Volute tongue for indoor unit of air conditioner

Abstract

The utility model discloses a volute tongue for an indoor unit of an air conditioner, which comprises a volute tongue body and a plurality of groups of flow guide parts, the middle part of the front surface of the volute tongue body is bent inwards to form an air guide surface, the air guide surface extends along the length direction of the volute tongue body, and the plurality of groups of flow guide parts are arranged on the air guide surface; when the volute tongue works, air outlet airflow flows to the air guide face, is divided by the first flow guide ribs and the second flow guide ribs to form multiple strands of airflow and enters the different first flow guide grooves and the second flow guide grooves, noise frequencies generated by the multiple strands of airflow are different, and therefore superposition of the noise frequencies can be reduced, and noise is reduced; and then, the airflow entering the first flow guide groove is tightly attached to the surface of the first flow guide rib, and the airflow entering the second flow guide groove is tightly attached to the surface of the second flow guide rib, so that doping with surrounding airflow is reduced, large energy fluctuation is avoided, and noise is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to refrigeration equipment technical field especially is related to a volute tongue for air conditioner indoor unit. BACKGROUND

[0002] With the continuous improvement of people's living standards, people's demand for material is also higher and higher, people have higher requirements for the appearance and quality of air conditioner, noise as an important index of customer experience when air conditioner is running, is also more and more concerned by people, it is found through research that volute tongue has great influence on the noise generation when air conditioner indoor unit is running, the existing air conditioner volute tongue, including the volute tongue body for being arranged in the indoor unit body and corresponding with the volute, the one side of volute tongue body towards the center in volute is the air guide surface, a plurality of flow guide ribs are arranged on the air guide surface and are spaced along the length direction of volute tongue body, the flow guide rib is arranged along the circumference of air guide surface, that is, the flow guide rib and the cross section of volute tongue body are parallel to each other, the air conditioner volute tongue with the above structure has not obvious noise reduction effect in the use process, and when the wind speed is large or the rotation speed of cross flow fan has fluctuation, the impact of airflow on volute is obvious, thereby causing large noise, and air backflow is also caused, the volute tongue of the utility model discloses a kind of air conditioners, belong to air conditioner air duct structure component technical field, the volute tongue body is included, the outer surface of volute tongue body includes volute air guide surface and volute wind shield surface, volute air guide surface and volute wind shield surface are connected by volute tip windward surface to form smooth transition continuous curved surface, volute tip windward surface is rounded corner structure, the outer surface of volute tongue body is provided with a plurality of volute guide grooves, volute guide grooves are arranged along the length direction of volute tongue body, the starting point of each volute guide groove is located at the junction of volute tip windward surface and volute air guide surface, the end of each volute guide groove is located at volute wind shield surface, the width of volute guide groove gradually decreases in the direction from starting point to end, the flow guide groove of the volute tongue is all parallel, the impact of airflow on volute is obvious, thereby causing large noise. SUMMARY

[0003] In view of the defects of the prior art, the utility model aims at providing a volute tongue for air conditioner indoor unit, which has more uniform airflow and lower cost.

[0004] To achieve the above object, the utility model provides a scheme that a volute tongue for air conditioner indoor unit, including volute tongue body, a plurality of groups of flow guide piece, the middle part of the front of volute tongue body is inwards bent and forms the air -guiding surface, the air -guiding surface extends along volute tongue body length direction, a plurality of groups of flow guide piece are provided on the air -guiding surface, a plurality of groups of flow guide piece are sequentially spaced and arranged along volute tongue body length direction, each group of flow guide piece all includes first flow guide part and second flow guide part, first flow guide part and second flow guide part jointly constitute the structure of eight characters, first flow guide part includes a plurality of first flow guide ribs, forms first flow guide groove between every two adjacent first flow guide ribs, second flow guide part includes a plurality of second flow guide ribs, forms second flow guide groove between every two adjacent second flow guide ribs, first flow guide groove and second flow guide groove are all used to guide the airflow that impacts on the air -guiding surface to discharge.

[0005] The utility model discloses the beneficial effects that compared with the prior art, when the volute tongue works, the air flow of outlet air flow is guided to the air -guiding surface, is divided into a plurality of air flows by first flow guide rib and second flow guide rib respectively, enters different first flow guide groove and second flow guide groove, the noise frequency of a plurality of air flows is different, can therefore reduce the superposition of noise frequency, thereby reduce the noise, then, the airflow that enters first flow guide groove is close to the surface of first flow guide rib, the airflow that enters second flow guide groove is close to the surface of second flow guide rib, reduces the adulteration with surrounding airflow, avoids the greater energy fluctuation, reduces the noise, moreover, the air flow is discharged along first flow guide groove and second flow guide groove outward, guarantees the uniformity of outlet air flow, avoids the gas circulation flow in the air -conditioning volute, can also avoid the gas backflow, finally, compared with the cross section of the traditional volute tongue, the number of first flow guide rib and second flow guide rib of this volute tongue is fewer, but realizes the same function, so the material consumption can be reduced, thereby reducing the cost of material.

[0006] Further, the air conditioner indoor unit is provided with a mounting portion, the top of the back of the volute tongue body is bent and formed into a first connecting portion, the bottom of the back of the volute tongue body is bent and formed into a second connecting portion, the first connecting portion and the second connecting portion jointly connect the mounting portion to realize detachable mounting of the volute tongue body in the air conditioner indoor unit.

[0007] Further, the first connecting portion has a hook-shaped cross section. The above structure facilitates the buckle connection between the volute tongue body and the mounting portion.

[0008] Further, the second connecting portion has a strip-shaped cross section.

[0009] Further, the width of the first flow guide rib and the second flow guide rib is 2-4 mm.

[0010] Further, the height of the first and second flow guide ribs is 2-5mm.

[0011] Further, the width of the first and second flow guide grooves is 1-3mm.

[0012] Further, the included angle between the first and second flow guide parts is 70-150°.

[0013] Further, the flow guide part is integrally formed with the volute tongue body.

[0014] Further, the flow guide part is detachably connected with the volute tongue body. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural view of the volute tongue of the present application installed in an air conditioner indoor unit.

[0016] Figure 2 is a front view of the present application.

[0017] Figure 3 is a side view of the present application.

[0018] Figure 4 is Figure 3 is an enlarged view of A in the middle.

[0019] Figure 5 is a noise spectrum comparison chart of the present application and a conventional volute tongue at a low wind speed.

[0020] Figure 6 is a noise spectrum comparison chart of the present application and a conventional volute tongue at a high wind speed.

[0021] Wherein, 1 is a volute tongue body, 11 is a first connecting part, 12 is a second connecting part, 13 is a flow guide surface, 2 is a flow guide part, 211 is a first flow guide rib, 212 is a first flow guide groove, 221 is a second flow guide rib, 222 is a second flow guide groove, 3 is a mounting part, and 4 is a fan blade. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] In the description of the utility model, it is necessary to explain that the orientation or positional relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] Referring to the drawings Figure 1 to the drawings Figure 4 As shown in the drawings, a volute tongue for an air conditioner indoor unit comprises a volute tongue body 1, a plurality of groups of flow guide members 2, a wind guide surface 23 is formed on the middle part of the front surface of the volute tongue body 1 by inwardly bending, the wind guide surface 23 extends along the length direction of the volute tongue body 1, a plurality of groups of flow guide members 2 are arranged on the wind guide surface 23, the plurality of groups of flow guide members 2 are arranged in sequence and at intervals along the length direction of the volute tongue body 1, each group of flow guide members 2 comprises a first flow guide part and a second flow guide part, the first flow guide part and the second flow guide part jointly form an eight-shaped structure, the first flow guide part comprises a plurality of first flow guide ribs 211, a first flow guide groove 212 is formed between every two adjacent first flow guide ribs 211, the second flow guide part comprises a plurality of second flow guide ribs 221, a second flow guide groove 222 is formed between every two adjacent second flow guide ribs 221, and the first flow guide groove 212 and the second flow guide groove 222 are used for guiding the airflow impacting on the wind guide surface 23 to be discharged.

[0025] In the embodiment, a mounting part 3 is arranged in the air conditioner indoor unit, a first connecting part 11 is formed by bending the top part of the back surface of the volute tongue body 1, a second connecting part 12 is formed by bending the bottom part of the back surface of the volute tongue body 1, the first connecting part 11 and the second connecting part 12 jointly connect the mounting part 3 to realize that the volute tongue body 1 can be detachably mounted in the air conditioner indoor unit.

[0026] In the embodiment, the cross section of the first connecting part 11 is in the form of a hook, and the cross section of the second connecting part 12 is in the form of a strip.

[0027] In the embodiment, the width of the first flow guide rib 211 and the second flow guide rib 221 is 2-4 mm, and is preferably 2.5-3 mm.

[0028] In the embodiment, the height of the first flow guide rib 211 and the second flow guide rib 221 is 2-5 mm, and is preferably 3-3.5 mm.

[0029] In the embodiment, the width of the first flow guide groove 212 and the second flow guide groove 222 is 1-3 mm, and is preferably 2-2.5 mm.

[0030] In this embodiment, the included angle between the first guide portion and the second guide portion is in the range of 70°~150°, with the optimum being 90°~120°.

[0031] In this embodiment, the connection between the flow guide 2 and the volute tongue body 1 can be varied. The flow guide 2 and the volute tongue body 1 can be integrally formed, or the flow guide 2 can be detachably connected to the volute tongue body 1.

[0032] When the indoor unit of the air conditioner is operating, the airflow flows to the air guide surface 23 of the volute body 1. Then, the airflow is divided by multiple first guide ribs 211 to form multiple airflows that enter different first guide channels 212, and by multiple second guide ribs 221 to form multiple airflows that enter different second guide channels 222. The noise frequencies generated by the multiple airflows are different, so the superposition of noise frequencies can be reduced, thereby reducing noise.

[0033] Secondly, the airflow entering the first guide groove 212 is close to the surface of the first guide rib 211, and the airflow entering the second guide groove 222 is close to the surface of the second guide rib 221, which reduces the mixing with the surrounding airflow, avoids large energy fluctuations, and reduces noise. On the other hand, the airflow is discharged outward along the first guide groove 212 and the second guide groove 222, which ensures the uniformity of the airflow and avoids the gas circulating in the air conditioner casing, while also preventing gas backflow.

[0034] Finally, the figure-eight structure of the guide member 2 has fewer guide ribs compared to the traditional guide ribs. Moreover, the first guide rib 211 and the second guide rib 221, which are set at an angle, have the same function as the traditional volute tongue with a large number of guide ribs that are parallel to each other in cross-section. This reduces the number of guide ribs 221 and lowers the material cost.

[0035] The guide ribs of the first and second guide sections extend in different directions, making the overall guide section form an "eight" shape. However, the first guide ribs 211 adjacent to each other may not be parallel, and the second guide ribs 211 adjacent to each other may not be parallel. That is, the inclination angles of the two first guide ribs 211 and the two second guide ribs 211 relative to the cross section in the width direction of the volute tongue are inconsistent. This makes the gap space between the structure of the volute tongue body 1 and the fan blade 4 of the air conditioner indoor unit different in axial position, so that the noise frequency generated by the airflow at this point is also inconsistent, reducing the peak noise of the fan blade 4.

[0036] Compared with existing technologies, the figure-eight structure of the air guide 2 mainly reduces the rotational noise of the indoor unit fan blades of the wall-mounted air conditioner and improves the noise quality, especially at low speeds.

[0037] When the fan speed is set to low and high, the noise level of the indoor air conditioner unit is tested using the volute of this invention and the volute of existing technology. Figure 5 andFigure 6 As shown, the air conditioner indoor unit with the volute tongue of the embodiment has less noise during operation, and can reduce 1-3 decibels of noise under the same operating condition relative to the air conditioner indoor unit with the prior volute tongue.

[0038] The above-described embodiments are only preferred embodiments of the present application, and do not limit the present application in any form. Any person skilled in the art can make more possible changes and decorations to the technical scheme of the present application, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical scheme of the present application, by using the disclosed technical content. Therefore, any equivalent changes made according to the idea of the present application, without departing from the content of the technical scheme of the present application, should be covered within the protection scope of the present application.

Claims

1. A volute tongue for an air conditioner indoor unit, comprising a volute tongue body (1) and a plurality of groups of flow guide members (2), characterized in that: The front middle part of the volute tongue body (1) is inwardly bent to form a wind guide surface (23), the wind guide surface (23) extends along the length direction of the volute tongue body (1), a plurality of groups of flow guide pieces (2) are arranged on the wind guide surface (23), the plurality of groups of flow guide pieces (2) are sequentially and spacedly arranged along the length direction of the volute tongue body (1), each group of flow guide pieces (2) includes a first flow guide part and a second flow guide part, the first flow guide part and the second flow guide part jointly form a spade-shaped structure, the first flow guide part includes a plurality of first flow guide ribs (211), a first flow guide groove (212) is formed between every two adjacent first flow guide ribs (211), the second flow guide part includes a plurality of second flow guide ribs (221), a second flow guide groove (222) is formed between every two adjacent second flow guide ribs (221), and the first flow guide groove (212) and the second flow guide groove (222) are used for guiding the airflow impinging on the wind guide surface (23) to be discharged.

2. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The air conditioner indoor unit is provided with a mounting part (3), the top of the back of the volute tongue body (1) is bent to form a first connecting part (11), the bottom of the back of the volute tongue body (1) is bent to form a second connecting part (12), and the first connecting part (11) and the second connecting part (12) jointly connect the mounting part (3) to realize that the volute tongue body (1) can be detachably mounted in the air conditioner indoor unit.

3. The volute tongue for the indoor unit of the air conditioner according to claim 2, characterized in that: The first connecting part (11) has a hook-shaped structure in cross section.

4. The volute tongue for the indoor unit of the air conditioner according to claim 2, characterized in that: The second connecting part (12) has a strip-shaped structure in cross section.

5. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The width of the first flow guide rib (211) and the second flow guide rib (221) is 2-4 mm.

6. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The height of the first flow guide rib (211) and the second flow guide rib (221) is 2-5 mm.

7. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The width of the first flow guide groove (212) and the second flow guide groove (222) is 1-3 mm.

8. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The included angle between the first flow guide part and the second flow guide part is 70-150°.

9. The volute tongue for the indoor unit of the air conditioner according to claim 1, characterized in that: The flow guide piece (2) is integrally formed with the volute tongue body (1).

10. The volute tongue for an indoor unit of an air conditioner according to claim 1, characterized in that: The flow guide piece (2) is detachably connected with the volute tongue body (1).

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