Fresh air assembly testing device and system

Abstract

The utility model discloses a fresh air assembly testing device and a fresh air assembly testing system, and belongs to the technical field of testing. The fresh air assembly testing device comprises a testing box body which is provided with an air inlet, an air outlet and an inner cavity; the air duct assembly is arranged in the inner cavity and comprises an air guide cylinder, one end of the air guide cylinder is in butt joint with the inner side of the air inlet, and the other end of the air guide cylinder faces the air outlet; and the test assembly comprises an air speed sensor arranged in the air guide cylinder and an electrical box connected with the air speed sensor. The fresh air assembly testing device provided by the utility model adopts a modular structure, is convenient to move integrally, and is suitable for various detection occasions; when the device is used, the fresh air port or the exhaust port of the fresh air assembly to be tested is in butt joint with the air inlet of the fresh air assembly testing device, and the corresponding air speed and / or air volume are / is obtained through sensing signals, collected by the electrical box, of the air speed sensor. The fresh air assembly testing system provided by the utility model comprises the fresh air assembly testing device, an upper computer and a controller.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing devices, and in particular relates to a fresh air component testing device and a testing system. Background Art

[0002] A fresh air assembly, also known as a fresh air component, fresh air device, or fresh air mechanism, is an independent device or system component used to exchange indoor and outdoor air. It primarily uses fresh air inlets and exhaust vents to draw fresh air into the room while simultaneously exhausting polluted air, creating a circulation system that improves indoor air quality. Furthermore, fresh air assemblies filter, disinfect, and sterilize incoming air, ensuring clean and healthy indoor air.

[0003] Fresh air units are widely used in hospitals, office buildings, shopping malls, and residential environments. For example, as a key component of household cabinet air conditioners, fresh air units help improve air quality in residential environments. The fresh air unit's centrifugal fan works in conjunction with the fresh air system ducting to circulate and exchange air inside and outside the room. Therefore, for a fresh air unit with a centrifugal fan at its core, the air speed and air volume at different ventilation settings are key attributes.

[0004] Currently, testing of fresh air components involves simply testing the drive motor's response to power-up, failing to quantitatively measure the actual ventilation speed and air volume of the entire unit at different speeds. In production, the effectiveness of fresh air components can only be verified through manual experience-based judgment by testers during the wind speed function test during commercial inspection of the entire unit. This testing process not only places high demands on workers' physical strength and proficiency, but also poses challenges in terms of test time and process. The test results and conclusions are also controversial, failing to meet the requirements of lean production. Utility Model Content

[0005] The purpose of this utility model is to provide a fresh air component testing device and a testing system, aiming to improve the testing efficiency of the fresh air component; this utility model is achieved through the following scheme.

[0006] In a first aspect of the present invention, a fresh air component testing device is provided, comprising:

[0007] The test box has an air inlet, an air outlet and an inner cavity;

[0008] An air duct assembly is disposed in the inner cavity and includes an air guide tube with one end docked with the inner side of the air inlet and the other end facing the air outlet;

[0009] The test assembly includes a wind speed sensor arranged in the air guide tube and an electrical box connected to the wind speed sensor.

[0010] The fresh air component testing device provided by the above technical solution has the following beneficial effects: the entire device adopts a modular structure, which is convenient for overall movement and is suitable for a variety of testing occasions; when in use, the fresh air inlet or exhaust outlet of the fresh air component to be tested is connected to the air inlet of the fresh air component testing device, and the corresponding wind speed and / or air volume are obtained through the sensor signal of the wind speed sensor collected by the electrical box.

[0011] As a preferred technical solution, the fresh air component testing device also includes a docking piece, one end of which is fixedly docked with the outer side of the air inlet, and the other end is provided with a bell mouth that is socketed with the fresh air inlet or exhaust outlet of the fresh air component to be tested.

[0012] The beneficial effect of the above-mentioned preferred scheme is that: through the trumpet mouth set at the other end of the docking piece, it can be quickly and stably connected with the fresh air inlet or exhaust outlet of the fresh air component to be tested, without air leakage and good compatibility, and can enable the air blown out by the fresh air component to be tested to be efficiently introduced into the air inlet and air guide tube of the test box.

[0013] As a preferred technical solution, the air inlet and the air outlet are respectively opened on two opposite surfaces of the test box; and the air guide tube is a straight tube.

[0014] The beneficial effect of the above preferred solution is that it can keep the wind blown out by the fresh air component as straight as possible, reducing the resistance during the wind flow.

[0015] As a preferred technical solution, the air duct assembly further includes an air guide tube bracket, which is fixedly disposed in the inner cavity, and the air guide tube is laterally arranged and mounted on the air guide tube bracket.

[0016] The beneficial effect of the above preferred solution is that the air guide tube is fixedly mounted in the inner cavity of the test box by the air guide tube bracket, so that the air guide tube has less vibration during the air guiding process and is more stable.

[0017] As a preferred technical solution, the other end of the air guide tube is spaced apart from the air outlet; the test assembly also includes a sensor bracket, the wind speed sensor is a blade-type wind speed sensor, and the sensor bracket supports the blades of the wind speed sensor inside the other end of the air guide tube.

[0018] The beneficial effect of the above-mentioned preferred scheme is that: by spacing the other end of the air duct from the air outlet of the test box, an operable space is provided for installing a wind speed sensor; in addition, the blades of the wind speed sensor are supported inside the other end of the air duct, so that the blades can accurately sense the wind speed flowing in the air duct.

[0019] As a preferred technical solution, the test assembly further includes an electrical box support seat, which is arranged at the bottom of the inner cavity of the test box. The electrical box is fixedly arranged on the electrical box support seat and is electrically connected to the wind speed sensor.

[0020] The beneficial effect of the above preferred solution is that the electrical box is fixedly installed and electrically connected to the wind speed sensor, and the electrical box collects and processes the sensing signal of the wind speed sensor to obtain corresponding wind speed and / or air volume data.

[0021] As a preferred technical solution, the test assembly further includes an indicator light, which is arranged outside the test box and electrically connected to the electrical box.

[0022] The beneficial effect of the above preferred solution is that after the electrical box obtains the corresponding wind speed and / or air volume data, it makes an assessment and controls the indicator light to give a corresponding indication, for example, indicating whether the wind speed meets the standard through the indicator light.

[0023] As a preferred technical solution, the inner wall of the inner cavity is provided with sound insulation cotton.

[0024] The beneficial effect of the above preferred solution is that when the wind from the fresh air component to be tested is transmitted to the air guide tube, noise is inevitable. By setting up sound insulation cotton, the overflow of noise can be effectively blocked.

[0025] As a preferred technical solution, the air outlet is provided with a protective dustproof grille.

[0026] The beneficial effect of the above preferred solution is to prevent foreign matter and dust from entering the test box, and effectively protect the wind speed sensor, electrical box, etc.

[0027] A second aspect of the present invention provides a fresh air component testing system, comprising:

[0028] The fresh air component test device described above;

[0029] A host computer, communicatively connected to the electrical box;

[0030] The controller is communicatively connected to the host computer and is also electrically connected to the fresh air component to be tested.

[0031] The fresh air component testing system provided by the above solution has the following beneficial effects: through the communication connection between the host computer and the electrical box, information data of each test can be collected and recorded; at the same time, the host computer issues instructions to the controller, which can cause the controller to electronically adjust the fresh air component under test, thereby enabling wind speed and / or air volume testing of the fresh air component under test in different operating modes. The fresh air component testing system provided by this utility model has a higher degree of automation and more centralized and comprehensive data management. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of a fresh air component testing device provided in a specific embodiment of the present invention.

[0033] Figure 2 This is a schematic diagram of the connection between the fresh air component testing device provided in a specific embodiment of the present invention and the fresh air component to be tested.

[0034] Figure 3 This is a front view of the fresh air component testing device provided in a specific embodiment of the present invention.

[0035] Figure 4 This is a rear view of the fresh air component testing device provided in a specific embodiment of the present invention.

[0036] Figure 5 for Figure 3 The AA cross-sectional view of the fresh air component test device is shown.

[0037] Figure 6 for Figure 3 The BB cross-sectional view of the fresh air component test device is shown.

[0038] Figure 7 This is a diagram of the internal structure of the fresh air component testing device provided in a specific embodiment of the present utility model.

[0039] Figure 8 This is a structural diagram of the wind speed sensor and electrical box in the fresh air component testing device provided in the specific implementation manner of the utility model.

[0040] Figure 9 A top view of a fresh air component testing device provided in a specific embodiment of the present invention with sound insulation cotton added inside.

[0041] Figure 10 This is a rear view of the fresh air component testing device provided in a specific embodiment of the present invention with sound insulation cotton added inside.

[0042] Figure 11 This is a block diagram of the fresh air component testing system provided in a specific implementation manner of the present utility model. DETAILED DESCRIPTION

[0043] The technical solutions of the embodiments of the present invention are explained and illustrated below in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "front", "back" and the like, indicating directions or positional relationships, are all based on the directions or relative positional relationships shown in the drawings, and are intended to facilitate a clear description of the structure of the product or device, and are not intended to limit the actual directions of the product or device during production, use, sales, etc.

[0044] Furthermore, the terms "first" and "second" are used solely for purposes of distinction within the description and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0045] The specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings. Under the premise that there is no conflict between them, the technical features of each specific embodiment can be used interchangeably.

[0046] Combine Figures 1 to 6 As shown, the fresh air component testing device 100 provided in this embodiment includes: a testing box 10, an air duct component 20, a testing component 30 and a docking component 40.

[0047] The test chamber 10 has an air inlet 11, an air outlet 12, and an inner cavity 13. Specifically, the test chamber 10 is a six-sided enclosure, with the air inlet 11 and air outlet 12 defined on the front and rear surfaces, respectively. An air duct assembly 20 is disposed within the inner cavity 13 of the test chamber 10. This assembly includes an air duct 21, one end of which interfaces with the inner side of the air inlet 11 and the other end faces the air outlet. A test assembly 30 includes a wind speed sensor 31 and an electrical box 32. The wind speed sensor 31 is disposed within the air duct 21, and the electrical box 32 is electrically connected to the wind speed sensor 31.

[0048] The fresh air component test device 100 provided in the above embodiment adopts a modular structure, which is compact and stable, easy to move as a whole and suitable for various testing occasions; when testing, the fresh air inlet or exhaust outlet of the fresh air component 200 to be tested is connected with the air inlet of the fresh air component test device, and the fresh air inlet or exhaust outlet of the fresh air component 200 to be tested is connected with the air inlet of the fresh air component test device. Figure 2As shown; the air guide 21 conducts the wind blown out by the fresh air component 200 to be tested, and uses the wind speed sensor 31 to sense the wind speed, and then collects the sensing signal of the wind speed sensor 31 through the electrical box 32 to obtain the corresponding wind speed and / or air volume, thereby realizing the test of the fresh air component 200 to be tested.

[0049] Furthermore, one end of the docking member 40 is fixedly docked with the outside of the air inlet 11 of the test box 10, and the other end is provided with a bell mouth that sockets with the fresh air inlet or exhaust vent of the fresh air assembly 200 under test. During testing, the bell mouth provided on the other end of the docking member 40 can quickly and stably socket with the fresh air inlet or exhaust vent of the fresh air assembly 200 under test, preventing air leakage and ensuring good compatibility. This allows the air blown out by the fresh air assembly 200 under test to be efficiently introduced into the air inlet 11 and air guide duct 21 of the test box 10.

[0050] In this embodiment, the air guide tube 21 is a straight tube with one end connected to the air inlet 11 and the other end facing the air outlet. This allows the wind blown out by the fresh air component 200 to flow in a straight line as much as possible, thereby reducing the resistance during the wind flow.

[0051] Combine Figure 5 、 Figure 6 and Figure 7 As shown, the air duct assembly 21 further includes an air duct bracket 22, which is fixedly mounted in the inner cavity 13 of the test chamber 10. The air duct 21 is laterally mounted on the air duct bracket 22 and located in the middle of the inner cavity 13. The air duct bracket secures the air duct 21 in the middle of the inner cavity of the test chamber, making the air duct more stable during air guiding, reducing vibration and noise transmission.

[0052] In addition, the other end of the air duct 21 faces the air outlet 12 and is spaced apart from the air outlet 12, thereby providing operable space for installing the wind speed sensor 31. In this embodiment, the wind speed sensor 31 is a vane-type wind speed sensor, including a vane, a magnetic steel rotor, a sensing device, and a sensing device housing (vane-type wind speed sensors are prior art and will not be described in detail here). The test assembly 30 also includes a sensor bracket 33, which supports the vane of the wind speed sensor 31 within the other end of the air duct 21, with the vane facing the air inlet 11, so that the vane can accurately sense the wind speed flowing within the air duct 21.

[0053] See also Figure 7 and Figure 8As shown, the sensor bracket 33 includes a transverse support rod 331 and a longitudinal support rod 332. The sensor housing of the wind speed sensor 31 is connected to the middle of the transverse support rod 331, and the ends of the transverse support rod 331 are connected to the side walls of the other end of the air duct 21. The longitudinal support rod 332 provides longitudinal support for the sensor housing of the wind speed sensor 31. In this way, when the sensor housing of the wind speed sensor 31 is assembled to the other end of the air duct 21, the blades of the wind speed sensor 31 can be placed inside the other end of the air duct.

[0054] Continue to see Figure 7 As shown, one end of the air duct 21 is fixedly connected to the periphery of the air inlet 11; in addition, the air duct bracket 22 includes a first group of brackets 221 that longitudinally support the middle part of the air duct 21 and a second group of brackets 222 that longitudinally support the above-mentioned transverse support rod 331.

[0055] Combine Figure 7 and Figure 8 As shown, the test assembly 30 also includes an electrical box support 34, which is mounted at the bottom of the inner cavity 13 of the test box 10. The electrical box 32 is fixedly mounted on the electrical box support 34 and electrically connected to the wind speed sensor 31 (the electrical connection circuits are omitted in the figure of this embodiment). In the above embodiment, the electrical box 32 is fixedly mounted and electrically connected to the wind speed sensor 31. The electrical box 32 collects and processes the sensor signals of the wind speed sensor 31 to obtain corresponding wind speed and / or air volume data.

[0056] The wind speed is obtained as shown in Formula 1, where the blade coefficient is a constant whose value is determined by the propeller shape.

[0057] V 风速 =V 转子转速 *K 风叶 (Formula 1)

[0058] K 风叶 The wind speed coefficient is a physical property of the blade. Once the shape of the blade is determined, the wind speed coefficient is a constant. Assume that the performance of the wind speed sensor is as follows:

[0059] type parameter type parameter Sensing wind speed 0-15m / s Resolution 0.01m / s Systematic error ±2％ Starting wind speed 0.3m / s

[0060] Usually, the performance of wind speed sensors meets the testing requirements of fresh air components. In actual use, the specific model of the sensor can be changed according to the testing requirements and accuracy requirements of the specific air conditioner, which is more in line with cost control requirements.

[0061] During the test, some fresh air components require testing the air volume instead of the wind speed, which can be converted using Formula 2.

[0062] L 风量 =V 风速 *F*3600 (Formula 2)

[0063] The wind speed unit is m / s, the air volume unit is cubic meters per second, and F represents the ventilation area of ​​the air outlet (m 2 ), the ventilation area of ​​the air outlet is approximately equal to the inner diameter of the air guide tube 21.

[0064] Continue to see Figures 1 to 6 The test assembly 30 also includes an indicator light 35, which is disposed outside the test box 10 and is electrically connected to the electrical box 32. During testing, the electrical box 32 obtains the corresponding wind speed and / or air volume data, makes an assessment, and controls the indicator light 35 to provide a corresponding indication, for example, indicating whether the wind speed meets the standard through the indicator light 35.

[0065] Combine Figure 9 and Figure 10 As shown, sound insulation cotton 19 is provided on the inner wall of the inner cavity 13 of the test box 10. The main consideration for providing the sound insulation cotton 19 is that during the test, the wind blowing through the air duct 21 generates sound. When the sound waves pass through the multi-fiber structure of the sound insulation cotton 19, they will be reflected and collided multiple times inside the sound insulation cotton 19, converting the sound wave energy into heat energy, thereby reducing the noise during the entire test process.

[0066] In addition, in order to prevent foreign matter and dust from entering the test box and effectively protect the wind speed sensor, electrical box, etc., a protective dust grille 121 is provided at the air outlet 12.

[0067] See also Figure 11 As shown, this embodiment also provides a fresh air component testing system, including the fresh air component testing device 100 described above, and also including a host computer 300 and a controller 400. The host computer 300 is communicatively connected to the electrical box 32 of the fresh air component testing device 100; the controller 400 is communicatively connected to the host computer 300, and is also electrically connected to the fresh air component 200 to be tested.

[0068] Among them, through the communication connection between the host computer 300 and the electrical box 32, the information data of each detection can be collected and recorded; at the same time, by sending instructions to the controller 400 through the host computer 300, the controller 400 can perform electronic control adjustments on the fresh air component 200 to be tested, so that the wind speed and / or air volume of the fresh air component 200 to be tested can be tested separately in different working modes, with a higher degree of automation and more centralized and comprehensive data management.

[0069] The above disclosure is only a preferred embodiment of the present application, and certainly cannot be used to limit the scope of rights of the first application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A fresh air component testing device, characterized in that: include: The test box has an air inlet, an air outlet and an inner cavity; An air duct assembly is disposed in the inner cavity and includes an air guide tube with one end docked with the inner side of the air inlet and the other end facing the air outlet; The test assembly includes a wind speed sensor arranged in the air guide tube and an electrical box connected to the wind speed sensor.

2. The fresh air component testing device according to claim 1, characterized in that: It also includes a docking piece, one end of which is fixedly docked with the outer side of the air inlet, and the other end is provided with a bell mouth that is socketed with the fresh air outlet or exhaust outlet of the fresh air component to be tested.

3. The fresh air component testing device according to claim 1 or 2, characterized in that: The air inlet and the air outlet are respectively opened on two opposite surfaces of the test box; the air guide tube is a straight tube.

4. The fresh air component testing device according to claim 3, characterized in that: The air duct assembly further comprises an air guide tube bracket fixedly arranged in the inner cavity, and the air guide tube is laterally arranged and mounted on the air guide tube bracket.

5. The fresh air component testing device according to claim 4, characterized in that: The other end of the air guide tube is spaced apart from the air outlet; the test assembly also includes a sensor bracket, the wind speed sensor is a blade-type wind speed sensor, and the sensor bracket supports the blades of the wind speed sensor inside the other end of the air guide tube.

6. The fresh air component testing device according to claim 1, characterized in that: The test assembly further includes an electrical box support seat, which is arranged at the bottom of the inner cavity of the test box. The electrical box is fixedly arranged on the electrical box support seat and is electrically connected to the wind speed sensor.

7. The fresh air component testing device according to claim 1, characterized in that: The test assembly further includes an indicator light, which is disposed outside the test box and is electrically connected to the electrical box.

8. The fresh air component testing device according to claim 1, characterized in that: The inner wall of the inner cavity is provided with sound insulation cotton.

9. The fresh air component testing device according to claim 1, characterized in that: The air outlet is provided with a protective dustproof grille.

10. A fresh air component testing system, characterized in that: include: The fresh air component testing device according to any one of claims 1 to 9; A host computer, communicatively connected to the electrical box; The controller is communicatively connected to the host computer and is also electrically connected to the fresh air component to be tested.

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