Outdoor unit and air conditioner

Abstract

The present invention provides an outdoor unit and an air conditioner, wherein the outdoor unit includes an air outlet grille and a frame, wherein the air outlet grille includes a plurality of vertical ribs and a plurality of transverse ribs, wherein the transverse ribs are divided into a left torsion portion and a right torsion portion with the vertical center axis of the frame as the boundary, the torsion angles of the left torsion portion and the right torsion portion are opposite, and the torsion angles of the left torsion portion and the right torsion portion are gradually increased from the side close to the vertical center axis to the side close to the frame, and the torsion angles formed by the transverse ribs above or below the horizontal center rib and the frame are gradually increased. The outdoor unit of the present invention improves the air outlet efficiency and the overall exhaust volume of the outdoor unit by setting the air outlet surface of the air outlet grille on the outdoor unit to a torsion angle that matches the centrifugal air outlet angle of the airflow, reduces wind loss when the airflow passes through the air outlet grille, and reduces air outlet noise.

Description

Technical Field

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

[0002] Existing air conditioner outdoor units are all provided with an air outlet mesh cover, which not only plays a safety protection role, but also has the important functions of air guidance and rectification.

[0003] The air outlet mesh cover includes a plurality of parallel horizontal ribs and a plurality of parallel vertical ribs, and the plurality of horizontal ribs and the plurality of vertical ribs are staggered, and the air guide surfaces of the horizontal ribs and the vertical ribs are both planar structures. The fan installed inside the outdoor unit is generally an axial flow fan. When the axial flow fan rotates at high speed, it will generate an airflow with a centrifugal effect. The airflow is finally blown out of the outdoor unit through the air outlet mesh cover. However, there is still a centripetal rotation angle when the airflow passes through the air outlet mesh cover. When the airflow with a centripetal rotation angle passes through the air outlet mesh cover, it will be resisted by the air guide surfaces of the horizontal ribs and the vertical ribs, thereby causing air volume loss. Moreover, the collision of the airflow with the air guide surfaces of the horizontal ribs and the vertical ribs will generate noise, which correspondingly increases the noise of the outdoor unit.

[0004] Although the prior art has disclosed the use of curved air guide surfaces for horizontal and vertical ribs to achieve airflow with a centripetal rotation angle, the arc angle is generally set to the same angle from top to bottom. Such a setting still causes some air volume loss in some positions, and excessively reduces the strength of the ribs in some positions, which easily causes deformation of some ribs. Summary of the Invention

[0005] In view of this, the present invention aims to propose an outdoor unit and an air conditioner, by improving the air guide surface of the air outlet mesh cover and twisting the transverse ribs and / or vertical ribs so that the twisting angle of the air outlet surface of the transverse ribs and / or vertical ribs matches the angle of centrifugal air outlet of the airflow, thereby improving the air outlet efficiency and achieving the purpose of reducing wind loss and reducing wind noise.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] The grille is configured to have a first end facing the cam, and the second end facing the cam is configured to have a first end facing the cam, and a second end facing the cam, wherein the grille has a first end facing the cam, and the second end facing the cam is configured to have a first end facing the cam.

[0008] The outdoor unit described in the present invention improves the structure of the air outlet mesh cover so that the air outlet surface on the transverse ribs and the air outlet airflow of the outdoor unit change according to the same or similar rules, reducing the time for the air flow to pass through the air outlet surface and the work stroke of the transverse ribs on the air flow, thereby achieving the purpose of effectively reducing the air outlet noise and air volume loss.

[0009] Furthermore, a fan is arranged inside the outdoor unit, and the fan includes a hub and fan blades arranged on the circumference of the hub. The outer contour line of the fan blade is defined as L1, the center point of L1 is the tangent point, and the outer contour tangent line at the tangent point is defined as L2. The angle between L1 and L2 is β, α=β, or α=β+M, where M is an angle difference parameter set based on experience.

[0010] This setting associates the minimum angle α at the connection between the transverse ribs and the frame, further improving the air outlet effect of the air outlet grille, reducing air volume loss and generated air outlet noise.

[0011] Furthermore, the hub of the fan is arranged corresponding to the center of the frame, the left torsion part and the right torsion part are symmetrically arranged along the vertical central axis of the frame, and the transverse ribs on the upper and lower sides of the horizontal central rib are symmetrically arranged along the transverse vertical central axis of the frame.

[0012] This arrangement ensures that the air outlet resistance of the outdoor unit through the air outlet grille is equal at symmetrical positions, thereby achieving force balance between the upper and lower parts, and the left and right parts of the transverse ribs on the air outlet grille, making it less prone to failure.

[0013] Furthermore, the torsion angle at the connection between the horizontal central rib and the first side panel of the frame is α, the torsion angle at the connection between the first adjacent transverse rib above the horizontal central rib and the first side panel is α+a, and the torsion angle at the connection between the first adjacent transverse rib above the horizontal central rib and the first side panel is α+b, where b>a.

[0014] Furthermore, the transverse ribs above and / or below the horizontal center rib are evenly distributed on the frame, the length L of the transverse ribs, the height H between any two adjacent transverse ribs, the ratio of L to H is in the range of 15~50, and the value range of a is 0.1~0.3, wherein the difference in torsion angle between any two adjacent transverse ribs is ba, 0.1≤ba≤1, or the difference in torsion angle between any two adjacent transverse ribs increases with the increase of the distance between them and the horizontal center rib.

[0015] This arrangement further improves the degree of adaptability and matching between the twisting angle of the air outlet surface of the transverse ribs and the angle of the centrifugal air outlet, thereby improving the air outlet efficiency, reducing wind loss and lowering wind noise.

[0016] Furthermore, the torsion angle formed by the uppermost transverse rib in the frame and the first side plate and the second side plate of the frame is no greater than 45°, and the torsion angle formed by the lowermost transverse rib in the frame and the first side plate and the second side plate is no greater than 45°.

[0017] This setting, by setting a reasonable angle and combining the structural design of the transverse rib torsion angle, is conducive to increasing the overall exhaust volume of the outdoor unit and reducing wind noise and wind loss.

[0018] Furthermore, the transverse ribs above and / or below the horizontal center rib include first ribs and second ribs, the width of the first ribs is greater than the width of the second ribs, a plurality of second ribs are arranged between two of the first ribs, and / or the first ribs and the second ribs are arranged alternately.

[0019] This arrangement significantly improves the strength of the air outlet grille, preventing the air outlet grille from being deformed, damaged, or otherwise damaged by wind or external forces during air outlet, thereby improving the reliability and stability of the air outlet grille.

[0020] Furthermore, a central reinforcing rib is provided on the air outlet grille at a position corresponding to the hub of the fan.

[0021] This setting improves the strength of the air outlet grille without affecting the air outlet effect of the air outlet grille, ensures reliable air outlet of the outdoor unit, and extends the service life of the outdoor unit.

[0022] Furthermore, the vertical rib includes an upper torsion portion and a lower torsion portion, the upper torsion portion and the lower torsion portion are symmetrically arranged along the horizontal vertical central axis of the frame, the vertical ribs on both sides of the vertical vertical central axis of the frame are symmetrically arranged, the upper torsion portion and the lower torsion portion are gradually enlarged from close to the horizontal vertical central axis to close to the connection side of the vertical rib and the frame, and the torsion angle of the vertical rib is gradually increased from close to the vertical vertical central axis to a position away from the vertical vertical central axis.

[0023] This arrangement further improves the degree of adaptability and matching between the outlet surface of the air outlet mesh cover and the centrifugal outlet angle of the airflow, thereby reducing wind loss and outlet wind noise.

[0024] Compared with the prior art, the outdoor unit of the present invention has the following advantages:

[0025] The outdoor unit described in the present invention improves the air outlet efficiency and the overall exhaust volume of the outdoor unit by setting the air outlet surface of the air outlet mesh cover on the outdoor unit to a twist angle that matches the angle of the centrifugal air outlet of the air flow, reduces the wind loss of the air flow passing through the air outlet mesh cover, and reduces the wind noise of the air outlet.

[0026] Another object of the present invention is to provide an air conditioner equipped with the outdoor unit described above.

[0027] The advantages of the air conditioner and the outdoor unit described above over the prior art are the same and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 It is a structural diagram of an outdoor unit in the prior art;

[0030] Figure 2 This is a front view structural diagram of the air outlet grille according to an embodiment of the present invention;

[0031] Figure 3 This is a schematic side view of the air outlet grille according to an embodiment of the present invention;

[0032] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0033] Figure 5 for Figure 4 A partial enlarged view of the middle C part;

[0034] Figure 6 for Figure 2Schematic diagram of the cross-sectional structure of the middle BB;

[0035] Figure 7 This is a schematic structural diagram of a fan according to an embodiment of the present invention;

[0036] Figure 8 is a schematic cross-sectional structural diagram of a fan according to an embodiment of the present invention;

[0037] Description of reference numerals:

[0038] 100-outdoor unit, 1-air outlet grille, 2-frame, 201-first side panel, 202-second side panel, 3-vertical ribs, 31-upper torsion portion, 32-lower torsion portion, 4-transverse ribs, 401-first ribs, 402-second ribs, 403-horizontal center ribs, 5-center reinforcement ribs, 6-reinforcement protrusions, 7-fan, 701-hub, 702-blades, L1-blade outer contour line, L2-outer contour tangent. DETAILED DESCRIPTION

[0039] In order to make the technical means, objectives and effects of the present invention easier to understand, embodiments of the present invention are described in detail below with reference to specific figures.

[0040] Example 1

[0041] The outdoor unit 100 targeted by this embodiment has substantially the same specific components as conventional outdoor units, namely, the outdoor unit 100 includes a housing structure, a compressor, a heat exchanger, a control box, a middle partition, a top cover, a sensor, a fan 7, an air outlet mesh cover 1, and other components. In the prior art, the fan 7 is mounted on the housing structure of the outdoor unit 100 via a fan bracket. The fan 7 is used to discharge the air after heat exchange on the outdoor unit 100 to the outside. The fan 7 installed inside the outdoor unit 100 is generally an axial flow fan. When the axial flow fan rotates at high speed, it generates centrifugal airflow, which is eventually blown out of the outdoor unit through the air outlet mesh cover 1. The air outlet mesh cover 1 is generally arranged at the air outlet on the housing of the outdoor unit 100. The air outlet mesh cover 1 generally includes a plurality of parallel vertical ribs 3 and a plurality of parallel transverse ribs 4. The vertical ribs 3 and the transverse ribs 4 intersect to form a grid shape. However, the gas dynamics of the axial flow fan during the exhaust process are relatively complex. If the air guide surfaces of the vertical ribs 3 and the transverse ribs 4 are both planar structures, the airflow with a centripetal rotation angle will undoubtedly be subject to the resistance of the air guide surfaces of the vertical ribs 3 and the transverse ribs 4, which will increase the airflow pressure loss at the air outlet mesh cover 1 on the one hand, and generate noise on the other hand. Although some patents disclose that the vertical ribs 3 and the transverse ribs 4 are set as a torsion structure to adapt to the movement direction of the airflow, all the vertical ribs 3 and all the transverse ribs 4 use the same torsion angle for air discharge. However, in actual use, when the rotating airflow blown out by the fan 7 is blown out of the air outlet mesh cover 1, the wind pressure and centripetal angle at different positions are not the same, and a large amount of airflow will still be blocked by the air guide surfaces of the vertical ribs 3 and the transverse ribs 4, resulting in air volume loss or noise problems.

[0042] The present invention discloses an outdoor unit, such as Figures 2 to 8 As shown, it includes an air outlet mesh cover 1 and a frame 2, the air outlet mesh cover 1 is arranged on the frame 2, the air outlet mesh cover 1 includes a plurality of vertical ribs 3 and a plurality of transverse ribs 4, the vertical ribs 3 and the transverse ribs 4 are arranged in a grid shape, wherein the transverse ribs 4 are divided into a left torsion portion and a right torsion portion (when the observer is facing the air conditioner outdoor unit) by the vertical vertical center axis of the transverse rib 4, the torsion angles of the left torsion portion and the right torsion portion are opposite, and the torsion angles of the left torsion portion and the right torsion portion are from near the vertical vertical center to the left. The axis is arranged to gradually increase toward the side close to the frame 2, and the transverse rib 4 includes a horizontal center rib 403 arranged at the transverse center of the frame 2 or close to the transverse center of the frame 2. The torsion angle formed by the horizontal center rib 403 and the frame 2 is α, and the torsion angle formed by the transverse rib 4 above the horizontal center rib 403 and the frame 2 is gradually increased. The torsion angle formed by the transverse rib 4 below the horizontal center rib 403 and the frame 2 is gradually increased.

[0043] When applied to the outdoor unit described in the present application, when the airflow with a centripetal rotation angle blown out by the axial flow fan passes through the air outlet mesh cover 1, since the torsion angles of the left torsion portion and the right torsion portion of the transverse rib 4 on the air outlet mesh cover 1 are opposite, the air guide surface of the transverse rib 4 can be tilted to guide the air along the direction of its centripetal angular velocity. For the same transverse rib 4, the torsion angle of the left torsion portion on the transverse rib 4 is gradually increased from close to the vertical vertical center axis to close to the connection side of the left torsion portion and the frame 2, and the torsion angle of the right torsion portion on the transverse rib 4 is gradually increased from close to the vertical vertical center axis to close to the connection side of the right torsion portion and the frame 2; for all the transverse ribs 4 in the frame 2 , a horizontal center rib 403 is arranged at the transverse center of the frame 2 or near the transverse center of the frame 2, and the torsion angle formed at the connection between the horizontal center rib 403 and the frame 2 is α, which is the smallest. The transverse rib 4 arranged above the horizontal center rib 403, as the distance between the transverse rib 4 and the horizontal center rib 403 increases, the torsion angle formed at the connection between the corresponding transverse rib 4 and the frame 2 is gradually increased; similarly, the transverse rib 4 arranged below the horizontal center rib 403, as the distance between the transverse rib 4 and the horizontal center rib 403 increases, the torsion angle formed at the connection between the corresponding transverse rib 4 and the frame 2 is gradually increased. When the fan 7 of the outdoor unit 100 rotates at high speed, the airflow is thrown out by the centrifugal effect generated by the rotation of the blades of the fan 7. Since the fan blades have a certain centrifugal angle, the airflow actually delivered still has a certain rotational angular velocity. The airflow pressure is the smallest near the center of the frame 2, and the airflow pressure is the largest near the connection between the transverse ribs 4 and the frame 2. Due to the centrifugal angle of the fan blades, the airflow pressure is small at the connection between the two ends near the transverse center of the frame 2. As the airflow moves upward and downward, the pressure of the airflow gradually increases. At this time, by reasonably improving the angle of the torsion angle formed at the connection between the transverse ribs 4 and the frame 2, the torsion angle gradually increases as the distance between the transverse ribs 4 and the center of the frame 2 increases, so that the air outlet surface on the transverse rib 4 and the air outlet airflow of the outdoor unit 100 change according to the same or similar rules, reducing the time for the airflow to pass through the air outlet surface and the work stroke of the transverse ribs 4 on the airflow, reducing the loss of air volume, and also greatly reducing the air outlet noise of the outdoor unit 100. Compared with the horizontal air outlet surface before the improvement, it can be reduced by at least 5 to 10 decibels.

[0044] The outdoor unit 100 described in the present invention improves the structure of the air outlet mesh cover 1 so that the air outlet surface on the transverse ribs 4 and the air outlet airflow of the outdoor unit 100 change according to the same or similar rules, reducing the time for the air flow to pass through the air outlet surface and the work stroke of the transverse ribs 4 on the air flow, thereby achieving the purpose of effectively reducing the air outlet noise and air volume loss.

[0045] As an example of the present invention, the rotation direction of the fan 7 of the outdoor unit 100 can be set clockwise or counterclockwise. When the rotation direction of the fan 7 is set counterclockwise, the torsion angle of the left torsion portion is set to a downward torsion shape, and the torsion angle of the right torsion portion is set to an upward torsion shape. Similarly, when the rotation direction of the fan 7 is set clockwise, the torsion angle of the left torsion portion is set to an upward torsion shape, and the torsion angle of the right torsion portion is set to a downward torsion shape. This setting makes the torsion angle of the air outlet surface of the transverse ribs 4 on the air outlet grille 1 compatible with the angle of centrifugal air outlet, ensuring the air outlet effect of the air outlet grille 1 and reducing air volume loss and noise.

[0046] As a preferred example of the present invention, the fan 7 includes a hub 701 and blades 702 arranged on the circumferential side of the hub. As an example of the present invention, three blades 702 are provided, and the three blades 702 have the same shape. The outer contour line of the blade is defined as L1, the center point of L1 is the tangent point, and the outer contour tangent at the tangent point is defined as L2, and the angle between L1 and L2 is β.

[0047] The angle β here is the same as the torsional angle α formed by the horizontal center rib 403 and the frame 2, or α is slightly greater than β, that is, preferably, α=β, or α=β+M, where M is an angle difference parameter set based on experience, and the value range of M is 0.1°~3°. Since the airflow passes through the centrifugal angle of the fan blade 702 before being discharged through the air outlet grille 1, this setting associates the minimum angle α at the connection between the transverse rib 4 and the frame 2, further improving the air outlet effect of the air outlet grille 1 and reducing air volume loss and the generated wind noise.

[0048] As a preferred example of the present invention, the hub 701 of the fan 7 is arranged corresponding to the center of the frame 2, the left torsion portion and the right torsion portion are symmetrically arranged along the vertical vertical center axis of the frame 2, and the transverse ribs 4 on the upper and lower sides of the horizontal center rib 403 are symmetrically arranged along the transverse vertical center axis of the frame 2.

[0049] This arrangement enables the transverse ribs 4 on the upper and lower parts of the air outlet mesh cover 1 to be symmetrically arranged with the transverse vertical central axis as the boundary, and the transverse ribs 4 on the left and right parts of the air outlet mesh cover 1 to be symmetrically arranged with the vertical vertical central axis as the boundary, so that the air outlet resistance of the outdoor unit 100 through the air outlet mesh cover 1 is equal at the symmetrical position, thereby achieving force balance between the upper and lower parts, and the left and right parts of the transverse ribs 4 on the air outlet mesh cover 1, and is less likely to malfunction.

[0050] This arrangement improves the reliability and stability of the air outlet of the outdoor unit 100 through the air outlet mesh cover 1.

[0051] As an example of the present invention, Figure 5 As shown, the torsion angle at the connection between the horizontal central rib 403 and the first side panel 201 of the frame 2 is α, the torsion angle at the connection between the first transverse rib 4 adjacent above the horizontal central rib 403 and the first side panel 201 is α+a, and the torsion angle at the connection between the first transverse rib 4 adjacent above the horizontal central rib 403 and the first side panel 201 is α+b, where b>a. Similarly, the torsion angle at the connection between the horizontal central rib 403 and the second side panel 202 of the frame 2 is α, the torsion angle at the connection between the first transverse rib 4 adjacent above the horizontal central rib 403 and the second side panel 202 is α+a, and the torsion angle at the connection between the first transverse rib 4 adjacent above the horizontal central rib 403 and the second side panel 202 is α+b. The torsional angles between the transverse ribs 4 below the horizontal center rib 403 and the first side panel 201 and the second side panel 202 are symmetrically arranged with the torsional angles between the transverse ribs 4 above the horizontal vertical center axis of the frame 2 and the first side panel 201 and the second side panel 202, and are not repeated here.

[0052] Preferably, the transverse ribs 4 above and / or below the horizontal center rib 403 are evenly distributed on the frame 2, the length L of the transverse rib 4, the height H between any two adjacent transverse ribs 4, the ratio of L to H is in the range of 15~50, the value range of a is 0.1~0.3, and the difference in torsion angle between any two adjacent transverse ribs 4 is ba, 0.1≤ba≤1.

[0053] This arrangement facilitates the processing and manufacturing of the structure while ensuring the air outlet effect, thereby improving production and assembly efficiency.

[0054] As a preferred example of the present invention, the transverse ribs 4 above and / or below the horizontal center rib 403 are evenly distributed on the frame 2, the length L of the transverse rib 4, the height H between any two adjacent transverse ribs 4, the ratio of L to H is in the range of 15~50, the value range of a is 0.1~0.3, and the difference in torsion angle between two adjacent transverse ribs 4 increases with the increase of the distance between them and the horizontal center rib 403, that is, b>2a.

[0055] This arrangement further improves the degree of adaptability and matching between the twisting angle of the air outlet surface of the transverse rib 4 and the angle of the centrifugal air outlet, further improving the air outlet efficiency, reducing wind loss and lowering wind noise.

[0056] As a preferred embodiment of the present invention, the torsion angle formed by the uppermost transverse rib 4 in the frame 2 and the first side panel 201 and the second side panel 202 is no greater than 45°, and the torsion angle formed by the lowermost transverse rib 4 in the frame 2 and the first side panel 201 and the second side panel 202 is no greater than 45°. Preferably, the torsion angle formed by the uppermost transverse rib 4 in the frame 2 and the first side panel 201 and the second side panel 202 is in the range of 10° to 45°, and the torsion angle formed by the lowermost transverse rib 4 in the frame 2 and the first side panel 201 and the second side panel 202 is in the range of 10° to 45°.

[0057] This arrangement, by setting a reasonable angle and combining the structural design of the torsion angle of the transverse rib 4, is conducive to increasing the overall exhaust volume of the outdoor unit 100 and reducing wind noise and wind loss.

[0058] As a preferred example of the present invention, the transverse ribs 4 above and / or below the horizontal center rib 403 include a first rib 401 and a second rib 402, the width of the first rib 401 is greater than the width of the second rib 402, and several second ribs 402 are arranged between two of the first ribs 401, and / or the first ribs 401 and the second ribs 402 are arranged alternately.

[0059] This arrangement significantly improves the strength of the air outlet mesh cover 1, preventing the air outlet mesh cover 1 from being deformed, damaged, or other failures due to wind or external forces when discharging air, thereby improving the reliability and stability of the air outlet mesh cover 1.

[0060] As a preferred example of the present invention, a central reinforcing rib 5 is provided on the air outlet grille 1 at a position corresponding to the hub 701 of the fan 7 .

[0061] This arrangement improves the strength of the air outlet mesh cover 1 without affecting the air outlet effect of the air outlet mesh cover 1, ensures reliable air outlet of the outdoor unit 100, and extends the service life of the outdoor unit 100.

[0062] As a preferred example of the present invention, the vertical rib 3 includes an upper torsion portion 31 and a lower torsion portion 32. The upper torsion portion 31 and the lower torsion portion 32 are symmetrically arranged along the horizontal vertical central axis of the frame 2. The vertical ribs 3 on both sides of the vertical vertical central axis of the frame 2 are symmetrically arranged. The torsion angles and setting structures of the upper torsion portion 31 and the lower torsion portion 32 are similar to the setting structures of the left torsion portion and the right torsion portion, and will not be repeated here.

[0063] Preferably, when the air outlet grille 1 is arranged in a rectangular shape, that is, the setting length of the horizontal rib 4 is greater than the setting length of the vertical rib 3, the vertical rib 3 close to the vertical vertical center axis of the frame 2, the torsion angle at the connection between the upper torsion portion 31 on the vertical rib 3 and the upper end side plate of the frame 2 is less than α.

[0064] This arrangement further improves the degree of adaptability and matching between the outlet surface of the air outlet mesh cover 1 and the centrifugal outlet angle of the airflow, thereby reducing wind loss and outlet wind noise.

[0065] As a preferred example of the present invention, a reinforcement protrusion 6 is provided at the connection between the transverse rib 4 and the vertical rib 3 , and the reinforcement protrusion 6 is provided on a side close to the fan 7 .

[0066] This arrangement further improves the overall strength of the air outlet grille 1, prolongs its service life, and ensures the overall beautiful appearance of the outdoor unit.

[0067] After multiple tests, the applicant obtained comparative data between the improved air outlet grille 1 and the air outlet grille 1 with a horizontal air guide surface in the prior art. Under the same working mode and working power, the data comparison table is as follows:

[0068]

[0069] Through comparative analysis, it can be seen that when the outdoor unit 100 described in the embodiment of the present invention is adopted, under the same working mode and working power, the air outlet volume of the outdoor unit provided by the present invention is significantly higher than the air outlet volume of the outdoor unit of the prior art, and the air outlet noise is significantly lower than the air outlet noise of the outdoor unit of the prior art. It can be seen that after the structural improvement of the air outlet mesh cover 1, the outdoor unit described in the present invention can significantly reduce the wind loss of the outdoor unit and reduce the air outlet noise of the outdoor unit.

[0070] Example 2

[0071] The present invention further discloses an air conditioner, which is equipped with the outdoor unit 100 as described in Example 1.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An outdoor unit, characterized in that: The invention comprises an air outlet mesh cover (1) and a frame (2), wherein the air outlet mesh cover (1) is arranged on the frame (2), and the air outlet mesh cover (1) comprises a plurality of vertical ribs (3) and a plurality of transverse ribs (4), wherein the vertical ribs (3) and the transverse ribs (4) are arranged in a grid shape, wherein the transverse ribs (4) are divided into a left torsion portion and a right torsion portion with the vertical vertical center axis of the frame (2) as a boundary, the torsion angles of the left torsion portion and the right torsion portion are opposite, and the torsion angles of the left torsion portion and the right torsion portion decrease from close to the vertical vertical center axis to close to the frame ( 2) is arranged in a gradually enlarging shape, the transverse rib (4) includes a horizontal center rib (403) arranged at the transverse center of the frame (2) or close to the transverse center of the frame (2), the torsion angle formed by the horizontal center rib (403) and the frame (2) is α, the torsion angle formed by the transverse rib (4) above the horizontal center rib (403) and the frame (2) is arranged in a gradually enlarging shape, and the torsion angle formed by the transverse rib (4) below the horizontal center rib (403) and the frame (2) is arranged in a gradually enlarging shape.

2. The outdoor unit according to claim 1, wherein: A fan (7) is provided inside the outdoor unit, and the fan (7) comprises a hub (701) and fan blades (702) provided on the circumference of the hub. The outer contour line of the fan blade is defined as L1, the center point of L1 is defined as a tangent point, the outer contour tangent line at the tangent point is defined as L2, and the angle between L1 and L2 is β, α=β, or α=β+M, where M is an angle difference parameter set based on experience.

3. The outdoor unit according to claim 2, characterized in that: The hub (701) of the fan (7) is arranged corresponding to the center of the frame (2), the left torsion portion and the right torsion portion are symmetrically arranged along the vertical center axis of the frame (2), and the transverse ribs (4) on the upper and lower sides of the horizontal center rib (403) are symmetrically arranged along the transverse vertical center axis of the frame (2).

4. The outdoor unit according to claim 3, characterized in that: The torsion angle at the connection between the horizontal central rib (403) and the first side plate (201) of the frame (2) is α, the torsion angle at the connection between the first transverse rib (4) adjacent to the horizontal central rib (403) and the first side plate (201) is α+a, and the torsion angle at the connection between the first transverse rib (4) adjacent to the horizontal central rib (403) and the first side plate (201) is α+b, wherein b>a.

5. The outdoor unit according to claim 4, characterized in that: The transverse ribs (4) above and / or below the horizontal central rib (403) are evenly distributed on the frame (2), the length L of the transverse ribs (4), the height H between any two adjacent transverse ribs (4), the ratio of L to H is in the range of 15 to 50, and the value range of a is in the range of 0.1 to 0.3, wherein the difference in torsion angle between any two adjacent transverse ribs (4) is ba, 0.1≤ba≤1, or the difference in torsion angle between any two adjacent transverse ribs (4) increases as the distance from the horizontal central rib (403) increases.

6. The outdoor unit according to claim 5, characterized in that The torsion angle formed by the uppermost transverse rib (4) in the frame (2) and the first side plate (201) and the second side plate (202) of the frame (2) is not greater than 45°, and the torsion angle formed by the lowermost transverse rib (4) in the frame (2) and the first side plate (201) and the second side plate (202) is not greater than 45°.

7. The outdoor unit according to any one of claims 1 to 6, characterized in that: The transverse ribs (4) above and / or below the horizontal central rib (403) include a first rib (401) and a second rib (402), wherein the width of the first rib (401) is greater than the width of the second rib (402), a plurality of the second ribs (402) are arranged between two of the first ribs (401), and / or the first ribs (401) and the second ribs (402) are arranged alternately.

8. The outdoor unit according to claim 7, characterized in that: A central reinforcing rib (5) is provided on the air outlet mesh cover (1) at a position corresponding to the hub (701) of the fan (7).

9. The outdoor unit according to claim 1 or 2 or 3 or 4 or 5 or 6 or 8, characterized in that: The vertical rib (3) comprises an upper twisting portion (31) and a lower twisting portion (32), the upper twisting portion (31) and the lower twisting portion (32) being symmetrically arranged along the transverse vertical center axis of the frame (2), the vertical ribs (3) on both sides of the vertical vertical center axis of the frame (2) being symmetrically arranged, the upper twisting portion (31) and the lower twisting portion (32) being arranged in a shape that gradually increases from close to the transverse vertical center axis to close to the connection side of the vertical rib (3) and the frame (2), and the twisting angle of the vertical rib (3) being arranged in a shape that gradually increases from a position close to the vertical vertical center axis to a position away from the vertical vertical center axis.

10. An air conditioner, characterized in that: The air conditioner is equipped with the outdoor unit according to any one of claims 1 to 9.

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