Double-layer constant temperature and humidity test chamber

Abstract

This utility model relates to the field of test chamber technology, specifically a double-layer constant temperature and humidity test chamber, including a low-temperature test chamber. A high-temperature test chamber is fixedly installed on the upper part of the low-temperature test chamber. A control system is provided on the right side of both the low-temperature test chamber and the high-temperature test chamber. A water tank is installed on the top of the high-temperature test chamber. The low-temperature test chamber includes a low-temperature test chamber body and a low-temperature chamber door hinged to the left side of the front end of the low-temperature test chamber body. A low-temperature temperature sensor group is installed on the rear surface inside the low-temperature test chamber body. This utility model allows for quick and convenient adjustment of the internal temperature and humidity of the test chamber after each opening of the chamber door to remove the test sample, preventing interference with subsequent tests. Separating the low-temperature and high-temperature settings allows the tested sample to easily and quickly experience its tolerance to different temperatures, providing a more comprehensive understanding of the test sample.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, specifically a double-layer constant temperature and humidity test chamber. Background Technology

[0002] Constant temperature test chambers are essential testing equipment in fields such as aviation, automotive, home appliances, and scientific research. They are used to test the performance of materials under various environments, and to test the heat resistance, cold resistance, dryness resistance, and humidity resistance of various materials. The lifespan of electronic components is an important standard for judging the quality of electronic equipment. The lifespan of electronic components is affected by factors such as usage time and the temperature and humidity of the working environment.

[0003] Utility model patent CN219957291U discloses a double-layer test chamber. This utility model includes a chamber body, a door, a baffle, and a movable rod. The baffle is rotatably mounted on the side wall of the first side of the test chamber via its first side, and its second side movably abuts against the side wall of the second side of the test chamber, effectively sealing the test chamber and preventing direct communication between the test chamber and the outside when the door is opened. When it is necessary to remove part of the test sample, the retrieval port is opened by sliding the sealing plate, allowing the sample to be retrieved from the test chamber. The width of the retrieval port is smaller than the width of the test chamber, reducing the air exchange rate between the test chamber and the outside air, maintaining a stable environment within the test chamber, and resulting in more accurate test results. Simultaneously, pressing the pressing block on the movable rod moves the rod into the test chamber. The test chamber can communicate with the outside through a through-hole, balancing the air pressure within the test chamber and facilitating the sliding of the sealing plate on the baffle to open the retrieval port.

[0004] While the aforementioned inventions can balance the air pressure inside the chamber and prevent temperature changes during the opening and closing process, they do not allow for convenient and rapid adjustment of the temperature and humidity inside the chamber after the door is closed. Therefore, we propose a double-layer constant temperature and humidity test chamber. Utility Model Content

[0005] This invention provides a double-layer constant temperature and humidity test chamber to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A double-layer constant temperature and humidity test chamber includes a low temperature test chamber, a high temperature test chamber is fixedly installed on the upper end of the low temperature test chamber, a control system is provided on the right side of the low temperature test chamber and the high temperature test chamber, and a water tank is installed on the top of the high temperature test chamber;

[0008] The low-temperature test chamber includes a chamber body and a low-temperature door hinged to the left front end of the chamber body. A low-temperature temperature sensor group is installed on the rear surface inside the chamber body. A compressor is fixedly installed on the lower right side wall inside the chamber body. Two low-temperature fans facing left are arranged below the compressor. A dehumidification mechanism is arranged between the two low-temperature fans. A low-temperature humidity detection sensor is installed on one side of the lower surface inside the chamber body. A low-temperature guide plate is fixedly installed at the lower end of the left side surface inside the chamber body.

[0009] As a preferred technical solution, the dehumidification mechanism includes a dehumidification box and an electric push rod disposed on the right side surface of the dehumidification box. The electric push rod is fixedly installed inside the control system, and the dehumidification box is provided with silica gel adsorbent.

[0010] This setup uses silica gel adsorbent for dehumidification, which is effective and reusable; the electric push rod controls the position of the dehumidification box, making it easy to adjust the dehumidification intensity according to the humidity inside the box.

[0011] As a preferred technical solution, the high-temperature test chamber includes a high-temperature test chamber body and a high-temperature chamber door hinged to the left side of the front end of the high-temperature test chamber body. An electric heating element is installed on the upper inner surface of the high-temperature test chamber body. Several downward-facing high-temperature fans are installed on the left end of the upper inner surface of the high-temperature test chamber body. An ultrasonic humidifier is installed on the right inner surface of the high-temperature test chamber body. A high-temperature temperature sensor group is installed on the rear inner surface of the high-temperature test chamber body. A high-temperature guide plate is installed at the lower end of the left outer surface of the high-temperature test chamber body. A high-temperature humidity detection sensor is installed on the lower surface of the high-temperature test chamber body.

[0012] This setting can monitor and adjust the temperature and humidity in the high-temperature environment inside the chamber in real time, ensuring the accuracy and stability of high-temperature testing. The high-temperature guide plate helps optimize the airflow circulation inside the chamber.

[0013] As a preferred technical solution, the ultrasonic humidifier is provided with a water inlet pipe at the top, and the top of the water inlet pipe is connected to the inside of the water tank.

[0014] This setup connects the water tank to the ultrasonic humidifier via the inlet pipe, enabling automatic water supply and eliminating the need for frequent manual refilling, thus reducing manual operation.

[0015] As a preferred technical solution, the low-temperature chamber door and the high-temperature chamber door have the same structure, both consisting of an outer layer of ordinary glass and an inner layer of thermally insulated glass, with inert gas filling the space between the two glass panes, and a sealing strip provided at the contact point between the chamber door and the chamber body.

[0016] This feature, with inert gas filling the space between the double-layered glass, effectively reduces heat exchange between the inside and outside of the enclosure.

[0017] As a preferred technical solution, both the low-temperature temperature sensor group and the high-temperature temperature sensor group use Pt100 platinum resistance temperature sensors and are electrically connected to the control system.

[0018] This setting allows the Pt100 platinum resistance temperature sensor to accurately detect the temperature inside the chamber, thanks to its high measurement accuracy, good stability, and wide applicable temperature range.

[0019] As a preferred technical solution, both the low-temperature guide plate and the high-temperature guide plate have a square with a quarter-sector structure cut off in their front view, and their side surfaces are smooth.

[0020] This feature, with its specific shape design, helps guide the airflow direction within the chamber, resulting in a more uniform airflow distribution.

[0021] As a preferred technical solution, the heating tubes are arranged in an S-shape, the high-temperature fan blows hot air downwards toward the high-temperature guide plate, and the low-temperature fan blows cold air to the left toward the low-temperature guide plate.

[0022] This setting, with the heating elements arranged in an S-shape, increases the heating area and makes the heating inside the high-temperature test chamber more uniform.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. After each time the chamber door is opened and the test sample is taken out, the temperature and humidity inside the chamber can be quickly and easily adjusted using the temperature and humidity control devices to prevent affecting the next test.

[0025] 2. Separate the low temperature and high temperature settings to allow the test specimens to easily and quickly experience their tolerance at different temperatures, and to more easily and comprehensively understand the test specimens. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the low-temperature test chamber of this utility model;

[0028] Figure 3 This is a schematic diagram of the dehumidification mechanism in this utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the high-temperature test chamber of this utility model;

[0030] Figure 5This is a schematic diagram of the water inlet pipe in this utility model;

[0031] The meanings of the labels in the diagram are as follows:

[0032] 100. Low-temperature test chamber; 110. Low-temperature test chamber body; 120. Low-temperature temperature sensor group; 130. Compressor refrigeration unit; 140. Dehumidification mechanism; 141. Dehumidification box; 142. Electric push rod; 150. Low-temperature fan; 160. Low-temperature humidity detection sensor; 170. Low-temperature guide plate; 180. Low-temperature chamber door; 200. High-temperature test chamber; 210. High-temperature test chamber body; 220. Electric heating tube; 230. High-temperature fan; 240. High-temperature chamber door; 250. High-temperature guide plate; 260. High-temperature humidity detection sensor; 270. Ultrasonic humidifier; 271. Water inlet pipe; 280. High-temperature temperature sensor group; 300. Water tank; 400. Control system. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figures 1-5 This embodiment provides a technical solution:

[0035] A double-layer constant temperature and humidity test chamber includes a low temperature test chamber 100, a high temperature test chamber 200 fixedly installed on the upper end of the low temperature test chamber 100, a control system 400 set on the right side of the low temperature test chamber 100 and the high temperature test chamber 200, and a water tank 300 installed on the top of the high temperature test chamber 200.

[0036] The low-temperature test chamber 100 includes a low-temperature test chamber body 110 and a low-temperature chamber door 180 hinged to the left side of the front end of the low-temperature test chamber body 110. A low-temperature temperature sensor group 120 is installed on the rear surface inside the low-temperature test chamber body 110. A compressor refrigeration unit 130 is fixedly installed on the lower side of the right side wall inside the low-temperature test chamber body 110. Two low-temperature fans 150 facing left are arranged below the compressor refrigeration unit 130. A dehumidification mechanism 140 is arranged between the two low-temperature fans 150. A low-temperature humidity detection sensor 160 is installed on one side of the lower surface inside the low-temperature test chamber body 110. A low-temperature guide plate 170 is fixedly installed at the lower end of the left side surface inside the low-temperature test chamber body 110.

[0037] Furthermore, such as Figure 3As shown, the dehumidification mechanism 140 includes a dehumidification box 141 and an electric push rod 142 disposed on the right side surface of the dehumidification box 141. The electric push rod 142 is fixedly installed inside the control system 400. The dehumidification box 141 is filled with silica gel adsorbent. The movement of the dehumidification box 141 is controlled by the electric push rod 142 to improve the flexibility and accuracy of dehumidification, thereby ensuring the stability of humidity inside the low temperature test chamber 100.

[0038] Furthermore, such as Figure 4 As shown, the high-temperature test chamber 200 includes a high-temperature test chamber body 210 and a high-temperature chamber door 240 hinged to the left side of the front end of the high-temperature test chamber body 210. An electric heating element 220 is installed on the upper surface inside the high-temperature test chamber body 210. Several downward-facing high-temperature fans 230 are installed on the left end of the upper surface inside the high-temperature test chamber body 210. An ultrasonic humidifier 270 is installed on the right side surface inside the high-temperature test chamber body 210. A high-temperature temperature sensor group 280 is installed on the rear side surface inside the high-temperature test chamber body 210. A high-temperature guide plate 250 is installed at the lower end of the left side surface of the high-temperature test chamber body 210. A high-temperature humidity detection sensor 260 is installed on the lower surface of the high-temperature test chamber body 210. The electric heating element 220 provides a heat source for the high-temperature test. The high-temperature fans 230 ensure even heat distribution inside the chamber. The ultrasonic humidifier 270 effectively increases the humidity inside the chamber. Together with the high-temperature temperature sensor group 280 and the high-temperature humidity detection sensor 260, the temperature and humidity under the high-temperature environment inside the chamber can be monitored and adjusted in real time.

[0039] In this embodiment, as Figure 5 As shown, the ultrasonic humidifier 270 is equipped with a water inlet pipe 271 at the top, and the top of the water inlet pipe 271 is connected to the inside of the water tank 300, which ensures the continuous and stable operation of the humidifier and improves the automation level of the high temperature test chamber 200.

[0040] In this embodiment, as Figure 2 , 4 As shown, the low-temperature chamber door 180 and the high-temperature chamber door 240 have the same structure, both consisting of an outer layer of ordinary glass and an inner layer of thermally insulated glass. Inert gas is filled between the two glass panes, and a sealing strip is installed between the door and the chamber body to prevent the temperature and humidity inside the chamber from being affected by the external environment, thus helping to maintain the stability of the environment inside the chamber. At the same time, the outer ordinary glass allows for easy observation of the test conditions inside the chamber.

[0041] In this embodiment, as Figure 2 , 4 As shown, both the low-temperature temperature sensor group 120 and the high-temperature temperature sensor group 280 use Pt100 platinum resistance temperature sensors and are electrically connected to the control system 400. After being electrically connected to the control system 400, the temperature signal can be transmitted to the control system 400 in real time, so that the control system 400 can adjust the temperature inside the chamber in a timely manner according to the set value to achieve constant temperature control.

[0042] In this embodiment, as Figure 2 , 4 As shown, both the low-temperature guide plate 170 and the high-temperature guide plate 250 are squares with a quarter-sector cut off in their front views, and their side surfaces are smooth. The smooth side surfaces can reduce airflow resistance and improve airflow circulation efficiency, thereby ensuring the uniformity of temperature and humidity inside the chamber and improving the accuracy of the test. The heating tubes 220 are distributed in an S-shape. The high-temperature fan 230 blows hot air downwards toward the high-temperature guide plate 250, and the low-temperature fan 150 blows cold air to the left toward the low-temperature guide plate 170. The shape of the guide plates can further optimize the airflow circulation path inside the chamber, making the temperature distribution inside the chamber more uniform, improving the constant temperature effect, and ensuring the stability and consistency of the test environment.

[0043] It is worth noting that the structure and working principle of the temperature sensor group, compressor 130, electric push rod 142, fan, humidity detection sensor, electric heating tube 220, and ultrasonic humidifier 270 involved in this embodiment are as known to those skilled in the art, and will not be described in detail here. The structure and working principle of the control system 400 involved in this embodiment are all technologies disclosed in the prior art, and will not be described in detail here.

[0044] In practical use of the double-layer constant temperature and humidity test chamber of this embodiment, the test product is first placed inside the chamber. Then, the control system 400 activates the heating element 220 and the compressor 130 to cool the low-temperature test chamber 100 and heat the high-temperature test chamber. The temperature sensor group monitors the temperature inside both chambers in real time. Once the designated temperature is reached, the heating element 220 and the compressor 130 are shut off. Next, the humidity inside the high-temperature test chamber 200 and the low-temperature test chamber 100 is adjusted as needed. In the high-temperature test chamber 200, under closed conditions, as the temperature rises, the ambient humidity decreases. The user observes the humidity through the high-temperature humidity sensor 26. After setting the temperature to 0, turn on the ultrasonic humidifier 270. The water will be atomized into mist by ultrasonic waves, thereby increasing the humidity inside the high-temperature test chamber 200. After adjusting to the appropriate humidity, turn off the ultrasonic humidifier 270. When adjusting the low-temperature test chamber 100, in a closed environment, the humidity will increase as the temperature decreases. While the user observes the low-temperature humidity detection sensor 160, the electric push rod 142 will be activated to push the dehumidification box 141 out of the compressor refrigeration unit 130 area. This allows the silica gel adsorbent placed in the dehumidification box 141 to adsorb the moisture in the environment to a certain extent, thus lowering the humidity. After the humidity drops to the appropriate level, turn off and retract the electric push rod 142, and wait for the test sample to be tested.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Double-layer constant temperature and humidity test chamber, comprising a low-temperature test chamber (100), characterized in that: A high temperature test chamber (200) is fixedly installed on the upper end of the low temperature test chamber (100). A control system (400) is provided on the right side of the low temperature test chamber (100) and the high temperature test chamber (200). A water tank (300) is installed on the top of the high temperature test chamber (200). The low-temperature test chamber (100) includes a low-temperature test chamber body (110) and a low-temperature chamber door (180) hinged to the left side of the front end of the low-temperature test chamber body (110). A low-temperature temperature sensor group (120) is installed on the rear surface inside the low-temperature test chamber body (110). A compressor refrigerator (130) is fixedly installed on the lower side of the right side wall inside the low-temperature test chamber body (110). Two low-temperature fans (150) facing left are arranged on the lower side of the compressor refrigerator (130). A dehumidification mechanism (140) is arranged between the two low-temperature fans (150). A low-temperature humidity detection sensor (160) is installed on one side of the lower surface inside the low-temperature test chamber body (110). A low-temperature guide plate (170) is fixedly arranged on the lower end of the left side surface inside the low-temperature test chamber body (110).

2. The dual-tier constant temperature and humidity test chamber as claimed in claim 1, wherein: The dehumidification mechanism (140) includes a dehumidification box (141) and an electric push rod (142) disposed on the right side surface of the dehumidification box (141). The electric push rod (142) is fixedly installed inside the control system (400). The dehumidification box (141) is provided with silica gel adsorbent.

3. The double-layer constant temperature and humidity test chamber as described in claim 2, characterized in that: The high temperature test chamber (200) includes a high temperature test chamber body (210) and a high temperature chamber door (240) hinged to the left side of the front end of the high temperature test chamber body (210). An electric heating tube (220) is installed on the upper surface inside the high temperature test chamber body (210). Several high temperature fans (230) facing downward are installed on the left end of the upper surface inside the high temperature test chamber body (210). An ultrasonic humidifier (270) is installed on the right side surface inside the high temperature test chamber body (210). A high temperature sensor group (280) is installed on the rear side surface inside the high temperature test chamber body (210). A high temperature guide plate (250) is installed at the lower end of the left side surface of the high temperature test chamber body (210). A high temperature humidity detection sensor (260) is installed on the lower surface of the high temperature test chamber body (210).

4. The dual-tier constant temperature and humidity test chamber as claimed in claim 3, wherein: The ultrasonic humidifier (270) is provided with a water inlet pipe (271) at the top, and the top of the water inlet pipe (271) is connected to the inside of the water tank (300).

5. The dual level constant temperature and humidity test chamber as claimed in claim 3, wherein: The low-temperature chamber door (180) has the same structure as the high-temperature chamber door (240), both being composed of an outer layer of ordinary glass and an inner layer of thermally insulated glass. Inert gas is filled between the two glass pieces, and a sealing strip is provided between the door and the chamber body.

6. The dual-tier constant temperature and humidity test chamber as claimed in claim 3, wherein: Both the low-temperature temperature sensor group (120) and the high-temperature temperature sensor group (280) use Pt100 platinum resistance temperature sensors and are electrically connected to the control system (400).

7. The dual level constant temperature and humidity test chamber as claimed in claim 3, wherein: The front view of both the low-temperature guide plate (170) and the high-temperature guide plate (250) is a square with a quarter-sector structure cut off, and the side surface is smooth.

8. The dual level constant temperature and humidity test chamber as claimed in claim 3, wherein: The heating element (220) is arranged in an S-shape. The high-temperature fan (230) blows hot air downwards toward the high-temperature guide plate (250), and the low-temperature fan (150) blows cold air to the left toward the low-temperature guide plate (170).

Images