CN217207023U - Air conditioner spiral case and air conditioner - Google Patents

Abstract

The present disclosure provides an air conditioner volute and an air conditioner. The air-conditioning volute comprises a first volute tongue and a second volute tongue connected with the first volute tongue. The second volute tongue and/or the first volute tongue is provided with at least one step. The air conditioner comprises an impeller and the air conditioner volute. The air conditioner volute and the impeller have a gap. The second volute tongue is additionally arranged on the basis of the original first volute tongue in the air conditioner, and the step part is arranged on the first volute tongue and/or the second volute tongue, so that the size of a gap between the air conditioner volute and the impeller is changed, the backflow of air flow can be effectively inhibited, the air outlet efficiency of the air conditioner is improved, the stability of an eccentric vortex is ensured, and the noise of the air conditioner is avoided.

Description

Air conditioner spiral case and air conditioner

Technical Field

The disclosure relates to the technical field of air conditioners, in particular to an air conditioner volute and an air conditioner.

Background

The existing air conditioner generally adopts a cross-flow fan to exhaust air. The cross-flow fan realizes air exhaust through the rotation of the impeller. When the impeller rotates, airflow enters the blade grids from the opening position of the impeller, passes through the inside of the impeller and is discharged into the volute from the blade grids on the other side to form working airflow. There is also a vortex, called an eccentric vortex, within the cross-flow fan, centered near the air conditioning volute. The existence of the eccentric vortex enables the output end of the impeller to generate a circulating flow, and outside the eccentric vortex, an airflow streamline is in a circular arc shape.

Due to the existence of the eccentric vortex, partial backflow phenomenon of airflow is generated at the outlet of the impeller, and the air outlet efficiency of the cross-flow fan is reduced. Moreover, when air inlet of the existing air conditioner is blocked, the stability of the eccentric vortex cannot be guaranteed due to the influence of the change of the air inlet amount. The eccentric vortex is turbulent continuously, so that the air conditioner generates noise.

SUMMERY OF THE UTILITY MODEL

An object of this disclosure is to provide an air conditioner spiral case and air conditioner, can improve the air-out efficiency of air conditioner to effectively solve the noise problem.

One aspect of the present disclosure provides an air conditioner scroll casing, including:

the first volute tongue and the second volute tongue are connected with the first volute tongue;

the first and/or second volute tongue is provided with at least one step. So set up, can effectively restrain the backward flow of air current, improve the air-out efficiency of air conditioner to guarantee the stability of eccentric vortex, avoided the air conditioner to produce the noise.

Further, the number of the step parts is at least two, and the at least two step parts are arranged at intervals. So set up, can strengthen the function that the air conditioner spiral case restraines the backward flow and stabilizes the eccentric vortex.

Further, the step part is arranged between the first volute tongue and the second volute tongue, the step part comprises a first section and a second section connected with the first section, and the thickness of the second section is smaller than that of the first section. Thereby forming a stepped shape.

Furthermore, the step part is provided with a wind-facing surface, the wind-facing surface is a plane or an arc surface, the linear type is convenient to produce and manufacture, the cost is saved, the arc type enables working airflow to be more stable, and the noise reduction effect is improved.

Further, a connecting section is arranged between the first section and the second section, and the connecting section is a smooth transition section, a right-angle connecting section or an obtuse-angle connecting section. So set up, can guarantee the noise reduction effect.

Further, the first volute tongue and/or the second volute tongue is/are provided with a concave part. The recess portion reinforces the thickness variation effect of the stepped portion.

Further, the number of the concave parts is plural;

the plurality of concave parts are distributed at intervals along a first direction; or

The plurality of concave parts are distributed at intervals along a second direction, and the second direction is perpendicular to the first direction; or

The plurality of concave parts are distributed at intervals along the first direction and the second direction. By the arrangement, the functions of backflow inhibition and eccentric vortex stabilization of the volute tongue are enhanced.

Furthermore, the plurality of concave parts are distributed at intervals along the first direction and the second direction, and the plurality of concave parts distributed at intervals along the first direction and the plurality of concave parts distributed at intervals along the second direction are arranged in a staggered mode. And the structural strength of the air-conditioning volute is improved.

Further, the plurality of concave parts are distributed at intervals along a second direction, and the concave parts extend through along the first direction. The manufacturing cost is saved.

The present disclosure also provides an air conditioner, comprising an impeller and the air conditioner volute; the air conditioner volute and the outer contour line of the impeller are provided with a gap. The air conditioner can better restrain backflow and reduce noise.

Further, the air conditioner spiral case comprises a wind-facing surface, the wind-facing surface faces the impeller, and the contour line of the wind-facing surface is parallel to the contour line of the impeller. So set up for the flow of working air is more stable, guarantees the noise reduction effect.

According to the air conditioner volute, the second volute tongue is additionally arranged on the basis of the original first volute tongue in the air conditioner, and the step part is arranged in the first volute tongue and/or the second volute tongue, so that the size of a gap between the air conditioner volute and the impeller is changed, the backflow of air flow can be effectively inhibited, the air outlet efficiency of the air conditioner is improved, the stability of an eccentric vortex is ensured, and the noise of the air conditioner is avoided.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of an air conditioner volute and air conditioner according to the present disclosure;

FIG. 2 is a schematic diagram illustrating the operation of the air conditioner shown in FIG. 1;

FIG. 3 is an exploded view of the first and second volute tongues of the air conditioning volute of FIG. 1;

FIG. 4 is a schematic diagram of an air conditioning volute according to an embodiment;

FIG. 5 is a schematic view of an air conditioning volute according to another embodiment;

FIG. 6 is a schematic view of an air conditioning volute according to yet another embodiment;

FIG. 7 is a schematic view of an air conditioning volute according to yet another embodiment;

FIG. 8 is a schematic structural view of an embodiment of the air conditioning volute at the concave portion as viewed along the direction K in FIG. 7;

fig. 9 is a schematic structural view of the air conditioning scroll casing at the concave portion as viewed in the K direction in fig. 7 according to another embodiment;

fig. 10 is a schematic structural view of the air conditioning scroll casing at the concave portion as viewed in the K direction in fig. 7 in a further embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in the description and claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The present disclosure provides an air conditioner volute and an air conditioner. The air-conditioning volute comprises a first volute tongue and a second volute tongue connected with the first volute tongue. The second volute tongue and/or the first volute tongue is provided with at least one step. The air conditioner comprises an impeller and the air conditioner volute. The air conditioner volute and the impeller have a gap. The second volute tongue is additionally arranged on the basis of the original first volute tongue in the air conditioner, and the step part is arranged on the first volute tongue and/or the second volute tongue, so that the size of a gap between the air conditioner volute and the impeller is changed, the backflow of air flow can be effectively inhibited, the air outlet efficiency of the air conditioner is improved, the stability of an eccentric vortex is ensured, and the noise of the air conditioner is avoided.

The air conditioner volute and the air conditioner of the present disclosure are described in detail below with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, the present disclosure provides an air conditioner 100 including an impeller 101 and an air conditioning scroll 200. The air conditioning volute 200 and the outer contour of the impeller 101 have a gap 109. The impeller 101 rotates to flow the air, and the air conditioning volute 200 prevents the air from revolving and circulating in the air conditioner 100. As shown in fig. 1, in some embodiments, the air conditioner 100 further includes a front panel 102, a back panel 103, a heat exchanger 104, and a wind deflector 106. The heat exchanger 104 is arranged between the face plate 102 and the back plate 103, the heat exchanger 104 encloses to form an enclosed space, and the impeller 101 is arranged in the enclosed space. The face plate 102 and the back plate 103 are used to fix and support other components. The air conditioner 100 has an air inlet 107 at an upper end thereof and an air outlet 108 at a lower end thereof. The air deflector 106 is movable, and can be used to open and close the air outlet 108 and adjust the wind direction.

Referring to fig. 3, the air conditioning scroll case 200 includes a first scroll tongue 210 and a second scroll tongue 220. The first volute tongue 210 is designed according to the conventional design standard of the volute tongue of the air conditioner, and the second volute tongue 220 serves to reinforce the effect of the first volute tongue 210 on the backflow suppression and the stabilization of the eccentric vortex 110.

In practical applications, as shown in fig. 1 and 2, indoor air enters the air conditioner 100 through the air inlet 107. The impeller 101 rotates and air is influenced by it to flow downwardly through the heat exchanger 104. The heat exchanger 104 exchanges heat with air. The air after heat exchange continues to flow to the impeller 101, and enters the impeller 101 to form a working airflow. The working airflow forms an eccentric vortex 110 proximate to the first volute tongue 210 and the second volute tongue 220. A small part of the airflow flows back into the impeller 101, and a large part of the airflow is collected by the air-conditioning volute 200, guided by the air deflector 106, flows out of the air conditioner 100 from the air outlet 108, and is sent into the room.

As shown in fig. 3 to 5, the second volute tongue 220 and the first volute tongue 210 of the air-conditioning volute 200 are connected. In some embodiments, the second volute tongue 220 and the first volute tongue 210 are integrally manufactured, reducing installation steps. In other embodiments, the second volute tongue 220 and the first volute tongue 210 are independent from each other, so that the shape is simple, the production and the manufacture are convenient, and the cost is saved. The second volute tongue 220 can be fixedly mounted on the first volute tongue 210 in a fastening manner, a screw manner and the like, so that the second volute tongue is convenient to disassemble. It is understood that the first tongue 210 may be in the shape of a long strip, an L-shape, or other structures. The second volute tongue 220 may have a strip shape, an L shape, or other structures, which is not limited in this disclosure.

Optionally, in some embodiments, the second volute tongue 220 and/or the first volute tongue 210 may be made of a sound absorbing material, such as a foam-type material, a cotton-type material, etc., to absorb noise generated by the impeller 101 and the working airflow, thereby improving the experience of the air conditioner 100.

The first volute tongue 210 and/or the second volute tongue 220 is/are provided with at least one step 230. So set up, can effectively restrain the backward flow of air current, improve the air-out efficiency of air conditioner to guarantee the stability of eccentric vortex, avoided the air conditioner to produce the noise. In the embodiment shown in fig. 4, the number of the step 230 is one, and the step 230 is formed between the first volute tongue 210 and the second volute tongue 220, so that the existing first volute tongue 210 can be effectively utilized, and the structural improvement cost is reduced. In other embodiments, the number of the steps 230 may be at least two, that is, the first volute tongue 210 and/or the second volute tongue 220 are provided with at least two steps 230, and the at least two steps 230 are spaced apart from each other, so that the diameter-changing effect can be enhanced, and the backflow inhibiting effect and the eccentric vortex stabilizing effect are better. In the embodiment shown in fig. 5, the step portions 230 are illustrated in two examples. It is understood that the step 230 may be formed separately from the first volute tongue 210, separately from the second volute tongue 220, or between the first volute tongue 210 and the second volute tongue 220.

In some alternative embodiments, step 230 includes a first segment and a second segment connected to the first segment. The thickness of the second section is smaller than that of the first section, so that a stepped shape is formed. In the embodiment shown in fig. 4, the number of the step portions 230 is one, and is formed between the first and second volute tongues 210 and 220. The first segment 231 has a thickness of a1, the second segment 232 has a thickness of a2, and a2 is less than a 1. In the embodiment shown in fig. 5, the number of steps is illustrated as two, and includes a step 230A and a step 230B, and the step 230A is separately formed on the second volute tongue 220. A step 230B is formed between the first volute tongue 210 and the second volute tongue 220. The first section 231A of the step 230A has a thickness of a1, the second section 232A has a thickness of a2, and a2 is less than a 1. The first section 231B of the step 230B has a thickness of a3, the second section 232B has a thickness of a1, and a1 is smaller than a 3.

Thus, taking the number of the stepped portions 230 as an example, it is possible to make the first segment 231 of the stepped portion 230 and the outer contour of the impeller 101 have the first clearance b1 (see fig. 1), the second segment 232 and the outer contour of the impeller 101 have the second clearance b2 (see fig. 1), and the first clearance b1 is smaller than the second clearance b 2. So arranged, the gap 109 (see fig. 1) between the air-conditioning volute 200 and the impeller 101, from the second gap b2 to the first gap b1 and then to the air-conditioning volute 200, produces a diameter-changing effect of narrowing the width and widening the width, the working air flow is difficult to flow back when passing through the gap 109, thereby reducing the generation of the back flow, and the eccentric vortex 110 is stabilized in one place to avoid the turbulence thereof and generate noise.

In some embodiments, as shown in fig. 3, the second volute tongue 220 is formed with a step 230, and the second volute tongue 220 includes two sections with different thicknesses along the direction y shown in fig. 3, i.e., a first section and a second section of the step 230, and the two sections have a difference Δ t in thickness along the direction z shown in fig. 3. The direction z is perpendicular to the direction y. Alternatively, it is found through computational fluid dynamics simulation experiments that the effect of the first volute tongue 210 and the second volute tongue 220 in suppressing backflow and stabilizing the eccentric vortex 110 is optimal when Δ t is between 0.5 mm and 5 mm. Of course, Δ t may be set to other values according to actual needs, and the disclosure does not limit this.

In general, as shown in fig. 4, the length of the second section 232 of the stepped portion 230 in the direction y can be adjusted along with the diameter change of the impeller, so that the second volute tongue 220 has wider applicability and ensures the applicability effect. Optionally, as a result of simulation experiments, the length of the second section 232 is between 0.01 and 0.24 times the diameter of the impeller, which is more effective. Of course, the length of the second segment 232 can be set to other values according to actual needs, and the disclosure does not limit this.

Under the same condition that air inlet of the air conditioner is blocked, a common air conditioner volute and the air conditioner volute 200 are respectively adopted for carrying out a contrast experiment, the noise decibel of the air conditioner at different impeller rotating speeds is measured, and the data are shown in the following table:

according to experimental data, the air conditioner volute 200 can effectively reduce noise of an air conditioner.

In some alternative embodiments, the step 230 has a connecting section between the first section 231 and the second section 232. Alternatively, as shown in fig. 4 and 5, in some embodiments, the connecting segments are right angle connecting segments, which facilitates manufacturing. In other embodiments, the connecting section is an obtuse angle connecting section, so that the diameter-changing effect is further enhanced. In other embodiments, as shown in FIG. 6, the connecting segments are smooth transition segments, which may be understood as arc-shaped segments, to further enhance the diameter-changing effect.

In some alternative embodiments, the stepped portion 230 is provided with a wind facing surface 233 facing the impeller, as shown in fig. 4 and 5, and in some examples, the wind facing surface 233 is a plane, so that the manufacturing cost is low. In another example, as shown in fig. 6, the wind-facing surface 233 is a curved surface, so that the diameter-changing effect is reduced, and noise generated when the working air passes through the gap 109 can be reduced. Further, when the wind-facing surface 233 is a curved surface, the contour line of the wind-facing surface 233 is parallel to the contour line of the impeller 101. For example, the impeller 101 in fig. 1 is circular, and it can be understood that the center of the arc surface facing the wind surface 233 is concentric with the impeller 101, so that the width of the second gap b2 can be kept constant, the flow of the working air flow is more stable, and the noise reduction effect is best. In some embodiments, the connecting sections of the first and second sections 231, 232 are provided as smooth transition sections, for example, the connecting sections are machined into an arc shape. So set up, also can make the transition between second clearance b2 to first clearance b1 more gradual, reduce the noise.

Optionally, referring to fig. 7, the air conditioning volute 200 further includes a recess 240 provided on the second volute tongue 220 and/or the first volute tongue 210. In the disclosed embodiment, the recess 240 is provided on the wind facing surface 233 of the second section 232. The provision of the recessed portion 240 can further enhance the diameter-changing effect of the gap 109.

As shown in fig. 8 to 10, in some embodiments, the number of the concave portions 240 is multiple, and the plurality of concave portions 240 are spaced apart along the first direction x or spaced apart along the second direction y, and the second direction y is perpendicular to the first direction x, so that the backflow suppressing effect is better. Alternatively, the plurality of concave portions 240 are distributed at intervals along both the first direction x and the second direction y. It should be noted that the first direction x is shown in fig. 3 to 7 as a direction perpendicular to the yoz plane.

Further, in some embodiments, the plurality of recesses 240 are spaced apart along the second direction y, and the recesses 240 extend throughout along the first direction x, as shown in fig. 8. In the example shown in fig. 8, the recess 240 is a rectangular long groove, which can save the processing cost. In other embodiments, the recesses 240 are spaced along both the first direction x and the second direction y, as shown in fig. 9. In the example shown in fig. 9, the recessed portions 240 are rectangular short grooves, and the plurality of recessed portions 240 spaced apart along the first direction x and the plurality of recessed portions 240 spaced apart along the second direction y are alternately arranged. Such an arrangement can reduce the structural strength effect of the recess 240 on the second volute tongue 220. Furthermore, the plurality of concave portions 240 are arranged in an array, that is, the plurality of concave portions 240 are spaced along both the first direction x and the second direction y, as shown in fig. 10. In the example shown in fig. 10, the recess 240 is a concave pit, so that the wind noise can be reduced under the condition that the structural strength of the second volute tongue 220 is further ensured. The structure of the concave portion 240 is not limited to the shape structure of the long rectangular groove, the concave pit, and the like, and the present disclosure does not limit this.

Alternatively, it is found through experiments that the depth of the recess 240 along the direction z in fig. 3-7 is between 0.5 mm and 5 mm, so that better backflow suppressing and noise reducing effects can be obtained. Of course, the depth of the concave portion 240 along the direction z may be set to other values according to practical needs, which is not limited by the present disclosure.

The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.

Claims (11)

1. An air conditioning volute, comprising: the first volute tongue and the second volute tongue are connected with the first volute tongue; the first and/or second volute tongue is provided with at least one step.

2. The spiral casing of claim 1 wherein there are at least two steps, and the at least two steps are spaced apart.

3. The air conditioning volute of claim 1, wherein the step comprises a first section and a second section connected to the first section, the second section having a thickness less than a thickness of the first section.

4. The air conditioning volute of claim 3, wherein the step is configured to provide a wind facing surface that is flat or curved.

5. The air conditioning volute of claim 3, wherein the first segment and the second segment have a connecting segment therebetween, the connecting segment being a smooth transition segment, a right angle connecting segment, or an obtuse angle connecting segment.

6. The air conditioning volute of any of claims 1 to 5, wherein the first volute tongue and/or the second volute tongue is provided with a recess.

7. The air conditioning volute of claim 6, wherein the recess is plural;

the plurality of concave parts are distributed at intervals along a first direction; or

The plurality of concave parts are distributed at intervals along a second direction, and the second direction is perpendicular to the first direction; or

The plurality of concave parts are distributed at intervals along the first direction and the second direction.

8. The air conditioning volute of claim 7, wherein the plurality of depressions are spaced apart in both the first direction and the second direction, and wherein the depressions spaced apart in the first direction are staggered with the depressions spaced apart in the second direction.

9. The air conditioning volute of claim 7, wherein the plurality of depressions are spaced apart along the second direction, the depressions extending therethrough along the first direction.

10. An air conditioner comprising an impeller and an air conditioning volute as claimed in any one of claims 1 to 9; the air conditioner volute and the outer contour line of the impeller are provided with a gap.

11. The air conditioner according to claim 10, wherein said air conditioning volute includes a wind-facing surface, said wind-facing surface facing said impeller, the contour line of said wind-facing surface being parallel to the contour line of said impeller.

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