CN211575477U - Volute tongue structure and air conditioner - Google Patents

Abstract

The utility model relates to a snail tongue structure and air conditioner, snail tongue structure set up in the casing, and snail tongue structure includes the snail tongue, and snail tongue structure is still including adjusting the structure, and the distance between the inside fan blade of adjustment structure self-adaptation adjustment snail tongue and casing. The utility model adjusts the distance between the volute tongue and the fan blade by arranging the self-adaptive adjusting mechanism, on 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 airflow impacting the volute tongue is reduced, and the comfort of a user is improved.

Description

Volute tongue structure and air conditioner

Technical Field

The utility model relates to an air conditioner technical field particularly, relates to a snail tongue structure and air conditioner.

Background

At present, a cross-flow fan air duct and a fan blade are mostly adopted by an indoor unit of an air conditioner and a hanging machine, in the operation process of the cross-flow fan blade, most of air flow flows out of the indoor unit of the air conditioner due to the action of centrifugal force, and a part of air flow collides with a volute tongue to generate shunt flow and flows back to the cross-flow fan blade through a gap between the cross-flow fan and the volute tongue to form an eccentric vortex.

As shown in fig. 1, a conventional air-conditioning indoor unit includes a casing 100, a fan blade 300 and a volute tongue 210 are disposed in the casing 100, and the volute tongue 210 is stationary, so that on one hand, impact noise and pulsation noise are generated when airflow collides with the volute tongue, which affects user experience; on the other hand, due to the eccentric vortex characteristic of the cross-flow fan air duct and different application scenes of the air conditioner, when a low wind level is adopted, the area of the eccentric vortex in the air duct is increased easily, so that the air flow of the system is unstable, the effective air flow at an air outlet is reduced, the performance of the whole air conditioner is directly influenced, and the experience of a user is poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the first aspect of the present invention provides a volute tongue structure, the volute tongue structure is disposed in a casing, the volute tongue structure includes a volute tongue, the volute tongue structure further includes an adjusting structure, the adjusting structure is adaptive to adjust the volute tongue and a distance between blades inside the casing.

The utility model adjusts the distance between the volute tongue and the fan blade by arranging the self-adaptive adjusting mechanism, on 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 airflow impacting the volute tongue is reduced, and the comfort of a user is improved.

Furthermore, the adjusting structure comprises a telescopic mechanism and a rotating shaft, wherein the fixed end of the telescopic mechanism is connected with the shell, and the free end of the telescopic mechanism is connected with 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.

The utility model discloses a set up telescopic machanism and pivot, convert telescopic machanism's concertina movement into the rotation of snail tongue, simple structure, easily installation.

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

By adopting the spring or the hydraulic mechanism with prestress, on one hand, when the pressure of the air channel is less than the prestress of the telescopic mechanism, the telescopic mechanism extends and drives the volute tongue to rotate, so that the distance between the volute tongue and the fan blade is reduced, the area of an eccentric vortex is reduced, and the air outlet efficiency of the air channel is improved; on the other hand, the prestressed spring or the hydraulic mechanism has the advantages of simple structure, convenience in installation and low cost.

Furthermore, the prestress of the telescopic mechanism is 3N-5N.

Further, the volute tongue structure also comprises a pressure detection component and/or a speed detection component.

The utility model discloses a set up pressure detection part and/or speed detection part in snail tongue structure, the automatic operating mode of knowing the air conditioner based on the pressure and/or the speed that detect, the position of self-adaptation adjustment snail tongue to reduce eccentric whirlpool area, improve the air-out efficiency in wind channel, improve user experience.

Further, the pressure detection part and/or the speed detection part are/is arranged at the end part of the volute tongue close to the rotating shaft.

Furthermore, the rotation direction of the volute tongue faces the circle center direction of the fan blade.

Furthermore, the volute tongue structure is positioned at the air outlet of the fan blade.

Furthermore, the included angle range between the extreme positions of the rotation of the volute tongue is 11-17 degrees.

A second aspect of the present invention provides an air conditioner, the air conditioner comprises a fan blade and a volute tongue structure.

Drawings

Fig. 1 is a schematic structural view of a conventional air conditioner indoor unit;

fig. 2 is a schematic view of a volute tongue according to a first embodiment of the present invention;

fig. 3 is a partial enlarged view of a volute tongue structure according to a first embodiment of the present invention;

fig. 4 is a schematic view of a volute tongue according to a second embodiment of the present invention;

fig. 5 is a schematic view of a volute tongue according to a third embodiment of the present invention;

fig. 6 is a partial enlarged view of a volute tongue structure according to a third embodiment of the present invention;

description of reference numerals:

100-a housing; 200-volute tongue structure; 210-volute tongue; 220-a rotating shaft; 230-an adjustment structure; 231-a spring with pre-stress; 232-support bar; 233-a pressure detection component; 300-fan blades;

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures 1-6 are described in detail below.

Example one

Referring to fig. 2, a first aspect of the present invention provides a volute tongue structure 200, wherein the volute tongue structure 200 is disposed in a casing 100, the volute tongue structure 200 includes a volute tongue 210, the volute tongue structure 200 further includes an adjusting structure 230, and the adjusting structure 230 is capable of adaptively adjusting a distance between the volute tongue 210 and a fan blade inside the casing 100.

It should be noted that the adaptive adjustment structure 230 automatically adjusts the distance between the volute tongue 210 and the fan blade along with the change of the pressure in the air duct or the speed of the fan blade, and is different from the conventional detection feedback control motor based on the pressure or the speed of the fan blade that drives the volute tongue 210 to move through a transmission mechanism.

Therefore, the utility model discloses a set up the distance between self-adaptation adjustment mechanism adjustment snail tongue 210 and the fan blade, on the one hand, reduce the area of eccentric vortex, reduce the air current backward flow, improve the air-out efficiency of air duct system, improve the performance of air conditioner; on the other hand, the impact noise of the airflow impacting the volute tongue 210 is reduced, and the comfort of the user is improved.

Referring to fig. 2, the adjusting structure 230 includes a telescopic mechanism and a rotating shaft 220, wherein a fixed end of the telescopic mechanism is connected to the housing 100, and a free end of the telescopic mechanism is connected to the volute tongue 210; the rotating shaft 220 is disposed in the housing 100, and the retractable mechanism drives the volute tongue 210 to rotate around the rotating shaft 220.

Referring to fig. 2, the rotation direction of the volute tongue 210 faces the center of the fan blade.

Referring to fig. 2, the volute tongue structure 200 is located at the wind outlet of the fan blade.

Therefore, the utility model discloses a set up telescopic machanism and pivot 220, convert telescopic machanism's concertina movement into snail tongue 210's rotation, simple structure, easily installation.

Specifically, the prestress of the telescopic mechanism is 3N-5N.

Referring to fig. 3, the telescoping mechanism is preferably a spring 231 with a pre-stress.

Example two

Referring to fig. 4 and 5, in contrast to the first embodiment: the telescopic mechanism is a support rod, the support rod uses gas and liquid as an elastic element of working media, and can be a hydraulic support rod or a pneumatic support rod, and the pneumatic support rod is a gas spring.

Therefore, the utility model discloses an adopt spring 231 or bracing piece 232 that have prestressing force, on the one hand, when wind channel pressure is less than the prestressing force of telescopic machanism, telescopic machanism extends to drive the snail tongue 210 and rotate, reduce the distance between snail tongue 210 and the fan blade, thereby reduce the area of eccentric vortex, improve the air-out efficiency in wind channel; on the other hand, the prestressed spring 231 or the supporting rod 232 has a simple structure, is convenient to install and is low in cost.

EXAMPLE III

Referring to fig. 5, the difference between the first embodiment and the second embodiment is that the volute tongue structure 200 further includes a pressure detecting component 233 and/or a speed detecting component (not shown in the figure), the pressure detecting component 233 is a pressure sensor, and the pressure sensor is located at an end of the volute tongue 210 close to the rotating shaft 220 and is used for detecting the pressure of the air duct; the speed detecting component is located at an end of the volute tongue 210 close to the rotating shaft 220, and is used for detecting the wind speed of the wind channel.

The utility model discloses a set up pressure detection part 233 and/or speed detection part in snail tongue structure 200, the automatic operating mode of knowing the air conditioner based on the pressure and/or the speed that detect, the position of self-adaptation adjustment snail tongue 210 to reduce eccentric whirlpool area, improve the air-out efficiency in wind channel, improve user experience.

When the air duct pressure detected by the pressure sensor is greater than or equal to a preset pressure value and/or the wind speed of the air 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, along with the increase of the air duct pressure and/or the wind speed of the air duct, the rotating direction of the volute tongue 210 is far away from the fan blade, and the distance between the volute tongue 210 and the fan blade is increased.

Preferably, referring to fig. 6 and table one, the preset pressure value is between-20 Pa and 100Pa, and the speed of the fan blade is between 4m/s and 12 m/s.

When the wind channel pressure is-20 Pa and/or the wind speed is 4m/s, the volute tongue 210 is at the position 5, when the wind channel pressure is-20 Pa and/or the wind speed is 4m/s, the volute tongue 210 is at the position 4, when the wind channel pressure is-40 Pa and/or the wind speed is 6m/s, the volute tongue 210 is at the position 3, when the wind channel pressure is-50 Pa and/or the wind speed is 10m/s, the volute tongue 210 is at the position 2, and when the wind channel pressure is-100 Pa and/or the wind speed is 12m/s, the volute tongue 210 is at the position 1.

Referring to fig. 6, the included angle between the extreme positions of the rotation of the volute tongue 210 ranges from 11 ° to 17 °, i.e., the included angle between the position 1 of the volute tongue 210 and the position 5 of the volute tongue 210 ranges from 11 ° to 17 °.

Table for corresponding relation between one volute tongue position and air duct pressure and air speed

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

A second aspect of the present invention provides an air conditioner, the air conditioner comprises a fan blade and the above volute tongue structure 200.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims (10)

1. A volute tongue structure (200), wherein the volute tongue structure (200) is arranged in a shell (100), the volute tongue structure (200) comprises a volute tongue (210), and the volute tongue structure (200) is characterized by further comprising an adjusting structure (230), and the adjusting structure (230) can adaptively adjust the distance between the volute tongue (210) and a fan blade (300) in the shell (100).

2. The volute tongue structure (200) of claim 1, wherein the adjustment structure (230) comprises a telescoping mechanism and a rotating shaft (220), wherein a fixed end of the telescoping mechanism is connected with the housing (100), and a free end of the telescoping mechanism is connected with 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).

3. The volute tongue structure (200) of claim 2, wherein the telescoping mechanism is a pre-stressed spring (231) or a support rod (232).

4. The volute tongue structure (200) of claim 3, wherein the pre-stress of the retraction mechanism is between 3N and 5N.

5. The volute tongue structure (200) of claim 2, further comprising a pressure detection component (233) and/or a speed detection component for detecting a pressure and a wind speed of the wind channel, respectively.

6. The volute tongue structure (200) of claim 5, wherein the pressure detecting component (233) and/or the speed detecting component is disposed at an end of the volute tongue (210) proximate to the shaft (220).

7. The volute tongue structure (200) of claim 2, wherein the direction of rotation of the volute tongue (210) is towards the center of the fan blade (300).

8. The volute tongue structure (200) of claim 2, wherein the volute tongue structure (200) is located at an air outlet of the fan blade (300).

9. The volute tongue structure (200) of claim 2, wherein the included angle between the extreme positions of rotation of the volute tongue (210) is in the range of 11 ° to 17 °.

10. An air conditioner, characterized in that, comprises a fan blade (300) and a volute tongue structure (200) of any one of claims 1-9.

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