Non-inductive air supply assembly of fresh air system

Abstract

The utility model discloses a non-inductive air supply assembly of a fresh air system, which relates to the technical field of air supply of the fresh air system and comprises a pipe body, a baffle is arranged at the bottom of the pipe body in parallel, a partition plate is arranged between the baffle and the pipe body, through holes are formed in the surface of the baffle in an array mode, and a connecting frame covering the through holes is arranged at the bottom of the baffle. A grating plate is arranged on the inner wall of the connecting frame, when airflow in the pipe body makes contact with the baffle, part of the airflow penetrates through the baffle through the penetrating holes, and the other part of the airflow is blocked by the baffle and discharged outwards in the direction of the partition plate under pushing of follow-up airflow, so that the airflow discharged out of the pipe body is decelerated by the baffle and divided. The airflow penetrating through the baffle through the penetrating holes makes contact with the grating plate, the flowing direction is changed under the influence of the inclined face of the grating plate, the speed is reduced again, people located indoors cannot visually feel the wind feeling, the airflow radiation area in the flowing direction is changed through the grating plate, the overall indoor temperature can be rapidly changed, and the indoor temperature is increased. The temperature difference of different indoor areas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air supply of a fresh air system, in particular to a sensorless air supply component of a fresh air system. Background Art

[0002] The fresh air system is a device used to improve indoor air quality. It achieves indoor and outdoor air exchange by introducing fresh air from outdoors and expelling polluted air from indoors. The main functions of the fresh air system include ventilation, air filtration, and temperature and humidity regulation.

[0003] During use, the fresh air system will send outdoor air into the room and discharge it through the exhaust vents. Therefore, the temperature of the air discharged from the exhaust vents is different from the indoor air temperature. The airflow discharged from the exhaust vents generally has a certain speed, which produces a wind feeling within a certain range. Indoor people will always feel the discomfort caused by the obvious temperature difference in the wind feeling area. In addition, the exhaust vents are mostly set on the roof. After the airflow is discharged outward, it cannot be quickly distributed in the overall indoor environment, which easily causes a certain temperature difference between different areas in the room. Utility Model Content

[0004] In order to make up for the deficiencies of the existing technical problems, the purpose of the present utility model is to solve the problems existing in the existing technology: the airflow discharged outwards from the exhaust port directly contacts the indoor people, which will cause a large temperature difference in the physical sensation of the indoor people; the airflow discharged outwards from the exhaust port is too uniform, which will produce a wind feeling within a certain range, and the indoor people will also feel uncomfortable because of the wind feeling.

[0005] In order to solve the problems of the existing technology, the technical solution of the utility model is as follows: it includes a tube body, a horizontal extension part is provided at the bottom of the tube body, a baffle is provided parallel to the bottom of the tube body, a partition is provided between the baffle and the horizontal extension part of the tube body, an array of perforations is provided on the surface of the baffle, a connecting frame covering the perforations is provided at the bottom of the baffle, and a grille plate is provided on the inner wall of the connecting frame.

[0006] Furthermore, the partitions between the baffle and the horizontally extending portion at the bottom of the tube body are evenly distributed along the horizontally extending portion, and a gap is left between every two partitions, so that part of the air in contact with the baffle is diverted and discharged outward through the partition, the flow rate of the diverted airflow is reduced and it is discharged in a horizontal direction to increase the flow area of ​​the airflow.

[0007] Furthermore, a depression with a depth of half the baffle thickness is provided on one side of the baffle close to the tube body. The area of ​​the depression is adapted to the inner diameter of the tube body, thereby increasing the space volume between the baffle and the tube body, allowing the airflow to have more flow space and reducing the airflow speed.

[0008] Furthermore, the through hole is opened in the recess of the baffle.

[0009] Furthermore, the grille plate includes a cross-shaped frame connected to the connection frame, and rectangular grilles arranged in sequence from the inside to the outside. The cross-shaped frame can provide support for the rectangular grilles and reduce its own area without blocking the normal passage of airflow.

[0010] Furthermore, the edges of each rectangular grid plate of the grid plate are arranged to be radially inclined outward from the center point of the cross, and a gap is left between each rectangular grid plate and the rectangular grid plates on the inner and outer sides, so that part of the airflow passing through the grid plate is affected by the inclined surface and changes its moving direction, thereby increasing the flow area of ​​the airflow and reducing the airflow velocity.

[0011] Compared with the prior art, the advantages of the present invention are as follows:

[0012] The utility model sets a baffle with perforations on the surface at the bottom of the pipe. When the airflow in the pipe body contacts the baffle, a part of the airflow passes through the baffle through the perforations, and the other part is blocked by the baffle and discharged outward along the partition direction under the push of the subsequent airflow, so that the airflow discharged from the pipe body is slowed down and diverted by the baffle. The airflow directly discharged through the partition has a higher flow rate than the airflow passing through the baffle. However, the pipe of the fresh air system is usually set at the roof part of the room and will not directly contact the indoor people and will also drive the indoor air flow, optimizing the air supply effect. The airflow passing through the baffle through the perforations contacts the grille plate and is affected by the inclined surface of the grille plate to change the flow direction and slow down again. The airflow with changed flow direction increases the contact range with the indoor air and has a low flow rate itself. It is difficult for people in the room to intuitively feel the wind. In addition, the radiation area of ​​the airflow with the flow direction changed by the grille plate is increased, which can quickly change the overall indoor temperature and reduce the temperature difference between different areas in the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the decomposition of the baffle structure of the present invention.

[0015] Figure 3 This is a schematic cross-sectional view of the grid plate of the present invention.

[0016] Figure numerals: 1, tube body; 2, baffle; 3, partition; 4, perforation; 5, connecting frame; 6, grille plate. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] like Figure 1-3 As shown, a non-sensing air supply component of a fresh air system includes a pipe body 1, a horizontally extending portion is provided at the bottom of the pipe body 1, a baffle 2 is provided parallel to the bottom of the pipe body 1, and a depression with a depth of half the thickness of the baffle 2 is provided on the side of the baffle 2 close to the pipe body 1. The area of ​​the depression is adapted to the inner diameter of the pipe body 1, thereby increasing the volume of the space between the baffle 2 and the pipe body 1, allowing more flow space for airflow and reducing the airflow speed;

[0019] A partition 3 is provided between the baffle 2 and the horizontally extending portion of the tube body 1. The partitions 3 between the baffle 2 and the horizontally extending portion at the bottom of the tube body 1 are evenly distributed along the horizontally extending portion. A gap is left between every two partitions 3, so that part of the air in contact with the baffle 2 is diverted and discharged outward through the partition 3. The diverted airflow has a reduced flow rate and is discharged horizontally to increase the flow area of ​​the airflow. The surface of the baffle 2 is provided with an array of perforations 4, which are provided in the recess of the baffle 2.

[0020] A connecting frame 5 covering the perforation 4 is provided at the bottom of the baffle 2, and a grille plate 6 is provided on the inner wall of the connecting frame 5. The grille plate 6 includes a cross frame connected to the connecting frame 5, and rectangular grilles arranged in sequence from the inside to the outside. The cross frame can provide support for the rectangular grilles and reduce its own area without blocking the normal passage of airflow. The edges of each rectangular grille of the grille plate 6 are radially inclined outward from the center point of the cross, and a gap is left between each rectangular grille and the rectangular grilles on the inner and outer sides, so that part of the airflow passing through the grille plate 6 changes its moving direction due to the influence of the inclined surface, thereby increasing the flow area of ​​the airflow and reducing the airflow velocity.

[0021] Working principle description: First, when the airflow in the tube body 1 contacts the baffle 2, part of the airflow passes through the baffle 2 through the perforation 4, and the other part is blocked by the baffle 2 and is discharged outward along the partition 3 under the push of the subsequent airflow, so that the airflow discharged from the tube body 1 is decelerated and diverted by the baffle 2, and then the airflow that passes through the baffle 2 through the perforation 4 contacts the grille plate 6, and is affected by the inclined surface of the grille plate 6 to change the flow direction and slow down again and spread in the indoor environment.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sensorless air supply component for a fresh air system, comprising a pipe body (1), characterized in that: The bottom of the tube body (1) is provided with a horizontal extension portion, a baffle (2) is provided parallel to the bottom of the tube body (1), a partition (3) is provided between the baffle (2) and the horizontal extension portion of the tube body (1), a perforation (4) is provided in an array on the surface of the baffle (2), a connecting frame (5) covering the perforations (4) is provided at the bottom of the baffle (2), and a grid plate (6) is provided on the inner wall of the connecting frame (5).

2. The sensorless air supply component of the fresh air system according to claim 1, characterized in that: The partitions (3) between the baffle (2) and the horizontally extending portion at the bottom of the tube body (1) are evenly distributed along the horizontally extending portion, with a gap left between every two partitions (3).

3. The sensorless air supply component of the fresh air system according to claim 1, characterized in that: A recess having a depth of half the thickness of the baffle (2) is provided on one side of the baffle (2) close to the tube body (1), and the area of ​​the recess is adapted to the inner diameter of the tube body (1).

4. The sensorless air supply component of the fresh air system according to claim 3, characterized in that: The perforation (4) is opened in the recess of the baffle (2).

5. The sensorless air supply component of the fresh air system according to claim 1, characterized in that: The grid plate (6) comprises a cross-shaped frame connected to the connection frame (5), and rectangular grid plates sequentially sleeved from the inside out.

6. The sensorless air supply component of the fresh air system according to claim 5, characterized in that: The sides of each rectangular grid plate of the grid plate (6) are arranged to be inclined radially outward from the center point of the cross, and a gap is left between each rectangular grid plate and the rectangular grid plates on both sides.

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