Return air resistance reducing device for factory building
By designing the deflector and impeller in the return air device, the problem of uneven fluid distribution when air flows into the return air outlet is solved, the smooth flow of the air flow and system stability are achieved, and the air quality is improved.
Patent Information
- Application Number
- CN202420857875.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-23
AI Technical Summary
In the existing return air resistance reduction device, when air flows into the return air outlet, the fluid distribution is uneven due to irregular shape and interference, which increases air resistance and affects the indoor air quality and the stability of the ventilation system.
A factory return air resistance reduction device is designed, including a shell, a barrel structure and an impeller. The deflector and the bracket plate are spliced to form a closed air duct. The impeller rotates under the action of air flow, dispersing the air flow energy and alleviating the influence of vortex.
Through the design of the deflector and impeller, the airflow is smoother, which improves the stability of the ventilation system, reduces air resistance and improves indoor air quality.
Smart Images
Figure CN222143319U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of return air equipment, in particular to a return air resistance reducing device for a factory building. Background Art
[0002] The return air resistance reduction device is installed at the return air outlet of the ventilation system. When air flows from the space inside the building to the return air outlet, it will enter the return air duct. The airflow will be affected by the irregular shape of the duct inlet or the interference of the fluid, which may cause uneven fluid distribution and increase air resistance, and cause unstable air flow in the air outlet duct, affecting the indoor air quality. To this end, we propose a return air resistance reduction device for the factory. Utility Model Content
[0003] 1. Technical issues to be resolved
[0004] In view of the deficiencies of the prior art, the utility model provides a return air resistance reduction device for a factory building, which overcomes the deficiencies of the prior art, has a reasonable design, a compact structure, and solves the problems raised in the background technology.
[0005] (II) Technical solution
[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0007] A return air resistance reduction device for a factory building comprises an outer shell, and also comprises a barrel-shaped structure arranged in the outer shell and forming a gap with the inner wall of the outer shell, an impeller is also installed on the barrel-shaped structure, and the barrel-shaped structure comprises a support plate and a guide plate spliced together, the guide plate is axially sleeved on the support plate and extends into the gap to make it airtight, and a vent is opened on the guide plate to form an air duct in the barrel-shaped structure.
[0008] Preferably, the support plate is a star-shaped structure formed by interconnecting a plurality of right-angled triangle units.
[0009] Preferably, a mounting shaft is installed on one side of the barrel-shaped structure, and an impeller is sleeved on the mounting shaft.
[0010] Preferably, a fixing ring is sleeved on the other side of the barrel-shaped structure for reinforcement.
[0011] Preferably, the curvatures of the curved surfaces on the guide plates are different.
[0012] (III) Beneficial effects
[0013] The embodiment of the utility model provides a return air resistance reduction device for a factory building. It has the following beneficial effects:
[0014] 1. By setting the guide plate and impeller, the guide plate extends to the side gap to form a seal for the first air duct, and the impeller rotates under the action of the airflow to disperse the kinetic energy of the airflow, so that the airflow flows through the ventilation system more smoothly, alleviates the impact of the vortex on the system, and improves the overall stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the structure of the utility model;
[0016] Figure 2 It is a three-dimensional schematic diagram of the utility model;
[0017] Figure 3 For this utility model Figure 1 Schematic cross-sectional view of ;
[0018] Figure 4 It is a partial schematic diagram of the utility model;
[0019] Figure 5 It is a schematic diagram of the guide plate of the utility model.
[0020] In the figure: 1, casing; 2, bracket plate; 3, guide plate; 31, curved surface; 32, vent; 4, impeller; 41, mounting shaft; 5, fixing ring. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] See attached Figure 1-5A return air resistance reduction device for a factory building comprises a shell 1, a bracket plate 2, and a guide plate 3. The bracket plate 2 and the guide plate 3 are arranged in the shell 1 to form a barrel-shaped structure and a gap for gas flow is left between the bracket plate 2 and the inner wall of the shell 1. The bracket plate 2 is a star-shaped structure surrounded by a plurality of approximately right-angled triangles, and a cavity is formed in the barrel-shaped structure. The bracket plate 2 extends toward the gap and is connected and fixed to the inner wall of the shell 1. A plurality of guide plates 3 are sequentially installed on the barrel-shaped structure. The guide plates 3 are sleeved on the bracket plate 2 along the axial direction of the barrel-shaped structure. The guide plates 3 extend toward the gap and close it. The guide plates 3 are elastic structures, and a fixing ring 5 is sleeved at the air inlet of the barrel-shaped structure for strengthening the barrel-shaped structure as a whole. A mounting shaft 41 is installed at the air outlet of the barrel-shaped structure. An impeller 4 is sleeved on one end of the mounting shaft 41 through a bearing, and the other end of the mounting shaft 41 is connected to the star-shaped structure. When air flows from the space inside the building to the return air outlet, the air enters the device, which divides the air into a first air duct flowing through the side gap and a second air duct flowing through the barrel-shaped structure. Since the guide plate 3 is an elastic structure and closes the first air duct, the guide plate 3 will be pushed open when the incoming wind speed is large enough. At this time, the first air duct is opened. When the wind speed is insufficient, the air passes through the second air duct. The impeller 4 rotates under the action of the airflow, which can disperse the kinetic energy of the airflow, so that the airflow flows through the ventilation system more smoothly, alleviating the impact of the vortex on the system. An air balancing plate is generally installed at the rear of the impeller 4 to further alleviate the vortex phenomenon of the airflow. A vent 32 is provided at the center of the guide plate 3. The curved surface 31 on the guide plate 3 has different degrees of curvature, and its curvature degree is controlled according to the length of the barrel-shaped structure and the number of the guide plates 3.
[0023] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A return air resistance reduction device for a factory building, comprising a housing (1), characterized in that: It also includes a barrel-shaped structure arranged in the outer shell (1) and forming a side gap with the inner wall of the outer shell (1), an impeller (4) is also installed on the barrel-shaped structure, and the barrel-shaped structure is composed of a support plate (2) and a guide plate (3) spliced together, the guide plate (3) is axially sleeved on the support plate (2) and extends into the side gap to make it airtight, and a ventilation hole (32) is opened on the guide plate (3) to form an air duct in the barrel-shaped structure.
2. The return air resistance reduction device for a factory building according to claim 1, characterized in that: The support plate (2) is a star-shaped structure formed by connecting a plurality of right-angled triangle units to each other.
3. The return air resistance reduction device for a factory building according to claim 1, characterized in that: A mounting shaft (41) is installed on one side of the barrel-shaped structure, and an impeller (4) is sleeved on the mounting shaft (41).
4. The return air resistance reduction device for a factory building as claimed in claim 3, characterized in that: A fixing ring (5) is sleeved on the other side of the barrel-shaped structure for reinforcement.
5. The return air resistance reduction device for a factory building according to claim 1, characterized in that: The curvatures of the upper curved surfaces (31) of the guide plates (3) are different.