Shock-resistant air curtain system with adjustable air direction, air volume and air speed

Abstract

The invention discloses an anti-impact air curtain system with adjustable air direction, air volume and air speed, and relates to the technical field of airflow isolation of high and low temperature laboratories. The system comprises a metal static pressure air bellow, a frequency conversion fan and a fixed support, the metal static pressure air bellow is formed by welding steel plates, and an air outlet is provided with hinge type upper and lower metal flow guide plates, matched direction adjusting rods (upper and lower sets), interval adjusting bolts and flow guide plate fixing bolts (upper and lower ends of each flow guide plate are respectively set). The direction adjusting rod adjusts the wind direction, the spacing adjusting bolt adjusts the gap spacing of the guide plate, and the variable-frequency fan adjusts the rotating speed to control the air volume and the air speed. And the fixed support guarantees stable installation. The device can realize accurate adjustment of wind direction, wind quantity and wind speed, forms an optimal closed isolation effect, greatly reduces convection and heat exchange inside and outside a test room, guarantees the uniformity of a temperature field, improves the temperature field maintenance capability in an opening state, has transient high-pressure gas impact resistance, is reliable in structure and convenient to operate, and is suitable for being used at an opening of a high and low temperature test room.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air curtain systems, in particular to an anti-impact air curtain system with adjustable air direction, air volume and air speed, which is specially applied to the opening of a high-low temperature test chamber to realize the isolation of air flow inside and outside the test chamber, prevent air convection from affecting the temperature field inside the test chamber, and have the ability to resist the impact damage of transient high-pressure gas, thereby ensuring the normal operation of the system under the condition of transient impact. BACKGROUND

[0002] In many fields such as aerospace, electronic components, and new material research and development, a high-low temperature test chamber is a core device for conducting environmental adaptability tests, and the stability and uniformity of the temperature field inside the test chamber directly determine the accuracy and reliability of the test data.

[0003] However, in actual use, it is difficult to avoid the opening of the test chamber, such as the taking and placing of test samples, temporary maintenance of equipment, and entry and exit of personnel. At this time, the temperature difference between the inside and outside of the test chamber will cause strong air convection and heat exchange, and the high-temperature side air will flow quickly to the low-temperature side, resulting in the test chamber's preset temperature field being severely damaged. Not only does this require additional energy consumption to maintain the stability of the temperature field, but it can also cause the test process to be interrupted and the test results to be distorted, greatly hindering related research and production work.

[0004] The existing air curtain products on the market are mostly general-purpose, mainly applied to heat insulation and dust prevention in ordinary places such as shopping malls and cold storage, and their design cores are not targeted at the special needs of high-low temperature test chambers.

[0005] These conventional air curtains have many defects that are difficult to overcome:

[0006] Firstly, the adjustment function is single, and most of them can only achieve simple adjustment of the air speed or the air direction is fixed and cannot be adjusted. They cannot accurately control the air direction, air volume, and air speed according to the actual situation of the opening size, temperature field parameters, etc. of the test chamber, and it is difficult to form a closed air flow barrier that fits the opening area, so the isolation effect is greatly reduced.

[0007] Secondly, the structural strength is insufficient. The air box of the conventional air curtain is mostly made of thin plates or injection molded, and the material and process cannot resist the impact of transient high-pressure gas. There may be situations such as the start and stop of compressed air equipment and fluctuations in pipeline air flow around the high-low temperature test chamber, which can easily produce transient high-pressure air impact. At this time, the conventional air curtain is prone to air box deformation, guide plate fracture, and fan displacement, resulting in system failure and inability to continue to play an isolation role.

[0008] Thirdly, the adaptability is poor. The installation method and structural size of the conventional air curtain are difficult to accurately match the opening structure of the high-low temperature test chamber, and after installation, it is easy to have gaps that leak air, further weakening the isolation effect, and some air curtains have relatively high noise during operation, which may also interfere with the precision instruments inside the test chamber.

[0009] Although some industries try to make simple modifications to the conventional air curtain, such as replacing thickened plates, adding fixed supports, etc., these improvements can only improve the structural stability to a certain extent, cannot achieve coordinated and precise adjustment of wind direction, wind volume and wind speed, and have limited improvement in impact resistance, and still cannot meet the stringent requirements of high and low temperature test rooms for airflow isolation precision and system stability.

[0010] Therefore, the market urgently needs a special air curtain system designed specifically for high and low temperature test room scenarios, which has multi-dimensional adjustment function and strong impact resistance, to solve the many pain points existing in the prior art. SUMMARY

[0011] In view of the deficiencies of the prior art, the present application provides an impact-resistant wind direction, wind volume and wind speed adjustable air curtain system, which aims to effectively isolate the airflow inside and outside the opening of the high and low temperature test room, reduce air convection and heat exchange, ensure the uniformity of the internal temperature field of the test room, improve the ability to maintain the internal temperature field of the test room under the opening state, and at the same time have the performance of resisting the impact of transient high pressure gas, to ensure the stable operation of the system under the transient impact environment.

[0012] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0013] An impact-resistant wind direction, wind volume and wind speed adjustable air curtain system, comprising a metal static pressure air tank, a variable frequency fan and a fixed support;

[0014] The metal static pressure air tank is made of steel plate welding, and the air outlet thereof is provided with upper and lower metal flow guide plates, flow guide plate fixing pieces and flow guide plate rotating pieces; the upper and lower metal flow guide plates are of a hinge type structure, and are provided with a direction adjusting rod and a spacing adjusting bolt in a matched manner; the direction adjusting rod is used for adjusting the air outlet direction of the upper and lower metal flow guide plates, and the spacing adjusting bolt is used for adjusting the gap spacing between the upper and lower metal flow guide plates; the variable frequency fan is connected with the metal static pressure air tank, and the air volume and air speed of the air outlet of the metal static pressure air tank are adjusted by adjusting the rotating speed of the variable frequency fan; the fixed support is used for fixedly installing the metal static pressure air tank and the variable frequency fan; the air curtain system is used for the opening of the high and low temperature test room, realizes airflow isolation and resists the impact of transient high pressure gas.

[0015] Further, the flow guide plate fixing piece is a flow guide plate fixing bolt, and one set of flow guide plate fixing bolts is arranged at the upper and lower ends of each flow guide plate.

[0016] Further, the direction adjusting rod is one set for each of the upper and lower parts, and is connected with the upper and lower metal flow guide plates correspondingly.

[0017] Further, the spacing adjusting bolt is arranged at the lower hinge of the upper hinge type flow guide plate, and the end thereof abuts against the lower flow guide plate.

[0018] Further, the air outlet of the variable frequency fan is sealingly connected with the air inlet of the metal static pressure air bellow.

[0019] Further, the fixed support is fixedly installed on the wall or support at the opening of the high-low temperature test chamber through expansion bolts.

[0020] The present application has the following advantages:

[0021] 1. The present application can realize multi-dimensional precise adjustment of wind direction, wind volume and wind speed through the cooperation of the direction adjusting rod, the spacing adjusting bolt and the variable frequency fan, can adjust the air curtain to the best closed isolation state according to the actual use demand of the high-low temperature test chamber, greatly reduces the air convection and heat exchange between the inside and outside of the test chamber, effectively guarantees the uniformity of the internal temperature field of the test chamber, and significantly improves the ability of the test chamber to maintain the internal temperature field in the opening state.

[0022] 2. The metal static pressure air bellow is made of steel plate welding, has high structural strength, endows the system with the ability to resist the damage of transient high-pressure gas impact, ensures that the system can still operate normally when encountering transient impact, and widens the applicable scenarios and use safety of the air curtain system.

[0023] 3. The whole system has reasonable structure design, reliable connection of components, convenient adjustment operation, and is easy to install and maintain, can long-term stably meet the use demand of the high-low temperature test chamber, and solves the problem of lack of such special air curtain system in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of an anti-impact type wind direction, wind volume and wind speed adjustable air curtain system according to the present application (one);

[0025] Figure 2 It is a structural schematic view of an anti-impact type wind direction, wind volume and wind speed adjustable air curtain system according to the present application (two);

[0026] Figure 3 It is a structural schematic view of an anti-impact type wind direction, wind volume and wind speed adjustable air curtain system according to the present application (three). DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] The anti-impact type wind direction, wind volume and wind speed adjustable air curtain system according to the present application has the following characteristics:

[0029] It comprises a metal static pressure air bellow 1, a variable frequency fan 2 and a fixed support 3.

[0030] The metal static pressure air bellow 1 is made of steel plate by welding, and an upper metal flow guide plate 12, a lower metal flow guide plate 13, a flow guide plate fixing part and a flow guide plate rotating part are arranged at the air outlet 11.

[0031] The upper and lower metal flow guide plates are of hinge type structure, and are provided with a direction adjusting rod 14 and a spacing adjusting bolt; the direction adjusting rod 14 is provided with one set of upper and lower rods, which is used for adjusting the deflection direction of the upper and lower metal flow guide plates, so as to change the air curtain outlet direction; the spacing adjusting bolt is arranged at the lower hinge of the upper flow guide plate, and is used for adjusting the gap spacing between the upper and lower metal flow guide plates.

[0032] The flow guide plate fixing part is a flow guide plate fixing bolt 15, and one set of the bolt is arranged at the upper and lower ends of each flow guide plate, which is used for fixing and installing the upper and lower metal flow guide plates at the air outlet 11 of the metal static pressure air bellow.

[0033] The variable frequency fan 2 is connected with the metal static pressure air bellow 1, and the air volume and air speed of the air outlet 11 of the metal static pressure air bellow 1 can be accurately adjusted by adjusting the rotating speed of the variable frequency fan 2.

[0034] The fixed support 3 is used for fixing and installing the metal static pressure air bellow 1 and the variable frequency fan 2 at the corresponding position of the opening of the high and low temperature test chamber, so as to ensure the installation stability of the whole air curtain system.

[0035] The application will be further described in detail in combination with the embodiments.

[0036] The impact-resistant air direction, air volume and air speed adjustable air curtain system of the embodiment comprises a metal static pressure air bellow, a variable frequency fan and a fixed support, and the specific settings of each part are as follows:

[0037] The metal static pressure air bellow is made of high-strength steel plate by welding process, which ensures that it has sufficient structural strength to resist the impact of transient high-pressure gas; at the air outlet position of the metal static pressure air bellow, upper and lower metal flow guide plates are assembled, and the upper and lower metal flow guide plates are designed as hinge type structure, and are provided with a flow guide plate fixing part and a flow guide plate rotating part, wherein the flow guide plate fixing part is a flow guide plate fixing bolt, and one set of the bolt is arranged at the upper and lower ends of each flow guide plate, and the upper and lower metal flow guide plates are stably fixed at the air outlet by tightening the flow guide plate fixing bolt, and the flow guide plate rotating part ensures that the upper and lower metal flow guide plates can be deflected flexibly.

[0038] Direction adjusting rod: one set of upper and lower, one end of the direction adjusting rod is connected with the upper and lower metal guide plate, the other end extends to a convenient operation position, by pushing or rotating the direction adjusting rod, the upper and lower metal guide plate can be deflected around the guide plate rotating piece, and then the outflow direction of the air curtain is accurately adjusted to adapt to different isolation needs.

[0039] Spacing adjusting bolt: installed at the lower hinge of the hinge type upper guide plate, the end of the spacing adjusting bolt abuts against the lower guide plate, by rotating the spacing adjusting bolt clockwise or counterclockwise, the gap spacing between the upper and lower metal guide plates can be changed, thereby adjusting the outflow cross-sectional size.

[0040] Variable frequency fan: a variable frequency fan adapted to the metal static pressure air tank is used, the outlet of the variable frequency fan is sealingly connected with the inlet of the metal static pressure air tank to ensure the sealing of air flow transmission; by adjusting the frequency of the variable frequency fan, the rotating speed is changed, when the rotating speed increases, the air volume and speed of the outlet of the metal static pressure air tank increase, when the rotating speed decreases, the air volume and speed decrease, thereby the air volume and speed are accurately controlled.

[0041] Fixed support: according to the weight of the metal static pressure air tank and the variable frequency fan and the installation requirements, the corresponding fixed support is designed, the fixed support is installed on the wall or support at the opening of the high and low temperature test chamber through expansion bolts and other fixing members, then the metal static pressure air tank and the variable frequency fan are fixed on the fixed support, thereby the whole system is installed firmly and does not shake during operation.

[0042] In use, first, the whole air curtain system is installed at the preset position of the opening of the high and low temperature test chamber through the fixed support, then according to the temperature field requirements and use scene of the test chamber, the wind direction, air volume and speed are adjusted: the direction of the upper and lower metal guide plates is adjusted through the direction adjusting rod, so that the outflow direction of the air curtain can cover the whole area of the opening of the test chamber; the gap spacing between the upper and lower metal guide plates is adjusted through the spacing adjusting bolt, thereby the appropriate outflow cross section is determined; the rotating speed of the variable frequency fan is adjusted, thereby the required air volume and speed are set, so that the air curtain forms a stable air flow barrier, thereby the air flow inside and outside the test chamber is effectively isolated. When the instantaneous high pressure gas impact is encountered, since the metal static pressure air tank is made of steel plate welding, the structural strength is high, and can resist impact damage, thereby the continuous normal operation of the system is ensured.

[0043] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, without creative design, similar structure and embodiments to the technical solution can be designed, which should belong to the protection scope of the present application.

Claims

1. An impact-resistant air curtain system with adjustable wind direction, air volume, and wind speed, characterized in that: Includes a metal static pressure box, a variable frequency fan, and a fixed support; The metal static pressure air box is made of welded steel plates, and its air outlet is equipped with upper and lower metal guide plates, guide plate fixing parts, and guide plate rotating parts. The upper and lower metal guide plates have a hinged structure and are equipped with a direction adjustment rod and a spacing adjustment bolt. The direction adjustment rod is used to adjust the air outlet direction of the upper and lower metal guide plates, and the spacing adjustment bolt is used to adjust the gap between the upper and lower metal guide plates. The variable frequency fan is connected to the metal static pressure air box, and the air volume and air velocity at the air outlet of the metal static pressure air box are adjusted by adjusting the speed of the variable frequency fan. The fixed support is used to fix the metal static pressure air box and the variable frequency fan. This air curtain system is used at the opening of the high and low temperature test chamber to isolate the internal and external airflow and resist the impact of transient high-pressure gas.

2. The impact-resistant adjustable air curtain system with wind direction, air volume, and air velocity according to claim 1, characterized in that, The guide plate fixing component is the guide plate fixing bolt, and one set of guide plate fixing bolts is provided at the upper and lower ends of each guide plate.

3. The impact-resistant, wind direction, air volume, and wind speed adjustable air curtain system according to claim 1, characterized in that, The direction adjustment rod consists of one set each for the upper and lower parts, which are respectively connected to the upper and lower metal guide plates.

4. The impact-resistant adjustable air curtain system with wind direction, air volume, and air velocity according to claim 1, characterized in that, The spacing adjustment bolt is located at the lower hinge of the hinge-type upper guide plate, and its end abuts against the lower guide plate.

5. The impact-resistant, wind direction, air volume, and wind speed adjustable air curtain system according to claim 1, characterized in that, The outlet of the variable frequency fan is sealed to the inlet of the metal static pressure box.

6. The impact-resistant adjustable air curtain system with wind direction, air volume, and air velocity according to claim 1, characterized in that, The fixed support is fixedly installed on the wall or bracket at the opening of the high and low temperature test chamber by expansion bolts.

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