Window breaking blowing nozzle of violent fan and violent fan

Abstract

The utility model belongs to the technical field of small fans, and particularly relates to a window breaking blowing nozzle of a violent fan and the violent fan. The window breaking air blowing nozzle of the violent fan and the violent fan have the efficient air supply performance and the emergency escape function. The device comprises a fan body, an air blowing nozzle, a connecting part and a knocking piece, the air blowing nozzle is installed at an air outlet of the fan body through the connecting part, a plurality of ventilation holes communicated with the air outlet are formed in the air blowing nozzle in the circumferential direction, and the knocking piece is arranged at the end, away from the connecting part, of the air blowing nozzle. The air blowing nozzle is designed to be of a gradually-shrunk hollow cone structure, the influence that the effective air volume is reduced due to resistance increase caused by airflow separation of a porous air outlet structure can be reduced, the air supply efficiency of the air volume can be improved, and then the air pressure can be increased, and the air supply distance can be increased; and the knocking piece made of the tungsten steel material can be used as a safety hammer for breaking a window in emergency to be conveniently used, so that the safety in use is favorably improved.

Description

Technical Field

[0001] This utility model belongs to the field of small fan technology, specifically a window-breaking nozzle for a high-powered fan and a high-powered fan. Background Technology

[0002] Traditional high-powered fans often use straight or diffuser-type nozzles for their airflow, and their airflow pattern is usually achieved by using perforated plates or honeycomb openings to disperse the airflow.

[0003] For example, a utility model patent for a high-speed wireless handheld high-powered fan, published on the Chinese patent website (authorization announcement number CN221683238U, application date January 10, 2024), includes a handle and a spray nozzle. The nozzle is vertically mounted on the top of the handle. A battery and a PCBA board are installed inside the handle. The spray nozzle contains a turbine fan and baffles. Air inlets and ducts are located at the bottom and top of the handle, respectively. Airflow passes through the air inlets, over the surface of the battery and PCBA board, and then enters the spray nozzle through the duct. While this fan is compact and convenient due to its wireless design, its functionality is relatively limited, lacking both excellent airflow and emergency safety features. In the event of an emergency in a confined space (such as a vehicle or basement), the user lacks a reliable tool for quickly breaking windows and escaping, posing a certain safety hazard.

[0004] Therefore, there is an urgent need for a high-efficiency air delivery fan with emergency escape function, which can be used as a window-breaking nozzle and a high-efficiency fan. Utility Model Content

[0005] In order to overcome the limitations of existing fans which have relatively simple functions and certain limitations in practical use, the technical problem is to provide a window-breaking nozzle and a high-powered fan that combines efficient air delivery performance with emergency escape function.

[0006] A window-breaking nozzle for a violent fan includes a fan body, a nozzle, a connecting part, and a striking element. The nozzle is detachably installed at the air outlet of the fan body via the connecting part. The nozzle has multiple ventilation holes communicating with the air outlet along the circumference, and the ventilation holes are evenly spaced along the circumference. The striking element is provided at the end of the nozzle away from the connecting part.

[0007] Furthermore, the striking component includes an integrally formed cylinder and a cone, and the nozzle has a groove at one end away from the connecting part, with the cylinder embedded and fixedly installed in the groove.

[0008] Furthermore, the cone of the striking element extends axially from the edge of the groove in a direction away from the groove.

[0009] Furthermore, the intersection of the inner ends of each ventilation hole forms a flat-bottom structure.

[0010] Furthermore, the connecting part is a connector with external threads, which is threadedly connected to the internal threaded hole at the air outlet of the fan body.

[0011] The violent fan provided by this utility model uses the window-breaking nozzle of the violent fan as described in any of the above-mentioned embodiments.

[0012] The beneficial effects are as follows: The nozzle has a tapered hollow cone structure design, which can reduce the impact of the multi-hole air outlet structure on the increase of resistance caused by airflow separation, thus reducing the effective air volume. This is conducive to improving the air delivery efficiency and increasing the air pressure and delivery distance. The striking part made of tungsten steel can be used as a safety hammer to break windows in emergency situations, which is convenient and helps to improve the safety during use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the connection structure between the fan body and the nozzle of this utility model.

[0014] Figure 2 This is a schematic diagram of the connection structure between the fan body and the nozzle of this utility model from another perspective.

[0015] Figure 3 This is a structural separation diagram of the fan body and the blower nozzle of this utility model.

[0016] Figure 4 This is a three-dimensional structural diagram of the blower nozzle of this utility model.

[0017] Figure 5 This is a structural separation diagram of the blower nozzle and the striking component of this utility model.

[0018] The parts and their numbers in the diagram are: 1_Fan body, 2_Blow nozzle, 20_Connector, 21_Ventilation hole, 22_Groove, 23_Flat bottom structure, 3_Striking part. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model. The utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example: This utility model provides a window-breaking nozzle for a violent fan, such as... Figures 1 to 5As shown, the device includes a fan body 1, a nozzle 2, a connecting part 20, and a striking element 3. The nozzle 2 is installed at the air outlet of the fan body 1 through the connecting part 20. The fan body 1 is the existing high-powered fan. The nozzle 2 has six ventilation holes 21 connected to the air outlet along its circumference. The ventilation holes 21 are evenly spaced along the circumference. Each ventilation hole 21 has an elliptical structure design, which can force the airflow to accelerate and maintain a laminar flow state, thereby improving the blowing force of the airflow and achieving a strong blowing effect. The nozzle 2 has a striking element 3 at the end away from the connecting part 20. The striking element 3 includes an integrally formed cylinder and a cone. The nozzle 2 has a groove 22 at the end away from the connecting part 20. The cylinder is embedded and fixedly installed in the groove 22. The cylinder and the cone are made of tungsten steel, which is hard and can be used to knock on the glass of doors and windows in emergency situations to achieve the purpose of emergency escape.

[0021] like Figure 4 and Figure 5 As shown, the cone of the striking part 3 starts from the edge of the groove 22 and extends axially away from the groove 22, so that the end of the cone is sharper and easier to break objects such as glass; the intersection of the inner ends of each ventilation hole 21 forms a flat bottom structure 23, which facilitates the smooth delivery of air force; the connecting part 20 is a connector with external threads, which is threaded to the internal threaded hole at the air outlet of the fan body 1, which facilitates the convenient installation or removal of the blow nozzle 2 and is easy to use.

[0022] The violent fan provided by this utility model applies all the advantages of the window-breaking nozzle of the violent fan as described in the above embodiments, which will not be repeated here.

[0023] The blower nozzle 2 is mainly used in high-powered fans and can be easily installed and removed. The blower nozzle 2 adopts a tapered hollow cone structure with a single inlet and multiple outlets. Its outer wall is integrally molded from high-density polymer, and its interior has six elliptical ventilation holes 21 distributed through precise fluid simulation design. This can force the airflow to accelerate and maintain a laminar flow state, suppressing the boundary layer separation caused by airflow diffusion in traditional porous structures. The blower nozzle 2 can be quickly fixed to the fan body 1 through the connecting part 20. Through the integrated structural design of the blower nozzle 2, the striking part 3 and the fan body 1, it not only has excellent air delivery performance, but also has the safety function of quickly breaking windows to escape in emergency situations.

[0024] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by means of equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A window-breaking nozzle for a forced air fan, characterized by: The violent fan comprises a fan body (1), a blowing nozzle (2), a connecting part (20) and a knocking part (3), the blowing nozzle (2) is detachably installed at an air outlet of the fan body (1) through the connecting part (20), the blowing nozzle (2) is provided with a plurality of ventilation holes (21) communicated with the air outlet in a circumferential direction, and the ventilation holes (21) are uniformly distributed in the circumferential direction, and the blowing nozzle (2) is provided with the knocking part (3) at an end away from the connecting part (20).

2. A forced entry window breaking nozzle according to claim 1 wherein: The knocking part (3) comprises an integrally formed cylinder and a cone, and the blowing nozzle (2) is provided with a groove (22) at an end away from the connecting part (20), and the cylinder is fixedly installed in the groove (22) in an embedded mode.

3. A forced entry sash bar removal nozzle according to claim 2, wherein: The cone of the knocking part (3) starts from an edge of the groove (22) and extends axially in a direction away from the groove (22).

4. A forced entry sash bar removal nozzle according to claim 1, wherein: A meeting point of inner ends of the ventilation holes (21) forms a flat bottom structure (23).

5. A forced entry sash bar removal nozzle according to claim 1, wherein: The connecting part (20) is a joint with external threads, and the joint is threadedly connected with an internal threaded hole at the air outlet of the fan body (1).

6. A brute force fan characterized by: A window breaking blowing nozzle comprising the violent fan according to any one of claims 1 to 5.

Images