Volute structure and cabinet air conditioner
By optimizing the length and shape of the rear volute tongue in the volute structure and combining it with a specific arc segment design, the problem of insufficient airflow in cabinet air conditioners has been solved, resulting in increased airflow and reduced noise, thus improving the user experience.
Patent Information
- Application Number
- CN202520166534.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-01-23
AI Technical Summary
The length of the rear volute of existing cabinet air conditioners is unreasonable, resulting in insufficient airflow and a poor user experience.
The length and shape of the volute tongue are optimized to ensure that it is within the range of 17.7mm to 31.7mm. Combined with a specific arc segment design, the gap and radius ratio between the impeller and the volute are increased, reducing airflow separation and turbulence, and improving airflow concentration.
It increased the airflow of the cabinet air conditioner, reduced noise, and improved the user experience.
Smart Images
Figure CN223676594U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air conditioning technical field, specifically, a volute structure and cabinet air conditioner are provided. BACKGROUND
[0002] In the cabinet air conditioner, the volute tongue parameter and the air volume and the noise have the close relationship, the volute tongue parameter includes the rear volute tongue length etc.
[0003] At present, the rear volute tongue length size of cabinet air conditioner on the market is not reasonable, and the cabinet air conditioner generally has the problem of small air volume, and the user experience is poor. UTILITY MODEL CONTENTS
[0004] The utility model solves the problem that the rear volute tongue length size of the existing cabinet air conditioner is not reasonable, resulting in small air volume of the cabinet air conditioner.
[0005] To solve the above problems, the embodiment of the utility model provides a volute structure which can improve the air volume and obtain better user experience.
[0006] The embodiment of the utility model provides a technical scheme:
[0007] A volute structure, comprising a rear volute and an impeller, wherein one end of the rear volute corresponding to the air inlet side of the impeller is provided with a rear volute tongue, and the length of the rear volute tongue is greater than or equal to 17.7 mm and less than 27.7 mm; or,
[0008] The length of the rear volute tongue is greater than 27.7 mm and less than or equal to 31.7 mm.
[0009] The volute structure provided in the embodiment of the utility model can increase the air volume of the cabinet air conditioner when the length of the rear volute tongue is greater than or equal to 17.7 mm and less than 27.7 mm, and the maximum air volume growth rate is 1.6%. When the length of the rear volute tongue is greater than or equal to 27.7 mm and less than or equal to 31.7 mm, the air volume of the cabinet air conditioner can be increased, and the maximum air volume growth rate is 2.6%.
[0010] In the optional implementation, the length of the rear volute tongue is 29.7 mm.
[0011] When the length of the rear volute tongue is 29.7 mm, the air volume growth rate of the cabinet air conditioner can reach the maximum, which is 2.6%.
[0012] In the optional implementation, the length of the rear volute tongue is 31.7 mm.
[0013] When the length of the rear volute tongue is 31.7 mm, the air volume growth rate of the cabinet air conditioner can reach 1.3%.
[0014] In an optional embodiment, the length of the rear volute tongue is 22.7 mm.
[0015] When the length of the rear volute tongue is 22.7 mm, the air volume increase rate of the cabinet air conditioner can reach 1.2%.
[0016] In an optional embodiment, the length of the rear volute tongue is 17.7 mm.
[0017] When the length of the rear volute tongue is 17.7 mm, the air volume increase rate of the cabinet air conditioner can reach 1.6%.
[0018] In an optional embodiment, the volute structure further comprises a rear diffuser section, the rear volute comprises a first circular arc section and a second circular arc section, one end of the first circular arc section is connected with the rear volute tongue, the other end of the first circular arc section is connected with one end of the second circular arc section, and the other end of the second circular arc section is connected with the diffuser section.
[0019] The first circular arc section has a first radius size R1, one end of the first circular arc section connected with the rear volute tongue has a preset gap L in the radial direction of the impeller, the radius of the impeller is R3, and R3+L≤R1<1.3R3.
[0020] In fact, the radius of the second circular arc section is greater than that of the first circular arc section, and the distance between the rear volute and the impeller in the radial direction gradually increases from one end of the first circular arc section connected with the rear volute tongue to one end of the second circular arc section connected with the rear diffuser section. When the relationship between the first radius size R1, the preset gap L and the radius R3 of the impeller satisfies R3+L≤R1<1.3R3, the air flow rate can be improved, the air flow can be more concentrated into the rear diffuser section, the air flow separation and turbulence can be reduced, and finally the air volume can be improved.
[0021] In an optional embodiment, the rear diffuser section and the second circular arc section are smoothly connected, and the second circular arc section has a second radius size R2, R1<R2≤1.6R3.
[0022] In an optional embodiment, the radius R3 of the impeller is 71 mm, the preset gap L is 5 mm, 80 mm≤R1≤90 mm, and 110 mm≤R2≤113 mm.
[0023] The air flow can be more concentrated into the rear diffuser section, the air flow separation and turbulence can be reduced, and the noise can be reduced.
[0024] In an optional embodiment, the first radius size R1 is 86.3 mm or 89.3 mm, the second radius size R2 is 111.2 mm, and the central angle corresponding to the first circular arc section is 50° and the central angle corresponding to the second circular arc section is 40°.
[0025] The first circular arc segment corresponds to a central angle greater than that of the second circular arc segment, so that the airflow has a wider flow path and can be uniformly distributed in a larger range, thereby improving the air outlet efficiency.
[0026] The embodiment of the utility model provides a cabinet air conditioner, including main part and preceding worm structure, worm structure set up on the main part, worm structure includes rear volute and impeller, the rear volute corresponds the one end of the air inlet side of impeller and is provided with rear volute tongue, the length of rear volute tongue is greater than or equal to 17.7mm, and less than 27.7mm, or, the length of rear volute tongue is greater than 27.7mm, and less than or equal to 31.7mm.
[0027] Benefiting from the beneficial effects of the worm structure, the cabinet air conditioner provided by the embodiment has the characteristic of greater air volume. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 The structure diagram of the worm structure provided by the embodiment of the utility model is shown in the figure.
[0029] Figure 2 The structure diagram between the rear volute tongue and the impeller is shown in the figure.
[0030] Figure 3 The relationship diagram between the length H of the rear volute tongue and the air volume growth rate obtained by simulating and analyzing the worm structure with the length H of the rear volute tongue as a variable is shown in the figure.
[0031] MARKS OF THE DRAWINGS:
[0032] 100-worm structure;110-rear volute;111-rear volute tongue;112-first circular arc segment;113-second circular arc segment;120-impeller;130-rear diffuser segment;140-front volute;150-impeller chamber;151-air outlet;152-air inlet. DETAILED DESCRIPTION
[0033] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.
[0034] Please refer to Figure 1 , Figure 1 The structure diagram of the worm structure 100 provided by the embodiment is shown in the figure.
[0035] The worm structure 100 provided by the embodiment includes the rear volute 110 and the impeller 120, and actually also includes the front volute 140. The front volute 140 is arranged opposite to the rear volute 110 and encloses the impeller chamber 150 accommodating the impeller 120.
[0036] The impeller chamber 150 has an air outlet 151 corresponding to the air outlet side of the impeller 120, and an air inlet 152 corresponding to the air inlet side of the impeller 120. In actual application, the impeller 120 rotates, and external air is sucked into the impeller chamber 150 through the air inlet 152, and then blown out to the target environment through the air outlet 151.
[0037] The rear volute 110 is provided with a rear volute tongue 111 at one end corresponding to the air inlet side of the impeller 120. Please refer to Figure 2 , Figure 2 The structure between the rear volute tongue 111 and the impeller 120 is shown.
[0038] In this embodiment, in order to improve the air volume, the length H of the rear volute tongue 111 is greater than or equal to 17.7 mm and less than 27.7 mm, or the length H of the rear volute tongue 111 is greater than 27.7 mm and less than or equal to 31.7 mm.
[0039] Please refer to Figure 3 , Figure 3 The relationship between the length H of the rear volute tongue 111 and the air volume growth rate obtained by simulating and analyzing the volute structure 100 with the length H of the rear volute tongue 111 as a variable is shown. The abscissa is the size adjusted on the basis of the length 27.7 mm of the rear volute tongue 111 of the existing cabinet air conditioner, and the ordinate is the air volume growth rate.
[0040] The length of the rear volute tongue 111 of the existing cabinet air conditioner is 27.7 mm, and Figure 3 It can be seen that in this embodiment, when the length H of the rear volute tongue 111 is greater than or equal to 17.7 mm and less than 27.7 mm, the air volume is increased, and the maximum air volume growth rate is 1.6%; when the length H of the rear volute tongue 111 is greater than 27.7 mm and less than or equal to 31.7 mm, the air volume is increased, and the maximum air volume growth rate is 2.6%.
[0041] Specifically, the length H of the rear volute tongue 111 can be 17.7 mm, at which time the air volume growth rate is 1.6%; the length H of the rear volute tongue 111 can also be 22.7 mm, at which time the air volume growth rate is 1.2%; the length H of the rear volute tongue 111 can also be 29.7 mm, at which time the air volume growth rate is 2.6%; and the length H of the rear volute tongue 111 can also be 31.7 mm, at which time the air volume growth rate is 1.3%.
[0042] As a preferred, in this embodiment, the length H of the rear volute tongue 111 is 29.7 mm, that is, the air volume growth rate is the maximum value 2.6%, that is, the air volume of the cabinet air conditioner can be greatly improved.
[0043] Please continue to refer to Figure 1, the volute structure 100 further comprises a rear diffuser section 130, the rear volute 110 comprises a first circular arc section 112 and a second circular arc section 113, one end of the first circular arc section 112 is connected with the rear volute tongue 111, the other end of the first circular arc section 112 is connected with one end of the second circular arc section 113, and the other end of the second circular arc section 113 is connected with the diffuser section. The first circular arc section 112 has a first radius size R1, the one end of the first circular arc section 112 connected with the rear volute tongue 111 and the impeller 120 has a preset gap L in the radial direction, the radius of the impeller 120 is R3, and R3+L≤R1<1.3R3.
[0044] In fact, the radius of the second circular arc section 113 is greater than the radius of the first circular arc section 112, and the distance between the rear volute 110 and the impeller 120 in the radial direction gradually increases from the one end of the first circular arc section 112 connected with the rear volute tongue 111 to the one end of the second circular arc section 113 connected with the rear diffuser section 130.
[0045] When R3+L≤R1<1.3R3, compared with R1 being greater than or equal to 1.3 times of R3, when the impeller 120 rotates at the same speed, and the diffuser section remains unchanged, the smaller radius size can reduce the flow area inside the volute, thereby increasing the gas flow rate, so that the gas flow more concentratedly enters the diffuser section, reduces the gas flow separation and turbulence, and reduces the abnormal sound generated by the gas flow.
[0046] In the embodiment, the rear diffuser section 130 and the second circular arc section 113 are smoothly transitioned, and the second circular arc section 113 has a second radius size R2, R1
[0047] In the embodiment, the radius R3 of the impeller 120 is 71 mm, the preset gap L is 5 mm, 80mm≤R1≤90mm, and 110mm≤R2≤113mm.
[0048] It can be understood that, since 80mm≤R1≤90mm and 110mm≤R2≤113mm, the radius of the one end of the second circular arc section 113 close to the rear diffuser section 130 is avoided to be too small, so that the gas flow separation or turbulence is avoided, and the circular arc radius of the one end of the second circular arc section 113 close to the rear diffuser section 130 is avoided to be too large, so that the gas flow area is avoided to be too large, thereby avoiding the gas flow rate to be greatly reduced and ensuring the air output.
[0049] For example, when R3 is 71 mm and L is 5 mm, the fan 120 rotates at the same speed, and the air volume is taken as a reference volute with R1 being 92.3 mm and R2 being 113.2 mm.
[0050] When R1 is 86.3 mm and R2 is 111.2 mm, the air volume growth rate is about 2%; when R1 is 89.3 mm and R2 is 112.2 mm, the air volume growth rate is about 1.3%; and when R1 is 95.3 mm and R2 is 114.2 mm, the air volume growth rate is about -3.8%.
[0051] Therefore, in some embodiments, in order to ensure the air volume, R3 is 71 mm, L is 5 mm, R1 is 86.3 mm, and R2 is 111.2 mm. In other embodiments, R3 is 71 mm, L is 5 mm, R1 is 89.3 mm, and R2 is 111.2 mm. In other embodiments, R1 can also be 80 mm, 81 mm, 82 mm, 83 mm, 84 mm, 85 mm, 86 mm, 87 mm, 88 mm, 89 mm, or 90 mm, while R3 and L remain unchanged. R2 can also be 111 mm, 111.5 mm, 112 mm, 112.4 mm, 112.5 mm, 112.8 mm, or 113 mm.
[0052] In the embodiment, the sum of the central angle α corresponding to the first circular segment 112 and the central angle β corresponding to the second circular segment 113 is 90°.
[0053] Preferably, the first radius size R1 is 86.3 mm or 89.3 mm, and the second radius size R2 is 111.2 mm. The first circular segment 112 has a smaller radius, which can make the airflow concentrate quickly at the initial stage of entering the volute, form a higher initial speed, and the larger central angle allows the airflow to have more turning space, reduces local turbulence and separation phenomenon, and improves the uniformity of the airflow. The second circular segment 113 has a larger radius, which can provide a wider flow path for the airflow, so that the airflow can be uniformly distributed in a larger range, and the smaller central angle ensures smooth transition of the airflow to the diffuser section, reduces resistance, and improves efficiency.
[0054] Preferably, the central angle α corresponding to the first circular segment 112 is 50°, and the central angle β corresponding to the second circular segment 113 is 40°.
[0055] In summary, the volute structure 100 provided in the embodiment can improve the air volume of the cabinet air conditioner, reduce noise, and obtain better user experience.
[0056] In addition, the embodiment further provides a cabinet air conditioner, which comprises a main body and the aforementioned volute structure 100, and the volute structure 100 is arranged on the main body. Benefited from the beneficial effects of the volute structure 100, the cabinet air conditioner provided by the embodiment has the characteristics of larger air volume and lower noise.
[0057] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be limited to the range defined by the claims.
Claims
1. A volute structure, characterized by, The length of the rear volute tongue (111) is greater than 27.7mm and less than or equal to 31.7mm. The length of the rear volute tongue (111) is 29.7mm.
2. The spiral case structure according to claim 1, characterized by The length of the rear volute tongue (111) is 31.7mm.
3. The volute structure according to claim 1, characterized by The length of the rear volute tongue (111) is 22.7mm.
4. The spiral case structure according to claim 1, characterized by The length of the rear volute tongue (111) is 17.7mm.
5. The volute structure of claim 1, wherein The volute structure (100) further comprises a rear diffuser section (130), the rear volute (110) comprises a first circular arc section (112) and a second circular arc section (113), one end of the first circular arc section (112) is connected with the rear volute tongue (111), the other end of the first circular arc section (112) is connected with one end of the second circular arc section (113), the other end of the second circular arc section (113) is connected with the diffuser section.
6. The volute structure of claim 1, wherein The first circular arc section (112) has a first radius size R1, one end of the first circular arc section (112) connected with the rear volute tongue (111) has a preset gap L in the radial direction with the impeller (120), the radius of the impeller (120) is R3, R3+L≤R1<1.3R3. The rear diffuser section (130) and the second circular arc section (113) are smoothly connected, and the second circular arc section (113) has a second radius size R2, R1 7. The volute structure according to claim 6, characterized by The radius R3 of the impeller (120) is 71mm, the preset gap L is 5mm, 80mm≤R1≤90mm, 110mm≤R2≤113mm.
8. The volute structure of claim 7, wherein The first radius size R1 is 86.3mm or 89.3mm, the second radius size R2 is 111.2mm, and the central angle corresponding to the first circular arc section (112) is 50°, and the central angle corresponding to the second circular arc section (113) is 40°.
9. The volute structure of claim 8, wherein The volute structure (100) as claimed in any one of claims 1-9 is arranged on the main body.
10. A cabinet air conditioner, characterized in that,