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CN-224230280-U - Air outlet device

CN224230280UCN 224230280 UCN224230280 UCN 224230280UCN-224230280-U

Abstract

The utility model discloses an air outlet device, which relates to the technical field of air exhaust and comprises a shell, a first rectifying plate and a second rectifying plate, wherein the first rectifying plate and the second rectifying plate are arranged in the shell and divide the inner space of the shell into a first rectifying cavity, a second rectifying cavity and a third rectifying cavity, an air inlet communicated with the first rectifying cavity is formed in the shell, a plurality of air outlet holes communicated with the third rectifying cavity are formed in the shell, at least two diversion parts are arranged in the first rectifying cavity and are respectively arranged on two sides of the air inlet, the diversion parts are used for guiding air entering at the air inlet position to other positions of the first rectifying cavity, a plurality of first air inlet through holes are formed in the first rectifying plate and are used for communicating the first rectifying cavity with the second rectifying cavity, and a plurality of second air inlet through holes are formed in the second rectifying plate and are used for communicating the second rectifying cavity with the third rectifying cavity. The utility model can make the air flow input from the air inlet output evenly and stably.

Inventors

  • QU XIANGDONG
  • CUI XIAOHUA
  • YUAN LIJUN

Assignees

  • 浙江科恩实验设备股份有限公司

Dates

Publication Date
20260512
Application Date
20250606

Claims (10)

  1. 1. The air outlet device is characterized by comprising a shell, a first rectifying plate (20) and a second rectifying plate (30), wherein the first rectifying plate (20) and the second rectifying plate (30) are arranged in the shell, and the inner space of the shell is divided into a first rectifying cavity, a second rectifying cavity and a third rectifying cavity; the shell is provided with an air inlet (101) communicated with the first rectification cavity, and is also provided with a plurality of air outlet holes (111) communicated with the third rectification cavity; The first rectification cavity is provided with at least two flow guide parts (40), the at least two flow guide parts (40) are respectively arranged at two sides of the air inlet (101), and the flow guide parts (40) are used for guiding the air entering at the position of the air inlet (101) to the first rectification cavity; A plurality of first air inlet through holes (201) are formed in the first rectifying plate (20) so as to communicate the first rectifying cavity with the second rectifying cavity; A plurality of second air inlet through holes (301) are formed in the second rectifying plate (30) so as to enable the second rectifying cavity to be communicated with the third rectifying cavity.
  2. 2. The air outlet device according to claim 1, wherein the flow guiding portion (40) is disposed on an inner wall of the first rectifying cavity on a side where the air inlet (101) is disposed, a flow guiding channel (44) is formed between the flow guiding portion (40) and the inner wall of the first rectifying cavity, one end of the flow guiding channel (44) is communicated with the air inlet (101), the other end of the flow guiding channel (44) is open, a plurality of third air inlet through holes (401) are formed in a channel wall of the flow guiding channel (44) so as to communicate the flow guiding channel (44) with the first rectifying cavity, and a gap exists between one ends of the flow guiding channels (44) of the at least two flow guiding portions (40) facing the air inlet (101) so as to allow partial air entering from the air inlet (101) to pass through.
  3. 3. The air outlet device according to claim 2, wherein the flow guiding portion (40) comprises a flow guiding surface (42) and a rectifying surface (41) which are connected with each other, the flow guiding surface (42) faces the air inlet (101), the rectifying surface (41) faces the first rectifying plate (20), the flow guiding surface (42) and the axial cross section of the air inlet (101) form an included angle, the rectifying surface (41) is perpendicular to the axial cross section of the air inlet (101), the third air inlet through hole (401) is formed in the rectifying surface (41), side plates (43) are arranged on two sides of the rectifying surface (41) along the width direction of the flow guiding channel (44), and the side plates (43) are connected with the inner wall of the first rectifying cavity.
  4. 4. The air outlet device according to claim 2, wherein the first rectifying plate (20) is perpendicular to the axis of the air inlet (101), the first rectifying plate (20) is divided into a first region (22) and a second region (23) surrounding the first region (22), the first region (22) corresponds to the air inlet (101), and the aperture of the first air inlet through hole (201) in the first region (22) is smaller than the aperture of the first air inlet through hole (201) in the second region (23).
  5. 5. The air outlet device according to claim 4, wherein the distribution density of the first air inlet holes (201) in the first area (22) is greater than the distribution density of the first air inlet holes (201) in the second area (23).
  6. 6. The air outlet device according to claim 4, wherein the second rectifying plate (30) is perpendicular to the axis of the air inlet (101), the second rectifying plate (30) is divided into a third area and two fourth areas respectively located at two sides of the third area, and a groove (302) extending along the length direction of the second rectifying plate (30) is concavely formed on the surface of one side of the third area facing the air inlet (101).
  7. 7. The air outlet device according to claim 6, wherein the groove (302) has a V-shaped cross section, and an included angle between two side walls of the groove (302) is an obtuse angle.
  8. 8. The air outlet device according to any one of claims 1-7, wherein the housing comprises a top plate and a bottom plate which are oppositely arranged, a frame connected between the top plate and the bottom plate, a space between the top plate and the first rectifying plate (20) is the first rectifying cavity, a space between the first rectifying plate (20) and the second rectifying plate (30) is the second rectifying cavity, a space between the second rectifying plate (30) and the bottom plate is the third rectifying cavity, the air inlet (101) is formed on the top plate, the air outlet hole (111) is formed on the bottom plate, a hanging ring structure (60) for being fixedly connected with a wall is arranged on the top plate, and a hanging lug structure (70) for being fixedly connected with the wall is arranged on the frame.
  9. 9. The air outlet device according to claim 8, wherein the inner side wall of the frame is provided with a first joint edge (21) and a second joint edge (31) which are arranged around the inner side of the frame, the first joint edge (21) is in fit joint with the first rectifying plate (20), the second joint edge (31) is in fit joint with the second rectifying plate (30), and a plurality of through holes are formed in the first joint edge (21) and the second joint edge (31).
  10. 10. The air outlet device according to claim 8, further comprising a light strip (80), wherein the light strip (80) is disposed in the third rectifying cavity, the light strip (80) is disposed around an inner wall of the frame, and the bottom plate is made of a light-transmitting material.

Description

Air outlet device Technical Field The utility model relates to the technical field of exhaust equipment, in particular to an air outlet device. Background Laboratory is usually equipped with equipment such as gas hood, fume hood and is used for in time getting rid of harmful gas, ensures personnel's safety, but these equipment often reduce work efficiency because of new trend system air current interference, even lead to harmful gas to leak. Disclosure of utility model The present utility model aims to solve one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an air outlet device. In order to achieve the aim, the air outlet device comprises a shell, a first rectifying plate and a second rectifying plate, wherein the first rectifying plate and the second rectifying plate are arranged in the shell, and the inner space of the shell is divided into a first rectifying cavity, a second rectifying cavity and a third rectifying cavity; The shell is provided with an air inlet communicated with the first rectification cavity, and is also provided with a plurality of air outlet holes communicated with the third rectification cavity; The first rectification cavity is provided with at least two flow guide parts, the at least two flow guide parts are respectively arranged at two sides of the air inlet, and the flow guide parts are used for guiding the air entering from the position of the air inlet to other positions of the first rectification cavity; The first rectifying plate is provided with a plurality of first air inlet through holes so as to communicate the first rectifying cavity with the second rectifying cavity; And a plurality of second air inlet through holes are formed in the second rectifying plate so as to communicate the second rectifying cavity with the third rectifying cavity. The device has the advantages that the device adopts the flow guide part, the first rectifying plate, the second rectifying plate and the plurality of air outlet holes to rectify the air input by the air inlet, so that the air input by the air inlet can be uniformly and stably output to the laboratory space, and the interference of the air flow of the fresh air system in the laboratory to the air exhaust system is avoided. Optionally, the flow guiding part is arranged on the inner wall of the first rectifying cavity at one side where the air inlet is arranged, a flow guiding channel is formed between the flow guiding part and the inner wall of the first rectifying cavity, one end of the flow guiding channel is communicated with the air inlet, the other end of the flow guiding channel is open, a plurality of third air inlet through holes are arranged on the channel wall of the flow guiding channel so as to communicate the flow guiding channel with the first rectifying cavity, and a gap exists between one end, facing the air inlet, of the flow guiding channels of at least two flow guiding parts so as to allow partial gas entering from the air inlet to pass through. Optionally, the flow guiding part comprises a flow guiding surface and a rectifying surface which are connected with each other, the flow guiding surface faces the air inlet, the rectifying surface faces the first rectifying plate, the flow guiding surface and the axial section of the air inlet form an included angle, the rectifying surface is perpendicular to the axial section of the air inlet, the third air inlet through hole is formed in the rectifying surface, the rectifying surface is provided with side plates along two sides of the width direction of the flow guiding channel, and the side plates are connected with the inner wall of the first rectifying cavity. Optionally, the first rectifying plate is perpendicular to the axis of the air inlet, the first rectifying plate is divided into a first area and a second area surrounding the first area, the first area corresponds to the air inlet, and the aperture of the first air inlet through hole in the first area is smaller than that of the first air inlet through hole in the second area. Optionally, the distribution density of the first air inlet holes in the first area is greater than the distribution density of the first air inlet holes in the second area. Optionally, the second rectifying plate is perpendicular to the axis of the air inlet, the second rectifying plate is divided into a third area and two fourth areas respectively located at two sides of the third area, and a groove extending along the length direction of the second rectifying plate is concavely formed on the surface of one side of the third area, facing the air inlet. Optionally, the groove has a V-shaped cross section, and an included angle between two side walls of the groove is an obtuse angle. Optionally, the shell comprises a top plate, a bottom plate, a frame, a hanging ring structure and a hanging lug structure, wherein the top plate and the bottom plate are oppositely arranged, the frame