Fresh air inducing nozzle

Abstract

The utility model discloses a fresh air inducing nozzle, and belongs to the technical field of air conditioners. Comprising a main cylinder body composed of a contraction part and a flow guide part; a drainage part is formed on the outer wall of the main cylinder body, one end of the drainage part is connected to the outer wall of the flow guide part, one end of the drainage part is open, a drainage channel is formed between the drainage part and the outer wall of the flow guide part, and a plurality of drainage holes communicated with the drainage channel are formed in the flow guide part. The fresh air inducing nozzle has the beneficial effect that the jet flow rate and the flow speed of an outlet of the nozzle are increased.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a fresh air induction nozzle. Background Art

[0002] For large spans and tall spaces, existing air supply equipment usually uses spherical nozzles and cylindrical nozzles. This type of nozzle only uses the jet principle at the outlet to induce the surrounding air into the jet area. This results in slow exchange of mass and momentum between the jet and the surrounding medium, and slow flow rate at the nozzle outlet.

[0003] There is no fresh air induction nozzle that increases the nozzle outlet flow rate. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a fresh air induction nozzle, including: a main cylinder body, composed of a contraction part and a guide part;

[0006] A drainage part is formed on the outer wall of the main cylinder, one end of the drainage part is connected to the outer wall of the guide part, one end of the drainage part is open, and a drainage channel is formed between the drainage part and the outer wall of the guide part, and a plurality of drainage holes connected to the drainage channel are opened on the guide part.

[0007] The present application realizes the primary drainage of the nozzle by providing a plurality of drainage holes on the guide part in cooperation with the drainage part, so that the flow rate at the nozzle outlet is increased, thereby increasing the flow rate at the nozzle outlet. The increase in flow rate will strengthen the transverse pulsation of turbulence, causing the jet to continuously exchange mass and momentum with the surrounding medium, driving the flow of surrounding air, and increasing the mass and flow cross-section of the jet along the nozzle outflow direction.

[0008] Furthermore, the drainage hole is arranged obliquely.

[0009] Further, the guide part includes:

[0010] A throat portion, fixedly connected to one end of the contraction portion;

[0011] An expansion portion fixedly connected to one end of the throat;

[0012] The drainage hole is arranged on the throat, and one end of the drainage part is connected to the outer wall of the throat.

[0013] Furthermore, the cross-sectional area of ​​the expansion portion gradually increases from one end to the other end.

[0014] Furthermore, the cross-sectional area of ​​the drainage portion gradually increases from one end close to the drainage portion to the other end.

[0015] Furthermore, the cross-sectional area of ​​the contraction portion gradually decreases from one end to the other end.

[0016] Furthermore, one end of the contraction portion is fixedly connected to a flange for connecting to an external device.

[0017] Furthermore, the cross-sections of the main cylinder and the drainage portion are circular or polygonal.

[0018] The beneficial effect of the present application is that it provides a fresh air induction nozzle that increases the jet flow rate and flow velocity at the nozzle outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0020] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0021] In the attached picture:

[0022] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0023] Figure 2 is a cross-sectional view of an embodiment;

[0024] Figure 3 yes Figure 2 Enlarged view of part A.

[0025] Reference numerals:

[0026] 1. Main cylinder; 2. Contraction part; 3. Air inlet; 4. Air outlet; 5. Drainage part; 6. Drainage channel; 7. Drainage hole; 8. Throat; 9. Expansion part; 10. Flange. DETAILED DESCRIPTION

[0027] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0028] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0029] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0030] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0031] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] Reference Figure 1-3 The fresh air induction nozzle comprises a main cylinder 1, which is composed of a contraction part 2 and a guide part. The contraction part 2 has an air inlet 3 at one end, and the guide part has an air outlet 4 at one end. A guide part 5 is formed on the outer wall of the main cylinder 1, one end of the guide part 5 is connected to the outer wall of the guide part, and one end of the guide part 5 is open.

[0033] Specifically, a drainage channel 6 is formed between the drainage part 5 and the outer wall of the drainage part, and a plurality of drainage holes 7 connected to the drainage channel 6 are provided on the drainage part, and the drainage holes 7 are inclined. By providing a plurality of drainage holes 7 on the drainage part in coordination with the drainage part 5, a primary drainage of the nozzle is achieved, so that the flow rate at the nozzle outlet is increased, thereby increasing the nozzle outlet flow rate. The increase in flow rate will strengthen the transverse pulsation of the turbulent flow, causing the jet to continuously exchange mass and momentum with the surrounding medium, driving the flow of the surrounding air, and increasing the mass and flow rate of the jet along the nozzle outlet direction. When the airflow enters the drainage part from the air inlet 3, the airflow velocity increases, and the pressure in the drainage part will be further reduced. At this time, the static pressure value of the drainage part is less than 0Pa, that is, the pressure of the drainage part is less than the ambient atmospheric pressure. At this time, a pressure difference △P is formed between the drainage part and the environment. The wind speed υ of the drainage hole is obtained according to the internal and external pressure difference △P of the drainage part, that is, A pressure difference △P is formed between the guide part and the environment, which allows the external airflow to enter the throat 8 from the guide channel 6 through the guide hole 7, thereby increasing the flow rate of the nozzle. Assuming that the sum of the cross-sectional areas of all the guide holes 7 is A, the air volume Q1 entering the throat through the guide hole 7 can be calculated, that is,

[0034] The cross-sectional area of ​​the contraction portion 2 gradually decreases from one end to the other end. According to the law of mass conservation, the velocity of the airflow will increase; at the same time, according to Bernoulli's theorem, the pressure of the contraction portion 2 will gradually decrease.

[0035] The flow guide portion includes a throat portion 8 and an expansion portion 9; the throat portion 8 is fixedly connected to one end of the contraction portion 2, and the expansion portion 9 is fixedly connected to one end of the throat portion 8; the drainage hole 7 is opened on the throat portion 8, and one end of the drainage portion 5 is connected to the outer wall of the throat portion 8. Among them, the cross-sectional area of ​​the expansion portion 9 gradually increases from one end to the other end.

[0036] The cross-sectional area of ​​the drainage portion 5 gradually increases from one end close to the drainage portion to the other end.

[0037] One end of the contraction portion 2 is fixedly connected to a flange 10 for connecting to an external device.

[0038] The cross sections of the main cylinder 1 and the drainage portion 5 are circular or polygonal.

[0039] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A fresh air induction nozzle, characterized in that: include: The main cylinder is composed of a contraction part and a flow guide part; A drainage portion is formed on the outer wall of the main cylinder, one end of the drainage portion is connected to the outer wall of the guide portion, one end of the drainage portion is open, and a drainage channel is formed between the drainage portion and the outer wall of the guide portion, and a plurality of drainage holes connected to the drainage channel are opened on the guide portion.

2. The fresh air induction nozzle according to claim 1, characterized in that: The drainage holes are arranged obliquely.

3. The fresh air induction nozzle according to claim 1, characterized in that: The guide portion comprises: A throat portion, fixedly connected to one end of the contraction portion; An expansion portion fixedly connected to one end of the throat portion; The drainage hole is opened on the throat, and one end of the drainage part is connected to the outer wall of the throat.

4. The fresh air induction nozzle according to claim 3, characterized in that: The cross-sectional area of ​​the expansion portion gradually increases from one end to the other end.

5. The fresh air induction nozzle according to claim 1, characterized in that: The cross-sectional area of ​​the drainage portion gradually increases from one end close to the drainage portion to the other end.

6. The fresh air induction nozzle according to claim 1, characterized in that: The cross-sectional area of ​​the contraction portion gradually decreases from one end to the other end.

7. The fresh air induction nozzle according to claim 1, characterized in that: One end of the contraction portion is fixedly connected with a flange for connecting to an external device.

8. The fresh air induction nozzle according to claim 1, characterized in that: The cross sections of the main cylinder and the drainage portion are circular or polygonal.

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