CN218348838U - Volute tongue structure, air conditioning module and air conditioning range hood - Google Patents

Abstract

The utility model relates to a snail tongue structure, air conditioning module and air conditioning cigarette machine. The volute tongue structure comprises a body and a plurality of guide plates. The body has the water conservancy diversion face, and the guide plate sets up on the water conservancy diversion face along the length direction interval of body. Wherein, a flow passage is defined between every two adjacent guide plates to guide the airflow flowing through the body. When the airflow flows through the flow guide surface of the body, the flow guide channels formed at intervals by the flow guide plates arranged on the flow guide surface of the body can guide the airflow, so that the airflow can flow along the flow guide surface in an ideal direction. So, on the one hand, the baffle can reduce effectively and blow the turbulent degree of the air current of body, avoids the surge, reduces the noise. On the other hand, when the air flow passes through the overflowing channel between the guide plates, the air flow is limited by the guide plates, so that the mixing of the surrounding air flow can be effectively reduced, the obvious fluctuation of energy is avoided, and the noise is further reduced.

Description

Volute tongue structure, air conditioning module and air conditioning range hood

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a snail tongue structure, air conditioning module and air conditioning cigarette machine.

Background

With the improvement of the requirements of people on living quality, the air-conditioning smoke machine is more and more widely used in kitchens. The air conditioner cigarette machine not only can be taken away the oil smoke that the culinary art produced, purifies the kitchen environment, can also adjust the temperature in kitchen, improves the culinary art of user in the kitchen and experiences.

When the air-conditioning range hood is started, airflow generated by a fan of the air-conditioning range hood is blown out through the air outlet, and in order to prevent the air from circularly flowing in the volute, a volute tongue is usually arranged at the air outlet so as to more fully guide the airflow to the outside of the air outlet. However, when the airflow passes through the volute tongue, the airflow may impact the volute tongue, thereby generating noise. Moreover, the air outlet of the air-conditioning cigarette machine is often closer to a cooker, so that the negative influence caused by noise is particularly obvious.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a volute tongue structure, an air conditioning module and an air conditioning range hood that can reduce noise.

A volute tongue structure for use in an air conditioning module in a range hood air conditioner, the volute tongue structure comprising:

a body having a flow guide surface; and

the guide plates are arranged on the guide surface at intervals along the length direction of the body;

and an overflowing channel is defined between every two adjacent baffles so as to guide the airflow flowing through the body.

According to the volute tongue structure, in the process that the airflow flows to the flow guide surface of the body, the flow guide channels formed at intervals by the flow guide plates arranged on the flow guide surface of the body can guide the airflow, so that the airflow can flow along the flow guide surface in an ideal direction. So, on the one hand, the baffle can reduce effectively and blow the turbulent degree of the air current of body, avoids the surge, reduces the noise. On the other hand, when the air flow passes through the overflowing channel between the guide plates, the air flow is limited by the guide plates, so that the mixing of the surrounding air flow can be effectively reduced, the obvious fluctuation of energy is avoided, and the noise is further reduced.

In one embodiment, the flow guide surface comprises a windward surface facing the wind wheel in the air-conditioning module, an air supply surface facing the air outlet channel in the air-conditioning module, and a transition curved surface smoothly connected between the windward surface and the air supply surface.

In one embodiment, the deflector comprises a first top surface positioned above the windward side;

and in the direction that the transition curved surface points to the windward side, the height of the first top surface relative to the flow guide surface gradually decreases.

In one embodiment, the descending slope of the height of the first top surface relative to the flow guiding surface in the direction in which the transition curved surface points to the windward side gradually decreases.

In one embodiment, the baffle further comprises a second top surface at least partially above the blend curve;

and in the direction that the transition curved surface points to the air supply surface, the height of the second top surface relative to the flow guide surface gradually decreases.

In one embodiment, the second top surface is located within a spatially extending surface of the air supply surface.

In one embodiment, the air deflector further includes a transition top surface, the transition top surface is smoothly connected between the first top surface and the second top surface, and one ends of the first top surface and the second top surface, which are far away from the transition top surface, are smoothly connected with the windward surface and the air supply surface respectively.

An air conditioning module comprises the volute tongue structure.

In one embodiment, the air conditioning module further includes an air duct housing and a wind wheel, the volute tongue structure is disposed on the air duct housing and defines an air duct cavity and an air outlet channel communicated with the air duct cavity together with the air duct housing, and the wind wheel is at least partially located in the air duct cavity.

An air conditioning cigarette machine, includes foretell air conditioning module.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of a part of an air conditioning module according to an embodiment of the present invention;

FIG. 2 is a cross-sectional schematic view of the air conditioning module shown in FIG. 1;

FIG. 3 isbase:Sub>A schematic cross-sectional view A-A of the air conditioning module shown in FIG. 1;

FIG. 4 is an enlarged schematic view of the air conditioning module of FIG. 1 at C;

FIG. 5 is a schematic view of another angular configuration of the duct housing of the air conditioning module shown in FIG. 1;

FIG. 6 is an enlarged schematic view of the air duct housing shown in FIG. 1 at E.

Description of the reference numerals: 100. an air conditioning module; 10. a volute tongue structure; 11. a body; 13. a baffle; 30. an air duct housing; 50. a cross flow wind wheel; 71. evaporating fins; 73. a mounting base; F. an air duct cavity; D. an air outlet channel; s, a flow guide surface; s1, facing the wind; s2, an air supply surface; s3, transition curved surfaces; G. an overflow channel; t1, a first top surface; t2, a second top surface; t3, transition top surface.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1 and 2, an embodiment of the present invention provides an air-conditioning range hood (not shown) and an air-conditioning module 100. The air conditioning cigarette machine comprises an air conditioning module 100 and a cigarette machine module, wherein the air conditioning module 100 is used for blowing cold air or hot air outwards to adjust the temperature of the external environment, and the cigarette machine module is used for sucking the oil smoke generated by cooking and condensing the sucked oil smoke into liquid oil drops or directly discharging the liquid oil drops to the outside.

The air conditioning module 100 in an embodiment of the present invention includes a volute tongue structure 10, an air duct casing 30 and a wind wheel. The volute tongue structure 10 is arranged on the air duct shell 30, and defines an air duct cavity F and an air outlet channel D communicated with the air duct cavity F together with the air duct shell 30, and at least part of the wind wheel is located in the air duct cavity F. The wind wheel can be a cross flow wind wheel 50, and when the wind wheel rotates at a high speed, an eccentric vortex is formed in the air duct cavity F under the combined action of the air duct shell 30 and the volute tongue structure 10, so that a cross flow flowing from the air duct cavity F to the air outlet channel D is generated, and finally the cross flow is blown out of the air-conditioning cigarette. The volute tongue structure 10 can guide the airflow generated by the cross-flow wind wheel 50, so that the airflow can be sufficiently guided to the air outlet channel D.

The air conditioning module 100 further includes a housing (not shown), an evaporation fin 71, and a mounting base 73 for mounting the air duct housing 30. The evaporation fin 71, the cross-flow wind wheel 50, the air duct shell 30, the volute tongue structure 10 and the mounting seat 73 are all located in a shell, an air inlet is formed in the shell, the evaporation fin 71 is fixed above the cross-flow wind wheel 50, after cross flow is formed, air entering from the air inlet flows through the evaporation fin 71, exchanges heat with the evaporation fin 71, enters an air duct cavity F of the air duct shell 30, and finally flows out through an air outlet channel D. In addition, the air conditioning module 100 generally further includes a motor, a condensing assembly, a compressor, and the like for driving the wind wheel to rotate, and the details are not repeated herein.

Referring to fig. 3 to 5, the present invention further provides a volute tongue structure 10, which includes a body 11 and a plurality of flow deflectors 13. The body 11 has a guide surface S (as shown in fig. 6), and the guide plates 13 are disposed on the guide surface S at intervals along a longitudinal direction (corresponding to a left-right direction in fig. 3) of the body 11. Wherein, a flow passage G is defined between every two adjacent baffles 13 to guide the airflow passing through the body 11.

The length direction of the body 11 is consistent with that of the cross flow wind wheel 50, and the length of the body can be matched with the transverse airflow generated by the cross flow wind wheel 50. The guide plates 13 arranged along the length direction of the body 11 are perpendicular to the guide surface S, and a flow passage G (as shown in fig. 6) for guiding the flow of the air flow is formed between every two guide plates. The cross-flow air flow generated by the cross-flow wind wheel 50 and blown to the volute tongue structure 10 flows to the guide surface S of the body 11 under the guidance of the guide plate 13 and then flows to other positions through the guide surface S. The number of the baffles 11 may be determined according to the length of the body 11, and is not limited in particular, and is preferably sufficient to cover the range of the cross-flow generated by the cross-flow wind wheel 50.

In the volute tongue structure 10, when the airflow flows to the flow guide surface S of the body 11, the flow guide channels G formed at intervals by the flow guide plates 13 arranged on the flow guide surface S of the body 11 guide the airflow, so that the airflow can flow along the flow guide surface S in an ideal direction. Thus, on the one hand, the baffle 13 can effectively reduce the turbulence of the air flow blowing to the body 11, avoid surging and reduce noise. On the other hand, when the air current passes through the overflowing channel G between the guide plates 13, the air current is limited by the guide plates 13, so that the mixing of the surrounding air current can be effectively reduced, the obvious fluctuation of energy is avoided, meanwhile, the energy carried by the air current is gradually released in the flowing process, and the noise is further reduced. In addition, the smoothness and stability of the airflow at the volute tongue structure 10 are improved, and the air output of the final air conditioning module 100 can be indirectly improved as well.

In the present embodiment, the baffles 13 are arranged at equal intervals along the length direction of the body 11, and the thickness direction thereof coincides with the length direction of the body 11. In other words, the baffles 13 are arranged at equal intervals perpendicular to the longitudinal direction of the body 11. It is understood that, in other embodiments, the angle between the flow guide plate 13 and the longitudinal direction of the main body 11 may be adjusted adaptively, taking into consideration the angle of the blades of the cross-flow wind wheel 50 and the actual flow direction of the generated airflow, and is not limited in this respect.

In some embodiments, the flow guiding surface S includes a windward surface S1 facing the wind wheel in the air conditioning module 100, a blowing surface S2 facing the air outlet channel D in the air conditioning module 100, and a transition surface S3 smoothly connected between the windward surface S1 and the blowing surface S2.

The windward side S1 and the air duct housing 30 define together to form an air duct cavity F, and the air supply side S2 and the air duct housing 30 define together to form an air outlet channel D. When the air current that the wind wheel formed flows through body 11, most entering air outlet channel D flows along air supply face S2, and a small part blows to windward side S1. The transition curved surface S3 is smoothly connected with the windward side S1 and the air supply side S2, so that the flowing state of the air flow can be more stable when the air flow flows through the joint, and the conditions that the fluctuation is aggravated and the noise is aggravated due to the fact that the transition is not stable and the turbulence degree is deepened are effectively avoided.

Further, the baffle 13 includes a first top surface T1, and the first top surface T1 is located above the windward side S1. In the direction that the transition curved surface S3 points to the windward surface S1, the height of the first top surface T1 relative to the flow guide surface S is gradually reduced.

The first top surface T1 is located above the windward side S1, which means that the first top surface T1 is located above the windward side S1 in a direction perpendicular to the first top surface T1. It is easy to know that the first top surface T1 above the windward side S1 is also facing the wind wheel. The air current of the flow direction volute tongue structure 10 that the wind wheel produced, the part is along the in-process that the windward side S1 flows gradually under the guide of guide plate 13, and the contained angle of air current and windward side S1 diminishes gradually, and along with the increase of journey, wind-force also can attenuate gradually, and the effect of guide plate 13 just also reduces thereupon, and the height of guide plate 13 just also can the adaptability reduce.

Furthermore, in the direction in which the transition curved surface S3 points to the windward surface S1, the descending slope of the height of the first top surface T1 relative to the flow guiding surface S gradually decreases.

The descending slope of the height of the first top surface T1 relative to the flow guide surface S gradually decreases, that is, the included angle between the tangent of the first top surface T1 and the flow guide surface S gradually decreases. The first top surface T1 gradually and slowly decreases, so that the shape of the baffle 13 more conforms to the flow pattern characteristics of the air flow, and the air flow is gradually guided in a longer distance at a relatively lower height.

In some embodiments, the baffle 13 further includes a second top surface T2, the second top surface T2 being at least partially positioned above the curved transition surface S3. In the direction that the transition curved surface S3 points to the air supply surface S2, the height of the second top surface T2 relative to the flow guide surface S is gradually reduced.

Similarly, the second top surface T2 is at least partially located above the curved transitional surface S3, which means that the second top surface T2 is partially or completely located above the curved transitional surface S3 in the direction perpendicular to the second top surface. The air flow generated by the wind wheel and flowing to the volute tongue structure 10 is partially guided by the guide plate 13 to gradually flow along the air supply surface S2, the direction of the air flow and the direction of the air supply surface S2 gradually tend to be consistent, the function of the guide plate 13 can be reduced accordingly, and the height of the guide plate can be correspondingly reduced gradually.

Further, the second ceiling surface T2 is located within the spatially extending surface of the blowing surface S2.

The spatially extended surface of the air blowing surface S2 is a spatial surface on which an extended portion of the air blowing surface S2 should be located, assuming that the air blowing surface S2 extends smoothly outward based on the conventional configuration.

Compared with the air supply surface S2, the impact of the airflow on the windward surface S1 is usually stronger, so that the baffle 13 is disposed on the windward surface S1 and the transition curved surface S3 to play a more obvious role. For the air supply surface S2, only smooth transition of the air flow is required. Accordingly, the second top surface T2 is located above the curved transitional surface S3, is located in the spatial extension plane of the air blowing surface S2, and is adjacently connected to the air blowing surface S2. Thus, the guide plate 13 guides the airflow entering the air outlet channel D at the transition curved surface S3. In addition, because the space continuity of second top surface T2 and air supply face S2 is strong, can not obviously change the original structural morphology of air-out passageway D, can avoid guide plate 13 to cause too much influence to air-out passageway D, guarantee that the air-out is sufficient.

Furthermore, the air deflector 13 further includes a transition top surface T3, the transition top surface T3 is smoothly connected between the first top surface T1 and the second top surface T2, and ends of the first top surface T1 and the second top surface T2 far away from the transition top surface T3 are smoothly connected with the windward side S1 and the air supply side S2, respectively.

The transition top surface T3 helps the first top surface T1 and the second top surface T2 to realize smooth transition, and similarly, the first top surface T1 and the second top surface T2 are smoothly connected with the windward side S1 and the air supply side S2, so that the airflow flows more smoothly, strong fluctuation of the flow state caused by sudden change of the form is avoided, and noise can be avoided.

Overall, the whole air deflector 13 is roughly in a hump shape with a high middle and two low sides, the highest point of the air deflector 13 relative to the air deflector surface S exists on the transition top surface T3, and the height of the air deflector 13 gradually decreases from the highest point to the two sides. The air current that the wind wheel produced is most disorderly in the transition top surface T3 department of relative highest, and in the process of respectively flowing to windward side S1 and air supply face S2 direction, along with the increase of journey, wind-force attenuates gradually, and the height of guide plate 13 just also can the adaptability reduce, until guiding the air current to respectively laminating windward side S1 and air supply face S2 and flow. Thus, the energy of the air flow is slowly released under the guidance of the guide plate 13, and the effect of eliminating noise is achieved.

In this embodiment, the windward side S1 and the blowing side S2 are spatially intersecting planes, and the second top surface T2 is a plane coplanar with the blowing side S2. The included angle between the windward side S1 and the horizontal plane is 40-70 degrees, and the included angle between the windward side S1 and the air supply surface S2 is 60-100 degrees. Preferably, the included angle between the windward side S1 and the horizontal plane is 56 °, and the included angle between the windward side S1 and the air supply side S2 is 85 °. It is understood that, in some other embodiments, the shapes of the windward surface S1 and the air supply surface S2 may be adjusted adaptively according to the requirement of the airflow flowing state, and the windward surface S1 and the air supply surface S2 are configured as a curved surface or a combination of a plane and a curved surface, for example, a concave air suction structure is formed on the air supply surface S2 to enhance the suction capability to the airflow, avoid the airflow from being separated from the air supply surface S2 prematurely, and the like, which is not limited in this respect.

In some embodiments, the maximum height of the transition top surface T3 relative to the flow guiding surface S, i.e. the height of the highest point, is 5mm to 8mm. Specifically, the interval between the tangent line of the transition top surface T3 in the vertical direction and the curved transition surface S3 in the vertical direction may be 6.4mm. The guide plate 13 with the transition top surface T3 with such a height can effectively resist and guide the airflow, so as to reduce the turbulence degree of the airflow before the airflow blows on the guide surface S, and slowly release the energy of the airflow, thereby reducing the impact of the airflow on the body 11.

In some embodiments, the body 11 of the volute tongue structure 10 is a hollow structure. The hollow structure can effectively reduce the weight of the body 11, and contributes to realizing light weight of the air conditioning module 100.

In some embodiments, the minimum clearance between the volute tongue structure 10 and the wind wheel is 4.8mm-6.8mm, and the minimum clearance between the duct housing 30 and the wind wheel is 3mm-4mm.

In some embodiments, the transition top surface T3 of the baffle 13 has a maximum height of 5mm to 8mm relative to the flow guide surface S. The thickness of the guide plates 13 is 1.5mm-2.5mm, and the interval between the adjacent guide plates 13 is 1.5mm-2.5mm.

In this embodiment, the minimum gap between the volute tongue structure 10 and the cross flow wind wheel 50 is 5.8mm, and the minimum gap between the air duct casing 30 and the cross flow wind wheel 50 is 3.5mm. The thickness of the guide plate 13 is 2mm, and the interval between adjacent guide plates 13 is 2mm. The guide plate 13 with such a size can play a role of noise reduction on the premise of ensuring wind power. In other embodiments, the baffles 13 may also have a thickness of 1.5mm, 1.8mm, 2.3mm, 2.5mm, etc., and the gaps between adjacent baffles 13 may also be 1.5mm, 1.8mm, 2.3mm, 2.5mm, etc. It is understood that the size of the baffle 13 and the interval between adjacent baffles 13 can be adjusted adaptively according to the overall structure size, the strength of the wind generated by the cross-flow wind wheel 50, and the like, and is not limited in detail herein.

The air-conditioning range hood is provided with a range hood module for sucking oil smoke and an air-conditioning module 100 for adjusting the ambient temperature. The air conditioning module 100 is provided with a shell provided with an air inlet, an evaporation fin 71, a cross-flow fan, an air duct shell 30, a mounting seat 73 and the like, wherein the evaporation fin 71, the cross-flow fan, the air duct shell 30 and the mounting seat 73 are all located in the shell, the air duct shell 30 is mounted on the mounting seat 73, and the volute tongue structure 10 is mounted on the air duct shell 30 and forms an air duct cavity F together with the air duct shell 30 and an air outlet channel D communicated with the air duct cavity F. The cross-flow wind wheel 50 rotates at a high speed in the air duct cavity F to form an eccentric vortex, so that a cross-flow which sucks air at the air inlet and discharges air through the air outlet channel D is generated. When the through-flow airflow flows through the volute tongue structure 10, a part of the airflow entering the flow passage G between the guide plates 13 is guided to the air outlet passage to flow along the air supply surface S2, and a part of the airflow gradually flows along the windward surface S1 under the guidance of the flow passage G. Thus, the turbulence degree of the airflow blowing to the volute tongue structure 10 is greatly reduced under the guidance of the guide plate 13, and the surge is effectively controlled. The mixing of the surrounding air flow is also effectively reduced under the restriction of the guide plate 13, and the energy fluctuation is reduced, which can play a role in reducing the noise. In addition, the energy of the air flow is gradually released in the process of flowing under the guidance of the guide plate 13, and the purpose of eliminating noise is achieved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A volute tongue structure for use in an air conditioning module in a range hood air conditioner, the volute tongue structure (10) comprising:

a body (11) having a flow guide surface (S); and

the guide plates (13) are arranged on the guide surface (S) at intervals along the length direction of the body (11);

wherein, a flow passage (G) is defined between every two adjacent guide plates (13) to guide the airflow flowing through the body (11).

2. The volute tongue structure of claim 1, wherein the flow guide surface (S) comprises a windward surface (S1) facing a wind wheel in the air conditioning module (100), an air supply surface (S2) facing an air outlet channel (D) in the air conditioning module (100), and a transition curved surface (S3) smoothly connected between the windward surface (S1) and the air supply surface (S2).

3. The volute tongue structure of claim 2, wherein the deflector (13) comprises a first top surface (T1), the first top surface (T1) being located above the windward side (S1);

in the direction that the transition curved surface (S3) points to the windward side (S1), the height of the first top surface (T1) relative to the flow guide surface (S) is gradually reduced.

4. Volute tongue structure according to claim 3, wherein the first top surface (T1) has a decreasing height slope with respect to the flow guiding surface (S) in a direction in which the transition surface (S3) points towards the windward side (S1).

5. The volute tongue structure of claim 3, wherein the deflector (13) further comprises a second top surface (T2), the second top surface (T2) being at least partially above the curved transition surface (S3);

and in the direction that the transitional curved surface (S3) points to the air supply surface (S2), the height of the second top surface (T2) relative to the flow guide surface (S) is gradually reduced.

6. Volute tongue structure according to claim 5, wherein said second top surface (T2) is in the spatial extension of said blowing surface (S2).

7. The volute tongue structure of claim 5, wherein the deflector (13) further comprises a transition top surface (T3), the transition top surface (T3) is smoothly connected between the first top surface (T1) and the second top surface (T2), and ends of the first top surface (T1) and the second top surface (T2) far away from the transition top surface (T3) are smoothly connected with the windward side (S1) and the blowing side (S2), respectively.

8. An air conditioning module, characterized in that the air conditioning module (100) comprises a volute tongue structure (10) according to any one of claims 1-7.

9. The air conditioning module according to claim 8, wherein the air conditioning module (100) further comprises an air duct housing (30) and a wind wheel, the volute tongue structure (10) is disposed on the air duct housing (30) and defines an air duct cavity (F) and an air outlet channel (D) communicating with the air duct cavity (F) together with the air duct housing (30), and the wind wheel is at least partially located in the air duct cavity (F).

10. An air-conditioned machine characterized in that it comprises an air-conditioning module (100) as claimed in any one of claims 8 or 9.

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