[0040] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other if there is no conflict.
[0041] In addition, the terms “first”, “second”, etc. mentioned in the embodiments of the present disclosure are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0042] Hereinafter, the present disclosure will be described in detail with reference to the drawings and in conjunction with embodiments.
[0043] figure 1 This is a schematic structural diagram of the air duct structure 1 described in this embodiment. figure 2 for figure 1 Enlarged view at X1 in the middle. Please refer to figure 1 with figure 2 This embodiment discloses an air duct structure 1, which includes a volute cover 8 and a volute seat 9. The volute cover 8 and the volute seat 9 are detachably connected to form an inner air duct 2 and an outer air duct 3 communicating with each other. Among them, the inner air duct 2 is used for air intake, and the outer air duct 3 is used for air outlet.
[0044] It is understandable that the outer air duct 3 is provided at the air duct opening of the inner air duct 2. For the convenience of description, in this embodiment, the air duct opening of the inner air duct 2 is defined as the first air duct opening 4, and the outer air duct 3 The air duct opening of is defined as the second air duct opening 5.
[0045] In order to prevent surging and reduce noise, in this embodiment, the air duct structure 1 has a first volute tongue 6 and a second volute tongue 7 connected between the first air duct opening 4 and the second air duct opening 5, wherein the first The volute tongue 6 extends outward from the first air duct opening 4, and the second volute tongue 7 is disposed toward the second air duct opening 5.
[0046] In this embodiment, the diameter of the air duct opening of the inner air duct 2 is smaller than the diameter of the air duct opening of the outer air duct 3. It is understandable that this structure can slowly expand the pressure of the air flow conveyed from the inner wind tunnel toward the outside, reducing the problem of vortex wind.
[0047] image 3 It is a structural diagram of the volute cover 8 of the air duct structure 1 described in the embodiment. Please refer to figure 1 with image 3 In this embodiment, the side surface of the volute cover 8 is in a volute shape, and the volute cover 8 has a first lateral cover opening 10 and a first spiral opening 11, wherein the first lateral cover opening 10 is used for and The volute seat 9 is covered, and the first spiral opening 11 is used to form a second air duct opening 5 with the volute seat 9.
[0048] The volute cover 8 includes a connected first volute section 12 and a first volute extension section 13, wherein the first volute section 12 is used to connect with the volute seat 9 to form an inner air duct 2, and the first volute extension section 13 is used to connect with the volute seat 9 to form an outer air duct 3.
[0049] It should be noted that the diameter of the first volute extension section 13 extending outward from the first volute section 12 becomes larger.
[0050] In this embodiment, the lower side of the first volute extension 13 is bent to form a first tongue body 14 and a second volute tongue 7, and a second air outlet is formed between the second volute tongue 7 and the first spiral opening 11 Paragraph 16. The first tongue 14 extends outward from the first volute section 12, and the second volute 7 extends toward the first spiral opening 11.
[0051] It should be noted that the second air outlet section 16 is almost parallel to the air outlet direction of the outer air duct 3. This structural design can facilitate the air duct structure 1 to be used for docking with an external straight duct, reducing the number of direct ducts. The impact prevents jitter.
[0052] Figure 4 , Figure 5 with Image 6 Are both image 3 Enlarged view at center X2. Please refer to Figure 4 In this embodiment, the first tongue 14 includes a connected first arc section 17 and a first oblique extension section 18. The first arc section 17 extends outward from the first volute section 12, and the first oblique The extension section 18 is arranged obliquely toward the first spiral opening 11.
[0053] The second volute tongue 7 includes a connected platform section 19 and a second oblique extension section 20. The platform section 19 is connected to the first oblique extension section 18, and the platform section 19 is approximately horizontal, and the second oblique extension section 20 faces The first spiral opening 11 is arranged obliquely.
[0054] Please refer to Figure 4-Figure 6 In order to meet the wind demand and ensure better anti-surge and noise reduction effects, in this embodiment, the horizontal length A of the second air outlet section 16 is not greater than the horizontal length B of the second volute tongue 7. The horizontal length B of the tongue 7 is not greater than the horizontal length C of the first tongue body 14.
[0055] Among them, the horizontal length refers to the length projected in the horizontal direction. Among them, the horizontal length A of the second air outlet section 16 can be set to 4mm~10mm; the horizontal length B of the second volute tongue 7 can be set to 6mm~15mm; the horizontal length C of the first tongue body 14 can be set to 8mm~20mm .
[0056] In addition, in this embodiment, the height E of the first tongue body 14 and the height F of the second volute tongue 7 can be generally set to be the same height, and generally can be set to be 4 mm to 15 mm. As an embodiment, the height E of the first tongue body 14 and the height F of the second volute tongue 7 can both be set to 8 mm.
[0057] Among them, height refers to the vertical height projected in the vertical direction. In addition, it should be noted that the "equal" in this embodiment does not specifically mean that the dimensions are completely the same, and may have an error of less than 2%.
[0058] In this embodiment, the first obliquely extending section 18 and the platform section 19 are at an obtuse angle, the second obliquely extending section 20 and the first air outlet section 26 are at an obtuse angle, and the first obliquely extending section 18 and The angle between the platform section 19 is greater than the angle between the second oblique extension section 20 and the first air outlet section 26.
[0059] Optionally, the included angle ΦI between the first oblique extension section 18 and the platform section 19 can be set to 90°~160°, and the included angle ΦII between the second oblique extension section 20 and the first air outlet section 26 It can be set from 90° to 135°.
[0060] Figure 7 This is a schematic cross-sectional structure diagram of the air duct structure 1 in this embodiment. Picture 8 for Figure 7 Enlarged view at X3 in the middle. Please refer to Figure 7 with Picture 8 In this embodiment, the width of the first obliquely extending section 18 gradually decreases from the first arc-shaped section 17 to the platform section 19, and the width of the second obliquely extending section 20 is from the platform section 19 to the first air outlet section 26. Gradually decreasing, this structure can adapt to the roughly cylindrical shape of the outer air duct 3.
[0061] Among them, the width refers to Picture 8 The length in the transverse direction shown.
[0062] It can be understood that, in this embodiment, the second volute tongue 7 is completely disposed on the volute cover 8, and the maximum width b of the second volute tongue 7 is smaller than the maximum width a1 of the first tongue body 14. The width of 7 can be set to 3/4-16/17 of the first tongue 14.
[0063] It should be noted that, in this embodiment, the entire first tongue 14 is inclined toward the volute seat 9 and the inclination angle may be 2°-5°. This structure not only adapts to the angle of mold release, but also achieves maximum noise reduction.
[0064] Picture 9 It is a structural diagram of the volute seat 9 of the air duct structure 1 described in the embodiment. Please refer to Picture 9 In this embodiment, the side surface of the volute seat 9 also has a volute shape, and the volute seat 9 has a second lateral cover 21 and a second spiral opening 22, wherein the second lateral cover 21 is used for Covered with the first lateral cover opening 10 of the volute cover 8, the second spiral opening 22 is used to form a second air duct opening 5 with the first spiral opening 11 of the volute cover 8.
[0065] In this embodiment, the volute cover 8 and the volute seat 9 are relatively snap-fitted, and can be fixed by screws or the like.
[0066] The volute seat 9 includes a connected second volute section 23 and a second volute extension section 24, wherein the second volute section 23 is used to connect with the first volute section 12 of the volute cover 8 to form an inner air duct 2 The second volute extension section 24 is used to connect with the first volute extension section 13 of the volute cover 8 to form an outer air duct 3.
[0067] In this embodiment, the second volute extension section 24 extends outward from the second volute section 23 to increase in diameter.
[0068] In this embodiment, the lower side of the second volute extension 24 is bent to form a second tongue 25, and a first air outlet section 26 is formed between the second tongue 25 and the second spiral opening 22. The second tongue body 25 extends outward from the second volute section 23.
[0069] It should be noted that the first air outlet section 26 is almost parallel to the air outlet direction of the outer air duct 3. This structural design can facilitate the air duct structure 1 to be used for docking with an external straight duct, reducing the number of direct ducts. The impact prevents jitter.
[0070] Picture 10 , Picture 11 with Picture 12 Are both Picture 9 Enlarged view at center X4. Please refer to Figure 10-Figure 12 In this embodiment, the second tongue body 25 includes a second arc-shaped section 27 and a third obliquely extending section 28 that are connected.
[0071] The second arc section 27 extends outward from the second volute section 23, and the second arc section 27 and the first arc section 17 are detachably connected. The third oblique extension section 28 is arranged obliquely toward the second spiral opening 22, and the first oblique extension section 18 and the third oblique extension section 28 are detachably connected.
[0072] In order to adapt to the wind demand and ensure better anti-surge and noise reduction effects, in this embodiment, the horizontal length M of the second tongue body 25 is equal to the horizontal length C of the first tongue body 14, and the first wind section The horizontal length N of 26 is equal to the sum of the horizontal length A of the second air outlet section 16 and the horizontal length B of the second volute tongue 7.
[0073] As an embodiment, the horizontal length M of the second tongue body 25 may be set to be 8 mm to 20 mm, and the horizontal length of the first air outlet section 26 may be set to be 10 mm to 25 mm.
[0074] In this embodiment, the height H of the second tongue body 25 is equal to the height E of the first tongue body 14, and can generally be set to be 4 mm to 15 mm.
[0075] There is an obtuse angle between the third oblique extension section 28 and the second air outlet section 16. The angle ΦⅢ between the third oblique extension section 28 and the second air outlet section 16 is between the first oblique extension section 18 and the platform section 19 The included angle ΦI is equal and can be set to 90°~160°.
[0076] Please continue to combine reference Figure 7 with Picture 8 In this embodiment, the width of the third obliquely extending section 28 is gradually reduced from the second arc section 27 to the second air outlet section 16 to adapt to the roughly cylindrical shape of the outer air duct 3.
[0077] In this embodiment, the maximum width a2 of the second tongue body 25 is equal to the maximum width a1 of the first tongue body 14 minus the maximum width b of the second volute tongue 7.
[0078] It can be understood that the first tongue body 14 and the second tongue body 25 are connected to form the first volute tongue 6. This structure enables the second volute tongue 7 to be roughly arranged in the middle of the first volute tongue 6 to ensure the stability of the structure.
[0079] In this embodiment, the maximum width a of the first volute tongue 6 is equal to the width of the inner air duct 2. Moreover, the maximum width b of the second volute tongue 7 and the maximum width a of the first volute tongue 6 satisfy the following relationship:
[0080] a/2≤b≤a.
[0081] It should be noted that because the mold must have a certain exit angle, the volute tongue angle of the volute cover 8 can be consistent with the direction of the blade angle, but the volute tongue angle on the volute seat 9 can only be in the direction of the wind wheel angle. On the contrary, the volute tongue angle of the volute cover 8 has an advantage for noise, and the volute tongue angle of the volute seat 9 has a disadvantage for noise. Therefore, in this application, the width of the volute cover 8 is made as wide as possible, so that the angle of the volute tongue of the entire air duct is as consistent as possible with the direction of the wind wheel angle, so as to maximize the noise reduction effect.
[0082] It can be understood that, in this embodiment, the horizontal length of the first volute tongue 6 is equal to the horizontal length C of the first tongue body 14 and the horizontal length M of the second tongue body 25. The height of the first volute tongue 6 is equal to the height F of the first tongue body 14 and the height H of the second tongue body 25.
[0083] Figure 13 A partial structural diagram of the air conditioner described in this embodiment. Please refer to Figure 13 Based on the above-mentioned air duct structure 1, this embodiment also discloses an air conditioner, which includes a centrifugal wind wheel 29 and an air duct structure 1. The centrifugal wind wheel 29 is installed in the inner air duct 2.
[0084] It is understandable that, in the air duct structure 1 disclosed in this embodiment, the volute cover 8 and the volute seat 9 are detachably connected to form a first volute tongue 6 and a second volute tongue 7, and the first volute tongue 6 is The air duct opening of the inner air measurement duct extends toward the air duct opening of the outer air duct 3, and the second volute tongue 7 is arranged toward the air duct opening of the outer air duct 3, which can slowly expand the pressure of the air flow conveyed from the inner air duct toward the outside and reduce Small volute tongue vortex wind problem, and the maximum width b of the second volute tongue 7 is set to 1/2 to 1 of the maximum width a of the first volute tongue 6 (a/2≤b≤a); the second air outlet section The horizontal length of 16 is less than or equal to the horizontal length of the second volute tongue 7, and the horizontal length of the second volute tongue 7 is less than or equal to the horizontal length of the first volute tongue 6 (A=M≤B≤C); The height is equal to the height of the second volute tongue 7 (H=E=F); the first oblique extension section 18 and the third oblique extension section 28 form an oblique extension section of the first volute tongue 6 and the platform section 19 The degree of the obtuse angle formed between the second oblique extension section 20 and the first air outlet section 26 is greater than the degree of the obtuse angle formed between the second oblique extension section 20 and the first air outlet section 26 (ΦⅡ≤ΦⅢ=ΦⅠ), so it can minimize noise and improve users Sense of experience.
[0085] The air conditioner provided by the present disclosure adopts the air duct structure 1 provided by the present disclosure, which has less vortex wind phenomenon and low noise, and can effectively provide a sense of use experience.
[0086] The above descriptions are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the disclosure Within the scope of protection.
