Fresh air module and air conditioning equipment

Abstract

The utility model relates to a fresh air module and air conditioning equipment, the fresh air module comprises a shell, a volute assembly and a centrifugal fan, the volute assembly divides the shell into a first cavity and a second cavity, the shell is provided with an air inlet communicating with the first cavity and an air outlet communicating with the second cavity, a filter part is arranged in the first cavity, and the centrifugal fan is arranged in the second cavity. The centrifugal fan is arranged in the second cavity, the volute assembly is provided with an open hole communicated with the first cavity and the second cavity, a flow guide ring is arranged on the open hole, and the center of the flow guide ring is eccentrically arranged relative to the center of the centrifugal fan. According to the technical scheme, the efficiency of the draught fan is improved, aerodynamic noise is reduced, and the using effect of the fresh air module is better.

Description

Technical Field

[0001] The present disclosure relates to the technical field of air conditioning equipment, and particularly to a fresh air module and an air conditioning equipment. Background Art

[0002] With the continuous improvement of the requirements for air quality, air conditioning equipment with fresh air function is more and more favored by people. The fresh air volume and noise determine the quality of the fresh air function experience. However, the fresh air modules on the market show the phenomenon of low fresh air volume caused by the limitation of noise and abnormal noise, which affects the experience effect. Utility Model Content

[0003] To overcome the problems existing in the related art, the present disclosure provides a fresh air module and an air conditioning equipment.

[0004] According to the first aspect of the embodiments of the present disclosure, a fresh air module is provided, including a housing, a volute assembly and a centrifugal fan. Wherein, the volute assembly divides the housing into a first chamber and a second chamber. The housing is provided with an air inlet communicating with the first chamber and an air outlet communicating with the second chamber. A filter element is arranged in the first chamber. The centrifugal fan is arranged in the second chamber. The volute assembly is provided with an opening communicating the first chamber and the second chamber. A guide ring is arranged on the opening, and the center of the guide ring is eccentrically arranged relative to the center of the centrifugal fan.

[0005] Optionally, the air inlet and the air outlet are respectively arranged on two sides of the housing along a first direction, and the air outlet is arranged on the first side of the housing along a second direction, wherein the first direction and the second direction are orthogonal, and the guide ring offsets towards the second side of the second direction and towards the side close to the air outlet in the first direction.

[0006] Optionally, the range of the eccentric angle of the guide ring is , and the range of the eccentric distance of the guide ring is , where is the radius of the blades of the centrifugal fan.

[0007] Optionally, the range of the eccentric angle of the guide ring is , and the range of the eccentric distance of the guide ring is .

[0008] Optionally, the guide ring is integrally formed on the inner peripheral edge of the opening.

[0009] Optionally, the housing includes a first housing and a second housing, and the first housing and the second housing are detachably buckled on the volute assembly from both sides to respectively enclose the first chamber and the second chamber.

[0010] Optionally, the volute assembly includes a volute body, the opening is provided on the volute body, a first frame is provided on one side surface of the volute body for accommodating the filter element, and a second frame is provided on the other side surface of the volute body for accommodating the centrifugal fan and forming a volute air duct.

[0011] Optionally, the housing further includes an air inlet passage, one end of the air inlet passage is communicated with the air inlet, and the other end of the air inlet passage is provided with an interface for connecting with a fresh air pipe, wherein the axis of the interface is perpendicular or angled to the axis of the air inlet.

[0012] Optionally, reinforcing ribs are provided on the outer wall surface of the housing.

[0013] According to a second aspect of the embodiments of the present disclosure, an air conditioning device is provided, including the fresh air module of any one of the above.

[0014] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: By eccentrically setting the center of the guide ring relative to the center of the centrifugal fan, the fresh air module provided by the present disclosure can improve the eddy current in the impeller and optimize the flow separation in the impeller passage, solve the blockage problem at the impeller passage inlet, increase the effective flow area of the impeller, make the air flow more uniform, reduce the flow leakage at the volute tongue, improve the fan efficiency, and achieve the purpose of reducing the aerodynamic noise without reducing the air intake volume, and the use effect of the fresh air module is better.

[0015] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0017] Figure 1 is a schematic diagram showing the positional relationship between the internal guide ring and the centrifugal fan of a fresh air module according to an exemplary embodiment.

[0018] Figure 2 is an exploded view of the structure of a fresh air module according to an exemplary embodiment.

[0019] Figure 3 is a schematic diagram of the structure of a volute assembly according to an exemplary embodiment.

[0020] DESCRIPTION OF THE REFERENCE NUMERALS

[0021] 1 - housing, 11 - first housing, 12 - second housing, 13 - first chamber, 14 - second chamber, 15 - air inlet, 16 - air outlet, 17 - air inlet channel, 18 - interface, 19 - reinforcing rib, 2 - volute assembly, 21 - volute body, 22 - first frame, 23 - second frame, 211 - opening, 22 - filter body, 3 - centrifugal fan, 4 - deflector ring, 5 - filter element. Detailed implementation manners

[0022] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0023] It should be noted that all actions of obtaining signals, information or data in the present disclosure are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where it is located and obtaining authorization from the owner of the corresponding device.

[0024] As Figures 1 to 3 shown, an exemplary implementation manner of the present disclosure provides a fresh air module, and the fresh air module can be applied to, including but not limited to, a fresh air fan or an air conditioner with a fresh air function. Specifically, the fresh air module includes a housing 1, a volute assembly 2, and a centrifugal fan 3. Among them, the volute assembly 2 divides the housing 1 into a first chamber 13 and a second chamber 14. The housing 1 is provided with an air inlet 15 communicating with the first chamber 13 and an air outlet 16 communicating with the second chamber 14. A filter element 5 is arranged in the first chamber 13, the centrifugal fan 3 is arranged in the second chamber 14, the volute assembly 2 is provided with an opening 211 communicating the first chamber 13 and the second chamber 14, and a deflector ring 4 is arranged on the opening 211. The center of the deflector ring 4 is eccentrically arranged relative to the center of the centrifugal fan 3.

[0025] Among them, the first chamber 13 serves as an air inlet chamber, and the second chamber 14 serves as an air outlet chamber. Under the action of the negative pressure generated when the centrifugal fan 3 works, external air can be sucked into the first chamber 13 from the air inlet 15, and then enter the second chamber 14 through the opening 211 after being filtered and purified by the filter element 5. The filtered and purified air in the second chamber 14 is discharged into the room from the air outlet 16 under the action of the centrifugal fan 3. During the process of air flowing from the first chamber 13 into the second chamber 14 through the opening 211, the deflector ring 4 guides the air flow to the centrifugal fan 3, that is, the deflector ring 4 plays a role in guiding the flow.

[0026] In the related art, a scheme in which the center of the flow guide ring 4 coincides with or is approximately coincident with the center of the centrifugal fan 3 is mostly adopted. However, this design usually brings the problem of uneven air flow, which affects the efficiency of the fan, and is likely to increase the aerodynamic noise when trying to increase the air intake, thus hindering the increase of the air intake.

[0027] In the present disclosure, by eccentrically arranging the center of the flow guide ring 4 relative to the center of the centrifugal fan 3, the eddy current in the impeller and the flow separation in the blade passage can be improved and optimized, the blockage problem at the inlet of the blade passage can be solved, the effective flow area of the impeller is increased, the air flow is more uniform, the flow leakage at the volute tongue is reduced, the fan efficiency is improved, and the purpose of reducing the aerodynamic noise without reducing the air intake is achieved, and the use effect of the fresh air module is better.

[0028] The flow guide ring 4 can be selected to offset in a direction relative to the centrifugal fan 3 according to actual needs. As Figure 1 shown, in some embodiments, the air inlet 15 and the air outlet 16 are respectively arranged on both sides of the housing 1 along the first direction, and the air outlet 16 is arranged on the first side of the housing 1 along the second direction, wherein the first direction and the second direction are orthogonal. The first direction is the left-right direction in the figure, and the second direction is the up-down direction in the figure. Thus, the air outlet 16 can be regarded as being arranged in the upper right of the housing 1.

[0029] Among them, the flow guide ring 4 offsets toward the second side in the second direction and toward the side close to the air outlet 16 in the first direction. Combining with the drawings, when the air outlet 16 is arranged in the upper right, the flow guide ring 4 offsets toward the upper left. Usually, a volute tongue is arranged at this position, and the impact backflow phenomenon generated at the volute tongue is an important reason for generating aerodynamic noise. In this way, offsetting the flow guide ring 4 toward the upper left of the housing 1 can use the flow guide ring 4 to reduce or even avoid the impact backflow at this position, so that the aerodynamic noise can be reduced when the air intake remains unchanged, or the air intake can be further increased when the aerodynamic noise is maintained at a low level, and the use experience of the fresh air module is improved.

[0030] Continue to refer to Figure 1 , the range of the eccentric angle of the flow guide ring 4 can be , the range of the eccentric distance of the flow guide ring 4 is , where is the radius of the blade of the centrifugal fan 3. That is, the position of the flow guide ring 4 can be determined by two parameters, the eccentric angle and the eccentric distance. Still taking the air outlet 16 arranged in the upper right of the housing 1 as an example, with the center of the centrifugal fan 3 or the center of the impeller as the center and the radius of the impeller as , the starting angle is made in the horizontal direction, which is , the horizontal line rotates counterclockwise, and the included angle with the original horizontal line is , which is the eccentric angle. The distance moved in the direction of the eccentric angle is That is the eccentricity. Optionally, the range of the eccentricity angle of the flow guiding ring 4 can be , and the range of the eccentricity of the flow guiding ring 4 can be . For example, when the eccentricity angle is and the eccentricity , it can increase the air intake volume.

[0031] As Figure 3 shown, the flow guiding ring 4 can be integrally formed on the inner peripheral edge of the opening 211. Considering that the flow guiding ring 4 is continuously impacted by the air flow, the flow guiding ring 4 is integrally formed on the inner peripheral edge of the opening 211 of the volute component 2, so that the volute component 2 with higher structural strength can bear the impact of the air flow.

[0032] As Figure 1 shown, in some embodiments, the housing 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are detachably buckled on the volute component 2 from both sides to respectively enclose a first chamber 13 and a second chamber 14. The split design of the housing 1 is beneficial to disassembling and assembling internal components such as the filter element 5 and the centrifugal fan 3.

[0033] In some other embodiments, also referring to Figure 3 , the volute component 2 includes a volute body 21. The opening 211 is provided on the volute body 21. A first frame 22 is provided on one side surface of the volute body 21. The first frame 22 is used to accommodate the filter element 5. A second frame 23 is provided on the other side surface of the volute body 21. The second frame 23 is used to accommodate the centrifugal fan 3 and form a volute air duct. The filter element 5 can adopt a high-efficiency filter net. In the figure, the first frame 22 is configured as a rectangular frame matching the shape of the filter element 5. Similarly, the second frame 23 can be configured as a substantially circular frame. A volute air duct is formed between the inner peripheral wall of the second frame 23 and the centrifugal fan 3. The volute air duct is communicated with the air outlet 16. The volute tongue is arranged at the position where the volute air duct is communicated with the air outlet 16.

[0034] As Figure 3As shown, the housing 1 may further include an air inlet passage 17. One end of the air inlet passage 17 communicates with the air inlet 15, and the other end of the air inlet passage 17 is provided with an interface 18 for connecting to a fresh air pipe. Among them, the axis of the interface 18 is perpendicular or angled to the axis of the air inlet 15. In this way, as shown by the arrows in the figure, the fresh air needs to pass through the air inlet passage 17 first and then enter the interior of the housing 1. That is, different from the related art solution that allows the fresh air to directly enter the interior of the housing 1, the present disclosure allows the fresh air to first enter the air inlet passage 17, avoiding the high-speed fresh air directly impacting the inner wall of the housing 1, thereby reducing wind loss and being beneficial to increasing the fresh air volume. At the same time, considering that the axis of the interface 18 is perpendicular or angled to the axis of the air inlet 15, the pressure difference is greatly reduced when the fresh air enters the housing 1 after passing through the air inlet passage 17, so that little or no acceleration is generated for the fresh air, which is beneficial to further avoiding the impact of the fresh air on the inner wall of the housing 1 and thus reducing noise.

[0035] In addition, reinforcing ribs 19 are provided on the outer wall surface of the housing 1. For example, in Figure 1 the illustrated embodiment, the outer wall surfaces of the first housing 11 and the second housing 12 may be respectively provided with reinforcing ribs 19. The reinforcing ribs 19 can be designed according to the shapes of the first housing 11 and the second housing 12. For example, for the rectangular first housing 11, the reinforcing ribs 19 can be configured as a plurality of strip-shaped reinforcing ribs arranged at intervals in a straight line direction, and for the spiral-shaped second housing 12, the reinforcing ribs 19 can be configured as a spider-web-shaped reinforcing rib diverging from the center.

[0036] According to the second aspect of the embodiments of the present disclosure, there is also provided an air conditioning device, including the fresh air module described in any one of the above, and having all its beneficial effects, which will not be elaborated here.

[0037] Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure, which follow the general principles of the present disclosure and include well-known knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the appended claims.

[0038] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A fresh air module, characterized in that, It includes a housing, a volute component and a centrifugal fan. Among them, the volute component divides the housing into a first chamber and a second chamber. The housing is provided with an air inlet communicating with the first chamber and an air outlet communicating with the second chamber. A filter element is arranged in the first chamber. The centrifugal fan is arranged in the second chamber. The volute component is provided with an opening communicating the first chamber and the second chamber. A flow guide ring is arranged on the opening. The center of the flow guide ring is eccentrically arranged relative to the center of the centrifugal fan.

2. The fresh air module according to claim 1, wherein, The air inlet and the air outlet are respectively arranged on two sides of the housing along a first direction. The air outlet is arranged on the first side of the housing along a second direction. Among them, the first direction and the second direction are orthogonal. The flow guide ring deviates towards the second side of the second direction and towards the side close to the air outlet in the first direction.

3. The fresh air module according to claim 2, wherein The range of the eccentric angle of the flow guide ring is , and the range of the eccentricity of the flow guide ring is , where is the radius of the blade of the centrifugal fan.

4. The fresh air module according to claim 3, characterized in that, The range of the eccentric angle of the flow guide ring is , and the range of the eccentricity of the flow guide ring is .

5. The fresh air module according to claim 1, characterized in that, The flow guide ring is integrally formed on the inner peripheral edge of the opening.

6. The fresh air module according to claim 1, characterized in that, The housing includes a first housing and a second housing. The first housing and the second housing are detachably buckled on the volute component from both sides to respectively enclose the first chamber and the second chamber.

7. The fresh air module according to claim 6, wherein, The volute component includes a volute body. The opening is arranged on the volute body. A first frame is arranged on one side surface of the volute body. The first frame is used to accommodate the filter element. A second frame is arranged on the other side surface of the volute body. The second frame is used to accommodate the centrifugal fan and form a volute air duct.

8. The fresh air module according to claim 1, wherein The housing further includes an air inlet channel. One end of the air inlet channel is communicated with the air inlet. The other end of the air inlet channel is provided with an interface for connecting with a fresh air pipe. Among them, the axis of the interface is perpendicular or angled with the axis of the air inlet.

9. The fresh air module according to claim 1, wherein Reinforcing ribs are arranged on the outer wall surface of the housing.

10. An air conditioning device, characterized in that, It includes the fresh air module according to any one of claims 1-9.

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