CN216244623U - Flow guide ring and air conditioner - Google Patents
Flow guide ring and air conditioner Download PDFInfo
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- CN216244623U CN216244623U CN202121916489.9U CN202121916489U CN216244623U CN 216244623 U CN216244623 U CN 216244623U CN 202121916489 U CN202121916489 U CN 202121916489U CN 216244623 U CN216244623 U CN 216244623U
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Abstract
The application relates to a flow guide ring and an air conditioner. The guide ring comprises an inlet arc channel, a guide straight channel and an outlet inclined channel which are connected in sequence, wherein the inlet arc channel, the guide straight channel and the outlet inclined channel have the same axis; along the direction from the inlet arc channel to the axis of the outlet inclined channel, the variation trend of the radius of the axis of the inlet arc channel is monotonically decreased according to the preset curvature; the radius of the axis of the flow guide straight channel is not changed; the variation trend of the axial center radius of the outlet chute is increased linearly. Because the change trend of the axis radius of the inlet arc channel is monotonically decreased according to the preset curvature, the entering air flow has a transitional process, the sudden change of the air flow speed is relieved, the air flow impact is reduced, and the flow field distortion is weakened; the diversion straight road with unchanged radius of the axis weakens the tip vortex and also limits the development of turbulent flow; the change trend of the axial center radius of the outlet chute is linearly increased, partial dynamic pressure of airflow is converted into static pressure, and the air speed is reduced. The three act on the air current that gets into the water conservancy diversion circle jointly, reduce the exhaust noise of fan.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to a flow guide ring and an air conditioner.
Background
The air conditioner comprises an outdoor unit and an indoor unit. Axial flow fan blades and semi-open type guide rings surrounding the peripheries of the fan blades are commonly used in outdoor unit fan systems. When the air conditioner works, the axial flow fan blades rotate, and the flow guide ring is fixed on the outdoor unit structure and keeps static. The airflow generated by the axial flow fan blade can periodically impact the inner circumferential surface of the flow guide ring, so that the periodic pressure pulsation of the inner circumferential surface of the flow guide ring is caused, and discrete noise is generated; blade top gaps exist between blade tops of the axial flow fan blades and the inner surface of the flow guide ring, airflow flows to a suction surface of the axial flow fan blades from a pressure surface of the axial flow fan blades through the blade top gaps, blade top leakage is caused, the air quantity of the fan is reduced, blade top leakage vortex and blade tip vortex are caused, and vortex noise is generated. The existence of discrete noise and vortex noise when the outdoor unit works enables the use experience of users to be reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems in the related art, the present application provides a flow guide ring capable of reducing exhaust noise.
This application first aspect provides a water conservancy diversion circle, includes:
the inlet arc channel, the flow guide straight channel and the outlet inclined channel;
the inlet arc channel, the flow guide straight channel and the outlet inclined channel have the same axle center;
along the axial direction from the inlet arc channel to the outlet inclined channel,
the variation trend of the axis radius of the inlet arc channel is monotonically decreased according to a preset curvature;
the radius of the axis of the flow guide straight channel is unchanged;
the variation trend of the axial center radius of the outlet chute is increased linearly.
In one embodiment, the axial lengths of the inlet arc, flow-directing straight, and exit chute are in the relationship:
H1:H2:H3＝8:10:7,H1+H2+H3＝H；
the H epsilon (80mm, 100 mm);
wherein, H1 is the axial length of the inlet arc channel, H2 is the axial length of the flow guide straight channel, H3 is the axial length of the outlet chute, and H is the axial total length of the flow guide ring.
In one embodiment, the inlet arc is tangentially connected to the flow-guiding straight channel;
the preset curvature is a fixed value, and the value range of the fixed value is (1/40, 1/30).
In one embodiment, the axial radius R e (282mm, 286mm) of the flow-guiding straight road.
In one embodiment, the slope line of the exit chute forms an angle A e (6 °, 10 °) with the axis of the flow-directing straight;
the slope line characterizes a direction of change of slope of the inner side of the exit chute.
In one embodiment, the first opening end of the inlet arc channel is provided with a pair of symmetrical notches, and the notches are matched with the assembly position of the guide ring;
the first opening end is the end of the inlet arc channel far away from the flow guide straight channel.
In one embodiment, the inlet arc, the flow-directing straight, and the exit chute are of equal thickness.
In one embodiment, the deflector ring further comprises a connecting ring connected to the second open end of the exit chute;
the inner diameter of the connecting circular ring is equal to the maximum axial center radius of the outlet chute;
the center of the connecting ring is on the axis of the flow guide straight channel;
the plane of the connecting circular ring is vertical to the axis of the flow guide straight channel;
the second opening end is the end of the outlet chute far away from the flow guide straight channel.
In one embodiment, the outer diameter of the connecting ring is equal to the maximum outer diameter of the inlet arc.
The second aspect of the present application provides an air conditioner, comprising the deflector ring.
The technical scheme provided by the application can comprise the following beneficial effects:
the guide ring provided by the scheme is provided with an inlet arc channel, a guide straight channel and an outlet inclined channel, wherein the inlet arc channel, the guide straight channel and the outlet inclined channel have the same axis; along the direction from the inlet arc channel to the axis of the outlet inclined channel, the variation trend of the radius of the axis of the inlet arc channel is monotonically decreased according to the preset curvature; the radius of the axis of the flow guide straight channel is not changed; the variation trend of the axle center radius of the outlet inclined channel is linearly increased, one end of the flow guide straight channel is connected with the smaller end of the inlet arc channel, and the other end of the flow guide straight channel is connected with the small-opening end of the outlet inclined channel. The airflow flows into the flow guide straight channel from the larger end to the smaller end of the inlet arc channel under the action of the fan blades, then flows to the outlet inclined channel, flows to the large-opening end from the small-opening end of the outlet inclined channel, and finally flows out of the fan. Because the change trend of the axis radius of the inlet arc channel is monotonically decreased according to the preset curvature, the entering air flow has a transitional process, the sudden change of the air flow speed can be alleviated, the air flow impact is reduced, and the flow field distortion is weakened; the diversion straight road with unchanged radius of the axis weakens the tip vortex and simultaneously limits the development of turbulent flow; the change trend of the axial center radius of the outlet chute is linearly increased, partial dynamic pressure of airflow is converted into static pressure, and the air speed is reduced. The three components jointly act on the air flow entering the flow guide ring, and the exhaust noise of the fan is reduced.
The application provides a water conservancy diversion circle, its import arc is said and can also avoid the indiscriminate mobility loss that causes of air current flocculation, and the air current that the water conservancy diversion is directly said and can also block the fan blade pressure surface is revealed to improve the amount of wind.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application, as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.
Fig. 1 is a schematic structural diagram of a flow guide ring according to an embodiment of the present application;
FIG. 2 is a vertical cross-sectional view of a baffle shown in an embodiment of the present application;
FIG. 3 is a cross-sectional view of a baffle shown in an embodiment of the present application;
FIG. 4 is a partial cross-sectional view of a deflector ring according to an embodiment of the present application;
fig. 5 is a cross-sectional view of an outdoor unit of an air conditioner according to an embodiment of the present disclosure.
Detailed Description
Preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Example one
The present embodiment provides a flow guiding ring, as shown in fig. 1 to 3, the flow guiding ring in the present embodiment includes an inlet arc channel 10, a flow guiding straight channel 20 and an outlet chute 30; the inlet arc channel, the flow guide straight channel and the outlet inclined channel have the same axis and are arranged along the axis direction from the inlet arc channel to the outlet inclined channel; the axis radius R of the flow guide straight channel is unchanged, the flow guide straight channel is of a straight cylinder structure, the variation trend of the axis radius R1 of the inlet arc channel 10 is monotonically decreased according to the preset curvature, and the smaller end 11 of the flow guide straight channel is connected with one end of the flow guide straight channel; the axial radius R2 of the outlet chute 30 increases linearly, and the small end 31 is connected with the other end of the flow guide straight channel.
It should be noted that the radius of the axis, i.e. the shortest distance from the axis to the inner wall of the flow guiding ring, is the central axis 60 of the flow guiding ring; r is a constant value, and R1 and R2 are a series of values. The preset curvature is used for determining the arc shape of the inlet arc, and the arc can be determined by one curvature value or be composed of a plurality of sections of curves with different curvatures, namely the preset curvature can be one value or be a combination of a plurality of curvature values. The inlet arc channel can be ensured to be smooth according to the arc shape determined by the preset curvature. The variation trend of the axial radius of the inlet arc channel is monotonically decreased according to the preset curvature, namely a connecting line of coordinate points formed by R1 in a two-dimensional coordinate system is a smooth arc line. In this and the following embodiments, the circular path is circular, i.e. the port faces of the inlet arc path and the outlet chute are circular. The guide straight channel, the inlet arc channel and the outlet inclined channel are all provided with the same axle center, namely the axle center radius of the smaller end of the inlet inclined channel and the axle center radius of the small opening end of the outlet inclined channel are equal to the axle center radius of the guide straight channel, and the circle centers of the smaller end, the small opening end and the port surface of the guide straight channel are collinear.
The flow guide ring provided by the embodiment forms a pipeline through the arrangement, one end of the pipeline is an inlet arc channel, the middle of the pipeline is a flow guide straight channel, the other end of the pipeline is an outlet inclined channel, airflow flows through the flow guide straight channel after flowing in from the inlet arc channel under the action of the fan blades and finally flows out of the outlet inclined channel, the caliber of the pipeline is slowly reduced from the inlet arc channel to the outlet inclined channel according to an arc rule, the caliber keeps a certain distance after being reduced to a certain degree, and then the caliber is linearly increased. The inlet arc channel is a circular channel which gradually shrinks from the inlet, the variation trend of the axis radius of the inlet arc channel is monotonically decreased according to the preset curvature, the air inlet speed of the fan can have a transitional process, the abrupt change of the air inlet speed is relieved, the air impact is reduced, and the flow loss and the flow field distortion caused by air inlet disorder are avoided and weakened; the guide straight channel is a main body of the guide ring, the radius of the axis of the guide straight channel is a straight cylindrical annular channel with the same section radius, and the guide straight channel can play a role in blocking airflow leakage of a pressure surface of a fan blade, weakening blade tip vortex and limiting the development of turbulent flow; the change trend of the axis radius of the outlet chute is linearly increased and is a circular channel gradually enlarged towards the outlet, the line shape of the vertical section of the outlet chute is an oblique line, partial dynamic pressure can be converted into static pressure, the static pressure efficiency of the fan is improved, the outlet air speed is reduced, and the exhaust noise of the fan is reduced.
Preferably, the predetermined curvature of the flow guiding ring in the embodiments and the following embodiments is a fixed value, that is, the section arc of the inlet arc is an arc, because when the arc is an arc, the curvature of the inner side surface of the inlet arc is equal, the speed of the inlet airflow can be further relaxed, the airflow impact is reduced, and the noise reduction effect is better. The optimal value range of the preset curvature is (1/40, 1/30) obtained through simulation and experiments, namely the optimal value range of the arc radius r is 30-40 mm.
Example two
This implementation provides a water conservancy diversion circle, compares with last embodiment, and this embodiment further carries out following design to the size of water conservancy diversion circle: as shown in fig. 1, 2 and 4, H1 is the axial length of the inlet arc channel, H2 is the axial length of the flow guide straight channel, H3 is the axial length of the outlet chute, H is the axial total length of the flow guide ring, R is the axial center radius of the flow guide straight channel, a is the included angle formed by the slope line of the outlet chute and the axial center line of the flow guide straight channel, the slope line represents the slope change direction of the inner side surface of the outlet chute, and the slope line can also be understood as the connection line of the points of the circle of the maximum axial center radius of the outlet chute and the circle of the minimum axial center radius on the same angle. The axial direction is the extension direction of the straight line of the circle center connecting line of the two end ports of the straight cylinder structure, and the axial length is the projection length projected on the straight line of the circle center connecting line. The simulation shows that when H1: H2: H3 is 8:10:7, H belongs to (80mm, 100mm), R belongs to (282mm, 286mm) and A belongs to (6 degrees and 10 degrees), the air flow guiding ring can increase the air outlet volume, improve the heat exchange performance of the air conditioner and improve the efficiency of the fan; the guide and regulation of the air flow are realized through the guide ring, the separation and the straightening flow field can be inhibited, and the aerodynamic noise of the fan is reduced. The test compares the air quantity and the noise parameter of the original guide ring and the guide ring matched with the whole system, compared with the original guide ring, the noise is reduced by about 0.5dB under the same air quantity, the air quantity is increased by about 50m3/h under the same noise, and the test data is as follows:
preferably, the thicknesses of the inlet arc channel, the flow guide straight channel and the outlet inclined channel are designed to be equal for the convenience of processing.
Specifically, in order to adapt to the installation position of the guide ring, a pair of symmetrical notches 12 are arranged at the first opening end of the inlet arc channel, the size of each notch 12 is matched with the size of the assembly position of the guide ring, the notches are used for meeting the installation size, preventing the guide ring from contacting or extruding with a middle partition plate or a heat exchanger, and playing a certain role in increasing the inlet area of the fan blade; the first opening end is the end of the inlet arc channel far away from the flow guide straight channel. Meanwhile, a connecting ring 40 is arranged at the second opening end of the outlet chute for connecting and fixing the guide ring with the air conditioner external unit; the inner diameter of the connecting ring 40 is equal to the maximum axial radius of the outlet inclined channel, the center of the connecting ring 40 is on the axial line of the flow guide straight channel, the plane of the connecting ring is vertical to the axial line of the flow guide straight channel, the second opening end is the end of the outlet inclined channel far away from the flow guide straight channel, and the outer diameter of the connecting ring is equal to the maximum outer diameter of the inlet arc channel.
EXAMPLE III
The present embodiment provides an air conditioner, and the deflector ring adopted by the air conditioner is any one of the deflector rings described in the above embodiments. As shown in the cross-sectional view of the air conditioner outdoor unit in fig. 5, the air conditioner outdoor unit includes a casing 51, a heat exchanger 52, a motor bracket 53, a middle partition plate 54, a heat sink 55, a fan blade 56, a guide ring and a grid 57, wherein the casing is used as a framework for mounting the whole unit to form the outline of a fan flow channel; the heat exchanger is a place for exchanging heat between a refrigerant and air; the motor support is a mounting and supporting part of the motor and has certain blocking influence on the airflow of the whole flow passage; the middle partition plate separates a fan flow passage from components such as a control plate, a compressor, a pipeline and the like to have a certain wind guide function; the radiating fins radiate heat and cool the control panel, and certain blocking influence is exerted on airflow flowing in the flow channel; the fan blade is a component for pushing airflow to flow; the guide ring is arranged around the fan blade, only covers one part of the fan blade, namely belongs to a semi-closed guide ring, and assists the fan blade to do work on the airflow; the grid has the rectification effect and can block the air outlet to a certain extent. The guide ring described in the embodiment is adopted to moderate the wind speed of the wind inlet of the fan blade, block the leakage of the wind outlet on the blade surface, limit the development of the tip vortex, reduce the wind speed at the outlet, improve the wind outlet amount of the fan and reduce the exhaust noise.
The aspects of the present application have been described in detail hereinabove with reference to the accompanying drawings. In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments. Those skilled in the art should also appreciate that the acts and modules referred to in the specification are not necessarily required in the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application may be sequentially adjusted, combined, and deleted according to actual needs, and the modules in the device of the embodiment of the present application may be combined, divided, and deleted according to actual needs.
Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A flow directing collar, comprising:
the inlet arc channel, the flow guide straight channel and the outlet inclined channel are connected in sequence;
the inlet arc channel, the flow guide straight channel and the outlet inclined channel have the same axle center;
along the axial direction from the inlet arc channel to the outlet inclined channel,
the variation trend of the axis radius of the inlet arc channel is monotonically decreased according to a preset curvature;
the radius of the axis of the flow guide straight channel is unchanged;
the variation trend of the axial center radius of the outlet chute is increased linearly.
2. A flow-guiding ring as claimed in claim 1, wherein:
the axial lengths of the inlet arc channel, the flow guide straight channel and the outlet inclined channel are in the following relation:
H1:H2:H3＝8:10:7,H1+H2+H3＝H；
the H epsilon (80mm, 100 mm);
wherein, H1 is the axial length of the inlet arc channel, H2 is the axial length of the flow guide straight channel, H3 is the axial length of the outlet chute, and H is the axial total length of the flow guide ring.
3. A flow-guiding ring as claimed in claim 1 or 2, wherein:
the inlet arc channel is tangentially connected with the flow guide straight channel;
the preset curvature is a fixed value, and the value range of the fixed value is (1/40, 1/30).
4. A flow-guiding ring as claimed in claim 1, wherein:
and the axis radius R epsilon of the flow guide straight channel is 282mm and 286 mm.
5. A flow-guiding ring as claimed in claim 1, wherein:
an included angle A formed by a slope line of the outlet chute and the axial lead of the flow guide straight channel belongs to (6 degrees, 10 degrees);
the slope line characterizes a direction of change of slope of the inner side of the exit chute.
6. A flow-guiding ring as claimed in claim 1, wherein:
a pair of symmetrical notches are formed in the first opening end of the inlet arc channel, and the notches are matched with the assembly position of the guide ring;
the first opening end is the end of the inlet arc channel far away from the flow guide straight channel.
7. A flow-guiding ring as claimed in claim 1, wherein:
the thicknesses of the inlet arc channel, the flow guide straight channel and the outlet inclined channel are equal.
8. The baffle of claim 1, further comprising:
a connecting ring connected with the second open end of the exit chute;
the inner diameter of the connecting circular ring is equal to the maximum axial center radius of the outlet chute;
the center of the connecting ring is on the axis of the flow guide straight channel;
the plane of the connecting circular ring is vertical to the axial lead of the flow guide straight road;
the second opening end is the end of the outlet chute far away from the flow guide straight channel.
9. The deflector ring of claim 8, wherein:
the outer diameter of the connecting ring is equal to the maximum outer diameter of the inlet arc channel.
10. An air conditioner, characterized in that: the air conditioner comprises the guide ring of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121916489.9U CN216244623U (en) | 2021-08-16 | 2021-08-16 | Flow guide ring and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121916489.9U CN216244623U (en) | 2021-08-16 | 2021-08-16 | Flow guide ring and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN216244623U true CN216244623U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121916489.9U Active CN216244623U (en) | 2021-08-16 | 2021-08-16 | Flow guide ring and air conditioner |
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| CN (1) | CN216244623U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026023A (en) * | 2023-01-16 | 2023-04-28 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and air conditioner |
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2021
- 2021-08-16 CN CN202121916489.9U patent/CN216244623U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116026023A (en) * | 2023-01-16 | 2023-04-28 | 珠海格力电器股份有限公司 | Air conditioner outdoor unit and air conditioner |
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