Airflow-optimized high and low temperature damp heat test box

Abstract

The utility model relates to a high and low temperature damp heat test box with optimized airflow, and belongs to the technical field of laboratory detection equipment. The device comprises a box body, a box door, an observation window, an air supply system, a flow guide mechanism, a sample table and a humidifying mechanism, wherein the air supply system can input airflow with different temperatures, the flow guide mechanism optimizes airflow distribution through flow guide plates and spoilers which are arranged in a staggered mode, the humidifying mechanism increases humidity through atomizing nozzles surrounding a sample table, the air supply system comprises a hot air mechanism and a cold air mechanism, and the proportion of cold air and hot air is adjusted through a control switch. The problems of poor temperature uniformity, air flow dead angles and abnormal frosting on the surface of the sample are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory testing equipment technology, and in particular to a high and low temperature humidity test chamber with optimized airflow. Background Technology

[0002] With the development of technology in the field of industrial testing and quality control, high and low temperature humidity test chambers, as important testing equipment for simulating the performance changes of materials and products under different temperature conditions, are constantly being innovated.

[0003] In related technologies, high and low temperature humidity test chambers mainly have the following problems:

[0004] Insufficient temperature uniformity results in uneven airflow distribution after cold / hot gases enter through the air inlet, affecting the test results.

[0005] The internal structure of the test chamber has dead air zones, which leads to poor air circulation and uneven heating / cooling of the test samples.

[0006] High wind speeds cause frost formation. Although reducing the fan speed can alleviate frost formation on the sample surface to some extent, it also sacrifices the airflow speed and temperature response speed inside the test chamber, reducing test efficiency.

[0007] Therefore, it is urgent to develop a high and low temperature humidity test chamber with optimized airflow. Utility Model Content

[0008] In response to the shortcomings of the existing production technology, the applicant provides a high and low temperature humidity test chamber with optimized airflow, which effectively solves the problems of poor internal temperature uniformity, dead airflow, and abnormal frost formation on the sample surface in the high and low temperature humidity test chamber.

[0009] The technical solution adopted in this utility model is as follows: A high and low temperature humidity test chamber with optimized airflow, comprising:

[0010] Box;

[0011] A door is located on one side of the box body and is used to open and close the sealed inner cavity of the box body;

[0012] An observation window is provided on the box door;

[0013] An air supply system, connected to the top of the housing, is used to input airflow at different temperatures;

[0014] The airflow guiding mechanism is inclinedly installed inside the housing and located below the air inlet of the air supply system. It includes multiple vertically staggered airflow guiding plates, and multiple airflow disturbance components are evenly distributed on the airflow guiding plates.

[0015] A sample stage is located at the bottom of the housing;

[0016] The humidification mechanism includes multiple atomizing nozzles evenly distributed around the sample stage and a humidification device connected to the atomizing nozzles, wherein the atomizing nozzles spray upwards.

[0017] In one embodiment, the spoiler is a cylindrical structure and is fixed to the surface of the guide plate.

[0018] In one embodiment, the air supply system includes a hot air mechanism and a cold air mechanism; the hot air mechanism includes a first air inlet duct, a heating device, and a hot air pipe; the cold air mechanism includes a second air inlet duct, a cooling device, and a cold air pipe; the hot air pipe and the cold air pipe are connected through an air supply duct; preferably, the air supply duct is provided with a control switch at the junction of the hot air pipe and the cold air pipe, and the switching state of the control switch includes a first switch contact position, a second switch contact position, and an intermediate position between the first switch contact and the second switch contact;

[0019] When the control switch is in the first switch contact position, the cold air duct is turned on independently;

[0020] When the control switch is in the second switch contact position, the hot air duct is turned on independently;

[0021] When the control switch is located between the first switch contact and the second switch contact, the hot air duct and the cold air duct are simultaneously turned on.

[0022] In one embodiment, the heating device is an electric heating wire heater, and the cooling device is a compressor refrigeration system.

[0023] In one embodiment, the tilt angle of the guide plate is 15° to 45°, and the distance between two adjacent guide plates in the vertical direction is 50 to 150 mm.

[0024] In one embodiment, the atomizing nozzle of the humidification mechanism is an ultrasonic atomizing nozzle with the nozzle facing upward; after the liquid is atomized, it is sprayed upward through the nozzle, evenly suspended in the air and slowly falls down, so as to increase the humidity of the environment around the product to be tested.

[0025] In one embodiment, the inner wall of the enclosure is covered with an insulation layer, which is a polyurethane foam layer.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model has a compact structure. Through the cooperation of the air supply system and the air guiding mechanism, it achieves uniform distribution of hot and cold air in the chamber, avoids dead air zones, and improves the test effect. At the same time, the air supply system includes a hot air mechanism and a cold air mechanism. The ratio of hot and cold air can be flexibly adjusted by the control switch. Meanwhile, the humidification mechanism can accurately control the humidity to meet various test requirements.

[0028] This utility model also has the following advantages:

[0029] (1) The optimized airflow design and temperature and humidity control of this utility model effectively avoid the frosting problem caused by high wind speed, while ensuring the airflow speed and temperature response speed in the test chamber.

[0030] (2) This utility model also adds a polyurethane foam layer for insulation on the inner side wall of the box, which reduces energy loss and improves testing efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0032] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0033] Figure 3 This is a schematic diagram of the air supply mechanism of this utility model.

[0034] Figure 4 This is a schematic diagram of the flow guiding mechanism of this utility model.

[0035] The components are: 100, chamber body; 200, chamber door; 300, observation window; 400, air supply system; 500, airflow guiding mechanism; 600, sample stage; 700, humidification mechanism.

[0036] 410. Hot air mechanism; 420. Cold air mechanism; 430. Air supply duct; 440. Control switch; 450. First switch contact; 460. Second switch contact;

[0037] 510. Deflector; 520. Spoiler;

[0038] 411. First air inlet duct; 412. Heating equipment; 413. Hot air duct;

[0039] 421. Second air inlet duct; 422. Refrigeration equipment; 423. Cold air duct. Detailed Implementation

[0040] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0041] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0044] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0045] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0046] like Figures 1-4 The accompanying drawing shows a schematic diagram of the structure of a high and low temperature humidity test chamber with optimized airflow according to an embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.

[0047] In this embodiment, an airflow-optimized high and low temperature humidity test chamber is provided, including a chamber body 100, a chamber door 200, an observation window 300, an air supply system 400, a flow guiding mechanism 500, a sample stage 600, and a humidification mechanism 700, which solves the problems of poor temperature uniformity, dead airflow, and abnormal frost formation on the sample surface in the high and low temperature humidity test chamber.

[0048] In this embodiment, the chamber 100 serves as the main structure of the test chamber, and its inner wall is covered with a heat insulation layer composed of polyurethane foam to reduce energy loss and maintain the temperature stability inside the chamber.

[0049] In this embodiment, the door 200 is hinged to one side of the chamber 100 and is used to open and close the sealed inner cavity of the chamber 100. Furthermore, an observation window 300 is added to the door 200, which adopts a tempered glass structure to facilitate real-time observation of the test status inside the chamber.

[0050] In this embodiment, the air supply system 400 is installed on the top of the housing 100 and includes a hot air mechanism 410 and a cold air mechanism 420.

[0051] Specifically, the hot air mechanism 410 consists of a first air inlet duct 411, a heating device 412 (electric heating wire heater) and a hot air duct 413;

[0052] Specifically, the cooling mechanism 420 consists of a second air inlet duct 421, a refrigeration device 422 (compressor refrigeration system), and a cooling duct 423;

[0053] Hot air duct 413 and cold air duct 423 are connected by air supply duct 430. A control switch 440 is provided at the junction of hot and cold air on the air supply duct 430. The switching states of the control switch 440 include:

[0054] At the first switch contact 450 position, the cold air duct 423 is independently connected, allowing only cold air to enter the cabinet 100;

[0055] At the second switch contact 460 position, the hot air pipe 413 is independently connected, allowing only hot air to enter the housing 100;

[0056] At the midpoint between the first switch contact 450 and the second switch contact 460, the cold air pipe 423 and the hot air pipe 413 are simultaneously connected, and the cold and hot air are mixed in proportion and then input into the housing 100.

[0057] In this embodiment, the airflow guiding mechanism 500 is inclinedly disposed below the air inlet of the air supply system 400, and includes multiple vertically staggered airflow guiding plates 510. The spacing between adjacent airflow guiding plates 510 is 50-150mm, and the tilt angle is 15°-45°. Each airflow guiding plate 510 has multiple cylindrical baffles 520 fixed on its surface to disperse the airflow and optimize its distribution, avoiding dead zones in the airflow.

[0058] In this embodiment, the sample stage 600 is located at the bottom of the housing 100; for example, the surface of the sample stage 600 is provided with anti-slip texture to fix the test sample.

[0059] In this embodiment, the humidification mechanism 700 includes ultrasonic atomizing nozzles evenly distributed around the sample stage 600, with the nozzles pointing upwards and connected to an external humidification device; after atomization, the liquid is sprayed upwards to form a uniformly suspended water mist that slowly falls, precisely regulating the humidity inside the chamber.

[0060] In practical application, the working method of this utility model is as follows:

[0061] Temperature adjustment is achieved by selecting cool air, hot air, or a mixed mode via control switch 440.

[0062] When a low-temperature environment is required, the control switch 440 switches to the first switch contact 450, the refrigeration equipment 422 is started, the cold air enters the air supply pipe 430 through the cold air pipe 423, and is evenly diffused into the cabinet 100 through the guide mechanism 500.

[0063] When a high-temperature environment is required, control switch 440 switches to the second switch contact 460;

[0064] When a hot and cold air mixture is required, the control switch 440 is switched to the middle position of the first switch contact 450 and the second switch contact 460.

[0065] Airflow optimization: The cold / hot airflow is eliminated by the inclined surface of the guide plate 510 and the disturbance of the turbulence component 520, thus ensuring the temperature uniformity of the sample stage 600 area.

[0066] Humidity control: The ultrasonic atomizing nozzle of the humidification unit 700 sprays water mist upwards. The water mist is suspended and diffused in the air and then slowly settles down, avoiding direct impact on the sample surface and effectively preventing frost formation.

[0067] On the other hand, the polyurethane foam layer on the inner wall of the chamber 100 reduces heat loss, and together with the precise temperature control of the air supply system 400, it improves testing efficiency.

[0068] The present invention has a reasonable structure and is easy to operate. The staggered guide plates 510 form a stepped airflow channel, which, combined with the turbulence effect of the baffle 520, achieves uniform airflow coverage. At the same time, by adjusting the position of the control switch 440, cold air, hot air or mixed air can be quickly switched to meet the test requirements of different temperature and humidity.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high and low temperature damp heat test chamber with airflow optimization, characterized in that, The application relates to a box-type temperature and humidity test chamber. The box-type temperature and humidity test chamber comprises a box body (100), a box door (200) arranged on one side of the box body (100) and used for opening and closing a closed inner cavity of the box body (100), an observation window (300) arranged on the box door (200), an air supply system (400) in communication with the top of the box body (100) and used for inputting airflows with different temperatures, a flow guide mechanism (500) arranged in the box body (100) and located below an air inlet of the air supply system (400), a sample table (600) arranged at the bottom of the box body (100), and a humidifying mechanism (700) comprising a plurality of atomizing nozzles arranged around the sample table (600) and a humidifying device connected with the atomizing nozzles, wherein the atomizing nozzles are arranged in a direction upwards. The flow disturbance piece is a cylindrical structure and is fixed to the surface of the flow guide plate (510). The air supply system (400) comprises a hot air mechanism (410) and a cold air mechanism (420). The hot air mechanism (410) comprises a first air inlet pipeline (411), a heating device (412) and a hot air pipeline (413). The cold air mechanism (420) comprises a second air inlet pipeline (421), a refrigerating device (422) and a cold air pipeline (423). The hot air pipeline (413) and the cold air pipeline (423) are in communication through an air supply pipeline (430). The air supply pipeline (430) is provided with a control switch (440) at the joint of the hot air pipeline (413) and the cold air pipeline (423).

2. The airflow-optimized high-low temperature damp heat test chamber according to claim 1, characterized in that, The switching state of the control switch (440) comprises a first switch contact (450) position, a second switch contact (460) position and an intermediate position of the first switch contact (450) and the second switch contact (460).

3. The airflow-optimized high-low temperature damp heat test chamber according to claim 1, wherein, When the control switch (440) is located at the first switch contact (450) position, the cold air pipeline (423) is individually conducted. When the control switch (440) is located at the second switch contact (460) position, the hot air pipeline (413) is individually conducted. When the control switch (440) is located at the intermediate position of the first switch contact (450) and the second switch contact (460), the hot air pipeline (413) and the cold air pipeline (423) are simultaneously conducted. The heating device (412) is an electric heating wire heater, and the refrigerating device (422) is a compressor refrigerating system.

4. The airflow-optimized high-low temperature damp heat test chamber according to claim 3, characterized in that, The inclination angle of the flow guide plate (510) is 15-45 degrees, and the interval between two adjacent flow guide plates (510) in the vertical direction is 50-150 mm. The atomizing nozzle of the humidifying mechanism (700) is an ultrasonic atomizing nozzle, and the nozzle direction is upwards.

5. The airflow-optimized high-low temperature damp heat test chamber according to claim 4, characterized in that, After the liquid is atomized, the liquid is sprayed upwards through the nozzle, uniformly suspended in the air and slowly falls down, so that the humidity of the surrounding environment of the product to be measured is increased. The inner wall of the box body (100) is covered with a heat preservation layer, and the heat preservation layer is a polyurethane foaming layer. ​ 6. The airflow-optimized high-low temperature damp heat test chamber according to claim 3, wherein, ​ 7. The airflow-optimized high-low temperature damp heat test chamber according to claim 1, wherein, ​ 8. The airflow-optimized high-low temperature damp heat test chamber according to claim 1, wherein, ​ ​ 9. The airflow-optimized high-low temperature damp heat test chamber according to claim 1, wherein, ​

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