Air inlet cover and air blower
By designing an air inlet hood with multiple ventilation holes, the problem that the air inlet hood in the prior art cannot take into account both ventilation air volume and filtration effect, achieving more efficient impurity filtration and ventilation, and extending the service life of the blower.
Patent Information
- Application Number
- CN202421097342.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The existing air inlet hood cannot take into account the ventilation volume of the blower and the filtering effect of impurities, resulting in the air inlet hood being easily blocked, the air blowing effect is poor, the motor is easily burned out, and the service life is short.
An air inlet hood is designed, including an annular side enclosure plate and a rear cover plate, and is equipped with a plurality of dispersed vents. The total area of the vents is greater than the ventilation area of the connecting port, the side enclosure plate and the rear cover plate Extend backwards to increase the outer wall area and form a screen-like structure to filter and block impurities to ensure unobstructed air ducts and normal operation of the motor.
Effectively reduce impurities entering the blower, ensure unobstructed air ducts, extend service life, improve the ventilation and cleanliness of the blower, reduce blockage and damage, and extend the service life of the air inlet hood and blower.
Smart Images
Figure CN222228995U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fans, in particular to an air inlet cover and a blower. Background Art
[0002] A blower is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is widely used for ventilation in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. Since the working conditions of blowers are generally harsh, dust and oil in the air can easily enter the blower to block the air duct and cover its motor and other components, making it difficult for the components to dissipate heat and causing damage. Therefore, existing blowers generally have an air inlet cover at the air inlet that can block impurities. However, the existing air inlet cover cannot take into account the ventilation volume of the blower and the filtering effect on impurities, resulting in the air inlet cover of the blower being easily blocked, the blowing effect being poor, or the air duct of the blower being easily blocked, the motor being easily burned out, and the service life being short. Utility Model Content
[0003] The utility model aims to provide an air inlet hood and a blower to solve the technical problems that the existing air inlet hood cannot take into account both the ventilation air volume and the filtering effect of impurities of the blower, resulting in the air inlet hood of the blower being easily blocked and the blowing effect being poor, or the air duct of the blower being easily blocked and the motor being easily burned out and having a short service life.
[0004] In order to solve the above-mentioned problems, the utility model provides an air inlet hood, including a hood body, the hood body including an annular side panel, a front cover plate covering the front end of the side panel and a rear cover plate covering the rear end of the side panel, the front cover plate including a connecting area and a blocking area, the connecting area is provided with a connecting port, and the blocking area is a closed plate body; the side panel and the rear cover plate are both provided with a plurality of dispersed ventilation holes, and the total ventilation area of each of the ventilation holes is greater than the ventilation area of the connecting port.
[0005] Optionally, the total ventilation area of each of the ventilation holes is more than twice the ventilation area of the connecting port.
[0006] Optionally, the axial extension length of the side panel is not less than 350 mm.
[0007] Optionally, the connection port is located in an upper area of the front cover.
[0008] Optionally, the rear cover plate is arranged to be inclined from top to bottom toward the front cover plate.
[0009] Optionally, the front cover plate is surrounded by an annular skirt, the side panels and the rear cover plate are both accommodated in the skirt, and a ventilation gap exists between the skirt and the side panels.
[0010] Optionally, the length of the skirt extending axially from the rear cover plate is 80 mm to 100 mm.
[0011] Optionally, the skirt is in a flared cone shape in a direction from the front cover plate to the rear cover plate.
[0012] Optionally, the angle between the skirt and the side panel ranges from 20° to 30°.
[0013] The utility model also provides a blower, comprising a blower body and the above-mentioned air inlet cover, wherein the connecting port of the air inlet cover is correspondingly connected to the air inlet of the blower body.
[0014] The air inlet hood provided by the utility model is applied to a blower. During use, on the one hand, the side panels and the rear cover panel provided with ventilation holes are sieve-shaped, which can filter and block the airflow passing through the ventilation holes, thereby reducing impurities contained in the airflow entering the blower body, thereby ensuring smooth air supply in the air duct in the blower and normal operation of the motor, thereby extending the service life of the blower body.
[0015] On the other hand, the rearward extension of the side panels can increase the overall outer wall area of the cover body, so that the total ventilation area of the ventilation holes on the side panels and the rear cover plate is larger than the area of the connecting port and the air inlet. When the operating power of the blower body is constant, not only can its ventilation volume be ensured, but also the baffle area close to the connecting port is not provided with ventilation holes, and the ventilation holes are provided on the side panels and the rear cover plate far from the connecting port. In this way, the flow rate of the airflow passing through the ventilation holes is relatively small, which can reduce the blockage of the ventilation holes caused by impurities mixed in the airflow, thereby ensuring the ventilation area of the air inlet hood and extending the service life of the air inlet hood, thereby ensuring the air volume of the blower and extending its service life.
[0016] On the other hand, the side panel extends backward for a long length, and the airflow entering the cover body flows from back to front toward the front cover plate under the suction action of the air inlet. Part of the airflow flows directly into the blower body through the connecting port and the air inlet, and the other part of the airflow collides with the baffle area of the front cover plate. Impurities mixed in the airflow can settle downward, and the airflow flows to the connecting port under the guidance of the baffle area and enters the blower body through it, thereby further improving the cleanliness of the airflow entering the blower body and reducing damage to the blower body caused by clogging of impurities, thereby further ensuring the service life of the blower. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 A front cross-sectional view of the air inlet hood provided in an embodiment of the utility model;
[0019] Figure 2 A rear view of the air inlet hood provided in an embodiment of the utility model.
[0020] Description of reference numerals:
[0021] 10-air inlet connector; 100-hood; 110-front cover plate; 111-connection port; 112-blocking area; 120-side panel; 130-rear cover plate; 140-ventilation hole; 150-connection connector; 200-skirt; 300-ventilation gap. DETAILED DESCRIPTION
[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.
[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] This embodiment provides an air inlet cover, such as Figure 1 As shown, the cover body 100 includes an annular side panel 120, a front cover plate 110 covering the front end of the side panel 120 and a rear cover plate 130 covering the rear end of the side panel 120, the front cover plate 110 includes a connecting area and a barrier area 112, the connecting area is provided with a connecting port 111, and the barrier area 112 is a closed plate body; the side panel 120 and the rear cover plate 130 are both provided with a plurality of dispersed ventilation holes 140, and the total ventilation area of each ventilation hole 140 is greater than the ventilation area of the connecting port 111.
[0026] This embodiment further provides a blower, including a blower body and the above-mentioned air inlet cover, wherein the connecting port 111 of the air inlet cover is correspondingly connected to the air inlet of the blower body.
[0027] When the air inlet hood provided in the present embodiment is applied to a blower, the connection port 111 of the front cover plate 110 of the cover body 100 matches the size of the air inlet of the blower body and is correspondingly connected, the radial size of the front cover plate 110 is larger than the connection port 111 and the air inlet, and a baffle area 112 different from the connection port 111 is arranged around the connection port 111 and is an airtight closed plate; the side panels 120 and the rear cover plate 130 of the cover body 100 extend backward relative to the front cover plate 110 to lengthen the extension length of the cover body 100, thereby increasing the outer wall area of the cover body 100, and a plurality of dispersed ventilation holes 140 are provided on the side panels 120 and the rear cover plate 130, and it is ensured that the ventilation area of all ventilation holes 140 is larger than the ventilation area of the connection port 111.
[0028] When the blower is running, negative pressure is formed at its air inlet. Under the suction effect of the air inlet, external air enters the cover body 100 through the ventilation hole 140 and flows toward the connection port 111, and then flows into the blower body through the connection port 111 and the air inlet, completing the blowing operation of the blower.
[0029] During use, on the one hand, the side panels 120 and the rear cover panel 130 provided with the ventilation holes 140 are sieve-shaped, which can filter and block the airflow passing through the ventilation holes 140, thereby reducing impurities mixed in the airflow entering the blower body, and correspondingly ensuring the smooth air supply of the air duct in the blower and the normal operation of the motor, thereby extending the service life of the blower body.
[0030] On the other hand, the rearward extension of the side panels 120 can increase the overall outer wall area of the cover body 100, so that the total ventilation area of the ventilation holes 140 on the side panels 120 and the rear cover panel 130 is larger than the area of the connecting port 111 and the air inlet. When the operating power of the blower body is constant, not only can its ventilation volume be ensured, but the baffle area 112 close to the connecting port 111 is not provided with ventilation holes 140, and the ventilation holes 140 are provided on the side panels 120 and the rear cover panel 130 far from the connecting port 111. Then, the flow rate of the airflow passing through the ventilation holes 140 is relatively small, which can reduce the blockage of the ventilation holes 140 caused by impurities mixed in the airflow, thereby ensuring the ventilation area of the air inlet hood and extending the service life of the air inlet hood, thereby ensuring the air volume of the blower and extending its service life.
[0031] On the other hand, the side panel 120 extends backward for a long length, and the airflow entering the cover body 100 flows from back to front to the front cover plate 110 under the suction action of the air inlet. Part of the airflow directly flows into the blower body through the connecting port 111 and the air inlet, and the other part of the airflow collides with the baffle area 112 of the front cover plate 110. Impurities mixed in the airflow can settle downward, and the airflow flows to the connecting port 111 under the guidance of the baffle area 112 and enters the blower body through it, thereby further improving the cleanliness of the airflow entering the blower body, reducing damage to the blower body caused by clogging of impurities, and correspondingly further ensuring the service life of the blower.
[0032] In this embodiment, Figure 1 As shown, ventilation holes 140 are distributed throughout the side panels 120 and the rear cover panel 130 to ensure that the total ventilation area of the ventilation holes 140 is large. Specifically, the total ventilation area of each ventilation hole 140 is more than twice the ventilation area of the connecting port 111 to reduce the effect of the smaller total ventilation area of the ventilation holes 140 on the ventilation volume of the connecting port 111, thereby ensuring the air volume of the blower.
[0033] Specifically, in this embodiment, the axial extension length of the side panel 120 is not less than 350 mm; the aperture of the ventilation hole 140 is 2 mm to 3 mm.
[0034] Preferably, in this embodiment, the connection port 111 is located in the upper area of the front cover plate 110. Most of the area of the baffle area 112 is located below the connection port 111. After the airflow entering the cover body 100 collides with the baffle area 112, the impurities contained therein can avoid the connection port 111 and settle downward, thereby reducing the occurrence of the situation where the settled impurities are brought into the blower body again by the airflow through the connection port 111 during the descending process.
[0035] Optionally, in this embodiment, if Figure 1As shown, the rear cover plate 130 is tilted from top to bottom toward the front cover plate 110. During use, the blower as a whole is in a vibrating state, and impurities blocked in the ventilation holes 140 can be shaken off under the action of vibration, and the shaken-off dust will not cause secondary blockage of the ventilation holes 140 in other areas, thereby improving the self-cleaning effect of the rear cover plate 130 and the air inlet cover, and correspondingly further ensuring its ventilation effect and extending its service life.
[0036] In this embodiment, Figure 1 and Figure 2 As shown, the front cover plate 110 is surrounded by an annular skirt 200, the side panels 120 and the rear cover plate 130 are both accommodated in the skirt 200, and there is a ventilation gap 300 between the skirt 200 and the side panels 120. The axial length of the skirt 200 is greater than the total axial length of the side panels 120 and the rear cover plate 130, so the skirt 200 can surround the side panels 120 and the rear cover plate 130 as a whole on the outside, thereby effectively reducing the external impurities falling on the side panels 120 and the rear cover plate 130 and blocking the ventilation holes 140 thereon, and correspondingly further ensuring the ventilation volume of the air inlet hood and its service life; wherein, the setting of the ventilation gap 300 can ensure the effective air intake of all ventilation holes 140.
[0037] Specifically, the length of the skirt 200 extending axially from the rear cover plate 130 is 80 mm to 100 mm, so as to ensure that the skirt 200 effectively shields the side panels 120 and the rear cover plate 130 from dust.
[0038] In this embodiment, Figure 1 As shown, the skirt 200 is in a flared cone shape from the front cover plate 110 to the rear cover plate 130. On the one hand, the radial ventilation gap 300 between the rear end of the skirt 200 and the side panels 120 and the rear cover plate 130 is enlarged, which can ensure the ventilation volume of the ventilation gap 300, and correspondingly ensure the effective air intake of each ventilation hole 140 and the blowing volume of the blower body; on the other hand, the skirt 200 is inclined toward its axis from the back to the front, and the operation of the blower drives the skirt 200 to vibrate. The dust falling on the skirt 200 can automatically slide down under the vibration and the inclined guiding effect of the skirt 200 and shake off from the front end, thereby improving the self-cleaning effect of the skirt 200 and reducing the amount of dust settled on the skirt 200.
[0039] Specifically, the angle between the skirt 200 and the side panel 120 is in the range of 20° to 30°.
[0040] Optionally, in this embodiment, the air inlet cover can be integrally cast from an aluminum alloy material to have the characteristics of light weight, corrosion resistance, and convenient processing. The aluminum alloy can be specifically 6005 grade, and the composition meets the requirements of GB / T3190-2020.
[0041] In this embodiment, Figure 1As shown, the front end of the connection port 111 may also be extended with a connection joint 150, and the connection joint 150 is connected to the air inlet joint 10 or the connecting pipe of the air inlet, so as to improve the connection convenience and air tightness between the air inlet cover and the blower body. Specifically, when the blower body is connected to the connection joint 150 using the air inlet joint 10, the inner diameter of the connection joint 150 has a tolerance of (+0.2, +0) mm, and the outer diameter of the outer wall of the air outlet has a tolerance of (+0, -0.2) mm, and they are connected and fastened by bolts.
[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An air inlet hood, characterized in that: The invention comprises a cover body (100), wherein the cover body (100) comprises an annular side panel (120), a front cover plate (110) covering the front end of the side panel (120), and a rear cover plate (130) covering the rear end of the side panel (120), wherein the front cover plate (110) comprises a connection area and a baffle area (112), wherein the connection area is provided with a connection port (111), and the baffle area (112) is a closed plate body; the side panel (120) and the rear cover plate (130) are both provided with a plurality of dispersedly arranged ventilation holes (140), and the total ventilation area of each ventilation hole (140) is greater than the ventilation area of the connection port (111).
2. The air inlet cover according to claim 1, characterized in that: The total ventilation area of each of the ventilation holes (140) is more than twice the ventilation area of the connection port (111).
3. The air inlet cover according to claim 1, characterized in that: The axial extension length of the side panel (120) is not less than 350 mm.
4. The air inlet cover according to claim 1, characterized in that: The connection port (111) is located in the upper area of the front cover plate (110).
5. The air inlet cover according to any one of claims 1 to 4, characterized in that: The rear cover plate (130) is arranged to be inclined from top to bottom toward the front cover plate (110).
6. The air inlet cover according to any one of claims 1 to 4, characterized in that: The front cover plate (110) is surrounded by an annular skirt (200), the side panels (120) and the rear cover plate (130) are both accommodated in the skirt (200), and a ventilation gap (300) exists between the skirt (200) and the side panels (120).
7. The air inlet cover according to claim 6, characterized in that: The length of the skirt (200) extending axially from the rear cover plate (130) is 80 mm to 100 mm.
8. The air inlet cover according to claim 6, characterized in that: In a direction from the front cover plate (110) to the rear cover plate (130), the skirt (200) is in a flared cone shape.
9. The air inlet cover according to claim 8, characterized in that: The included angle between the skirt (200) and the side panel (120) is in the range of 20° to 30°.
10. A blower, characterized in that: It comprises a blower body and an air inlet hood as claimed in any one of claims 1 to 9, wherein a connection port (111) of the air inlet hood corresponds to an air inlet of the blower body.