Mute fan for heating and ventilation engineering

Abstract

The utility model relates to the technical field of silent fans, and discloses a silent fan for heating and ventilation engineering, which comprises an outer box, the left side and the right side of the outer box are communicated with conical barrels, the rear side of the outer wall of the outer box is fixedly connected with a direct current motor, the inner wall of the outer box is fixedly connected with a partition plate, the inner wall of the partition plate is fixedly connected with a volute, and the volute is fixedly connected with a fan. The output end of the direct current motor penetrates through the outer box and is fixedly connected with a limiting rotary column, the front end of the limiting rotary column penetrates through the partition plate and the volute and is fixedly connected with a limiting block, and the outer wall of the limiting block is fixedly connected with a plurality of fixing bolts. According to the utility model, the direct-current motor is started to enable the limiting rotary column and the limiting block to rotate, the arc-shaped inclined fan blades and the air suction push plate are driven to rotate, and the air is pushed all around by the air suction push plate rotating at a high speed, is blown out from the right side of the volute and is discharged through the conical barrel, so that the air supply efficiency is improved, and a high-power motor is not needed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mute fan especially relates to the mute fan of heating ventilation engineering. BACKGROUND

[0002] In modern building environment, heating ventilation engineering is committed to creating comfortable and healthy indoor air environment for people, and mute fan as the key equipment plays an indispensable role, mainly responsible for driving air flow in heating equipment, realizing the effective circulation of indoor air, ventilation and the function of adjusting temperature and humidity, its remarkable feature lies in, while guaranteeing good air conveying performance, as far as possible reducing the noise generated in the operation process, avoiding the interference to the work, life and study of indoor personnel.

[0003] The early mute fan is usually composed of motor, impeller, volute and simple support structure, this structure has many drawbacks when running, among which the problem of poor air supply effect is particularly prominent, in order to solve this problem, part of the design adopts high-power motor to enhance its air supply effect, but this brings new trouble, that is, the increase of motor power leads to the sharp increase of noise, which is contrary to the original intention of mute fan, with the continuous progress of technology, the existing mute fan adopts more optimized impeller shape design, however, the existing mute fan still has deficiencies in air supply effect, because the gap between the impeller and the volute of the existing fan is not accurate enough during operation, when the high-power motor drives the impeller to rotate at high speed, part of the airflow will leak at the gap between the impeller and the volute, resulting in the reduction of the actual air flow participating in effective air supply, although the optimization of impeller and volute structure avoids the excessive turbulence of airflow to some extent, but due to the existence of gap leakage problem, the fan is difficult to fully exert the advantages of high-power motor, and cannot realize the ideal air supply effect, which cannot meet the ventilation demand of places with high requirement for indoor air quality. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides the mute fan of heating ventilation engineering, aiming at improving the problem that the gap between the impeller and the volute leaks, resulting in the reduction of the actual air flow participating in effective air supply.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: the mute fan of heating engineering, including the outer box, the left and right sides of outer box are communicated with the conical cylinder, the rear side fixedly connected with the direct current motor of the outer wall of outer box, the inner wall fixedly connected with the partition of outer box, the inner wall fixedly connected with the volute of partition, the output end of direct current motor penetrates outer box and is fixedly connected with the limit rotary column, the front end of limit rotary column penetrates partition and volute and is fixedly connected with the limit block, the outer wall of limit block is fixedly connected with a plurality of fixed bolts, the outer wall of limit block is fixedly connected with a plurality of arc inclined fan blade, the front end middle part of limit block is fixedly connected with a plurality of air suction push plate, the outer wall front side of partition is provided with the air inlet, the outer wall left side of the front part of outer box is provided with the filtering and purification mechanism, and the filtering and purification mechanism is used to filter and purify the air inhaled.

[0006] As further description of the above technical solution:

[0007] The filtering and purification mechanism includes two clamping screws, the rear side of two clamping screws is fixedly connected on the upper and lower sides of the front part of the outer box, the outer wall of the clamping screw is provided with a drawer, the inner wall of the drawer is clamped with the outer wall of two clamping screws, the rear left and right sides of the drawer are fixedly connected with filter plates, the rear middle part of the drawer is fixedly connected with a photocatalyst filter screen, the inner wall rear left side of the outer box is fixedly connected with a limit recess block, and the inner wall left and right sides of the limit recess block are fixedly connected with ultraviolet lamps.

[0008] As further description of the above technical solution:

[0009] The outer wall of the front part of the outer box is provided with an observation window, the outer wall of the observation window is fixedly connected with an outer frame, the outer wall of the front part of the outer box is fixedly connected with a limiting block, and the front side of the limiting block is fixedly connected with a nameplate.

[0010] As further description of the above technical solution:

[0011] The outer wall right side bottom end of the outer box is fixedly connected with a fixed plate, and the right upper and lower sides of the fixed plate are fixedly connected with state lights.

[0012] As further description of the above technical solution:

[0013] The outer wall of the outer box is fixedly connected with a plurality of L-shaped mounting plates, and the top of the L-shaped mounting plate is provided with a clamping groove.

[0014] As further description of the above technical solution:

[0015] The outer wall of the conical cylinder is fixedly connected with a rubber mounting sleeve, and the outer wall of the rubber mounting sleeve is fixedly connected with a connecting bolt.

[0016] As a further description of the above technical solutions:

[0017] The front part of the pull-out plate is rotationally connected with a U-shaped column, and the outer wall of the U-shaped column is fixedly connected with a sponge sleeve.

[0018] As a further description of the above technical solutions:

[0019] The inner wall of the partition plate is fixedly connected with a limiting cylinder, the inner wall of the limiting cylinder is rotationally connected with an annular magnet, and the inner wall of the annular magnet is clamped with the outer wall of the limiting rotating column.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. In the utility model, the limiting rotating column and the limiting block are rotated by starting the direct current motor, the arc-shaped inclined fan blade and the air suction push plate are driven to rotate, which makes the left conical cylinder generate airflow, the airflow is sucked into the outer box, the air enters the volute through the air inlet hole, is pushed to the periphery by the high-speed rotating air suction push plate, and is blown out from the right side of the volute, and is discharged through the conical cylinder, so that the air supply efficiency is improved, and a high-power motor is not needed.

[0022] 2. In the utility model, the filter plate filters dust, the ultraviolet lamp disinfects and sterilizes, the photocatalyst filter screen catalytically degrades harmful gas, kills bacteria, decomposes toxins, realizes harmless treatment of air, and finally performs secondary filtration through the filter plate on the other side, when the filter plate is replaced or cleaned, only the screw needs to be disassembled, and the pull-out plate can be pulled out, so that cleaning or replacement is facilitated, and the air purification and disinfection effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of the silent fan for heating and ventilation engineering is provided for the utility model;

[0024] Figure 2 A front view of the silent fan for heating and ventilation engineering is provided for the utility model;

[0025] Figure 3 A sectional view of the silent fan for heating and ventilation engineering is provided for the utility model;

[0026] Figure 4 A structure diagram of the volute of the silent fan for heating and ventilation engineering is provided for the utility model;

[0027] Figure 5 A sectional view of the volute of the silent fan for heating and ventilation engineering is provided for the utility model.

[0028] LEGEND:

[0029] 1, outer box; 2, filter purification mechanism; 201, pull plate; 202, clamping screw; 203, filter plate; 204, photocatalyst filter screen; 205, limiting concave block; 206, ultraviolet lamp; 3, conical cylinder; 4, DC motor; 5, partition plate; 6, volute; 7, arc-shaped inclined fan blade; 8, air suction push plate; 9, air inlet hole; 10, limiting block; 11, limiting rotating column; 12, fixing bolt; 13, observation window; 14, outer frame; 15, limiting block; 16, nameplate; 17, fixed plate; 18, status lamp; 19, L-shaped mounting plate; 20, clamping groove; 21, rubber mounting sleeve; 22, connecting bolt; 23, U-shaped column; 24, sponge sleeve; 25, limiting cylinder; 26, annular magnet. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Referring to Figure 1 , Figure 3 and Figure 5 , one embodiment provided by the present application: a mute fan for heating engineering, comprising an outer box 1, the left and right sides of the outer box 1 are communicated with conical cylinders 3, the rear side of the outer wall of the outer box 1 is fixedly connected with a DC motor 4, the inner wall of the outer box 1 is fixedly connected with a partition plate 5, the partition plate 5 divides the inside of the outer box 1 into two areas, the inner wall of the partition plate 5 is fixedly connected with a volute 6, the output end of the DC motor 4 penetrates through the outer box 1 and is fixedly connected with a limiting rotating column 11, the front end of the limiting rotating column 11 penetrates through the partition plate 5 and the volute 6 and is fixedly connected with a limiting block 10, the DC motor 4 is started to drive the limiting rotating column 11 to rotate, thereby driving the limiting block 10 to rotate, so that the arc-shaped inclined fan blades 7 rotate, and at the same time, the air suction push plate 8 above rotates, at this time, the left conical cylinder 3 produces airflow which is sucked into the outer box 1, the outer wall of the limiting block 10 is fixedly connected with a plurality of fixing bolts 12, the outer wall of the limiting block 10 is fixedly connected with a plurality of arc-shaped inclined fan blades 7, the front end of the limiting block 10 is fixedly connected with a plurality of air suction push plates 8, the high-speed rotating air suction push plate 8 pushes the sucked air to the four directions, and at the same time, under the pushing of the arc-shaped inclined fan blades 7, the pushed air is blown out from the right side of the volute 6 above and the right conical cylinder 3, the front side of the outer wall of the partition plate 5 is provided with an air inlet hole 9, the front left side of the outer wall of the outer box 1 is provided with a filter purification mechanism 2, the filter purification mechanism 2 is used for filtering and purifying the sucked air;

[0032] Specific, use when starting direct current motor 4 drive limit position rotating column 11 rotation, and drive limit block 10 rotation, so that the arc-shaped inclined fan blade 7 rotation, at the same time the upper air suction push plate 8 will follow the rotation, the left side of the conical barrel 3 will produce airflow is sucked into the outer box 1, the partition plate 5 will be divided into two areas in the outer box 1, the air sucked into the front side of the partition plate 5, through the upper air inlet hole 9 into the volute 6, high-speed rotating air suction push plate 8 will be pushed to the air around, at the same time under the push of the arc-shaped inclined fan blade 7, so that the air pushed from the right side of the volute 6 above, and from the right side of the conical barrel 3, so that the efficiency of the air supply is improved, without using high-power motor to improve the air supply effect.

[0033] Referring to Figure 1 , Figure 2 and Figure 3 , the filtering and purifying mechanism 2 comprises two clamping screws 202, the rear sides of the two clamping screws 202 are fixedly connected to the upper and lower sides of the front part of the outer box 1, the outer wall of the clamping screw 202 is provided with a drawer plate 201, the inner walls of the drawer plate 201 are clamped with the outer walls of the two clamping screws 202, and the drawer plate 201 can be pulled out from above the outer box 1 by disassembling the clamping screw 202. The left and right sides of the rear part of the drawer plate 201 are fixedly connected with the filter plate 203, the rear middle part of the drawer plate 201 is fixedly connected with the photocatalyst filter screen 204, the left side of the rear part of the inner wall of the outer box 1 is fixedly connected with the limiting recess block 205, the left and right sides of the inner wall of the limiting recess block 205 are fixedly connected with the ultraviolet lamp 206, the filter plate 203 intercepts dust and impurities in the air, the filtered air can be disinfected and sterilized by starting the ultraviolet lamp 206, and the photocatalyst filter screen 204 has a strong promoting effect on the ultraviolet lamp 206. The photocatalyst above the photocatalyst filter screen 204 generates catalytic effect, degrades toxic and harmful gases in the air, kills various bacteria, decomposes toxins released by bacteria or fungi, and realizes harmless treatment.

[0034] Specifically, when the air from the left side of the conical barrel 3 enters the outer box 1, the dust and impurities in the air are intercepted by the filter plate 203, the filtered air can be disinfected and sterilized by starting the ultraviolet lamp 206, and the photocatalyst filter screen 204 has a strong promoting effect on the ultraviolet lamp 206. The photocatalyst above the photocatalyst filter screen 204 generates catalytic effect, degrades toxic and harmful gases in the air, kills various bacteria, decomposes toxins released by bacteria or fungi, and realizes harmless treatment. The last side of the filter plate 203 is filtered on the other side, and when the filter plate 203 needs to be replaced or cleaned, the drawer plate 201 can be pulled out from above the outer box 1 by disassembling the clamping screw 202, so that the cleaning or replacement is completed, and the incoming air is well purified and disinfected.

[0035] With reference to Figure 1 、 Figure 2 and Figure 3 , the outer wall of the outer box 1 is provided with an observation window 13 in the front part. The running status of the fan inside the outer box 1 can be directly observed through the observation window 13. The outer wall of the observation window 13 is fixedly connected with an outer frame 14. The outer frame 14 can stabilize the observation window 13 and strengthen the connection between the observation window 13 and the outer box 1. The bottom end of the front part of the outer wall of the outer box 1 is fixedly connected with a limiting block 15. The limiting block 15 can provide installation space for a nameplate 16. The front side of the limiting block 15 is fixedly connected with the nameplate 16. The nameplate 16 can quickly know the basic performance and technical specifications of the fan. The bottom end of the right side of the outer wall of the outer box 1 is fixedly connected with a fixed plate 17. The fixed plate 17 can provide installation space for a status light 18. The right part of the fixed plate 17 is fixedly connected with the status light 18 on the upper side and the lower side. The status light 18 indicates the working status of the fan by different colors and flashing frequencies. The outer wall of the outer box 1 is fixedly connected with a plurality of L-shaped mounting plates 19. The L-shaped mounting plates 19 provide a convenient connection structure for the installation of the fan. The top part of the L-shaped mounting plate 19 is provided with a clamping groove 20. The clamping groove 20 can be tightly clamped with the corresponding installation accessories.

[0036] Specifically, through the observation window 13, the operator can directly observe the running status of the fan inside the outer box 1 without disassembling the outer box 1. Through the outer frame 14, the observation window 13 can be stabilized, and the connection strength between the observation window 13 and the outer box 1 can be strengthened to prevent the observation window 13 from loosening under the influence of vibration generated during the operation of the fan. At the same time, the edge of the observation window 13 is also protected to avoid damage to the observation window 13 due to external impact. Through the limiting block 15, installation space can be provided for the nameplate 16. Through the nameplate 16, the basic performance and technical specifications of the fan can be quickly known, which is very helpful for the maintenance and management of the equipment and the traceability of the product. Through the fixed plate 17, installation space can be provided for the status light 18. The status light 18 indicates the working status of the fan by different colors and flashing frequencies. Through the L-shaped mounting plate 19, a convenient connection structure is provided for the installation of the fan. It can be connected with the wall of the building, the ceiling or other installation supports to realize the stable installation of the fan. Through the clamping groove 20, it can be tightly clamped with the corresponding installation accessories to further enhance the stability and reliability of the installation, prevent the fan from shifting or loosening due to vibration and other factors during operation, and ensure the safe and stable operation of the fan.

[0037] With reference to Figure 1 、 Figure 3 and Figure 4, the outer wall of the rubber mounting sleeve 21 is fixedly connected with a connecting bolt 22, and the connecting bolt 22 firmly fixes the conical barrel 3 at a required position; the front part of the pull-out plate 201 is rotationally connected with a U-shaped column 23, the U-shaped column 23 can facilitate pulling out the pull-out plate 201, the outer wall of the U-shaped column 23 is fixedly connected with a sponge sleeve 24, and the sponge sleeve 24 can improve the comfort of the U-shaped column 23; the inner wall of the partition plate 5 is fixedly connected with a limiting cylinder 25, the limiting cylinder 25 can provide a stable mounting position for the annular magnet 26, the inner wall of the limiting cylinder 25 is rotationally connected with the annular magnet 26, the inner wall of the annular magnet 26 is clamped with the outer wall of the limiting rotating column 11, and the annular magnet 26 can play a certain limiting and stabilizing effect on the limiting rotating column 11 through magnetic force;

[0038] Specifically, the rubber mounting sleeve 21 can buffer the vibration transmission between the conical barrel 3 and the external connecting component, reduce the loosening and wear of the components caused by the vibration of the fan during operation, prevent external dust and impurities from entering the fan, and affect the normal operation of the fan. The connecting bolt 22 firmly fixes the conical barrel 3 at a required position, ensures that the conical barrel 3 remains stable during the operation of the fan, maintains the integrity and stability of the overall structure of the fan, the U-shaped column 23 can facilitate pulling out the pull-out plate 201, and the sponge sleeve 24 can improve the comfort of the U-shaped column 23. The limiting cylinder 25 can provide a stable mounting position for the annular magnet 26, ensure that the annular magnet 26 does not shake or displace randomly during the operation of the fan, and the annular magnet 26 can play a certain limiting and stabilizing effect on the limiting rotating column 11 through magnetic force. The limiting rotating column 11 is prevented from deviating or shaking due to high-speed rotation or external force impact, ensuring the stability of the transmission structure inside the fan, and further improving the reliability of the overall operation of the fan.

[0039] Working principle: during operation, first, start the DC motor 4 to drive the limiting rotating column 11 to rotate, and then drive the limiting block 10 to rotate, so that the arc-shaped inclined fan blade 7 rotates, at the same time, the upper air suction push plate 8 also rotates with the fan blade, at this time, the left conical barrel 3 generates airflow, which is sucked into the outer box 1, the partition plate 5 divides the inner space of the outer box 1 into two areas, the sucked air flows to the front side of the partition plate 5, and enters the volute 6 through the upper air inlet hole 9. The air suction push plate 8 rotates at high speed and pushes the sucked air to the surrounding, and under the auxiliary pushing of the arc-shaped inclined fan blade 7, the pushed air is blown out from the upper right side of the volute 6 and discharged through the right conical barrel 3. This process improves the air supply efficiency, and high-power motors are not needed to achieve high-efficiency air supply effect;

[0040] And through the filter purification mechanism 2, when the external air enters the outer box 1 through the left conical barrel 3, it will first pass through the filter plate 203 to intercept dust and impurities in the air, then the ultraviolet lamp 206 is started to disinfect and sterilize the filtered air, because the ultraviolet lamp 206 has a significant promoting effect on the photocatalyst filter screen 204, it excites the photocatalyst on the photocatalyst filter screen 204 to produce catalysis, thereby degrading toxic and harmful gases in the air and killing various bacteria, in addition, it can also decompose the toxins released by bacteria or fungi to achieve harmless treatment, after this series of treatment, the air will be finally filtered by the filter plate 203 on the other side, when the filter plate 203 needs to be replaced or cleaned, only need to disassemble the clamping screw 202, the drawer plate 201 can be pulled out from the top of the outer box 1, so as to facilitate cleaning or replacement work, through this process, it ensures that the air sent in is effectively purified and disinfected.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A quiet fan for heating, ventilation and air conditioning, comprising an outer casing (1), characterised in that: The left and right sides of the outer box (1) are communicated with conical barrels (3), the rear side of the outer wall of the outer box (1) is fixedly connected with a direct current motor (4), the inner wall of the outer box (1) is fixedly connected with a partition plate (5), the inner wall of the partition plate (5) is fixedly connected with a volute (6), the output end of the direct current motor (4) penetrates through the outer box (1) and is fixedly connected with a limiting rotating column (11), the front end of the limiting rotating column (11) penetrates through the partition plate (5) and the volute (6) and is fixedly connected with a limiting block (10), the outer wall of the limiting block (10) is fixedly connected with a plurality of fixing bolts (12), the outer wall of the limiting block (10) is fixedly connected with a plurality of arc-shaped inclined fan blades (7), the front end middle part of the limiting block (10) is fixedly connected with a plurality of air suction push plates (8), the front side of the outer wall of the partition plate (5) is provided with an air inlet hole (9), and the front left side of the outer wall of the outer box (1) is provided with a filtering and purifying mechanism (2).

2. The quiet HVAC fan of claim 1, wherein: The filtering and purifying mechanism (2) comprises two clamping screws (202), the rear sides of the two clamping screws (202) are fixedly connected to the upper and lower sides of the front of the outer box (1), the outer wall of the clamping screw (202) is provided with a drawer (201), the inner walls of the drawer (201) are clamped with the outer walls of the two clamping screws (202), the left and right sides of the rear part of the drawer (201) are fixedly connected with filter plates (203), the middle part of the rear side of the drawer (201) is fixedly connected with a photocatalyst filter screen (204), the left rear part of the inner wall of the outer box (1) is fixedly connected with a limiting recess block (205), and the left and right sides of the inner wall of the limiting recess block (205) are fixedly connected with ultraviolet lamps (206).

3. The quiet HVAC fan of claim 1, wherein: The front part of the outer wall of the outer box (1) is provided with an observation window (13), the outer wall of the observation window (13) is fixedly connected with an outer frame (14), the front part of the outer wall of the outer box (1) is fixedly connected with a limiting block (15), and the front side of the limiting block (15) is fixedly connected with a nameplate (16).

4. The quiet HVAC fan of claim 1, wherein: The right bottom end of the outer wall of the outer box (1) is fixedly connected with a fixed plate (17), and the right upper and lower sides of the fixed plate (17) are fixedly connected with state lights (18).

5. The quiet HVAC fan of claim 1, wherein: The outer wall of the outer box (1) is fixedly connected with a plurality of L-shaped mounting plates (19), and the top of the L-shaped mounting plate (19) is provided with a clamping groove (20).

6. The quiet HVAC fan of claim 1, wherein: The outer wall of the conical barrel (3) is fixedly connected with a rubber mounting sleeve (21), and the outer wall of the rubber mounting sleeve (21) is fixedly connected with a connecting bolt (22).

7. The quiet HVAC fan of claim 2, wherein: The front part of the drawer (201) is rotatably connected with a U-shaped column (23), and the outer wall of the U-shaped column (23) is fixedly connected with a sponge sleeve (24).

8. The quiet HVAC fan of claim 1, wherein: The inner wall of the rear side of the partition plate (5) is fixedly connected with a limiting cylinder (25), the inner wall of the limiting cylinder (25) is rotatably connected with an annular magnet (26), and the inner wall of the annular magnet (26) is clamped with the outer wall of the limiting rotating column (11).

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