光合作用检测箱换气装置
By designing a ventilation device for the photosynthesis detection chamber, the problem of gas non-uniformity inside the chamber was solved, achieving uniform gas mixing and environmental restoration, thus ensuring sampling accuracy and the reconstruction of the natural environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGHEGU (CHONGQING) INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-17
AI Technical Summary
In the detection of photosynthesis in plant communities, the uneven distribution of gases inside the detection chamber leads to inaccurate sampling, and it is difficult to restore the natural air environment after the detection is completed.
A ventilation device for a photosynthesis detection chamber was designed, comprising an inner ventilation shell, a T-shaped intermediate shell, an outer ventilation shell, a shaft tube, and a fan. The device achieves uniform mixing of gases and gas exchange between the inside and outside of the chamber through internal and external passages, and controls gas flow using a port opening and closing device.
It achieves uniformity of gas inside the detection chamber, ensures sampling accuracy, and can restore the natural air environment after the detection is completed.
Smart Images
Figure CN224518682U_ABST
Abstract
Claims
1. A photosynthesis detection chamber gas exchange apparatus, characterized by: It includes an inner ventilation shell, a T-shaped intermediate shell, an outer ventilation shell, a shaft tube, and a fan. The front end of the T-shaped intermediate shell connects to the inner ventilation shell, and the rear end of the T-shaped intermediate shell connects to the outer ventilation shell. The rear end of the T-shaped intermediate shell is also provided with a partition ring, which isolates the inner cavity of the outer ventilation shell from the inner cavity of the T-shaped intermediate shell; the front end of the shaft tube is connected to the bottom of the inner cavity of the inner ventilation shell, the rear end of the shaft tube is connected to the inner hole of the partition ring, and the fan is installed inside the shaft tube. The inner cavity sidewall of the ventilation shell is provided with a first group of vents, the bottom of the ventilation shell is provided with a second group of vents opposite to the front end of the shaft tube, the rear end sidewall of the shaft tube is provided with a vent, and the outer shell wall of the ventilation shell is provided with a third group of vents. The first group of vents, the inner cavity of the ventilation shell, the vent on the rear end sidewall of the shaft tube, the inner cavity of the shaft tube, and the second group of vents constitute an internal ventilation passage. The third group of vents, the rear end of the shaft tube, the inner cavity of the shaft tube, and the second group of vents constitute an external ventilation passage. The ventilation device of the photosynthesis detection box also includes a port opening and closing device for controlling the opening and closing of the rear port of the shaft tube.
2. The photosynthesis detection box ventilator of claim 1, wherein: The port opening and closing device includes a base plate fixed on a spacer ring, a guide rod vertically fixed on the base plate, a top plate fixed on the guide rod, a motor mounted on the top plate, a screw rod connected to the motor rotor, and a partition plate that slides with the guide rod to close the rear port of the shaft tube. The partition plate is located between the base plate and the top plate, the screw rod is threadedly connected to the partition plate, and a sealing ring that mates with the partition plate is provided on the base plate.
3. The photosynthesis detection box ventilator of claim 2, wherein: The port opening and closing device also includes a sensor installed on the top plate for detecting the displacement of the partition position.
4. The photosynthesis detection box ventilator of claim 1, wherein: A sealing ring and a connecting hole are provided on the outer surface of the T-shaped intermediate shell that connects to the photosynthesis detection box. The connecting hole is located inside the sealing ring.
5. The photosynthesis detection box ventilator of claim 1, wherein: The second group of vents is arranged radially.
6. The photosynthesis detection box ventilator of claim 1, wherein: The inner ventilation shell is cylindrical, and the first set of ventilation holes is evenly distributed along the circumference of the inner ventilation shell; the outer ventilation shell is tubular, and the third set of ventilation holes is evenly distributed along the circumference of the outer ventilation shell.
7. The photosynthesis detection box ventilating device according to claim 6, characterized in that: An end cap is provided at the rear end of the external ventilation shell of the chamber.