A portable air negative ion concentration detector
By introducing a windproof tube and inner cylinder structure into the portable air negative ion detector, combined with a fan blade assembly, the measurement error problem caused by direct airflow is solved, achieving higher detection accuracy and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN ZEYUAN ECOLOGICAL ENVIRONMENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-08-04
AI Technical Summary
When existing portable air negative ion detectors are used outdoors, the detection sensor is directly exposed to the side wall of the machine, which causes the airflow to blow directly on it, resulting in abnormal fluctuations or distortions in the measurement values and affecting the detection accuracy.
The device employs a windproof casing and inner cylinder structure. Through the design of ventilation holes and connecting holes, combined with the fan blade assembly, it prevents airflow from directly impacting the detection end. The fan blades are used to judge the airflow situation, and the windproof casing reduces airflow disturbance, thereby reducing measurement errors.
It effectively reduces the impact of direct airflow on detection accuracy, improves the stability and accuracy of measurements, and can be sealed to prevent external contamination when not in use, ensuring the cleanliness of the equipment.
Smart Images
Figure CN224594605U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of environmental monitoring technology, and in particular to a portable air negative ion concentration detector. Background Technology
[0002] Negative air ions have positive effects on human health, purifying harmful substances in the air and improving bodily functions. However, in existing portable negative air ion detectors used outdoors, the sensor is typically directly exposed to the side wall of the device. When airflow blows directly onto the sensor, it can cause abnormal fluctuations or distortions in the measured values, affecting detection accuracy. This limitation restricts the reliability of the equipment in outdoor environmental monitoring. Utility Model Content
[0003] The purpose of this invention is to address the shortcomings of existing technologies where the detection end is directly installed on the side wall of the machine, causing the direct airflow to impact the detection sensor, resulting in fluctuations or even distortion in the measured values. Therefore, this invention proposes a portable air negative ion concentration detector.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A portable air negative ion concentration detector includes a main body with a detection port on the top.
[0006] A windproof tube is fixedly connected to the top of the instrument body and surrounds the detection port. The windproof tube has multiple ventilation holes on its peripheral wall.
[0007] The inner cylinder is axially slidably disposed along the inner wall of the windproof duct, and the peripheral wall of the inner cylinder is provided with a connecting hole corresponding to the ventilation hole;
[0008] The fan blade assembly includes a bracket, a rotating shaft, and fan blades. The bracket is fixed to the top of the inner cylinder, the rotating shaft is vertically rotatably connected to the bracket, and multiple fan blades are fixed to the outer wall of the rotating shaft.
[0009] The inner cylinder has a first position and a second position:
[0010] In the first position, the connecting hole and the ventilation hole are misaligned, and the fan blades are housed inside the windproof tube;
[0011] In the second position, the connecting hole and the ventilation hole are aligned and connected, the fan blade protrudes from the top of the windproof tube, and the external airflow enters the detection port through the ventilation hole and the connecting hole. The fan blade rotates in response to the airflow to indicate whether ventilation is present.
[0012] In one possible design, a top cover and multiple support rods are also included, with the bottom end of the support rods fixed to the edge of the bracket and the top end fixed to the top cover, and the top end of the rotating shaft rotatably connected to the bottom of the top cover.
[0013] In one possible design, a single tension spring is provided between the top inner wall of the windproof duct and the top of the inner cylinder. The two ends of the tension spring are connected to the top inner wall of the windproof duct and the top of the inner cylinder respectively via hooks. The tension spring normally drives the inner cylinder to move to a second position.
[0014] In one possible design, a locking mechanism is also included, which comprises:
[0015] A chute is installed at the top of the windproof duct;
[0016] The insert plate is slidably installed along the slide groove. One end of the plate engages with the No. 1 slot on the outer wall of the top cover, and the other end engages with the No. 2 slot on the side wall of the inner cylinder.
[0017] The compression spring has its two ends abutting against one side of the insert plate and the inner wall of the slide groove via spring seats, respectively, driving the insert plate to remain in the locked state.
[0018] In one possible design, the top of the insert plate is fixed to an anti-slip plate, which is exposed at the top of the windproof duct.
[0019] In one possible design, the plane of rotation of the fan blades is parallel to the top end face of the windproof casing.
[0020] In this application, during actual use, the anti-slip plate is slid outwards, causing the insert plate to move. When one end of the insert plate disengages from the first slot, the top cover and the connected inner cylinder and bracket are released from their fixed state. At this time, the inner cylinder is moved upwards by the tension spring, connecting the connecting hole and the corresponding ventilation hole. The fan blades also move to the outside of the windproof tube. When the anti-slip plate is released, the insert plate is reset by the force of the compression spring, causing the other end of the insert plate to be inserted into the second slot of the inner cylinder, thus fixing it in place. At this time, the detector can be held to check whether the fan blades above are rotating, thereby determining whether there is a blowing situation. The windproof tube will block any possible direct airflow, preventing the airflow from directly impacting the detection end, thereby reducing measurement errors caused by airflow disturbance.
[0021] In this utility model, the portable air negative ion concentration detector can avoid direct airflow by using a windproof tube, thereby reducing the impact of wind speed on detection accuracy.
[0022] In this utility model, the portable air negative ion concentration detector can be used to observe the ventilation of the surrounding environment through the fan blades.
[0023] In this invention, during use, the measurement fluctuations caused by excessive airflow can be reduced, and the fan blades can be observed independently. Furthermore, when carrying or storing the device, it can be sealed to prevent external contamination. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the main structure of a portable air negative ion concentration detector proposed in this utility model;
[0025] Figure 2 This is a cross-sectional structural diagram of a portable air negative ion concentration detector proposed in this utility model;
[0026] Figure 3 This utility model Figure 2 Enlarged view of the structure of part A in the middle.
[0027] In the diagram: 1. Main body of the instrument; 2. Windproof tube; 3. Ventilation hole; 4. Inner cylinder; 5. Connecting hole; 6. Bracket; 7. Support rod; 8. Rotating shaft; 9. Fan blade; 10. Top cover; 11. Slide groove; 12. Insert plate; 13. Compression spring; 14. Anti-slip plate; 15. No. 1 slot; 16. Tension spring. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] In one embodiment: Refer to Figure 1-2 A detection instrument, comprising: a detection instrument, a windproof duct 2, an inner duct 4, and a fan blade 9.
[0030] The instrument body 1 integrates a display screen and operation buttons on its surface, with a detection port on the top. The specific model is WTS-2500 negative ion detector. A windproof casing 2 is fixed to the top of the instrument body 1, with multiple circular ventilation holes 3 evenly distributed on its surface. An inner cylinder 4 slides along the inner wall of the windproof casing 2, with connecting holes 5 on its surface having the same diameter and spacing as the ventilation holes 3. A support 6 is welded to the top of the inner wall of the inner cylinder 4. The bottom end of a rotating shaft 8 is rotatably connected to the center hole of the support 6 via a bearing. Four curved fan blades 9 are evenly distributed on the outer wall of the rotating shaft 8. The fan blades 9 can adopt various shapes: for example, curved thin-blade type, rectangular flat plate type, streamlined fin type, or propeller-type airfoil design. Curved thin-blade type improves low-wind-speed response, rectangular flat plate type facilitates mass production, streamlined fin type reduces turbulence noise, and propeller type is suitable for directional airflow detection. The fan blade material is preferably ABS engineering plastic or carbon fiber composite material, with a thickness controlled between 0.5-1.2mm to balance strength and inertia.
[0031] Multiple support rods 7 are fixedly installed on the top edge of the bracket 6. The top ends of the support rods 7 are fixed to the bottom of the top cover 10, and the top end of the rotating shaft 8 is also rotatably connected to the bottom of the top cover 10 via the rotating shaft. A tension spring 16 is attached between the top inner wall of the windproof duct 2 and the top of the inner cylinder 4.
[0032] Specifically, when the inner cylinder 4 is released from its fixed position, the inner cylinder 4 will move upward under the tension spring 16, connecting the connecting hole 5 and the corresponding ventilation hole 3. The fan blade 9 will also move to the outside of the windproof tube 2. At this time, the detector can be held to check whether the fan blade 9 is rotating to determine whether there is a blowing situation. The windproof tube 2 will block any possible direct airflow, preventing the airflow from directly impacting the detection end, thereby reducing the measurement error caused by airflow disturbance.
[0033] Air will enter the inner cylinder 4 through the ventilation hole 3 of the windproof duct 2, thereby avoiding the airflow directly impacting the detection end, thus reducing the measurement error caused by airflow disturbance and avoiding turbulence interference. The ion collector built into the detector adsorbs negative ions in the air through an electric field. The generated microcurrent is processed by the signal amplification circuit and the concentration value is displayed on the screen in real time.
[0034] This application can be used in the field of environmental monitoring, or in other fields applicable to this application.
[0035] In another embodiment: A portable air negative ion concentration detector, applied in the field of environmental monitoring, is provided with a locking mechanism for fixing the top cover 10 and the inner cylinder 4. The locking mechanism includes an insert plate 12, and a transverse sliding groove 11 is opened on the top of the windproof tube 2. The insert plate 12 is slidably disposed inside the sliding groove 11. A first slot 15 is opened on the outer wall of the top cover 10, and a second slot is opened on the side wall of the inner cylinder 4. Both ends of the insert plate 12 penetrate the windproof tube 2 and cooperate with the first slot 15 and the second slot respectively. A compression spring 13 is provided in the sliding groove 11, and the two ends of the compression spring 13 abut against the side wall of the insert plate 12 and the end face of the sliding groove 11 respectively through spring seats.
[0036] Specifically, one end of the insert plate 12 is inserted into the first slot 15 of the top cover 10 to cover the top of the windproof tube 2 and confine other components inside the windproof tube 2. At the same time, the connecting hole 5 on the outer wall of the inner tube 4 is staggered from the ventilation hole 3 to achieve a sealing effect and prevent the detection port from being affected by the outside.
[0037] When needed, the anti-slip plate 14, which is fixed on the top of the insert plate 12, is slid outward, so that one end of the insert plate 12 is disengaged from the first slot 15, thereby releasing the top cover 10 and the connected inner cylinder 4 and bracket 6 from their fixed state. At this time, the inner cylinder 4 will be moved upward by the tension spring 16, so that the connecting hole 5 and the corresponding ventilation hole 3 are connected, and the fan blade 9 will also move to the outside of the windproof tube 2. Then, the anti-slip plate 14 is released, and the insert plate 12 will be reset by the force of the compression spring 13, so that the other end of the insert plate 12 is inserted into the second slot of the inner cylinder 4, thereby fixing it.
[0038] Under normal conditions, the tension spring 16 keeps the inner cylinder 4 in a low position, the connecting hole 5 and the ventilation hole 3 are completely misaligned, and the windproof duct 2 is in a closed state.
[0039] Airflow drives the fan blades 9 to rotate, which is used to detect whether there is a phenomenon of direct airflow.
[0040] However, as is well known to those skilled in the art, the working principle and wiring method of the detector are commonplace and are all conventional methods or common knowledge. They will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.
[0041] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.
[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A portable air negative ion concentration detector, characterized in that, include: The instrument body (1) has a detection port on its top; A windproof tube (2) is fixedly connected to the top of the instrument body (1) and surrounds the detection port. The windproof tube (2) has multiple ventilation holes (3) on its peripheral wall. The inner cylinder (4) is axially slidably disposed along the inner wall of the windproof duct (2), and the peripheral wall of the inner cylinder (4) is provided with a connecting hole (5) corresponding to the ventilation hole (3); The fan blade assembly includes a bracket (6), a rotating shaft (8), and fan blades (9). The bracket (6) is fixed to the top of the inner cylinder (4), the rotating shaft (8) is vertically rotatably connected to the bracket (6), and a plurality of fan blades (9) are fixed to the outer wall of the rotating shaft (8). The inner cylinder (4) has a first position and a second position: In the first position, the connecting hole (5) is misaligned with the ventilation hole (3), and the fan blade (9) is housed inside the windproof tube (2); In the second position, the connecting hole (5) is aligned and connected with the ventilation hole (3), the fan blade (9) protrudes from the top of the windproof tube (2), and the external airflow enters the detection port through the ventilation hole (3) and the connecting hole (5). The fan blade (9) rotates in response to the airflow to indicate whether ventilation is present.
2. The portable air negative ion concentration detector according to claim 1, characterized in that, It also includes a top cover (10) and multiple support rods (7), the bottom end of which is fixed to the edge of the bracket (6), and the top end of which is fixed to the top cover (10). The top end of the rotating shaft (8) is rotatably connected to the bottom of the top cover (10).
3. A portable air negative ion concentration detector according to claim 2, characterized in that, The same tension spring (16) is provided between the top inner wall of the windproof duct (2) and the top of the inner cylinder (4). The two ends of the tension spring (16) are connected to the top inner wall of the windproof duct (2) and the top of the inner cylinder (4) respectively by hooks. The tension spring (16) normally drives the inner cylinder (4) to move to the second position.
4. A portable air negative ion concentration detector according to claim 3, characterized in that, It also includes locking mechanisms, which include: A chute (11) is provided at the top of the windproof duct (2); The insert plate (12) is slidably arranged along the slide groove (11), with one end engaged with the first slot (15) opened on the outer wall of the top cover (10), and the other end engaged with the second slot opened on the side wall of the inner cylinder (4). The compression spring (13) has its two ends abutting against one side of the insert plate (12) and the inner wall of one side of the slide groove (11) respectively through the spring seat, driving the insert plate (12) to remain in the locked state.
5. A portable air negative ion concentration detector according to claim 4, characterized in that, The top of the insert plate (12) is fixed with the anti-slip plate (14), which is exposed on the top of the windproof duct (2).
6. A portable air negative ion concentration detector according to claim 1, characterized in that, The plane of rotation of the fan blade (9) is parallel to the top end face of the windproof tube (2).