Round air return column applied to flexible air pipe system

Abstract

The utility model relates to a circular air return column applied to a flexible air pipe system, and belongs to the technical field of air conditioner purification systems.The circular air return column applied to the flexible air pipe system comprises a cloth bag air pipe, a framework for supporting the pipe wall in the circumferential direction is arranged on the cloth bag air pipe, and air return holes are formed in the side wall of the cloth bag air pipe; a first filter screen used for filtering air entering the air return holes is arranged on the inner wall of the cloth bag air pipe, and a second filter screen covering a port of the cloth bag air pipe is arranged at one end of the cloth bag air pipe. The air return column has the advantage of being small in occupied space, the air return column can be prefabricated in a factory and installed in an assembled mode, installation is easy, the air return column can guarantee the cleanliness of the clean room, the humidity in the clean room is balanced, the air return column can be arranged according to needs, the air return hole is matched with a port where the second filter screen is installed to return air, the air return speed is low, and the air return effect is good. And the airflow distribution is uniform and the cleanliness is high.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning purification systems, and particularly to a circular air return column applied to a flexible air duct system. Background Art

[0002] In a clean room air-conditioning purification system, the air return column is mainly used to recover the circulating floor air. The air return column is arranged on the side wall, and its air return opening is arranged at the bottom. This design enables the air return column to recover the floor air to the air handling unit to help achieve the air flow organization of top supply and bottom return, and to meet the requirements of clean room process operations, cleanliness, and humidity.

[0003] The traditional metal air duct air return column is generally rectangular. The lower end of the air return column is connected to the ground, and the upper end is connected to the ceiling. At the same time, a air volume regulating valve and a louvered air outlet are installed on the air return column. The air return column occupies more indoor space, the installation is cumbersome and affects the construction quality, the sealing is difficult and affects the indoor pressure difference, and the single-sided air return wind speed is high, uneven and there are dead corners, affecting humidity and cleanliness. It can be seen that the solution to the air return air flow organization problem in the clean room air-conditioning purification system still needs to be improved.

[0004] Therefore, it is necessary to propose a new type of circular air return column to optimize the air flow organization in the clean room, simplify the installation steps, improve the sealing effect, and solve the air flow organization problem through uniform and sufficient air return. Summary of the Invention

[0005] To overcome the deficiencies or one of the deficiencies proposed in the above background art, an embodiment of the present application provides a circular air return column applied to a flexible air duct system.

[0006] An embodiment of the present application provides a circular air return column applied to a flexible air duct system, including:

[0007] A cloth bag air duct, on which a framework for circumferentially supporting the pipe wall is provided. Return air holes are provided on the side wall of the cloth bag air duct. A first filter screen for filtering the air entering the return air holes is provided on the inner wall of the cloth bag air duct. A second filter screen covering its port is provided at one end of the cloth bag air duct.

[0008] In some embodiments, the cloth bag air duct includes a connection section for connecting to a ventilation device, and a return air section for providing the return air holes and the second filter screen. The connection section and the return air section are interconnected by a first zipper.

[0009] In some embodiments, the cloth bag air duct further includes a fixing section for connecting to a ventilation device. The fixing section and the connection section are interconnected by a second zipper.

[0010] In some embodiments, an annular hoop for pressing the fixing section and a fastener for fixing the annular hoop are provided on the fixing section.

[0011] In some embodiments, the second filter screen is connected to the bag air duct via a third zipper, and the second filter screen is provided with an annular section for folding upward to fit the outer wall of the bag air duct.

[0012] Some embodiments further include a positioning structure for tightening and fixing the bag air duct on the ground.

[0013] In some embodiments, the positioning structure includes a drawstring connected to the bag air duct and a ground nail for tightening and fixing the drawstring on the ground.

[0014] In some embodiments, a hanging ring is provided at the end of the bag air duct, a hook for connecting to the hanging ring is provided at the end of the pull rope away from the ground nail, and a tightener for adjusting the tightness of the pull rope is provided on the pull rope.

[0015] In some embodiments, the bag air duct includes a fireproof layer, a thermal insulation layer and a veneer layer arranged in sequence from the inside to the outside, the fireproof layer is a fireproof fiber cloth, the thermal insulation layer is a rubber-plastic thermal insulation material, and the veneer layer is a PVC mesh cloth.

[0016] In some embodiments, the skeleton includes a plurality of support rings spaced apart along the axial direction of the bag air duct, and a connector for fixing the support rings is disposed on the inner wall of the bag air duct.

[0017] The beneficial effects of the technical solution provided by this application include:

[0018] (1) The return air column of the embodiment of the present application has the advantage of occupying less space. The return air column can be arranged in various places in the room as needed, and can replace the traditional return air column to release the space of the side wall column.

[0019] (2) The return air column in the embodiment of the present application has the advantages of easy installation and easy sealing. The return air column can be prefabricated in the factory and installed in an assembled manner. It is easy to install. The return air column is connected to the ventilation equipment in the sealed clean room only at the ceiling and is basically not involved in the overall sealing process of the room.

[0020] (3) The return air column of the embodiment of the present application can ensure the cleanliness of the clean room and balance the humidity in the clean room. The return air column can be arranged as needed to ensure a balanced airflow organization. The return air holes can be circumferentially distributed on the side wall of the return air column, and the return air can be returned 360 degrees circumferentially. In conjunction with the return air from the port where the second filter is installed, the return air speed is low, the airflow organization is uniform, and the cleanliness is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of an embodiment of the present application;

[0023] Figure 2 It is a schematic structural diagram of the second filter screen of an embodiment of the present application;

[0024] Figure 3 It is an implementation schematic diagram of the positioning and installation of the bottom end of the cloth bag air duct of an embodiment of the present application;

[0025] Figure 4 It is a structural sectional view of the cloth bag air duct of an embodiment of the present application.

[0026] In the accompanying drawings, the list of components represented by each reference numeral is as follows:

[0027] 10. Cloth bag air duct; 11. Fixed section; 111. Ring hoop; 112. Fastener; 12. Connection section; 13. Return air section; 131. Return air hole; 132. First filter screen; 20. Support ring; 30. Second filter screen; 31. Ring section; 40. First zipper; 50. Second zipper; 60. Third zipper;

[0028] 70. Pull rope; 71. Hook; 72. Tightener; 80. Ground nail; 90. Hanging ring;

[0029] 101. Fireproof layer; 102. Insulation layer; 103. Laminating layer. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0031] To overcome the deficiencies or one of the deficiencies proposed in the above background technology, an embodiment of the present application provides a circular return air column applied to a flexible air duct system.

[0032] Compared with the prior art, the technical solution of the present application mainly solves the following technical problems:

[0033] 1. Large space occupation. Traditional return air columns occupy the space beside side walls or columns, significantly increasing the "shared area" cost.

[0034] 2. Complicated installation and difficult sealing. Traditional return air columns are part of the indoor partition. When installing, the indoor building structure and functions need to be considered, with complex working conditions and cumbersome procedures.

[0035] 3. Uneven cleanliness and humidity. Traditional return air columns are randomly arranged in the space beside side walls or columns, usually only one, which makes the air flow in the whole room converge to one place, inevitably resulting in dead air supply areas. At the same time, single-sided air return will cause a relatively high air velocity at the air return opening, and the strong eddy current near the air return opening will cause the diffusion of dust particles, affecting cleanliness.

[0036] 4. Flexible materials are prone to damage, dust accumulation and are not easy to clean. The use of flexible materials indoors has always been restricted, mainly considering their material properties, which are easily damaged during production activities.

[0037] Compared with the prior art, the beneficial effects of the technical solution are as follows:

[0038] 1. Small space occupation. The circular return air column of the flexible duct system can be arranged indoors as needed. After the cross-section is reduced, the space of side walls and columns is released.

[0039] 2. Simple installation and simple sealing. The circular return air column of the flexible duct system is prefabricated in the factory and installed in an assembled manner, with simple installation. It only contacts the sealed clean room at the ceiling and basically does not participate in the overall room sealing process.

[0040] 3. Balanced cleanliness and humidity. The circular return air column of the flexible duct system can be arranged as needed, making the air flow organization balanced. At the same time, the whole circular surface conducts 360-degree air return, with a relatively low air velocity at the air return opening, uniform air flow organization and high cleanliness.

[0041] 4. High strength, no dust accumulation and easy to clean. The outer facing material of the circular return air column of the flexible duct system uses a high-strength dust-proof and easy-to-clean facing material, with beautiful appearance and not affected by production activities.

[0042] In summary, the utility model has superiority over the prior art, can improve the use effect of the return air column, can play the role of saving space, convenient installation and guiding the indoor air flow organization, and realize air conditioning indexes such as cleanliness and humidity.

[0043] See Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible duct system, including:

[0044] The cloth bag air duct 10 is provided with a framework for circumferentially supporting the pipe wall. The side wall of the cloth bag air duct 10 is provided with a return air hole 131, and the inner wall of the cloth bag air duct 10 is provided with a first filter screen 132 for filtering the air entering the return air hole 131. One end of the cloth bag air duct 10 is provided with a second filter screen 30 covering its port.

[0045] The circular return air column applied to the flexible air duct system in the embodiment of the present application uses the cloth bag air duct 10 as the main body. The cloth bag air duct 10 uses the framework installed inside to circumferentially support the pipe wall. The side wall of the cloth bag air duct 10 is provided with a return air hole 131, and the inner wall of the cloth bag air duct 10 is provided with a first filter screen 132 for filtering the air entering the return air hole 131. Both ends of the cloth bag air duct 10 are open. Its upper end is used to communicate with the ventilation equipment, and the lower end is connected with a second filter screen 30.

[0046] Exemplarily, the return air holes 131 in this embodiment are evenly arranged circumferentially on the side wall of the cloth bag air duct 10 and are arranged near the end where the second filter screen 30 is located, which can realize 360-degree circumferential return air. Both the first filter screen 132 and the second filter screen 30 are air filter screens. The return air holes 131 cooperate with the port where the second filter screen 30 is installed for return air. The return air cross-section is large, which can effectively reduce the return air speed, make the air flow organization uniform and the cleanliness high.

[0047] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible air duct system. The cloth bag air duct 10 of the circular return air column applied to the flexible air duct system includes a connection section 12 for communicating with the ventilation equipment and a return air section 13 for arranging the return air holes 131 and the second filter screen 30. The connection section 12 and the return air section 13 are interconnected through a first zipper 40.

[0048] The cloth bag air duct 10 in the embodiment of the present application adopts a segmented design. The cloth bag air duct 10 includes a connection section 12 and a return air section 13. The connection section 12 and the return air section 13 are interconnected through a first zipper 40 to achieve rapid installation. During use, the return air section 13 is convenient for disassembly and replacement. Further, the return air section 13 with different numbers of return air holes 131 can be set for replacement and use to meet the return air volume requirements of different installation scenarios.

[0049] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible air duct system. The cloth bag air duct 10 of the circular return air column applied to the flexible air duct system further includes a fixed section 11 for connecting the ventilation equipment. The fixed section 11 and the connection section 12 are interconnected through a second zipper 50.

[0050] The cloth bag air duct 10 of the embodiment of the present application further includes a fixed section 11. During use, the upper end of the fixed section 11 is fixedly connected to the metal pipe orifice of the clean room ventilation equipment, and a second zipper 50 for connecting the connecting section 12 is installed at the lower end of the fixed section 11, so that the connecting section 12 and the return air section 13 can be quickly installed and introduced to the site for use.

[0051] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible air duct system. An annular hoop 111 for pressing the fixed section 11 and a fastener 112 for fixing the annular hoop 111 are provided on the fixed section 11 of the circular return air column applied to the flexible air duct system.

[0052] The upper end of the fixed section 11 of the embodiment of the present application is sleeved on the metal pipe orifice of the clean room ventilation equipment. The fixed section 11 is pressed against the outer periphery of the metal pipe orifice through the annular hoop 111, and then the metal pipe orifice is connected by installing the fastener 112, so that the fixed section 11 is hermetically connected to the metal pipe orifice, facilitating the subsequent installation of the connecting section 12 and the return air section 13.

[0053] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible air duct system. The second filter screen 30 of the circular return air column applied to the flexible air duct system is connected to the cloth bag air duct 10 through a third zipper 60, and an annular section 31 for folding upward and fitting against the outer wall surface of the cloth bag air duct 10 is provided on the second filter screen 30.

[0054] The second filter screen 30 of the embodiment of the present application is connected to the cloth bag air duct 10 through a third zipper 60, which is convenient for disassembling the second filter screen 30 for cleaning or replacement. Further, a circle of fabric is sewn on the edge of the second filter screen 30, and the fabric is connected end to end in the circumferential direction to form an annular section 31. After the second filter screen 30 is connected to the cloth bag air duct 10 through the third zipper 60, the annular section 31 can be folded upward and fit against the outer wall of the cloth bag air duct 10 to ensure the connection sealing effect.

[0055] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular return air column applied to a flexible air duct system. The circular return air column applied to the flexible air duct system further includes a positioning structure for tightly fixing the cloth bag air duct 10 above the ground.

[0056] After the installation of the cloth bag air duct 10 in the embodiment of the present application, it is suspended above the ground. Therefore, the air return holes 131 on the bottom end and the side wall of the cloth bag air duct 10 can cooperate for air return, with a large air return cross-section, which can effectively reduce the air return wind speed, making the air flow organization uniform. To prevent the cloth bag air duct 10 from shaking under the influence of air flow during use, a positioning structure is provided at the end of the cloth bag air duct 10. The positioning structure can tighten and fix the cloth bag air duct 10 above the ground to ensure the stable operation of the cloth bag air duct 10.

[0057] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular air return column applied to a flexible air duct system. The positioning structure of the circular air return column applied to the flexible air duct system includes a pull rope 70 connected to the cloth bag air duct 10 and a ground nail 80 for tightening and fixing the pull rope 70 on the ground.

[0058] The positioning structure of the embodiment of the present application includes a pull rope 70 and a ground nail 80. During use, one end of the pull rope 70 is connected to the bottom end of the cloth bag air duct 10, and the other end of the pull rope 70 is fixed and tightened on the ground through the ground nail 80, so as to ensure that the cloth bag air duct 10 will not shake under the influence of air flow during use.

[0059] In some alternative embodiments: Refer to Figures 1 to 4 As shown, the embodiment of the present application provides a circular air return column applied to a flexible air duct system. A hanging ring 90 is provided at the end of the cloth bag air duct 10 of the circular air return column applied to the flexible air duct system. A hook 71 for connecting the hanging ring 90 is provided at the end of the pull rope 70 away from the ground nail 80, and a tightening device 72 for adjusting the tightness of the pull rope 70 is provided on the pull rope 70.

[0060] A hanging ring 90 is installed on the cloth bag air duct 10 in the embodiment of the present application. A hook 71 is installed at the end of the pull rope 70 away from the ground nail 80, and a tightening device 72 is also installed on the pull rope 70. During specific use, the pull rope 70 can be conveniently connected to the hanging ring 90 at the end of the cloth bag air duct 10 through the hook 71. The other end of the pull rope 70 is fixed on the ground through the ground nail 80. Finally, the pull rope 70 is tightened by adjusting the tightening device 72 on the pull rope 70, so as to tighten the cloth bag air duct 10 and keep the cloth bag air duct 10 vertical.

[0061] In this example, the hanging ring 90 is a D-shaped buckle. The number of D-shaped buckles is four and they are installed circumferentially and equidistantly on the periphery of the second filter screen 30. The ground nail 80 is a hook nail, which includes a nail and a Z-shaped hook. The hook nail is fixed on the ground directly below the center of the second filter screen 30 and is connected to at least two symmetrically arranged hanging rings 90 through the pull rope 70.

[0062] In some alternative embodiments: Refer to Figures 1 to 4As shown, an embodiment of the present application provides a circular return air column applied to a flexible air duct system, and the bag air duct 10 of the circular return air column applied to the flexible air duct system includes a fireproof layer 101, a thermal insulation layer 102 and a veneer layer 103 arranged in sequence from the inside to the outside, the fireproof layer 101 is a fireproof fiber cloth, the thermal insulation layer 102 is a rubber-plastic thermal insulation material, and the veneer layer 103 is a PVC mesh cloth.

[0063] The bag air duct 10 of the embodiment of the present application includes a fireproof layer 101, a thermal insulation layer 102 and a veneer layer 103 arranged in sequence from the inside to the outside. The fireproof layer 101 preferably adopts Class A fireproof fiber cloth, which has excellent high temperature resistance and structural strength, and can ensure the durability of the bag air duct 10. The thermal insulation layer 102 is a rubber-plastic thermal insulation material, which has the advantages of low thermal conductivity and fire retardancy, and can improve the thermal insulation performance of the bag air duct 10. The veneer layer 103 is a PVC mesh cloth, which is waterproof, dustproof and easy to clean, and can improve the durability of the bag air duct 10.

[0064] In some alternative embodiments: See Figures 1 to 4 As shown, an embodiment of the present application provides a circular return air column applied to a flexible air duct system, the skeleton of the circular return air column applied to the flexible air duct system includes a plurality of support rings 20 axially spaced apart along the bag air duct 10, and a connector for fixing the support ring 20 is provided on the inner wall of the bag air duct 10.

[0065] In the bag air duct 10 of the embodiment of the present application, a plurality of support rings 20 are installed axially at intervals, and the support rings 20 are fixed in the bag air duct 10 through a connector. For example, the connector can be a strap sewn on the inner wall of the bag air duct 10 for binding the support rings 20, or a support ring fixed on the bag air duct 10 for binding the support rings 20, or an annular cloth cover sewn on the inner wall of the bag air duct 10 for passing the support rings 20.

[0066] In addition, since the present invention has the design and application of a circular return air column in the flexible air duct system, the clean room air conditioning purification system effect can be optimized. Therefore, it can be widely used in the fields of building ventilation, HVAC, industrial ventilation, etc.

[0067] In the field of building ventilation, flexible duct systems are widely used in clean production workshops, public buildings and other places. Traditional iron duct systems have problems such as large space occupation, poor airflow organization, and cumbersome installation. The application of circular return air columns can improve airflow organization, improve air supply effect, and make indoor air cleaner and more balanced.

[0068] In the field of heating, ventilation, and air conditioning (HVAC), flexible duct systems are applicable to clean production workshops, large-space workshops without suspended ceilings, etc. By reasonably designing the structure and opening parameters of the circular return air column, indoor air flow organization can be better guided, energy loss can be reduced, and the efficiency of the air conditioning system can be improved.

[0069] In the field of industrial ventilation, flexible duct systems are widely used in places such as warehouses. The application of the circular return air column can reasonably and effectively guide air flow organization in the industrial ventilation system, achieve uniform return air, and improve the working environment.

[0070] With the rapid development of industries such as new energy, photovoltaic, and materials, the demand for ventilation systems is also increasing continuously. As a new type of ventilation duct product, the flexible duct system has the advantages of convenient installation, good flexibility, modular installation, etc., and has broad application prospects and market demand in the market.

[0071] In the description of this application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0072] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including", or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article, or device including the said element.

[0073] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A circular return air column used in a flexible air duct system, characterized in that: include: A bag air duct (10), wherein a skeleton for circumferentially supporting the duct wall is provided on the bag air duct (10), a return air hole (131) is provided on the side wall of the bag air duct (10), a first filter (132) for filtering air entering the return air hole (131) is provided on the inner wall of the bag air duct (10), and a second filter (30) covering the port of the bag air duct (10) is provided at one end of the bag air duct (10); It also includes a positioning structure for tightening and fixing the bag air duct (10) on the ground, the positioning structure including a pull rope (70) connected to the bag air duct (10), and a ground nail (80) for tightening and fixing the pull rope (70) on the ground; a hanging ring (90) is provided at the end of the bag air duct (10), a hook (71) for connecting to the hanging ring (90) is provided at the end of the pull rope (70) away from the ground nail (80), and a tightener (72) for adjusting the tightness of the pull rope (70) is provided on the pull rope (70).

2. The circular return air column for use in a flexible air duct system according to claim 1, characterized in that: The bag air duct (10) comprises a connecting section (12) for connecting to a ventilation device, and a return air section (13) for arranging the return air hole (131) and the second filter (30); the connecting section (12) and the return air section (13) are connected to each other via a first zipper (40).

3. The circular return air column used in the flexible air duct system according to claim 2, characterized in that: The bag air duct (10) further comprises a fixing section (11) for connecting to ventilation equipment, and the fixing section (11) and the connecting section (12) are connected to each other via a second zipper (50).

4. The circular return air column for use in a flexible air duct system according to claim 3, characterized in that: The fixing section (11) is provided with an annular hoop (111) for pressing the fixing section (11), and a fastener (112) for fixing the annular hoop (111).

5. The circular return air column for use in a flexible air duct system according to claim 1, characterized in that: The second filter screen (30) is connected to the bag air duct (10) via a third zipper (60), and the second filter screen (30) is provided with an annular section (31) for folding upwards to fit the outer wall of the bag air duct (10).

6. The circular return air column for use in a flexible air duct system according to claim 1, characterized in that: The bag air duct (10) comprises a fireproof layer (101), a thermal insulation layer (102) and a veneer layer (103) which are arranged in sequence from the inside to the outside, the fireproof layer (101) is a fireproof fiber cloth, the thermal insulation layer (102) is a rubber-plastic thermal insulation material, and the veneer layer (103) is a PVC mesh cloth.

7. The circular return air column for use in a flexible air duct system according to claim 1, characterized in that: The skeleton comprises a plurality of support rings (20) arranged at intervals along the axial direction of the bag air duct (10), and a connecting piece for fixing the support rings (20) is arranged on the inner wall of the bag air duct (10).

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