CN112577104A

CN112577104A - Air conditioner

Info

Publication number: CN112577104A
Application number: CN201910927154.8A
Authority: CN
Inventors: 张允峰; 高玉泽; 丛辉
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-03-30

Abstract

The invention provides an air conditioner, which comprises an air outlet grille, wherein the air outlet grille comprises a plurality of coaxially arranged annular grilles which are connected through a plurality of radial grille strips arranged along the radial direction of the annular grilles, each radial grille strip comprises a flow guide section for guiding airflow blown out by a fan and a rectifying section for rectifying the guided airflow so that the airflow flows out in a position deviated to the center of the fan, and the flow guide section is connected with the rectifying section; the annular grill includes a first annular grill whose height gradually increases in a radial direction from a center of the fan to an outer edge of the fan. The air conditioner can effectively improve the blowing air speed of the fan of the air conditioner, reduce the divergence angle of the blowing air, greatly reduce the backflow amount of the blowing air and ensure the performance of the air conditioner.

Description

Air conditioner

Technical Field

The present invention relates to an improvement of air conditioner structure.

Background

In order to reduce the safety risk of installation and subsequent use of the air conditioning equipment and meet the requirements of attractiveness of the outer facade of a building and the like, a split air conditioner is taken as an example for explanation, and most of buildings do not allow the air conditioning outdoor unit to be directly hung on the outer wall of the building. However, in the installation mode of the air conditioner outdoor unit, due to the size of the space of the installation platform, the form of the louver and the shielding area thereof, the influence of factors such as the air outlet field of the air conditioner outdoor unit, the weather environment and the like, the hot air blown by the fan of the air conditioner outdoor unit is difficult to effectively radiate during the refrigeration operation in summer, but most of the hot air is directly absorbed and returned to the heat exchanger of the air conditioner outdoor unit, therefore, as shown in fig. 1, taking the cooling mode as an example to explain, when the air conditioner is installed in a building groove, the angle of the air blown out from the air outlet grille is relatively divergent, the air will blow onto the side wall of the building groove and reflect under the action of the side wall, and the hot air is sucked into the air inlet side of the heat exchanger, so that the heat exchange performance of the heat exchanger is reduced, thereby reducing the cooling effect. This problem has become a major bottleneck problem to be solved by the air conditioner.

Disclosure of Invention

The invention provides a novel air conditioner which can effectively improve the blowing air speed of a fan of the air conditioner, reduce the divergence angle of the blowing air, greatly reduce the backflow amount of the blowing air and improve the service performance of the air conditioner. .

In order to solve the technical problems, the air outlet grille provided by the invention is realized by adopting the following technical scheme:

an air conditioner comprises a plurality of coaxially arranged annular grids which are connected through a plurality of radial grid strips arranged along the radial direction of the annular grids, wherein each radial grid strip comprises a flow guide section used for guiding airflow blown out by a fan and a rectifying section used for rectifying the guided airflow to enable the airflow to flow out in a position deviated to the center of the fan, and the flow guide section is connected with the rectifying section;

the annular grill includes a first annular grill gradually increasing in height in a direction from a center of the fan to an outer edge of the fan.

The invention also comprises the following additional technical features:

further, the height of the plurality of radial grill bars increases gradually from the center of the fan to the outer edge of the fan.

Furthermore, the first annular grid positioned at the outermost layer is attached to the side wall of the air duct used for guiding air to the fan.

Furthermore, an included angle is formed between the flow guide section and the rectifying section, and the included angle is 150 degrees and 170 degrees.

Further, the flow guide section is in smooth transition connection with the rectifying section.

Furthermore, the flow guide section is close to the air outlet of the fan and is parallel to the screwing-out direction of the air flow of the fan.

Furthermore, an included angle is formed between the flow guide section and the side face of the fan blade adjacent to the flow guide section, and the included angle is 80-120 degrees.

Further, the annular grating also comprises a plurality of second annular gratings, each second annular grating is arranged between every two adjacent 2 first annular gratings, the heights of the second annular gratings are the same, and the height of each second annular grating is smaller than that of the first annular grating with the smallest height.

Furthermore, a plurality of diversion channels with different heights for diversion of wind blown by the fan are formed between the adjacent radial grids, and the heights of the diversion channels gradually increase from the center of the fan to the edge of the fan.

The air outlet grille is fixed on the panel frame, and forms a communication channel for guiding air flow in the air duct out to an external space through the matching and attachment of the first annular grille on the outermost ring and the side wall of the air duct and the air duct.

The invention has the following advantages and positive effects:

according to the air outlet grille in the air conditioner, the radial grille is arranged into the flow guide section and the rectifying section, the air blown out by the fan is guided by the flow guide section firstly, so that the loss of the blown wind energy is reduced, then the air blown out by the fan is rectified by the rectifying section and is blown out in a direction deviated to the axis direction of the fan, the divergence angle of the air is reduced, and the air is blown out from a direction close to the axis of the fan as far as possible, so that the problem that the air is folded and reflows due to the fact that the air is blown onto the side wall of the groove in a building due to the large divergence angle of the air can be effectively avoided, and the problem that the refrigerating or heating performance of the.

The circumferential grille in the air conditioner has the advantages that the height of the circumferential grille gradually increases along the radial direction from the center of the fan to the edge of the fan, the air outlet grille is divided into the plurality of flow guide channels through the circumferential grille, air blown out by the fan at different positions is guided through the plurality of flow guide channels, the problem of mixed flow is avoided, the air speed of an area with large air quantity is further ensured, the integral air outlet speed is further relatively improved, the situation that surrounding air flows back into the air conditioner is avoided, and the problem of backflow is avoided.

Drawings

FIG. 1 is a schematic view of an air outlet grille assembly of an air conditioner according to the prior art;

FIG. 2 is a first schematic structural diagram of an air outlet grille of an air conditioner according to the present invention;

FIG. 3 is an enlarged view of FIG. 2 at B

FIG. 4 is a second schematic structural view of an air outlet grille of an air conditioner according to the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a cross-sectional view of the cross-section A-A of FIG. 4 in another cross-section;

FIG. 7 is a schematic view of a structure of a radial grille strip and a fan in an embodiment of an air outlet grille of an air conditioner according to the present invention;

fig. 8 is a schematic view of a matching structure of an annular grille and an air duct in an embodiment of an air outlet grille of an air conditioner of the present invention.

Wherein, the annular grating-100; a first annular grid-110; a second annular grid-120; radial grid-200; a flow guide section-210; a rectifying section-220; a fan-300; a fan blade-310; a flow guide channel-400; panel frame-500; -510 of an air duct; communicating with the channel-700.

Detailed Description

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and the detailed description, and the present invention provides an embodiment of an air conditioner, which is shown in fig. 2 to 8 and includes an air outlet grille, which may be a square grille or a circular grille, and is not limited herein. The air outlet grille correspondingly comprises a plurality of coaxially arranged annular grilles 100, the annular grilles 100 have different diameters and are sequentially sleeved from inside to outside, which are connected by a plurality of radial grill bars 200 arranged in a radial direction of the ring grill 100, and in particular, the radial grill bars 200 are provided in plurality, a plurality of radial grid bars 200 are arranged along the circumferential direction of the annular grid 100, and the adjacent radial grid bars 200 can be arranged at equal intervals or non-equal intervals, without being limited thereto, the radial grill bar 200 includes a guide section 210 for guiding the airflow blown by the fan 300 and a rectifying section 220 for rectifying the guided airflow so that the airflow is deflected toward the center of the fan 300, the flow guide section 210 is connected with the rectifying section 220, and the radial grid bars 200 can guide wind blown out by the fan 300 firstly through the arranged flow guide section 210 to guide the wind, so that the loss of the wind blowing energy is reduced; then, the wind guided by the guide section 210 is rectified by the rectifying section 220, and the blowing direction of the wind is changed, so that the wind is blown out at a position deviated from the center of the fan 300, and the divergence angle of the air blown out by the air conditioner is reduced; the return flow of the blown air is reduced, and the air return flow is reduced, so that the refrigerating or heating performance of the air conditioner is correspondingly improved.

The annular grille 100 comprises a first annular grille 110, the first annular grille 110 is provided with a plurality of first annular grilles, the air outlet grille is divided into a plurality of flow guide channels 400 through the first annular grille 110, the air outlet area of the blades of the fan 300 is appropriately divided through the plurality of flow guide channels 400, according to the wind field characteristic that the air quantity of the fan 300 gradually increases from the center to the outer edge, the height of the first annular grille 110 is gradually increased along the radial direction from the center of the fan 300 to the outer edge of the fan 300, so that the air blown out by the fan 300 at different positions is guided in a partitioning mode, the increased first annular grille 100 is matched with the area with large air quantity for reinforced guidance, the mixed flow problem is avoided, the air speed of the area with large air quantity is further ensured, the integral air outlet speed is further relatively increased, the air supply distance is increased, and the backflow of surrounding air flow into the air conditioner is avoided, the generation of backflow problem is avoided.

If all the annular grilles 100 with the same height are arranged, which is equivalent to only one large air outlet pipeline, all the air flows out from the channel with one height, the air blown out from the center of the fan 300 and the air blown out from the edge of the fan 300 can generate mutual mixed flow when flowing out, and the speed of the outlet air is reduced, in this embodiment, a plurality of diversion channels 400 with different heights corresponding to the center to the outer edge of the fan 300 are formed through the first annular grilles 110 with different heights, different outlet air positions of the fan 300 can be blown out through different diversion channels 400, for example, the air blown out from the center of the fan 300 can be blown out from the diversion channel 400 corresponding to the center position, the air at the outer edge of the fan 300 can be guided through the diversion channel 400 with a longer length corresponding to the position and then blown out, so that the problem of mixed flow of the air cannot be generated, and the air speed of the area with large air volume and large air speed cannot be reduced due to, thereby relatively improving the whole wind speed and reducing the air outlet backflow amount.

Meanwhile, because the air output amount of the corresponding position of the center of the fan 300 is less, only a shorter diversion channel 400 is needed to be arranged, the air output amount is larger near the edge, therefore, the diversion channel 400 gradually becomes higher from the center to the outer edge, and the air output performance of the fan 300 is matched, so that the production cost is saved.

Furthermore, the heights of the radial grid bars 200 are gradually increased along the direction from the center of the fan 300 to the outer edge of the fan 300, the heights of the radial grid bars 200 are gradually increased from the center of the fan 300 to the outer edge of the fan 300, so that the heights of the radial grid bars 200 are changed in an inclined manner, and the air volume of the fan 300 close to the outer edge is larger, so that the air volume of the radial grid bars 200 is matched with that of the fan 300, good guiding effect on air is realized, the grid bars in the area with large air volume are high, the grid bars in the place with small air volume are short, and the cost of parts is effectively reduced under the condition that the performance is ensured.

As an implementation manner of the flow guiding section 210 and the rectifying section 220 in this embodiment, it is: an included angle is formed between the flow guide section 210 and the rectifying section 220, and the included angle is 150 degrees and 170 degrees. Through making the contained angle that has certain angle between water conservancy diversion section 210 and the rectification section 220, can make rectification section 220 carry out effectual change to the wind direction of the wind that water conservancy diversion section 210 blew out, and then realize changing the change of the angle that the wind blew out, reduce dispersing of wind to reduce the air-out backward flow.

Another embodiment of the flow guiding section 210 and the flow rectifying section 220 in this embodiment is as follows: the flow guiding section 210 is in smooth transition connection with the rectifying section 220.

In order to ensure that the direction of the airflow blown out from the fan 300 is kept unchanged, so as to reduce the wind energy loss of the wind blown out from the fan 300 as much as possible, the flow guide section 210 is close to the wind outlet of the fan 300 and is substantially parallel to the unscrewing direction of the airflow of the fan 300.

In order to ensure that the flow guiding section 210 is substantially parallel to the airflow outflow direction of the fan 300, the flow guiding section 210 and the side surface of the fan blade 310 adjacent to the flow guiding section are arranged to form an included angle Q, and the included angle is 80-120 degrees.

The annular grids further include a plurality of second annular grids 120, each of the second annular grids 120 is disposed between 2 adjacent first annular grids 110, the heights of the second annular grids 120 are the same, and preferably, the height of the second annular grid 120 is smaller than the first annular grid 110 with the smallest height. By providing the second annular grill 120 having a relatively short height between the adjacent first annular grills 110, the space between the adjacent annular grills can be reduced, the insertion of fingers of children can be prevented, and the production cost can be effectively reduced.

The air conditioner provided in this embodiment may be a mobile air conditioner or a split air conditioner, and when the air conditioner is a split air conditioner, the air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit. The air outlet grille can be used at the air outlet of the mobile air conditioner, and when the air conditioner is a split air conditioner, the air outlet grille can be used at the air outlet of an indoor unit of the air conditioner and also can be used at the air outlet of an outdoor unit of the air conditioner.

The air conditioner in this embodiment further includes a fan 300 and a panel frame 500, the periphery of the air outlet grille is provided with a grille frame fixedly connected with the radial grille strips 200 and the annular grille 100, specifically, the radial grille strips 200, the annular grille 100 and the grille frame are integrally injection-molded, the panel frame 500 is formed with an air duct 510, specifically, the panel frame 500 and the air duct 510 can be molded at one time, the air duct 510 is perpendicular to the panel frame 500 and penetrates through the panel frame 500, the air duct 510 corresponds to the position of the fan 300, specifically, corresponds to the position of an air outlet of the fan 300, so as to ensure that the air blown out by the fan 300 can be directly led out through the air duct 510, when assembling, the air outlet grille is fixed on the panel frame 500 through a bolt for installing the grille frame, the air outlet grille forms a communication channel 700 for guiding the air flow in the air duct 510 out to the external space through the first annular grille 110 at the outermost ring and the side wall of the air duct 510 being fit and attached together with the air, specifically, the first annular grille 110 can be attached to and connected with the inner side wall of the air duct 510, and the seamless attachment connection between the first annular grille 110 on the outermost ring and the air duct 510 can ensure that the air blown out from the air duct 510 cannot be diffused outwards and flow out, so that the diffusion angle of the air is reduced, the problem of airflow backflow caused by the diffusion of the air is effectively solved, and the refrigeration or heating performance of the air conditioner is ensured.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An air conditioner comprises an air outlet grille, wherein the air outlet grille comprises a plurality of coaxially arranged annular grilles which are connected through a plurality of radial grille strips arranged along the radial direction of the annular grilles, each radial grille strip comprises a flow guide section used for guiding airflow blown out by a fan and a rectifying section used for rectifying the guided airflow so that the airflow deviates to the center of the fan and flows out, and the flow guide section is connected with the rectifying section; the annular grill includes a first annular grill whose height gradually increases in a radial direction from a center of the fan to an outer edge of the fan.

2. The air conditioner according to claim 1, wherein the plurality of radial grill bars are gradually increased in height in a direction from a center of the fan to an outer edge of the fan.

3. The air conditioner as claimed in claim 1, wherein the first annular grill located at the outermost layer is attached to a sidewall of an air guide duct for guiding air to the fan.

4. The air conditioner as claimed in claim 1, wherein an included angle is formed between the flow guiding section and the flow rectifying section, and the included angle is 150-170 degrees.

5. The air conditioner of claim 1, wherein the inducer is in smooth-transition connection with the fairing section.

6. The air conditioner according to any one of claims 1 to 5, wherein the guide section is adjacent to the outlet of the fan and substantially parallel to the direction of the flow of the fan.

7. The air conditioner of claim 6, wherein the flow guide section and the side surface of the fan blade adjacent to the flow guide section form an included angle, and the included angle is 80-120 degrees.

8. The air conditioner as claimed in claim 6, wherein the annular grill further comprises a plurality of second annular grills, each of the second annular grills being disposed between adjacent 2 of the first annular grills, the plurality of second annular grills having the same height, the height of the second annular grill being smaller than the first annular grill having the smallest height.

9. The air conditioner according to claim 1, wherein a plurality of guide passages of different heights for guiding the wind blown by the fan are formed between adjacent radial grilles, and the height of the guide passages gradually increases from the center of the fan toward the edge of the fan.

10. The air conditioner according to claim 1, further comprising a fan and a panel frame, wherein an air duct is formed on the panel frame, the air duct corresponds to the fan, the air outlet grille is fixed on the panel frame and forms a communication channel for guiding the air flow in the air duct out to an external space with the air duct by being matched and attached to the side wall of the air duct through the first annular grille at the outermost ring.