Adjustable temperature change test box air supply device

Abstract

The utility model discloses an adjustable air supply device for a temperature change test box, which relates to the field of temperature change test boxes and is characterized by comprising a main pipe, one end of the main pipe is connected with an air source through a centrifugal fan, the other end of the main pipe is connected with a cavity, and the surface of the cavity is communicated with a central air supply pipe. The two sides of the cavity are connected with adjusting air supply pipes through rubber hoses, air outlet pipes distributed in a transverse array mode are installed at the bottoms of the adjusting air supply pipes and the bottom of the center air supply pipe, and a telescopic fixing assembly is installed at the top of the cavity so as to adjust the distance between the two adjusting air supply pipes and the center air supply pipe. The temperature change test box has the advantages that the position of the air outlet is adjusted by adjusting the distance between the two adjusting pipes, the situation that the design position of a ventilation opening is unreasonable is avoided, the situation that an air supply device is slightly large and is difficult to install in the temperature change test box is also avoided, and the applicability of the temperature change test box can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of temperature change test box, more specifically, it relates to an adjustable temperature change test box air supply device. BACKGROUND

[0002] The temperature test box is a kind of equipment for simulating various temperature environments to test products or materials, which is mainly used to simulate various different temperature environments to test the performance of various products, materials or parts and reliability.

[0003] Air supply device needs to be installed in temperature change test box, if there is no air supply device in temperature change test box, the heat or cold produced by heating or refrigeration system is only transmitted in local area, which can cause large temperature difference in different positions in the box, so that the samples placed in different positions are subjected to different temperature environments, affecting the accuracy and reliability of test results.The air supply device can make the air in the box circulate continuously, and the heat or cold is evenly transmitted to every corner, ensuring the uniformity of temperature field in the box, so that all samples can be tested under the same temperature conditions.

[0004] However, the position of air outlet of the existing air supply device is fixed and cannot be adjusted according to different temperature test boxes, which often causes unreasonable design of air vent, destroys the uniformity of temperature transmission in each area, and makes it take longer time and input more energy to make each area in the test box reach the set temperature, and it is also difficult to install the air supply device into the temperature change test box, which finally leads to low applicability of the device.

[0005] Therefore, in order to solve the above technical problems, the present application provides an adjustable temperature change test box air supply device. UTILITY MODEL CONTENT

[0006] In view of the deficiencies in the prior art, the utility model aims to provide an adjustable temperature change test box air supply device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an adjustable temperature change test box air supply device, comprising a main pipe connected with air source at one end through centrifugal fan, the other end of the main pipe is connected with chamber, the surface of the chamber is connected with center air supply pipe, the two sides of the chamber are connected with adjusting air supply pipe through rubber hose, the bottom of adjusting air supply pipe and center air supply pipe is equipped with air outlet pipe arranged in transverse array, the top of the chamber is equipped with telescopic fixing assembly, to adjust the distance between two adjusting air supply pipes and center air supply pipe.

[0008] Preferably, the telescopic fixing assembly comprises a hollow rod fixed at the top end of the chamber, and the inside of the hollow rod is slidably connected with inner rods at both sides, and the end of the inner rod is fixed with the adjusting air supply pipe through a vertical rod.

[0009] Preferably, the top of the hollow rod is provided with a plurality of through holes arranged in a longitudinal array, the top of the inner rod is provided with a plurality of screw holes arranged in a longitudinal array, the top of the screw hole is provided with a screw, and the screw is sequentially downwardly passed through the through hole and then clockwise installed into the screw hole, so as to fix the hollow rod and the inner rod through the screw.

[0010] Preferably, the air outlet pipe is provided with an electric valve for controlling the opening and closing of the air outlet pipe, and the air outlet pipe is provided with a temperature sensor, and the bottom of the chamber is provided with a control device, the temperature sensor is used for detecting the temperature in real time and transmitting the temperature information to the control device, and the control device is used for controlling the electric valve to realize the advance closing of part of the air outlet pipe, so that the temperature inside the temperature change test box is uniform.

[0011] Preferably, the control device comprises:

[0012] a controller for receiving the signal transmitted by the temperature sensor, when the temperature sensor detects that the temperature of the position of the air outlet pipe corresponding to the temperature sensor reaches the set value, the controller sends a signal to the actuator to drive the corresponding electric valve to close the corresponding air outlet pipe;

[0013] an actuator for closing the corresponding air outlet pipe according to the signal of the controller.

[0014] Preferably, the chamber is provided with a pressure sensor, and the pressure sensor cooperates with the control device to ensure that the air supply device can stably supply air.

[0015] Preferably, when the pressure sensor detects that the air pressure inside the chamber is too high or too low, the pressure sensor sends a signal to the controller, the controller sends a signal to the actuator to adjust the rotating speed of the centrifugal fan, and finally the actuator performs corresponding operation, so that the air supply device can stably supply air.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1、 the utility model discloses a temperature change test box, which comprises a chamber, two adjusting pipes are arranged on the top of the chamber, and the two adjusting pipes are connected with the chamber through a telescopic fixing assembly.

[0018] 2. This utility model uses the control mechanism of the control device to close the air outlet when the temperature at a certain air outlet reaches the set value, which can prevent the air outlet from continuing to transport air that changes the temperature and prevent local temperature from being too high or too low. At the same time, it guides the airflow through other unclosed air outlets, which helps to make the temperature distribution inside the box more uniform.

[0019] 3. This utility model, through the cooperation of pressure sensors and control devices, ensures that the air supply device can stably supply air, thereby ensuring the normal operation of the entire temperature change test chamber system and the reliability of the test results. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This utility model Figure 1 A local structure method diagram;

[0023] Figure 3 This utility model Figure 1 Another perspective on the specific structure;

[0024] Figure 4 This utility model Figure 3 Enlarged view of the local structure of B.

[0025] In the diagram: 1. Main pipe; 2. Centrifugal fan; 3. Chamber; 4. Central air supply duct; 5. Adjustable air supply duct; 6. Air outlet duct; 7. Telescopic fixing assembly; 701. Hollow rod; 702. Inner rod; 703. Through hole; 704. Screw hole; Screw; 705. Vertical rod; 8. Temperature sensor; 9. Controller; 10. Rubber hose; 11. Electric valve. Detailed Implementation

[0026] like Figures 1-4 As shown, this utility model provides an adjustable air supply device for a temperature change test chamber, including a main pipe 1 connected to an air source at one end via a centrifugal fan 2, and the other end of the main pipe 1 connected to a chamber 3. A central air supply pipe 4 is interconnected on the surface of the chamber 3. The two sides of the chamber 3 are connected to adjustable air supply pipes 5 via rubber hoses 10. Air outlet pipes 6 arranged in a horizontal array are installed at the bottom of the adjustable air supply pipes 5 and the central air supply pipe 4. A telescopic fixing assembly 7 is installed on the top of the chamber 3 to adjust the distance between the two adjustable air supply pipes 5 and the central air supply pipe 4.

[0027] It should be noted that the rubber hose 10 is reserved enough length, in use, through the telescopic fixing assembly 7 adjusts two adjusting air supply pipes 5 relative to the center air supply pipe 4 position (the center air supply pipe 4 as its name, after installation, located in the middle of the temperature change test chamber) and fixed, in this process, the rubber hose 10 can ensure the intercommunication between the chamber 3 and the center air supply pipe 4, in the process of air supply, the air source (both hot air and cold air) through the main pipe 1 to the chamber 3 air supply, by centrifugal fan 2 for air supply power, so that the chamber 3 has enough pressure, the chamber 3 will be directly delivered to the center air supply pipe 4 and through the rubber hose 10 to the adjusting air supply pipe 5, so as to blow through the center air supply pipe 4 and the adjusting air supply pipe 5 bottom air outlet pipe 6, so as to deliver the hot air or cold air evenly to the temperature change test chamber, so as to adjust the air outlet position (i.e. the position of the air outlet pipe 6) by adjusting the distance between the two adjusting pipes, so as to avoid the unreasonable design position of the air vent, also avoid the air supply device slightly large difficult to install into the temperature change test chamber, can effectively improve its applicability (the air supply device can be changed by adjusting the position of the adjusting air supply pipe, so that the whole becomes smaller).

[0028] The following is the specific structure of the telescopic fixing assembly 7: the telescopic fixing assembly 7 includes a hollow rod 701 fixed at the top of the chamber 3, the inside of the hollow rod 701 is slidably connected with an inner rod 702 on both sides, the end of the inner rod 702 is fixed with the adjusting air supply pipe 5 through a vertical rod 705, the top of the hollow rod 701 is arranged with a plurality of through holes 703 in longitudinal array, the top of the inner rod 702 is provided with a plurality of screw holes 704 arranged in longitudinal array, the screw holes 704 are installed with screws, and the screws pass through the through holes 703 in turn and are installed into the screw holes 704 in clockwise rotation, by pulling the movement of the inner rod 702 relative to the hollow rod 701, the inner rod 702 moves along the inside of the hollow rod 701, at the same time, the inner rod 702 drives the movement of the adjusting air supply pipe 5 through the vertical rod 705, so as to adjust the distance between the two adjusting air supply pipes 5 relative to the center air supply pipe 4, when the position adjustment is completed, the screw passes through the through hole 703 on the hollow rod 701, and is installed into the screw hole 704 on the inner rod 702 in clockwise rotation, so as to fix the inner rod 702 and the hollow rod 701, that is, the position of the adjusting air supply pipe 5 can be fixed.

[0029] In order to ensure that the temperature of the temperature change test box is uniform, the utility model makes the following improvements: the air outlet pipe 6 is provided with an electric valve 11 for controlling the opening and closing of the air outlet pipe 6, and the air outlet pipe 6 is provided with a temperature sensor 8, and the bottom of the chamber 3 is provided with a control device 9; the temperature sensor 8 detects the temperature in real time and transmits the temperature information to the control device 9, and the control device 9 controls the electric valve 11 to close the air outlet pipe 6 in advance; and the control device 9 comprises a controller and an actuator.

[0030] Firstly, the temperature sensor 8 is installed on the air outlet pipe 6, and its main task is to detect the temperature around the air outlet pipe 6 in real time; the temperature sensor 8 continuously senses the temperature around it and transmits the temperature information to the controller in the control device 9 in the form of an electric signal; the controller, as the core of the entire control logic, compares the temperature signal from the temperature sensor 8 with the preset set value; when the controller finds that the temperature detected by the temperature sensor 8 reaches the set value, it makes a decision according to the predetermined control logic; the controller sends a signal to the actuator, and the signal contains the closing instruction information of the corresponding air outlet pipe 6; and the actuator drives the corresponding electric valve 11 to close the corresponding air outlet pipe 6 according to the signal received from the controller.

[0031] In this way, when the temperature of the air outlet pipe 6 reaches the set value, the air outlet pipe 6 is closed by the control mechanism of the control device 9, so that the air outlet pipe 6 can be prevented from continuously conveying air flow with a changed temperature, and the local temperature can be prevented from being too high or too low; at the same time, the air flow is guided to pass through other air outlet pipes 6 which are not closed, which helps to make the temperature distribution in the box more uniform.

[0032] Furthermore, the chamber 3 is provided with a pressure sensor, and when the pressure sensor detects that the air pressure in the chamber 3 is too high or too low, the pressure sensor sends a signal to the controller, the controller sends a signal to the actuator to adjust the rotating speed of the centrifugal fan 2, and finally the actuator performs corresponding operation, so that the air supply device can stably supply air.

[0033] The pressure sensor is used to detect the air pressure inside the chamber 3 in real time. When the air pressure inside the chamber 3 changes and the air pressure is too high or too low, the pressure sensor can quickly perceive the change and convert it into a corresponding electrical signal to send to the controller. As the control core of the entire system, the controller will process according to the pre-set logic and program after receiving the signal from the pressure sensor. If it is judged that the air pressure is out of the normal range, the controller will generate a signal to adjust the speed of the centrifugal fan 2, which contains specific requirements for adjusting the speed of the centrifugal fan 2, such as whether to speed up or slow down. Then, the controller will pass this signal to the actuator, and the actuator will execute the corresponding operation according to the signal instruction to adjust the speed of the centrifugal fan 2. Through such a control process, the air pressure inside the chamber 3 can be effectively adjusted. When the air pressure inside the chamber 3 is too high, the actuator will control the centrifugal fan 2 to reduce the speed, so that the amount of air entering the chamber 3 is reduced, thereby reducing the air pressure; on the contrary, when the air pressure is too low, the centrifugal fan 2 will increase the speed to increase the amount of air entering the chamber 3, thereby increasing the air pressure. In this way, through the coordinated work between the pressure sensor, the controller and the actuator, the stability of the air pressure inside the chamber 3 is ensured, so that there is enough pressure in the chamber 3 to deliver air to the central air supply pipe 4 and the adjusting air supply pipe 5, thereby ensuring that the air supply device can stably supply air, avoiding a series of problems caused by air pressure fluctuations, such as uneven air supply, uneven temperature distribution, equipment damage or affecting the accuracy of the test, etc., ensuring the normal operation of the entire temperature change test box system and the reliability of the test results.

[0034] The above is only a preferred embodiment of the present application, and does not limit the present application in any form; any person skilled in the art can easily implement the present application according to the above description and the drawings; however, any equivalent changes, modifications and evolution of the above-mentioned technical content within the scope of the technical scheme of the present application are also equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above-mentioned technical content within the scope of the technical scheme of the present application are also equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above-mentioned technical content within the scope of the technical scheme of the present application are also equivalent embodiments of the present application.

Claims

1. An adjustable air supply device for a temperature change test chamber, characterized by: The utility model relates to a temperature uniformity adjustable air supply device, including one end through centrifugal fan (2) with air source connection main pipe (1), the other end of main pipe (1) is connected with chamber (3), the surface of chamber (3) is connected with center air supply pipe (4) mutually, the both sides of chamber are connected with the adjusting air supply pipe (5) through rubber hose (10), the bottom of adjusting air supply pipe (5) and center air supply pipe (4) are installed with the air outlet pipe (6) of transverse array arrangement, the top of chamber (3) is installed with telescopic fixing assembly (7) to adjust the distance of two adjusting air supply pipe (5) relative to center air supply pipe (4).

2. The adjustable air supply device for a temperature change test chamber according to claim 1, characterized in that: The telescopic fixing assembly (7) includes a hollow rod (701) fixed to the top end of the chamber (3), the inside of the hollow rod (701) is slidably connected with an inner rod (702) on both sides, and the end of the inner rod (702) is fixed to the adjusting air supply pipe (5) through a vertical rod (705).

3. The adjustable air supply device for a temperature change test chamber according to claim 2, characterized in that: The top of the hollow rod (701) is longitudinally arrayed with a plurality of through holes (703), the top of the inner rod (702) is provided with a plurality of screw holes (704) arranged in a longitudinal array, the top of the screw hole (704) is provided with a screw, and the screw passes through the through hole (703) and is installed into the screw hole (704) in a clockwise direction in sequence.

4. The adjustable air supply device for a temperature change test chamber according to claim 1, wherein: The air outlet pipe (6) is provided with an electric valve (11) for controlling the opening and closing of the air outlet pipe (6), and a temperature sensor (8) is installed on the air outlet pipe (6). The bottom of the chamber (3) is provided with a control device (9), which detects the temperature in real time through the temperature sensor (8) and transmits the temperature information to the control device (9). The control device (9) controls the electric valve (11) to achieve the advance closing of part of the air outlet pipe (6), so as to make the temperature inside the temperature change test box uniform.

5. The adjustable air supply device for a temperature change test chamber according to claim 4, wherein: The control device (9) includes: a controller for receiving signals from the temperature sensor (8), when the temperature sensor (8) detects that the temperature at the position of the air outlet pipe (6) corresponding to it reaches the set value, the controller will send a signal to the actuator to drive the corresponding electric valve (11) to close the corresponding air outlet pipe (6); an actuator driven by the controller to close the corresponding air outlet pipe (6).

6. The adjustable air supply device for a temperature change test chamber according to claim 5, wherein: A pressure sensor is installed in the chamber (3).

7. The adjustable air supply device for a temperature change test chamber according to claim 6, wherein: When the pressure sensor detects that the air pressure inside the chamber (3) is too high or too low, it will send a signal to the controller, and the controller will send a signal to the actuator to adjust the speed of the centrifugal fan (2), and finally the actuator will perform corresponding operations to make the air supply device stable.

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