CN112718035A - Constant temperature and humidity test box - Google Patents
Constant temperature and humidity test box Download PDFInfo
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- CN112718035A CN112718035A CN202011458768.5A CN202011458768A CN112718035A CN 112718035 A CN112718035 A CN 112718035A CN 202011458768 A CN202011458768 A CN 202011458768A CN 112718035 A CN112718035 A CN 112718035A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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Abstract
The invention relates to the technical field of test devices, in particular to a constant temperature and humidity test box. The constant temperature and humidity test chamber comprises a barrel-shaped test chamber, a base, a heating device, a refrigerating device, a humidifying device and a counterweight piston which are arranged in the vertical direction, wherein the base is provided with a bracket for mounting a sample; a test space is arranged in the test chamber and is positioned between the counterweight piston and the base; the humidifying device is used for adding wet air into the test space and comprises an atomizing device and a compressor, the atomizing device atomizes water in the water tank to generate water vapor, and the compressor presses the water vapor into the test space; the honeycomb type air conditioner also comprises a circulating fan, a honeycomb rotating wheel, a temperature sensor, a humidity sensor and a controller. According to the constant temperature and humidity test box disclosed by the invention, after water vapor is condensed and liquefied, the air pressure in the test chamber is kept constant due to the effect that the counterweight piston can freely slide under the action of gravity, and the air pressure in the test chamber can be kept stable without using an air pressure sensor.
Description
Technical Field
The invention relates to the technical field of test devices, in particular to a constant temperature and humidity test box.
Background
The constant temperature and humidity test box is a device for detecting the performance of a product under a certain constant temperature and humidity state so as to detect whether the performance of the product meets the requirements of relevant standards.
In the test process, in order to reach the preset temperature and humidity, the constant temperature and humidity test box needs to be provided with a corresponding temperature adjusting device and a corresponding humidity adjusting device to adjust the temperature and the humidity. However, there is a constant temperature, humidity and constant pressure test requirement at present, and the existing constant temperature, humidity and constant pressure test box relies on a PID closed-loop control system, feeds back to a controller after depending on a sensor to detect the air pressure of a target space, and is controlled by the controller to adjust the pressure.
Disclosure of Invention
The invention aims to provide a constant temperature and humidity test box aiming at the defects of the prior art, and the constant temperature and humidity test box can solve the problems.
In order to achieve the purpose, the constant temperature and humidity test chamber comprises a heat insulation box body and a water tank, wherein the heat insulation box body is provided with a transparent observation window, and further comprises a barrel-shaped test chamber, a base, a heating device, a refrigerating device, a humidifying device and a balance weight piston which are vertically arranged, and the base is provided with a bracket for mounting a sample; the counterweight piston is arranged at the upper end part of the barrel-shaped test chamber in a free sliding manner under the action of gravity, so that the air pressure in the test chamber is kept constant; a test space is arranged in the test chamber and is positioned between the counterweight piston and the base; the humidifying device is used for adding wet air into the test space and comprises an atomizing device and a compressor, the atomizing device atomizes water in the water tank to generate water vapor, and the compressor presses the water vapor into the test space; the heating device is used for heating the test space and the water vapor before entering the test space; the refrigerating device is used for cooling the test space and the water vapor before entering the test space; the device also comprises a circulating fan and a honeycomb rotating wheel, wherein the circulating fan is used for pumping out gas in the test space, dehumidifying the gas by the honeycomb rotating wheel and then discharging the gas into the test space again; still include temperature sensor, humidity transducer and controller, temperature sensor, humidity transducer set up in the test chamber, and heating device, refrigerating plant, humidification device, honeycomb runner, circulating fan, temperature sensor, humidity transducer all with controller signal of telecommunication connection.
Furthermore, the constant temperature and humidity test box comprises an electrothermal barrel with a variable diameter, wherein the test chamber is positioned inside the electrothermal barrel, the electrothermal barrel comprises a plurality of arc-shaped electrothermal sheets, and the arc-shaped electrothermal sheets are sequentially overlapped end to form the cylindrical electrothermal barrel; also comprises an umbrella frame component which can adjust the diameter of the electric heating barrel by adjusting the position of the electric heating piece.
Furthermore, the constant temperature and humidity test box comprises an umbrella framework assembly, a fixing shaft, a sliding sleeve, a push-pull rod and a plurality of support rods, wherein the sliding sleeve is arranged on the fixing shaft in a sliding manner; two ends of the supporting rod are respectively hinged to the fixed shaft and the arc-shaped electric heating piece, two ends of the push-pull rod are respectively hinged to the sliding sleeve and the middle part of the supporting rod, and when the sliding sleeve slides along the fixed shaft, the position of the arc-shaped electric heating piece can be adjusted through the swinging of the push-pull supporting rod; the umbrella frame components are symmetrically provided with two groups which are respectively positioned at two ends of the electric heating barrel.
Further, the constant temperature and humidity test chamber provided by the invention has the advantage that the atomization device comprises an ultrasonic atomizer.
Furthermore, the constant temperature and humidity test box of the invention comprises a sealed water tank and a water pumping and supplying device for adjusting the gravity of the counterweight piston by adjusting the water amount in the water tank, wherein the water pumping and supplying device comprises a pipeline and a water pump, and the pipeline is connected with the water tank.
Furthermore, the constant temperature and humidity test box also comprises a metering injection device, wherein the metering injection device is arranged between the atomization device and the water tank and is used for controlling the amount of liquid injected into the atomization device; the metering injection device comprises a metering pipe body, a first piston and a second piston, wherein a liquid inlet and a liquid outlet are respectively formed in two ends of the metering pipe body, the first piston and the second piston are respectively arranged at two ends of the metering pipe body in a sliding mode, and the metering injection device further comprises a first power device and a second power device which are used for respectively pushing the first piston and the second piston.
The invention has the beneficial effects that: according to the constant temperature and humidity test chamber, the test space is used for testing a tested object, the base and the counterweight piston seal two ends of the test chamber, and after moisture is introduced into the test space, even if the moisture is condensed and liquefied, the counterweight piston can freely slide under the action of gravity, so that the air pressure in the test chamber is kept constant; the constant temperature and humidity test chamber can keep the air pressure in the test chamber stable without using an air pressure sensor.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic sectional structure view of the test chamber of the present invention.
Fig. 3 is a schematic top view of the electric heating barrel of the present invention.
The reference numerals include:
0-test space
1-Heat insulation box 2-observation window
3-electric heating device 31-arc electric heating piece
4-test chamber 5-base 6-honeycomb runner
7-a humidifying device 8-a counterweight piston 9-a circulating fan.
Detailed Description
The present invention is described in detail below with reference to the attached drawings.
As shown in fig. 1-3, the constant temperature and humidity test chamber of the present invention comprises a heat insulation box body 1 and a water tank, wherein the heat insulation box body 1 is provided with a transparent observation window 2, and further comprises a barrel-shaped test chamber 4, a base 5, a heating device, a refrigerating device, a humidifying device 7 and a counterweight piston 8 which are vertically arranged, and the base 5 is provided with a bracket for mounting a sample; the counterweight piston 8 is arranged at the upper end part of the barrel-shaped test chamber 4 and can freely slide under the action of gravity, so that the air pressure in the test chamber 4 is kept constant; a test space 0 is arranged in the test chamber 4, and the test space 0 is positioned between the counterweight piston 8 and the base 5; the humidifying device 7 is used for adding wet air into the test space 0, the humidifying device 7 comprises an atomizing device and a compressor, the atomizing device atomizes water in the water tank to generate water vapor, and the compressor presses the water vapor into the test space 0; the heating device is used for heating the test space 0 and water vapor before entering the test space 0; the refrigerating device is used for cooling the test space 0 and the water vapor before entering the test space 0; the test device also comprises a circulating fan 9 and a honeycomb rotating wheel 6, wherein the circulating fan 9 is used for pumping out gas in the test space 0, dehumidifying the gas by the honeycomb rotating wheel 6 and then discharging the gas into the test space 0 again; still include temperature sensor, humidity transducer and controller, temperature sensor, humidity transducer set up in experimental cabin 4, and heating device, refrigerating plant, humidification device 7, honeycomb runner 6, circulating fan 9, temperature sensor, humidity transducer all with controller signal of telecommunication connection.
According to the constant temperature and humidity test box, the test space 0 is used for testing a tested object, the base 5 and the counterweight piston 8 seal two ends of the test chamber 4, and after moisture is introduced into the test space 0, even if the moisture condenses and liquefies, the counterweight piston 8 can freely slide under the action of gravity, so that the air pressure in the test chamber 4 is kept constant; the constant temperature and humidity test chamber can keep the air pressure in the test chamber 4 stable without using an air pressure sensor.
The honeycomb rotating wheel 6 is used for reducing the humidity of the gas flowing through, and the controller can control the temperature and the humidity in the test chamber 4 by controlling the heating device, the refrigerating device, the humidifying device 7, the honeycomb rotating wheel 6 and the circulating fan 9, so that the test space 0 is kept at a constant temperature and humidity.
Further, the constant temperature and humidity test box of the invention comprises a heating device comprising an electric heating barrel with variable diameter, the test chamber 4 is positioned inside the electric heating barrel, the electric heating barrel comprises a plurality of arc-shaped electric heating pieces 31, and the arc-shaped electric heating pieces 31 are sequentially overlapped end to form the cylindrical electric heating barrel; also comprises an umbrella frame component which can adjust the diameter of the electric heating barrel by adjusting the position of the electric heating piece. According to the constant temperature and humidity test box disclosed by the invention, the diameter of the electric heating barrel is variable, so that the arc-shaped electric heating piece 31 can be quickly away from the test chamber 4 when the temperature needs to be reduced, and the heat load of a refrigerating device is reduced. Meanwhile, the test chamber 4 is surrounded by the plurality of arc-shaped electric heating sheets 31 to heat the test chamber 4, the temperature in the test chamber 4 is uniformly distributed, and the electric heating test chamber is particularly suitable for the test chamber 4 with larger size. Meanwhile, the circulating fan 9, the test space 0 and the honeycomb rotating wheel 6 are connected through a three-way valve, so that the circulating fan 9 can directly circulate the gas in the test space 0 back to the test space 0 without passing through the honeycomb rotating wheel 6, and the uniformity of the temperature and the humidity of the test space 0 is further improved.
Furthermore, the constant temperature and humidity test box comprises an umbrella framework assembly, a fixing shaft, a sliding sleeve, a push-pull rod and a plurality of support rods, wherein the sliding sleeve is arranged on the fixing shaft in a sliding manner; the two ends of the supporting rod are respectively hinged with the fixed shaft and the arc-shaped electric heating piece 31, the two ends of the push-pull rod are respectively hinged with the sliding sleeve and the middle part of the supporting rod, and when the sliding sleeve slides along the fixed shaft, the position of the arc-shaped electric heating piece 31 can be adjusted through the swinging of the push-pull supporting rod; the umbrella frame components are symmetrically provided with two groups which are respectively positioned at two ends of the electric heating barrel, and the umbrella frame components also comprise motor components for pushing the sliding sleeve to slide along the fixed shaft.
Further, the constant temperature and humidity test chamber provided by the invention has the advantage that the atomization device comprises an ultrasonic atomizer.
Further, in the constant temperature and humidity test box of the present invention, the counterweight piston 8 includes a sealed water tank, and further includes a water pumping and supplying device for adjusting the gravity of the counterweight piston 8 by adjusting the amount of water in the water tank, the water pumping and supplying device includes a pipeline and a water pump, and the pipeline is connected with the water tank. The constant temperature and humidity test box can meet different constant air pressure requirements of a test space 0.
Furthermore, the constant temperature and humidity test box also comprises a metering injection device, wherein the metering injection device is arranged between the atomization device and the water tank and is used for controlling the amount of liquid injected into the atomization device; the metering injection device comprises a metering pipe body, a first piston and a second piston, wherein a liquid inlet and a liquid outlet are respectively formed in two ends of the metering pipe body, the first piston and the second piston are respectively arranged at two ends of the metering pipe body in a sliding mode, and the metering injection device further comprises a first power device and a second power device which are used for respectively pushing the first piston and the second piston.
In conclusion, the present invention has the above-mentioned excellent characteristics, so that it can be used to enhance the performance of the prior art and has practicability, and becomes a product with practical value.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (6)
1. Constant temperature and humidity test box, including thermal-insulated box and water tank, thermal-insulated box is provided with transparent observation window, its characterized in that: the test device also comprises a barrel-shaped test cabin, a base, a heating device, a refrigerating device, a humidifying device and a counterweight piston which are arranged in the vertical direction, wherein the base is provided with a bracket for mounting a sample; the counterweight piston is arranged at the upper end part of the barrel-shaped test chamber in a free sliding manner under the action of gravity, so that the air pressure in the test chamber is kept constant; a test space is arranged in the test chamber and is positioned between the counterweight piston and the base;
the humidifying device is used for adding wet air into the test space and comprises an atomizing device and a compressor, the atomizing device atomizes water in the water tank to generate water vapor, and the compressor presses the water vapor into the test space;
the heating device is used for heating the test space and the water vapor before entering the test space;
the refrigerating device is used for cooling the test space and the water vapor before entering the test space;
the device also comprises a circulating fan and a honeycomb rotating wheel, wherein the circulating fan is used for pumping out gas in the test space, dehumidifying the gas by the honeycomb rotating wheel and then discharging the gas into the test space again;
still include temperature sensor, humidity transducer and controller, temperature sensor, humidity transducer set up in the test chamber, and heating device, refrigerating plant, humidification device, honeycomb runner, circulating fan, temperature sensor, humidity transducer all with controller signal of telecommunication connection.
2. The constant temperature and humidity test chamber of claim 1, wherein: the heating device comprises an electric heating barrel with variable diameter, the test chamber is positioned inside the electric heating barrel, the electric heating barrel comprises a plurality of arc-shaped electric heating pieces, and the arc-shaped electric heating pieces are sequentially overlapped end to form the barrel-shaped electric heating barrel; also comprises an umbrella frame component which can adjust the diameter of the electric heating barrel by adjusting the position of the electric heating piece.
3. The constant temperature and humidity test chamber of claim 2, wherein: the umbrella framework assembly comprises a fixed shaft, a sliding sleeve, a push-pull rod and a plurality of support rods, and the sliding sleeve is arranged on the fixed shaft in a sliding manner; two ends of the supporting rod are respectively hinged to the fixed shaft and the arc-shaped electric heating piece, two ends of the push-pull rod are respectively hinged to the sliding sleeve and the middle part of the supporting rod, and when the sliding sleeve slides along the fixed shaft, the position of the arc-shaped electric heating piece can be adjusted through the swinging of the push-pull supporting rod; the umbrella frame components are symmetrically provided with two groups which are respectively positioned at two ends of the electric heating barrel.
4. The constant temperature and humidity test chamber of claim 1, wherein: the atomization device comprises an ultrasonic atomizer.
5. The constant temperature and humidity test chamber of claim 1, wherein: the counterweight piston comprises a sealed water tank and a water pumping and supplying device for adjusting the gravity of the counterweight piston by adjusting the water amount in the water tank, wherein the water pumping and supplying device comprises a pipeline and a water pump, and the pipeline is connected with the water tank.
6. The constant temperature and humidity test chamber of claim 1, wherein: the metering injection device is arranged between the atomization device and the water tank and is used for controlling the amount of liquid injected into the atomization device; the metering injection device comprises a metering pipe body, a first piston and a second piston, wherein a liquid inlet and a liquid outlet are respectively formed in two ends of the metering pipe body, the first piston and the second piston are respectively arranged at two ends of the metering pipe body in a sliding mode, and the metering injection device further comprises a first power device and a second power device which are used for respectively pushing the first piston and the second piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458768.5A CN112718035B (en) | 2020-12-11 | 2020-12-11 | Constant temperature and humidity test box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011458768.5A CN112718035B (en) | 2020-12-11 | 2020-12-11 | Constant temperature and humidity test box |
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| Publication Number | Publication Date |
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| CN112718035A true CN112718035A (en) | 2021-04-30 |
| CN112718035B CN112718035B (en) | 2022-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011458768.5A Active CN112718035B (en) | 2020-12-11 | 2020-12-11 | Constant temperature and humidity test box |
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| US20040025691A1 (en) * | 2002-08-07 | 2004-02-12 | Andrew Corporation | Pressure equalization apparatus and methods |
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| CN109622073A (en) * | 2018-12-27 | 2019-04-16 | 北京工商大学 | A kind of temperature, humidity, pressure adjustable experiment environment box |
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2020
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Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040025691A1 (en) * | 2002-08-07 | 2004-02-12 | Andrew Corporation | Pressure equalization apparatus and methods |
| CN2821499Y (en) * | 2005-04-29 | 2006-09-27 | 东莞信易电热机械有限公司 | Honeycomb type ehumidifier |
| CN202460643U (en) * | 2012-01-06 | 2012-10-03 | 广州东之旭试验设备有限公司 | Constant temperature and constant humidity test chamber |
| CN205091081U (en) * | 2015-10-29 | 2016-03-16 | 何开芳 | Barometer |
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| CN112718035B (en) | 2022-06-21 |
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