TWI557380B - Temperature-humidity chamber - Google Patents

Description

Improved constant temperature and humidity test equipment

The present invention relates to an improved constant temperature and humidity testing apparatus, and more particularly to an improved constant temperature and humidity testing apparatus for controlling a gas flow to provide a preferred temperature and flow field uniformity in a test area.

With the advancement of the times, various electronic devices have become closer to people's lives, and have become an inseparable part of people's lives, bringing us great convenience in life. However, these electronic devices (such as digital cameras) are susceptible to excessive temperature and humidity in the space to reduce the service life, and even in the event of inoperability. Therefore, these electronic devices are designed to undergo a series of environmental test verifications to ensure that their functions remain normal in different environments.

In order to test these electronic devices, a conventional constant temperature and humidity test box is provided on the market, as shown in FIG. 1 , and FIG. 1 is a schematic view of a conventional constant temperature and humidity test box. The user can place the electronic device in the test space 11 in the constant temperature and humidity test box, the test space 11 is surrounded by the convective airflow, and the airflow is controlled by the heating device 12 and the cooling device 13 to control the temperature and humidity thereof. Let the electronic device test at a specific ambient temperature and humidity.

However, conventional constant temperature and humidity test chambers are capable of testing these electronic devices. However, the airflow around the test area is not rectified, and this convection mode causes the airflow to create a turbulence when changing direction, especially when the airflow is turning at the end point. Therefore, the conventional constant temperature and humidity chamber will generate at least a plurality of regions of the turbulence (the flow field in this region will be uneven in velocity and temperature distribution), so that the flow field uniformity in the constant temperature and humidity test chamber is not good. This in turn leads to poor control of temperature and humidity.

Therefore, how to improve the uniformity of the flow field and temperature of the gas flow in the constant temperature and humidity test chamber is worthy of consideration in the field.

The object of the present invention is to provide a constant temperature and humidity test apparatus, which has an improved constant temperature and humidity test apparatus with better flow field and temperature uniformity.

It is an object of the present invention to provide an improved constant temperature and humidity test apparatus having controllable humidity and temperature of a gas stream. The improved constant temperature and humidity test apparatus includes an outer casing including a fan module, a pair of flow ducts, and An inner casing. The fan module is adapted to generate a convection airflow, the convection air duct includes a return air duct and an air outlet duct, the return air duct is connected to one end of the fan module, and the air outlet duct is connected to the other end of the fan module. The inner casing includes a wind direction adjuster, a first air passage, a second air passage, a humidifying device, a cooling module, and a test area, and the wind direction adjuster includes a rotating member and a stationary member. And the wind direction adjuster is connected to the convection duct, and the first air duct and the second air duct are respectively connected to the wind direction adjuster. The first air passage is connected to one end of the wind direction adjuster, and the first air passage includes a first heater and a first air rectifier. The first heater is configured to adjust the temperature of the airflow in the first air duct, the first air rectifier is adapted to adjust the stability of the airflow in the first air duct, and the second air duct is connected to the other end of the wind direction adjuster, The second air duct includes a second heater and a second air rectifier. The second heater is used to heat the airflow in the second air duct, and the second air rectifier is used to adjust the stability of the airflow in the second air duct. In addition, the humidifying module and the cooling module are respectively adapted to adjust the temperature and humidity of the airflow in the first air duct and the second air duct, and the upper part of the test area is connected to the first air duct, and the bottom of the test area is connected. In the second wind. Wherein, the wind direction adjuster changes the direction of the tuyere by rotating the rotating member, and changes the direction of convection of the airflow.

It is an object of the present invention to provide an improved constant temperature and humidity test apparatus having controllable humidity and temperature of a gas stream. The improved constant temperature and humidity test apparatus includes an outer casing including an inner casing. The inner casing includes a fan module, a first air duct, a second air duct, a humidifying module, a cooling module and a test area. The fan module is adapted to generate a convective airflow and has two directions of rotation, the first air duct is connected to one end of the fan module, and the first air duct includes a first heater and a first air rectifier. The first heater is configured to adjust the temperature of the airflow in the first air duct, the first air rectifier is adapted to adjust the stability of the airflow in the first air duct, and the second air duct is connected to the other end of the fan module, The second air duct includes a second heater and a second air rectifier. The second heater is used to heat the airflow in the second air duct, and the second air rectifier is used to adjust the stability of the airflow in the second air duct. In addition, the humidifying module is adapted to adjust the humidity of the airflow in the first air duct and the second air duct; the cooling module is adapted to adjust the temperature of the airflow in the first air duct and the second air duct, and the upper part of the test area is connected to the first A wind tunnel, and below the test area is connected to the second air duct. Wherein, the fan module is disposed in the inner casing to change the convection direction of the airflow in the inner casing.

The improved constant temperature and humidity test apparatus described above, wherein the first air passage further comprises a first air buffer, the first air buffer is connected to the first air rectifier, and the first air buffer is adapted to adjust the first air passage. The air flow rate; the second air duct further includes a second air buffer, the second air buffer is coupled to the second temperature regulator, and the second air buffer is adapted to adjust the air flow speed in the second air duct.

The above-mentioned improved constant temperature and humidity testing device, wherein the wind direction adjuster comprises six air outlets, and the six air outlets are respectively a first air outlet, a second air outlet, a third air outlet, a fourth air outlet, a fifth air outlet, and a first air outlet. a sixth tuyere, wherein the first tuyere and the sixth tuyere are connected to the first air duct, the second tuyere and the fifth tuyere are connected to the second air duct, the third tuyere is connected to the return air duct, and the fourth tuyere is connected To the air duct.

The above improved constant temperature and humidity testing device, wherein the rotating member of the wind direction adjuster is mounted on the stationary member.

The above-mentioned improved constant temperature and humidity testing device, wherein the wind direction adjuster has a rotating mechanism, and the rotating mechanism is connected with the rotating member by the rotating mechanism, and the rotating member is rotated, when in a cooling state, The wind direction adjuster is at a first angular position, and the first air outlet, the third air outlet, the fourth air outlet, and the fifth air outlet are in an open state, and the second air outlet and the sixth air outlet are in a closed state, so that the air flow is from the first air passage to the first air passage. The two air ducts flow; when in the heating state, the wind direction adjuster is at the second angular position, the second air outlet, the third air outlet, the fourth air outlet, and the sixth air outlet are in an open state, and the first air outlet and the fifth air outlet are in a closed state , the air flow flows from the second air passage to the first air passage.

The improved constant temperature and humidity test device described above, when the fan module rotates in a first rotation direction, the airflow can flow from the first air passage to the second air passage, and when the wind turbine module rotates in a second rotation direction , the air flow can be flowed from the second air duct to the first air passage.

The above described features and advantages will be more apparent from the following description.

Traditional constant temperature and humidity test box:

11‧‧‧Test space

12‧‧‧ heating device

13‧‧‧Cooling device

The improved constant temperature and humidity testing device of the invention:

2, 3‧‧‧Modified constant temperature and humidity test equipment

21‧‧‧Outer casing

22‧‧‧Fan Module

23‧‧‧Convection duct

231‧‧‧Return air duct

232‧‧‧Air duct

24‧‧‧ inner casing

241‧‧‧First air duct

241A‧‧‧First heater

241B‧‧‧First Air Rectifier

241C‧‧‧First air buffer

242‧‧‧Wind adjuster

2421‧‧‧Rotating parts

2422‧‧‧ Static parts

2423‧‧‧Rotating mechanism

2424‧‧‧ tuyere regulator

242A‧‧‧First air outlet

242B‧‧‧second air outlet

242C‧‧‧ third air outlet

242D‧‧‧fourth air outlet

242E‧‧‧ fifth outlet

242F‧‧‧ sixth air outlet

243‧‧‧Second air duct

243A‧‧‧second heater

243B‧‧‧Second air rectifier

243C‧‧‧Second air buffer

244‧‧‧Humidification module

245‧‧‧Cooling module

246‧‧‧Test area

FIG. 1 is a schematic view of a conventional constant temperature and humidity test chamber.

FIG. 2 is a schematic diagram of the improved constant temperature and humidity test apparatus of the present embodiment.

FIG. 3 is a schematic diagram of a wind direction adjuster.

4A is a schematic diagram of convection when the airflow is in a cooling state, FIG. 4B is a schematic diagram of convection of the airflow in the wind direction adjuster in a cooling state, and FIG. 5A is a schematic diagram of convection when the airflow is in a heated state, FIG. 5B is a schematic diagram showing the convection of the airflow in the wind direction adjuster in a heated state.

FIG. 6 is a schematic diagram of an improved constant temperature and humidity test apparatus according to another embodiment.

Please refer to FIG. 2. FIG. 2 is a schematic diagram of the improved constant temperature and humidity testing device of the embodiment. The invention is an improved constant temperature and humidity testing device with humidity and temperature capable of controlling test space 2. The improved constant temperature and humidity test apparatus 2 includes an outer casing 21 including a fan module 22, a pair of air ducts 23, and an inner casing 24. The fan module 22 is adapted to generate a convective airflow and is connected to the convection duct 23, the convection duct 23 includes a return duct 231 and an air duct 232, and the return duct 231 is connected to the fan module 22 At one end, the air duct 232 is connected to the other end of the fan module 22, and the fan module 22 is connected to a wind direction adjuster 242 of the inner casing 24 through the convection duct 23. The inner casing 24 includes a wind direction adjuster 242, a first air duct 241, a second air duct 243, a humidifying module 244, a cooling module 245, and a test area 246. Please refer to FIG. 3 , which is a schematic diagram of the wind direction adjuster. The wind direction adjuster 242 includes six air outlets, for example, a first air outlet 242A, a second air outlet 242B, and a third air outlet. 242C, a fourth tuyere 242D, a fifth tuyere 242E, and a sixth tuyere 242F, and the wind direction adjuster 242 includes a rotating member 2421, a stationary member 2422, a rotating mechanism 2423, and a tuyere adjuster 2424. The rotating member 2421 is mounted on the stationary member 2422 (the rotating member 2421 has the function of rotating), and the rotating mechanism 2423 is connected to the rotating member 2421, and the stationary member 2422 is connected to the return duct 231 and the air outlet tube 232, and The tuyere adjuster 2424 is disposed on the rotating member 2421 and is adapted to control the closing direction of the tuyere. The wind direction adjuster 242 rotates the rotating mechanism 2423 to further rotate the rotating member 2421, and cooperates with the first to sixth air outlets 242A-242F of the stationary member 2422 to change the opening direction of the tuyere, thereby making the airflow The convection path changes.

In addition, in the embodiment, the direction of the airflow convection in the modified constant temperature and humidity test device 2 can be changed by the switching mode of the different air outlets of the wind direction adjuster 242, so that the airflow can pass through the first air passage or the second wind respectively. The convection is carried out. The first tuyere 242A and the sixth tuyere 242F are connected to the first air duct 241; the second tuyere 242B and the fifth tuyere 242E are connected to the second air duct 243; the third tuyere 242C is connected to the return duct 231; The fourth tuyere 242D is connected to the outlet duct 232.

In addition, please continue to see Figure 2. The first air channel 241 includes a first heater 241A and a first air rectifier 241B. The first heater 241A is configured to adjust the airflow in the first air channel 241 to bring the airflow to an appropriate temperature. The air rectifier 241B is adapted to adjust the air flow within the first air passage 241. In more detail, the relatively unstable airflow provided by the fan module 22 is rectified into a more stable airflow. relatively. The second air passage 243 includes a second heater 243A and a second air rectifier 243B. The second heater 243A is configured to adjust the temperature of the airflow in the second air passage 243 (having the same effect as the first heater 241A described above), and the second air rectifier 243B is used to adjust the airflow in the second air passage 243. Airflow (having the same effect as the first air rectifier 241B described above).

In addition, the first air passage 241 further includes a first air buffer 241C, which is connected to the first air rectifier 241B, and the first air buffer 241C is adapted to adjust the air flow speed in the first air passage 241. The uniformity of the distribution; the second air passage 243 further includes a second air buffer 243C connected to the second air rectifier 243B, the second air buffer 243C being adapted to adjust the second wind The uniformity of the airflow velocity distribution in the track 243.

Furthermore, the first air duct 241 is connected above the test area 246, and the second air duct 243 is connected below the test area 246. That is to say, when cooling is performed, the direction in which the airflow flows is from the first air passage to the second air passage, and the cold air is first cooled by the cooling module 245, and then tested by the test area 246. Flowing under the region 246, the cooling property of the cold air is used to increase the temperature uniformity of the test region 246; conversely, when the temperature is raised, the flow direction of the airflow is from the second air passage to the first air passage, and the hot air flows from the bottom to the Through the test area 246, the temperature uniformity of the test area is increased by the characteristic that the hot air rises, and the test area 246 is the area where the modified constant temperature and humidity test apparatus 2 places the object to be tested. The humidifying module 244 is disposed in the first air duct 241, and the humidifying module 244 is adapted to adjust the humidity of the airflow in the first air duct 241. As such, the humidity and temperature within the test zone 246 can be controlled to provide a good test environment.

In the convection mode of the airflow in the inner casing 24, the airflow has two different convection directions, a cooling state and a heating state. Please refer to FIG. 4A and FIG. 4B simultaneously. FIG. 4A is a schematic diagram showing convection when the airflow is in a cooling state, and FIG. 4B is a schematic diagram showing convection of the airflow in the wind direction adjuster in a cooling state. When in the cooling state, the wind direction adjuster 242 is at a first angular position. At this time, the first tuyere 242A, The third tuyere 242C, the fourth tuyere 242D, and the fifth tuyere 242E are in an open state, and the second tuyere 242B and the sixth tuyere 242F are in a closed state, so that the airflow flows from the first air duct 241 to the second air duct 243. The airflow is transmitted from the blower module 22 to the wind direction adjuster 242 (fourth tuyere 242D) by the air duct 232. And the airflow is transmitted to the first air duct 241 (the first air outlet 242A), the humidity of the airflow is adjusted to a predetermined set value through the humidifying device 244 in the first air duct 241, and the cooling device 245 performs the airflow. The temperature is cooled, and the velocity uniformity of the airflow is adjusted by the first air buffer 241C. At this time, the airflow passing through the test area 246 is prepared to be a uniform velocity airflow. And before being sent to the test area 246, the temperature of the airflow passing through the first heater 241A is finely adjusted to a predetermined set value through the first heater 241A and the first air rectifier 241B, and the airflow is rectified through the first air rectifier 241B. A stable airflow. Thereafter, the airflow passes through the lower side of the test area 246, is transmitted to the wind direction adjuster 242 (the fifth air outlet 242E) via the second air passage 243, and transmits the airflow back to the fan module 22 (the third air outlet 242C) through the return air duct 231. The airflow is formed when it is cooled.

Then, the convection mode of the airflow in the heated state. The wind direction adjuster 242 is in a second angular position, and the second air outlet 242B, the third air outlet 242C, the fourth air outlet 242D, and the sixth air outlet 242F are in an open state, and the first air outlet 242A and the fifth air outlet 242E are in a closed state. The airflow flows from the second air passage 243 to the first air passage 241. Please refer to FIG. 5A and FIG. 5B simultaneously. FIG. 5A is a schematic diagram of convection when the airflow is in a heating state, and FIG. 5B shows the heating state. A schematic diagram of the convection of the airflow in the wind direction adjuster. First, the airflow is transmitted from the air blower module 232 to the wind direction adjuster 242 (the fourth air outlet 242D) by the air duct 232, and the airflow is transmitted to the second air buffer 243C (the second air outlet 242B), and by the first The two air buffers 243C adjust the uniformity of the airflow speed. At this time, the airflow passing through the test area 246 is prepared to be a uniform velocity airflow, and the temperature of the airflow is increased by the second heater 243A. And through the second air rectifier 243B, the airflow is rectified into a stable airflow. Thereafter, the airflow is transmitted to the wind direction adjuster 242 (the sixth air outlet 242F) via the first air passage 241, and the airflow is transmitted back to the fan module 22 (the third air outlet 242C) through the return air duct 231, and is formed in the heating state. The airflow loops.

In addition, when the airflow passes through the first air duct 241, the humidity and temperature of the airflow are adjusted through the humidifying module 244 and the cooling module 245, respectively, and the airflow is transmitted back to the fan module 22. In more detail, the cooling module 245 can adjust the airflow temperature according to the cooling and heating requirements of the airflow, and the humidifying module 244 provides the required humidity adjustment to control the humidity change of the airflow, and the airflow is in the inner casing 24. Convection will be rectified (temperature, humidity, flow field uniformity adjustment), allowing the airflow to maintain convection in a stable state. So come. The airflow can have better temperature uniformity and current sharing, so that the test area 246 can have better temperature and flow field uniformity.

Please refer to FIG. 6. FIG. 6 is a schematic diagram of an improved constant temperature and humidity test apparatus according to another embodiment. The improved constant temperature and humidity test apparatus 3 of another embodiment includes all the technical features of the improved constant temperature and humidity test apparatus 2 described above, and the position of the blower module 22 is disposed in the inner casing 24, which is characterized in that The first air channel 241 is connected to one end of the fan module 22, and the second air channel 243 is connected to the other end of the fan module 22, and since the fan module 22 itself has the effect of forward and reverse borrowing, The direction of rotation of the fan module 22 is changed, so that the direction of the airflow can be changed. In this way, the airflow does not need to pass through the wind direction adjuster 242 to change direction, so that it has the effect of changing the convection direction of the airflow, so that the airflow can be convected through the first air duct 241 or the second air duct 243, respectively. When the fan module rotates in a first rotation direction, the airflow can be flowed from the first air passage to the second air passage. When the fan module rotates in a second rotation direction, the airflow can be The second air passage flows to the first air passage.

In summary, the improved constant temperature and humidity test apparatus 2 of the present embodiment has a better average temperature and current sharing effect than the conventional constant temperature and humidity test chamber, and the air flow can be adjusted by the air rectifier and the air buffer. The uniformity of the field. In this way, the airflow can have better temperature uniformity and current sharing, so that the inner casing 24 can have better temperature and flow field uniformity.

The present invention has been disclosed in the above preferred embodiments. However, it is not intended to limit the invention, and it is intended that the invention may be practiced otherwise without departing from the spirit and scope of the invention. The scope of protection of the present invention is defined by the scope of the appended claims. Any changes or modifications made by those who do not depart from the spirit or scope of this patent are subject to the equivalent changes or designs made in the spirit of the present disclosure and should be included in the scope of the following patent application.

2‧‧‧Modified thermostat

21‧‧‧Outer casing

22‧‧‧Fan Module

23‧‧‧Convection duct

231‧‧‧Return air duct

232‧‧‧Air duct

24‧‧‧ inner casing

241‧‧‧First air duct

241A‧‧‧First heater

241B‧‧‧First Air Rectifier

241C‧‧‧First air buffer

242‧‧‧Wind adjuster

243‧‧‧Second air duct

243A‧‧‧second heater

243B‧‧‧Second air rectifier

243C‧‧‧Second air buffer

244‧‧‧Humidification module

245‧‧‧Cooling module

246‧‧‧Test area

Claims (7)

An improved constant temperature and humidity testing device capable of controlling the humidity and temperature of a gas stream, the improved constant temperature and humidity testing device comprising: an outer casing comprising: a fan module adapted to generate a convective airflow; The convection duct comprises a return duct and an outlet duct, wherein the return duct is connected to one end of the fan module, and the outlet duct is connected to the other end of the fan module; and an inner casing The inner casing comprises: a wind direction adjuster comprising a rotating member and a stationary member, the wind direction adjuster is connected to the convection duct; a first air duct, the first air duct is connected to the wind direction One end of the regulator, the first air duct includes: a first air rectifier, the first air rectifier is adapted to adjust stability of the airflow in the first air passage; and a first heater, the first heating The second air passage is connected to the other end of the wind direction adjuster, and the second air passage includes: a second air rectifier, The second air rectifier is used to adjust a stability of the airflow in the second air duct; and a second heater for heating the airflow in the second air duct; and a humidifying module, the humidifying module is adapted to adjust the airflow The humidity of the airflow in the first air duct and the second air duct; and a cooling module adapted to adjust the temperature of the airflow in the first air duct and the second air duct; and a test area, the Above the test area is connected to the first air duct, and the lower side of the test area is connected to the second air duct; wherein the wind direction adjuster changes the closing of the air outlet by rotating the rotating member to make the air flow The direction of convection changes. An improved constant temperature and humidity testing device capable of controlling humidity and temperature of a gas flow, the improved constant temperature and humidity testing device comprising: a fan module adapted to generate a convective airflow and having two directions of rotation; a first air duct is connected to one end of the fan module, the first air duct includes: a first air rectifier, the first air rectifier is adapted to adjust the stability of the airflow in the first air duct And a first heater, wherein the first heater is used to adjust the temperature of the airflow in the first air duct; and a second air duct is connected to the other end of the fan module, The second air duct includes: a second air rectifier for adjusting stability of the airflow in the second air passage; and a second heater for heating the second air heater a humidification module, the humidification module is adapted to adjust the humidity of the airflow in the first air passage and the second air passage; and a cooling module, the cooling module is adapted to adjust the airflow Temperature of the airflow in the first air duct and the second air duct And a test area, the test area is connected to the first air duct, and the test area is connected to the second air duct; wherein the fan module is disposed in an inner casing, and is changed The direction of rotation of the fan module changes the convection direction of the airflow within the inner casing. The improved constant temperature and humidity test apparatus according to any one of claims 1 to 2, wherein the first air duct further comprises a first air buffer, the first air buffer being connected to the first air The first air buffer is adapted to adjust the uniformity of the airflow velocity in the first air passage before the rectifier; the second air duct further includes a second air buffer connected to the second air Prior to the rectifier, the second air buffer is adapted to adjust the uniformity of the airflow velocity in the second air passage. The improved constant temperature and humidity test apparatus of claim 1, wherein the wind direction adjuster comprises six air outlets, wherein the six air outlets are respectively a first air outlet, a second air outlet, and a third air outlet. a first air outlet and a sixth air outlet, wherein the first air outlet and the sixth air outlet are connected to the first air duct, the second air outlet, and the fifth air outlet are connected to the first air outlet The second air duct, the third air outlet is connected to the return air duct, and the fourth air outlet is connected to the air outlet duct. The improved constant temperature and humidity test apparatus of claim 1, wherein the rotating member of the wind direction adjuster is mounted on the stationary member. The improved constant temperature and humidity test apparatus according to claim 4, wherein the wind direction adjuster has a rotating mechanism, and the rotating mechanism is connected to the rotating member, and the rotating member is rotated by rotating the rotating member. Rotating, when in a cooling state, the wind direction adjuster is at a first angular position, the first tuyere, the third tuyere, the fourth tuyere, and the fifth tuyere are in an open state, and the second tuyere and the first tuyere The six air outlets are in a closed state, so that the air flow flows from the first air passage to the second air passage; when in the heating state, the wind direction adjuster is a second angular position, the second air outlet, the third air outlet, the first The fourth air outlet and the sixth air outlet are in an open state, and the first air outlet and the fifth air outlet are in a closed state, so that the air flow flows from the second air passage to the first air passage. The improved constant temperature and humidity test apparatus according to claim 2, wherein when the fan module rotates in a first rotation direction, the airflow can flow from the first air passage to the second air passage. When the fan module rotates in a second rotational direction, airflow can be caused to flow from the second air duct to the first air passage.