Volute tongue structure, fan structure and air conditioner

Abstract

The present invention provides a volute tongue structure, a fan structure and an air conditioner, wherein the volute tongue structure comprises: a volute tongue portion, which is rotatably arranged in a volute component; a sealing portion, which is arranged at the end of the volute tongue portion; wherein the sealing portion has a sealing groove, and the notch of the sealing groove is arranged toward the volute component, so that the airflow between the volute tongue portion and the volute component flows out through the sealing groove. The volute tongue structure of the present invention solves the problem of air leakage in the gap between the volute tongue and the volute of the fan of the air conditioner in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning, and in particular to a volute tongue structure, a fan structure and an air conditioner. Background Art

[0002] At present, up-and-down air conditioners can achieve shower-style cooling and carpet-style heating, which is very comfortable. Up-and-down reversible air conditioners can achieve cooling with all the wind blowing from top to bottom, and heating with all the wind blowing from bottom to top, which has great development prospects. Up-and-down reversible air outlets are designed with a rotating volute tongue structure, which changes the position of the volute tongue by rotating the volute tongue, thereby changing the direction of the up-and-down air outlets and achieving up-and-down reversible air outlets.

[0003] However, due to the movement gap between the volute tongue and the upper and lower front and rear surfaces of the volute, and the upper and lower circumferences of the volute, it is easy to cause air leakage and air blowback in the air duct, which has a great impact on the air volume and noise. Summary of the invention

[0004] The main purpose of the present invention is to provide a volute tongue structure, a fan structure and an air conditioner to solve the problem of air leakage in the gap between the volute tongue and the volute case of the fan of the air conditioner in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to a first aspect of the present invention, a volute tongue structure is provided, comprising: a volute tongue portion, which is rotatably arranged in a volute casing component; and a sealing portion, which is arranged at an end of the volute tongue portion; wherein the sealing portion has a sealing groove, and a notch of the sealing groove is arranged toward the volute casing component so that the airflow between the volute tongue portion and the volute casing component can flow out through the sealing groove.

[0006] Furthermore, the sealing groove is used to allow at least a portion of the wind shielding protrusion of the volute component to extend from the notch of the sealing groove into the sealing groove, so as to form an air flow gap between the sealing groove and the volute component.

[0007] Furthermore, the sealing portion has a plurality of sealing grooves, and the plurality of sealing grooves are arranged at intervals along the spacing direction of the two groove side walls of the sealing groove, so that the plurality of wind-shielding protrusions of the volute component extend into the plurality of sealing grooves one by one in correspondence.

[0008] Further, the sealing portion includes a first rib and a second rib that are arranged opposite to each other, the first rib and the second rib are both fixed on the volute tongue portion and form a sealing groove, and the first rib is arranged on the outer side of the second rib.

[0009] Furthermore, a first roller for contacting the volute component is provided on the volute tongue portion, and a rotation axis of the first roller is parallel to the axis of the volute tongue portion; and an avoidance groove for avoiding the first roller is provided on the first rib.

[0010] Furthermore, a second roller for contacting the volute component is provided on the volute tongue portion, and the rotation axis of the second roller is perpendicular to the axis of the volute tongue portion; a mounting portion with a mounting cavity is provided on the first rib, and the second roller is rotatably mounted on the mounting portion, and part of the wheel body of the second roller is located in the mounting cavity.

[0011] Furthermore, the volute tongue structure also includes: a buffer component, which is arranged at the pressurization starting end of the volute tongue portion, and the volute tongue portion is in contact with the volute case portion through the buffer component.

[0012] Furthermore, the buffer component is a rubber component.

[0013] Furthermore, the buffer component includes a connecting portion and a contact portion which are connected to each other, the connecting portion is a step structure, and the end of the boost starting end of the volute tongue portion contacts the step surface of the step structure; the connecting portion is arranged on one side of the boost starting end, and the contact portion is used to contact the volute component.

[0014] Furthermore, the volute tongue portion and the sealing portion are integrally formed, and the volute tongue portion comprises a volute tongue main board and connecting plates arranged at two ends of the volute tongue main board, and the two connecting plates are both provided with the sealing portion.

[0015] According to a second aspect of the present invention, a fan structure is provided, comprising a volute component and a volute tongue structure, wherein the volute tongue structure is the volute tongue structure described above.

[0016] Further, the volute component comprises a first volute portion and a second volute portion which are arranged opposite to each other, and a sealing portion is provided at one end of the volute tongue portion which is opposite to the first volute portion and at one end of the volute tongue portion which is opposite to the second volute portion.

[0017] Furthermore, a wind shielding protrusion is provided on the volute component, and at least a part of the wind shielding protrusion extends from the notch of the sealing groove into the sealing groove, and an air flow gap is provided between the wind shielding protrusion and the groove bottom of the sealing groove.

[0018] Furthermore, there are a plurality of sealing grooves, which are arranged at intervals along the spacing direction of the two groove side walls of the sealing grooves, and there are a plurality of wind shielding protrusions, which are arranged in one-to-one correspondence with the plurality of sealing grooves.

[0019] According to a third aspect of the present invention, there is provided an air conditioner, comprising a fan structure, wherein the fan structure is the above-mentioned fan structure.

[0020] By applying the technical solution of the present invention, the volute tongue structure of the present invention is a rotatable volute tongue structure, and a sealing portion with a sealing groove is provided on the volute tongue portion, and the notch of the sealing groove is provided toward the volute component, so that the airflow between the volute tongue portion and the volute component flows out through the complex channel formed between the sealing groove and the volute component, forming a certain resistance to the airflow, so as to reduce the flow rate of the airflow, thereby reducing the leakage of the airflow. In this way, the movement reliability of the volute tongue structure can be ensured, and the volute tongue structure and the volute component can be effectively sealed to prevent air leakage and wind from the air duct. While ensuring the movement gap required by the volute tongue structure during the rotation process, it also solves the problem that the fan of the air conditioner in the prior art is easy to directly escape from the movement gap due to the existence of the movement gap, thereby causing air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of an embodiment of a volute tongue structure according to the present invention is shown;

[0023] Figure 2 Shows Figure 1 A schematic structural diagram of a buffer component of a volute tongue structure shown;

[0024] Figure 3 A schematic diagram showing the internal structure of an embodiment of a fan structure according to the present invention is shown;

[0025] Figure 4 Shows Figure 3 The cross-sectional view of the overall structure of the fan structure shown is taken along the AA direction;

[0026] Figure 5 Shows Figure 4 The fan structure shown is a partial enlarged view at B;

[0027] Figure 6 Shows Figure 3 An exploded view of the overall structure of the fan structure is shown;

[0028] Figure 7 Shows Figure 3 A schematic diagram of airflow direction when the fan structure is in an upward air outlet state; and

[0029] Figure 8 Shows Figure 3 The schematic diagram of airflow direction when the fan structure is in the downward air outlet state is shown.

[0030] The above drawings include the following reference numerals:

[0031] 1. Volute tongue structure; 11. Volute tongue part; 110. Boost starting end; 12. Sealing part; 120. Sealing groove; 121. First rib; 1211. Avoidance groove; 1212. Mounting part; 122. Second rib; 111. First roller; 112. Second roller; 13. Buffer part; 131. Connecting part; 132. Contact part; 2. Volute part; 20. Wind shielding protrusion; 21. First volute part; 22. Second volute part; 3. Fan blade. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] like Figures 1 to 8 As shown, the present invention provides a volute tongue structure, comprising: a volute tongue portion 11, which is rotatably arranged in a volute component 2; a sealing portion 12, which is arranged at the end of the volute tongue portion 11; wherein the sealing portion 12 has a sealing groove 120, and the notch of the sealing groove 120 is arranged toward the volute component 2, so that the airflow between the volute tongue portion 11 and the volute component 2 flows out through the sealing groove 120.

[0034] The volute tongue structure of the present invention is a rotatable volute tongue structure, and a sealing portion 12 having a sealing groove 120 is provided on the volute tongue portion 11, and the notch of the sealing groove 120 is provided toward the volute component 2, so that the airflow between the volute tongue portion 11 and the volute component 2 flows out through the complex channel formed between the sealing groove 120 and the volute component 2, forming a certain resistance to the airflow, so as to reduce the flow rate of the airflow, thereby reducing the leakage of the airflow. In this way, the movement reliability of the volute tongue structure can be ensured, and the volute tongue structure and the volute component 2 can be effectively sealed to prevent air leakage and wind from the air duct. While ensuring the movement gap required by the volute tongue structure during the rotation process, it also solves the problem that the fan of the air conditioner in the prior art is easy to directly escape from the movement gap due to the existence of the movement gap, thereby causing air leakage.

[0035] Specifically, the sealing groove 120 is used to allow at least a portion of the wind shielding protrusion 20 of the volute component 2 to extend from the notch of the sealing groove 120 into the sealing groove 120 , so that an air flow gap is formed between the sealing groove 120 and the volute component 2 .

[0036] Preferably, the sealing portion 12 has a plurality of sealing grooves 120 , which are arranged at intervals along the spacing direction of the two groove side walls of the sealing grooves 120 , so that the plurality of wind-shielding protrusions 20 of the volute component 2 extend into the plurality of sealing grooves 120 one by one.

[0037] like Figure 4 and Figure 5 As shown in the figure, the arrow indicates the flow direction of the airflow, and each wind-shielding protrusion 20 of the volute component 2 is inserted into the sealing groove 120 of the corresponding sealing part 12, so that the gap between the wind-shielding protrusion 20 and the sealing groove 120 forms a gas flow path, including multiple sections parallel to the axis of the volute tongue structure and multiple sections perpendicular to the axis of the volute tongue structure. The gas flow path composed of these sections acts as resistance to the airflow in the gap between the volute tongue structure and the volute component 2, so that the airflow cannot leak out directly, but needs to pass through the gas flow path with multiple complex sections before it leaks out, thereby greatly reducing the amount of airflow leakage.

[0038] like Figure 1 As shown, the sealing portion 12 includes a first rib 121 and a second rib 122 that are arranged opposite to each other. The first rib 121 and the second rib 122 are both fixed to the volute tongue portion 11 and form a sealing groove 120. The first rib 121 is arranged on the outside of the second rib 122. In this way, the first rib 121 and the second rib 122 of the sealing portion 12 are arranged opposite to each other to form the sealing groove 120, so that the wind shielding protrusion 20 can be inserted into the sealing groove 120, effectively reducing the air leakage and noise caused by the direct escape of wind.

[0039] like Figure 1 As shown, the volute tongue portion 11 is provided with a first roller 111 for contacting the volute housing component 2 , and the rotation axis of the first roller 111 is parallel to the axis of the volute tongue portion 11 ; the first rib 121 is provided with an avoidance groove 1211 for avoiding the first roller 111 .

[0040] like Figure 1 As shown, the volute tongue portion 11 is provided with a second roller 112 for contacting the volute case portion 2, and the rotation axis of the second roller 112 is perpendicular to the axis of the volute tongue portion 11; the first rib 121 is provided with a mounting portion 1212 with a mounting cavity, the second roller 112 is rotatably mounted on the mounting portion 1212, and part of the wheel body of the second roller 112 is located in the mounting cavity.

[0041] The rotation and support of the first roller 111 and the second roller 112 between the volute tongue structure and the volute component 2 ensures a certain movement gap between the volute tongue structure and the volute component 2, while preventing the displacement of the volute tongue structure during movement due to the existence of the movement gap, thereby ensuring the relative position between the volute tongue structure and the volute component 2.

[0042] like Figure 1 As shown, the volute tongue structure further includes: a buffer component 13 , which is arranged at the boost starting end 110 of the volute tongue portion 11 , and the volute tongue portion 11 is in contact with the volute case portion 2 through the buffer component 13 .

[0043] The volute tongue structure is prone to collide with the volute component 2 during rotation and produce abnormal noise. By arranging a buffer component 13 at the boost start end of the volute tongue structure, the two ends of the buffer component 13 are in contact with the volute tongue structure and the volute component 2 respectively, which can not only seal the gap between the boost start end and the volute component 2 to prevent wind from blowing in, but also reduce the abnormal noise caused by the collision between the volute tongue structure and the volute component 2, thereby improving the sound quality of the air conditioner.

[0044] Specifically, the boost starting end 110 is an end where the volute tongue structure 1 contacts the volute component 2 to form a boost chamber.

[0045] Preferably, the buffer component 13 is a rubber component. The buffer component 13 is formed by two-color injection molding with rubber at the boost starting end 110, or the buffer component 13 is fixed to the boost starting end 110 after being processed separately. Due to the provision of the buffer component 13 made of rubber material, when the volute tongue structure moves to the upper air outlet or lower air outlet state, the buffer component 13 can seal the gap between the boost starting end 110 of the volute tongue structure and the volute component 2, preventing air leakage in the movement gap there, so that the volute tongue structure and the volute component 2 will not directly collide, avoiding abnormal noise caused by the collision, reducing the damage caused by the collision between the volute tongue structure and the volute component 2, and ensuring the sound quality of the air conditioner.

[0046] like Figure 2 As shown, the buffer component 13 includes a connecting portion 131 and a contact portion 132 that are interconnected, the connecting portion 131 is a step structure, and the end of the boost starting end 110 of the volute tongue portion 11 contacts the step surface of the step structure; the connecting portion 131 is arranged on one side of the boost starting end 110, and the contact portion 132 is used to contact the volute component 2.

[0047] Preferably, the volute tongue portion 11 and the sealing portion 12 are integrally formed, and the volute tongue portion 11 includes a volute tongue main plate and connecting plates arranged at both ends of the volute tongue main plate, and both connecting plates are provided with the sealing portion 12. The two connecting plates are respectively located at the axial ends of the volute tongue main plate, and the two connecting plates are parallel to each other. The volute tongue main plate is an arc plate, and the supercharging starting end 110 is arranged at one end of the arc direction of the volute tongue main plate.

[0048] The present invention provides a fan structure, including a volute component 2 and a volute tongue structure 1, wherein the volute tongue structure 1 is the above-mentioned volute tongue structure.

[0049] Specifically, the fan structure of the present invention is a centrifugal fan with reversible air outlet up and down. The volute tongue structure 1 is rotatably arranged in the fan structure. The volute tongue structure 1 is driven to rotate by a motor and a transmission wheel assembly arranged on the outside of the volute tongue structure 1. An outer gear ring is provided on the volute tongue structure 1 for meshing with the gear of the transmission wheel assembly.

[0050] The volute component 2 includes a first volute portion 21 and a second volute portion 22 which are arranged opposite to each other. A sealing portion 12 is provided at both the end of the volute tongue portion 11 which is opposite to the first volute portion 21 and the end of the volute tongue portion 11 which is opposite to the second volute portion 22 .

[0051] Specifically, the volute component 2 includes a first volute portion 21 and a second volute portion 22 that are arranged opposite to each other. The first volute portion 21 and the second volute portion 22 are respectively located at two axial ends of the volute tongue structure 1 . The fan achieves upward and downward air discharge through the rotation of the volute tongue structure 1 .

[0052] A wind shielding protrusion 20 is provided on the volute component 2 , and at least a portion of the wind shielding protrusion 20 extends from the notch of the sealing groove 120 into the sealing groove 120 , and there is an air flow gap between the wind shielding protrusion 20 and the groove bottom of the sealing groove 120 .

[0053] The front and rear axial end faces of the volute tongue structure 1 are both provided with a first rib 121 and a second rib 122, and the corresponding first volute portion 21 and the second volute portion 22 are both provided with wind-blocking protrusions, which are respectively inserted into the sealing grooves 120 at the two end faces of the volute tongue structure 1, so as to prevent wind from directly escaping from the movement gap when the air duct is discharged upward or downward, thereby effectively reducing air leakage and improving the sound quality of the air conditioner.

[0054] Preferably, there are multiple sealing grooves 120 , which are arranged at intervals along the spacing direction of the two groove side walls of the sealing groove 120 , and there are multiple wind shielding protrusions 20 , which are arranged one-to-one correspondingly to the multiple sealing grooves 120 .

[0055] A plurality of sealing grooves 120 are arranged at intervals along the spacing direction of the two groove side walls of the sealing groove 120, that is, the plurality of sealing grooves 120 are arranged at intervals along a direction perpendicular to the extension direction of the sealing groove 120, and accordingly, a plurality of wind-shielding protrusions 20 are also arranged at intervals along the spacing direction of the two groove side walls of the sealing groove 120, so that at least parts of the plurality of wind-shielding protrusions 20 are inserted into the plurality of sealing grooves 120 one by one.

[0056] like Figure 6 As shown, the fan structure further includes a fan blade 3 , which is located inside the volute tongue structure 1 so as to provide airflow to the volute tongue structure 1 through the rotation of the fan blade 3 .

[0057] The present invention also provides an air conditioner, comprising a fan structure, and the fan structure is the above-mentioned fan structure.

[0058] like Figure 7 and Figure 8 The figure shows a schematic diagram of the airflow direction when the fan structure of the present invention is in an upward air outlet state or a downward air outlet state, and the arrows in the figure indicate the flow direction of the airflow.

[0059] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0060] The volute tongue structure of the present invention is a rotatable volute tongue structure, and a sealing portion 12 having a sealing groove 120 is provided on the volute tongue portion 11, and the notch of the sealing groove 120 is provided toward the volute component 2, so that the airflow between the volute tongue portion 11 and the volute component 2 flows out through the complex channel formed between the sealing groove 120 and the volute component 2, forming a certain resistance to the airflow, so as to reduce the flow rate of the airflow, thereby reducing the leakage of the airflow. In this way, the movement reliability of the volute tongue structure can be ensured, and the volute tongue structure and the volute component 2 can be effectively sealed to prevent air leakage and wind from the air duct. While ensuring the movement gap required by the volute tongue structure during the rotation process, it also solves the problem that the fan of the air conditioner in the prior art is easy to directly escape from the movement gap due to the existence of the movement gap, thereby causing air leakage.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A snail tongue structure, characterized in that: include: A volute tongue portion (11), the volute tongue portion (11) being rotatably disposed in the volute component (2); A sealing portion (12), the sealing portion (12) being arranged at an end of the volute tongue portion (11); The sealing portion (12) has a sealing groove (120), and a notch of the sealing groove (120) is arranged toward the volute component (2), so that the airflow between the volute tongue portion (11) and the volute component (2) flows out through the sealing groove (120); The sealing groove (120) is used to allow at least a portion of the wind shielding protrusion (20) of the volute component (2) to extend from the notch of the sealing groove (120) into the sealing groove (120), so that an airflow gap is formed between the sealing groove (120) and the volute component (2); The airflow gap includes a plurality of sections parallel to the axis of the volute tongue structure and a plurality of sections perpendicular to the axis of the volute tongue structure; The sealing portion (12) comprises a first rib (121) and a second rib (122) which are arranged opposite to each other, the first rib (121) and the second rib (122) are both fixed on the volute tongue portion (11) and form the sealing groove (120), and the first rib (121) is arranged on the outside of the second rib (122); The volute tongue portion (11) is provided with a first roller (111) for contacting the volute case component (2); the rotation axis of the first roller (111) is parallel to the axis of the volute tongue portion (11); and the first rib (121) is provided with an avoidance groove (1211) for avoiding the first roller (111).

2. The snail tongue structure according to claim 1, characterized in that: The sealing portion (12) has a plurality of sealing grooves (120), and the plurality of sealing grooves (120) are arranged at intervals along the spacing direction of two groove side walls of the sealing groove (120), so that the plurality of wind shielding protrusions (20) of the volute component (2) extend into the plurality of sealing grooves (120) in a one-to-one corresponding manner.

3. The snail tongue structure according to claim 1, characterized in that: The volute tongue portion (11) is provided with a second roller (112) for contacting the volute case portion (2), and the rotation axis of the second roller (112) is perpendicular to the axis of the volute tongue portion (11); the first rib (121) is provided with a mounting portion (1212) having a mounting cavity, the second roller (112) is rotatably mounted on the mounting portion (1212), and a part of the wheel body of the second roller (112) is located in the mounting cavity.

4. The volute tongue structure according to any one of claims 1 to 3, characterized in that: The volute tongue structure further comprises a buffer component (13), wherein the buffer component (13) is arranged at the boost start end (110) of the volute tongue portion (11), and the volute tongue portion (11) is in contact with the volute case portion (2) via the buffer component (13).

5. The snail tongue structure according to claim 4, characterized in that: The buffer component (13) is a rubber component.

6. The snail tongue structure according to claim 4, characterized in that: The buffer component (13) comprises a connecting portion (131) and a contact portion (132) which are connected to each other; the connecting portion (131) is a step structure, and the end of the boost starting end (110) of the volute tongue portion (11) contacts the step surface of the step structure; the connecting portion (131) is arranged on one side of the boost starting end (110), and the contact portion (132) is used to contact the volute component (2).

7. The volute tongue structure according to claim 1, characterized in that: The volute tongue portion (11) and the sealing portion (12) are integrally formed, and the volute tongue portion (11) comprises a volute tongue main plate and connecting plates arranged at two ends of the volute tongue main plate, and the sealing portion (12) is arranged on both connecting plates.

8. A fan structure, comprising a volute component (2) and a volute tongue structure (1), characterized in that: The volute tongue structure (1) is the volute tongue structure according to any one of claims 1 to 7.

9. The fan structure according to claim 8, characterized in that: The volute component (2) comprises a first volute portion (21) and a second volute portion (22) which are arranged opposite to each other, and the sealing portion (12) is provided at both an end of the volute tongue portion (11) opposite to the first volute portion (21) and an end of the volute tongue portion (11) opposite to the second volute portion (22).

10. The fan structure according to claim 8, characterized in that: The volute component (2) is provided with a wind shielding protrusion (20), at least part of which extends from a notch of the sealing groove (120) into the sealing groove (120), and an airflow circulation gap is provided between the wind shielding protrusion (20) and the groove bottom of the sealing groove (120).

11. The fan structure according to claim 10, characterized in that: There are a plurality of sealing grooves (120), and the plurality of sealing grooves (120) are arranged at intervals along the spacing direction of two groove side walls of the sealing groove (120); there are a plurality of wind shielding protrusions (20), and the plurality of wind shielding protrusions (20) are arranged in a one-to-one correspondence with the plurality of sealing grooves (120).

12. An air conditioner, comprising a fan structure, characterized in that: The fan structure is the fan structure according to any one of claims 8 to 11.

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