Fresh air circulating device

Abstract

The utility model belongs to the technical field of air filtering devices, and particularly relates to a fresh air circulating device which comprises a wall body, an air inlet shell, an air inlet cover, an air exhaust shell, an air exhaust cover, an outer shutter, a fan and a metal screen plate, and a dismounting device is arranged in the air inlet cover. According to the fresh air circulating device, when a filter screen and an activated carbon screen plate need to be cleaned, a lower louver is detached, then a worker inserts the hand into an air inlet cover, a clamping block is rotated to move out of a clamping groove formed in the air inlet cover, and then a fixing rod is pulled downwards until the filter screen and the activated carbon screen plate are pulled out of the air inlet cover; the problems that in the background technology, due to the fact that the filter screen plate and the activated carbon screen plate are used for a long time in the using process, too large impurities are accumulated, the filter screen plate and the activated carbon screen plate need to be regularly cleaned, and the cleaning efficiency is high are solved. According to the device, a filter screen plate and an activated carbon screen plate are inconvenient to disassemble and assemble, and the cleaning efficiency is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtering devices, in particular to a fresh air circulation device. Background Art

[0002] Fresh air refers to the air outside the building, or the air that has not been circulated by the air conditioning and ventilation system before entering the building. The fresh air outlet of the air-conditioning unit, fresh air unit and variable air volume air-conditioning unit is directly connected to the external space of the building to introduce fresh air. The air supply mechanism and the exhaust mechanism form an independent air treatment mechanism, which is divided into two types: ducted fresh air system and ductless fresh air system. The ducted fresh air system consists of a fresh air fan and duct accessories. The fresh air fan purifies the outdoor air and introduces it into the room, and the indoor air is discharged through the pipe.

[0003] During the use of the existing fresh air circulation device, in order to prevent birds from entering, a metal mesh is preferably installed in the blinds. However, after the metal mesh is installed, it is not convenient for the staff to check during the maintenance and inspection of the ventilation duct. It is necessary to use tools to remove the screws for disassembly, which is very troublesome. In addition, the long-term removal of screws for installation and disassembly will cause certain wear and tear on the metal protective mesh, which is not convenient for checking and repairing the ventilation duct.

[0004] For example, a fresh air circulation device disclosed in Chinese patent CN218722023U is characterized in that two clamping mechanisms are arranged on the outer cover, and the fixing blocks on the two clamping mechanisms are fixedly connected to the metal mesh plate. Therefore, when the metal mesh plate is placed in the outer cover, the two clamping posts on the clamping mechanism slide into the corresponding clamping slots along the two slide rail grooves, and the clamping posts are pushed into the clamping slots for clamping by the springs arranged at the left ends of the clamping posts, so that the metal mesh plate is clamped and fixed. When maintenance and inspection are required, the outer blinds are opened to support the outer blinds with the inclined telescopic rods, so that the two handles are slid toward each other, so that the two handles respectively drive the two clamping posts to slide toward the middle, so that the four clamping posts are respectively separated from the four clamping slots, so that the metal mesh plate can be easily taken out of the outer cover, thereby facilitating the installation and disassembly of the metal mesh plate and facilitating maintenance and inspection by the staff.

[0005] However, when the device is used for a long time, the filter screen and the activated carbon screen will be overly large and will accumulate impurities. The filter screen and the activated carbon screen need to be cleaned regularly. The device is not convenient for disassembling and assembling the filter screen and the activated carbon screen, which affects the cleaning efficiency.

[0006] For this reason we urgently need to provide a kind of fresh air circulation device. Utility Model Content

[0007] The purpose of the utility model is to provide a fresh air circulation device to solve the problem proposed in the above background technology that during use, the filter screen and the activated carbon screen will be used for a long time, resulting in excessive impurities accumulation, and the filter screen and the activated carbon screen need to be cleaned regularly. The device is not convenient for disassembling and assembling the filter screen and the activated carbon screen, which affects the cleaning efficiency.

[0008] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a fresh air circulation device, comprising a wall, an air inlet shell, an air inlet hood, an exhaust shell, an exhaust hood, an external shutter, a fan and a metal mesh plate, the air inlet shell is fixedly installed on the right side of the wall, the air inlet hood is fixedly installed on the left side of the air inlet shell, the exhaust shell is fixedly installed on the rear end of the right side of the wall, the exhaust hood is fixedly installed on the left side of the exhaust shell, the external shutter is hinged on the right side of the air inlet shell and the exhaust shell, the fan is installed at the front and rear ends inside the air inlet shell and the exhaust shell, the metal mesh plate is installed inside the wall and the exhaust shell on the right side of the fan, and a disassembly and assembly device is provided inside the air inlet hood.

[0009] The disassembly and assembly device comprises a disassembly and assembly unit and a fixing unit. The disassembly and assembly unit is arranged inside the air inlet cover, and the fixing unit is arranged inside the air inlet cover.

[0010] The disassembly and assembly unit includes a lower louver, a filter, a mounting block, a connecting rod, a fixing rod, a clamping block and an activated carbon mesh plate. The lower louver is installed at the bottom of the air inlet hood and the exhaust hood by bolts, the filter is installed at the upper end inside the air inlet hood, the activated carbon mesh plate is installed at the lower end inside the air inlet hood, the mounting block is fixedly installed at the bottom of the filter and the top of the activated carbon mesh plate, the upper and lower ends of the connecting rod are installed inside the upper and lower mounting blocks, the fixing rod is fixedly installed at the front and rear sides of the bottom of the activated carbon mesh plate, and the clamping block is rotatably connected to the lower end of the fixing rod.

[0011] Preferably, the fixing unit includes a spring, a clamp and a pull rod, one end of the spring is fixedly installed on the front and rear sides of the upper and lower mounting blocks, the clamp is fixedly installed on the other end of the spring and extends to the inside of the connecting rod, and the pull rod is fixedly installed on the side of the clamp away from the connecting rod and extends to the outside of the mounting block.

[0012] Preferably, the front and rear surfaces of the lower end of the air inlet cover are provided with a slot larger than the block, so that the block can rotate in the slot to avoid being blocked by the slot when the block rotates around the fixing rod.

[0013] Preferably, the upper and lower mounting blocks are provided with mounting grooves having a diameter equal to that of the connecting rod, so that the filter screen and the activated carbon screen plate can be conveniently connected to the connecting rod through the mounting grooves.

[0014] Preferably, a clamping hole with a diameter equal to that of the clamping head is opened inside the connecting rod, and the filter screen and the filter screen are fixed on the connecting rod by clamping the front and rear clamping heads with the clamping hole opened in the connecting rod.

[0015] Preferably, the shape of the clamping head at one end away from the spring is hemispherical, so as to facilitate the clamping connection between the clamping head and the clamping hole formed in the connecting rod.

[0016] Preferably, a sealing ring is installed on the outside of the filter screen and the activated carbon mesh plate. After the filter screen and the activated carbon mesh plate are installed inside the air inlet hood, the sealing ring is used to seal the gaps between the filter screen, the activated carbon mesh plate and the air inlet hood to prevent untreated air from blowing into the room.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The fresh air circulation device is provided with a disassembly and assembly unit. When the filter and the activated carbon screen need to be cleaned, the lower shutter is removed, and then the staff inserts their hands into the air inlet hood and rotates the card block to move the card block out of the card slot provided in the air inlet hood, and then pulls the fixing rod downward until the filter and the activated carbon screen are pulled out of the air inlet hood, thereby facilitating the removal of the filter and the activated carbon screen from the inside of the air inlet hood. This solves the problem raised in the background technology that during use, the filter and the activated carbon screen will be used for a long time, resulting in excessive accumulation of impurities, and the filter and the activated carbon screen need to be cleaned regularly, and the device is not convenient for disassembling and assembling the filter and the activated carbon screen, affecting the cleaning efficiency.

[0019] 2. The fresh air circulation device is provided with a fixing unit, and the front and rear pull rods are pulled to drive the clamping head away from the clamping hole provided in the connecting rod, so as to remove the filter screen and the activated carbon screen respectively, making it easy to remove the filter screen and the activated carbon screen from the connecting rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the internal structure of the air inlet cover of the utility model;

[0022] Figure 3 This is a cross-sectional view of the internal structure of the air inlet housing of the utility model;

[0023] Figure 4 This is a cross-sectional view of the internal structure of the connection between the mounting block and the connecting rod of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the connection between the clamping block and the air inlet cover of the utility model.

[0025] In the figure: 1. wall; 2. air inlet housing; 3. air inlet hood; 4. exhaust housing; 5. exhaust hood; 6. outer shutter; 7. fan; 8. metal mesh; 901. lower shutter; 902. filter; 903. mounting block; 904. connecting rod; 905. fixing rod; 906. clamping block; 907. activated carbon mesh; 1001. spring; 1002. clamping head; 1003. pull rod. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0028] Embodiment 1:

[0029] A fresh air circulation device comprises a wall 1, an air inlet shell 2, an air inlet hood 3, an exhaust shell 4, an exhaust hood 5, an outer shutter 6, a fan 7 and a metal mesh plate 8. The air inlet shell 2 is fixedly installed on the right side of the wall 1, the air inlet hood 3 is fixedly installed on the left side of the air inlet shell 2, the exhaust shell 4 is fixedly installed on the rear end of the right side of the wall 1, the exhaust hood 5 is fixedly installed on the left side of the exhaust shell 4, the outer shutter 6 is hinged to the right side of the air inlet shell 2 and the exhaust shell 4, the fan 7 is installed at the front and rear ends inside the air inlet shell 2 and the exhaust shell 4, the metal mesh plate 8 is installed inside the wall 1 and the exhaust shell 4 and is located on the right side of the fan 7, and a disassembly and assembly device is provided inside the air inlet hood 3.

[0030] The disassembly and assembly device comprises a disassembly and assembly unit and a fixing unit. The disassembly and assembly unit is arranged inside the air inlet cover 3 , and the fixing unit is arranged inside the air inlet cover 3 .

[0031] The disassembly and assembly unit includes a lower louver 901, a filter screen 902, a mounting block 903, a connecting rod 904, a fixing rod 905, a clamping block 906 and an activated carbon screen plate 907. The lower louver 901 is installed at the bottom of the air inlet hood 3 and the exhaust hood 5 by bolts. The filter screen 902 is installed at the upper end of the air inlet hood 3, and the impurities in the air are filtered by the filter screen 902. The activated carbon screen plate 907 is installed at the lower end of the air inlet hood 3, and the harmful substances in the air are adsorbed by the activated carbon screen plate 907. The mounting block 903 is fixedly installed at the bottom of the filter screen 902 and the top of the activated carbon screen plate 907. The upper and lower mounting blocks 903 are provided with mounting grooves with the same diameter as the connecting rod 904, and the filter screen 90 is convenient to install through the mounting groove. 2 and the activated carbon mesh plate 907 are connected with the connecting rod 904, the upper and lower ends of the connecting rod 904 are installed inside the upper and lower mounting blocks 903, a card hole with the same diameter as the card head 1002 is opened inside the connecting rod 904, and the front and rear two card heads 1002 are connected with the card hole opened in the connecting rod 904, so that the filter 902 and the filter 902 are fixed on the connecting rod 904, and the fixing rod 905 is fixedly installed on the front and rear sides of the bottom of the activated carbon mesh plate 907, and the card block 906 is rotatably connected to the lower end of the fixing rod 905. The front and rear surfaces of the lower end of the air inlet cover 3 are provided with a card slot larger than the card block 906, so that the card block 906 can rotate in the card slot to avoid the card block 906 being blocked by the card slot when rotating around the fixed rod 905.

[0032] Embodiment 2:

[0033] On the basis of Example 1: the fixing unit includes a spring 1001, a clamp 1002 and a pull rod 1003, one end of the spring 1001 is fixedly installed on the front and rear sides of the upper and lower mounting blocks 903, the clamp 1002 is fixedly installed on the other end of the spring 1001 and extends to the inside of the connecting rod 904, the shape of the clamp 1002 away from the end of the spring 1001 is hemispherical, which is convenient for the clamp 1002 to be clamped with the clamp hole opened in the connecting rod 904, and the pull rod 1003 is fixedly installed on the side of the clamp 1002 away from the connecting rod 904 and extends to the outside of the mounting block 903.

[0034] Embodiment three:

[0035] On the basis of Example 1: sealing rings are installed on the outside of the filter 902 and the activated carbon mesh plate 907. After the filter 902 and the activated carbon mesh plate 907 are installed inside the air inlet hood 3, the gaps between the filter 902, the activated carbon mesh plate 907 and the air inlet hood 3 are sealed by the sealing ring to prevent untreated air from blowing into the room.

[0036] When in use, the fan 7 in the air inlet housing 2 is started to allow external air to pass through the air inlet housing 2 into the air inlet hood 3, and then pass into the room after being filtered by the filter 902 and the activated carbon screen 907. At the same time, the fan 7 in the exhaust housing 4 is started to exhaust the indoor air through the exhaust hood 5 and the exhaust housing 4 to the outside, thereby forming a circulating fresh air device for the room. When it is necessary to clean the filter 902 and the activated carbon screen 907, the lower shutter 901 is removed, and then the staff Insert your hand into the air inlet hood 3 and rotate the block 906 to move the block 906 out of the slot provided in the air inlet hood 3, then pull the fixing rod 905 downward until the filter 902 and the activated carbon mesh plate 907 are pulled out of the air inlet hood 3, and then pull the front and rear pull rods 1003 to drive the clamping head 1002 away from the clamping hole provided in the connecting rod 904, thereby removing the filter 902 and the activated carbon mesh plate 907 respectively, and then clean the filter 902 and the activated carbon mesh plate 907.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A fresh air circulation device, comprising a wall (1), an air inlet housing (2), an air inlet cover (3), an exhaust housing (4), an exhaust cover (5), an outer shutter (6), a fan (7) and a metal mesh plate (8), wherein the air inlet housing (2) is fixedly mounted on the right side of the wall (1), the air inlet cover (3) is fixedly mounted on the left side of the air inlet housing (2), the exhaust housing (4) is fixedly mounted on the rear end of the right side of the wall (1), the exhaust cover (5) is fixedly mounted on the left side of the exhaust housing (4), the outer shutter (6) is hinged to the right side of the air inlet housing (2) and the exhaust housing (4), the fan (7) is mounted at the front and rear ends inside the air inlet housing (2) and the exhaust housing (4), and the metal mesh plate (8) is mounted inside the wall (1) and the exhaust housing (4) and is located on the right side of the fan (7), characterized in that: A disassembly and assembly device is provided inside the air inlet cover (3); The disassembly and assembly device comprises a disassembly and assembly unit and a fixing unit, the disassembly and assembly unit is arranged inside the air inlet cover (3), and the fixing unit is arranged inside the air inlet cover (3); The disassembly and assembly unit comprises a lower louver (901), a filter (902), a mounting block (903), a connecting rod (904), a fixing rod (905), a clamping block (906) and an activated carbon screen (907); the lower louver (901) is mounted on the bottom of the air inlet hood (3) and the air exhaust hood (5) by means of bolts; the filter (902) is mounted on the upper end of the air inlet hood (3); the activated carbon screen (907) is mounted on the lower end of the air inlet hood (3); the mounting block (903) is fixedly mounted on the bottom of the filter (902) and the top of the activated carbon screen (907); the upper and lower ends of the connecting rod (904) are mounted inside the upper and lower mounting blocks (903); the fixing rod (905) is fixedly mounted on the front and rear sides of the bottom of the activated carbon screen (907); and the clamping block (906) is rotatably connected to the lower end of the fixing rod (905).

2. A fresh air circulation device according to claim 1, characterized in that: The fixing unit comprises a spring (1001), a clamp (1002) and a pull rod (1003); one end of the spring (1001) is fixedly mounted on the front and rear sides of the upper and lower mounting blocks (903); the clamp (1002) is fixedly mounted on the other end of the spring (1001) and extends to the inside of the connecting rod (904); and the pull rod (1003) is fixedly mounted on a side of the clamp (1002) away from the connecting rod (904) and extends to the outside of the mounting block (903).

3. A fresh air circulation device according to claim 1, characterized in that: The front and rear surfaces of the lower end of the air inlet cover (3) are provided with a slot larger than the block (906).

4. A fresh air circulation device according to claim 1, characterized in that: The upper and lower mounting blocks (903) are provided with mounting grooves having a diameter equal to that of the connecting rod (904).

5. A fresh air circulation device according to claim 1, characterized in that: The connecting rod (904) is provided with a clamping hole having a diameter equal to that of the clamping head (1002).

6. A fresh air circulation device according to claim 2, characterized in that: The shape of the clamp (1002) at one end away from the spring (1001) is hemispherical.

7. A fresh air circulation device according to claim 1, characterized in that: Sealing rings are installed on the outside of the filter screen (902) and the activated carbon screen plate (907).

Images