Air outlet mesh enclosure, air conditioner outdoor unit and air conditioner

Abstract

The utility model discloses an air outlet net cover, an air conditioner outdoor unit and an air conditioner. The air outlet net cover comprises a cover body and a grating. The cover body is provided with an annular air guide face and an air guide channel located in the middle of the air guide face, and the air guide channel is provided with an air inlet and an air outlet. The grating is arranged in the air outlet channel, and air guide holes are formed between the outer contour of the grating and the air guide face. And the aperture of the air guide surface is gradually increased in the direction from the air inlet to the air outlet. Specifically, the air guide face is in a gradually-expanding shape in the air outlet direction, and when airflow in the air guide channel passes through the air guide hole, the airflow at the air guide hole can flow in the direction away from the middle of the air guide channel under the guidance of the air guide face. Due to the fact that air flow at the air guide holes flows outwards, vortex air flow towards the middle of the air guide channel is difficult to generate when the air flow acts with air around the cover body so as to hinder flowing of the air flow, the possibility that the vortex air flow towards the middle of the air guide channel is generated at the air guide holes is reduced, air flow resistance is relatively reduced, and air guide efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air outlet equipment, in particular to an air outlet net cover, an air conditioner outdoor unit and an air conditioner. Background Art

[0002] In the air conditioner outdoor unit system, for safety reasons, an air outlet grille needs to be set outside the rotating impeller. The existing air outlet grille is mostly composed of a grille and a cover body arranged around the grille to guide the air and isolate the impeller. However, research has found that a vortex-shaped airflow will form at the outer edge of the air outlet grille, which will increase the flow resistance and reduce the fan efficiency. Utility Model Content

[0003] The main purpose of the utility model is to provide an air outlet mesh cover, aiming to reduce the flow resistance when the air outlet mesh cover is used in an outdoor unit of an air conditioner and improve the air guiding efficiency.

[0004] In order to achieve the above-mentioned purpose, the air outlet mesh cover proposed by the utility model comprises:

[0005] A cover body, wherein the cover body has an annular wind guide surface and a wind guide channel located in the middle of the wind guide surface, and the wind guide channel has an air inlet and an air outlet; and

[0006] A grille, the grille is arranged in the air outlet channel, and there is an air guide hole between the outer contour of the grille and the air guide surface;

[0007] In a direction from the air inlet to the air outlet, the diameter of the air guide surface gradually increases.

[0008] In some embodiments, on a radial plane of the air guiding channel, a projection of the air guiding surface is an arc.

[0009] In some embodiments, the radius of the arc is not less than 20 mm and not more than 30 mm.

[0010] In some embodiments, the cover body includes an annular wind guide portion and a mounting portion, the wind guide portion having the wind guide surface, the mounting portion being located on a side of the wind guide portion away from the wind guide channel, a groove facing away from the wind guide channel is formed between the wind guide portion and the mounting portion, and the groove is located on a side of the mounting portion close to the air outlet.

[0011] In some embodiments, the grille includes a first grille body and a plurality of second grille bodies, the first grille body is arranged in a ring shape, the plurality of second grille bodies are arranged around the center of the air guide channel, and the first grille body is fixedly connected to the second grille body.

[0012] In some embodiments, in a direction from the air inlet to the air outlet, an inner diameter of the first grille gradually increases, and / or an outer diameter of the first grille gradually decreases.

[0013] In some embodiments, there are multiple first grid bodies, and the multiple first grid bodies are arranged radially along the air guiding channel, and the second grid body is arranged between two adjacent first grid bodies or between the first grid body and the air guiding surface.

[0014] In some embodiments, the grille is integrally connected to the cover body, and the grille is fixed on the wind guide surface.

[0015] The utility model also provides an air conditioner outdoor unit, comprising an air outlet mesh cover as described in any of the above embodiments.

[0016] The utility model also provides an air conditioner, comprising the air conditioner outdoor unit as described in the above embodiment.

[0017] Specifically, the air guide surface is gradually expanded along the air outlet direction, and when the airflow in the air guide channel passes through the air guide hole, the airflow at the air guide hole can flow in the direction of the air guide surface away from the middle of the air guide channel. Since the airflow at the air guide hole flows outward, it is difficult for the airflow to generate a vortex airflow toward the middle of the air guide channel when it interacts with the air around the cover body, thereby hindering the flow of air. By adopting the technical solution of this embodiment, the possibility of generating a vortex airflow toward the middle of the air guide channel at the air guide hole can be reduced through the design of the air guide surface, which relatively reduces the airflow resistance and improves the air guide efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of an embodiment of the air outlet mesh cover of the utility model;

[0020] Figure 2 for Figure 1 Sectional view at AA in the middle;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of the T in the middle;

[0022] Figure 4 It is a line graph of air volume and power of the original mesh cover and the air outlet mesh cover of an embodiment;

[0023] Figure 5 It is a line graph of the air volume and noise of the original mesh cover and the air outlet mesh cover of an embodiment.

[0024] Description of Figure Numbers:

[0025] 100-air outlet grille, 100a-air guide hole;

[0026] 110-cover body, 110a-wind guide channel, 110a1-air inlet, 110a2-air outlet, 110b-groove, 112-wind guide portion, 112a-wind guide surface, 114-installation portion;

[0027] 120 - grid, 122 - first grid body, 124 - second grid body.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] See also Figures 1 to 3The utility model proposes an air outlet mesh cover 100, comprising a cover body 110 and a grille 120; the cover body 110 has an annular air guide surface 112a and an air guide channel 110a located in the middle of the air guide surface 112a, and the air guide channel 110a has an air inlet 110a1 and an air outlet 110a2; the grille 120 is arranged in the air outlet channel, and there is an air guide hole 100a between the outer contour of the grille 120 and the air guide surface 112a; from the air inlet 110a1 to the air outlet 110a2, the diameter of the air guide surface 112a gradually increases.

[0033] The air outlet mesh cover 100 in this embodiment is used to be installed in an air outlet device, such as an air conditioner outdoor unit, an industrial fan, etc., to guide the air and improve safety. The air conditioner outdoor unit is used as an example for explanation below.

[0034] Specifically, the air guide surface 112a is gradually expanded along the air outlet direction. When the airflow in the air guide channel 110a passes through the air guide hole 100a, the airflow at the air guide hole 100a can flow in the direction of the air guide surface 112a to guide the airflow away from the middle of the air guide channel 110a. Since the airflow at the air guide hole 100a flows outward, it is difficult for the airflow to generate a vortex airflow toward the middle of the air guide channel 110a when it interacts with the air around the cover body 110, so as to hinder the flow of air. By adopting the technical solution of this embodiment, through the design of the air guide surface 112a, the possibility of generating a vortex airflow toward the middle of the air guide channel 110a at the air guide hole 100a can be reduced, the airflow resistance is relatively reduced, and the air guide efficiency is improved.

[0035] like Figure 3 As shown, in some embodiments, on the radial plane of the air guide channel 110a, the projection of the air guide surface 112a is an arc. In other words, the air guide surface 112a is an arc surface. Such a design can make the airflow gradually diffuse at the air guide hole 100a, further reducing the possibility of vortex airflow.

[0036] Optionally, the radius of the arc is not less than 20 mm and not more than 30 mm. For example, the radius of the arc is 20 mm, 24 mm, 27 mm or 30 mm.

[0037] Please refer to the table below, which compares the wind speed of the original mesh cover in the prior art and the air outlet mesh cover 100 of this embodiment under different rotation speed conditions. The original mesh cover does not adopt the wind guide surface 112a structure of this embodiment, and there is a greater probability of generating rotating airflow around the cover body 110.

[0038]

[0039] The unit of speed is revolutions per minute, and the unit of air volume is cubic meter.

[0040] It can be seen that at the same rotation speed, the air volume output by the air outlet grille 100 in this embodiment is significantly improved, and the difference is about 1.97% of the air volume output by the original grille.

[0041] Please continue reading Figure 4 , Figure 4 The figure shows the power consumption comparison between the original mesh cover and the outlet mesh cover 100 of this embodiment under different air volumes. When the output air volume is greater than 1600m3, the vortex airflow generated by the original mesh cover has a relatively high blocking effect on the output airflow, and the outlet mesh cover 100 of this embodiment consumes less power. For example, under the condition that the output air volume is 2800m3, the power of the original mesh cover is 70.5w, and the power of the outlet mesh cover 100 of this embodiment is 66.6w, which is reduced by 3.9w, about 5.53%.

[0042] Please continue reading Figure 5 , Figure 5 The figure shows the comparison of the noise generated by the original mesh cover and the outlet mesh cover 100 of the present embodiment under different air volumes. When the output air volume is greater than 1600m3, the noise generated by the original mesh cover is relatively higher. For example, under the condition that the output air volume is 2800m3, the noise of the original mesh cover is 52.27dB, and the noise of the outlet mesh cover 100 of the present embodiment is 51.72dB, which is reduced by 0.55dB.

[0043] In summary, the technical solution of this embodiment can not only increase the output air volume, but also achieve the technical effect of reducing output power and noise. In addition, it can be seen from these data that the changes in air volume, power and noise are relatively small, and it is not easy for technicians in this field to find these subtle changes, so it is creative to find this technical problem.

[0044] In other embodiments, the projection of the wind guide surface 112a on the radial plane of the wind guide channel 110a is a straight line. The angle between the straight line and the axis of the wind guide channel 110a is not greater than 30°. The angle between the straight line and the axis of the wind guide channel 110a is 0°, 10°, 20° or 30°.

[0045] In other embodiments, the projection of the wind guide surface 112a on the radial plane of the wind guide channel 110a is a combination of a straight line and an arc. For example, the end of the wind guide surface 112a close to the air inlet is a straight line, and the end of the wind guide surface 112a close to the air outlet is an arc tangent to the straight line. The angle between the straight line and the axis of the wind guide channel 110a is not greater than 30°, and the radius of the arc is not less than 20 mm and not greater than 30 mm.

[0046] For example, the angle between the straight line and the axis of the air guiding channel 110a is 0°, 10°, 20° or 30°; the radius of the arc is 20 mm, 24 mm, 27 mm or 30 mm.

[0047] Please continue reading Figure 3 In some embodiments, the cover body 110 includes an annular wind guide portion 112 and a mounting portion 114, the wind guide portion 112 has an wind guide surface 112a, the mounting portion 114 is located on the side of the wind guide portion 112 away from the wind guide channel 110a, and a groove 110b is formed between the wind guide portion 112 and the mounting portion 114, which is away from the wind guide channel 110a, and the groove 110b is located on the side of the mounting portion 114 close to the air outlet 110a2.

[0048] In this embodiment, the mounting portion 114 forms a flange structure, which can be used to fit with the face frame of the air conditioner outdoor unit so that the air guide channel 110a is connected with the air guide cavity of the face frame, while also reducing the possibility of airflow flowing out of the gap between the mounting portion 114 and the face frame.

[0049] In addition, in this embodiment, the size of the groove 110 b is designed so that the thickness of the air guide portion 112 and the mounting portion 114 remain consistent, thereby reducing the possibility of stress concentration on the cover body 110 .

[0050] Furthermore, the mounting portion 114 is located at one end of the air guiding portion 112 close to the air inlet 110 a 1 .

[0051] like Figure 1 As shown, in some embodiments, the grille 120 includes a first grille 122 and a plurality of second grilles 124 . The first grille 122 is arranged in a ring shape, and the plurality of second grilles 124 are arranged around the center of the air guide channel 110 a . The first grille 122 is fixedly connected to the second grille 124 .

[0052] In this embodiment, the first grid body 122 and the second grid body 124 form a mesh structure to prevent the user from contacting the fan structure inside the air conditioner outdoor unit, and the gap formed between the adjacent second grid bodies 124 and the second grid bodies 124 can be used for air outlet. Among them, the first grid body 122 can play a role in supporting the second grid body 124 to improve the structural strength of the second grid body 124.

[0053] In order to improve the wind guiding effect, the second grid body 124 may have a certain curvature.

[0054] In addition, a through hole is provided in the middle of the grille 120, and the through hole can be used to place some identification parts and other structures.

[0055] like Figure 3 As shown, in some embodiments, the inner diameter of the first grille 122 gradually increases and / or the outer diameter of the first grille 122 gradually decreases from the air inlet 110a1 to the air outlet 110a2.

[0056] In this embodiment, only the inner diameter of the first grid body 122 may be gradually increased, or only the outer diameter of the first grid body 122 may be gradually decreased, or both may be performed simultaneously.

[0057] By adopting the technical solution of this embodiment, the first grid body 122 can form a flared structure on the side close to the air guiding channel 110a or the side away from the air guiding channel 110a, which can also guide the airflow, thereby reducing the obstruction of the first grid body 122 to the airflow and further improving the air outlet intensity.

[0058] Please continue reading Figure 1 In some embodiments, there are multiple first grid bodies 122, and the multiple first grid bodies 122 are arranged radially along the wind guide channel 110a, and the second grid body 124 is arranged between two adjacent first grid bodies 122 or between a first grid body 122 and the wind guide surface 112a.

[0059] In this embodiment, two adjacent first grille bodies 122 and a plurality of second grille bodies 124 therein form a ring, and the number and placement of the second grille bodies 124 in different rings may be different, so that the second grille bodies 124 in different rings have certain unevenness. In this way, the aesthetics of the grille 120 can be improved on the one hand, and the obstruction effect of the second grille bodies 124 on the airflow can be reduced on the other hand.

[0060] In some embodiments, the grille 120 is integrally connected to the cover body 110 , and the grille 120 is fixed on the wind guide surface 112 a .

[0061] Specifically, the air outlet mesh cover 100 can be formed into one piece with the grille 120 and the cover body 110 by injection molding. Relatively speaking, the cost of manufacturing the air outlet mesh cover 100 is lower.

[0062] In other embodiments, the air outlet mesh cover 100 may further include a fixing member, and the grille 120 is fixed to the cover body 110 via the fixing member.

[0063] The utility model further provides an air conditioner outdoor unit, comprising an air outlet mesh cover 100 as described in any of the above embodiments.

[0064] The utility model also provides an air conditioner, comprising an air conditioner outdoor unit as described in the above embodiment.

[0065] The specific structure of the air-conditioning outdoor unit and the air outlet mesh cover 100 in the air-conditioning is referred to the above-mentioned embodiments. Since the air-conditioning outdoor unit and the air-conditioning adopt all the technical solutions of all the above-mentioned embodiments, they at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0066] 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 changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An air outlet grille, characterized in that: include: A cover body, wherein the cover body has an annular wind guide surface and a wind guide channel located in the middle of the wind guide surface, and the wind guide channel has an air inlet and an air outlet; as well as A grille, the grille being arranged in the air guide channel, and an air guide hole being provided between the outer contour of the grille and the air guide surface; In a direction from the air inlet to the air outlet, the diameter of the air guide surface gradually increases.

2. The air outlet grille according to claim 1, characterized in that: On the radial plane of the air guiding channel, the projection of the air guiding surface is an arc.

3. The air outlet grille according to claim 2, characterized in that: The radius of the arc is not less than 20 mm and not more than 30 mm.

4. The air outlet grille according to claim 1, characterized in that: The cover body includes an annular wind guide portion and a mounting portion, the wind guide portion having the wind guide surface, the mounting portion being located on a side of the wind guide portion away from the wind guide channel, a groove facing away from the wind guide channel being formed between the wind guide portion and the mounting portion, and the groove being located on a side of the mounting portion close to the air outlet.

5. The air outlet grille according to any one of claims 1 to 4, characterized in that: The grille includes a first grille body and a plurality of second grille bodies, the first grille body is arranged in a ring shape, the plurality of second grille bodies are arranged around the center of the air guide channel, and the first grille body is fixedly connected to the second grille body.

6. The air outlet grille according to claim 5, characterized in that: In a direction from the air inlet to the air outlet, the inner diameter of the first grille gradually increases, and / or the outer diameter of the first grille gradually decreases.

7. The air outlet grille according to claim 5, characterized in that: There are multiple first grid bodies, and the multiple first grid bodies are arranged in a radial direction of the air guide channel. The second grid body is arranged between two adjacent first grid bodies or between the first grid body and the air guide surface.

8. The air outlet grille according to any one of claims 1 to 4, characterized in that: The grille is integrally connected to the cover body, and the grille is fixed on the wind guide surface.

9. An air conditioner outdoor unit, characterized in that: It comprises the air outlet mesh cover as described in any one of claims 1 to 8.

10. An air conditioner, characterized in that: Comprising the air conditioner outdoor unit as described in claim 9.

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