Fresh air filtering structure

Abstract

The utility model relates to the field of fresh air machines, in particular to a fresh air filtering structure. Comprising a box body, a heat exchange core is installed in the box body, an outdoor air inlet is formed in one side of the box body, an indoor air inlet is formed in one side of the box body, an adjusting structure is arranged at the position, corresponding to the outdoor air inlet and the indoor air inlet, of the inner wall of the box body, and the adjusting structure comprises two installation frames which are fixedly connected with the box body; a primary filter screen and an activated carbon filter screen are slidably connected to the inner wall of the mounting frame, sliding rods are slidably connected to the two sides of the interior of the mounting frame, limiting frames are fixedly connected to the upper ends of the sliding rods, the surfaces of the limiting frames are slidably connected with the mounting frame, and springs sleeve the arc surfaces of the sliding rods. The fresh air filtering structure provided by the utility model has the advantages that the filter screen in the box body can be maintained and replaced under the condition that the box cover and the maintenance cover plate are not disassembled through the baffle which can be conveniently opened and closed, the limiting effect on the filter screen in the mounting frame is good, and the disassembly and assembly operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the field of fresh air fans, and in particular to a fresh air filtering structure. Background Art

[0002] A fresh air fan is a mechanical device that can discharge turbid air from indoor space and draw in fresh air from outdoor space. The filtering structure in the fresh air fan is composed of multiple filters with different functions, which can filter out floating objects, PM2.5, and harmful gas components in outdoor fresh air, allowing high-quality air to enter indoor space.

[0003] In the prior art, when the fresh air fan is used, the turbid air in the room enters the box from the indoor air inlet of the box, and the turbid air enters the heat exchange core through the filtering structure. At the same time, the fresh air outside enters the heat exchange core from the outdoor air inlet of the box through the filtering structure. After the indoor turbid air and the outdoor fresh air undergo heat exchange, the turbid air is discharged from the box through the outdoor outlet fan, and the fresh air is discharged from the box through the indoor outlet fan, thereby achieving continuous renewal of the indoor air. After the fresh air fan has worked for a long time, the primary filter in the box needs to be cleaned and the activated carbon filter needs to be replaced. However, this operation will cause the following problems: when the user maintains the primary filter and the activated carbon filter, the user needs to disassemble and assemble the maintenance cover or the box cover. The disassembly and assembly operation requires tightening multiple screws, which is cumbersome and inefficient. There is a lack of a limiting structure for the filter in the box. When the fresh air fan is suspended and installed indoors, the filter is easily slipped and damaged during maintenance. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the prior art that the maintenance efficiency of the filtering structure is low and the filtering net lacks position limiting.

[0005] In order to solve the above technical problems, the utility model provides a fresh air filtering structure, comprising: a box body, a box cover is fixedly connected to the upper surface of the box body, a maintenance cover is fixedly connected to the upper surface of the box cover, a heat exchange core is installed inside the box body, an outdoor air inlet is installed on one side of the box body, an indoor air outlet is installed on the channel corresponding to the outdoor air inlet on one side of the box body, an indoor air inlet is installed on one side of the box body, an outdoor air outlet is installed on the channel corresponding to the indoor air inlet on one side of the box body, and an adjustment structure is provided on the inner wall of the box body corresponding to the outdoor air inlet and the indoor air inlet, and the adjustment structure comprises Two installation frames, the installation frame is fixedly connected to the box body, the inner wall of the installation frame is slidably connected with a primary filter screen and an activated carbon filter screen, the inner sides of the installation frame are slidably connected with sliding rods, the upper ends of the sliding rods are fixedly connected to the limiting frame, the surface of the limiting frame is slidably connected to the installation frame, the arc surface of the sliding rod is sleeved with a spring, the two ends of the spring are respectively fixedly connected to the installation frame and the limiting frame, the inner wall of the limiting frame is slidably connected with the limiting plate, the two sides of the maintenance cover are slidably connected with baffles at the positions corresponding to the two installation frames, and two positioning rods are threadedly inserted at the positions corresponding to the baffles on the upper surface of the maintenance cover.

[0006] The effect achieved by the above components is: through the baffle that can be easily opened and closed, the filter in the box can be maintained and replaced without removing the box cover and the maintenance cover. The filter has a good limiting effect in the installation frame and the disassembly and assembly operation is simple and convenient.

[0007] Preferably, the upper surfaces of the primary filter screen and the activated carbon filter screen are fixedly connected with auxiliary belts, and the auxiliary belts are cloth belts.

[0008] The effect achieved by the above components is: the primary filter or the activated carbon filter is driven to move by operating the auxiliary belt, which is convenient for users to operate.

[0009] Preferably, an anti-skid pad is fixedly connected to the lower surface of the limiting plate, and a plurality of anti-skid grooves are formed on the surface of the anti-skid pad.

[0010] The effects achieved by the above components are: increasing the friction of the lower surface of the limiting plate through the anti-slip pad, thereby increasing the limiting effect of the limiting plate.

[0011] Preferably, two reserved grooves are provided on the upper surface of the limiting frame, and the reserved grooves are arc-shaped grooves.

[0012] The effect achieved by the above components is: the limit frame and the limit plate are moved by means of the reserved groove, so that the user can operate the limit frame and the limit plate conveniently.

[0013] Preferably, an anti-skid groove is provided on the upper surface of the baffle at a position corresponding to the positioning rod, and a plurality of anti-skid protrusions are fixedly connected to the inner wall of the anti-skid groove.

[0014] The effect achieved by the above components is: the friction between the positioning rod and the baffle is increased through the anti-slip groove, so that the positioning rod has a better limiting effect on the baffle.

[0015] Preferably, two round rods are fixedly connected to the inner wall of the maintenance cover, and the arc surfaces of the round rods are slidably connected to the baffle.

[0016] The effect achieved by the above components is: the baffle is further limited by the round rod, so that the baffle is more stable when moving along the inner wall of the maintenance cover.

[0017] Preferably, an auxiliary groove is formed on the side of the baffle, and two auxiliary frames are fixedly connected to the positions of the box cover corresponding to the two baffles, and the auxiliary frames are slidably connected to the inner walls of the auxiliary groove.

[0018] The effect achieved by the above components is: through the cooperation of the auxiliary frame and the auxiliary groove, the baffle plate and the box cover are more fully connected to prevent gas from overflowing.

[0019] Compared with the related art, the fresh air filtering structure provided by the utility model has the following beneficial effects:

[0020] The utility model provides a fresh air filtering structure, when the fresh air fan is in use, the turbid air in the room enters the box body from the indoor air inlet of the box body, the turbid air enters the heat exchange core through the filter structure, at the same time, the outdoor fresh air enters the heat exchange core from the outdoor air inlet of the box body through the filter structure, after the indoor turbid air and the outdoor fresh air undergo heat exchange, the turbid air is discharged from the box body through the outdoor outlet fan, and the fresh air is discharged from the box body through the indoor outlet fan, so as to achieve continuous renewal of indoor air. After the fresh air fan has worked for a long time, it is necessary to clean the primary filter screen in the box body and replace the activated carbon filter screen. However, this operation will cause the following problems: when the user maintains the primary filter screen and the activated carbon filter screen, it is necessary to disassemble and assemble the maintenance cover plate or the box cover, and the disassembly and assembly operation requires tightening multiple screws, which is cumbersome and inefficient. There is a lack of a limiting structure for the filter screen in the box body. When the fresh air fan is suspended and installed indoors, the filter screen is easily to slide down and be damaged directly during maintenance. By setting an adjusting structure, when maintaining the primary filter screen and the activated carbon filter screen, the positioning rod is first rotated, and the positioning rod is replaced by The auxiliary thread moves in the direction away from the baffle, releases the limit on the baffle, and then slides the baffle into the maintenance cover, and then moves the limit frame in the direction away from the installation frame. During this process, the limit frame drives the slide rod to move, the spring is in a stretched state, and the limit frame drives the limit plate inside it away from the primary filter and the activated carbon filter, and then slides the limit plate completely into the limit frame. At this time, the primary filter and the activated carbon filter can be slid out of the installation frame for maintenance. After the maintenance is completed, slide them into the installation frame, then slide the limit plate out of the limit frame, and release the limit frame The limit frame moves toward the installation frame under the action of the spring force, and the limit frame drives the limit plate to move toward the primary filter and the activated carbon filter, and squeezes and limits them, and then slides the baffle out of the maintenance cover, and rotates the positioning rod in the opposite direction to move the positioning rod toward the baffle and squeeze the baffle, thereby achieving maintenance and replacement of the filter in the box body without disassembling the box cover and the maintenance cover through the baffle that can be easily opened and closed. The limiting effect of the filter in the installation frame is good, and the disassembly and assembly operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A structural schematic diagram of a fresh air filtering structure provided by the utility model;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the box;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure of the regulatory structure shown;

[0024] Figure 4 for Figure 3 A partial structural schematic diagram of the regulating structure shown;

[0025] Figure 5 for Figure 4 A schematic diagram of the disassembled structure of the installation frame;

[0026] Figure 6 for Figure 5 A schematic diagram of the structure of the limit frame;

[0027] Figure 7 for Figure 2 Schematic diagram of the local structure of the regulatory structure;

[0028] Figure 8 for Figure 7 Schematic diagram of the structure of the maintenance cover.

[0029] Numbers in the figure: 1. Box body; 2. Box cover; 3. Maintenance cover; 4. Heat exchange core; 5. Outdoor air inlet; 6. Indoor fan; 7. Indoor air inlet; 8. Outdoor fan; 9. Adjustment structure; 901. Installation frame; 902. Primary filter; 903. Activated carbon filter; 904. Auxiliary belt; 905. Sliding rod; 906. Limiting frame; 907. Spring; 908. Limiting plate; 909. Anti-skid pad; 910. Reserved groove; 911. Baffle; 912. Positioning rod; 913. Anti-skid groove; 914. Round rod; 915. Auxiliary groove; 916. Auxiliary frame. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0032] See also Figures 1 to 8 A fresh air filtering structure provided by an embodiment of the utility model includes: a box body 1, a box cover 2 is fixedly connected to the upper surface of the box body 1, a maintenance cover 3 is fixedly connected to the upper surface of the box cover 2, a heat exchange core 4 is installed inside the box body 1, an outdoor air inlet 5 is installed on one side of the box body 1, an indoor air outlet fan 6 is installed on the channel corresponding to the outdoor air inlet 5 on one side of the box body 1, an indoor air inlet 7 is installed on one side of the box body 1, an outdoor air outlet fan 8 is installed on the channel corresponding to the indoor air inlet 7 on one side of the box body 1, and an adjustment structure 9 is provided on the inner wall of the box body 1 at the position corresponding to the outdoor air inlet 5 and the indoor air inlet 7.

[0033] In the embodiments of the present invention, please refer to Figures 2 to 8The adjusting structure 9 includes two mounting frames 901, the mounting frame 901 is fixedly connected to the box body 1, the inner wall of the mounting frame 901 is slidably connected with a primary filter screen 902 and an activated carbon filter screen 903, both sides of the interior of the mounting frame 901 are slidably connected with a slide rod 905, the upper end of the slide rod 905 is fixedly connected to a limited position frame 906, the surface of the limited position frame 906 is slidably connected to the mounting frame 901, the arc surface of the slide rod 905 is sleeved with a spring 907, the two ends of the spring 907 are respectively fixedly connected to the mounting frame 901 and the limited position frame 906, the inner wall of the limited position frame 906 is slidably connected to the limited position plate 908, and the positions of the two mounting frames 901 on both sides of the maintenance cover 3 are A baffle 911 is slidably connected, and two positioning rods 912 are threadedly inserted on the upper surface of the maintenance cover 3 at the position corresponding to the baffle 911. Through the baffle 911 that can be easily opened and closed, the filter screen in the box body 1 can be maintained and replaced without disassembling the box cover 2 and the maintenance cover 3. The limiting effect of the filter screen in the installation frame 901 is good, and the disassembly and assembly operation is simple and convenient. The upper surfaces of the primary filter screen 902 and the activated carbon filter screen 903 are fixedly connected with auxiliary belts 904, and the auxiliary belts 904 are cloth belts. The primary filter screen 902 or the activated carbon filter screen 903 is moved by operating the auxiliary belts 904, which is convenient for users to operate. The lower surface of the limiting plate 908 is fixed A non-slip pad 909 is connected, and a plurality of non-slip grooves are provided on the surface of the non-slip pad 909. The non-slip pad 909 increases the friction of the lower surface of the limit plate 908 and increases the limiting effect of the limit plate 908. Two reserved grooves 910 are provided on the upper surface of the limit frame 906. The reserved grooves 910 are arc-shaped grooves. The limit frame 906 and the limit plate 908 are moved with the help of the reserved grooves 910, which is convenient for users to operate the limit frame 906 and the limit plate 908. An anti-slip groove 913 is provided on the upper surface of the baffle plate 911 at the position corresponding to the positioning rod 912. The inner wall of the anti-slip groove 913 is fixedly connected with a plurality of non-slip protrusions. The anti-slip groove 913 increases the friction between the positioning rod 912 and the baffle plate 911. The friction between them makes the positioning rod 912 have a better limiting effect on the baffle 911, and the inner wall of the maintenance cover 3 is fixedly connected with two round rods 914, and the arc surface of the round rod 914 is slidably connected to the baffle 911. The baffle 911 is further limited by the round rod 914, so that the baffle 911 is more stable when moving along the inner wall of the maintenance cover 3, and an auxiliary groove 915 is opened on the side of the baffle 911. Two auxiliary frames 916 are fixedly connected to the positions of the box cover 2 corresponding to the two baffles 911, and the auxiliary frame 916 is slidably connected to the inner wall of the auxiliary groove 915. The auxiliary frame 916 and the auxiliary groove 915 cooperate to make the baffle 911 and the box cover 2 more fully docked to prevent gas overflow.

[0034] The working principle of a fresh air filtering structure provided by the utility model is as follows: when the fresh air fan is in use, the turbid air in the room enters the box body 1 from the indoor air inlet 7 of the box body 1, and the turbid air enters the heat exchange core 4 through the filtering structure. At the same time, the outdoor fresh air enters the heat exchange core 4 from the outdoor air inlet 5 of the box body 1 through the filtering structure. After the indoor turbid air and the outdoor fresh air undergo heat exchange, the turbid air is discharged from the box body 1 through the outdoor air outlet 8, and the fresh air is discharged from the box body 1 through the indoor air outlet 6, thereby achieving continuous renewal of the indoor air. After the fresh air fan has worked for a long time, the primary filter screen 902 in the box body 1 needs to be cleaned and the activated carbon filter screen 903 needs to be replaced. However, this operation will cause the following problems: the user may When the filter 902 and the activated carbon filter 903 are maintained, the maintenance cover 3 or the box cover 2 needs to be disassembled and assembled. The disassembly and assembly operation requires tightening multiple screws, which is cumbersome and inefficient. There is no limiting structure for the filter in the box body 1. When the fresh air fan is suspended and installed indoors, the filter is easy to slide down and be damaged during maintenance. By setting the adjustment structure 9, when the primary filter 902 and the activated carbon filter 903 are maintained, the positioning rod 912 is first rotated. The positioning rod 912 moves in a direction away from the baffle 911 with the help of the thread to release the limit on the baffle 911, and then the baffle 911 is slid into the maintenance cover 3, and then the limiting frame 906 is moved in a direction away from the installation frame 901. During this process, the limiting frame 906 drives the sliding rod 905 to move , the spring 907 is in a stretched state, the limit frame 906 drives the limit plate 908 inside it to move away from the primary filter 902 and the activated carbon filter 903, and then the limit plate 908 is completely slid into the limit frame 906, at this time, the primary filter 902 and the activated carbon filter 903 can be slid out of the installation frame 901 and maintained, after the maintenance is completed, it is slid into the installation frame 901, and then the limit plate 908 is slid out of the limit frame 906, the limit frame 906 is released, and the limit frame 906 moves toward the installation frame 901 under the action of the elastic force of the spring 907, and the limit frame 906 drives the limit plate 908 to move toward the primary filter 902 and the activated carbon filter 903, and squeezes and limits them, and then the baffle 91 1 Slide out the maintenance cover 3, rotate the positioning rod 912 in the opposite direction, so that the positioning rod 912 moves toward the direction close to the baffle 911 and squeezes the baffle 911, wherein the primary filter 902 or the activated carbon filter 903 is driven to move by operating the auxiliary belt 904, which is convenient for the user to operate, and the friction of the lower surface of the limiting plate 908 is increased by the anti-slip pad 909 to increase the limiting effect of the limiting plate 908, and the limiting frame 906 and the limiting plate 908 are moved by means of the reserved groove 910, which is convenient for the user to operate the limiting frame 906 and the limiting plate 908, and the friction between the positioning rod 912 and the baffle 911 is increased by the anti-slip groove 913, so that the limiting effect of the positioning rod 912 on the baffle 911 is better, and the baffle 911 is further limited by the round rod 914.The baffle 911 is more stable when moving along the inner wall of the maintenance cover 3. The baffle 911 is more fully connected with the box cover 2 through the cooperation of the auxiliary frame 916 and the auxiliary groove 915 to prevent gas from overflowing. The baffle 911 that can be easily opened and closed can be used to maintain and replace the filter in the box body 1 without disassembling the box cover 2 and the maintenance cover 3. The filter has a good limiting effect in the installation frame 901 and the disassembly and assembly operation is simple and convenient.

[0035] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A fresh air filtering structure, characterized in that: include: A box body (1), the upper surface of the box body (1) is fixedly connected to a box cover (2), the upper surface of the box cover (2) is fixedly connected to a maintenance cover plate (3), a heat exchange core (4) is installed inside the box body (1), an outdoor air inlet (5) is installed on one side of the box body (1), an indoor air outlet (6) is installed on a channel corresponding to the outdoor air inlet (5) on one side of the box body (1), an indoor air inlet (7) is installed on one side of the box body (1), an outdoor air outlet (8) is installed on a channel corresponding to the indoor air inlet (7) on one side of the box body (1), an adjustment structure (9) is provided at positions of the inner wall of the box body (1) corresponding to the outdoor air inlet (5) and the indoor air inlet (7), the adjustment structure (9) comprises two installation frames (901), the installation frames (901) are fixedly connected to the box body (1), and the installation frames (901) are fixedly connected to the box body (1). ) is slidably connected to the inner wall of the installation frame (901) with a primary filter screen (902) and an activated carbon filter screen (903), both sides of the interior of the installation frame (901) are slidably connected with slide rods (905), the upper end of the slide rod (905) is fixedly connected to a limit frame (906), the surface of the limit frame (906) is slidably connected to the installation frame (901), the arc surface of the slide rod (905) is sleeved with a spring (907), the two ends of the spring (907) are respectively fixedly connected to the installation frame (901) and the limit frame (906), the inner wall of the limit frame (906) is slidably connected to a limit plate (908), both sides of the maintenance cover (3) are slidably connected to the positions of the two installation frames (901), and two positioning rods (912) are threadedly inserted on the upper surface of the maintenance cover (3) corresponding to the position of the baffle (911).

2. A fresh air filtering structure according to claim 1, characterized in that: The upper surfaces of the primary filter screen (902) and the activated carbon filter screen (903) are both fixedly connected with auxiliary belts (904), and the auxiliary belts (904) are cloth belts.

3. A fresh air filtering structure according to claim 1, characterized in that: The lower surface of the limiting plate (908) is fixedly connected with an anti-skid pad (909), and the surface of the anti-skid pad (909) is provided with a plurality of anti-skid grooves.

4. A fresh air filtering structure according to claim 1, characterized in that: The upper surface of the limiting frame (906) is provided with two reserved grooves (910), and the reserved grooves (910) are arc-shaped grooves.

5. A fresh air filtering structure according to claim 1, characterized in that: An anti-skid groove (913) is provided on the upper surface of the baffle (911) at a position corresponding to the positioning rod (912), and a plurality of anti-skid protrusions are fixedly connected to the inner wall of the anti-skid groove (913).

6. A fresh air filtering structure according to claim 1, characterized in that: Two round rods (914) are fixedly connected to the inner wall of the maintenance cover (3), and the arc surfaces of the round rods (914) are slidably connected to the baffle (911).

7. A fresh air filtering structure according to claim 1, characterized in that: An auxiliary groove (915) is provided on the side of the baffle (911), and two auxiliary frames (916) are fixedly connected to the box cover (2) at positions corresponding to the two baffles (911), and the auxiliary frames (916) are slidably connected to the inner wall of the auxiliary groove (915).

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