A snail tongue structure and air conditioner

Abstract

The present invention relates to a volute tongue structure and an air conditioner. The volute tongue structure is arranged in a housing, the volute tongue structure includes a volute tongue, and the volute tongue structure also includes an adjustment structure, and the adjustment structure can adaptively adjust the distance between the volute tongue and the fan blade inside the housing. The present invention adjusts the distance between the volute tongue and the fan blade by setting an adaptive adjustment mechanism. On the one hand, the area of ​​the eccentric vortex is reduced, the airflow backflow is reduced, the air outlet efficiency of the air duct system is improved, and the performance of the air conditioner is improved; on the other hand, the impact noise of the airflow colliding with the volute tongue is reduced, and the user's comfort is improved.

Description

Technical Field

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

[0002] At present, most indoor and wall-mounted air conditioners use crossflow fan ducts and fan blades. During the operation of the crossflow fan blades, due to the action of centrifugal force, most of the airflow flows out of the indoor unit of the air conditioner, and a part of the airflow collides with the volute tongue to produce diversion, which flows back to the crossflow fan blade through the gap between the crossflow fan and the volute tongue, forming an eccentric vortex.

[0003] Traditional air conditioner indoor unit Figure 1 As shown, the air conditioner indoor unit includes a shell 100, in which a fan blade 300 and a volute tongue 210 are arranged, and the volute tongue 210 is stationary. On the one hand, the collision of the airflow with the volute tongue will produce impact noise and pulsation noise, affecting the user experience; on the other hand, due to the eccentric vortex characteristics of the cross-flow fan air duct and different application scenarios of the air conditioner, when a low wind speed is used, it is easy to cause the eccentric vortex area in the air duct to increase, resulting in unstable system airflow and a reduction in effective airflow at the outlet, which directly affects the performance of the air conditioner and makes the user experience worse. Summary of the invention

[0004] In order to solve the above technical problems, the first aspect of the present invention provides a volute tongue structure, which is arranged in a shell. The volute tongue structure includes a volute tongue, and the volute tongue structure also includes an adjustment structure. The adjustment structure can adaptively adjust the distance between the volute tongue and the fan blades inside the shell.

[0005] The present invention adjusts the distance between the volute tongue and the fan blade by providing an adaptive adjustment mechanism. On the one hand, it reduces the area of ​​the eccentric vortex, reduces air flow backflow, improves the air outlet efficiency of the air duct system, and improves the performance of the air conditioner; on the other hand, it reduces the impact noise of the air flow colliding with the volute tongue, thereby improving the user's comfort.

[0006] Furthermore, the adjustment structure includes a telescopic mechanism and a rotating shaft, the fixed end of the telescopic mechanism is connected to the shell, and the free end of the telescopic mechanism is connected to the volute tongue; the rotating shaft is arranged in the shell, and the telescopic mechanism drives the volute tongue to rotate around the rotating shaft.

[0007] The invention converts the telescopic movement of the telescopic mechanism into the rotation of the volute tongue by arranging the telescopic mechanism and the rotating shaft, and has a simple structure and is easy to install.

[0008] Furthermore, the telescopic mechanism is a spring or a support rod with prestress.

[0009] The present invention adopts a spring or hydraulic mechanism with prestress. On the one hand, when the air duct pressure is less than the prestress of the telescopic mechanism, the telescopic mechanism extends and drives the volute tongue to rotate, reducing the distance between the volute tongue and the fan blade, thereby reducing the area of ​​the eccentric vortex and improving the air outlet efficiency of the air duct. On the other hand, the prestressed spring or hydraulic mechanism has a simple structure, is easy to install and has low cost.

[0010] Furthermore, the prestress of the telescopic mechanism is between 3N and 5N.

[0011] Furthermore, the volute tongue structure also includes a pressure detection component and / or a speed detection component.

[0012] The present invention automatically obtains the working condition of the air conditioner by arranging a pressure detection component and / or a speed detection component in the volute tongue structure, and adaptively adjusts the position of the volute tongue based on the detected pressure and / or speed, thereby reducing the eccentric vortex area, improving the air outlet efficiency of the air duct, and improving the user experience.

[0013] Furthermore, the pressure detection component and / or the speed detection component is arranged at the end of the volute tongue close to the rotating shaft.

[0014] Furthermore, the direction in which the volute tongue rotates is toward the center of the fan blade.

[0015] Furthermore, the snail tongue structure is located at the air outlet of the fan blade.

[0016] Furthermore, the angle between the extreme positions of the rotation of the volute tongue ranges from 11° to 17°.

[0017] A second aspect of the present invention provides an air conditioner, comprising a fan blade and the above-mentioned volute tongue structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of a traditional air conditioner indoor unit;

[0019] Figure 2 This is a schematic diagram of the snail tongue structure according to the first embodiment of the present invention;

[0020] Figure 3 It is a partial enlarged view of the snail tongue structure described in the first embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the snail tongue structure according to the second embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the snail tongue structure according to the third embodiment of the present invention;

[0023] Figure 6 This is a partial enlarged view of the snail tongue structure described in Example 3 of the present invention;

[0024] Description of reference numerals:

[0025] 100-housing; 200-snail structure; 210-snail; 220-rotating shaft; 230-adjusting structure; 231-prestressed spring; 232-support rod; 233-pressure detection component; 300-fan blade; DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following is a brief description of the present invention in conjunction with the attached drawings. Figure 1-6 The specific embodiments of the present invention are described in detail.

[0027] Embodiment 1

[0028] See attached Figure 2 According to a first aspect of the present invention, there is provided a volute tongue structure 200, wherein the volute tongue structure 200 is disposed in a housing 100, wherein the volute tongue structure 200 comprises a volute tongue 210, and wherein the volute tongue structure 200 further comprises an adjustment structure 230, wherein the adjustment structure 230 can adaptively adjust the distance between the volute tongue 210 and the fan blades inside the housing 100.

[0029] It should be noted that the adaptive adjustment structure 230 automatically adjusts the distance between the volute tongue 210 and the fan blade as the duct pressure or fan blade speed changes, which is different from the conventional pressure or fan blade speed detection feedback control motor driving the movement of the volute tongue 210 through a transmission mechanism.

[0030] Therefore, the present invention adjusts the distance between the volute tongue 210 and the fan blade by providing an adaptive adjustment mechanism. On the one hand, it reduces the area of ​​the eccentric vortex, reduces air flow backflow, improves the air outlet efficiency of the air duct system, and improves the performance of the air conditioner; on the other hand, it reduces the impact noise of the air flow colliding with the volute tongue 210, thereby improving the user's comfort.

[0031] See attached Figure 2 The adjustment structure 230 includes a telescopic mechanism and a rotating shaft 220, the fixed end of the telescopic mechanism is connected to the shell 100, and the free end of the telescopic mechanism is connected to the volute tongue 210; the rotating shaft 220 is arranged in the shell 100, and the telescopic mechanism drives the volute tongue 210 to rotate around the rotating shaft 220.

[0032] See attached Figure 2 The direction in which the volute tongue 210 rotates is toward the center of the fan blade.

[0033] See attached Figure 2 The volute tongue structure 200 is located at the air outlet of the fan blade.

[0034] Therefore, the present invention converts the telescopic movement of the telescopic mechanism into the rotation of the volute 210 by providing the telescopic mechanism and the rotating shaft 220, and has a simple structure and is easy to install.

[0035] Specifically, the prestress of the telescopic mechanism is between 3N and 5N.

[0036] See attached Figure 3 Preferably, the telescopic mechanism is a spring 231 with prestress.

[0037] Embodiment 2

[0038] See attached Figure 4 and 5 , which is different from the first embodiment in that: the telescopic mechanism is a support rod, and the support rod is an elastic element with gas and liquid as working medium, which can be a hydraulic support rod or a pneumatic support rod, and the pneumatic support rod is such as a gas spring.

[0039] Therefore, the present invention adopts a spring 231 or a support rod 232 with prestress. On the one hand, when the air duct pressure is less than the prestress of the telescopic mechanism, the telescopic mechanism extends and drives the volute tongue 210 to rotate, thereby reducing the distance between the volute tongue 210 and the fan blade, thereby reducing the area of ​​the eccentric vortex and improving the air outlet efficiency of the air duct; on the other hand, the prestressed spring 231 or the support rod 232 has a simple structure, is easy to install, and has low cost.

[0040] Embodiment 3

[0041] See attached Figure 5 , which is different from the first and second embodiments: the volute tongue structure 200 also includes a pressure detection component 233 and / or a speed detection component (not shown in the figure), the pressure detection component 233 is a pressure sensor, and the pressure sensor is located at the end of the volute tongue 210 close to the rotating shaft 220, and is used to detect the pressure of the air duct; the speed detection component is located at the end of the volute tongue 210 close to the rotating shaft 220, and is used to detect the wind speed of the air duct.

[0042] The present invention automatically obtains the working condition of the air conditioner by setting a pressure detection component 233 and / or a speed detection component in the volute tongue structure 200, and adaptively adjusts the position of the volute tongue 210 based on the detected pressure and / or speed, thereby reducing the eccentric vortex area, improving the air outlet efficiency of the air duct, and improving the user experience.

[0043] When the duct pressure detected by the pressure sensor is greater than or equal to a preset pressure value and / or the wind speed of the duct detected by the speed detection component is greater than or equal to a preset speed value, the volute tongue 210 rotates around the rotating shaft 220. As the duct pressure and / or the wind speed of the duct increases, the rotation direction of the volute tongue 210 moves away from the fan blade, and the distance between the volute tongue 210 and the fan blade increases.

[0044] Preferably, refer to the attached Figure 6 As shown in Table 1, the preset pressure value is between -20Pa and 100Pa, and the speed of the fan blade is between 4m / s and 12m / s.

[0045] When the air duct pressure is -20Pa and / or the wind speed is 4m / s, the volute tongue 210 is in position 5; when the air duct pressure is -20Pa and / or the wind speed is 4m / s, the volute tongue 210 is in position 4; when the air duct pressure is -40Pa and / or the wind speed is 6m / s, the volute tongue 210 is in position 3; when the air duct pressure is -50Pa and / or the wind speed is 10m / s, the volute tongue 210 is in position 2; when the air duct pressure is -100Pa and / or the wind speed is 12m / s, the volute tongue 210 is in position 1.

[0046] See attached Figure 6 The angle range between the extreme positions of rotation of the volute tongue 210 is between 11° and 17°, that is, the angle range between position 1 of the volute tongue 210 and position 5 of the volute tongue 210 is between 11° and 17°.

[0047] Table 1 Corresponding relationship between the position of the volute tongue and the air duct pressure and wind speed

[0048] Position of snail tongue Snail tongue position 1 Snail tongue position 2 Snail tongue position 3 Snail tongue position 4 Snail tongue position 5 Pressure(Pa) -100 -80 -50 -40 -20 Wind speed (m / s) 12 10 8 6 4

[0049] A second aspect of the present invention provides an air conditioner, comprising a fan blade and the above-mentioned volute tongue structure 200.

[0050] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A volute tongue structure (200), the volute tongue structure (200) being arranged in a housing (100), the volute tongue structure (200) comprising a volute tongue (210), characterized in that: The volute tongue structure (200) further comprises an adjustment structure (230), wherein the adjustment structure (230) can adaptively adjust the distance between the volute tongue (210) and the fan blade (300) inside the housing (100); The adjustment structure (230) comprises a telescopic mechanism and a rotating shaft (220); the fixed end of the telescopic mechanism is connected to the housing (100), and the free end of the telescopic mechanism is connected to the volute tongue (210); the rotating shaft (220) is arranged in the housing (100), and the telescopic mechanism drives the volute tongue (210) to rotate around the rotating shaft (220).

2. The volute tongue structure (200) according to claim 1, characterized in that: The telescopic mechanism is a spring (231) or a support rod (232) with prestress.

3. The volute tongue structure (200) according to claim 2, characterized in that: The prestress of the telescopic mechanism is between 3N and 5N.

4. The volute tongue structure (200) according to claim 1, characterized in that: It also includes a pressure detection component (233) and / or a speed detection component, which are used to detect the pressure and wind speed of the air duct respectively.

5. The volute tongue structure (200) according to claim 4, characterized in that: The pressure detection component (233) and / or the speed detection component is arranged at an end of the volute tongue (210) close to the rotating shaft (220).

6. The volute tongue structure (200) according to claim 1, characterized in that: The direction in which the volute tongue (210) rotates is toward the center of the fan blade (300).

7. The volute tongue structure (200) according to claim 1, characterized in that: The volute tongue structure (200) is located at the air outlet of the fan blade (300).

8. The volute tongue structure (200) according to claim 1, characterized in that: The angle between the extreme rotation positions of the volute tongue (210) ranges from 11° to 17°.

9. An air conditioner, characterized in that: It comprises a fan blade (300) and a volute tongue structure (200) as described in any one of claims 1 to 8.

Images