High-low-temperature low-humidity test box with rapid temperature change
By combining the sliding fit structure of the U-shaped placement rack and the insulation rack with the PLC controller, the problem of temperature crossflow in the high and low temperature rapid temperature change test chamber was solved, achieving environmental stability and low humidity, shortening the test cycle and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHU ENVIRONMENTAL TESTING EQUIP CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-04-24
AI Technical Summary
Existing high and low temperature rapid temperature change test chambers are prone to temperature cross-flow when switching components between high temperature chambers and low temperature chambers, leading to environmental problems.
The system employs a sliding fit structure between a U-shaped placement rack and an insulation rack, combined with the embedded sealing of double-sided U-shaped sealing racks. It works in conjunction with a PLC controller to achieve isolation between high and low temperature environments. Furthermore, it utilizes a zoned temperature control design for the heating element and condenser tube, along with dehumidification components and a pressure relief system, to ensure environmental stability and humidity control.
It effectively avoids the neutralization problem of high and low temperature environments, achieves environmental stability and low humidity during rapid temperature change, shortens the testing cycle, and reduces the cost of use.
Smart Images
Figure CN224156884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of test chamber technology, specifically a high and low temperature and low humidity test chamber with rapid temperature change. Background Technology
[0002] Electronic components are the building blocks of electronic parts and small machines and instruments. They are usually composed of several parts and are interchangeable in similar products. They often refer to certain parts in industries such as electrical appliances, radio, and instrumentation, and are a general term for electronic devices such as capacitors, transistors, hairsprings, and mainsprings. Common examples include diodes. With technological advancements, components need to be used in different environments. In nature, components operate in areas where temperatures fluctuate between high and low temperatures, thus requiring the use of rapid high and low temperature change devices to monitor their operational status.
[0003] The high and low temperature rapid temperature change test chamber contains a low temperature chamber and a high temperature chamber. When testing components using the high and low temperature rapid temperature change test chamber, the components are placed inside the high temperature chamber for testing, and then quickly moved to the low temperature chamber. When changing the position of the components, an opening needs to be formed between the high temperature chamber and the low temperature chamber to facilitate the movement of the components. However, when a passage is formed between the high temperature chamber and the low temperature chamber, the temperatures inside the high temperature chamber and the low temperature chamber will flow between each other. This temperature flow will cause a temperature neutralization problem, and the temperature inside the low temperature chamber and the high temperature chamber will change. Therefore, we propose a high and low temperature low humidity test chamber with rapid temperature change. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a high and low temperature and low humidity test chamber with rapid temperature change, which can avoid the problem of neutralization in high and low temperature environments and can effectively solve the problems in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high and low temperature and low humidity test chamber with rapid temperature change, comprising a chamber body and an adjustment component;
[0006] Cabinet: Two corresponding temperature and humidity sensors are installed inside. Evenly distributed electric heating tubes are installed at the rear left side of the cabinet. Two corresponding sensing components are installed on the left and right sides of the cabinet. A cooling component is installed at the rear right side of the cabinet. Two corresponding dehumidification components are installed on the upper side of the cabinet.
[0007] Adjustment Components: Includes an insulation frame, a U-shaped placement frame, a U-shaped sealing frame, a limiting rod, a threaded rod, and a motor. The insulation frame is fixed inside the housing, positioned between two temperature and humidity sensors. All heating elements are located on the left side of the insulation frame. A U-shaped placement frame is slidably connected inside the insulation frame, fitting snugly against it. A limiting hole is provided on the rear side of the U-shaped placement frame, and a limiting rod is slidably connected inside this hole. The limiting rod is fixed inside the housing. A threaded rod is provided on the front side of the U-shaped placement frame. The hole has a threaded rod connected to its internal thread. The threaded rod is rotatably connected to the inside of the box. A motor is installed on the right side of the box. The output shaft of the motor is fixed to the right end of the threaded rod. Two corresponding U-shaped sealing frames are fixed on the left and right sides of the U-shaped placement frame. The right U-shaped sealing frame fits into the right side of the insulation frame. The test material is moved by setting an adjustment component. During its movement, the U-shaped placement frame will seal the opening in the middle of the insulation frame. After sealing, the problem of neutralization in high and low temperature environments during the test can be avoided.
[0008] Wherein: the input end of the heating element is electrically connected to the output end of an external PLC controller, and the temperature and humidity sensor is bidirectionally electrically connected to the external PLC controller.
[0009] Furthermore, the sensing component includes a storage tank and a pressure sensor. Two corresponding storage tanks are opened on the left and right sides inside the housing. A pressure sensor is installed inside the storage tank. The pressure sensor on the left side is attached to the left side of the U-shaped placement rack. The U-shaped sealing rack on the left side is located inside the storage tank on the left side. The pressure sensor is bidirectionally electrically connected to an external PLC controller. The position of the U-shaped placement rack is sensed by setting the sensing component.
[0010] Furthermore, the cooling assembly includes a condenser pipe and connecting flange rings. The condenser pipe is fixed on the right side of the chamber and is located on the right side of the insulation frame. Two corresponding openings are opened on the right side of the chamber, and the two ends of the condenser pipe are located inside the two openings. Two corresponding connecting flange rings are fixed on the circumferential surface of the condenser pipe. The cooling assembly is used to cool the right side of the chamber.
[0011] Furthermore, the dehumidification assembly includes a mesh plate, calcium chloride blocks, a barrier frame, an electric telescopic rod, and connecting strips. Two corresponding storage slots are formed on the upper side of the housing, and the insulation rack is located between the two storage slots. A mesh plate is fixed to the lower side of the storage slot, and a calcium chloride block is placed on the upper side of the mesh plate. Four corresponding guide slots are formed on the upper side of the housing, and two corresponding barrier frames are slidably connected inside the four guide slots. The barrier frames are fitted against the lower side of the mesh plate, and connecting strips are fixed to the lower side of the barrier frames. Two [unclear text - possibly related to a specific component or component] are installed on the rear side of the housing. Correspondingly, the telescopic arms of the two electric telescopic rods are fixed to the rear sides of the two connecting strips. The input end of the electric telescopic rod is electrically connected to the output end of the external PLC controller. By setting a dehumidification component, when the humidity inside the chamber is too high, the external PLC controller will automatically control the electric telescopic rod. The electric telescopic rod retracts, causing the barrier frame to move away from the mesh plate, thereby allowing the calcium chloride block to communicate with the inner cavity of the chamber. In this case, the calcium chloride block can dehumidify the inside of the chamber. After dehumidification, it can ensure that the inside of the chamber is a low-humidity environment when conducting high and low temperature tests.
[0012] Furthermore, a baffle is hinged to the front side of the box, and a mechanical lock is installed on the right side of the baffle. The mechanical lock is connected to the box, and the box is sealed by setting the baffle.
[0013] Furthermore, a pressure relief hole is provided on the left side of the box body, and a pressure relief pipe is fixed inside the pressure relief hole. A pressure relief valve is installed at the left end of the pressure relief pipe, and pressure is relieved by setting the pressure relief valve.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This rapid temperature change high and low temperature and low humidity test chamber has the following advantages:
[0015] 1. The sliding fit structure of the U-shaped placement rack and the temperature insulation rack, combined with the embedded seal of the double-sided U-shaped sealing rack, continuously maintains the isolation between the high and low temperature chambers during sample transfer, effectively solving the temperature neutralization problem caused by the interconnection of chambers in traditional equipment, and ensuring the stability of the test environment;
[0016] 2. It adopts a zoned temperature control design for heating elements and condenser elements, combined with precise PLC control, to achieve rapid switching of temperatures over a wide range; compared with traditional equipment, it significantly shortens the testing cycle and meets the needs of extreme environment simulation.
[0017] 3. The dual dehumidification components, in conjunction with the electric telescopic rod, can automatically trigger the dehumidification program when the humidity exceeds the standard, quickly reducing the humidity to a low level; the modular design simplifies the maintenance process and reduces the cost of use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the adjustment component structure of this utility model;
[0020] Figure 3 This is a schematic diagram of the sensing component structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the dehumidification component of this utility model.
[0022] In the diagram: 1. Box body; 2. Temperature and humidity sensor; 3. Heating element; 4. Adjustment component; 41. Insulation rack; 42. U-shaped placement rack; 43. U-shaped sealing rack; 44. Limiting rod; 45. Threaded rod; 46. Motor; 5. Sensing component; 51. Storage tank; 52. Pressure sensor; 6. Cooling component; 61. Condenser pipe; 62. Connecting flange ring; 7. Dehumidification component; 71. Mesh plate; 72. Calcium chloride block; 73. Barrier frame; 74. Electric telescopic rod; 75. Connecting strip; 8. Baffle; 9. Mechanical lock; 10. Pressure relief pipe; 11. Pressure relief valve. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0024] Please see Figure 1-4 This embodiment provides a technical solution: a high and low temperature and low humidity test chamber with rapid temperature change, including a chamber body 1 and an adjustment component 4;
[0025] Cabinet 1: Two corresponding temperature and humidity sensors 2 are installed inside. Evenly distributed heating elements 3 are installed at the rear left side of cabinet 1. Two corresponding sensing components 5 are installed on the left and right sides of cabinet 1. A cooling component 6 is installed at the rear right side of cabinet 1. Two corresponding dehumidification components 7 are installed on the upper side of cabinet 1. The sensing component 5 includes a storage tank 51 and a pressure sensor 52. Two corresponding storage tanks 51 are opened on the left and right sides of cabinet 1. Pressure sensors 52 are installed inside the storage tanks 51. The pressure sensor 52 on the left side is attached to the left side of the U-shaped placement rack 42. The sealing frame 43 is located inside the storage tank 51 on the left. The pressure sensor 52 is bidirectionally electrically connected to the external PLC controller. The cooling assembly 6 includes a condenser pipe 61 and a connecting flange ring 62. The condenser pipe 61 is fixed on the right side inside the housing 1. The condenser pipe 61 is located on the right side of the insulation frame 41. Two corresponding openings are opened on the right side of the housing 1. The two ends of the condenser pipe 61 are located inside the two openings. Two corresponding connecting flange rings 62 are fixed on the circumferential surface of the condenser pipe 61. The dehumidification assembly 7 includes a mesh plate 71, a calcium chloride block 72, a barrier frame 73, an electric telescopic rod 74, and a connecting strip 75. The upper side of the inside of the housing 1 is open. The enclosure has two corresponding storage tanks, with an insulation rack 41 located between them. A mesh plate 71 is fixed to the lower side of the storage tank, and a calcium chloride block 72 is placed on the upper side of the mesh plate 71. Four corresponding guide slots are provided on the upper side of the enclosure 1. Two corresponding barrier frames 73 are slidably connected inside the four guide slots. The barrier frames 73 are in contact with the lower side of the mesh plate 71, and a connecting strip 75 is fixed to the lower side of the barrier frames 73. Two corresponding electric telescopic rods 74 are installed on the rear side of the enclosure 1. The telescopic arms of the two electric telescopic rods 74 are respectively fixed to the rear side of the two connecting strips 75. The input end of the electric telescopic rod 74 is electrically connected to... The output of the external PLC controller is connected. By setting the dehumidification component 7, when the humidity inside the chamber 1 is too high, the external PLC controller will automatically control the electric telescopic rod 74. The electric telescopic rod 74 retracts, causing the barrier frame 73 to move away from the mesh plate 71, thereby making the calcium chloride block 72 communicate with the inner cavity of the chamber 1. In this case, the calcium chloride block 72 can dehumidify the inside of the chamber 1. After dehumidification, it can be ensured that the inside of the chamber 1 is a low-humidity environment when conducting high and low temperature tests. The cooling component 6 is set to cool the right side of the inside of the chamber 1. The position of the U-shaped placement rack 42 is sensed by the sensing component 5.
[0026] Adjustment component 4 includes an insulation frame 41, a U-shaped placement frame 42, a U-shaped sealing frame 43, a limiting rod 44, a threaded rod 45, and a motor 46. The insulation frame 41 is fixed inside the housing 1, located between two temperature and humidity sensors 2. All heating elements 3 are located on the left side of the insulation frame 41. The U-shaped placement frame 42 is slidably connected inside the insulation frame 41, fitting snugly against it. A limiting hole is provided on the rear side of the U-shaped placement frame 42, and a limiting rod 44 is slidably connected inside the limiting hole. The limiting rod 44 is fixed inside the housing 1. A limiting hole is provided on the front side of the U-shaped placement frame 42. A threaded hole is provided, and a threaded rod 45 is connected to the threaded hole. The threaded rod 45 is rotatably connected to the inside of the box 1. A motor 46 is installed on the right side of the box 1. The output shaft of the motor 46 is fixed to the right end of the threaded rod 45. Two corresponding U-shaped sealing frames 43 are fixed on the left and right sides of the U-shaped placement frame 42. The right U-shaped sealing frame 43 is in contact with the right side of the heat insulation frame 41. The test material is moved by the adjustment component 4. During its movement, the U-shaped placement frame 42 will seal the opening in the middle of the heat insulation frame 41. After sealing, the problem of neutralization in the high and low temperature environment during the test can be avoided.
[0027] Among them: the input end of the heating element 3 is electrically connected to the output end of the external PLC controller, and the temperature and humidity sensor 2 is bidirectionally electrically connected to the external PLC controller.
[0028] Among them: a baffle 8 is hinged to the front side of the box 1, and a mechanical lock 9 is installed on the right side of the baffle 8. The mechanical lock 9 is connected to the box 1, and the box 1 is sealed by setting the baffle 8.
[0029] Wherein: a pressure relief hole is provided on the left side of the housing 1, and a pressure relief pipe 10 is fixed inside the pressure relief hole. A pressure relief valve 11 is installed at the left end of the pressure relief pipe 10, and pressure is relieved by setting the pressure relief valve 11.
[0030] The working principle of the high, low temperature and low humidity test chamber with rapid temperature change provided by this utility model is as follows: After setting the target parameters through an external PLC controller, the temperature and humidity sensor 2 monitors the environment inside the chamber 1 in real time. The left chamber is heated by the electric heating tube 3 to form a high temperature zone, while the right chamber is maintained at a low temperature through the condenser pipe 61 of the external cooling source connected to the flange ring 62. During the test, the sample is placed in the U-shaped placement rack 42, the baffle 8 is closed, and the motor 46 is started to drive the threaded rod 45 to rotate, so that the U-shaped placement rack 42 moves horizontally along the insulation rack 41. The limit rod 44 ensures the stability of the displacement trajectory. When the pressure sensor 52 detects that the U-shaped sealing rack 43 is embedded in the storage tank 51, the motor 46 stops. At this time, the insulation rack 41 divides the chamber into independent temperature zones. During the high temperature test, the electric heating tube 3 dynamically adjusts its power according to the feedback from the sensor 2. During the low temperature transition, the motor 46 reverses and drives the U-shaped placement rack 42 to move to the right chamber. After the movement, the U-shaped sealing rack 43 seals the opening of the insulation rack 41 to avoid temperature neutralization. When humidity exceeds the standard, the electric telescopic rod 74 pulls the barrier frame 73 backward, causing the calcium chloride block 72 on the mesh plate 71 to absorb moisture. After the test is completed, the barrier frame 73 is reset to protect the dehumidifying material. The pressure relief valve 11 automatically adjusts the pressure inside the chamber through the pressure relief pipe 10. The mechanical lock 9 and the pressure sensor 52 work together to ensure operational safety and achieve rapid switching between high and low temperatures and precise control of low humidity environments.
[0031] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The temperature and humidity sensor 2, heating element 3, motor 46, pressure sensor 52, and electric telescopic rod 74 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the heating element 3, motor 46, and electric telescopic rod 74 using methods commonly used in the prior art.
[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A high-low temperature and low-humidity test chamber with rapid temperature change, characterized in that: Includes housing (1) and adjustment assembly (4); Box (1): Two corresponding temperature and humidity sensors (2) are installed inside. Electric heating tubes (3) are evenly distributed on the rear end of the left side inside the box (1). Two corresponding sensing components (5) are installed on the left and right sides inside the box (1). A cooling component (6) is installed on the rear end of the right side inside the box (1). Two corresponding dehumidification components (7) are installed on the upper side inside the box (1). Adjustment component (4): includes a heat insulation frame (41), a U-shaped placement frame (42), a U-shaped sealing frame (43), a limiting rod (44), a threaded rod (45), and a motor (46). The heat insulation frame (41) is fixed inside the housing (1). The heat insulation frame (41) is located between two temperature and humidity sensors (2). All the heating elements (3) are located on the left side of the heat insulation frame (41). The U-shaped placement frame (42) is slidably connected inside the heat insulation frame (41). The U-shaped placement frame (42) is in contact with the heat insulation frame (41). A limiting hole is opened on the rear side of the U-shaped placement frame (42). The inner side of the limiting hole... A sliding connection is provided with a limiting rod (44), which is fixed inside the box (1). A threaded hole is provided on the front side of the U-shaped placement rack (42), and a threaded rod (45) is threaded inside the threaded hole. The threaded rod (45) is rotatably connected inside the box (1). A motor (46) is installed on the right side of the box (1), and the output shaft of the motor (46) is fixed to the right end of the threaded rod (45). Two corresponding U-shaped sealing frames (43) are fixed on the left and right sides of the U-shaped placement rack (42), and the right U-shaped sealing frame (43) is in contact with the right side of the insulation frame (41). Wherein: the input end of the electric heating tube (3) is electrically connected to the output end of the external PLC controller, and the temperature and humidity sensor (2) is bidirectionally electrically connected to the external PLC controller.
2. The high and low temperature humidity test chamber with rapid temperature change according to claim 1, characterized in that: The sensing component (5) includes a storage tank (51) and a pressure sensor (52). Two corresponding storage tanks (51) are opened on the left and right sides inside the housing (1). The pressure sensor (52) is installed inside the storage tank (51). The pressure sensor (52) on the left side is attached to the left side of the U-shaped placement rack (42). The U-shaped sealing rack (43) on the left side is located inside the storage tank (51) on the left side. The pressure sensor (52) is bidirectionally electrically connected to the external PLC controller.
3. The high and low temperature humidity test chamber for rapid temperature change according to claim 1, characterized in that: The cooling assembly (6) includes a condenser tube (61) and a connecting flange ring (62). The condenser tube (61) is fixed on the right side inside the housing (1). The condenser tube (61) is located on the right side of the insulation frame (41). Two corresponding openings are opened on the right side of the housing (1). The two ends of the condenser tube (61) are located inside the two openings. Two corresponding connecting flange rings (62) are fixed on the circumferential surface of the condenser tube (61).
4. The high and low temperature humidity test chamber for rapid temperature change according to claim 1, characterized in that: The dehumidification component (7) includes a mesh plate (71), a calcium chloride block (72), a barrier frame (73), an electric telescopic rod (74), and a connecting strip (75). Two corresponding storage slots are opened on the upper side of the inside of the box (1). The insulation rack (41) is located between the two storage slots. The mesh plate (71) is fixed on the lower side of the inside of the storage slot. The calcium chloride block (72) is placed on the upper side of the mesh plate (71). Four corresponding guide slots are opened on the upper side of the box (1). Two corresponding barrier frames (73) are slidably connected inside the four guide slots. The barrier frames (73) are attached to the lower side of the mesh plate (71). A connecting strip (75) is fixed on the lower side of the barrier frames (73). Two corresponding electric telescopic rods (74) are installed on the rear side of the inside of the box (1). The telescopic arms of the two electric telescopic rods (74) are respectively fixed on the rear side of the two connecting strips (75). The input end of the electric telescopic rod (74) is electrically connected to the output end of the external PLC controller.
5. The high and low temperature humidity test chamber for rapid temperature change according to claim 1, characterized in that: A baffle (8) is hinged to the front side of the box (1), and a mechanical lock (9) is installed on the right side of the baffle (8). The mechanical lock (9) is connected to the box (1).
6. The high and low temperature humidity test chamber for rapid temperature change according to claim 1, characterized in that: The box (1) has a pressure relief hole on the left side, and a pressure relief pipe (10) is fixed inside the pressure relief hole. A pressure relief valve (11) is installed at the left end of the pressure relief pipe (10).