Wind shield, air conditioner indoor unit and air conditioner

Abstract

The present invention discloses a windshield, an air conditioner indoor unit, and an air conditioner, wherein the windshield includes a plate body and a plurality of louvers, the plate body extending in the left-right direction and having a plurality of openings formed therein; the plurality of louvers are mounted on the plate body to guide the airflow blown out from the openings, each louver is provided with a plurality of mounting holes, each mounting hole is provided with a plurality of first blades, a plurality of second blades, and an annular connecting portion, one end of the first blade being connected to the inner wall of the mounting hole and the other end being connected to the outer wall of the annular connecting portion, one end of the second blade being connected to the inner wall of the annular connecting portion and the other end extending toward the center of the annular connecting portion and connected thereto; the plurality of louvers include at least one first louver and at least one second louver; the first louver is used to intersect the airflow directed therefrom with the airflow directed by the second louver. The technical solution of the present invention slows down the flow rate of the airflow at the air outlet of the air conditioner indoor unit, thereby improving the windless effect of the air conditioner indoor unit.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a windshield, an air conditioner indoor unit and an air conditioner. Background Art

[0002] Conventional air conditioners deliver air by using a fan to blow heat-exchanged air out of an outlet. When a user is within the air conditioner's air supply range, the airflow from the outlet is high and blows directly toward the user. Especially in the hot summer, prolonged exposure to cold air can cause discomfort and negatively impact the user's health, particularly for the elderly and children, who are more susceptible to colds and other illnesses. Summary of the Invention

[0003] The main purpose of the present invention is to provide a wind shield, which is intended to reduce the flow rate of air blown out by an air conditioner.

[0004] To achieve the above-mentioned object, the wind shield proposed by the present invention is used to be installed in the air outlet duct of the indoor unit of the air conditioner, and the wind shield comprises:

[0005] The plate body extends in the left and right directions, and is provided with a plurality of openings;

[0006] A plurality of louvers are mounted on the plate body to guide the airflow blown out from the opening, each of the louvers is penetrated by a plurality of mounting holes, and each of the mounting holes is provided with a plurality of first blades, a plurality of second blades, and an annular connecting portion, wherein one end of the first blade is connected to the inner wall of the mounting hole and the other end is connected to the outer wall of the annular connecting portion, and one end of the second blade is connected to the inner wall of the annular connecting portion and the other end extends toward the center of the annular connecting portion for connection; wherein the plurality of first blades are all inclined in the same direction toward one hole surface of the mounting hole, and the plurality of second blades are all inclined in the same direction toward the other hole surface of the mounting hole; the plurality of louvers include at least one first louver and at least one second louver;

[0007] The first louver is used to merge the airflow derived therefrom with the airflow derived from the second louver.

[0008] Preferably, the plurality of first blades and the plurality of second blades are staggeredly distributed along the radial direction of the mounting hole.

[0009] Preferably, the first blades are bent in the same direction in the circumferential direction of the mounting hole and are arranged in an arc shape; and / or the second blades are bent in the same direction in the circumferential direction of the mounting hole and are arranged in an arc shape.

[0010] Preferably, the wind shield further comprises a fixing portion provided at the center of the annular connecting portion, the inner ends of the second blades are connected to the fixing portion, and an air hole is provided on the fixing portion.

[0011] Preferably, the inclination angle of the first blade and the inclination angle of the second blade are both greater than 0° and less than or equal to 60°.

[0012] Preferably, the openings are arranged on the plate body at intervals along the left-right direction, and each of the louvers is correspondingly installed on one side of the opening in the left-right direction.

[0013] Preferably, the first louvers and the second louvers both extend obliquely toward the middle of the plate body.

[0014] Preferably, the opening between two adjacent louvers gradually decreases from the two ends to the middle.

[0015] Preferably, the inclination angle of the louvers gradually increases from both ends to the middle.

[0016] Preferably, the plurality of louvers form a plurality of louver groups arranged in the left-right direction, each of the louver groups includes at least one of the first louvers and at least one of the second louvers, wherein the first louvers and the second louvers extend relative to each other.

[0017] Preferably, the first louvers and the second louvers are arranged alternately in the left and right directions.

[0018] Preferably, each of the louver groups includes two adjacent first louvers and two adjacent second louvers, and the two first louvers and the two second louvers extend relative to each other.

[0019] Preferably, the first louver and / or the second louver are arranged to extend in a straight line and tilt; or the first louver and / or the second louver are arranged to extend in an arc and tilt.

[0020] Preferably, the inclination angles of the first louvers and the second louvers in the left and right directions are 10° to 60°.

[0021] Preferably, the louver is made of elastic material; or the louver is flexibly connected to the plate body.

[0022] The present invention also provides an air conditioner indoor unit, comprising an indoor unit main body and a windshield installed on the air outlet duct of the indoor unit main body, wherein the windshield includes a plate body and a plurality of louvers, the plate body extending in the left and right directions, and the plate body having a plurality of openings; the plurality of louvers are installed on the plate body to guide the airflow blown out from the openings, each of the louvers is penetrated by a plurality of mounting holes, each of the mounting holes is provided with a plurality of first blades, a plurality of second blades, and an annular connecting portion, one end of the first blade is connected to the inner wall of the mounting hole, and the other end is connected to the inner wall of the mounting hole. One end of the second blade is connected to the outer wall of the annular connecting part, one end of the second blade is connected to the inner wall of the annular connecting part, and the other end extends toward the center of the annular connecting part and is connected; wherein, multiple first blades are inclined in the same direction toward one hole surface of the mounting hole, and multiple second blades are inclined in the same direction toward the other hole surface of the mounting hole; the multiple louvers include at least one first louver and at least one second louver, the first louver is used to intersect the airflow derived therefrom with the airflow derived by the second louver, and the wind shield is installed on the air outlet duct of the indoor unit body.

[0023] The present invention also provides an air conditioner, comprising an air conditioner outdoor unit and an air conditioner indoor unit, the air conditioner indoor unit comprising an indoor unit main body and a wind shield, the wind shield comprising a plate body and a plurality of louvers, the plate body extending in the left and right directions, the plate body being provided with a plurality of openings; the plurality of louvers being mounted on the plate body for guiding the airflow blown out from the openings, each of the louvers being provided with a plurality of mounting holes, each of the mounting holes being provided with a plurality of first blades, a plurality of second blades, and an annular connecting portion, one end of the first blade being connected to the inner wall of the mounting hole, and the other end being connected to the annular connecting portion The outer wall of the connecting part, one end of the second blade is connected to the inner wall of the annular connecting part, and the other end extends toward the center of the annular connecting part and is connected; wherein, multiple first blades are inclined in the same direction toward one hole surface of the mounting hole, and multiple second blades are inclined in the same direction toward the other hole surface of the mounting hole; the multiple louvers include at least one first louver and at least one second louver, the first louver is used to intersect the airflow derived therefrom with the airflow derived by the second louver, the wind shield is installed on the air outlet duct of the indoor unit body, and the air conditioner outdoor unit is connected to the air conditioner indoor unit.

[0024] The technical solution of the present invention is to set multiple openings on the plate body and install multiple louvers. By setting some of the louvers at an angle, the airflows blown out from the multiple openings can be intersected, so that part of the airflow is broken up. Finally, the airflow blown out from the openings has a lower flow rate on the one hand, and on the other hand, the direction of the airflow is diversified, so that the airflow blown out has a better windless effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0026] Figure 1 This is a schematic structural diagram of an embodiment of a windshield according to the present invention;

[0027] Figure 2-a Schematic diagram of the arrangement structure of the first louver and the second louver on the plate body, wherein the first louver and the second louver both extend in the left and right directions, the first louver is inclined downward, and the second louver is inclined upward;

[0028] Figure 2-b Schematic diagram of the arrangement structure of the first louver and the second louver on the plate body; wherein the first louver and the second louver are both on the upper and lower edges, the first louver is inclined to the left, and the second louver is inclined to the right;

[0029] Figure 2-c Schematic diagram of the arrangement structure of the first louver and the second louver on the plate body; wherein the first louver extends in the left-right direction, the second louver extends in the up-down direction, the first louver is inclined downward, and the second louver is inclined to the right;

[0030] Figure 2-d Schematic diagram of the arrangement structure of the first louver and the second louver on the plate body; wherein the first louver and the second louver both extend in the vertical direction, the first louver is inclined to the right, and the second louver is also inclined to the right, and the inclination angle of the first louver is greater than the inclination angle of the second louver;

[0031] Figure 2-e Schematic diagram of the arrangement structure of the first louver and the second louver on the plate body; wherein the first louver and the second louver are both on the left and right edges, the first louver is inclined downward, and the second louver is inclined upward;

[0032] Figure 2-f It is a structural schematic diagram of another embodiment of the arrangement of louvers on the plate body;

[0033] Figure 3 for Figure 1 Schematic diagram of the middle louver structure;

[0034] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0035] Figure 5 for Figure 1 A cross-sectional view of the middle windshield along the MM first embodiment;

[0036] Figure 6 for Figure 1 A cross-sectional view of the middle windshield along the MM second embodiment;

[0037] Figure 7 for Figure 1 A cross-sectional view of the middle windshield along the MM third embodiment;

[0038] Figure 8 for Figure 1 A cross-sectional view of the middle windshield along the MM fourth embodiment;

[0039] Figure 9 It is a structural schematic diagram of an embodiment after the louver and the plate body are assembled, wherein the louver is made of elastic material;

[0040] Figure 10 It is a structural schematic diagram of another embodiment after the louver and the plate body are assembled, wherein the louver and the plate body are connected by elastic material.

[0041] Description of Figure Numbers:

[0042] Label name Label name 10 windshield 11 Board body 110 Opening 12 blinds 12a The 100th Leaf 12b No. 200 120 Mounting holes 120a First blade 120b Second blade 120c Ring connection 120d Fixed part 1201 First air gap 1202 Second air dissipation gap 121 No. 1 blinds 122 No. 2 louver 123 No. 3 louver 124 No. 4 louver W Intersection I First airflow II Second airflow

[0043] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0046] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0047] Figures 1 to 10Preferred embodiments and variations of the windshield of the present invention are shown, featuring multiple improvements. Each improvement is described as an embodiment in the detailed description. Technical features of the various embodiments described below can be freely combined without structural interference or conflict. If a combination of technical solutions contradicts or cannot be implemented, such combination shall be deemed non-existent and outside the scope of protection claimed by the present invention.

[0048] The present invention provides a windshield, an air conditioner indoor unit equipped with the windshield, and an air conditioner including the indoor unit. The air conditioner indoor unit can be either a wall-mounted or cabinet unit. For ease of description, the following description will specifically use a wall-mounted unit as an example. The windshield 10 is installed in the air duct of the air conditioner indoor unit, specifically at the air outlet or within the air duct (inside the air outlet).

[0049] In the embodiment of the present invention, Figures 1 to 5 As shown, the windshield 10 includes a plate body 11 and a plurality of louvers 12. The plate body 11 extends in the left-right direction and is provided with a plurality of openings 110. The louvers 12 are mounted on the plate body 11 to guide the airflow blown out from the openings 110. Each of the louvers 12 is provided with a plurality of mounting holes 120. Each mounting hole 120 is provided with a plurality of first blades 120a, a plurality of second blades 120b, and an annular connecting portion 120c. One end of the first blade 120a is connected to the inner wall of the mounting hole 120 and the other end is connected to the outer wall of the annular connecting portion 120c. One end of the second blade 120b is connected to the inner wall of the annular connecting portion 120c and the other end extends toward the center of the annular connecting portion 120c. The plurality of first blades 120a are all inclined in the same direction toward one hole surface of the mounting hole 120, and the plurality of second blades 120b are all inclined in the same direction toward the other hole surface of the mounting hole 120. The plurality of louvers 12 include at least one first louver 12a and at least one second louver 12b; the first louver 12a is used to merge the airflow derived therefrom with the airflow derived from the second louver 12b.

[0050] Specifically, before the louvers 12 are installed, when the airflow is blown out from the opening 110, the airflow is not guided and blown out directly from the opening 110 without changing its direction. After the louvers 12 are installed, the airflow can be blown out along the extending direction of the louvers 12.

[0051] The louvers 12 extend in two directions on the panel body 11: the first direction is the direction of the intersection line between the louvers 12 and the panel body 11, and the second direction is the direction of the louvers 12 extending away from the panel body 11. Unless otherwise specified, the extension direction mentioned below refers to the direction of the intersection line between the louvers 12 and the panel body 11.

[0052] The louvers 12 are arranged around the opening 110. If the louvers 12 are perpendicular to the plate body 11, the airflow blown out from the opening 110 can be blown out directly along the louvers 12; if the louvers 12 are tilted at a certain angle toward the opening 110, the direction of the airflow blown out from the opening 110 changes.

[0053] Here, refer to Figure 2-a The extension direction of the connection between the louver 12 and the plate body 11 is along the left and right directions. At this time, the louver 12 can be tilted upward or downward. Figure 2-b The louver 12 can extend in the up-down direction on the plate body 11, and the louver 12 can be tilted to the left or right. The louver 12 can also extend in the lower left direction on the plate body 11, and the louver 12 can be tilted to the upper left or lower left.

[0054] There are many ways to implement the intersection of the airflow guided by the first louvers 12a and the airflow guided by the second louvers 12b, which will be described in detail below using multiple embodiments.

[0055] In one embodiment, referring to Figure 2-b , the first louver 12a extends vertically and tilts to the right, the second louver 12b is located to the right of the first louver 12a, and the second louver 12b extends roughly vertically and tilts to the left. At this time, the airflow derived from the two types of louvers 12 converges near the plate body 11 (the intersection area w as shown in the figure), the wind energy loss is large, and the windless effect is the best, but at the same time, the cooling effect is average. In addition, due to the limited space at the air outlet of the air conditioner, the airflow is prone to form vortices, which will cause loud noise and less airflow. Of course, referring to Figure 2-d and Figure 2-e The second louver 12b can be perpendicular to the plate body 11, or slightly inclined to the right (as long as its inclination angle is not greater than the inclination angle of the first louver 12a). At this time, the airflow derived from the two louvers 12 converges at the front side of the plate body 11, and the airflow is broken up at the front side of the plate body 11. Since the airflow mixes with the indoor normal temperature airflow after being blown out, the wind feeling is softer, the windless effect is better, and the cooling effect is also better.

[0056] Based on the previous embodiment, refer to Figure 2-fIn order to achieve a better windless effect, better cooling effect, and lower noise, multiple louvers 12 can be formed into multiple louver groups arranged in the left and right directions. Each louver group includes a No. 1 louver 121 extending from left to right along the vertical direction and tilted to the left, a No. 2 louver 122 extending along the vertical direction and perpendicular to the plate body 11, a No. 3 louver 123 extending along the vertical direction and perpendicular to the plate body 11, and a No. 4 louver 124 extending along the vertical direction and tilted to the right. After the airflows derived from the No. 1 louver 121 and the No. 2 louver 122 meet, a part of the mixed airflow is broken up, and the remaining airflow is the first airflow I. After the airflows derived from the No. 3 louver 123 and the No. 4 louver 124 meet, a part of the mixed airflow is broken up, and the remaining airflow is the second airflow II. At this time, the first airflow I and the second airflow II will meet again at a distance from the windshield 10. Due to the secondary intersection of the airflow, the airflow derived from each such louver group not only has less wind energy loss and better cooling effect, but also less noise, and provides an excellent windless experience.

[0057] Different from the above embodiment, in another embodiment, Figure 2-a The first louver 12a extends in the left-right direction and tilts downward. At this time, the second louver 12b can be located below the first louver 12a. The second louver 12b can extend roughly in the left-right direction. At this time, the second louver 12b can no longer be tilted in the up-down direction, but can also be tilted upward or slightly downward (as long as its inclination angle is not greater than the inclination angle of the first louver 12a). At this time, the airflows derived from the two can also converge.

[0058] In another preferred embodiment, referring to Figure 2-c , the first louver 12a extends in the left-right direction and tilts downward, the second louver 12b is located on the lower left side of the first louver 12a, the second louver 12b extends in the up-down direction and tilts to the right; or the second louver 12b is located on the lower right side of the first louver 12a, the second louver 12b extends in the up-down direction and tilts to the left. At this time, the airflows derived from the two can intersect. In this embodiment, the airflow derived from the first louver 12a has two components, one of which is forward and the other is downward; the airflow derived from the second louver 12b has two components, one of which is to the right (left) and the other is forward. Therefore, the two forward components can be superimposed and blown out, and after the downward component and the right (left) component intersect, the airflow tilts to the right (left) and below. Here, since the airflow derived from the first louver 12a and the airflow derived from the second louver 12b do not intersect head-on (head-on means the directions are roughly opposite), after the two intersect, part of the airflow is broken up and part of the airflow can be blown toward the user, the wind energy loss is small and the windless effect is better.

[0059] In addition, since the louver 12 is provided with a plurality of mounting holes 120 , and the mounting holes 120 are provided with a first blade 120 a and a second blade 120 b , under the action of the first blade 120 a and the second blade 120 b , the windshield 10 can also achieve a windless effect.

[0060] First, a first wind dispersion gap 1201 is formed between two adjacent first blades 120a, and a second wind dispersion gap 1202 is formed between two adjacent second blades 120b. Since the inclination directions of the multiple first blades 120a and the multiple second blades 120b are opposite, the inclination directions of the first wind dispersion gap 1201 and the second wind dispersion gap 1202 are opposite. The airflows flowing out through the first wind dispersion gap 1201 and the second wind dispersion gap 1202 can collide with each other, forming turbulence, thereby reducing the feeling of wind blowing out from the front.

[0061] Secondly, since the multiple first blades 120a are arranged along a circular trajectory, the multiple second blades 120b are arranged along a circular trajectory, and the first wind dispersion gap 1201 and the second wind dispersion gap 1202 are both inclined to the axial direction of the mounting hole, the gas flowing out through the inclined first wind dispersion gap 1201 and the second wind dispersion gap 1202 will change its gas flow direction. In this way, the intensity of the airflow blown out from the front of the wind shield 10 is weakened, thereby improving the windless feeling effect of the airflow. Therefore, when the airflow passes through the wind shield 10 proposed in this patent and blows to the human body, the airflow intensity is weakened, the airflow comfort is higher, and the user can be prevented from suffering from air-conditioning disease.

[0062] Finally, since the windshield proposed in this patent is concentrically provided with a first blade group and a second blade group, and the two blade groups are inclined in opposite directions, the airflow flowing out through the first wind dispersion gap 1201 and the second wind dispersion gap 1202 has different rotation directions. In this way, the first blade group and the second blade group will form two rotating airflows in opposite directions. Each rotating airflow can itself be rotated and broken up once. After the two rotating airflows intersect, they can further disrupt the airflow, forming turbulence and achieving a windless feeling. Therefore, while improving the windless feeling of the airflow outflow of the air conditioner indoor unit, this patent does not need to reduce the opening rate of the windshield 10, that is, it does not need to increase the windproof area of ​​the windshield 10. Therefore, the windshield 10 proposed in this patent can avoid a large amount of loss of the supply airflow, thereby improving the air supply effect of the air conditioner indoor unit.

[0063] The technical solution of the present invention is to set multiple openings 110 on the plate body 11 and install multiple louvers 12. On the one hand, by tilting some of the louvers 12, the airflows blown out from the multiple openings 110 can be converged; thereby, part of the airflow is broken up; on the other hand, part of the airflow can also flow out from the special-shaped holes. Finally, the airflow blown out from the wind shield 10 has a lower flow rate and diversified directions of the airflow, thereby achieving a better windless effect of the airflow.

[0064] Reference Figure 4 To strengthen the forces exerted by the first and second blades 120a, 120b on the annular connecting portion 120c, multiple first blades 120a and multiple second blades 120b are staggered radially along the mounting hole 120. This provides fixed structures on both the inner and outer sides of the annular connecting portion 120c, allowing the annular connecting portion 120c to withstand strong outflows throughout its entire circumference. This significantly improves the structural strength of the annular connecting portion 120c and prevents breakage.

[0065] Since the curved blades use more material than straight blades, the structural strength of the curved blades can be improved, and the curved blades are not easily deformed, thereby increasing the service life of the curved blades.

[0066] In addition, the windshield 10 should not have too strong or too weak windshield effect. An overly strong windshield effect will lead to poor air supply effect, thus affecting the indoor cooling effect (the cold air of the air conditioner will only spread around the air conditioner and will not be able to spread to all areas of the room).

[0067] For straight blades, the airflow vortex effect ultimately formed by multiple straight blades is average, so the airflows blown out by adjacent blades have a stronger interaction effect, which ultimately leads to the air supply effect of the air conditioner being average, and the windless feeling effect being average (it should be noted that, here, the windless feeling means that the user feels a smaller wind feeling, not that there is no wind).

[0068] In this embodiment, the blades are arranged in an arc shape, that is: the first blade 120a is bent in the same direction in the circumferential direction of the mounting hole 120 and is arranged in an arc shape; and / or the second blade 120b is bent in the same direction in the circumferential direction of the mounting hole 120 and is arranged in an arc shape. In this way, the arc-shaped blades (the first blade 120a and / or the second blade 120b) have a gathering effect on the outflowing airflow, thereby reducing the rotation radius of the rotating airflow. Furthermore, the rotating airflow itself has a better vortex effect, and its air supply distance is farther than that of straight blades. In addition, since the airflow flows out in the form of a vortex, when the airflow blows towards the user, it has a dimension of flowing towards the user and a rotation dimension, so that the user experience effect is excellent. Furthermore, the vortex airflow mixes more evenly with the air, and the airflow felt by the user is also softer.

[0069] Continue to refer to Figure 4 In a preferred embodiment, the windshield 10 further includes a fixing portion 120d disposed at the center of the annular connecting portion 120c, the inner ends of the second blades 120b are connected to the fixing portion 120d, and the fixing portion 120d is provided with a ventilation hole.

[0070] Considering that the inner ends of the plurality of second blades 120b are fixed together, in order to increase the area of ​​the fixed connection between the second blades 120b and thereby enhance the bonding strength between the plurality of second blades 120b, the windshield 10 further includes a fixing portion 120d disposed in the middle portion of the mounting hole 120. The inner ends of the second blades 120b are each fixedly connected to the fixing portion 120d. Specifically, the fixing portion 120d is circular in shape, and the inner ends of the plurality of second blades 120b are fixed to the peripheral sidewalls of the fixing portion 120d at intervals. Because the peripheral sidewalls of the fixing portion 120d are much larger than the area of ​​the inner ends of the second blades 120b, the structural strength of the inner ends of the plurality of second blades 120b being fixed to the fixing portion 120d is greater than the structural strength of the inner ends of the plurality of second blades 120b being fixed to each other.

[0071] Continue to refer to Figure 4 In a preferred embodiment, the inclination angle of the first blade 120a and the inclination angle of the second blade 120b are both greater than 0° and less than or equal to 60°.

[0072] Specifically, when α is in the range of (0°, 60°), after the gas flows through the blades (the first blade 120a and the second blade 120b), the degree of deflection of the airflow is moderate, so that the airflows flowing out of different blades can achieve better interaction, improve the air mixing effect, and ultimately achieve a windless feeling of the air flow out of the air conditioner indoor unit.

[0073] It should be noted that the "no wind feeling" refers to a moderate airflow intensity that makes the user feel comfortable. [0°, 60°] is the maximum range of inclination angles when the airflow flowing out of multiple blades can achieve good interaction. In another embodiment of this patent, the blade inclination angle range is preferably [0°, 45°]. The best no wind feeling effect is achieved when and only when the blade inclination angle is 20°.

[0074] For the hanging machine, the air outlet is generally rectangular, and the wind wheel inside the hanging machine is generally a cross-flow wind wheel. In view of this, in order to correspond to the cross-flow wind wheel, in one embodiment, reference is made to Figure 1 The openings 110 are arranged at intervals along the left-right direction on the plate body 11, and each of the louvers 12 is installed on one side of the opening 110 in the left-right direction. In other words, the louvers 12 extend in the up-down direction, and their inclination is mainly in the left-right direction. There are various arrangements and combinations of the louvers 12.

[0075] The first arrangement method: refer to Figure 5 and Figure 8, the first louver 12a and the second louver 12b both extend obliquely toward the middle of the plate body 11. That is, the first louver 12a is located on the left side of the plate body 11 and is inclined to the right, and the second louver 12b is located on the right side of the plate body 11 and is inclined to the left. When the airflow blows out from the opening 110 on the left side of the plate body 11, under the joint guiding action of the multiple first louvers 12a, the airflow blows to the right. When the airflow blows out from the opening 110 on the right side of the plate body 11, under the joint guiding action of the multiple second louvers 12b, the airflow blows to the left, and the two airflows eventually converge roughly at the front middle position of the plate body 11 and are broken up into airflows in multiple directions, with a better wind-free effect.

[0076] Continue to refer to Figure 5 When the cross-flow impeller is operating, the left and right side walls of the air duct exert a lagging force on the airflow, so the airflow volume in the middle of the air outlet is the largest. In view of this, in this embodiment, the opening between two adjacent louvers 12 gradually decreases from the ends to the middle (here, the opening refers to the minimum distance between two adjacent louvers). In the air duct, although the airflow velocity in the middle is higher and smaller on the left and right sides, the opening between the two louvers 12 in the middle of the windshield 10 is smaller, while the opening on the left and right sides is larger. Therefore, when the cross-flow impeller is operating, part of the airflow in the middle can be blown out from the opening 110 in the middle of the windshield 10, and the other part is diverted to the left and right sides of the windshield 10 and blown out from the openings 110 on both sides. Ultimately, the airflow velocity blown out of the windshield 10 is relatively uniform. For example, the opening between two adjacent windshields 10 increases by 5% to 10% from the middle to the sides.

[0077] Different from the above embodiment, in order to make the airflow blown out by the windshield 10 more uniform in the left and right directions, in this embodiment, the reference Figure 8 The inclination angle of the louvers 12 increases gradually from both ends to the middle. For example, the inclination angle of the louvers 12 increases by 5° to 10° from both sides to the middle of the plate body 11.

[0078] The second arrangement method: refer to Figure 6 and Figure 7, the multiple louvers 12 form a plurality of louver groups arranged in the left-right direction, and each of the louver groups includes at least one first louver 12a and at least one second louver 12b, wherein the first louver 12a and the second louver 12b extend relative to each other. For example, each louver group may include one first louver 12a and one second louver 12b, and the first louver 12a and the second louver 12b are arranged alternately in the left-right direction. It is also possible that each louver group includes two adjacent first louvers 12a and two adjacent second louvers 12b, and the two first louvers 12a and the two second louvers 12b extend relative to each other. Of course, it is also possible that each louver group includes one first louver 12a and two or more second louvers 12b, or it can include more than two first louvers 12a and more than two second louvers 12b.

[0079] In the above embodiment, referring to Figure 8 , the first louver 12a and / or the second louver 12b are arranged to extend in a straight line and tilt; or the first louver 12a and / or the second louver 12b are arranged to extend in an arc and tilt (refer to Figures 5 to 7 ). For the louvers 12 extending in a straight line, the velocity of the airflow derived therefrom is relatively rapid, and the noise is relatively loud; in addition, the corner at the connection between the louvers 12 and the plate body 11 is relatively large, and the impact force of the blown airflow on the louvers 12 is relatively large, and the noise will also be relatively loud. For the louvers 12 extending in an arc, when the airflow flows from the opening 110 to the louvers 12, it can flow along the arc of the louvers 12, and the airflow velocity is relatively slow, the wind loss is small, the noise is also small, and the convection effect is also better. Of course, in order to prevent the velocity of the airflow blown out from the opening 110 from being too rapid, the louvers 12 can also be set in a wavy shape. In this way, the flow path and contact area of ​​the airflow on the louvers 12 are lengthened, the velocity of the airflow derived from the louvers 12 is more moderate, and the noise is also reduced.

[0080] In the above embodiment, referring to Figure 8 The inclination angle of the louver 12 cannot be too large (the inclination angle refers to the angle formed by the louver tilting or bending toward one side from the position when it is perpendicular to the plate body; for curved louvers, the inclination angle refers to the angle between the tangent at the end of the louver and the louver when it is perpendicular to the plate body), nor can it be too small. If the inclination angle of the louver 12 is too large, for example, the inclination angle is greater than 60°, then the airflow derived from the louver 12 will mainly gather near the plate body 11. In this way, the resistance of the windshield 10 is too large, which seriously affects the cooling efficiency and also causes a lot of noise. Of course, the inclination angle cannot be too small, for example, the inclination angle is less than 10°. In this way, it is difficult for the airflow to converge, or the amount of converged airflow is small, and the windless effect is greatly reduced. In view of this, in this embodiment, the inclination angles of the first louver 12a and the second louver 12b in the left and right directions are 10° to 60°, for example, 30°, 45°, etc.

[0081] The indoor unit of the air conditioner has multiple air supply modes. When the crossflow impeller rotates faster, the airflow blows towards the windshield 10. The windshield 10 stops the airflow, and the air pressure in the air duct is high, making it difficult for the airflow to be delivered. In this way, on the one hand, the heat exchanger in the indoor unit will quickly frost, seriously affecting the cooling efficiency. On the other hand, the vortex in the air duct is serious, the noise is loud, and the user experience is affected. In view of this, in this embodiment, referring to Figure 9 The louvers 12 are made of elastic material. Thus, when high-pressure air flows toward the louvers 12, the louvers 12 can be elastically deformed, thereby increasing the opening between two adjacent louvers 12, thereby achieving the purpose of pressure relief.

[0082] In addition, in order to make the pressure relief effect of the louver 12 better, in this embodiment, Figure 10 The louver 12 is flexibly connected to the plate body 11 (eg Figure 10 (The thickness L at the connection between the louver and the plate body is less than the thickness of the louver itself.) Thus, once the louver 12 is subjected to a large airflow thrust, the louver 12 can rotate relative to the plate body 11, thereby expanding the opening. Of course, if the louver 12 is flexibly connected to the plate body 11 and the louver 12 itself is made of an elastic material, the pressure relief effect will be even better.

[0083] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A windshield for installation in the air outlet duct of an indoor unit of an air conditioner, characterized in that: include: The plate body extends in the left and right directions, and is provided with a plurality of openings; A plurality of louvers are mounted on the plate body to guide the airflow blown out from the opening, each of the louvers is penetrated by a plurality of mounting holes, and each of the mounting holes is provided with a plurality of first blades, a plurality of second blades, and an annular connecting portion, wherein one end of the first blade is connected to the inner wall of the mounting hole and the other end is connected to the outer wall of the annular connecting portion, and one end of the second blade is connected to the inner wall of the annular connecting portion and the other end extends toward the center of the annular connecting portion for connection; wherein the plurality of first blades are all inclined in the same direction toward one hole surface of the mounting hole, and the plurality of second blades are all inclined in the same direction toward the other hole surface of the mounting hole; The plurality of louvers include at least one first louver and at least one second louver; the first louver is used to intersect the airflow derived therefrom with the airflow derived from the second louver; The openings are arranged on the plate body at intervals along the left-right direction, each of the louvers is correspondingly installed on one side of the opening in the left-right direction, and the louvers are flexibly connected to the plate body; The plurality of louvers form a plurality of louver groups arranged in a left-right direction, each of the louver groups includes at least one of the first louvers and at least one of the second louvers, and the first louvers and the second louvers extend opposite to each other.

2. The windshield according to claim 1, wherein: The plurality of first blades and the plurality of second blades are staggeredly distributed along the radial direction of the mounting hole.

3. The windshield according to claim 2, wherein: The first blades are bent in the same direction in the circumferential direction of the mounting hole and are arranged in an arc shape; and / or the second blades are bent in the same direction in the circumferential direction of the mounting hole and are arranged in an arc shape.

4. The windshield according to claim 3, wherein: The windshield further comprises a fixing portion arranged at the center of the annular connecting portion, the inner ends of the second blades are connected to the fixing portion, and the fixing portion is provided with an air hole.

5. The windshield according to claim 3, wherein: The inclination angle of the first blade and the inclination angle of the second blade are both greater than 0° and less than or equal to 60°.

6. The windshield according to claim 1, wherein: The first louvers and the second louvers are alternately arranged in a left-right direction.

7. The windshield according to claim 1, wherein: Each of the louver groups includes two adjacent first louvers and two adjacent second louvers, and the two first louvers and the two second louvers extend relative to each other.

8. The windshield according to any one of claims 1 to 7, characterized in that: The first louver and / or the second louver are arranged to extend in a straight line and tilt; or the first louver and / or the second louver are arranged to extend in an arc and tilt.

9. The windshield according to any one of claims 1 to 7, characterized in that: The inclination angles of the first louvers and the second louvers in the left and right directions are 10° to 60°.

10. The windshield according to any one of claims 1 to 7, characterized in that: The material of the louver is elastic material.

11. An indoor unit, comprising an indoor unit main body, characterized in that: It also includes the wind shield according to any one of claims 1 to 10, wherein the wind shield is installed at the air outlet duct of the indoor unit body.

12. An air conditioner, comprising an air conditioner outdoor unit, characterized in that: It also includes the indoor unit as claimed in claim 11, wherein the air conditioner outdoor unit is connected to the indoor unit.

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