Structure for indoor installation of guiding wind-shielding ventilation cap of fresh air machine
By designing a guide wind deflector for indoor installation of the fresh air unit, the problems of complex installation and low ventilation efficiency of traditional wind deflectors are solved, achieving convenient installation and efficient wind deflection, thus promoting the application of fresh air units in northern regions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING DONGFANG ZHIMING TECH CO LTD
- Filing Date
- 2025-02-19
- Publication Date
- 2026-05-15
AI Technical Summary
Traditional fresh air systems have complex and dangerous outdoor hemispherical ventilator installations, high-altitude operation risks, low ventilation efficiency, and cannot effectively block cold air from entering the room, which limits the promotion and application of fresh air systems in northern regions.
Design a new type of indoor air ventilator with a guide wind deflector and ventilation cap. It adopts a structure that combines a spherical top with a frustum-shaped outdoor guide wind deflector. The cap is tightly connected to the ventilation duct by a positioning column to form an air intake space. The frustum-shaped outdoor guide wind deflector changes the airflow direction and blocks outdoor air from flowing into the room.
It enables convenient indoor installation of fresh air units, effectively blocks the inflow of outdoor air, reduces heat and cold loss, ensures the normal use and ventilation capacity of fresh air units in northern regions, and reduces the risks of high-altitude operations.
Smart Images
Figure CN224246412U_ABST
Abstract
Description
Technical Field
[0001] This utility model focuses on the field of outdoor wind cap structure, specifically relating to a structure for an indoor installation guide wind deflector ventilation cap for a fresh air unit, aiming to solve a series of problems encountered in the interaction between the fresh air unit and the outdoor environment during installation and use. Background Technology
[0002] In the installation practice of both air purification units and conventional air purifiers, traditional outdoor hemispherical ventilators have revealed significant shortcomings. While they can prevent rainwater backflow to some extent, the installation process is complex and dangerous, especially when working on the exterior of high-rise buildings, where high-altitude installation is extremely risky. Furthermore, although the louver design of traditional ventilators can block leaves and other debris, it greatly reduces the ventilation efficiency at the end of the ventilation duct and offers almost no wind protection. In frigid climates or during strong winds and temperature drops, large amounts of cold air will rush into the room without obstruction through the ventilation ducts, causing a sharp drop in indoor temperature. This severely limits the promotion and application of air purifiers in cold northern regions. Therefore, developing a ventilator and installation structure that can be easily installed indoors, possesses excellent wind protection performance, and facilitates the widespread use of air purifiers in northern regions has become an urgent priority. Summary of the Invention
[0003] This utility model aims to overcome the limitations of existing technologies and innovatively proposes a structure for installing a guide windbreak ventilation cap indoors in a fresh air unit.
[0004] The outdoor guide wind deflector of this fresh air unit mainly consists of key components such as a spherical top, a frustum-shaped outdoor guide wind deflector body, mounting and positioning columns, and duct installation columns. The outer arc diameter of the mounting and positioning column is precisely equal to the diameter of the largest cross-sectional circle of the frustum-shaped outdoor guide wind deflector body, and approximately equal to the outer diameter of the duct, with the error strictly controlled within a range not exceeding 2%. The spherical top and the duct installation columns are located at opposite ends of the outdoor guide wind deflector of the fresh air unit, forming a unique structural layout.
[0005] The installation process is as follows: First, accurately cut the ventilation duct indoors according to the wall thickness, the outdoor extension length (this length should not be less than 10mm), and the required length for the indoor fresh air unit installation. Next, slowly insert the duct installation column of the outdoor guide wind deflector of the fresh air unit into the ventilation duct cavity until the installation positioning column is in close contact with the opening of the ventilation duct. During this process, several air intake spaces will naturally be formed by the lower end of the frustum-shaped outdoor guide wind deflector, the side of the installation positioning column, and the opening of the ventilation duct. Subsequently, apply glue evenly to the contact area between the ventilation duct and the duct installation column for reinforcement, thus completing the assembly of the ventilation duct and the outdoor guide wind deflector of the fresh air unit, forming a complete ventilation duct assembly. Finally, smoothly extend the ventilation duct assembly to the outside along the indoor and outdoor ventilation holes, ensuring that the length of the indoor section of the ventilation duct exactly meets the installation requirements of the indoor fresh air unit. The indoor installation is now successfully completed.
[0006] When outdoor air blows directly into the room along the ventilation duct axis, the front of the outdoor guide deflector cap of the fresh air unit effectively and completely blocks the airflow. Simultaneously, the truncated cone outdoor guide deflector cleverly alters the direction of the airflow, creating an air curtain that extends from the truncated cone outdoor guide deflector to the exterior wall and runs in the same direction as the cone, effectively preventing outdoor air from impacting the wall and reflecting back into the intake space. When the outdoor wind deviates from the ventilation duct axis and blows into the room, the front of the outdoor guide deflector cap partially blocks the outdoor airflow, while the windward side of the truncated cone outdoor guide deflector changes the direction of the airflow, creating an air curtain that extends from the truncated cone outdoor guide deflector to the exterior wall and runs in the same direction as the cone, thus effectively blocking most of the outdoor airflow from entering the intake space and significantly reducing the amount of outdoor air entering the room. As a result, the amount of debris such as leaves entering the room with the outdoor airflow is also greatly reduced, successfully retaining the basic function of a traditional deflector cap in blocking debris. By significantly blocking outdoor airflow from entering the room, it effectively reduces indoor cooling loss during hot summers and heat loss during cold winters. When the fresh air unit starts working, its internal suction creates a continuous and stable low pressure within the ventilation duct cavity, allowing outdoor air to smoothly enter the ventilation duct cavity from the air intake space, providing a continuous and sufficient air supply for the fresh air unit and greatly promoting its widespread application in northern regions.
[0007] The specific structure of this utility model has the following significant features:
[0008] A structure for an indoor guide wind deflector for a fresh air unit includes an outdoor guide wind deflector for the fresh air unit and a ventilation duct. The outdoor guide deflector cap of the fresh air unit has a spherical top, which is integrally connected to the upper end of the truncated cone outdoor guide deflector body. The lower end of the truncated cone outdoor guide deflector body is integrally and smoothly connected to several outer arc-shaped mounting and positioning columns. The upper end of the truncated cone outdoor guide deflector body has the smallest cross-sectional diameter. The outer arc diameter of the mounting and positioning columns is equal to and concentric with the lower end cross-sectional diameter of the truncated cone outdoor guide deflector body. Each mounting and positioning column is integrally connected to an outer arc-shaped pipe mounting column. The outer arc of the pipe mounting column is concentric with the lower outer circle of the truncated cone outdoor guide deflector body. The length of the ventilation duct includes the wall thickness, the length required for indoor installation, and the outdoor extension length. During installation, the pipe mounting columns of the outdoor guide deflector cap of the fresh air unit are fully inserted into the ventilation duct cavity until the mounting and positioning columns abut against the opening of the ventilation duct. Reinforcing adhesive is then applied. The lower end of the truncated cone outdoor guide deflector body, the side of the mounting and positioning columns, and the opening of the ventilation duct together form several air intake spaces. Then, with one end of the outdoor guide wind deflector of the fresh air unit facing outwards, extend it outwards along the ventilation hole in the wall, leaving the remaining length of the ventilation duct inside the room required for indoor installation, thus completing the indoor installation.
[0009] The angle between the extended inclined surface of the truncated cone outdoor wind deflector and the axis of the truncated cone outdoor wind deflector is precisely between 40º and 50º. This unique design cleverly balances structural volume and performance. Furthermore, the truncated cone outdoor wind deflector is non-directional and can adapt to various wind direction environments.
[0010] The length of the installation positioning column is greater than or equal to one-quarter of the inner diameter of the ventilation duct cavity and does not exceed 5%. This design point can fully ensure that the ventilation capacity of the duct is maximized, while the air curtain effectively blocks most of the outdoor air from blowing into the room, maintaining the stability of the indoor environment.
[0011] The outdoor length of ventilation ducts, which is the distance from the duct opening to the wall, is usually set to be no less than 10mm to meet basic ventilation and protection requirements. Attached Figure Description
[0012] Figure 1 is a front view schematic diagram of the outdoor guide wind deflector cap of the fresh air unit; Figure 2 This is a top-view diagram; Figure 3 This is a three-dimensional schematic diagram; Figure 4 This is a three-dimensional schematic diagram of a ventilation duct. Figure 5 Figure 1 is a schematic diagram of the main view of the installation structure; Figure 6 is a schematic diagram of the main sectional view of the installation structure.
[0013] 1. Outdoor guide wind deflector cap for fresh air unit; 2. Spherical top; 3. Frustum-shaped outdoor guide wind deflector body; 4. Mounting and positioning column; 5. Pipe mounting column; 6. Air inlet space; 7. Ventilation duct; 8. Ventilation duct cavity; 9. Ventilation duct inlet. Detailed Implementation
[0014] The implementation of this utility model is described in detail with reference to Figures 1-6:
[0015] A structure for an indoor air ventilator guide deflector, the core component of which is an outdoor air ventilator guide deflector 1. The outdoor air ventilator guide deflector 1 has a spherical top 2, which is seamlessly connected to the upper end of a frustum-shaped outdoor air ventilator 3 via an integrated, smooth connection. The angle between the extended inclined plane of the frustum-shaped outdoor air ventilator 3 and its axis is consistently between 40º and 50º. Several outer arc-shaped mounting and positioning columns 4 are seamlessly connected to its lower end. The length of each mounting and positioning column 4 is greater than or equal to one-quarter of the inner diameter of the ventilation duct cavity 8 and does not exceed 5%. The upper cross-sectional diameter of the frustum-shaped outdoor air ventilator 3 is the smallest. Each mounting and positioning column 4 is integrally connected to an outer arc-shaped duct mounting column 5. The diameter of the outer arc of the mounting positioning column 4 is equal to and concentric with the diameter of the lower cross-section circle of the frustum-shaped outdoor guide wind deflector 3. The outer arc of the duct mounting column 5 is concentric with the lower outer circle of the frustum-shaped outdoor guide wind deflector 3. All components are tightly and reliably connected. The length of the ventilation duct 7 covers the wall thickness, the length required for indoor installation, and the length extending outdoors. The outdoor length of the ventilation duct 7 is the distance from the duct opening 9 to the wall surface, generally not less than 10mm. During installation, the duct mounting column 5 of the fresh air unit's outdoor guide wind deflector cap 1 is fully inserted into the ventilation duct cavity 8 until the mounting positioning column 4 abuts against the duct opening 9. Reinforcing adhesive is then applied, forming several air inlet spaces 6 enclosed by the lower end of the frustum-shaped outdoor guide wind deflector 3, the side of the mounting positioning column 4, and the duct opening 9. Then, with one end of the outdoor guide windproof cap 1 of the fresh air unit facing the outside, extend it smoothly outward along the ventilation hole in the wall until the remaining length of the ventilation duct 7 required for indoor installation is reached, thus completing the non-directional indoor installation.
[0016] After implementation of this utility model, the ventilation duct 7 and the outdoor guide wind deflector 1 of the fresh air unit are successfully assembled into a ventilation duct assembly. When outdoor wind blows into the room along the axis of the ventilation duct 7, the outdoor airflow is completely blocked by the front of the outdoor guide wind deflector 1 of the fresh air unit. At the same time, the truncated cone outdoor guide wind deflector 3 changes the direction of the airflow, forming an airflow curtain from the truncated cone outdoor guide wind deflector 3 to the outer wall surface and in the same direction as the truncated cone outdoor guide wind deflector 3, preventing the outdoor airflow from being blown onto the wall surface and reflected into the air intake space 6. When the outdoor wind deviates from the axis of the ventilation duct 7 and blows into the room, the outdoor airflow is blocked by the front part of the outdoor guide wind deflector 1 of the fresh air unit. The windward side of the truncated cone outdoor guide wind deflector 3 changes the direction of the airflow, forming an airflow curtain from the truncated cone outdoor guide wind deflector 3 to the outer wall surface and in the same direction as the truncated cone outdoor guide wind deflector 3, mostly blocking the outdoor airflow from entering the air intake space 6, thus significantly reducing the amount of outdoor airflow entering the room. Correspondingly, the amount of debris such as leaves entering the room with the outdoor airflow is significantly reduced, retaining the function of a traditional windproof hood. By significantly blocking the entry of outdoor airflow into the room, it reduces the loss of indoor cooling during hot summers and the loss of indoor heat during cold winters. When the fresh air unit is working, its suction effect creates a continuous low pressure within the ventilation duct cavity 8, allowing outdoor air to enter the ventilation duct cavity 8 from the air intake space 6, providing air for the fresh air unit and promoting its operation.
[0017] In summary, the structure of the indoor installation guide wind deflector for fresh air units of this utility model successfully achieves non-directional indoor installation, completely eliminating the dangerous high-altitude outdoor installation required by traditional wind deflectors. It effectively blocks outdoor wind from blowing into the room along the axis and off-axis of the ventilation duct, significantly reducing indoor heat loss, aligning with energy-saving and environmental protection principles, and without weakening the duct's ventilation capacity, ensuring smooth air intake for the fresh air unit. This will undoubtedly strongly promote the widespread application of fresh air units in northern regions. The core essence of this utility model is the clever use of the outdoor guide wind deflector to prevent disorderly entry of outdoor air into the room, thereby effectively reducing the adverse effects of outdoor temperature on indoor temperature. The specific structure and parameters of this utility model are not absolute limitations; appropriate optimization and adjustments can be made according to actual needs and production conditions, while adhering to the design concept and spirit of this utility model.
Claims
1. A structure for installing a guide windbreak ventilation cap indoors in a fresh air unit, characterized in that: The system includes an outdoor guide wind deflector cap (1) for a fresh air unit and a ventilation duct (7). The outdoor guide wind deflector cap (1) for the fresh air unit has a spherical top end (2). The spherical top end (2) is integrally connected to the upper end of a frustum-shaped outdoor guide wind deflector body (3). The lower end of the frustum-shaped outdoor guide wind deflector body (3) is integrally and smoothly connected to several outer arc-shaped mounting and positioning columns (4). The upper end of the frustum-shaped outdoor guide wind deflector body (3) has the smallest cross-sectional diameter. The outer arc diameter of the mounting and positioning column (4) is equal to and concentric with the lower end cross-sectional diameter of the frustum-shaped outdoor guide wind deflector body (3). Each mounting and positioning column (4) is integrally connected to an outer arc-shaped pipe mounting column (5). The outer arc of the pipe mounting column (5) is concentric with the frustum-shaped outdoor guide wind deflector body (7). The lower outer circle of the outdoor guide wind deflector (3) is concentric with the center of the circle; the length of the ventilation duct (7) includes the wall thickness, the length required for indoor installation and the length extending outdoors; during installation, the pipe installation column (5) of the outdoor guide wind deflector cap (1) of the fresh air unit is fully inserted into the ventilation duct cavity (8) until the installation positioning column (4) abuts against the pipe opening (9) of the ventilation duct, and reinforcement glue is applied. The lower end of the frustum outdoor guide wind deflector (3), the side of the installation positioning column (4) and the pipe opening (9) of the ventilation duct together form several air intake spaces (6); then, one end of the outdoor guide wind deflector cap (1) of the fresh air unit faces outdoors and extends outdoors along the ventilation hole of the wall, so that the remaining length of the ventilation duct (7) on the indoor side is required for indoor installation.
2. The structure of a guide windbreak ventilation cap for indoor installation of a fresh air unit according to claim 1, characterized in that: The angle between the extended line of the inclined surface of the truncated outdoor guide wind deflector (3) and the axis of the truncated outdoor guide wind deflector (3) is between 40° and 50°, and the truncated outdoor guide wind deflector (3) has no directionality.
3. The structure of a guide windbreak ventilation cap for indoor installation of a fresh air unit according to claim 1, characterized in that: The length of the installation positioning column (4) is greater than or equal to one-quarter of the inner diameter of the ventilation duct cavity (8) and not more than 5%.
4. The structure of a guide windbreak ventilation cap for indoor installation of a fresh air unit according to claim 1, characterized in that: The outdoor length of the ventilation duct (7), i.e. the distance from the opening (9) of the ventilation duct to the wall, shall not be less than 10 mm.