Door curtain module and doorless temperature and humidity test chamber

Abstract

A curtain module and a doorless temperature and humidity test chamber are disclosed. The curtain of the curtain module effectively reduces the exchange of airflow between the test chamber and the outside airflow, thus improving energy efficiency and ease of use. It also ensures temporary stability of the test environment when the curtain is briefly opened to retrieve or place samples. By adding a sealing gas frame, the curtain can be pressed tightly against the test chamber to further improve sealing performance while retaining the basic function of easy sample retrieval. Furthermore, the curtain module, combined with a linkage valve, enables inflation and deflation of the sealing gas frame. In emergencies, a swing arm moves the valve core, allowing for rapid air extraction from the negative pressure tank to quickly release the curtain. A manual component allows for manual opening of the curtain in emergencies, while under normal conditions, the manual component is locked to the second side shell to avoid interfering with normal operation. The system ensures effective curtain sealing while also providing emergency handling capabilities, and its robust mechanical mechanism ensures durability.

Description

Technical Field

[0001] This utility model relates to temperature and humidity test chambers, and in particular to a curtain module and a doorless temperature and humidity test chamber. Background Technology

[0002] A temperature and humidity test chamber is a device used to conduct various temperature and humidity environmental tests on samples. Currently, it mainly adopts a sealed door design, which can realize temperature and humidity testing over a wide range. However, this design requires the chamber to remain closed during the test, making it impossible to flexibly replace or remove samples during use. For some applications where the temperature and humidity simulation range is not significantly different from the ambient temperature and humidity, a sealed door design can be omitted. This reduces costs and allows the equipment to remain operational while samples can be removed and placed as needed.

[0003] However, there is currently no design without a sealed door. Furthermore, if a sealed door were to be implemented, the issue of airflow exchange between the experimental chamber and the external environment would need to be addressed, aiming to achieve both ease of use and energy efficiency, while also obtaining the widest possible temperature and humidity control range. Since there is currently no such design or corresponding existing technology, this remains a technical problem that needs to be solved.

[0004] A solution to the above problems has been proposed in a Chinese invention patent application filed on the same day as this case, entitled "Doorless Temperature and Humidity Test Chamber". This application is to solve the technical problems of blocking the test chamber with a curtain and closing the test chamber with a curtain. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a curtain module and a doorless temperature and humidity test chamber, wherein the curtain module can seal the test chamber through the curtain.

[0006] To achieve the above objectives, this utility model provides a door curtain module, which is installed on a test chamber and seals the test chamber of the test chamber through the door curtain; it includes a door curtain, a door curtain frame, a sealing air frame, and an air frame shell. The door curtain frame and the air frame shell are installed on the test chamber. A door curtain shaft is installed on the door curtain frame. The door curtain is assembled with and rolled up at one end. One side of the sealing air frame is installed inside the air frame shell, and the other side is directly opposite the outer side of the test door frame of the test chamber and the corresponding position of the door curtain; the door curtain is provided with a door curtain strip, the door curtain strip is assembled and wound with the secondary shaft, and the secondary shaft is installed on the air frame shell; The curtain shaft is connected to the auxiliary shaft via a second belt, forming a belt drive mechanism. The curtain shaft or auxiliary shaft is directly or indirectly driven to rotate by a curtain motor. The sealing air frame is elastic and has a hollow sealing air cavity inside. After the sealing air cavity is filled with air, the air pressure drives the sealing air frame to extend into the test chamber, and finally presses the door curtain tightly against the outer wall of the test chamber to achieve a seal.

[0007] As a further improvement of this utility model, the curtain shaft is connected to the output shaft of the curtain motor via a first belt to form a belt drive, and the curtain motor is installed on the test chamber.

[0008] As a further improvement of this utility model, the door curtain is made of non-breathable heat-insulating material.

[0009] As a further improvement of this utility model, the manual component includes a manual seat and a mating seat. The mating seat is installed inside the manual seat. The manual seat is provided with a belt groove. The second belt passes through the belt groove. In the initial state, the manual seat and the mating seat are not pressed against the second belt, while in the manual state, the manual seat and the mating seat clamp the belt. The manual seat is assembled with one end of the sleeve, and the other end of the sleeve passes through the manual slot and is assembled with one end of the switch sleeve. The manual slot is set on the second side shell, and the second side shell is installed on the test chamber. The mating seat is assembled with one end of the connecting pipe, and the other end of the connecting pipe passes through the sleeve and the switch sleeve and is assembled with the large end. A second manual spring is fitted on the part of the connecting pipe between the large end and the switch sleeve. A clamping ring is provided on the switch sleeve. In the initial state, the clamping ring is pressed against the second side shell by the elastic action of the second manual spring, thereby locking the entire manual assembly. The elastic force of the second manual spring also presses the end of the mating seat against the inner wall of the manual seat, so that the mating seat and the manual seat are relatively locked and fixed.

[0010] As a further improvement of this utility model, the second manual spring is fitted with an elastic sleeve, the two ends of which are respectively assembled with the switch sleeve and the large end, and the elastic sleeve is elastic.

[0011] As a further improvement of this utility model, a groove is provided on the inner side of the switch sleeve, and the inside of the connecting pipe is a hollow connecting pipe hole. A spring plate seat is installed in the connecting pipe hole, a spring plate is installed on the spring plate seat, and a backstop pin is installed on the spring plate. The open end of the backstop pin has a backstop arc surface. The end of the backstop pin with the backstop arc surface passes through the connecting pipe and can engage with the groove, thereby clamping the switch sleeve so that the position of the switch sleeve and the connecting pipe is relatively fixed. At this time, the clamping ring is not pressed against the second side shell, and the manual seat and the mating seat clamp the second belt, which is the manual state.

[0012] As a further improvement of this utility model, the spring is elastic, and there are at least two springs connected by a spring rope, which is flexible. The spring rope is inserted into the push rod groove, which is located on one end of the push rod. The push rod passes through the first spacer ring and the second spacer ring and is then assembled with the push button. The first spacer ring and the second spacer ring are both installed in the connecting pipe hole. A spring ring is fitted on the part of the push rod between the first spacer ring and the second spacer ring, and a first manual spring is fitted on the part of the push rod between the spring ring and the first spacer ring. The first manual spring applies a spring force to the spring ring to prevent it from moving toward the first spacer ring, thereby keeping the push rod groove from being pressed tightly against the spring rope.

[0013] As a further improvement of this utility model, it also includes a linkage valve, which includes a valve shell, a valve core, and a valve stem. The valve shell has a hollow valve cavity inside, and the valve core is sealed and slidably installed inside the valve cavity. The valve core is provided with a first valve core groove and a second valve core groove. The valve core is assembled with one end of the valve stem, and the other end of the valve stem is fitted with a valve core spring, passes through the valve shell, and is assembled with one end of a cable. The other end of the cable is assembled with and wound around a cable shaft. The valve shell and the cable shaft are mounted on a transmission frame. The valve body is equipped with two first valve tubes and two second valve tubes, which are respectively connected to the valve cavity. The valve core spring applies a thrust away from the cable to the valve core, so that in the initial state, the first valve core groove is misaligned with the two first valve tubes so that the valve core closes and isolates the two first valve tubes, and the second valve core groove is misaligned with the two second valve tubes so that the valve core closes and isolates the two second valve tubes. The valve core is also assembled with one end of the telescopic shaft, and the other end of the telescopic shaft passes through the valve housing and is installed in the electromagnet, which is mounted on the valve housing. One of the first valve pipes is connected to the outlet of the air pump, and the other first valve pipe is connected to the sealed air chamber through an air pipe; one second valve pipe is connected to the sealed air chamber, and the other second valve pipe is connected to the negative pressure tank, which is in a negative pressure state.

[0014] As a further improvement of this utility model, a second gear is installed on the cable shaft, the second gear meshes with the first gear for transmission, the first gear is mounted on the handle shaft, the handle shaft is mounted on the transmission frame or the second side shell, and one end of the handle shaft passes through the second side shell and is assembled with the swing arm.

[0015] The present invention also discloses a doorless temperature and humidity test chamber, which includes the aforementioned door curtain module.

[0016] The beneficial effects of this utility model are: This utility model's door curtain effectively reduces the exchange of airflow between the test chamber and the outside airflow, thus saving energy and providing convenience. It also ensures temporary stability of the test environment when the door curtain is briefly opened to retrieve or place samples. By adding a sealing gas frame, the door curtain can be pressed tightly against the test chamber, further improving sealing performance while retaining the basic function of easy sample retrieval. Furthermore, the door curtain module, combined with a linkage valve, enables inflation and deflation of the sealing gas frame. In emergencies, a swing arm can move the valve core, combined with a negative pressure tank for rapid evacuation, allowing the sealing gas frame to quickly release the door curtain. A manual component allows for manual opening of the door curtain in emergencies, while under normal conditions, the manual component is locked to the second side shell to avoid affecting normal use. The overall structure is relatively simple and reliable, with low cost. It ensures effective sealing while also providing emergency handling capabilities, and its robust mechanical mechanism ensures durability.

[0017] This invention uses an air curtain to block the test airflow, combined with an air curtain channel surrounding the air conditioning channel. This not only enables stable temperature and humidity testing without a door, but also greatly increases the thermal insulation performance of the test chamber, thus saving energy and making it convenient to use. At the same time, the doorless design greatly facilitates the loading and unloading of samples without stopping the machine, which can effectively improve the testing efficiency.

[0018] This invention, by adding an inner curtain, can further divide the air curtain and the mixing volume of the test airflow, thereby further saving energy. It also enables higher-range temperature and humidity testing and ensures the stability of the temperature and humidity environment during testing. In the initial state, the inner curtain is driven by a first inner curtain motor and a second inner curtain motor. In an emergency, the first inner curtain shaft can be driven to open via a second belt, thus adapting to emergency situations. Furthermore, when the inner curtain is fully open but the door curtain is not, or when the inner curtain is not open, an overload component prevents pulling on the inner curtain and inner curtain belt, preventing damage. Simultaneously, the entire assembly is driven by a swing arm, allowing the second belt to transmit power to the drive shaft, which in turn drives the first inner curtain shaft. During normal use, they do not interfere with each other; in an emergency, they open directly in tandem, greatly saving opening time in emergencies. This high efficiency, achieved through a mechanical structure, ensures high reliability and durability. Attached Figure Description

[0019] Figures 1-2 This is a structural schematic diagram of Embodiment 1; Figure 3 This is a cross-sectional view of the test chamber 121 located at the center plane of Example 1; Figures 4-5 This is a partial structural schematic diagram of Embodiment 1; Figures 6-7 This is a structural schematic diagram of Embodiment 2; Figure 8This is a cross-sectional view of the test chamber 121 located at the center plane of Example 2; Figures 9-10 This is a partial structural schematic diagram of Embodiment 2; Figures 11-12 This is a schematic diagram of the structure after removing the functional part 110, the top box 130, and part of the test shell 120 in Embodiment 2; Figures 13-14 This is a structural diagram of the door curtain module and the inner curtain module; Figure 15 This is a partial structural diagram of the door curtain module and inner curtain module; Figures 16-17 This is a structural diagram of the manual component 500; Figure 18 This is a cross-sectional view of the manual component 500 located at the center plane of the axis of the connecting pipe 550; Figure 19 This is a cross-sectional view of the manual component 500 located on the other center plane where the axis of the connecting pipe 550 is located; Figures 20-21 This is a structural diagram of the linkage valve 600, transmission frame 750, and third belt 430. Figures 22-25 This is a structural diagram of the first bevel gear 441, the second bevel gear 442, and the transmission frame at 750. Figure 26 This is a cross-sectional view of the linkage valve 600, transmission frame 750, and third belt 430 located at the center plane of the axis of transmission shaft 820. Figure 27 yes Figure 26 This is a cross-sectional view of the linkage valve 600, transmission frame 750, and third belt 430 located at the center plane of the handle shaft 730 axis; Figure 28 This is a cross-sectional view of the linkage valve 600, transmission frame 750, and third belt 430 located on another center plane where the axis of transmission shaft 820 is located. Figure 29 This is a structural diagram of the second bevel gear 442, drive shaft 820, end face bearing 830, and drive sleeve 840. Figure 30 This is a structural schematic diagram of the overload component 900; Figure 31 This is a cross-sectional view of the overload assembly 900 located at the center plane of the axis of the ball rod 932; Figure 32 This is a cross-sectional view at the center plane where the axes of the handle sleeve 711, handle tube 712, and damping rod 713 are located. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0021] See Figures 1-5 A doorless temperature and humidity test chamber includes a functional section 110, a test shell 120, and a top chamber 130. The test shell 120 is mounted on the functional section 110, and the top chamber 130 is mounted on the test shell 120. The functional section 110 houses a refrigeration unit, a humidification water circuit, etc., providing cooling, humidification, and water supply functions for subsequent tests. This part is existing technology, and existing temperature and humidity test chamber related technical solutions can be directly adopted. This embodiment is also an improvement on existing products. Of course, the functional section 110 is not essential; in some embodiments, it can be omitted, and its functions can be integrated into the top chamber or the test shell. This is also existing technology, and existing temperature and humidity test chamber related technologies can be directly adopted.

[0022] The test shell 120 has a hollow test cavity 121 with a through-test door frame 125 on one side. The test cavity 121 is equipped with a first compartment 151 and a second compartment 152. An air curtain channel 123 is formed between the first compartment 151 and the inner wall of the test cavity 121. An air conditioning channel 122 is formed between the first compartment 151 and the second compartment 152. The air curtain channel 123 and the air conditioning channel 122 are through-tests at the corresponding locations of the test door frame 125. That is to say, the air curtain channel 123 and the air conditioning channel 122 are not provided at the corresponding locations of the test door frame 125.

[0023] The second compartment 152 contains a test chamber 1521, in which the sample is placed for testing.

[0024] A second perforated plate 162 is installed at the bottom of the air curtain channel 123 and the air conditioning channel 122 corresponding to the test door frame 125. A first perforated plate 161 is installed at the top of the air conditioning channel 122 corresponding to the test door frame 125. The airflow in the air conditioning channel 122 passes through the first perforated plate 161 and is blown out to the test chamber 1521 so that a space with a set temperature and humidity is formed in the test chamber 1521. The airflow passes through the through hole of the first perforated plate 161 and is blown out evenly. The airflow at the inlet of the air curtain channel 123 and the air conditioning channel 122 is divided by the through hole on the second perforated plate 162 to achieve uniform input.

[0025] A diversion peak 1513 is provided at the bottom of the first compartment 151 corresponding to the second orifice plate 162 or the test door frame 125. The diversion peak 1513 is formed by the intersection of the second inclined plate 1512 inclined towards the air conditioning channel 122 and the first inclined plate 1511 inclined towards the air curtain channel 123. The diversion peak 1513 is located below the outlet of the air conditioning channel 122 and biased towards the test chamber 1521. Figure 3 The area between the two vertical center lines 04 is the area directly opposite the outlet of the air conditioning channel 122. The diversion peak 1513 is located in this area on the side closer to the test chamber 1521, or outside this area on the side closer to the test chamber 1521. As long as as much airflow output from the air conditioning channel 122 can be drawn back into the air conditioning channel 122 as much as possible. This design primarily aims to separate the air curtain 01 from the test airflow 02 and reduce their mixing. Because the airflow blowing out from the air conditioning channel 122 is blocked by the air curtain at the test door frame 125, it is difficult for this side to mix with the outside air and it will flow towards the test chamber 1521. However, there will be some mixed gas at the junction of the air curtain 01 and the test airflow 02. When the airflow reaches the splitting peak 1513, the airflow of the air curtain 01 and the airflow at the junction of the air curtain and the test airflow are guided into the air curtain channel 123 through the splitting peak 1513, and the airflow of the test airflow 02 enters the air conditioning channel 122, thereby achieving rapid splitting of the two airflows. On the one hand, it can reduce the amount of mixing between the two airflows, thereby achieving energy saving. On the other hand, it can also effectively block the airflow, reducing the amount of exchange and contact between the test airflow 02 and the outside airflow, so as to obtain a larger temperature and humidity difference test and a more stable test environment.

[0026] The air curtain channel 123 surrounds the second compartment 152. This design creates a flowing, air-circulating, heat-insulating channel within the entire second compartment 152, thereby enhancing the thermal insulation effect within the test chamber 1521. Simultaneously, the test chamber 120, located on one side of the test chamber 121, is constructed with thermal insulation material to ensure the air conditioning channel 122 also possesses thermal insulation properties, reducing temperature and humidity loss within the air conditioning channel 122. This design further strengthens the thermal insulation effect of the second compartment 152, enabling a greater range of temperature and humidity adjustment within the test chamber 1521 and improving the overall thermal insulation effect, thus resulting in greater energy savings.

[0027] A first circulating fan 311 is installed in the air curtain channel 123. The first circulating fan 311 is preferably installed on the first inclined plate 1511, so as to draw the airflow of the air curtain 01 into the air curtain channel 123 for circulation.

[0028] The air conditioning channel 122 is equipped with a humidifier 320, an evaporator 330, a second circulating fan 312, and a heater 340, arranged sequentially from the airflow inflow direction to the airflow outflow direction. The humidifier 320 is used to humidify the airflow and can be a steam humidifier. The evaporator 330 is used to absorb heat from the airflow, thereby cooling the airflow. It can be used in conjunction with the refrigeration unit in the functional section to achieve cooling, although this is existing technology. The heater 340 is used to introduce airflow and can be an electric heating element. The second circulating fan 312 is used to drive the airflow within the air conditioning channel 122 to circulate. In use, the evaporator 330 and heater 340 are activated as needed to regulate the airflow temperature, and the humidifier 320 is activated as needed to regulate the airflow humidity. The humidifier, evaporator, and heater are collectively referred to as devices for regulating airflow temperature and humidity. Theoretically, any device that can adjust airflow temperature and humidity is acceptable and is not limited to humidifiers, evaporators, and heaters.

[0029] In use, a second temperature and humidity sensor can be installed in the test chamber 1521 or the air conditioning channel 122, and a first temperature and humidity sensor can be installed in the air curtain channel 123. The second and first temperature and humidity sensors are used to detect the temperature and humidity of the corresponding airflow, and then the signals are fed back to the industrial control computer. The industrial control computer adjusts the working status of the evaporator 330 or heater 340 and humidifier 320 according to the simulated temperature and humidity, such as power and start / stop. At the same time, the power of the first circulating fan 311 and the second circulating fan 312 can be adjusted to control the flow rate of the corresponding airflow, so as to better achieve temperature and humidity control in the test chamber.

[0030] Preferably, a curtain frame 140 can be installed on the outer side of the test shell 120 corresponding to the test door frame 125. A curtain shaft 220 is rotatably mounted on the curtain frame 140. The curtain shaft 220 is assembled and wound around one end of the curtain 210, and a curtain strip 211 is installed on the other end of the curtain 210. In use, the curtain 210 can be pulled down to cover the test door frame 125 to close the test chamber 121. This can further reduce the temperature and humidity loss of the air curtain, thereby achieving energy saving, as well as a wider temperature and humidity test range and a stable temperature and humidity environment simulation. When it is necessary to open the curtain, it can be opened directly. At this time, the air curtain forms a barrier, allowing samples to be placed and removed from the test chamber in a short time without stopping the machine.

[0031] Preferably, the door curtain strip 211 is magnetic and can be adsorbed onto the outer wall of the test chamber 120. Example

[0032] See Figures 6-12In Example 1, the simple door curtain used to block the test door frame 125 provides limited isolation, especially when dealing with temperature and humidity tests with significant ranges. This method still results in relatively large temperature and humidity losses, leading to increased energy consumption, and it is difficult to achieve a large temperature and humidity environment. Therefore, this example proposes a door curtain module and an inner curtain module to address this problem.

[0033] The curtain module includes a curtain 210, a curtain frame 140, a sealing air frame 230, and an air frame shell 170. The curtain frame 140 and the air frame shell 170 are installed on the test chamber 120. One side of the sealing air frame 230 is installed inside the air frame shell 170, and the other side is directly opposite the outer side of the test door frame 125 and the corresponding position of the curtain. A curtain strip 212 is provided on the curtain 210. The curtain strip 212 is assembled and wound with a secondary shaft 240. The secondary shaft 240 is rotatably installed on the air frame shell 170.

[0034] The curtain shaft 220 is connected to the auxiliary shaft 240 via the second belt 420, forming a belt drive mechanism. The curtain shaft 220 is also connected to the output shaft of the curtain motor 260 via the first belt, forming a belt drive mechanism. The curtain motor 260 is mounted on the top box 130 or the test chamber 120. After the curtain motor 260 starts, it drives the second belt via the first belt, thereby rotating the curtain shaft 220 and the auxiliary shaft 240. This allows one curtain to be released (210 or curtain belt 212), and the other to be rolled up (210 or curtain belt 212), thus opening and closing the curtain.

[0035] The sealing air frame 230 is elastic and has a hollow sealing air cavity 231 inside. When the sealing air cavity 231 is inflated, the air pressure drives the sealing air frame 230 to extend towards the test chamber 120, ultimately pressing the curtain 210 tightly against the outer wall of the test chamber 120 to achieve a seal. The curtain 210 is made of airtight heat-insulating material. When it is necessary to open, the air in the sealing air cavity 231 is deflated, and the sealing air frame 230 contracts elastically, thus separating from the curtain and allowing the curtain to be opened.

[0036] Preferably, see Figures 8-19 While using a curtain motor 260 to control the opening and closing of the curtain is very convenient, safety redundancy must be considered, namely, the manual opening method. In this embodiment, a manual component 500 is used to drive the second belt 420 to achieve opening and closing.

[0037] The manual assembly 500 includes a manual seat 510 and a mating seat 520. The mating seat 520 is installed inside the manual seat 510 and engages with it, and is slidably assembled. The manual seat 510 is provided with a belt groove 511, through which the second belt 420 passes. In the initial state, the manual seat 510 and the mating seat 520 are not pressed against the second belt 420, while in the manual state, the manual seat 510 and the mating seat 520 clamp the belt 420.

[0038] The manual seat 510 is assembled with one end of the sleeve 530, and the other end of the sleeve 530 passes through the manual groove 191 and is assembled with one end of the switch sleeve 540. The inner side of the switch sleeve 540 is provided with a groove 541. The manual groove 191 is provided on the second side shell 190, and the second side shell 190 is installed on the test chamber 120. The mating seat 520 is assembled with one end of the connecting pipe 550, and the other end of the connecting pipe 550 passes through the sleeve 530 and the switch sleeve 540 and is assembled with the large end 552. A second manual spring 502 is fitted on the part of the connecting pipe 550 located between the large end 552 and the switch sleeve 540, and an elastic sleeve 503 is fitted on the outside of the second manual spring 502. The two ends of the elastic sleeve 503 are respectively assembled with the switch sleeve 540 and the large end 552, and the elastic sleeve 503 is elastic. The elastic sleeve 503 is used to shield the second manual spring 502, thereby providing protection.

[0039] The switch sleeve 540 is provided with a clamping ring 542. In the initial state, under the elastic action of the second manual spring 502, the clamping ring 542 is pressed against the second side shell 190, thereby locking the entire manual assembly 500 and preventing the manual assembly 500 from sliding unnecessarily along the manual groove 191. In addition, the elastic force of the second manual spring 502 also causes the end of the mating seat 520 to be pressed against the inner side wall of the manual seat 510, so that the connecting pipe 550, the mating seat 520 and the manual seat 510 are relatively locked and fixed.

[0040] The connecting pipe 550 has a hollow connecting pipe hole 551 inside. A spring plate seat 560 is installed in the connecting pipe hole 551. A spring plate 561 is installed on the spring plate seat 560. A backstop pin 562 is installed on the spring plate 561. The open end of the backstop pin 562 has a backstop arc surface 563. The end of the backstop pin 562 with the backstop arc surface 563 passes through the connecting pipe 550 and can engage with the groove 541, thereby clamping the switch sleeve 540 so that the position of the switch sleeve 540 and the connecting pipe 550 is relatively fixed. At this time, the clamping ring 542 is not pressed against the second side shell 190, and the manual seat 510 and the mating seat 520 clamp the second belt 420, which is the manual state.

[0041] The spring piece 561 is elastic, and its own elastic force drives the anti-retraction arc surface 563 to press against the outer wall of the connecting pipe 550 or to assemble with the groove 541. There are at least two spring pieces, which are connected by a spring piece rope 564, which is flexible. The spring piece rope 564 is inserted into the push rod groove 571, which is located on one end of the push rod 570. The push rod 570 passes through the first spacer ring 554 and the second spacer ring 553 and is then assembled with the push button 573. The first spacer ring 554... The first and second spacer rings 553 are both installed in the connecting pipe hole 551; a spring ring 572 is fitted on the part of the push rod 570 located between the first spacer ring 554 and the second spacer ring 553, and a first manual spring 501 is fitted on the part of the push rod 570 located between the spring ring 572 and the first spacer ring 554. The first manual spring 501 applies a spring force to the spring ring 572 to prevent it from moving towards the first spacer ring 554, thereby keeping the push rod groove 571 from being pressed against the spring rope 564.

[0042] See Figure 4 In manual mode (although the manual seat 510 and mating seat 520 are not shown clamped to the second belt, they should actually be clamped), the manual seat 510 and mating seat 520 are clamped to the second belt 420, and the clamping ring 542 is not clamped to the second side shell 190. The anti-reverse arc surface 563 engages with the groove 541. Then, the door curtain can be manually opened by pushing the sleeve 530 along the manual groove 191 to rotate the second belt. The door curtain motor is a motor without a brake, so its output shaft can be rotated by external force when it is not in use. Generally, opening the door curtain strip 211 allows you to insert your finger and then switch to the door curtain strip, grab the strip, and push upwards to fully open the door curtain. Alternatively, you can push the switch sleeve and connecting pipe 550 to rotate the second belt and fully open the door curtain.

[0043] When a reset is required, press the push button 573 to drive the push rod 570 to overcome the elastic force of the first manual spring 501 and move towards the spring clip rope 564, thereby pushing the spring clip rope 564 towards the mating seat 520. The spring clip rope 564 pulls the spring clips 561 to lock together, thereby causing the anti-reverse pin 562 to gradually exit the groove 541. After exiting the groove, the second manual spring 502 pushes the switch sleeve 540 to move towards the manual groove 191 until the clamping ring 542 and the second side shell 190 are pressed together again. During this process, the manual seat 510 moves away from the mating seat 520, so that the manual seat 510 and the mating seat 520 are not clamped with the second belt, thus restoring the initial state. In the initial state, the movement of the second belt 420 will not drive the manual component 500 to move, thereby avoiding the safety hazard caused by the movement of the manual component 500. At the same time, the sleeve 530 engages and slides with the manual groove 191, which can effectively guide the sliding of the manual component 500. When you need to switch to manual mode, simply pull the switch sleeve 540 toward the larger end 552 until the anti-reverse arc surface 563 separates from the groove 541.

[0044] See Figures 6-15 In some experiments, the temperature, humidity, and ambient temperature and humidity vary significantly. In such cases, relying solely on the curtain 210 for separation is insufficient or energy-intensive. Therefore, this embodiment includes an inner curtain 250 between the air curtain 01 and the test airflow 02. When necessary, the inner curtain 250 separates the air curtain 01 from the test airflow 02, thereby further reducing the exchange of air between the test airflow 02 and the outside air. Details are as follows: The inner curtain module includes an inner curtain 250. One end of the inner curtain 250 is assembled and wound with a first inner curtain shaft 261, and the other end of the inner curtain 250 is provided with an inner curtain strip 251. The inner curtain strip 251 is assembled and wound with a second inner curtain shaft 262. The first inner curtain shaft 261 and the second inner curtain shaft 262 are respectively installed on both sides of the test chamber 121. The test chamber 120 is provided with an inner curtain groove 124 at the corresponding position of the inner curtain 250, and the inner curtain 250 and the inner curtain strip 251 can pass through the inner curtain groove 124.

[0045] The test chamber 120 has a first side shell 180 installed on one side of the second inner curtain shaft 262. The first side shell 180 is used to shield the second inner curtain shaft 262 for added safety. Additionally, light sensors 301 are installed on the side wall of the test chamber 120 on one side of the first side shell 180 and on both sides of the inner curtain groove 124. Specifically, one side is a transmitter and the other side is a receiver. During use, because the inner curtain belt 251 is partially hollow, the light sensor 301 outputs a signal to the industrial control computer. Once the inner curtain 250 reaches the light sensor 301, the light is cut off, generating a signal change which is input to the industrial control computer. The industrial control computer then determines that the inner curtain 250 has divided the test chamber 121.

[0046] The first inner curtain shaft 261 and the second inner curtain shaft 262 are respectively assembled with the output shafts of the first inner curtain motor 351 and the second inner curtain motor 352. All three motors are mounted on the test chamber 120. After starting, the first and second inner curtain motors drive the first and second inner curtain shafts 261 and 262 to rotate, thereby achieving the winding and releasing of the inner curtain 250 and the inner curtain belt 251, that is, driving the inner curtain 250 into or out of the test chamber 121. This design further reduces the mixing amount between the air curtain 01 and the test airflow 02, resulting in lower energy consumption, a wider temperature and humidity range compared to the ambient temperature and humidity, and a more stable testing environment. In addition, this design, combined with the design of the air curtain channel 123, can effectively achieve the thermal insulation effect of the second compartment 152. Even compared with temperature and humidity test chambers with sealed doors, its energy consumption is lower, while the stability of ambient temperature and humidity is similar, which greatly expands the applicability of the equipment in this embodiment.

[0047] See Figures 6-15 , Figures 20-32 To cope with emergencies, a mechanical emergency opening structure is necessary. Furthermore, for ease of use and quick opening of the door curtain 210 and inner curtain 250 in emergencies, this embodiment adds a linkage opening function and an emergency swing arm 710, as detailed below: The secondary shaft 240 is connected to the belt shaft 431 via a third belt 430, forming a belt drive mechanism. The belt shaft 431 is rotatably assembled with the test chamber 120. A first bevel gear 441 is mounted on the belt shaft 431, and the first bevel gear 441 meshes with a second bevel gear 442. The second bevel gear 442 is rotatably mounted on the gear plate 720 but cannot move axially. The second bevel gear 442 is axially slidably but cannot rotate on the drive shaft 820. 20 is installed on the transmission frame 750. The transmission shaft 820 is axially slidable but not circumferentially rotatable with a transmission sleeve 840. The transmission sleeve 840 is provided with a transmission outer sleeve 842 and a transmission sleeve end 841. The transmission outer sleeve 842 is circumferentially rotatably fitted outside the transmission head 850. The transmission sleeve end 841 is directly opposite the end of the transmission head 850. When the transmission sleeve end 841 is pressed against the end of the transmission head 850, the transmission sleeve 840 can drive the transmission head 850 to rotate through friction.

[0048] The transmission head 850 is mounted on the overload housing 910 of the overload assembly 900. The overload inner sleeve 920 of the overload assembly 900 is assembled with the first inner curtain shaft 261. When the transmission sleeve 840 drives the transmission head 850 to rotate, it can drive the first inner curtain shaft 261 to rotate through the overload assembly 900.

[0049] A gear plate shaft 741 is mounted on the gear plate 720. The gear plate shaft 741 is inserted into the gear plate sleeve 742 and is axially slidably assembled with it. The gear plate sleeve 742 is mounted on the second side shell 190. A first spring 701 is fitted around the gear plate shaft 741 and the gear plate sleeve 742. The two ends of the first spring 701 are pressed against the second side shell 190 and the gear plate 720 respectively, thereby applying a spring force away from the second side shell 190 to the gear plate 720. In the initial state, the gear plate 720 carries the second bevel gear 442 away from the first bevel gear 441 and moves towards the transmission frame 750, so that the second bevel gear 442 does not mesh with the first bevel gear 441 for transmission.

[0050] The transmission sleeve 840 is rotatably mounted on the clutch block 760 but not axially movable. The clutch block 760 is provided with a clutch block inclined surface 761 and a guide groove 762. The transmission sleeve 840 is assembled with the shaft ring of the end face bearing 830. The seat ring of the end face bearing 830 is pressed against one end of the third spring 703. The third spring 703 is fitted outside the transmission sleeve 840, and its other end is pressed against the transmission frame 750, thereby applying a spring force to the clutch block 760 to press against the drive frame 770. The guide groove 762 engages with and slides with the guide protrusion 752. The guide protrusion 752 is provided on the transmission frame 750, thereby guiding the clutch block 760 to slide.

[0051] The clutch block inclined surface 761 is pressed against the drive inclined surface 771. The drive inclined surface 771 is disposed on the drive frame 770. The drive frame 770 is axially slidably mounted on the transmission frame rod 751. A second spring 702 is mounted on the transmission frame rod 751. The two ends of the second spring 702 are pressed against the drive frame 770 and the transmission frame 750 respectively, thereby applying a spring force away from the first bevel gear 441 to the drive frame 770. This ensures that in the initial state, the lower end of the drive inclined surface 771 engages with the clutch block inclined surface 761, so that the end of the transmission sleeve 841 is directly opposite and pressed against the end of the transmission head 850. At this time, the transmission sleeve 840 cannot drive the transmission head 850 to rotate.

[0052] A rack 461 is mounted on the drive frame 770. The rack 461 meshes with the drive gear 462 for transmission. The drive gear 462 is mounted on the handle shaft 730. The handle shaft 730 is rotatably mounted on the transmission frame 750. The transmission frame 750 is mounted on the test chamber 120.

[0053] One end of the handle shaft 730 passes through the second side shell 190 and is assembled with the swing arm 710. A handle tube 712 is installed on the swing arm 710. A handle sleeve 711 is rotatably fitted over the handle tube 712. A damping rod 713 is installed inside the handle tube 712. The damping rod 713 is threadedly engaged with the handle tube 712, and the end of the damping rod 713 is pressed against the second side shell 190 to provide frictional damping for the rotation of the swing arm 710.

[0054] The second side shell 190 is provided with a stop block 192. In the initial state, the swing arm 710 is pressed against the stop block 192 to limit the maximum rotation angle of the swing arm and to position it.

[0055] One end of the gear plate 720 extends through the second side shell 190, and this end is assembled with a spring plate 810. The spring plate 810 is mounted on the second side shell 190 and is elastic, applying a pushing force to the gear plate 720 towards the transmission frame 750. In an emergency, the swing arm 710 is rotated to one side of the gear plate 720 via the handle sleeve 713, thereby pressing the gear plate 720 to its lowest position. Figure 7 At this time, the gear plate 720, carrying the second bevel gear 442, moves down and meshes with the first bevel gear 441, thus enabling the power of the second belt to be transmitted to the drive shaft. During this process, the handle shaft 730 drives the drive gear 462 to rotate, thereby driving the rack 461 to move, which in turn drives the drive frame 770 to move towards the clutch block 760, which in turn drives the clutch block 760 to move towards the clutch head 850, thereby pressing the end of the transmission sleeve 841 against the end of the transmission head 850 for transmission.

[0056] Preferably, in order to enable rapid exhaust of the sealed air chamber 231 in an emergency, this embodiment also adds a linkage valve 600. The linkage valve 600 includes a valve shell 610, a valve core 620, and a valve stem 630. The valve shell 610 has a hollow valve cavity 611 inside, and the valve core 620 is sealed and slidably installed inside the valve cavity 611. The valve core 620 is provided with a first valve core groove 621 and a second valve core groove 622. The valve core 620 is assembled with one end of the valve stem 630. The other end of the valve stem 630 is fitted with a valve core spring 601, passes through the valve shell 610, and is assembled with one end of a cable 650. The other end of the cable 650 is assembled with and wound around a cable shaft 660. The valve shell 610 and the cable shaft 660 are mounted on the transmission frame 750.

[0057] The valve housing 610 is equipped with two first valve tubes 641 and two second valve tubes 642. The two first valve tubes 641 and two second valve tubes 642 are respectively connected to the valve cavity 611. The valve core spring 601 applies a thrust to the valve core 620 away from the cable 650, so that in the initial state, the first valve core groove 621 is misaligned with the two first valve tubes 641 so that the valve core closes and isolates the two first valve tubes 641. The second valve core groove 622 is misaligned with the two second valve tubes 642 so that the valve core closes and isolates the two second valve tubes 642.

[0058] The valve core 620 is also assembled with one end of the telescopic shaft 371. The other end of the telescopic shaft 371 passes through the valve housing 610 and is installed in the electromagnet 370. The electromagnet 370 is installed on the valve housing 610. When the electromagnet 370 is activated, it can drive the telescopic shaft axis to extend and retract, thereby driving the valve core 620 to move.

[0059] A first gear 451 is mounted on the handle shaft 730. The first gear 451 meshes with a second gear 452 for transmission. The second gear 452 is mounted on the cable shaft 660.

[0060] One of the first valve pipes 641 is connected to the outlet of the air pump, and the other first valve pipe 641 is connected to the sealed air chamber 231 through the air pipe 201; one second valve pipe 642 is connected to the sealed air chamber 231, and the other second valve pipe 642 is connected to the negative pressure tank, and the inside of the negative pressure tank is in a negative pressure state.

[0061] When the sealed air chamber needs to be inflated, the electromagnet is activated, driving the valve core to move towards the valve stem 630, so that the first valve core groove 621 connects with the two first valve pipes 641. At this time, the air pump starts to inflate the sealed air chamber 231, causing the sealed air frame 230 to expand and press against the sealed curtain 210. After inflation is complete, the valve core returns to its original position to keep the sealed air chamber 231 sealed. When it is necessary to extract the air from the sealed air chamber 231, the first valve core groove 621 connects with the two first valve pipes 641, the air pump reverses to extract air, or the first valve pipe 641 connected to the air pump connects to the atmosphere, and the air is discharged by the contraction elasticity of the sealed air frame 230.

[0062] During the rotation of the swing arm 710 to the spring plate 810, the handle shaft 730 drives the cable shaft 660 to rotate via the first gear 451 and the second gear 452. The cable shaft 660 winds up the cable 650, which in turn drives the valve stem 630 to pull the valve core 620 away from the electromagnet 370, overcoming the spring force of the valve core spring. When the swing arm 710 presses against the gear plate 720, the second valve core groove 622 connects to the two second valve pipes 642. The negative pressure tank quickly extracts the gas from the sealed air chamber 231, causing the sealed air frame 230 to contract rapidly and release the door curtain. The electromagnet does not have a self-locking function for the telescopic shaft; that is, when the electromagnet is not activated, the telescopic shaft can extend and retract under external force.

[0063] See Figures 26-31 The overload assembly 900 includes an overload housing 910, an overload inner sleeve 920, and a support sleeve 940. The overload inner sleeve 920 is installed inside the support sleeve 940, which is installed on the overload housing 910. A slot 921 is provided on the side wall of the overload inner sleeve 920 facing the overload housing 910. The slot 921 engages with a ball bearing 933, which is spherically rolled on one end of a ball bearing rod 932. The other end of 2 passes through the bracket sleeve 940 and is assembled with the arc-shaped spring piece 931. The arc-shaped spring piece 931 is elastic and is installed on the bracket sleeve 940. The arc-shaped spring piece 931 applies a spring force to the ball rod 932 to press against the overload inner sleeve 920 through its own elasticity, so as to keep the ball 933 engaged with the slot 921. At this time, the overload shell 910 can drive the overload inner sleeve 920 to rotate, that is, the transmission head 850 can drive the first inner curtain shaft 261 to rotate. Once the resistance of the first inner curtain shaft 261 is large, the overload inner sleeve 920 will squeeze the ball, causing the transmission between the overload shell 910 and the overload inner sleeve 920 to be disconnected, so that the overload shell 910 cannot drive the overload inner sleeve 920 to rotate, thereby realizing torque cutoff and overload protection. This design primarily addresses situations where the inner curtain is closed but not fully open, or where the main curtain is not fully open but the inner curtain is already open. In these cases, forcibly rotating the first inner curtain shaft 261 would cause tearing of the inner curtain 250 and the inner connecting strip 251, ultimately leading to damage. By employing the overload component 900, the first inner curtain shaft 261 is prevented from rotating when the inner curtain is opened, thus avoiding the aforementioned situation.

[0064] In the initial state, the first bevel gear and the second bevel gear are separated and not in a transmission state. At this time, the first inner curtain shaft 261 and the second inner curtain shaft 262 drive the inner curtain to convey, roll up and unroll without interfering with the second belt. Only when the swing arm is rotated to the position in an emergency will the first bevel gear and the second bevel gear mesh and transmit power. At this time, manually driving the second belt will drive the transmission head to rotate.

[0065] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0066] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A curtain module, installed on a test chamber, which closes the test cavity of the test chamber through the curtain; characterized in that: It includes a door curtain, a door curtain frame, a sealing air frame, and an air frame shell. The door curtain frame and the air frame shell are installed on the test chamber. A door curtain roller is installed on the door curtain frame. The door curtain is assembled and rolled up with one end of the door curtain. One side of the sealing air frame is installed inside the air frame shell, and the other side is directly opposite the outer side of the test door frame of the test chamber and the corresponding position of the door curtain; the door curtain is provided with a door curtain strip, the door curtain strip is assembled and wound with the secondary shaft, and the secondary shaft is installed on the air frame shell; The curtain shaft is connected to the auxiliary shaft via a second belt, forming a belt drive mechanism. The curtain shaft or auxiliary shaft is directly or indirectly driven to rotate by a curtain motor. The sealing air frame is elastic and has a hollow sealing air cavity inside. After the sealing air cavity is filled with air, the air pressure drives the sealing air frame to extend into the test chamber, and finally presses the door curtain tightly against the outer wall of the test chamber to achieve a seal.

2. The curtain module according to claim 1, characterized in that: The curtain shaft is connected to the output shaft of the curtain motor via a first belt, forming a belt drive. The curtain motor is installed on the test chamber.

3. The curtain module according to claim 1, characterized in that: The door curtain is made of non-breathable heat-insulating material.

4. The curtain module according to any one of claims 1-3, characterized in that: It also includes a manual component, which includes a manual seat and a mating seat. The mating seat is installed inside the manual seat. The manual seat is provided with a belt groove. The second belt passes through the belt groove. In the initial state, the manual seat and the mating seat are not pressed against the second belt, while in the manual state, the manual seat and the mating seat clamp the belt. The manual seat is assembled with one end of the sleeve, and the other end of the sleeve passes through the manual slot and is assembled with one end of the switch sleeve. The manual slot is set on the second side shell, and the second side shell is installed on the test chamber. The mating seat is assembled with one end of the connecting pipe, and the other end of the connecting pipe passes through the sleeve and the switch sleeve and is assembled with the large end. A second manual spring is fitted on the part of the connecting pipe between the large end and the switch sleeve. A clamping ring is provided on the switch sleeve. In the initial state, the clamping ring is pressed against the second side shell by the elastic action of the second manual spring, thereby locking the entire manual assembly. The elastic force of the second manual spring also presses the end of the mating seat against the inner wall of the manual seat, so that the mating seat and the manual seat are relatively locked and fixed.

5. The curtain module according to claim 4, characterized in that: The second manual spring is fitted with an elastic sleeve, the two ends of which are respectively assembled with the switch sleeve and the large end, and the elastic sleeve is elastic.

6. The curtain module according to claim 4, characterized in that: The inner side of the switch sleeve is provided with a groove. The inside of the connecting pipe is a hollow connecting pipe hole. A spring plate seat is installed in the connecting pipe hole. A spring plate is installed on the spring plate seat. A backstop pin is installed on the spring plate. The open end of the backstop pin has a backstop arc surface. The end of the backstop pin with the backstop arc surface passes through the connecting pipe and can engage with the groove to lock the switch sleeve so that the position of the switch sleeve and the connecting pipe is relatively fixed. At this time, the clamping ring is not pressed against the second side shell, and the manual seat and the mating seat clamp the second belt, which is the manual state.

7. The curtain module according to claim 6, characterized in that: The spring is elastic, and there are at least two springs connected by a flexible spring rope. The spring rope is inserted into a push rod groove, which is located on one end of the push rod. The push rod passes through a first spacer ring and a second spacer ring before being assembled with a push button. Both the first and second spacer rings are installed in the connecting pipe hole. A spring ring is fitted on the part of the push rod between the first and second spacer rings, and a first manual spring is fitted on the part of the push rod between the spring ring and the first spacer ring. The first manual spring applies a spring force to the spring ring to prevent it from moving towards the first spacer ring, thereby keeping the push rod groove from being pressed tightly against the spring rope.

8. The curtain module according to any one of claims 1-3, characterized in that: It also includes a linkage valve, which includes a valve body, a valve core, and a valve stem. The valve body has a hollow valve cavity inside, and the valve core is sealed and slidably installed inside the valve cavity. The valve core is provided with a first valve core groove and a second valve core groove. The valve core is assembled with one end of the valve stem, and the other end of the valve stem is fitted with a valve core spring, passes through the valve body, and is assembled with one end of a cable. The other end of the cable is assembled with and wound around a cable shaft. The valve body and the cable shaft are mounted on a transmission frame. The valve body is equipped with two first valve tubes and two second valve tubes, which are respectively connected to the valve cavity. The valve core spring applies a thrust away from the cable to the valve core, so that in the initial state, the first valve core groove is misaligned with the two first valve tubes so that the valve core closes and isolates the two first valve tubes, and the second valve core groove is misaligned with the two second valve tubes so that the valve core closes and isolates the two second valve tubes. The valve core is also assembled with one end of the telescopic shaft, and the other end of the telescopic shaft passes through the valve housing and is installed in the electromagnet, which is mounted on the valve housing. One of the first valve pipes is connected to the outlet of the air pump, and the other first valve pipe is connected to the sealed air chamber through an air pipe; one second valve pipe is connected to the sealed air chamber, and the other second valve pipe is connected to the negative pressure tank, which is in a negative pressure state.

9. The curtain module according to claim 8, characterized in that: A second gear is installed on the cable shaft, which meshes with the first gear for transmission. The first gear is mounted on the handle shaft, which is installed on the transmission frame or the second side shell. One end of the handle shaft passes through the second side shell and is then assembled with the swing arm.

10. A doorless temperature and humidity test chamber, characterized by: It includes the curtain module as described in any one of claims 1-9.

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