CN110332692B - Outdoor unit air outlet grille and outdoor unit - Google Patents
Outdoor unit air outlet grille and outdoor unit Download PDFInfo
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- CN110332692B CN110332692B CN201910600436.7A CN201910600436A CN110332692B CN 110332692 B CN110332692 B CN 110332692B CN 201910600436 A CN201910600436 A CN 201910600436A CN 110332692 B CN110332692 B CN 110332692B
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- outdoor unit
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- air outlet
- outlet grille
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/082—Grilles, registers or guards
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention provides an outdoor unit air outlet grille and an outdoor unit, the outdoor unit air outlet grille comprises an inner frame, an outer frame and a plurality of annular ribs concentrically arranged between the inner frame and the outer frame, the inner frame and the outer frame are connected with radial ribs, and the radial ribs are arranged on the inner frame and the outer frameThe wind guide surface of the directional ribs is a multi-section torsion surface separated by annular ribs, and the wind inlet angle of each section of the torsion surface is beta1And the air inlet angle beta1The air outlet angle of each section of the torsion surface is beta2Wherein, beta is more than or equal to 0 degree2Is less than or equal to 20 degrees. The outdoor unit comprises the outdoor unit air outlet grille. The invention is suitable for the outdoor unit with small reserved installation space and high-temperature and high-humidity environment, can reduce the impact loss of airflow and improve the air outlet static pressure and air supply distance of the whole machine.
Description
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to an outdoor unit air outlet grille and an outdoor unit.
Background
With the increasingly wide application of the central air conditioner in the home decoration market, in order to save space or beautify decoration, a real estate developer in the home decoration market reserves installation space for an air conditioner outdoor unit to be very small, and even some air conditioner outdoor units are provided with rain sheltering grids. Narrow installation space and rain-proof grid for air condensing units ventilation resistance increases, leads to the amount of wind decay, the return air short circuit appears even, and then influences air condensing units's performance, and along with the increase of air conditioning operating duration, the heat exchanger is dirty stifled, leads to the system resistance increase, reduces the amount of wind of complete machine, and then reduces air conditioning performance.
The air outlet grille in the prior art generally adopts a planar grille structure, and the air inlet angle of the air outlet grille is a constant value and does not change along with the radius, as shown in fig. 3. The existing patent improves the shape of the air outlet grille, and Chinese patent CN201410321470.8 discloses an air conditioner outdoor unit and an air outlet grille thereof, which improves the shape of annular ribs, reduces the loss of the air outlet quantity of the outdoor unit, enhances the heat exchange effect and reduces the noise. Chinese patent CN201710862792.7 discloses an air outlet grille of an air conditioner outdoor unit and an air conditioner outdoor unit, which improves the shape of radial ribs and the air inlet angle of the radial ribs, reduces the loss of rotational kinetic energy, improves the work capacity of a fan, and increases the efficiency of an axial flow fan. Although the above patents improve the shape of the air outlet grille, none of the above patents relate to how to reduce the air flow impact loss, suppress the air supply angle, and improve the air supply pressure and the air supply distance for different air outlet angles of the fan in the fan.
How to optimize the structural shape of fan and air-out grid, reduce the air supply angle, improve the air supply distance, improve the air supply pressure of complete machine, improve user experience, strengthen the competitiveness of product, the pendulum is the problem that awaits solution in the air conditioner field.
Disclosure of Invention
In order to solve the problems, the invention provides an outdoor unit air outlet grille and an outdoor unit, wherein the structure of the air outlet grille is optimized, so that the air supply pressure and the air supply distance of the whole unit are increased, the outdoor unit air outlet grille can adapt to a narrow installation environment and the phenomenon of filth blockage of a heat exchanger, the attenuation of the capacity of the whole unit is reduced, and the comfort of a user is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an outdoor unit air-out grid, includes inside casing, frame, and set up in a plurality of annular ribs between inside casing and the frame, be provided with radial rib between inside casing and the frame, radial rib has the wind-guiding face, the wind-guiding face is the multistage torsional curved surface that annular rib separates, every section the angle of intaking of torsional surface is beta1And the air inlet angle beta1The inner frame is increased to the outer frame and then reduced.
As a further optimization of the invention, the maximum value of the wind inlet angle of the torsion surface is beta 1maxThe wind inlet angle of the torsion surface at the inner frame is beta10Wherein beta is1max–β10The wind inlet angle of the torsion surface at the outer frame is beta at 0-40 degrees11Wherein beta is1max–β11＝0～20°。
As a further optimization of the invention, the wind outlet angle of each section of the torsion surface is beta2Wherein, beta is more than or equal to 0 degree2≤20°
As a further optimization of the invention, the maximum wind inlet angle beta of the torsion surface1At a radius RmaxThe radius of the air outlet grille is R, wherein Rmax/R＝0.5～0.8。
As a further optimization of the invention, the radial height of the torsion surface is H, wherein H is more than or equal to 10mm and less than or equal to 35 mm.
As a further optimization of the invention, the distance between two adjacent torsion surfaces is D, wherein H is more than or equal to 8mm and less than or equal to 20 mm.
An outdoor unit comprises a shell, a fan and an air outlet grille, wherein the air outlet grille is any one of the outdoor unit air outlet grilles.
As a further optimization of the invention, the wind outlet angle at the trailing edge of the fan is beta3Wherein beta is1＝β3。
As a further optimization of the present invention, the rotation direction of the fan is opposite to the inclination direction of the radial ribs from the inner frame to the outer frame.
As a further optimization of the invention, the outer frame is fixed on the housing in the circumferential direction by a plurality of evenly distributed buckles.
As a further optimization of the invention, the top of the outer frame of the air outlet grille is fixedly connected with the casing through bolts.
Compared with the prior art, the invention has the advantages and positive effects that:
1. the outdoor unit air outlet grille is suitable for the outdoor unit with small reserved installation space and in the high-temperature and high-humidity environment.
2. The outdoor unit of the invention is characterized in that the air outlet angle beta of the tail edge at different radiuses of the fan is determined3The air inlet angle of the air guide surface of the grating is designed, so that the air impact loss is reduced, and the air outlet static pressure and the air supply distance of the whole machine are increased.
3. The air outlet angle beta of the torsion surface of the air outlet grille of the outdoor unit of the invention2The reasonable design of the height of the torsion surface of the grille can inhibit the air supply divergence angle and improve the air supply distance; the distance between two adjacent torsion surfaces is reasonably set, the airflow resistance is reduced, and the requirement of finger test is ensuredAnd (5) testing requirements.
4. The outdoor unit air outlet grille is connected with the whole machine through the buckle, so that the assembly efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of an outdoor unit outlet grille according to the present invention;
FIG. 2 is an enlarged view of the portion A of the air outlet grille according to the present invention;
FIG. 3 shows different air outlet grille radiuses R and air inlet angles beta1The relationship curve of (1);
FIG. 4 shows the inlet air angle β of the outlet grille of the outdoor unit of the present invention1And beta2A schematic diagram of (a);
FIG. 5 shows the wind angle β at the trailing edge of the fan3A schematic diagram of (a);
fig. 6 is a schematic right view of an outdoor unit according to an embodiment of the present invention;
FIG. 7 is a diagram showing the relationship between the static pressure and the air volume of the whole machine of different air outlet grille mechanisms;
fig. 8 is a schematic diagram of the characteristics of the overall air supply distance of the existing planar air outlet grille structure;
fig. 9 is a schematic diagram illustrating characteristics of a total blowing distance of an outdoor unit outlet grille according to an embodiment of the present invention.
In the above figures: 1. an outer frame; 2. radial ribs; 21. a twisting surface; 3. an annular rib; 4. an inner frame; 5. buckling; 6. a bolt; 7. a housing.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 3, the outdoor unit air outlet grille of the present invention includes an inner frame 4, an outer frame 1, and a plurality of annular ribs 3 disposed between the inner frame 4 and the outer frame 1, wherein radial ribs 2 are connected between the inner frame 4 and the outer frame 1, an air guide surface of each radial rib 2 is a plurality of sections of torsion surfaces 21 separated by the annular ribs 3, and an air inlet angle of each section of the torsion surfaces 21 is β1And the air inlet angle beta1The inner frame 4 is increased to the outer frame 1 and then reduced, and the included angle between the camber line of the blade-shaped air outlet of the air outlet grille torsion surface 21 and the grille axis is an air outlet angle beta2As shown in fig. 2, the wind outlet angle of the torsion surface 21 is not less than 0 degree2The divergence angle of the whole machine can be inhibited at the angle of less than or equal to 20 degrees.
Because, the wind inlet angle beta of the torsion surface 21 of the wind outlet grille1The air outlet angle beta at different tail edges of the fan3When they are equal, the airflow impact loss is minimal, and as can be seen from the test and CFD simulation (computational fluid dynamics) analysis, the airflow direction is different at different fan radii, as shown in fig. 5, and the wind angle β is the middle area of the fan3Is large; to rest onNear the hub and the edge of the fan, the wind outlet angle beta of the middle area of the fan3Is smaller. I.e. the inlet angle beta of the radial ribs 2 of the outlet grille1Increasing and then decreasing with increasing radius. Therefore, the radial ribs 2 are divided into a plurality of sections of torsion surfaces 21 by the circumferential ribs 3, and each section of torsion surface 21 is arranged according to the air outlet direction beta of the fan radius at the corresponding radius3To set the wind inlet angle beta of the torsion surface 211。
As a preferred embodiment, the inlet air angle β of the torsion surface 211With a parabolic variation, the maximum is located in the middle of the fan radius, decaying to both sides, as shown in fig. 3. Maximum wind inlet angle beta of the torsional plane1At a radius RmaxThe radius of the air outlet grille is R, wherein Rmax0.5-0.8% of/R, preferably Rmaxwhen/R is 0.6, the air inlet angle is beta1And max.
At the same time, the wind inlet angle beta of the torsion surface 211Has a maximum value of beta1maxThe wind inlet angle of the radial ribs 2 at the inner frame 4 is beta10Wherein, β1max–β100 to 40 °, preferably, β1max–β1030 °; the wind inlet angle of the torsion surface 21 at the outer frame 1 is beta11Wherein, β1max–β110 to 20 °, preferably β1max–β1110 deg.. The radial height of the radial ribs 2 is H, wherein H is more than or equal to 10mm and less than or equal to 35 mm; as shown in FIG. 4, the distance between two adjacent torsion surfaces 21 is D, wherein D is more than or equal to 8mm and less than or equal to 20 mm.
In addition, the invention also provides an outdoor unit, which comprises a shell 7, a fan and an air outlet grille, wherein the air outlet grille is the outdoor unit air outlet grille of any one of the embodiments; as shown in FIG. 5, the wind exit angle at the trailing edge of the fan is β3Wherein beta is1＝β3。
As a preferred embodiment, the rotation direction of the fan is opposite to the inclination direction of the radial ribs 2 from the inner frame 4 to the outer frame 1, so as to facilitate assembly and improve assembly efficiency, as shown in fig. 6, the circumferential direction of the outer frame 1 is fixed on the housing 7 by a plurality of evenly distributed buckles 5; the outer frame 1 of the air outlet grille is fixedly connected with the shell 7 only through one bolt 6 at the top, and the air outlet grille is convenient and fast to use. Of course, the bolts 6 may be installed in plural numbers uniformly in the circumferential direction of the housing 7.
The overall static pressure characteristic of the outdoor unit of the embodiment is obviously improved, as shown in fig. 7, when the static pressure is 30Pa compared with the existing plane air outlet grille structure, the overall air volume of the outdoor unit of the embodiment is improved by 21.6% compared with the existing outdoor unit, and as can be seen by comparing fig. 8 and 9, by adopting the air outlet grille structure of the invention, the overall air supply divergence angle is obviously smaller, and the air supply distance is increased.
The air outlet grille structure can be expanded to the design of the top air outlet fan type fan, and the specific expansion mode of the embodiment is not repeated in the invention.
Of course, there are many schemes for improving the attenuation of the whole machine capability in a narrow space, for example, reducing the size of the frame of the whole machine or increasing the installation space of the whole machine, and reducing the size of the frame of the whole machine will result in the reduction of the whole machine capability, and on the premise of not reducing the whole machine capability, the difficulty in reducing the size of the whole machine is high.
According to the invention, through reasonably designing the structure of the air outlet grille, the air flow impact loss is reduced, the air supply angle is inhibited, the air supply pressure and the air supply distance are improved, and the air inlet angle beta of the radial ribs 2 is determined1The air outlet angle beta at different tail edges of the fan3The relationship of (1) and the reasonable layout of the wind inlet angle beta1Reducing the air flow impact loss and the wind outlet angle beta of the radial ribs2The improvement can inhibit the divergence angle of the whole machine, reasonably set the distance between two adjacent radial ribs, reduce the airflow resistance and simultaneously ensure that the test finger test requirements are met.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides an outdoor machine air-out grid, includes inside casing, frame, and set up in a plurality of annular ribs between inside casing and the frame, the radial rib of connection of inside casing and frame, radial rib has wind-guiding surface, its characterized in that: the wind guide surface is a multi-section torsion surface separated by the annular ribs on the radial ribs, and the wind inlet angle of each section of the torsion surface is beta1And the air inlet angle beta1The inner frame is increased to the outer frame and then reduced.
2. An outdoor unit outlet grille according to claim 1, wherein: the maximum value of the wind inlet angle of the torsion surface is beta1maxThe wind inlet angle of the torsion surface at the inner frame is beta10Wherein, β1max–β10The wind inlet angle of the torsion surface at the outer frame is beta at 0-40 degrees11Wherein, β1max–β11＝0～20°。
3. An outdoor unit outlet grille according to claim 1, wherein: the wind outlet angle of each section of the torsion surface is beta2Wherein, beta is more than or equal to 0 degree2≤20°。
4. An outdoor unit outlet grille according to claim 1, wherein: maximum wind inlet angle beta of the torsion surface1At a radius RmaxThe radius of the air outlet grille is R, wherein Rmax/R＝0.5～0.8。
5. An outdoor unit outlet grille according to claim 1, wherein: the radial height of the torsion surface is H, and H is more than or equal to 10mm and less than or equal to 35 mm.
6. An outdoor unit outlet grille according to claim 1, wherein: the distance between two adjacent torsion surfaces is D, wherein D is more than or equal to 8mm and less than or equal to 20 mm.
7. The utility model provides an outdoor unit, includes casing, fan and air-out grid, its characterized in that: the air outlet grille is the outdoor unit air outlet grille of any one of claims 1 to 6.
8. The outdoor unit of claim 7, wherein: the wind outlet angle at the tail edge of the fan is beta3Wherein beta is1＝β3。
9. The outdoor unit of claim 7, wherein: the rotation direction of the fan is opposite to the inclination direction of the radial ribs from the inner frame to the outer frame.
10. The outdoor unit of claim 7, wherein: the circumference of frame is fixed on the casing through a plurality of evenly distributed's buckle, the top of frame passes through bolt and casing fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600436.7A CN110332692B (en) | 2019-07-04 | 2019-07-04 | Outdoor unit air outlet grille and outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600436.7A CN110332692B (en) | 2019-07-04 | 2019-07-04 | Outdoor unit air outlet grille and outdoor unit |
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| Publication Number | Publication Date |
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| CN110332692A CN110332692A (en) | 2019-10-15 |
| CN110332692B true CN110332692B (en) | 2021-05-25 |
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| CN201910600436.7A Active CN110332692B (en) | 2019-07-04 | 2019-07-04 | Outdoor unit air outlet grille and outdoor unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766055B (en) * | 2017-02-17 | 2019-08-13 | 珠海格力电器股份有限公司 | A kind of wind-guiding grate, air inlet faceplate and air conditioner |
| CN113834137B (en) * | 2021-09-24 | 2022-12-13 | 珠海格力电器股份有限公司 | Air outlet grille, air conditioner outdoor unit and air conditioner |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977311A (en) * | 1974-11-22 | 1976-08-31 | Felter John V | Louver fan assembly |
| JPH06257795A (en) * | 1993-03-02 | 1994-09-16 | Matsushita Electric Ind Co Ltd | Front grill for air conditioner outdoor device |
| CN104019500A (en) * | 2014-06-27 | 2014-09-03 | 珠海格力电器股份有限公司 | Air conditioning outdoor unit and air outlet grid thereof |
| CN104048369B (en) * | 2014-07-04 | 2016-10-05 | 珠海格力电器股份有限公司 | Air-conditioner outdoor unit and air outlet grate thereof |
| CN104501381B (en) * | 2014-12-02 | 2017-06-16 | 广东美的制冷设备有限公司 | Air-conditioner outdoor unit and its air outlet grate |
| CN107525249B (en) * | 2017-09-20 | 2018-09-04 | Tcl空调器(中山)有限公司 | Air-conditioner outdoor unit air outlet grate and air-conditioner outdoor unit |
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