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CN-121972240-A - Environmental test box

CN121972240ACN 121972240 ACN121972240 ACN 121972240ACN-121972240-A

Abstract

The invention relates to the technical field of test boxes, in particular to an environment test box which comprises a mechanical chamber provided with a driving module and a power supply module, wherein the mechanical chamber is isolated from the outside air, a first fan, a first heat exchanger and a second heat exchanger are arranged in the mechanical chamber, the driving module is positioned between the first heat exchanger and the second heat exchanger, the second heat exchanger is positioned between the driving module and the power supply module, under the action of the first fan, air flow in the mechanical chamber enters the first fan from an air inlet end of the first fan, and then sequentially passes through the first heat exchanger, the driving module, the second heat exchanger and the power supply module from an air outlet end of the first fan, and then flows back to the air inlet end of the first fan for circulation. When the environment test box is used, heat generated by the operation of the power module and the driving module is taken away by cooling media (circulating cooling water) of the first heat exchanger and the second heat exchanger respectively, so that the driving module and the power module are cooled in a grading manner, and external dust is prevented from invading the machine room.

Inventors

  • ZHENG ZHENYU
  • Xiong Zhongpu
  • TANG ZONGMING
  • HUANG MINGYANG
  • ZHENG KUN

Assignees

  • 广州五所环境仪器有限公司

Dates

Publication Date
20260505
Application Date
20260204

Claims (10)

  1. 1. The environment test box comprises a mechanical chamber provided with a driving module and a power supply module, and is characterized in that the mechanical chamber is isolated from the outside air, a first fan, a first heat exchanger and a second heat exchanger are arranged in the mechanical chamber, the driving module is located between the first heat exchanger and the second heat exchanger, the second heat exchanger is located between the driving module and the power supply module, under the action of the first fan, air flow in the mechanical chamber enters the first fan from an air inlet end of the first fan, and then flows back to an air inlet end of the first fan from an air outlet end of the first fan sequentially through the first heat exchanger, the driving module, the second heat exchanger and the power supply module.
  2. 2. The environmental test chamber of claim 1, further comprising a test chamber body, wherein the test chamber body is arranged on one side outside the machine room, a second fan and a third heat exchanger are arranged in the test chamber body, the third heat exchanger is arranged on one side of the test chamber body, and under the action of the second fan, air flow in the test chamber body enters the second fan from the air inlet end of the second fan, sequentially passes through the test chamber and the third heat exchanger from the air outlet end of the second fan, and then flows back to the air inlet end of the second fan, so that circulation is realized.
  3. 3. The environmental test chamber of claim 2, wherein the top edge of the third heat exchanger is flush with the top edge of the test chamber, a first air channel is formed between the top edge of the third heat exchanger and the top edge of the test chamber and the top wall in the test chamber, the first air channel is communicated with the air inlet end of the second fan, a second air channel is formed between a side wall of the third heat exchanger facing away from the test chamber and the side wall in the test chamber, and the second air channel is communicated with the first air channel to form an L-shaped air channel.
  4. 4. An environmental test chamber according to claim 3 wherein a heater is provided at the top of the chamber for regulating the temperature of the air flow entering the second fan.
  5. 5. An environmental test chamber according to claim 3, wherein the top of the test chamber body is provided with an air inlet and an air outlet, both of which are communicated with the L-shaped air duct, a first control valve is arranged in the air inlet for controlling the flow rate of air flowing into the L-shaped air duct from the outside, and a second control valve is arranged in the air outlet for controlling the flow rate of air flowing out of the test chamber body.
  6. 6. The environmental test chamber of claim 2, wherein a first baffle is further disposed in the test chamber, and a first flow channel is formed between the first baffle and the side of the test chamber facing away from the third heat exchanger for guiding the air flow discharged from the air outlet end of the second fan into the test chamber.
  7. 7. An environmental test chamber according to claim 1, wherein a second baffle is disposed in the machine chamber, and a second flow guide channel is formed between the second baffle and the first heat exchanger for guiding the air flow discharged from the air outlet end of the first fan into the first heat exchanger.
  8. 8. The environmental test chamber of claim 1, wherein a partition plate is further disposed in the machine chamber, the partition plate is located at the top of the first heat exchanger, the driving module, the second heat exchanger and the power module, a third air channel is formed on the partition plate and the top wall in the machine chamber, a fourth air channel is formed on the power module and one side wall in the machine chamber, the fourth air channel is perpendicular to the third air channel, and a communicating part for communicating the third air channel with the fourth air channel is formed on the partition plate.
  9. 9. An environmental test chamber according to claim 1, wherein a temperature detector is further provided in the machine chamber for monitoring the temperature in the machine chamber in real time.
  10. 10. An environmental test chamber according to claim 1, wherein a humidity transducer is further provided in the machine chamber for monitoring the humidity in the machine chamber in real time.

Description

Environmental test box Technical Field The invention relates to the technical field of test boxes, in particular to an environment test box. Background At present, an air-cooled high-low temperature test box disclosed in the prior patent (bulletin number: CN 218502080U) comprises a mechanical chamber, a power distribution cabinet and a test box body, wherein a refrigerator for providing cool air is arranged in the mechanical chamber, fin condensers are arranged below the test box body and at the top of the mechanical chamber, an axial flow fan facing inwards is further arranged below the test box body, an axial flow fan facing outwards is further arranged at the top of the mechanical chamber, ventilation openings are formed in the four peripheral surfaces and the top of the bottom of the air-cooled high-low temperature test box, and the ventilation openings at the top are positioned right above the mechanical chamber. The air-cooled high-low temperature test box forms a circulating heat dissipation air duct through the bottom of the equipment and the area where the mechanical chamber is located, the air duct is internally matched with the axial flow fan and the fin condenser to form an efficient air-cooled heat dissipation system, the heat dissipation effect of the equipment is improved, a large amount of heat generated during the operation of the refrigerator in the mechanical chamber is effectively dissipated, the improvement of the working environment temperature in the mechanical chamber is facilitated, and the operation stability of the refrigerator is ensured. Although the conventional test box can effectively dissipate a large amount of heat generated in the machine room when in use, the air cooling mode is adopted to cool, and the air cooling mode needs to exchange a large amount of heat with the external air, so that dust in the external air enters the machine room, and the use of equipment in the machine room can be influenced under long-term use, so that the service life and the stability of the environment test box can be influenced. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide an environment test box, which aims to solve the technical problems that the mechanical chamber of the existing test box is cooled by adopting an air cooling mode, and a great deal of heat exchange is required to be carried out between the air cooling mode and external air, so that dust in the external air enters the mechanical chamber. In order to achieve the above purpose, the present invention adopts the following technical scheme: the environment test box comprises a mechanical chamber provided with a driving module and a power supply module, wherein the mechanical chamber is isolated from the outside air, a first fan, a first heat exchanger and a second heat exchanger are arranged in the mechanical chamber, the driving module is positioned between the first heat exchanger and the second heat exchanger, the second heat exchanger is positioned between the driving module and the power supply module, under the action of the first fan, air flow in the mechanical chamber enters the first fan from an air inlet end of the first fan, and then flows back to an air inlet end of the first fan from an air outlet end of the first fan sequentially through the first heat exchanger, the driving module, the second heat exchanger and the power supply module. Further, the environment test box also comprises a test box body, wherein the test box body is arranged on one side outside the machine room, a test chamber is arranged in the test box body, a second fan and a third heat exchanger are also arranged in the test box body, and the third heat exchanger is arranged on one side of the test chamber; under the action of the second fan, the air flow in the test box body enters the second fan from the air inlet end of the second fan, then sequentially passes through the test room and the third heat exchanger from the air outlet end of the second fan, and then flows back to the air inlet end of the second fan, so that circulation is realized. Further, the top edge of the third heat exchanger is flush with the top edge of the test chamber, a first air channel is formed on the top edge of the third heat exchanger, the top edge of the test chamber and the top wall in the test chamber, the first air channel is communicated with the air inlet end of the second fan, a second air channel is formed on the side wall, facing away from the test chamber, of the third heat exchanger and the side wall in the test chamber, and the second air channel is communicated with the first air channel to form an L-shaped air channel. Further, a heater is arranged at the top of the laboratory and is used for adjusting the temperature of the air flow entering the second fan. Further, an air inlet and an air outlet are arranged at the top of the test box body, the air inlet and the air outlet are both communicated with th