A hybridization test chamber

Abstract

The utility model relates to test box technical field, and disclose a hybrid test box, include: test box body, the air exchange structure sets up in test box body top for sending into fresh air to test box body, the air exchange structure includes fan, connects the mouth and mixing pipe, connects the mouth with the exhaust port fixed connection of fan, the mixing pipe with the port fixed connection of connecting the mouth, the mixing pipe and test box body fixed mounting, through solenoid valve control corresponding manifold and mixing pipe intercommunication, under the venturi effect, the air in manifold can be inhaled into mixing pipe, and then through corresponding solenval can control the purpose of sending into cold gas, hot gas and water mist into mixing pipe, after the guidance mixing of spoiler, cold hot fog can be mixed with air even after sending into test box body, and then can realize the quick adjustment to the air in test box body, adapt the growth demand of rice, the whole simple structure, the design of external maintenance and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a hybridization test chamber. Background Technology

[0002] An incubator is a container used for cultivating hybrid rice and is a commonly used device for organic rice seedling cultivation.

[0003] A search revealed a prior art incubator for hybrid rice experiments (publication number: CN208480373U), comprising a base, a first cavity within which a motor is fixedly mounted, a gearbox at the motor's output end rotatably connected to the motor, a shell on the upper surface of the base fixedly connected to the base, a fan detachably connected to the shell on its inner wall, a protective box fixedly connected to the shell on its right surface, an inner chamber fixedly connected to the shell, a humidity controller detachably connected to the inner chamber on its upper inner surface, and a temperature controller detachably connected to the inner chamber on its right side.

[0004] In the existing technology, the air quality index is controlled by setting humidification and temperature control components at the bottom of the cultivation box. However, the built-in design can affect the crop's growth environment and is easily damaged by the humid air inside. It is also inconvenient for later maintenance and repair, and there is room for optimization.

[0005] Therefore, we propose a hybridization test chamber. Utility Model Content

[0006] The present invention mainly addresses the technical problem that the components controlling the air index affect crop growth and are inconvenient to maintain, and provides a hybridization test chamber.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a hybridization test chamber, comprising: The test chamber body has an internal tray for placement and a ventilation window. A ventilation structure is installed at the top of the test chamber body to supply fresh air into the test chamber body. The ventilation structure includes a fan, a nozzle, and a mixing pipe. The nozzle is fixedly connected to the exhaust port of the fan. The mixing pipe is fixedly connected to the port of the nozzle. The mixing pipe is fixedly installed in the test chamber body. An exhaust pipe is fixedly installed inside the test chamber body. The exhaust pipe is fixedly connected to and communicates with the mixing pipe. An air treatment assembly, located above the test chamber body, is used to supply treated air into the mixing pipe. The air treatment assembly has three sets, and the air intake path of the mixing pipe can be adjusted by the three sets of treatment assemblies.

[0008] In a preferred embodiment of this utility model, the nozzle is funnel-shaped, with the larger end of the nozzle fixed to the exhaust port of the fan via a flange, and the mixing pipe welded to the smaller end of the nozzle, the inner diameters of the mixing pipe and the smaller end of the nozzle being equal.

[0009] In a preferred embodiment of this utility model, the air handling assembly includes an external housing and a manifold, wherein the manifold is connected to the external housing and is fixedly connected to a mixing pipe.

[0010] In a preferred embodiment of this utility model, the mixing pipe has several holes for the manifold to enter, the manifold passes through the holes and enters the mixing pipe, and the contact position between the manifold and the mixing pipe is fully welded.

[0011] In a preferred embodiment of this utility model, the outer box is hollow inside, and an air inlet is provided on the top of the outer box.

[0012] In a preferred embodiment of this utility model, the air treatment assembly further includes a solenoid valve. A solenoid valve is fixedly installed at the upper port of each manifold, and the inlet of the solenoid valve is fixedly connected and communicates with the corresponding external box through a pipe.

[0013] In a preferred embodiment of this invention, the ventilation structure further includes a baffle plate, and the baffle plate is fixedly installed inside the mixing tube. The baffle plate can mix and shear the incoming air.

[0014] In a preferred embodiment of this utility model, the baffle is a spiral plate, which is fixedly installed on the inner wall of the mixing tube and extends radially, and the width of the baffle is smaller than the inner radius of the mixing tube cavity.

[0015] This invention provides a hybridization test chamber. It has the following beneficial effects: 1. This hybridization test chamber connects a manifold and a mixing pipe via a solenoid valve. Under the Venturi effect, air from the manifold is drawn into the mixing pipe. The solenoid valve then controls the injection of cold air, hot air, and water mist into the mixing pipe. After being guided and mixed by a baffle plate, the cold and hot mist are evenly mixed with the air before being introduced into the test chamber. This allows for rapid adjustment of the air within the chamber to meet the growth needs of rice. The overall structure is simple, and the external design facilitates inspection and maintenance. It eliminates direct interference from radiant heating and water splashing from the atomizer to the crop's microenvironment, providing a more stable and purer growth space for hybridization experiments. It achieves high-precision, overshoot-free continuous adjustment of temperature and humidity, overcoming the large fluctuations inherent in traditional on / off control systems.

[0016] 2. This hybridization test chamber, by incorporating baffles, ensures that air flowing through the mixing tube is uniformly mixed through the shearing action of multiple baffles. This guarantees smooth airflow through the mixing tube, suppresses turbulence formation, and ensures that air drawn in from the external chamber is uniformly mixed within the mixing tube. This allows airflows from different manifolds with significant temperature and humidity differences to be rapidly and uniformly mixed within milliseconds. This avoids the "temperature stratification" and "humidity unevenness" phenomena commonly found in traditional methods, resulting in extremely high temperature and humidity consistency throughout the chamber, fundamentally guaranteeing the reliability and repeatability of experimental data.

[0017] 3. This hybridization test chamber adopts a modular design concept, with three independently structured external functional chambers. Users can flexibly select or quickly replace different functional modules (such as heaters of different power and atomizers of different mist production rates) according to the experimental needs of different rice varieties, greatly expanding the application range and flexibility of the equipment. Attached Figure Description

[0018] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a three-dimensional view of the ventilation structure of this utility model; Figure 4 This is a perspective view of the air handling component and ventilation structure of this utility model; Figure 5 This is a partial cross-sectional view of the mixing tube of this utility model.

[0019] Legend: 10. Test chamber body; 11. Tray; 20. Fan; 21. Connector; 22. Mixing pipe; 23. External chamber; 24. Manifold; 25. Solenoid valve; 30. Baffle plate. Detailed Implementation

[0020] A hybridization test chamber, such as Figure 1 , Figure 2 , Figure 3 As shown, it includes: The test chamber body 10 has a tray 11 for placement inside and a ventilation window. A ventilation structure is installed at the top of the test chamber body 10 to supply fresh air into the test chamber body 10. The ventilation structure includes a fan 20, a nozzle 21, and a mixing pipe 22. The nozzle 21 is fixedly connected to the exhaust port of the fan 20, and the mixing pipe 22 is fixedly connected to the port of the nozzle 21. The mixing pipe 22 is fixedly installed in the test chamber body 10. An exhaust pipe is fixedly installed inside the test chamber body 10. The exhaust pipe is fixedly connected to and communicates with the mixing pipe 22. The nozzle 21 is funnel-shaped. The larger port of the nozzle 21 is fixed to the exhaust port of the fan 20 through a flange. The mixing pipe 22 is welded to the smaller port of the nozzle 21. The inner diameters of the mixing pipe 22 and the smaller port of the nozzle 21 are equal. In this scheme, a bundled air inlet pipe is formed by the nozzle 21 and the mixing pipe 22. Fresh air from the outside is sent into the mixing pipe 22 by the fan 20 and then evenly sent into the test chamber body 10 through multiple exhaust pipes, so as to realize the air exchange in the test chamber body 10 and ensure the air quality of the crop growth environment.

[0021] like Figure 5 As shown, the ventilation structure also includes a baffle plate 30. The baffle plate 30 is fixedly installed inside the mixing tube 22. The baffle plate 30 can mix and shear the incoming air. The baffle plate 30 is a spiral plate. The baffle plate 30 is fixedly installed on the inner wall of the mixing tube 22 and extends radially. The width of the baffle plate 30 is smaller than the inner radius of the mixing tube 22. By setting up baffles 30, the air flowing through the mixing pipe 22 will be uniformly mixed by the shearing of multiple baffles 30, ensuring the smooth flow of air through the mixing pipe 22 and suppressing the formation of turbulence.

[0022] like Figure 2 , Figure 3 and Figure 4 As shown, the air treatment assembly is located above the test chamber body 10 and is used to send treated air into the mixing pipe 22. The air treatment assembly has three sets, and the three sets of treatment assemblies can adjust the air intake path of the mixing pipe 22. The air preparation unit includes an external housing 23 and a manifold 24. The manifold 24 is connected to the external housing 23 and is fixedly connected to a mixing pipe 22. The mixing pipe 22 has several holes for the manifold 24 to enter. The manifold 24 passes through the holes and enters the mixing pipe 22. The contact points between the manifold 24 and the mixing pipe 22 are fully welded. The external housing 23 is hollow inside and has an air inlet at the top. The air preparation unit also includes a solenoid valve 25. A solenoid valve 25 is fixedly installed at the upper port of each manifold 24. The inlet of the solenoid valve 25 is fixedly connected to and communicates with the corresponding external housing 23 through a pipe.

[0023] In this design, the three external boxes 23 are named A, B, and C. A contains a heating rod, B contains an atomizer and stores water, and C has a cooling fin fixedly mounted on its side wall, with the cold end of the cooling fin inside C and the hot end outside. Through the design of these three external boxes 23, in conjunction with manifolds 24 and solenoid valves 25, the solenoid valves 25 control the connection between the corresponding manifolds 24 and the mixing pipe 22. Under the Venturi effect, air in the manifolds 24 can be drawn into the mixing pipe 22, and the corresponding solenoid valves 25 can then control the supply of cold and hot air into the mixing pipe 22. The purpose of water mist is to guide and mix the hot and cold mist with the air after passing through the baffle plate 30, and then send it into the test chamber body 10. This enables rapid adjustment of the air inside the test chamber body 10 to meet the growth needs of rice. The overall structure is simple and the external design facilitates inspection and maintenance. Temperature and humidity sensors need to be installed inside the test chamber body 10, and a controller is installed outside the test chamber body 10. The cooling chip and heating rod form a closed loop connection with the controller through the temperature sensor, and the atomizer forms a closed loop connection with the controller through the humidity sensor.

[0024] The working principle of this utility model is as follows: Three external boxes 23 are named A, B and C respectively. A is equipped with an electric heating rod, B is equipped with an atomizer and stores water, and C is equipped with a cooling plate fixed on its side wall. The cold end of the cooling plate is located inside C and the hot end is located outside C. Through the design of the three external boxes 23, in conjunction with the manifold 24 and the solenoid valve 25, the solenoid valve 25 controls the connection between the corresponding manifold 24 and the mixing pipe 22. Under the Venturi effect, the air in the manifold 24 can be drawn into the mixing pipe 22. Then, the corresponding solenoid valve 25 can control the injection of cold air, hot air and water mist into the mixing pipe 22. After being guided and mixed by the baffle 30, the cold and hot mist can be evenly mixed with the air and then sent into the test chamber body 10, so as to achieve precise control of the air index in the test chamber 10. The nozzle 21 is a tapered tube with a large-diameter end diameter D1 that matches the outlet diameter of the fan 20 and a small-diameter end diameter D2 that matches the inner diameter of the mixing pipe 22, and D1 / D2 ≥ 1.5. The cone angle α of the nozzle 21 is 15°±2°. This structure ensures that the airflow can generate sufficient velocity and negative pressure at the small-diameter end of the nozzle 21, with a vacuum degree of not less than -5kPa, which can reliably draw gas from the manifold 24. A has a spiral-shaped finned electric heating tube with a power of 300W inside, and ventilation holes are opened on the side wall of the box to form a convection channel. B has an ultrasonic atomizer installed at the bottom, with a volume of 2L, and a breathable splash-proof net on the top of the box. The C-side wall is fitted with a semiconductor cooling chip (TEC) with a cooling power of ≥50W. The cold end of the cooling chip is equipped with aluminum heat dissipation fins, while the hot end is located outside the enclosure and is equipped with a cooling fan.

[0025] The controller has a built-in PID control algorithm. When the temperature sensor detects that the temperature of the test chamber 10 is lower than the set value, the controller proportionally increases the opening of the solenoid valve 25 leading to the external chamber A and decreases or closes the solenoid valve leading to the external chamber C. Conversely, when the humidity is insufficient, the controller pulses to open the solenoid valve 25 leading to the external chamber B. The humidification amount is precisely adjusted by controlling the pulse width to prevent overshoot. The number of the turbulence-dispersing plates 30 is three, which are equidistantly distributed along the axial direction of the mixing tube 22. Their helix angle is 45°, and the rotation direction of adjacent turbulence-dispersing plates 30 is opposite. This arrangement can repeatedly cut and rotate the airflow in opposite directions, so that the cold, hot and humid air can be fully and uniformly mixed in a very short time, and the temperature uniformity of the airflow sent into the test chamber body is improved.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hybridization test chamber, characterized in that, include: The test chamber body (10) is provided with a tray (11) for placement inside the test chamber body (10), and the test chamber body (10) has a ventilation window; A ventilation structure is installed on the top of the test chamber body (10) to supply fresh air into the test chamber body (10). The ventilation structure includes a fan (20), a nozzle (21) and a mixing pipe (22). The nozzle (21) is fixedly connected to the exhaust port of the fan (20). The mixing pipe (22) is fixedly connected to the port of the nozzle (21). The mixing pipe (22) is fixedly installed in the test chamber body (10). An exhaust pipe is fixedly provided inside the test chamber body (10). The exhaust pipe is fixedly connected to and communicates with the mixing pipe (22). An air treatment assembly is installed above the test chamber body (10) to supply treated air into the mixing tube (22). The air treatment assembly has three sets, and the three sets of treatment assemblies can adjust the air intake path of the mixing tube (22).

2. The hybridization test chamber according to claim 1, characterized in that: The nozzle (21) is funnel-shaped. The larger port of the nozzle (21) is fixed to the exhaust port of the fan (20) through a flange. The mixing pipe (22) is welded and fixed to the smaller port of the nozzle (21). The inner diameter of the mixing pipe (22) and the smaller port of the nozzle (21) are equal.

3. The hybridization test chamber according to claim 1, characterized in that: The air handling unit includes an external housing (23) and a manifold (24), the manifold (24) being connected to the external housing (23) and fixedly connected to the mixing pipe (22).

4. The hybridization test chamber according to claim 3, characterized in that: The mixing pipe (22) has several holes for the manifold (24) to enter. The manifold (24) passes through the holes and enters the mixing pipe (22). The contact position between the manifold (24) and the mixing pipe (22) is fully welded.

5. The hybridization test chamber according to claim 3, characterized in that: The outer box (23) is hollow inside, and an air inlet is provided on the top of the outer box (23).

6. The hybridization test chamber according to claim 3, characterized in that: The air treatment assembly also includes a solenoid valve (25). Each manifold (24) has a solenoid valve (25) fixedly installed at its upper port. The inlet of the solenoid valve (25) is fixedly connected to and communicates with the corresponding external box (23) through a pipe.

7. The hybridization test chamber according to claim 1, characterized in that: The ventilation structure also includes a baffle plate (30), which is fixedly installed inside the mixing tube (22). The baffle plate (30) can mix and shear the incoming air.

8. The hybridization test chamber according to claim 7, characterized in that: The baffle plate (30) is a spiral plate. The baffle plate (30) is fixedly installed on the inner wall of the mixing tube (22) and extends radially. The width of the baffle plate (30) is smaller than the inner radius of the mixing tube (22).

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