Constant-temperature and constant-humidity test box capable of rapidly adjusting temperature and humidity

Abstract

The constant-temperature and constant-humidity test box comprises a box body, a temperature control system, a circulating system and a courtyard air supply mechanism, the temperature control system and the courtyard air supply mechanism are arranged on the two sides of the box body in parallel, and the circulating system is erected above the temperature control system and the courtyard air supply mechanism. Comprising an impeller erected above a temperature control system and a static pressure layer erected above a courtyard air supply mechanism, the top end of the impeller is connected with a long-shaft motor, and the long-shaft motor is erected on the upper end face of a box body. Therefore, the performance of the article at different temperatures can be tested and evaluated.

Description

Technical Field

[0001] The utility model relates to the field of constant temperature and humidity test chambers, and specifically, it is a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity. Background Art

[0002] The rapid temperature change test chamber is applicable to the cold resistance test of electrical and electronic products, whole machines and components, and the adaptability test under the conditions of rapid or gradual temperature change. It is especially suitable for the environmental stress screening (ESS) test of electrical and electronic products. This equipment is mainly aimed at electrical and electronic products, their components, and other materials for the adaptability test during storage, transportation, and use in high-temperature and low-temperature rapid-change environments. This test equipment is mainly used to conduct environmental simulation tests on the physical and other related characteristics of products according to national standard requirements or user-defined requirements under low-temperature and high-temperature conditions. After the test, through detection, it is judged whether the performance of the product can still meet the predetermined requirements for product design, improvement, identification, and factory inspection.

[0003] The rapid temperature change test chamber is to apply temperature acceleration techniques to change the external environmental stress under the design strength of the product, so as to generate thermal stress and strain in the product, and to make the latent defects in the product emerge through the accelerated stress, so as to avoid the product from failing due to the test of environmental stress during use and causing unnecessary losses. It has a significant effect on improving the yield rate of product shipments and reducing the number of repairs. It is applicable to aerospace products, information electronics instrumentation, materials, electrical and electronic products, etc. The rapid temperature change test can record the temperature change curve and temperature data, and detect and record the appearance and performance of the product. Specifically, during the test process, it is necessary to observe and record the appearance changes and performance of the sample, such as deformation, cracking, melting, oxidation and other reactions of the sample. In addition, it is also necessary to measure and record the temperature of the sample, and conduct an appearance inspection and performance test on the sample after the test. These data can be used to evaluate the performance and reliability of the product in a rapidly changing temperature environment. Therefore, the rapid temperature change test requires specific observation of the appearance of the detected object, etc. Summary of the Invention

[0004] Object of the Invention: The object of the utility model is to provide a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity in view of the deficiencies of the prior art.

[0005] Technical solution: The utility model relates to a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity, which comprises a box body, a temperature control system, a circulation system and a ceiling air supply mechanism. The temperature control system and the ceiling air supply mechanism are arranged side by side on both sides of the box body. The circulation system is installed above the temperature control system and the ceiling air supply mechanism, and includes an impeller installed above the temperature control system and a static pressure layer installed above the ceiling air supply mechanism. The top end of the impeller is connected to a long shaft motor, and the long shaft motor is installed on the upper end face of the box body.

[0006] Preferably, the temperature control system comprises a refrigerator and an electric heating tube, and the electric heating tube is installed above the air outlet of the refrigerator.

[0007] Preferably, a humidifying boiler is installed in the cavity between the electric heating tube and the impeller.

[0008] Preferably, a wind baffle is installed on the side of the static pressure layer opposite to the impeller, and an adjustable double-layer air supply louver is arranged between the impeller and the static pressure layer as a partition layer.

[0009] Preferably, the ceiling air supply mechanism comprises an air duct box, an air duct is arranged on the side surface of the air duct box, and a plurality of air plates are arranged on the top surface of the air duct box.

[0010] Preferably, the air plate comprises an adjustable air plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects: It can simulate the test environment under different temperature conditions in a short time, so as to test and evaluate the performance of articles at different temperatures. Description of the drawings

[0012] Figure 1 It is a structural schematic diagram of a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the ceiling air supply mechanism in a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the adjustable air plate in a constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity of the utility model.

[0015] In the figure: (1), refrigerator; (2), electric heating tube; (3), humidifying boiler; (4), impeller; (5), long shaft motor; (6), adjustable double-layer air supply louver; (7), static pressure layer; (8), wind baffle; (9), adjustable air plate. Detailed implementation mode

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0018] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection, an electrical connection, or a communication connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] The technical solutions of the present invention will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0020] A constant temperature and humidity test chamber capable of quickly adjusting temperature and humidity includes a box body, a temperature control system, a circulation system, and a ceiling air supply mechanism. The temperature control system and the ceiling air supply mechanism are arranged side by side on both sides of the box body. The circulation system is installed above the temperature control system and the ceiling air supply mechanism, and includes an impeller 4 installed above the temperature control system and a static pressure layer 7 installed above the ceiling air supply mechanism. The top of the impeller 4 is connected to a long shaft motor 5, and the long shaft motor 5 is installed on the upper end surface of the box body.

[0021] Specifically, the temperature control system includes a refrigerator 1 and an electric heating tube 2. The electric heating tube is installed above the air outlet of the refrigerator 1. A humidifying boiler 3 is installed in the cavity between the electric heating tube 2 and the impeller 4. A wind baffle 8 is installed on the side of the static pressure layer 7 opposite to the impeller 4. An adjustable double-layer air supply louver 6 is provided as a partition between the impeller 4 and the static pressure layer 7. The atrium air supply mechanism includes an air duct box. An air duct is provided on the side of the air duct box. A plurality of air plates are provided on the top surface of the air duct box. The air plates include adjustable air plates 9.

[0022] The working principle is mainly as follows:

[0023] 1. Heating system: The heating system of the rapid temperature change test chamber heats the air in the test chamber through heating elements such as electric heating wires or heating tubes. The control of the heating system reads the temperature in the test chamber through the temperature sensor in the control system and controls it according to the set temperature curve. The heating system can quickly raise the temperature of the test chamber to the set temperature;

[0024] 2. Refrigeration system: The refrigeration system consists of a compressor, a condenser, an evaporator, etc. When the test chamber needs to be rapidly cooled, the compressor in the refrigeration system starts to operate, compresses the refrigerant, generates high-temperature and high-pressure gas. The high-temperature and high-pressure gas is cooled through the condenser to form high-pressure liquid. The high-pressure liquid enters the evaporator through the throttle valve and evaporates in the evaporator, absorbing the evaporation heat, thereby reducing the temperature of the air in the test chamber;

[0025] 3. Control system: The control system is the core part of the rapid temperature change test chamber. It is mainly composed of a temperature controller, a sensor, an actuator, etc. The control system can control the operation of the heating system and the refrigeration system according to the set temperature curve, so that the temperature of the test chamber can rapidly change according to the set curve. The control system can also achieve precise control and stability of the temperature to meet different test requirements;

[0026] 4. Protection system: The protection system is mainly used to protect the safety of the test chamber and the test samples. When over-temperature, over-pressure, electric leakage and other situations occur, the protection system can issue an alarm in time to prevent the equipment and samples from being damaged. At the same time, the protection system can also actively cut off the power supply in case of abnormal situations to ensure the safety of the equipment and the test samples.

[0027] Combined with the actual product, the working process under the actual working condition is as follows: 1. Heating stage: In the heating stage, the heating system starts to work, rapidly raising the temperature in the test chamber to the set temperature. The control system monitors the temperature in the test chamber in real time through the temperature sensor and controls it according to the set temperature curve;

[0028] 2. Stable holding stage: Once the temperature inside the test chamber reaches the set temperature, the control system will stop the heating system and switch the system to the mode of maintaining the set temperature. During the process of maintaining the set temperature, the control system will make fine adjustments according to the real-time temperature data to ensure the stability and accuracy of the temperature;

[0029] 3. Rapid cooling stage: In the case of rapid cooling required, the refrigeration system starts to work. The refrigeration system rapidly reduces the temperature inside the test chamber by starting the compressor and other refrigeration components. The control system controls according to the set cooling rate and ensures that the temperature inside the test chamber can change according to the set curve;

[0030] 4. Stable holding stage: Once the temperature inside the test chamber reaches the set low temperature point, the control system will stop the refrigeration system and switch the system to the mode of maintaining the low temperature state. During the process of maintaining the low temperature, the control system will make fine adjustments according to the real-time temperature data to ensure the stability and accuracy of the temperature.

[0031] Through the above working principle and process, the rapid temperature change test chamber can simulate the test environment under different temperature conditions in a short time, so as to test and evaluate the performance of items at different temperatures.

[0032] The ceiling air supply mechanism adopted by the test chamber provided by this technical solution, in cooperation with the vertical installation at the top of the long shaft motor 5, prevents the eccentricity of the motor main shaft caused by long-term continuous operation. The impeller 4 generates air flow by rotating, and evenly blows the heated or cooled air to every corner of the test chamber. The air ducts and air dampers are responsible for guiding and controlling the flow direction and speed of the air flow to ensure the uniformity and stability of the temperature distribution inside the test chamber. The long shaft motor 5 is combined with the double-layer air supply louvers 6 with adjustable horizontal and vertical angles, which can ensure that the temperature and humidity uniformity in each corner of the chamber is more consistent. The stable and reliable water circulation supply system, through pipeline design, ensures that the air pressure, water path inside the chamber are consistent with the external atmospheric pressure, prevents the phenomenon of steam leakage. The key parts of the water path are manufactured by die-casting to prevent the water path blockage caused by water path pollution.

[0033] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first feature and the second feature are in direct contact, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature. In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0034] Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A constant temperature and humidity test chamber capable of rapid temperature and humidity adjustment, characterized in that: It includes a box body, a temperature control system, a circulation system and a ceiling air supply mechanism, wherein the temperature control system and the ceiling air supply mechanism are arranged in parallel on both sides of the box body, and the circulation system is mounted above the temperature control system and the ceiling air supply mechanism, including an impeller mounted above the temperature control system and a static pressure layer mounted above the ceiling air supply mechanism, and the top end of the impeller is connected to a long-axis motor, and the long-axis motor is mounted on the upper end surface of the box body.

2. A constant temperature and humidity test chamber capable of rapid temperature and humidity adjustment according to claim 1, characterized in that: The temperature control system comprises a refrigerator and an electric heating tube, wherein the electric heating tube is installed above the air outlet of the refrigerator.

3. A constant temperature and humidity test chamber capable of rapid temperature and humidity adjustment according to claim 2, characterized in that: A humidifying boiler is arranged in the cavity between the electric heating tube and the impeller.

4. A constant temperature and humidity test chamber capable of rapid temperature and humidity control according to claim 1, characterized in that: A windshield is arranged on the side of the static pressure layer opposite to the impeller, and an adjustable double-layer air supply louver is arranged between the impeller and the static pressure layer as a partition.

5. A constant temperature and humidity test chamber capable of rapid temperature and humidity adjustment according to claim 1, characterized in that: The ceiling air supply mechanism comprises an air duct box, an air duct is opened on the side of the air duct box, and a plurality of air plates are arranged on the top surface of the air duct box.

6. A constant temperature and humidity test chamber capable of rapid temperature and humidity control according to claim 5, characterized in that: The wind plate includes an adjustable wind plate.

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