Air duct structure and cabinet air conditioner

Abstract

The utility model provides an air duct structure and a cabinet air conditioner, and relates to the technical field of air conditioners. The air duct structure comprises a volute and an impeller, the volute comprises a front volute body and a rear volute body, and the front volute body and the rear volute body are oppositely arranged and define an impeller cavity for containing the impeller; a front volute tongue is arranged at the position, corresponding to the air outlet side of the impeller, of the front volute, and the radius of the R angle of the front volute tongue is larger than or equal to 6.3 mm and smaller than 8.3 mm. And / or the width of a volute tongue gap formed between the front volute tongue and the impeller is larger than or equal to 4 mm and smaller than 5 mm; and / or the volute tongue wrap angle of the front volute tongue is larger than or equal to 23 degrees and smaller than 27 degrees, and the volute tongue wrap angle refers to an included angle formed by connecting lines of the two ends, in the rotating direction of the impeller, of the front volute tongue and the center of the impeller. According to the air duct structure, the air volume can be increased, noise can be reduced, and better user experience can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to an air duct structure and a cabinet air conditioner. Background Technology

[0002] In air conditioners, the parameters of the volute tongue are closely related to airflow and noise. These parameters include the radius of the radius (R-angle), the volute tongue gap, and the volute tongue wrap angle.

[0003] Currently, the volute parameters of floor-standing air conditioners on the market are unreasonable, and floor-standing air conditioners generally have problems such as small air volume and high noise. Utility Model Content

[0004] The problem solved by this utility model is that the volute parameters of existing cabinet air conditioners are unreasonable, resulting in insufficient air volume and excessive noise.

[0005] To address the aforementioned issues, embodiments of this utility model provide an air duct structure that can increase airflow and reduce noise, resulting in a better user experience.

[0006] The embodiments of this utility model provide a technical solution:

[0007] A duct structure includes a volute and an impeller. The volute includes a front volute and a rear volute, which are disposed opposite to each other to form an impeller chamber for housing the impeller. A front volute tongue is provided on the front volute at a position corresponding to the air outlet side of the impeller. The radius of the radius (R-angle) of the front volute tongue is greater than or equal to 6.3 mm and less than 8.3 mm; and / or,

[0008] The width of the volute gap formed between the front volute tongue and the impeller is greater than or equal to 4 mm and less than 5 mm; and / or,

[0009] The volute tongue of the front volute tongue has a volute tongue wrap angle greater than or equal to 23° and less than 27°, wherein the volute tongue wrap angle refers to the angle formed by the lines connecting the two ends of the front volute tongue in the impeller rotation direction to the center of the impeller.

[0010] The air duct structure provided in this embodiment of the invention has a front volute radius greater than or equal to 6.3 mm and less than 8.3 mm, which enables the air volume growth rate of the cabinet air conditioner to reach a maximum of 1.9%; the width of the volute gap formed between the front volute and the impeller is greater than or equal to 4 mm and less than 5 mm, which enables the air volume growth rate of the cabinet air conditioner to reach a maximum of 3.2%; and the volute wrap angle of the front volute is greater than or equal to 23° and less than 27°, which enables the air volume growth rate of the cabinet air conditioner to reach a maximum of 1.2%. Furthermore, through the combination of parameters such as the front volute radius, volute gap, and volute wrap angle, the noise of the air duct structure can be significantly reduced.

[0011] In an optional implementation, the radius of the R-angle is 6.3 mm or 7.3 mm.

[0012] When the radius of the radius (R) is 6.3 mm, the air volume growth rate is 1.9%; when the radius of the radius (R) is 7.3 mm, the air volume growth rate is 1.1%.

[0013] In an optional embodiment, the width of the volute tongue gap is 4 mm or 4.5 mm.

[0014] When the width of the volute tongue gap is 4 mm, the air volume growth rate is 3.2%; when the width of the volute tongue gap is 4.5 mm, the air volume growth rate is 1.1%.

[0015] In an optional embodiment, the volute tongue wrap angle is 23° or 25°.

[0016] When the volute tongue angle is 23°, the airflow growth rate is 1.2%; when the volute tongue angle is 25°, the airflow growth rate is 0.6%.

[0017] In an optional embodiment, the radius of the R-angle is 6.3 mm, the width of the volute tongue gap is 4 mm, and the volute tongue wrap angle is 23°.

[0018] The optimal combination of parameters is 6.3mm radius of the R-angle, 4mm width of the volute tongue gap, and 23° volute tongue wrap angle. Under this combination of parameters, the air volume growth rate of the cabinet air conditioner reaches its maximum.

[0019] In an optional embodiment, the impeller chamber has an air outlet corresponding to the air outlet side of the impeller, and the air duct structure further includes a front diffuser section and a rear diffuser section. The front diffuser section is disposed on the side of the front volute near the air outlet and is connected to the front volute tongue.

[0020] The rear diffuser section is located on the side of the rear volute near the air outlet and is connected to the rear volute; a diffuser angle is formed between the front diffuser section and the rear diffuser section, the diffuser angle being greater than 21° and less than or equal to 28°.

[0021] The diffusion angle between the front and rear diffuser sections is greater than 21° and less than or equal to 28°, which makes the main airflow direction at the outlet basically parallel to the front diffuser section, thereby further improving the airflow velocity and volume.

[0022] In an optional implementation, the diffusion angle is 27°.

[0023] The diffusion angle between the front and rear diffuser sections is 27°, which makes the main flow direction of the air outlet basically parallel to the front diffuser section, thereby further improving the air velocity and air volume.

[0024] In an optional embodiment, the anterior diffuser section smoothly transitions to the anterior cochlear tongue; and / or,

[0025] The rear diffuser section is connected to the rear volute near the air outlet and transitions smoothly.

[0026] The smooth transition between the front diffuser section and the front volute tongue avoids obstructing the airflow at the connection point, further improving the airflow velocity and volume. Similarly, the smooth transition between the rear diffuser section and the rear volute near the air outlet avoids obstructing the airflow at the connection point, further improving the airflow velocity and volume.

[0027] An embodiment of this utility model also provides a cabinet air conditioner, including a main body and the aforementioned air duct structure. The air duct structure is disposed on the main body and includes a volute and an impeller. A front volute tongue is provided on the volute corresponding to the air outlet side of the impeller. The radius of the R-angle of the front volute tongue is greater than or equal to 6.3 mm and less than 8.3 mm; and / or,

[0028] The width of the volute gap formed between the front volute tongue and the impeller is greater than or equal to 4 mm and less than 5 mm; and / or,

[0029] The enclosing angle of the anterior cochlear tongue is greater than or equal to 23° and less than 27°.

[0030] Benefiting from the advantages of this air duct structure, the cabinet air conditioner provided in this embodiment has the characteristics of faster airflow and larger air volume. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the air duct structure provided in an embodiment of the present utility model;

[0032] Figure 2 This is a schematic diagram of the structure between the front volute tongue and the impeller;

[0033] Figure 3 The graph shows the relationship between the radius r and the air volume growth rate obtained from the simulation analysis of the duct structure with the radius of the R-angle as the variable.

[0034] Figure 4 The graph shows the relationship between the width L of the volute tongue gap and the air volume growth rate, obtained from the simulation analysis of the duct structure with the volute tongue gap width L as the variable.

[0035] Figure 5 The graph shows the relationship between the volute tongue angle α and the air volume growth rate, obtained from the simulation analysis of the duct structure with the volute tongue angle α as the variable.

[0036] Figure 6 The fluid simulation diagram is shown when the diffusion angle of the air duct structure is 27°.

[0037] Figure 7 The graph shows the relationship between the diffusion angle β and the air volume growth rate, obtained from the simulation analysis of the duct structure with the diffusion angle β as the variable.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100 - Air duct structure; 110 - Impeller; 120 - Front volute tongue; 130 - Front volute; 140 - Rear volute; 150 - Impeller chamber; 151 - Air outlet; 152 - Air inlet; 160 - Front diffuser section; 170 - Rear diffuser section. Detailed Implementation

[0040] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0041] Please see Figure 1 , Figure 1 The diagram shown is a schematic diagram of the air duct structure 100 provided in this embodiment.

[0042] The air duct structure 100 provided in this embodiment includes a volute and an impeller 110 installed inside the volute. The volute includes a front volute 130 and a rear volute 140, which are arranged opposite to each other to form an impeller chamber 150 for accommodating the impeller 110.

[0043] The impeller chamber 150 has an air outlet 151 corresponding to the air outlet side of the impeller 110, and an air inlet 152 corresponding to the air inlet side of the impeller 110. In practical applications, when the impeller 110 rotates, external air is drawn into the impeller chamber 150 through the air inlet 152 and then blown out to the target environment through the air outlet 151.

[0044] The front volute 130 is provided with a front volute tongue 120 at the air outlet side corresponding to the impeller 110. Please refer to the relevant documentation. Figure 2 , Figure 2 The diagram shows the structure between the front volute tongue 120 and the impeller 110.

[0045] In this embodiment, in order to increase air volume, the radius r of the R angle of the front volute tongue 120 is greater than or equal to 6.3 mm and less than 8.3 mm.

[0046] Please refer to the following: Figure 3 , Figure 3 The figure shows the relationship between the radius r and the air volume growth rate obtained from the simulation analysis of the duct structure 100 with the radius of the R-angle as the variable. The horizontal axis represents the value of the radius r in millimeters, and the vertical axis represents the air volume growth rate.

[0047] The existing cabinet air conditioner's front volute has a radius r of 8.3mm for the front angle of the 120mm diameter. Figure 3 As can be seen, in this embodiment, the radius r of the R angle of the front volute tongue 120 is greater than or equal to 6.3mm and less than 8.3mm. Compared with the prior art, the air volume growth rate can be increased to a maximum of 1.9%.

[0048] Specifically, the radius r can be 7.3 mm, in which case the air volume growth rate is 1.1%; the radius r can also be 6.3 mm, in which case the air volume growth rate is the largest, at 1.9%. Preferably, in this embodiment, the radius r is 6.3 mm.

[0049] Furthermore, in this embodiment, in order to further increase the air volume, the width L of the volute gap formed between the front volute tongue 120 and the impeller 110 is greater than or equal to 4 mm and less than 5 mm.

[0050] Please refer to the following: Figure 4 , Figure 4 The figure shows the relationship between the width L of the volute tongue gap and the airflow growth rate, obtained from a simulation analysis of the duct structure 100 with the volute tongue gap width L as the variable. The horizontal axis represents the volute tongue gap width L in millimeters, and the vertical axis represents the airflow growth rate.

[0051] The existing cabinet air conditioner has a volute clearance width of 5mm, which is... Figure 4 As can be seen, in this embodiment, the width L of the volute tongue gap is greater than or equal to 4mm and less than 5mm. Compared with the prior art, the air volume growth rate can be increased to a maximum of 3.2%.

[0052] Specifically, the width L can be 4.5mm, in which case the air volume growth rate is 1.1%; the width L can also be 4mm, in which case the air volume growth rate is the largest, at 3.2%. Preferably, in this embodiment, the width L is 4mm.

[0053] To further increase airflow, in this embodiment, the volute wrap angle α of the front volute 120 is greater than or equal to 23° and less than 27°. It can be understood that the volute wrap angle α is the angle formed by the lines connecting the two ends of the front volute 120 in the rotation direction of the impeller 110 to the center of the impeller 110.

[0054] Please refer to the following: Figure 5 , Figure 5 The figure shows the relationship between the volute tongue angle α and the air volume growth rate, obtained from simulation analysis of the duct structure 100 with the volute tongue angle α as the variable. The horizontal axis represents the value of the volute tongue angle α, and the vertical axis represents the air volume growth rate.

[0055] The existing cabinet air conditioner has a volute angle of 27°, which is... Figure 5As can be seen, in this embodiment, the volute wrap angle α of the front volute 120 is greater than or equal to 23° and less than 27°. Compared with the prior art, the air volume growth rate can be increased to a maximum of 1.2%.

[0056] Specifically, the volute tongue angle α can be 25°, in which case the air volume growth rate is 0.6%; the volute tongue angle α can also be 23°, in which case the air volume growth rate is the largest, at 1.2%. Preferably, in this embodiment, the volute tongue angle α is 23°.

[0057] As can be seen, in this embodiment, the radius r of the R-angle of the front volute tongue 120, the width L of the volute tongue gap, and the volute tongue wrap angle α are all taken as optimal values, that is, the radius r of the R-angle is 6.3 mm, the width L of the volute tongue gap is 4 mm, and the volute tongue wrap angle α is 23°. Therefore, when the air duct structure 100 provided in this embodiment is applied to a cabinet air conditioner, it can enable the cabinet air conditioner to obtain the maximum air volume.

[0058] Please continue reading. Figure 1 The air duct structure 100 also includes a front diffuser section 160 and a rear diffuser section 170. The front diffuser section 160 is located on the side of the front volute 130 near the air outlet 151 and is connected to the front volute tongue 120. The rear diffuser section 170 is located on the side of the rear volute 140 near the air outlet 151 and is connected to the rear volute 140.

[0059] A diffusion angle β is formed between the front diffusion section 160 and the rear diffusion section 170. In order to further improve the outlet air velocity and air volume of the duct structure 100, in this embodiment, the diffusion angle β is greater than 21° and less than or equal to 28°.

[0060] When the diffusion angle β is greater than 21° and less than or equal to 28°, the main flow direction of the air outlet 151 is basically parallel to the front diffusion section 160, which further improves the air velocity and air volume of the outlet.

[0061] Please refer to the following: Figure 6 and Figure 7 , Figure 6 The figure shown is a fluid simulation diagram with a diffusion angle of 27° for the duct structure 100. Figure 7 The figure shows the relationship between the diffusion angle β and the air volume growth rate, obtained from a simulation analysis of the duct structure 100 with the diffusion angle β as the variable. The horizontal axis represents the value of the diffusion angle β, and the vertical axis represents the air volume growth rate.

[0062] The existing cabinet air conditioner has a diffusion angle of 21°, which is... Figure 7 As can be seen, in this embodiment, the diffusion angle β is greater than 21° and less than or equal to 28°. Compared with the prior art, the air volume growth rate can be increased to a maximum of 1.1%.

[0063] Specifically, the diffusion angle β can be 23°, in which case the air volume growth rate is 0.5%; the diffusion angle β can also be 25°, in which case the air volume growth rate is 0.9%; the diffusion angle β can also be 27°, in which case the air volume growth rate is the largest, at 1.1%. Preferably, in this embodiment, the diffusion angle β is 27°.

[0064] In order to further improve the airflow velocity and air volume, in this embodiment, the front diffuser section 160 and the front volute tongue 120 are smoothly connected, and the rear diffuser section 170 and the rear volute 140 are connected and smoothly connected to the end near the air outlet 151.

[0065] The smooth transition between the front diffuser section 160 and the front volute tongue 120 avoids obstructing the airflow at the connection point between the two, further improving the airflow velocity and volume. The smooth transition between the rear diffuser section 170 and the rear volute 140 near the air outlet 151 avoids obstructing the airflow at the connection point between the two, further improving the airflow velocity and volume, and reducing noise.

[0066] In summary, the air duct structure 100 provided in this embodiment can improve the airflow velocity and air volume of the cabinet air conditioner, and can reduce the noise of the cabinet air conditioner.

[0067] In addition, this embodiment also provides a cabinet air conditioner, including a main body and the aforementioned air duct structure 100, the air duct structure 100 being disposed on the main body. Benefiting from the beneficial effects of the air duct structure 100, the cabinet air conditioner provided in this embodiment has the characteristics of faster airflow speed, larger air volume and lower noise.

[0068] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air duct structure characterized by, The volute structure (100) comprises a volute and an impeller (110), the volute comprises a front volute (130) and a rear volute (140), the front volute (130) and the rear volute (140) are oppositely arranged to enclose an impeller chamber (150) for accommodating the impeller (110); The front volute (130) is provided with a front volute tongue (120) corresponding to the position of the outflow side of the impeller (110), the radius of the R angle of the front volute tongue (120) is greater than or equal to 6.3 mm and less than 8.3 mm; and / or, the width of the volute tongue gap formed between the front volute tongue (120) and the impeller (110) is greater than or equal to 4 mm and less than 5 mm; and / or, The volute tongue wrap angle of the front volute tongue (120) is greater than or equal to 23° and less than 27°, wherein the volute tongue wrap angle refers to the included angle formed by the lines connecting the two ends of the front volute tongue (120) in the rotation direction of the impeller (110) and the center of the impeller (110).

2. The air duct structure according to claim 1, wherein The radius of the R angle is 6.3 mm or 7.3 mm.

3. The air duct structure according to claim 1, wherein The width of the volute tongue gap is 4 mm or 4.5 mm.

4. The air duct structure according to claim 1, wherein The volute tongue wrap angle is 23° or 25°.

5. The air duct structure according to claim 1, wherein The radius of the R angle is 6.3 mm, the width of the volute tongue gap is 4 mm, and the volute tongue wrap angle is 23°.

6. The air duct structure according to claim 1, wherein The impeller chamber (150) has an air outlet (151) corresponding to the outflow side of the impeller (110), and the volute structure (100) further comprises a front diffuser section (160) and a rear diffuser section (170), the front diffuser section (160) is arranged on the side of the front volute (130) close to the air outlet (151) and is connected with the front volute tongue (120); The rear diffuser section (170) is arranged on the side of the rear volute (140) close to the air outlet (151) and is connected with the rear volute (140); an expansion angle is formed between the front diffuser section (160) and the rear diffuser section (170), and the expansion angle is greater than 21° and less than or equal to 28°.

7. The air duct structure according to claim 6, wherein The expansion angle is 27°.

8. The air duct structure according to claim 6, wherein The front diffuser section (160) and the front volute tongue (120) are smoothly transitioned; and / or, The rear diffuser section (170) is connected with and smoothly transitioned to the end of the rear volute (140) close to the air outlet (151).

9. A cabinet air conditioner, characterized by, The volute structure (100) as claimed in any one of claims 1-8 is arranged on the main body.

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