A new air outlet structure for reducing wind speed

Abstract

The utility model relates to a kind of new air outlet structure of reducing wind speed, it is used in the indoor air outlet of fresh air system, can reduce air outlet wind speed on the basis of not reducing air volume, make air out soft, avoid blowing to human body and cause discomfort.New fresh air from duct enters and blows from spherical crown seat center aperture, due to the obstruction of spherical crown top, blown air is blown from the gap between spherical crown top and spherical crown seat to all around, due to the gap between spherical crown top and spherical crown seat from center to all around is more and more big, according to Bernoulli's principle of fluid mechanics, when blown air flows from small gap, i.e. small flow section to big gap, i.e. big flow section, venturi effect is generated, air flow rate is more and more low, but flow is unchanged, so as to achieve the purpose of constant fresh air volume and reducing wind speed, make the air out of new air outlet more soft, avoid blowing to human body and cause discomfort.

Description

Technical Field

[0001] This utility model relates to the field of fresh air system technology, and in particular to a fresh air outlet structure for reducing air velocity. It is mainly used for indoor air outlets of fresh air systems and can reduce the air velocity at the outlet without reducing the air volume. Background Technology

[0002] As people pay more and more attention to health, fresh air systems are becoming more and more popular. Fresh air systems generally draw in fresh outdoor air and blow it into the room through fresh air outlets. In order to ensure air volume, the air velocity at the outlet of fresh air systems is relatively high, and the airflow is not gentle, which can cause discomfort to the human body. A fresh air outlet structure that reduces air velocity can reduce the air velocity at the outlet without reducing the air volume, thus avoiding discomfort caused by blowing air onto the human body. Utility Model Content

[0003] This utility model provides a fresh air outlet structure that reduces wind speed. It can be used in the indoor air outlet of a fresh air system to reduce the wind speed at the outlet without reducing the air volume, resulting in gentle airflow that avoids blowing directly on the human body and causing discomfort.

[0004] A fresh air outlet structure for reducing wind speed consists of a spherical crown top, a spherical crown base, and supporting columns. The spherical crown base has a central opening and is connected to a section of pipe. The spherical crown top and the spherical crown base are opposite each other, and the two are connected and fixed by three or more supporting columns with gaps between them.

[0005] The gap between the top of the spherical crown and the seat of the spherical crown gradually increases from the center to the periphery, that is, the cross-sectional area of ​​the airflow gradually increases along the path of airflow.

[0006] The generatrix of the gap section between the crown top and the crown seat includes, but is not limited to, one or more circular arcs, one or more straight lines, and curves.

[0007] The beneficial effect of this utility model is that it can reduce the wind speed at the air outlet of the fresh air system without reducing the air volume, thus avoiding blowing on the human body and causing discomfort. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0009] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0010] In the diagram: 1. Top of the spherical crown, 2. Seat of the spherical crown, 3. Support column. Detailed Implementation

[0011] exist Figure 1The system consists of a spherical crown top 1, a spherical crown base 2, and supporting columns 3. The arrows in the diagram indicate the airflow direction. A central opening in the spherical crown base 2 connects to a section of pipe. The spherical crown top 1 and the spherical crown base 2 are spherically opposite each other, connected and fixed by three or more supporting columns 3 with a gap between them. Fresh air from the fresh air unit enters through the pipe and exits through the central opening in the spherical crown base 2. Due to the obstruction of the spherical crown top 1, the air is blown outwards through the gap between the spherical crown top 1 and the spherical crown base 2. As the gap between the spherical crown top 1 and the spherical crown base 2 gradually increases from the center outwards, according to Bernoulli's principle in fluid mechanics, the airflow from the smaller gap (smaller cross-section) to the larger gap (larger cross-section) produces a Venturi effect, causing the air velocity to decrease while the flow rate remains constant. This achieves the goal of maintaining a constant fresh air volume while reducing the wind speed, resulting in a gentler airflow from the fresh air outlet that does not cause discomfort to the human body.

Claims

1. A fresh air outlet structure with reduced wind speed, characterized in that: It consists of a spherical crown top (1), a spherical crown seat (2), and a support column (3); the spherical crown seat (2) has a central hole and is connected to a section of pipe; the spherical crown top (1) and the spherical crown seat (2) are opposite each other; the two are connected and fixed by three or more support columns (3) with a gap.

2. The structure for a fresh air outlet with reduced wind speed according to claim 1, characterized in that: The gap between the top of the spherical crown (1) and the seat of the spherical crown (2) gradually increases from the center to the surrounding area, that is, the cross-sectional area of ​​the airflow gradually increases along the path of airflow.

3. The structure for a fresh air outlet with reduced wind speed according to claim 1, characterized in that: The gap section generatrix between the top of the spherical crown (1) and the seat of the spherical crown (2) includes, but is not limited to, a section or more of circular arcs, a section or more of straight lines and curves.

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