Constant temperature and humidity experiment box

Abstract

When a user uses the constant-temperature and constant-humidity experiment box, an experiment sample is placed on a placement frame, a fan sucks air in a test box body into a box body through an air inlet pipe, water temperature is controlled by utilizing an electric heating pipe and a first temperature sensor, and under the action of the fan, the constant-temperature and constant-humidity experiment box is formed. Air in the test box body enters the box body through the air inlet pipe, gas is heated and humidified through water, exhausted from the exhaust pipe and returned into the test box body, the air is heated and humidified through the water in the box body, and air exhausted from the exhaust pipe is uniformly blown into the test box body through the through holes. A second temperature sensor is used for monitoring the temperature in the placing frame, a fan continuously operates, air in the test box body is internally circulated, the humidity of the air in the test box body is monitored through a humidity sensor, when the humidity exceeds the required humidity, a drying machine is started, and the circulating air is dried by the drying machine; therefore, the purpose of controlling humidity is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a constant temperature and humidity test box. Background Art

[0002] Constant temperature and humidity test chamber can be used to evaluate and determine the temperature and humidity cycle changes of electrical and electronic products or materials. Constant temperature and humidity test chamber is used for aerospace products, information electronic instruments, materials, electrical and electronic products, various electronic components to test their performance indicators in high temperature or humid environment.

[0003] When doing biochemical experiments in laboratories, sometimes it is necessary to ensure that the experiments are carried out in a constant temperature and humidity environment to avoid the influence of temperature and humidity on the experimental results. At present, the existing constant temperature and humidity chambers for experiments usually use heating wires or heating lamps for heating, which will cause uneven heating near the heating mechanism and far away from the heating mechanism inside the chamber, causing experimental errors. Utility Model Content

[0004] In view of the shortcomings of the prior art, a constant temperature and humidity test box is disclosed, which includes a test box body, a box body is fixed on the upper wall of the test box body, the test box body and the box body are connected through an air inlet pipe and an air exhaust pipe respectively, a fan is arranged on the air inlet pipe, and a one-way valve is arranged at the connecting end of the air inlet pipe and the box body;

[0005] The lower wall of the box is provided with an electric heating tube, and the upper wall of the box is provided with a first temperature sensor;

[0006] A placement rack is provided in the test box body, and a second temperature sensor and a humidity sensor are provided in the placement rack;

[0007] A dryer is arranged in the test box body.

[0008] Preferably, a baffle is provided in the test box body near the end of the exhaust pipe, and a plurality of through holes are formed on the baffle.

[0009] Preferably, an anti-slip mat is provided on the placement rack.

[0010] Preferably, the upper wall of the box body is a funnel-shaped structure.

[0011] The utility model has the following beneficial effects: the utility model has a reasonable structure and a novel design. When in use, the user places the experimental sample on the placement rack and turns on the fan. The fan draws the air in the test box body into the box through the air inlet pipe, and uses the electric heating tube and the first temperature sensor to control the water temperature. Under the action of the fan, the air in the test box body enters the box through the air inlet pipe, the gas is heated and humidified by the water, discharged from the exhaust pipe, and flows back into the test box body. The water in the box heats and humidifies the air, and the wind discharged from the exhaust pipe is evenly blown into the test box body through the through hole. The temperature in the placement rack is monitored by the second temperature sensor, the fan is continuously operated, the air in the test box body is internally circulated, and the air humidity inside the test box body is monitored by the humidity sensor. When the humidity exceeds the required humidity, the dryer is turned on and the circulating air is dried by the dryer, thereby achieving the purpose of controlling the humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic front view of the utility model.

[0013] In the figure: 1-test box body, 2-box body, 3-air inlet pipe, 4-exhaust pipe, 5-fan, 6-check valve, 7-electric heating tube, 8-first temperature sensor, 9-placing rack, 10-second temperature sensor, 11-humidity sensor, 12-dryer, 13-baffle, 14-through hole, 15-anti-slip mat. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] See also Figure 1 A constant temperature and humidity test box, comprising a test box body 1, a box body 2 is fixed on the upper wall of the test box body 1, water is filled in the box body 2, the test box body 1 is connected to the box body 2 through an air inlet pipe 3 and an air exhaust pipe 4, a fan 5 is arranged on the air inlet pipe 3, and a one-way valve 6 is arranged at the connecting end of the air inlet pipe 3 and the box body 2;

[0016] Under the action of the fan 5, the air in the test box body 1 enters the box body 2 through the air inlet pipe 3, and the gas passes through the water, is discharged from the exhaust pipe 4, and flows back into the test box body 1;

[0017] An electric heating tube 7 is provided on the lower wall of the box body 2, and a first temperature sensor 8 is provided on the upper wall of the box body 2;

[0018] The water in the box body 2 is heated by the electric heating tube 7. A rotating shaft can be arranged in the box body 2. A stirring rod is arranged on the rotating shaft. A motor is also connected to the rotating shaft. The motor is arranged in the box body 2. The rotating shaft is driven by the motor to rotate, thereby driving the stirring rod to rotate. The stirring rod stirs the water, so that the water can be heated more evenly and efficiently.

[0019] A placement rack 9 is provided in the test box body 1, and a second temperature sensor 10 and a humidity sensor 11 are provided in the placement rack 9;

[0020] The placement rack 9 is used to place the test product, the second temperature sensor 10 is used to detect the temperature in the test box body 1, and the humidity sensor 11 is used to detect the humidity in the test box body 1;

[0021] A dryer 12 is provided in the test box body 1 for drying the inside of the test box body 1;

[0022] A baffle 13 is provided in the test box body 1 near the end of the exhaust pipe 4, and a plurality of through holes 14 are provided on the baffle 13. The air discharged from the exhaust pipe 4 is evenly blown into the test box body 1 through the through holes 14.

[0023] The placement rack 9 is provided with an anti-skid pad 15 to prevent the test product from sliding off the placement rack 9;

[0024] The upper wall of the box body 2 is a funnel-shaped structure to facilitate air discharge.

[0025] Embodiment: The control mode of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in the field. The provision of power is also common knowledge in the field. The present invention is mainly used to protect mechanical devices, so the present invention does not explain the control mode and circuit connection in detail. When using, the user places the experimental sample on the placement rack 9, turns on the fan 5, and the fan 5 sucks the air in the test box body 1 into the box body 2 through the air inlet pipe 3. The water temperature is controlled by the electric heating tube 7 and the first temperature sensor 8. Under the action of the fan 5, the air in the test box body 1 passes through the inlet pipe 3. The air duct 3 enters into the box body 2, the gas is heated and humidified by water, discharged from the exhaust duct 4, and flows back into the test box body 1. The water in the box body 2 heats and humidifies the air, and the wind discharged from the exhaust duct 4 is evenly blown into the test box body 1 through the through hole 14. The second temperature sensor 10 is used to monitor the temperature in the placement rack 9. The fan 5 is continuously operated, and the air in the test box body 1 is circulated internally. The humidity of the air inside the test box body 1 is monitored by the humidity sensor 11. When the humidity exceeds the required humidity, the dryer 12 is turned on to dry the circulating air, thereby achieving the purpose of controlling the humidity.

[0026] In the description of this solution, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "communication" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal communication of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant temperature and humidity test chamber, It is characterized in that The test box comprises a test box body (1), a box body (2) is fixed on the upper wall of the test box body (1), the test box body (1) and the box body (2) are connected via an air inlet pipe (3) and an air outlet pipe (4), a fan (5) is arranged on the air inlet pipe (3), and a one-way valve (6) is arranged at the connection end between the air inlet pipe (3) and the box body (2); The lower wall of the box body (2) is provided with an electric heating tube (7), and the upper wall of the box body (2) is provided with a first temperature sensor (8); A placement rack (9) is arranged in the test box body (1), and a second temperature sensor (10) and a humidity sensor (11) are arranged in the placement rack (9); A dryer (12) is arranged inside the test box body (1).

2. A constant temperature and humidity test chamber according to claim 1, It is characterized in that A baffle (13) is arranged in the test box body (1) near the end of the exhaust pipe (4), and a plurality of through holes (14) are opened on the baffle (13).

3. A constant temperature and humidity test chamber according to claim 1, It is characterized in that The placement rack (9) is provided with an anti-slip pad (15).

4. A constant temperature and humidity test chamber according to claim 1, It is characterized in that The upper wall of the box body (2) is a funnel-shaped structure.

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