CN219415019U - Noise reduction device and air conditioner outdoor unit - Google Patents
Noise reduction device and air conditioner outdoor unit Download PDFInfo
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- CN219415019U CN219415019U CN202223266447.2U CN202223266447U CN219415019U CN 219415019 U CN219415019 U CN 219415019U CN 202223266447 U CN202223266447 U CN 202223266447U CN 219415019 U CN219415019 U CN 219415019U
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- noise reduction
- noise
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Abstract
The utility model provides a noise reduction device and an air conditioner external unit, which relate to the technical field of air conditioning and comprise the following components: noise reducing structures and vanes; the noise reduction structure is arranged on the guide vane and is used for reducing noise of air flow passing through the guide vane, the pneumatic separation of the surface of the fan is effectively delayed, the turbulent energy intensity of the fan is reduced, the pneumatic noise of the air duct system is effectively reduced, the comfort of the air duct system is improved, a large amount of noise generated in the use process of the fan in the related technology is relieved, the technical problem of influencing the experience of consumers is solved, and the technical effects of reducing the noise and improving the experience of the consumers are achieved.
Description
Technical Field
The utility model relates to the technical field of air conditioning systems, in particular to a noise reduction device and an air conditioner external unit.
Background
At present, an air conditioner is widely used as an important air conditioning tool by a large market, an office building or a residential area, and for a large central air conditioner, an outer machine of the air conditioner is generally arranged on the roof and used for heat exchange, and the outer machine is generally composed of a compressor, a separator, a shell and other components.
In the prior art, the guide vane is arranged on the fan, and gas can be pneumatically separated when passing through the guide vane, so that turbulence is generated, and larger noise is generated, and the use experience of consumers is influenced.
Disclosure of Invention
The utility model aims to provide a noise reduction device and an air conditioner external unit so as to solve the technical problem that a great amount of noise is generated in the use process of a fan in the related art, and the experience of consumers is affected.
The utility model provides a noise reduction device, comprising: noise reducing structures and vanes;
the noise reduction structure is arranged on the guide vane and is used for reducing noise of airflow passing through the guide vane.
In an alternative embodiment, the noise reducing structure comprises noise reducing apertures;
the noise reduction holes are formed in the guide vanes, the noise reduction holes extend along the thickness direction of the guide vanes, and a plurality of noise reduction holes are distributed along primitive stages of the guide vanes.
In an alternative embodiment, the relation between the diameter d of the noise reduction hole and the height h at the same primitive level cross section of the guide vane is:
0.01h＜d＜0.5h。
in an alternative embodiment, the pitch I of the noise reduction holes of the same primitive stage on the vane is related to the diameter d of the noise reduction holes by:
0.2d＜I＜5d。
in an alternative embodiment, the relation between the pitch I1 of the noise reduction holes on the adjacent elementary levels of the guide vane and the pitch I of the noise reduction holes of the same elementary level of the guide vane is:
0.5I＜I1＜10I。
in an alternative embodiment, the noise reduction structure further includes a flow guiding protrusion or a flow guiding groove;
the noise reduction structure is arranged on the guide vane and extends along the height direction of the guide vane.
In an alternative embodiment, the length a and width b of the noise reduction structure are related to the height h of the guide vane at the relative primitive level cross-section as:
h＞a＞b＞0.1h。
in an alternative embodiment, the distance L between two adjacent noise reduction structures in the same primitive stage of the guide vane is related to the length a of the noise reduction structures by:
0.1a＜L＜5a。
in an alternative embodiment, the relationship between the distance L1 between the noise reduction structures on adjacent primitive stages of the guide vane and the distance L between two noise reduction structures adjacent to the same primitive stage of the guide vane is:
0.1L＜L1＜5L。
another object of the present utility model is to provide an air conditioner external unit, which includes a cabinet, a fan and the noise reduction device;
the fan and the noise reduction device are both arranged on the cabinet body, and the noise reduction device is positioned at an air inlet or an air outlet of the fan.
The noise reduction device provided by the utility model comprises: noise reducing structures and vanes; the noise reduction structure is arranged on the guide vane, the noise reduction structure is used for reducing noise for airflow passing through the guide vane, effectively delaying pneumatic separation of the surface of the fan, reducing the turbulent kinetic energy intensity of the airflow, effectively reducing pneumatic noise of the air duct system, improving the comfort of the airflow, relieving the technical problem that a great deal of noise is generated in the use process in the related technology and influencing the experience of consumers, and achieving the technical effects of reducing the noise and improving the experience of the consumers.
The air conditioner external unit has the same advantages as those of the noise reduction device related technology, and the description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the description of the embodiments or the related art will be briefly described, and it is apparent that the drawings in the description below are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
Fig. 1 is a schematic structural diagram of a noise reduction device according to an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of a portion of a noise reduction device according to an embodiment of the present utility model;
FIG. 3 is a schematic view of an air conditioner outdoor unit according to an embodiment of the present utility model;
fig. 4 is a schematic structural diagram of a noise reduction device according to an embodiment of the present utility model.
Icon: 1-a noise reduction hole; 2-a noise reduction device; 3-an outer ring; 4-guide vanes; 5-a hub; 6, a cabinet body; 7-a fan; 8-a diversion bulge.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the prior art, the guide vane is arranged on the fan, and gas can be pneumatically separated when passing through the guide vane, so that turbulence is generated, and larger noise is generated, and the use experience of consumers is influenced. To solve the problem, the embodiment of the utility model provides a noise reduction device.
As shown in fig. 1 to 4, a noise reduction device 2 provided in an embodiment of the present utility model includes: a noise reducing structure and guide vanes 4; the noise reduction structure is arranged on the guide vane 4 and connected with the guide vane 4, and can reduce noise for airflow passing through the guide vane 4.
In the present embodiment, the noise reduction structure is provided on the surface of the guide vane 4 and arranged extending along the surface of the guide vane 4. The noise reduction device 2 further comprises a hub 5 and an outer ring 3, two ends of the guide vanes 4 are respectively connected with the hub 5 and the outer ring 3, the guide vanes 4 are provided with a plurality of guide vanes 4 which are uniformly distributed along the circumferential direction of the axis of the hub 5, each guide vane 4 is provided with a noise reduction structure, the noise reduction structures are uniformly distributed along the surface of the guide vane 4, the noise reduction structures are used for reducing noise of air flow passing through the guide vanes 4, pneumatic separation of the surface of the guide vane 4 is delayed, meanwhile, the turbulence energy intensity of the air flow is reduced, the pneumatic noise of the whole system is reduced, and the comfort of a user is improved.
Optionally, according to different air flow speeds of different positions on the guide vane 4, the densities of the noise reduction structures are different, specifically, the density of the noise reduction structures arranged at the position with the faster air flow speed on the guide vane 4 is greater than the density of the noise reduction structures arranged at the position with the slower air flow speed on the guide vane 4, that is, the distance between the noise reduction structures at the position with the faster air flow speed on the guide vane 4 is smaller than the distance between the noise reduction structures at the position with the slower air flow speed on the guide vane 4, so that noise reduction can be better reduced in the actual use process, the processing difficulty is reduced, and the noise reduction effect is more obvious.
Optionally, the noise reduction structure may be integrally formed with the guide vane 4, that is, the noise reduction structure may be integrally formed with the guide vane 4 by casting, or after the guide vane 4 is manufactured, the noise reduction structure is post-processed.
The guide vane 4 and the noise reduction structure can be arranged on the air inlet side of the fan and the air outlet side of the fan, and the noise reduction structure and the guide vane 4 can rectify and reduce the passing airflow, so that the purpose of reducing noise is achieved.
In an alternative embodiment, the noise reducing structure comprises noise reducing holes 1; the noise reduction holes 1 are arranged on the guide vanes 4, and the noise reduction holes 1 extend along the thickness direction of the guide vanes 4.
In this embodiment, the noise reduction hole 1 may be set as a through hole, may also be set as a blind hole, the cross section of the noise reduction hole 1 is circular, the noise reduction hole 1 is provided with a plurality of, a plurality of noise reduction holes 1 are arranged at intervals along each primitive stage of the guide vane 4, on each primitive stage, a plurality of noise reduction holes 1 are arranged at intervals along the height direction of the guide vane 4, and the extending direction of the noise reduction hole 1 extends along the thickness direction of each guide vane 4, so that the guide vane 4 can be provided with a through hole as the noise reduction hole 1, and also can be provided with a blind hole as the noise reduction hole 1, and the air flow is slowed down by the noise reduction hole 1 to alleviate pneumatic separation on the surface of the guide vane 4, thereby effectively reducing noise.
Optionally, the blind hole noise reduction holes 1 may be disposed on one side of the guide vane 4, or may be disposed on two sides, where the distance between the blind hole noise reduction holes 1 is consistent with the distance between the through hole noise reduction holes 1.
The number of primitive stages in this embodiment is 30, and 30 primitive stages are uniformly arranged along the radial direction of the outer ring 3.
In an alternative embodiment, the relation between the diameter d of the noise reduction hole 1 and the height h at the same elementary level section on the guide vane 4 is:
0.01h＜d＜0.5h。
in this embodiment, the relationship between the section height h of the same primitive level of the guide vane 4 and the diameter d of the noise reduction hole 1 is as shown above, the diameter d of the noise reduction hole 1 ranges from 0.01h to 0.5h, the noise reduction effect is best as measured by experiments after the noise reduction hole 1 adopts the range, the resistance to the air flow is too large when the noise reduction hole 1 is larger than 0.5h, the quick passing of the air flow is not facilitated, the heat exchange efficiency is reduced, and the turbulence energy intensity of the air flow cannot be reduced when the noise reduction hole 1 is smaller than 0.01h, so that the noise can be effectively reduced by selecting the range.
In an alternative embodiment, the pitch I of the noise reduction holes 1 on the same primitive level of the guide vane 4 is related to the diameter d of the noise reduction holes 1 as:
0.2d＜I＜5d。
in this embodiment, on the same primitive level of the guide vane 4, the pitch of two adjacent noise reduction holes 1 is I, and the pitch I is in the range between 0.2d and 5d, and it is known through experiments that the pitch I is too much higher than the density level in the range of 0.2d and below, and the resistance to the airflow is larger, and the pitch I is too much too sparse in the range of 5d and above, so that the effect of reducing the turbulence of the airflow is reduced, so that this range is selected, and meanwhile, the pitch I can be adjusted according to the flow velocity of the airflow, the pitch I can be reduced at the faster flow velocity of the airflow, and the pitch I can be increased at the slower flow velocity of the airflow, so that the airflow passing through each position of the guide vane 4 can be acted by the noise reduction holes 1, and the strength of the turbulence energy thereof is reduced, thereby improving the comfort of the user.
In an alternative embodiment, the relationship between the pitch I1 of the noise reduction holes 1 on two adjacent primitive stages in the guide vane 4 and the pitch I of the noise reduction holes 1 of the same primitive stage of the guide vane 4 is:
0.5I＜I1＜10I。
in this embodiment, in two adjacent primitive stages of the guide vane 4, the minimum pitch I1 of the noise reduction holes 1 is between 0.5 and 10 times the pitch of two adjacent noise reduction holes 1 in the same primitive stage of the guide vane 4, and the noise reduction holes 1 can adjust the noise reduction function through setting the pitches in different primitive stages and in the same primitive stage, so that the noise reduction holes have stronger adaptability and can meet different use environments.
In an alternative embodiment, the noise reduction structure comprises a flow guiding protrusion or a flow guiding groove; the noise reduction structure is arranged on the guide vane 4, is arranged along the flow direction of the airflow, and is connected with the guide vane 4.
In this embodiment, the noise reduction structure is disposed on the surface of the guide vane 4, the noise reduction structure is disposed along the surface protrusion or recess of the guide vane 4 to form a guide protrusion or guide groove, the noise reduction structure extends along the height direction of the guide vane 4, the noise reduction structure may be disposed on one side of the guide vane 4 or may be disposed on two sides of the guide vane 4, the noise reduction structure is disposed in a plurality of parts, and each guide vane 4 is disposed thereon, and on each part of the guide vane 4, a plurality of noise reduction structures are disposed thereon along the part of the guide vane 4, each noise reduction structure is used for guiding, preventing the airflow from being pneumatically separated on the surface of the guide vane 4, so that the airflow can flow more smoothly, adjusting the attack angle of the airflow, and the guide protrusion 8 may be disposed on one side of each guide vane 4 close to the outer ring 3, and the guide protrusion 8 may be disposed on each part of the guide vane.
In an alternative embodiment, a noise reduction structure is arranged on the surface of the guide vane 4, the heights of all positions of the noise reduction structure relative to the guide vane 4 are consistent, and the relation between the length a and the width b of the noise reduction structure and the height h of the guide vane 4 relative to the primitive level cross section is that:
h＞a＞b＞0.1h。
in this embodiment, the noise reduction structure is configured to be long, the length of the noise reduction structure is greater than the width of the noise reduction structure, and the relationship between the length a and the width b of the noise reduction structure and the height h at the section of the primitive stage of the guide vane 4 is: h is more than a and more than b is more than 0.1h, so that the length and the width of the noise reduction structure are limited, noise reduction can be better performed according to simulation, and the airflow fluidity is better.
In an alternative embodiment, the distance L between two noise reduction structures adjacent to the same primitive stage of the vane 4 is related to the length a of the noise reduction structures by:
0.1a＜L＜5a。
in the present embodiment, the relationship between the length of the noise reduction structure and the distance L of two adjacent noise reduction structures in the same primitive stage of the guide vane 4 is: the distance between the noise reduction structure and the same primitive level is 0.1a < L < 5a, so that the setting mode of the noise reduction structure under different air quantity and air speed can be met, different using conditions can be met, and the air flow is smoother.
In an alternative embodiment, the relationship between the pitch L1 of the noise reduction structures on adjacent primitive stages of the vane 4 and the distance L between two noise reduction structures adjacent to the same primitive stage of the vane 4 is:
0.1L＜L1＜5L。
in the present embodiment, in adjacent two primitive stages, the relationship between the pitches L1 and L between adjacent two noise reduction structures is: 0.1L < L1 < 5L, thus can change the interval of the adjacent noise reduction structure in the same primitive stage according to the magnitude of the amount of wind, velocity of flow of the air current in the actual use, meet different service conditions, interval L1 between two noise reduction structures can adopt the greater interval when the air current flows greatly, interval L1 can adopt the smaller interval between two noise reduction structures when the air current velocity of flow is smaller.
Optionally, each guide vane 4 is provided with a noise reduction hole 1 and a noise reduction structure, where the noise reduction hole 1 is arranged along the length direction of the guide vane 4, and an overlapping portion of the noise reduction structure and the noise reduction hole 1 is provided on the noise reduction structure, that is, the thickness of the guide vane 4 is uneven along the length direction of each guide vane 4 due to the noise reduction structure, and the thickness of the guide vane is still set at the corresponding position of each primitive stage according to the setting rule of the noise reduction hole 1 on the surface of each noise reduction structure, so that each guide vane can also reduce the air flow through the noise reduction structure in the noise reduction process.
Optionally, the noise reduction structure can be integrally formed with the guide vane 4, and is controlled by a die in the casting process, or can be bonded or welded after the guide vane 4 is manufactured, and then the surface of the guide vane 4 is processed with the noise reduction hole 1, so that the simultaneous noise reduction and noise reduction are realized.
Another objective of the present utility model is to provide an air conditioner external unit, as shown in fig. 3, where the air conditioner external unit provided by the embodiment of the present utility model includes a cabinet 6, a fan, and a noise reduction device 2; wherein, be provided with the fan in the cabinet body 6, noise reduction device 2 sets up in the air intake air outlet or the air outlet department of fan, and cabinet body 6 is connected with noise reduction device 2, and noise reduction device 2 is used for making an uproar to the air current that gets in and out cabinet body 6.
In this embodiment, the air conditioner external unit includes the cabinet body 6 and internal parts, because the internal parts need to exchange heat, the air conditioner external unit is generally provided with the fan 7 and the motor, the motor drives the fan 7 to rotate so as to generate air flow, and the noise reduction device 2 can be arranged at the air inlet end of the fan 7, also can be arranged at the air outlet end of the fan 7, the noise reduction device 2 arranged at the air inlet section can rectify the air flow before entering the fan 7, change the attack angle of the air flow entering the fan 7, and simultaneously can also reduce the noise generated by the fan 7 and the noise generated by the air flow and the guide vane 4, and simultaneously can avoid pneumatic separation, and can also make the working capacity of the fan 7 stronger, improve the heat exchange efficiency, and the noise reduction device 2 arranged at the air outlet side of the fan 7 can reduce the noise and rectify the air blown by the fan 7, change the air outlet blowing angle so that the air flow is smoother, and simultaneously reduces the noise, and the working capacity of the fan 7 has more air flows through the internal parts in unit time, thereby improving the heat exchange efficiency, and the air flow is smoother, and compared with the existing heat exchange cost of the fan 7.
Optionally, the cabinet body 6 is generally made of metal, the cabinet body 6 may be vertically placed, a fan 7 and a noise reduction device 2 are disposed at the top of the cabinet body 6, a through hole is disposed on a side wall of the cabinet body 6 for air flow, the fan 7 at the top may selectively blow air into the cabinet body 6, or blow air in the cabinet body 6, in the process of blowing air in the cabinet body 6, external air flows through the through hole on the side wall of the cabinet body 6 to enter the cabinet body 6 for heat exchange, and then is blown out by the fan 7, the noise reduction device 2 simultaneously performs noise reduction and rectification treatment, so as to complete heat exchange in the cabinet body 6, or when the fan 7 blows air into the cabinet body 6, the noise reduction device 2 simultaneously performs noise reduction and rectification treatment, the air flows into the cabinet body 6 and exchanges heat with internal parts, and then is blown out through the through hole on the side wall of the cabinet body 6, so as to complete primary heat exchange.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (9)
1. A noise reduction device, comprising: noise reducing structures and vanes;
the noise reduction structure is arranged on the guide vane and is used for reducing noise of air flow passing through the guide vane;
the noise reduction structure comprises noise reduction holes;
the noise reduction holes are formed in the guide vanes, the noise reduction holes extend along the thickness direction of the guide vanes, and a plurality of noise reduction holes are distributed along primitive stages of the guide vanes.
2. The noise reducer of claim 1, wherein the diameter d of the noise reduction hole is related to the height h at the same primitive level cross section of the vane by:
0.01h＜d＜0.5h。
3. the noise reducer of claim 2, wherein the pitch I of the noise reduction holes on the same primitive level of the vane is related to the diameter d of the noise reduction holes by:
0.2d＜I＜5d。
4. a noise reduction device according to claim 3, wherein the relation of the pitch I1 of the noise reduction holes on adjacent primitive stages of the guide vane to the pitch I of the noise reduction holes of the same primitive stage is:
0.5I＜I1＜10I。
5. the noise reducer of any of claims 1-4, wherein the noise reducing structure comprises a deflector protrusion or deflector groove;
the noise reduction structure is arranged on the guide vane and extends along the height direction of the guide vane.
6. The noise reducer of claim 5, wherein the length a and width b of the noise reducing structure are related to the height h of the vane at the relative primitive level cross-section as:
h＞a＞b＞0.1h。
7. the noise reducer of claim 5, wherein a distance L between two noise reducing structures adjacent to the same primitive stage of the vane is related to a length a of the noise reducing structures by:
0.1a＜L＜5a。
8. the noise reduction device according to claim 5, wherein a relationship between a pitch L1 of the noise reduction structures on adjacent primitive stages of the vane and a distance L between two of the noise reduction structures adjacent to the same primitive stage of the vane is:
0.1L＜L1＜5L。
9. an air conditioner outdoor unit comprising a cabinet, a fan and a noise reduction device according to any one of claims 1 to 8;
the fan and the noise reduction device are both arranged on the cabinet body, and the noise reduction device is positioned at an air inlet or an air outlet of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223266447.2U CN219415019U (en) | 2022-12-02 | 2022-12-02 | Noise reduction device and air conditioner outdoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223266447.2U CN219415019U (en) | 2022-12-02 | 2022-12-02 | Noise reduction device and air conditioner outdoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219415019U true CN219415019U (en) | 2023-07-25 |
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ID=87208301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223266447.2U Active CN219415019U (en) | 2022-12-02 | 2022-12-02 | Noise reduction device and air conditioner outdoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219415019U (en) |
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2022
- 2022-12-02 CN CN202223266447.2U patent/CN219415019U/en active Active
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