Wind wheel, fresh air module and air conditioner
By opening ventilation holes on the wind turbine disk and adjusting the blade design, the problems of eddy currents and secondary backflow during wind turbine operation were solved, the airflow stability was improved, the vibration and resonance of the wind turbine were reduced, and the aerodynamic performance of the wind turbine was enhanced.
Patent Information
- Application Number
- CN202520247040.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-02-14
AI Technical Summary
When the impeller of the existing axial flow fresh air module is running, the wind field becomes unstable due to changes in wind direction, resulting in eddies and secondary backflow, which causes the airflow to collide with the impeller and generate oscillations and resonance.
Ventilation holes are made on the rotor disc, and by adjusting the size and distribution of the ventilation holes, combined with the design of multiple first and second blades, airflow separation loss and unstable flow are improved, and periodic impacts and pressure pulsations between the airflow and the blades are reduced.
By improving airflow separation losses and unstable flow, the aerodynamic performance of the wind turbine is improved by reducing airflow oscillations and resonance at the turbine outlet.
Smart Images
Figure CN223814183U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a wind wheel, a fresh air module, and an air conditioner. BACKGROUND
[0002] A fresh air conditioner can not only adjust indoor temperature, but also has the functions of introducing outdoor fresh air, discharging indoor dirty air, and air purification. An axial flow fresh air module has become one of the common choices in fresh air conditioners due to its small size. However, when the wind wheel of the existing axial flow fresh air module is running, due to the change of wind direction, unstable vortex and secondary backflow occur in the wind field in the wind wheel, resulting in shock and resonance caused by airflow impacting the wind wheel.
[0003] Therefore, it is necessary to improve the prior art.
[0004] The above information is given as background information only to assist with an understanding of the present disclosure, and does not constitute admission or recognition that any of the above information constitutes prior art with respect to the present disclosure. CONTENT OF THE UTILITY MODEL
[0005] Embodiments of the present application provide a wind wheel, a fresh air module, and an air conditioner to solve the problem of shock and resonance caused by airflow impacting the wind wheel.
[0006] In a first aspect, embodiments of the present application provide a wind wheel, comprising:
[0007] A wheel disc, wherein an air passage hole is formed in the wheel disc, and the size of the air passage hole changes along the direction in which the air passage hole is formed;
[0008] A plurality of first blades, wherein the plurality of first blades are sequentially and spacedly distributed on one side of the wheel disc along the circumferential direction of the wheel disc;
[0009] A plurality of second blades, wherein the plurality of second blades are sequentially and spacedly distributed on the other side of the wheel disc along the circumferential direction of the wheel disc.
[0010] In a possible implementation, two adjacent first blades form an air duct, the air passage hole is located in the air duct, and the air passage hole is formed along the extension direction of the air duct.
[0011] In a possible implementation, the size of the air passage hole gradually increases along the direction from one side of the wheel disc to the other side of the wheel disc.
[0012] In a possible implementation, the first blade is provided with a fairing on the side close to the core axis of the wheel disc, the fairing connects the side close to the wheel disc and the side away from the wheel disc of the first blade, and the fairing is inclined to the side away from the core axis of the wheel disc along the extension direction of the first blade.
[0013] In a possible implementation, the number of the second wind blades is greater than the number of the first wind blades.
[0014] In a possible implementation, at least one of the first wind blades is provided with a notch on a side away from the wheel disc.
[0015] In a possible implementation, the wheel disc is provided with a shaft sleeve, the shaft sleeve is arranged on a side of the wheel disc close to the first wind blades, and a slope surface is arranged between a side wall of the shaft sleeve and a side surface of the wheel disc close to the first wind blades.
[0016] In a possible implementation, the wind wheel further comprises a wheel ring, the wheel ring is connected to a side of at least one of the first wind blades away from the wheel disc.
[0017] In a second aspect, the embodiments of the present application further provide a fresh air module, the fresh air module comprising the wind wheel according to any one of the above.
[0018] In a third aspect, the embodiments of the present application further provide an air conditioner, the air conditioner comprising the wind wheel according to any one of the above.
[0019] Compared with the prior art, the present application has the following beneficial effects:
[0020] The wind wheel provided by the embodiments of the present application can improve the separation loss and unstable flow of the airflow on the side of the second wind blades by arranging the air holes on the wheel disc, so that the airflow on the side of the first wind blades can flow to the side of the second wind blades through the air holes. The airflow flowing through the air holes can reduce the periodic collision and pressure pulsation of the airflow at the outlet of the wind wheel and the second wind blades, and solve the problem of shock and resonance caused by the collision of the airflow and the wind wheel. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.
[0022] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.
[0023] Figure 1 The structural schematic diagram of the wind wheel provided by the embodiments of the present application.
[0024] Figure 2 The top view of the wind wheel provided by the embodiments of the present application.
[0025] In the figure: 1, wheel disc; 11, air hole; 2, first fan blade; 21, air duct; 22, fairing surface; 23, notch; 3, second fan blade; 4, shaft sleeve; 5, slope surface; 6, wheel ring. DETAILED DESCRIPTION
[0026] To make the possible application scenarios, technical principles, specific schemes that can be implemented, purposes and effects achieved, etc. of the present application clear, the following will be described in detail in combination with the specific embodiments listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical schemes of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application.
[0027] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features.
[0028] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the accompanying drawings in the embodiments of the present application.
[0029] The present application provides a wind wheel, a fresh air module and an air conditioner to solve the problem of shock and resonance caused by airflow and wind wheel impact. The following will be described in combination with the accompanying drawings.
[0030] Please refer to Figure 1 and Figure 2 , the present application provides a wind wheel, which comprises a wheel disc 1, a plurality of first fan blades 2 and a plurality of second fan blades 3, an air hole 11 is formed on the wheel disc 1, the size of the air hole 11 changes along the direction in which the air hole 11 is formed; the plurality of first fan blades 2 are distributed on one side of the wheel disc 1 in sequence along the circumferential direction of the wheel disc 1; and the plurality of second fan blades 3 are distributed on the other side of the wheel disc 1 in sequence along the circumferential direction of the wheel disc 1.
[0031] By forming the air hole 11 on the wheel disc 1, when the wind wheel rotates, the airflow located on one side of the first fan blade 2 can flow to the other side of the second fan blade 3 through the air hole 11, and the airflow flowing from the air hole 11 can improve the separation loss and unstable flow of the airflow on the other side of the second fan blade 3, thereby reducing the periodic impact and pressure pulsation of the airflow at the outlet of the wind wheel and the second fan blade 3, and solving the problem of shock and resonance caused by the impact of the airflow and the wind wheel.
[0032] Please refer to Figure 1 and Figure 2In the embodiment, the wheel disc 1 is disc-shaped, a plurality of first blades 2 are sequentially spaced and annularly distributed at the edge of one side of the wheel disc 1, and a plurality of second blades 3 are sequentially spaced and annularly distributed at the edge of the other side of the wheel disc 1. The number of the air holes 11 is multiple, the air duct 21 is formed between two adjacent first blades 2, the air holes 11 are arranged one by one with the air duct 21, and each air hole 11 is located in the corresponding air duct 21, so that the airflow in the air duct 21 can flow to the side of the second blade 3 of the fan wheel through the air hole 11. The air hole 11 is a long strip-shaped hole, and the air hole 11 is opened along the extension direction of the air duct 21, so that the airflow in the air duct 21 can flow through the air hole 11 more.
[0033] Referring to Figure 1 and Figure 2 In the embodiment, the size of the air hole 11 gradually increases from one side of the wheel disc 1 to the other side of the wheel disc 1, so that the airflow in the air duct 21 can flow to the side of the second blade 3 of the fan wheel through the gradually bracket-shaped air hole 11, the airflow will decrease the flow rate and increase the static pressure when passing through the gradually bracket-shaped air hole 11, which is beneficial to pressurize the airflow on the side of the second blade 3, thereby improving the unstable vortex and secondary backflow generated by the airflow on the side of the second blade 3.
[0034] Referring to Figure 1 and Figure 2 The first blade 2 is provided with a fairing 22 on the side close to the core axis of the wheel disc 1, the fairing 22 connects the side close to the wheel disc 1 and the side away from the wheel disc 1 of the first blade 2, and the fairing 22 is inclined to the side away from the core axis of the wheel disc 1 along the extension direction of the first blade 2. The fairing 22 can suppress the flow separation of the airflow in the air duct 21 and improve the aerodynamic performance of the fan wheel.
[0035] Referring to Figure 1 and Figure 2 The number of the second blades 3 is greater than the number of the first blades 2, and in the embodiment, the number of the second blades 3 is two more than the number of the first blades 2, and in some embodiments of the application, the number of the second blades 3 is four more than the number of the first blades 2. By making the number of the second blades 3 greater than the number of the first blades 2, the pressure loss in the flow passage on the second blade 3 side of the airflow can be reduced.
[0036] Referring to Figure 1 and Figure 2 The fan wheel further comprises a wheel ring 6, the wheel ring 6 is annularly arranged, and the wheel ring 6 is fixedly connected with the side away from the wheel disc 1 of all the first blades 2. The side away from the wheel disc 1 of each first blade 2 is also provided with a notch 23, the notch 23 is arranged on the side close to the core axis of the wheel disc 1 of the first blade 2, and the notch 23 can improve the airflow leakage on the side away from the wheel disc 1 of the first blade 2.
[0037] Please refer to Figure 1 and Figure 2 The shaft sleeve 4 is integrally formed on the wheel disc 1 and is used to connect with an external fan. The shaft sleeve 4 is in a cylindrical shape and is arranged on the side of the wheel disc 1 close to the fan blade. The core axis of the shaft sleeve 4 coincides with the core axis of the wheel disc 1. The side wall of the shaft sleeve 4 is connected with the side of the wheel disc 1 close to the fan blade through a slope surface 5. The arrangement of the shaft sleeve 4 is beneficial to the connection of the fan wheel with the external driving device.
[0038] The application further provides a fresh air module, which comprises the fan wheel as described above. The fresh air module has the fan wheel as described above, and at least has the partial or overall beneficial effects of the fan wheel, which will not be repeated here.
[0039] The application further provides an air conditioner, which comprises the fan wheel or the fresh air module as described above. The air conditioner has the fan wheel or the fresh air module as described above, and at least has the partial or overall beneficial effects of the fan wheel or the fresh air module, which will not be repeated here.
[0040] In the above embodiments, the description of each embodiment has its own focus. The parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.
[0041] Finally, it should be noted that, although the above embodiments have been described in the specification and drawings of the application, the patent protection scope of the application should not be limited. Any equivalent structure or equivalent flowchart that is based on the essential concept of the application, uses the content described in the specification and drawings of the application, or directly or indirectly implements the technical solutions of the above embodiments in other related technical fields, is included in the patent protection scope of the application.
Claims
1. A wind wheel, characterized in that The wind wheel comprises: a wheel disc (1) having a ventilation hole (11) with a variable size along the direction of the ventilation hole (11); a plurality of first wind blades (2) arranged on one side of the wheel disc (1) along the circumferential direction of the wheel disc (1); a plurality of second wind blades (3) arranged on the other side of the wheel disc (1) along the circumferential direction of the wheel disc (1).
2. The wind wheel of claim 1, wherein, An air duct (21) is formed between two adjacent first wind blades (2), and the ventilation hole (11) is located in the air duct (21) and is arranged along the extension direction of the air duct (21).
3. The wind wheel of claim 1, wherein, The size of the ventilation hole (11) gradually increases from one side of the wheel disc (1) to the other side of the wheel disc (1).
4. The wind wheel of claim 1, wherein, The first wind blade (2) is provided with a flow regulation surface (22) on the side close to the core axis of the wheel disc (1), the flow regulation surface (22) connects the side close to the wheel disc (1) and the side away from the wheel disc (1) of the first wind blade (2), and the flow regulation surface (22) is inclined to the side away from the core axis of the wheel disc (1) along the extension direction of the first wind blade (2).
5. The wind wheel of claim 1, wherein, The number of the second wind blades (3) is greater than that of the first wind blades (2).
6. The wind wheel of claim 1, wherein, At least one first wind blade (2) is provided with a notch (23) on the side away from the wheel disc (1), and the notch (23) is arranged on the side close to the core axis of the wheel disc (1) of the first wind blade (2).
7. The wind wheel of claim 1, wherein, The wheel disc (1) is provided with a shaft sleeve (4) arranged on the side close to the first wind blade (2) of the wheel disc (1), and a slope surface (5) is arranged between the side wall of the shaft sleeve (4) and the side surface of the wheel disc (1) close to the first wind blade (2).
8. The wind wheel of claim 1, wherein, The wind wheel further comprises a wheel ring (6) connected to the side away from the wheel disc (1) of at least one first wind blade (2).
9. A fresh air module, characterized in that The fresh air module comprises the wind wheel according to any one of claims 1-8.
10. An air conditioner characterized by comprising: The air conditioner comprises the wind wheel according to any one of claims 1-8.