Indoor air interchanger

Abstract

The utility model discloses an indoor ventilation device, which belongs to the technical field of ventilation equipment, and comprises a windproof cavity, a filter screen, a wall body and an air pipe, a push rod is welded and fixed on the back of a blade, one end of the push rod is hinged with a main rod, and two groups of push parts are arranged on the back of the blade. Each group of pushing parts comprises a first connecting rod, a second connecting rod and an air cylinder, the first connecting rod is in hinged connection with the main rod, the second connecting rod is in hinged connection with the first connecting rod, the air cylinder is fixedly connected with the second connecting rod, each group of pushing parts is located in an air pipe, and the air pipe is located in a wall. A boss is fixedly welded in the air pipe, an air cylinder is fixedly installed on the upper surface of the boss through a plug pin, a power switch is installed on the inner surface of the wall in a threaded mode, and the air cylinder is in circuit connection with the power switch. And the air circulation is better realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation equipment, and in particular relates to an indoor ventilation device. Background Art

[0002] The indoor ventilation device uses mechanical methods to deliver sufficient fresh air into the indoor space, while expelling the dirty air that does not meet the hygiene requirements, so that the indoor air meets the hygiene requirements and the needs of the production process.

[0003] Although various indoor ventilation devices are available under existing technologies, the following problems still exist: existing indoor ventilation devices cannot limit the air volume and quality by limiting the size of the ventilation duct, resulting in users being unable to adjust the air volume requirements according to on-site conditions.

[0004] Therefore, an indoor ventilation device is now proposed, which allows users to set the required air volume according to the actual indoor conditions to better achieve air circulation. Utility Model Content

[0005] The purpose of the present invention is to provide an indoor ventilation device to address the existing technical defects and solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an indoor ventilation device comprising a plurality of windproof cavities, a filter screen disposed within the windproof cavities, a wall, and an air duct located within the wall. The windproof cavities are fixed to a surface of the wall facing the outside of the room. A plurality of blades are connected to bearings within the windproof cavities. A push rod is fixed to the side of the blades facing the room, and one end of the push rod is hinged to a main rod.

[0007] Two groups of pushing components are provided on the side of the blade facing the indoor room, and each group of the pushing components includes a first connecting rod, a second connecting rod and a cylinder. The first connecting rod is hinged to the main rod, and the second connecting rod is hinged to the first connecting rod. The output end of the cylinder is fixedly connected to one end of the second connecting rod. Each group of the pushing components is located in the air duct, and a boss is fixedly connected to the bottom of the cylinder by a pin. A power switch is installed on the side of the wall facing the indoor room, and the cylinder is circuit-connected to the power switch.

[0008] The utility model further describes that the filter is located on the side of the blade facing the outdoors, and a number of spring assemblies are provided on the side of the outer ring of the filter. The spring assembly includes a handle, a slot block and a spring, and a number of sliding grooves are provided on the outer side of the filter to cooperate with the spring assembly.

[0009] The utility model further describes that the slot block is slidably arranged in the slide slot, the handle is fixed on the slot block, the spring is fixed to the handle and one side of the slide slot, and three limiting grooves are provided on the inner ring surface of the windproof cavity.

[0010] The utility model further describes that a cavity is opened on the surface of the wall facing the indoor side, a base is fixed at the bottom of the cavity, a fan is fixed on the upper surface of the base by threads, the fan is located in the center of the cavity, and the fan is arranged directly opposite the air outlet of the air duct.

[0011] The utility model further illustrates that the filter screen includes a first filter layer and a second filter layer.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the present invention realizes the flipping movement of the blades by providing a pushing component, the magnetic switch installed on the cylinder can pre-set the limit movement distance of the piston rod to avoid interference problems, the flipping angle of the blades is controlled by pressing the power switch at the right time and the number of times, and the air volume is controlled by the adjustable blades;

[0013] Whether installing or removing the filter, it is all done through the filter spring assembly. When the worker pulls the handle on the spring assembly, the spring will be squeezed to drive the slot block to move in the slide. After the filter is placed, the slot block is reset by the pressure of the spring and snaps into the limit slot. The same working principle is also used during removal, making the installation and removal of the filter efficient and one-step.

[0014] The filter is equipped with different material layers. The first layer of gauze material is used to filter larger suspended particles, and the second layer uses activated carbon fiber felt pads to filter suspended particles with PM values ​​less than 2.5, so that the air entering the air duct is purified and clean air is circulated indoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a left side view - full cross-sectional view of the utility model;

[0018] Figure 3 This is an enlarged schematic diagram of area A of the present utility model;

[0019] Figure 4 This is a schematic diagram of the windproof component of the utility model being closed;

[0020] Figure 5 This is a schematic diagram of the windproof component of the utility model being opened;

[0021] Figure 6 It is a rear view of the utility model;

[0022] Figure 7 This is a schematic diagram of the filter structure of the utility model;

[0023] Figure 8 This is a schematic diagram of the windproof cavity structure of the utility model without a filter installed;

[0024] In the figure: 1. Windproof cavity; 2. Filter; 3. Spring assembly; 4. Limiting groove; 5. Blade; 6. Wall; 7. Air duct; 8. Main rod; 9. Push rod; 10. First connecting rod; 11. Second connecting rod; 12. Cylinder; 13. Boss; 14. Fan; 15. Base; 16. Cavity; 17. Power switch. DETAILED DESCRIPTION

[0025] The following is a non-limiting detailed description of the technical solution of the present invention in conjunction with preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0026] See also Figure 1-8 The utility model provides a technical solution: an indoor ventilation device, comprising a plurality of windproof cavities 1, a filter screen 2 arranged in the windproof cavity 1, a wall 6 and an air duct 7 located inside the wall 6. The windproof cavity 1 is fixed to the surface of the wall 6 facing the outside of the room. A plurality of blades 5 are connected to the bearing inside the windproof cavity 1. A push rod 9 is fixed to the side of the blade 5 facing the room. One end of the push rod 9 is hinged to a main rod 8.

[0027] Two groups of pushing components are provided on the side of the blade 5 facing the indoor room, and each group of pushing components includes a first connecting rod 10, a second connecting rod 11 and a cylinder 12. The first connecting rod 10 is hinged to the main rod 8, and the second connecting rod 11 is hinged to the first connecting rod 10 to facilitate relative rotation between the two rods. The output end of the cylinder 12 is fixedly connected to one end of the second connecting rod 11. Each group of pushing components is located in the air duct 7. A boss 13 is fixedly connected to the bottom of the cylinder 12 by a pin, so as to utilize the pushing components to realize the flipping movement of the blade 5 and control the amount of air in the air duct 7. A power switch 17 is installed on the side of the wall 6 facing the indoor room, and the cylinder 12 is circuit-connected to the power switch 17.

[0028] The filter screen 2 is located on the side of the blade 5 facing the outside. A plurality of spring assemblies 3 are provided on the outer side of the filter screen 2. The spring assembly 3 includes a handle, a slot block and a spring. A plurality of sliding grooves are provided on the outer side of the filter screen 2 to facilitate the contraction and movement of the slot block.

[0029] The card slot block is slidably arranged in the slide groove, the handle is fixed on the card slot block, and the spring is fixed to the handle and one side of the slide groove. Three limit grooves 4 are provided on the inner ring surface of the windproof cavity 1. When installing the filter 2, the worker holds the handle and pulls it inward to move the card slot block in the slide groove, squeezing the spring to contract in the slide groove. After the filter 2 is placed, the card slot block is reset in the slide groove by the elastic force of the spring and is locked in the limit groove 4, thereby realizing convenient installation and removal of the filter 2;

[0030] The size of the card slot block on the spring assembly 3 matches the limit slot 4, and the filter screen 2 can be installed and removed efficiently based on the clearance fit;

[0031] A cavity 16 is formed on the surface of the wall 6 facing the interior, a base 15 is fixed to the bottom of the cavity 16, and a fan 14 is fixed to the upper surface of the base 15 by screw threads. The fan 14 is located in the center of the cavity 16 and is arranged directly opposite the air outlet of the air duct 7. When the fan 14 is started, it guides the air to circulate efficiently.

[0032] The filter 2 includes a first filter layer and a second filter layer. The first filter layer is arranged close to the outdoor side. The first filter layer includes but is not limited to gauze material, which is used to block large particles of dust in the air. The second filter layer includes but is not limited to activated carbon fiber felt pad as filter material, which is used to block respirable dust smaller than 2.5 microns, thereby achieving air purification layer by layer.

[0033] Working principle:

[0034] The power switch 17 is mounted on the inner surface of the wall 6. When the user does not press the power switch 17, the blades 5 in the windproof cavity 1 are in a closed state, and wind cannot enter the air duct 7. Even if the fan 14 is turned on, wind cannot circulate through the air duct 7.

[0035] When the power switch 17 is pressed, the cylinder 12 located in the air duct 7 is started, and the cylinder 12 drives its own piston rod to extend forward. When the piston rod extends, it drives the second connecting rod 11 fixed to it to move forward. The second connecting rod 11 is hinged to the first connecting rod 10. Therefore, the displacement of the second connecting rod 11 will cause the first connecting rod 10 to rotate relative to it. The first connecting rod 10 is also hinged to the main rod 8. Therefore, the relative rotation of the first connecting rod 10 will push the main rod 8 forward, and the push rod 9 welded to the main rod 8 will also move synchronously, so that the blade 5, under the action of the push rod 9, relies on the internal embedded bearing to slowly turn upward. When the blade 5 turns to 90 degrees, the magnetic switch on the cylinder 12 will stop the extension of the piston rod. At this time, the blade 5 is in the open state, which can ventilate the air duct 7. The air first passes through the filter 2 and is purified by the two layers of material in the filter 2. Finally, the purified air reaches the fan 14 located in the cavity 16 for air circulation.

[0036] By utilizing the principle of clearance fit, the size of the slot block on the spring assembly 3 is set to be smaller than the limit slot 4, which makes it very convenient for workers to install and remove the filter 2;

[0037] The flipping process of blade 5 from 0 degrees to 90 degrees will last for a period of time, during which the air volume will gradually increase. However, during this process, if the user feels that the air volume is just right, he can press the power switch 17 again to actively stop the operation of cylinder 12. If the power switch 17 is pressed twice in succession, cylinder 12 will recognize it as automatic reset, causing the piston rod to retract and blade 5 to close, finally realizing the adjustment of blade 5 and control of air volume.

[0038] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only used to facilitate the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] Finally, it should be pointed out that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An indoor ventilation device, comprising a plurality of windproof cavities (1), a filter (2) disposed in the windproof cavities (1), a wall (6), and an air duct (7) located inside the wall (6), characterized in that: The windproof cavity (1) is fixed on a side surface of a wall (6) facing the outside of the room, a plurality of blades (5) are connected to bearings inside the windproof cavity (1), a push rod (9) is fixed on the side of the blades (5) facing the room, and one end of the push rod (9) is hinged to a main rod (8); Two groups of pushing components are provided on the side of the blade (5) facing indoors, and each group of pushing components includes a first connecting rod (10), a second connecting rod (11) and a cylinder (12). The first connecting rod (10) is hingedly connected to the main rod (8), and the second connecting rod (11) is hingedly connected to the first connecting rod (10). The output end of the cylinder (12) is fixedly connected to one end of the second connecting rod (11). Each group of pushing components is located in the air duct (7). A boss (13) is fixedly connected to the bottom of the cylinder (12) by a pin. A power switch (17) is installed on the side of the wall (6) facing indoors, and the cylinder (12) is circuit-connected to the power switch (17).

2. An indoor ventilation device according to claim 1, characterized in that: The filter (2) is located on the side of the blade (5) facing the outside of the room. A plurality of spring assemblies (3) are provided on the side of the outer ring of the filter (2). The spring assemblies (3) include a handle, a slot block, and a spring. A plurality of sliding grooves are provided on the outer side of the filter (2) to cooperate with the spring assemblies (3).

3. An indoor ventilation device according to claim 2, characterized in that: The slot block is slidably arranged in the slide slot, the handle is fixed on the slot block, the spring is fixed to the handle and one side of the slide slot, and three limiting slots (4) are provided on the inner ring surface of the windproof cavity (1).

4. An indoor ventilation device according to claim 3, characterized in that: The size of the slot block on the spring assembly (3) matches the limiting slot (4).

5. The indoor ventilation device according to claim 1, characterized in that: A cavity (16) is formed on a surface of the wall (6) facing the interior, a base (15) is fixed to the bottom of the cavity (16), a fan (14) is fixed to the upper surface of the base (15) by means of screw threads, and the fan (14) is located at the center of the cavity (16). The fan (14) is arranged facing the air outlet of the air duct (7).

6. The indoor ventilation device according to claim 1, characterized in that: The filter screen (2) comprises a first filter layer and a second filter layer.

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