliding track 12 includes multiple measurement points 14.

[0051] It should be noted that the function of the flow equalization plate 11 is to uniformly distribute the flowing air, reduce local eddies and velocity unevenness, thereby improving the accuracy of subsequent wind speed measurements. The flow equalization plate is positioned perpendicular to the flow direction of the air, effectively rectifying the airflow and reducing measurement errors. The sensor sliding track 12 is the track platform for the movement of the wind speed sensor 13, which slides along the sensor sliding track 12 between multiple measurement points 14. The design of multiple measurement points 14 allows the wind speed sensor 13 to perform velocity measurements at multiple locations along the flow direction of the air, and calculate the airflow volume in the measured environment based on the velocity, thus improving the accuracy of airflow measurement. The wind speed sensor 13 can have its own sliding mechanism or be mounted on a slider and then installed on the sensor sliding track 12, facilitating movement and switching between various measurement points along the sensor sliding track 12.

[0052] like Figure 1As shown, in one embodiment, the cross-section of the sensor sliding track 12 is perpendicular to the flow direction of the airflow, and multiple measurement points 14 are evenly distributed on the cross-section. The cross-section of the sensor sliding track 12 is also perpendicular to the flow direction of the airflow, which helps to capture the airflow. The even distribution of multiple measurement points 14 on the cross-section means that the wind speed sensor 13 can perform measurements at different locations, thereby obtaining the wind speed distribution across the entire cross-section. Simultaneously, the evenly distributed measurement points help reduce blind spots in the measurement, ensuring the representativeness and accuracy of the measurement data.

[0053] In this embodiment, the airflow measuring device has a flow equalization plate 11 and a sensor sliding track 12 arranged in parallel, both perpendicular to the direction of airflow. During measurement, the airflow first passes through the flow equalization plate 11, and then the wind speed sensor 13 on the sensor sliding track 12 slides along the track and measures the wind speed in real time. This device takes into account both the uniformity of airflow and the flexibility of measurement, making wind speed measurement more accurate and comprehensive.

[0054] like Figure 1 As shown, in one embodiment, the airflow measuring device further includes a sliding rail bracket 15; the sensor sliding rail 12 is disposed on the sliding rail bracket 15. The sliding rail bracket 15 provides stable support for the sensor sliding rail 12, ensuring that the rail remains fixed and horizontal during measurement. The sliding rail bracket 15 can be made of metal or plastic, and its connection method can be bolt fastening, clamp fastening, hinge connection, etc., to ensure its stability. At the same time, the sliding rail bracket 15 needs to take into account the installation environment of the airflow measuring device, such as inside an air conditioner, and needs to have characteristics such as corrosion resistance and high and low temperature resistance.

[0055] like Figure 2 As shown, in one embodiment, the flow equalization plate 11 is provided with a plurality of flow equalization holes 111. The provision of multiple flow equalization holes 111 on the flow equalization plate 11 is to achieve uniform airflow distribution and also helps to improve the overall performance and accuracy of the airflow measurement device. Simultaneously, the uniform distribution of the flow equalization holes 111 also helps to improve the accuracy of airflow measurement, reduce resistance loss, and thus more accurately reflect the real-time state of airflow in the environment under test.

[0056] like Figure 1 As shown in the figure, this utility model embodiment also provides an airflow measuring tube, including: an insulated air duct 16 and an airflow measuring device as described above, wherein the airflow measuring device is disposed inside the insulated air duct 16. A fixing bolt washer 17 is also provided on the sliding rail bracket 15 inside the airflow measuring device, that is, the sliding rail bracket 15 is fastened to the insulated air duct 16 by fixing bolts. The insulated air duct 16 can be spliced ​​with the air duct, that is, the airflow measuring tube can be spliced ​​and installed on the air duct for measuring the wind speed inside the air duct and then calculating the airflow volume inside the air duct.

[0057] It should be noted that the airflow measuring device in this embodiment can be installed in various environments to be tested, depending on the actual situation. A structure that installs the airflow measuring device inside an insulated air duct can also be provided, forming an airflow measuring tube. This airflow measuring tube is easy to install and remove, which is beneficial for scenarios requiring frequent inspection and maintenance.

[0058] like Figure 1 As shown, in some examples, the insulated duct 16 is provided with a flange 18 at its port, which allows for connection between duct sections. The airflow measuring tube is connected to each duct of the air conditioning system via the flange 18, facilitating disassembly and installation.

[0059] like Figure 3 As shown in the figure, this utility model embodiment also provides an air conditioning system, including: a plurality of air volume measuring tubes as described above. Installing the air volume measuring tubes within the air conditioning system allows for real-time measurement of the air volume of the air conditioning system, and the air volume measuring tubes can also be disassembled and maintained at any time.

[0060] like Figure 3 As shown, in one embodiment, the air conditioning system further includes an air conditioning unit 2 and a clean room 3; an air supply duct 221 and a return air duct 231 are connected between the air conditioning unit 2 and the clean room 3.

[0061] It should be noted that the supply air duct 221 is the pipe connecting the air conditioning unit 2 and the clean room 3, used to deliver treated air from the air conditioning unit 2 to the clean room 3. The design of the supply air duct 221 needs to consider the uniformity of airflow and pressure loss to ensure that the air can be evenly distributed to all areas within the clean room 3. The return air duct 231 is the pipe that returns air from the clean room 3 to the air conditioning unit 2. The design of the return air duct also needs to consider the uniformity of airflow and pressure loss.

[0062] First, the air conditioning unit 2 processes the outdoor air or return air to achieve the required temperature and humidity. The processed air is then sent into the clean room 3 through the supply air duct 221, where it undergoes filtration to maintain the required air cleanliness and temperature and humidity. After processing, the air in the clean room 3 is returned to the air conditioning unit 2 through the return air duct 231 for reuse.

[0063] like Figure 3 As shown, in one embodiment, the air conditioning unit 2 is provided with a fresh air inlet 21 and a supply air outlet 22. The fresh air inlet 21 is connected to a fresh air duct 211, and the supply air outlet 22 is connected to a supply air duct 221. The fresh air duct 211 is provided with an air volume measuring tube and a fresh air electric regulating valve 212 in sequence along the air intake direction. The supply air duct 221 is provided with a supply air electric regulating valve 222 and the air volume measuring tube in sequence along the air supply direction.

[0064] It should be noted that the fresh air inlet 21 is the inlet on the air conditioning unit 2 used to introduce fresh outdoor air. The air outlet 22 is the outlet on the air conditioning unit 2 used to deliver treated air into the air supply duct 221. The fresh air duct 211 is connected to the fresh air inlet 21 and is used to introduce fresh outdoor air into the air conditioning unit 2.

[0065] like Figure 3 As shown, an airflow measuring tube 1A is installed on the fresh air duct 211 to measure the airflow of the incoming fresh air. Along the direction of the incoming fresh air, a fresh air electric regulating valve 212 is installed after the airflow measuring tube 1A to control the amount of fresh air entering the air conditioning unit 2 by adjusting the opening of the fresh air electric regulating valve 212. The supply air duct 221 is connected to the air outlet 22 to deliver treated air into the clean room 3. The supply air electric regulating valve 222 is installed on the supply air duct 221 to regulate the airflow within the supply air duct 221, thereby controlling the airflow delivered to the clean room 3. An airflow measuring tube 1B is also installed on the supply air duct 221, and along the airflow direction, it is installed after the supply air electric regulating valve 222 to measure the airflow of the supplied air. Both the fresh air electric regulating valve 212 and the supply air electric regulating valve 222 are valves controlled by electric actuators, which can control the opening of the regulating valves to precisely control the airflow.

[0066] like Figure 3 As shown, in one embodiment, the air conditioning unit 2 is also provided with a return air inlet 23, which is connected to a return air duct 231; the return air duct 231 is provided with the air volume measuring tube and the return air electric regulating valve 232 in sequence along the return air direction.

[0067] It should be explained that the return air vent 23 is the inlet on the air conditioning unit 2 used to collect return air. The return air duct 231 connects to the return air vent 23 and is used to transport the return air from the cleanroom 3 back to the air conditioning unit 2 for reprocessing. An airflow measuring pipe 1C is installed on the return air duct 231 to measure the return airflow, ensuring that the return airflow meets design requirements and can also be used to monitor the operating status of the air conditioning system. Following the return air direction, an electric return air regulating valve 232 is installed after the airflow measuring pipe 1C to regulate the airflow within the return air duct 231, thereby controlling the airflow returning from the cleanroom 3 to the air conditioning unit 2.

[0068] like Figure 3 As shown, in one embodiment, the clean room 3 is provided with an exhaust duct 31, and the exhaust duct 31 is provided with the air volume measuring tube and the exhaust fan frequency converter 32 in sequence along the exhaust direction.

[0069] It should be noted that the exhaust duct 31 is a pipe on the clean room 3 used to exhaust air to the outside. An airflow measuring pipe 1D is installed on the exhaust duct 31 to measure the exhaust airflow, ensuring that the exhaust volume meets design requirements and also for monitoring the operating status of the air conditioning system. An exhaust fan frequency converter 32 is also installed after the airflow measuring pipe 1D along the exhaust direction. The exhaust fan frequency converter 32 is used to control the speed of the exhaust fan, thereby adjusting the exhaust volume.

[0070] like Figure 3 As shown, in some examples, the air conditioning unit 2 also includes a primary filter 24, a secondary filter 25, and a blower 26.

[0071] It should be noted that the filters in air conditioning units purify the air through porous filter materials to ensure the cleanliness of the internal air. Based on filtration efficiency, they are divided into pre-filters and medium-efficiency filters. Pre-filters and medium-efficiency filters can filter out some impurities in the air. Pre-filters are simple, basic filters with a filtration efficiency of less than 90%, mainly including pre-filter panel filters, pre-filter pleated filters, pre-filter bag filters, and metal mesh regeneration filters. Medium-efficiency filters have a filtration efficiency between 90% and 95%, mainly including medium-efficiency bag filters and glass fiber filters. Compared to pre-filters, medium-efficiency filters have better and more stable filtration effects and a longer service life. Using a combination of filters with different efficiencies in the air conditioning system, that is, using both pre-filters and medium-efficiency filters simultaneously, can effectively filter the air to meet purification requirements and ensure the normal operation of the air conditioning unit. The blower 26 is used to supply the processed air inside the air conditioning unit 2.

[0072] To facilitate the demonstration of the air conditioning system in this embodiment, such as Figure 4 As shown, the air conditioning unit 2 and the clean room 3 are connected to the PLC control cabinet 4. The following specific embodiments are provided for illustration, taking the fresh air duct 211 as an example. The specific implementation process is as follows:

[0073] 1. The PLC control cabinet 4 controls the sliding of the wind speed sensor 1 in the air volume measuring tube 1A on the fresh air duct 211, sets the running path of the wind speed sensor 1 on the sensor sliding track 12, and records the sliding position information of the wind speed sensor 1 in real time.

[0074] 2. Initialize and establish the segmented measurement zone model of the current fresh air duct 211 cross-section. The wind speed sensor 1 slides on the sensor sliding track 12 according to the preset running path, moving from measurement point 14-N to 14-N+1, and records the running data, including two recording modes:

[0075] (a) Real-time operation recording mode: The current wind speed sensor 1 of the fresh air duct 211 moves from the measurement point 14-N to 14-N+1, records the sliding time and real-time wind speed information and feeds it back to the PLC control cabinet 4. The PLC control cabinet 4 calculates and generates the change curve of sliding time and real-time wind speed, and calculates the air volume of the current segmented measurement area; the subsequent segmented measurement areas repeat the recording process and feed it back to the PLC control cabinet 4; after calculating the air volume of each segmented measurement area, the air volume data of the current fresh air duct 211 is obtained by comprehensive calculation.

[0076] (b) Node operation recording mode: The wind speed sensor 1 of the current fresh air duct 211 moves from measurement point 14-1 to 14-N, records the real-time wind speed information of each measurement point and feeds it back to the PLC control cabinet 4. Based on the real-time wind speed information and measurement point information of all measurement points, the air volume data of the current fresh air duct 211 is calculated.

[0077] The above two recording methods can be used to achieve continuous dynamic analog quantity testing and accurately calculate air volume by establishing a model of each segmented measurement area of ​​the duct cross-section. Alternatively, the real-time air volume can be calculated by taking the wind speed values ​​at each measurement point.

[0078] 3. The PLC control cabinet 4 reads the airflow measurement data from the airflow measuring tube 1A on the fresh air duct 211, the airflow measuring tube 1B on the supply air duct 221, the airflow measuring tube 1C on the return air duct 231, and the airflow measuring tube 1D on the exhaust air duct 31. It compares the airflow data from the airflow measuring tube 1B on the supply air duct 221 with the preset airflow value, and adjusts the supply fan 26 or the electric supply air regulating valve 222 according to the comparison result to ensure that the airflow data from the airflow measuring tube 1B is consistent with the preset airflow value; it also compares the airflow data from the airflow measuring tube 1D on the exhaust air duct 31 with the preset airflow value, and adjusts the exhaust fan frequency converter 32 according to the comparison result to ensure that the airflow data from the airflow measuring tube 1D is consistent with the preset airflow value. This avoids excessive airflow operation, thus achieving energy-saving operation.

[0079] 4. Real-time airflow measurement via an airflow measuring tube can also be used for positive pressure control in air conditioning systems. Positive pressure control methods include the following two:

[0080] (a) Positive pressure control mode 1: Read the fresh air volume data from the air volume measuring tube 1A on the fresh air duct 211 and compare it with the preset dynamic value. The preset dynamic value is:

[0081] Fresh air volume = Positive pressure air volume + Exhaust air volume;

[0082] The fresh air volume is measured by the air volume measuring tube 1A on the fresh air duct 211, and the exhaust air volume is measured by the exhaust air volume measuring tube 1D on the exhaust air duct 31. At this time, the air volume data can be used to assist in fault diagnosis or control, ensuring that the fresh air volume meets the positive pressure requirements of the cleanroom and does not exceed the preset dynamic value range.

[0083] (b) Positive pressure control mode two: Read the return air volume data of the air volume measuring tube 1C on the return air duct 231 and compare it with the preset dynamic value. At this time, the preset dynamic value is:

[0084] Fresh air volume = Supply air volume - Positive pressure air volume + Exhaust air volume = Supply air volume - Return air volume;

[0085] Specifically, the fresh air volume is measured by the air volume measuring tube 1A on the fresh air duct 211, the exhaust air volume is measured by the exhaust air volume measuring tube 1D on the exhaust air duct 31, the supply air volume is measured by the air volume measuring tube 1B on the supply air duct 221, and the return air volume is measured by the return air volume measuring tube 1C on the return air duct 231. At this time, each air volume data can be used to assist in fault diagnosis or control, ensuring that the fresh air volume meets the positive pressure requirements of the cleanroom and does not exceed the preset dynamic value range.

[0086] 5. Through the above operation, the fresh air volume, supply air volume, return air volume, and exhaust air volume of the air conditioning system are all controlled within the preset air volume range, and are dynamically adjusted according to the changes in the operation of the air conditioning system, avoiding over-operation mode, thereby achieving dynamic energy saving.

[0087] It is important to emphasize that the airflow measuring device of this invention, by installing a flow equalization plate, allows the flowing air to pass through the flow equalization plate in the direction of airflow, which can play a role in uniform airflow and improve measurement accuracy. The wind speed sensor in the airflow measuring device measures the airflow in multiple areas and at multiple points by sliding along a preset running path, thereby calculating the total airflow. The airflow measuring device can also be expanded to install multiple sliders to support multiple wind speed sensors, and the sliding trajectory can be customized to improve the airflow measurement accuracy. Based on the data such as supply airflow, return airflow, exhaust airflow, and fresh airflow measured by the airflow measuring device, and combined with the setting parameters of the air conditioning system, the corresponding fan frequency is adjusted to achieve energy-saving operation.

[0088] It should be emphasized that the airflow measuring device provided in this utility model is a hardware device, and any software technology updates are not within the protection scope of this utility model. The airflow measuring device in this utility model can be used alone or in combination with some existing software or programs, but this utility model itself does not involve any software technology updates.

[0089] In summary, this utility model provides an airflow measurement device, an airflow measurement tube, and an air conditioning system. The airflow measurement device is used to measure the airflow of flowing air in a test environment. It includes: a flow equalization plate and a sensor sliding track arranged sequentially along the flow direction of the airflow, wherein the flow equalization plate is perpendicular to the flow direction of the airflow; and a wind speed sensor slidably mounted on the sensor sliding track, which includes multiple measurement points. In this utility model's airflow measurement device, air passes through the flow equalization plate, and then the wind speed sensor mounted on the sensor sliding track performs real-time wind speed measurement. The wind speed measurement data is fed back to the control cabinet for calculation, thereby realizing uninterrupted real-time dynamic and accurate measurement of airflow and real-time monitoring of airflow changes. Simultaneously, providing high-precision airflow data can avoid over-operation modes, thus achieving dynamic energy saving. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0090] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An airflow measuring device for measuring the airflow of flowing air in a test environment, characterized in that, include: A flow equalization plate (11) and a sensor sliding track (12) are arranged sequentially along the flow direction of the airflow, wherein the flow equalization plate (11) is perpendicular to the flow direction of the airflow. A wind speed sensor (13) is slidably mounted on the sensor sliding track (12), which includes multiple measurement points (14).

2. The air volume measuring device according to claim 1, characterized in that, The cross section of the sensor sliding track (12) is perpendicular to the flow direction of the flowing air, and multiple measurement points (14) are evenly arranged on the cross section.

3. The air volume measuring device according to claim 1, characterized in that, The air volume measuring device also includes a sliding rail bracket (15); the sensor sliding rail (12) is disposed on the sliding rail bracket (15).

4. The air volume measuring device according to claim 1, characterized in that, The flow equalization plate (11) is provided with a plurality of flow equalization holes (111).

5. An airflow measuring tube, characterized in that, include: Insulated air duct (16); The air volume measuring device according to any one of claims 1 to 4, wherein the air volume measuring device is disposed inside the insulated air duct (16).

6. An air conditioning system, characterized in that, include: Multiple airflow measuring tubes as described in claim 5.

7. The air conditioning system according to claim 6, characterized in that, The air conditioning system also includes an air conditioning unit (2) and a clean room (3); an air supply duct (221) and a return air duct (231) are connected between the air conditioning unit (2) and the clean room (3).

8. The air conditioning system according to claim 7, characterized in that, The air conditioning unit (2) is provided with a fresh air inlet (21) and a supply air outlet (22), wherein the fresh air inlet (21) is connected to a fresh air duct (211) and the supply air outlet (22) is connected to a supply air duct (221); wherein: The fresh air duct (211) is provided with the air volume measuring tube and the fresh air electric regulating valve (212) in sequence along the air intake direction; The air supply pipe (221) is provided with an electric air supply regulating valve (222) and the air volume measuring pipe in sequence along the air supply direction.

9. The air conditioning system according to claim 7, characterized in that, The air conditioning unit (2) is also provided with a return air inlet (23), which is connected to a return air duct (231); the return air duct (231) is provided with the air volume measuring pipe and the return air electric regulating valve (232) in sequence along the return air direction.

10. The air conditioning system according to claim 7, characterized in that, The clean room (3) is provided with an exhaust pipe (31), and the air volume measuring pipe and the exhaust fan frequency converter (32) are arranged sequentially along the exhaust direction on the exhaust pipe (31).

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