CN213478701U - Air duct component for cross-flow wind wheel and air conditioning equipment with same - Google Patents

Abstract

The utility model discloses an air duct component for through-flow wind wheel and air conditioning equipment who has it, air duct component includes first volute portion and second volute portion, on the cross section perpendicular to the axis of through-flow wind wheel, first volute portion and second volute portion set up relatively, in order to inject the through-flow wind channel between first volute portion and second volute portion, along the axial of through-flow wind wheel, the through-flow wind channel includes middle wind channel section and two tip wind channel sections that are located middle wind channel section both ends respectively, the inner of first volute portion has the volute tongue, on the cross section, cross the volute tongue and make the perpendicular line to second volute portion, the portion that is located the low reaches of perpendicular line of middle wind channel section is middle air-out wind channel, the portion that is located the low reaches of perpendicular line of tip wind channel section is the tip air-out, the cross-sectional area of middle air-out wind channel is S1, the cross-sectional area of tip air-out wind channel is S2, s2 < S1. According to the utility model discloses a wind channel part for through-flow wind wheel can improve the different sound problem of air-out.

Description

Air duct component for cross-flow wind wheel and air conditioning equipment with same

Technical Field

The utility model belongs to the technical field of the wind channel technique and specifically relates to an air conditioning equipment that is used for wind channel part of through-flow wind wheel and has it.

Background

Some air conditioners in the related art adopt the cross flow wind wheel to match the cross flow air duct, however, in the working process of the cross flow wind wheel, the air flow in the whole length range of the cross flow air duct is not uniform, and the problem of air flow noise generated in the cross flow air duct can be caused due to the non-uniform flow.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a wind channel part for through-flow wind wheel can improve the different sound problem of air-out.

The utility model also provides an air conditioning equipment of having above-mentioned wind channel part.

According to the air duct component for the cross-flow wind wheel in the embodiment of the first aspect of the present invention, the air duct component includes a first volute portion and a second volute portion, the first volute portion and the second volute portion are disposed opposite to each other on a cross section perpendicular to an axis of the cross-flow wind wheel, so as to define a cross-flow air duct between the first volute portion and the second volute portion, the cross-flow air duct includes a middle air duct section and two end air duct sections respectively located at two ends of the middle air duct section along an axial direction of the cross-flow wind wheel, the inner end of the first volute portion has a volute tongue, on the cross section, the volute tongue is perpendicular to the second volute portion, a portion of the middle air duct section located downstream of the perpendicular line is a middle air outlet duct, a portion of the end air duct section located downstream of the perpendicular line is an end air outlet duct, the cross-sectional area of the middle air outlet duct is S1, the cross-sectional area of the end air outlet duct is S2, and S1 is smaller than S2.

According to the utility model discloses a wind channel part for through-flow wind wheel can improve the different sound problem of air-out.

In some embodiments, the length of the cross-flow air channel is W1, the length of the end air channel section is W2, and the length of the end air channel section is W2 and 0.3W1 in the axial direction of the cross-flow wind wheel.

In some embodiments, the part of the volute tongue corresponding to the middle air duct section is a middle volute tongue section, the part of the volute tongue corresponding to the end air duct section is an end volute tongue section, the minimum gap between the middle volute tongue section and the cross-flow wind wheel is T1, the minimum gap between the end volute tongue section and the cross-flow wind wheel is T2, and T2 > T1.

In some embodiments, the diameter of the cross-flow wind wheel is D, T1 is more than or equal to 0.04D and less than or equal to 0.06D, and T2 is more than or equal to 0.04D and less than or equal to 0.06D.

In some embodiments, the first volute portion includes a first straight line segment, the volute tongue is connected to an inner end of the first straight line segment, a portion of the first straight line segment corresponding to the intermediate air duct segment is a first intermediate straight line segment, a portion of the first straight line segment corresponding to the end air duct segment is a first end straight line segment, and an outer end of the first end straight line segment is located on a side, close to the second volute portion, of the outer end of the first intermediate straight line segment.

In some embodiments, on a cross section perpendicular to the axis of the cross-flow wind wheel, the inner end of the first end straight line segment is coincident with the inner end of the first middle straight line segment, and the included angle between the first end straight line segment and the first middle straight line segment is alpha 1, and is more than or equal to 3 degrees and less than or equal to alpha 1 and less than or equal to 7 degrees.

In some embodiments, the portion of the inner end of the second volute section corresponding to the intermediate air duct section is an intermediate inner end section, the portion of the inner end of the second volute section corresponding to the end air duct section is an end inner end section, the minimum gap between the intermediate inner end section and the cross-flow wind wheel is T3, the minimum gap between the end inner end section and the cross-flow wind wheel is T4, and T4 > T3.

In some embodiments, the diameter of the cross-flow wind wheel is D, T3 is more than or equal to 0.04D and less than or equal to 0.06D, and T4 is more than or equal to 0.04D and less than or equal to 0.06D.

In some embodiments, the second volute portion comprises a second straight line segment, a portion of the second straight line segment corresponding to the intermediate air duct segment is a second intermediate straight line segment, a portion of the second straight line segment corresponding to the end air duct segment is a second end straight line segment, and an outer end of the second end straight line segment is located on a side, close to the first volute portion, of the outer end of the second intermediate straight line segment.

In some embodiments, on a cross section perpendicular to the axis of the cross-flow wind wheel, the inner end of the second end straight line segment is coincident with the inner end of the second middle straight line segment, and the included angle between the second end straight line segment and the second middle straight line segment is alpha 2, and is more than or equal to 3 degrees and less than or equal to alpha 2 and less than or equal to 7 degrees.

In some embodiments, the portion of the second volute portion corresponding to the intermediate air duct section is a second intermediate volute section, the portion of the second volute portion corresponding to the end air duct section is a second end volute section, and the second end volute section is deflected by an angle α 3 around the central axis of the cross-flow wind wheel and towards a direction close to the first volute section relative to the second intermediate volute section on a cross section perpendicular to the axis of the cross-flow wind wheel, wherein the angle α 3 is greater than or equal to 3 ° and less than or equal to 7 °.

In some embodiments, a portion of the first volute portion corresponding to the intermediate air duct section is a first intermediate volute section, a portion of the first volute portion corresponding to the end air duct section is a first end volute section, a portion of the second volute portion corresponding to the intermediate air duct section is a second intermediate volute section, a portion of the second volute portion corresponding to the end air duct section is a second end volute section, an included angle between the first intermediate volute section and the second intermediate volute section is α 4, an included angle between the first end volute section and the second end volute section is α 5, and α 5 < α 4 on a cross section perpendicular to an axis of the cross-flow wind turbine.

In some embodiments, 3 ≦ α 5- α 4 ≦ 7.

In some embodiments, 3 ≦ α 4 ≦ 20 °, 3 ≦ α 5 ≦ 20 °.

In some embodiments, on a cross section perpendicular to the axis of the cross-flow wind wheel, the length of the perpendicular line is H, the diameter of the cross-flow wind wheel is D, and H is more than or equal to 0.45D and less than or equal to 0.65D.

According to the utility model discloses air conditioning equipment of second aspect embodiment, include the cross-flow wind wheel and according to the utility model discloses a wind channel part for cross-flow wind wheel of first aspect embodiment, the cross-flow wind wheel is located the cross-flow wind channel.

According to the utility model discloses air conditioning equipment, through setting up the wind channel part that is used for through-flow wind wheel of above-mentioned first aspect embodiment to air conditioning equipment's the different sound problem of air-out has been improved.

In some embodiments, the air conditioning equipment is a mobile air conditioner and comprises a heat exchanger, the heat exchanger is arranged at the rear side of the cross-flow wind wheel, the cross-flow wind wheel is arranged at the inlet of the cross-flow air duct, the second volute part is arranged at the front side of the first volute part, the heat exchanger comprises a first heat exchanging part extending along the vertical direction, the horizontal distance between the axis of the cross-flow wind wheel and the rear surface of the first heat exchanging part is L1, the maximum horizontal distance between the rear surface of the second volute part and the axis of the cross-flow wind wheel is L2, the diameter of the cross-flow wind wheel is D, wherein L1 is more than or equal to 0.7D, and/or L2 is more than or equal to 0.65D.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic cross-sectional view of an air conditioning apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a cross-flow wind wheel and wind tunnel component in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic cross-sectional view of an air conditioning apparatus according to another embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of an air conditioning apparatus according to another embodiment of the present invention;

fig. 7 is a schematic cross-sectional view of an air conditioning apparatus according to another embodiment of the present invention;

fig. 8 is a schematic cross-sectional view of an air conditioning apparatus according to another embodiment of the present invention;

fig. 9 is a schematic cross-sectional view of an air conditioning apparatus according to another embodiment of the present invention.

Reference numerals:

the air conditioning apparatus 100;

a cross flow wind wheel 10;

an air duct member 20;

a first volute portion 21; a first intermediate volute section 21 a; a first end volute section 21 b;

a volute tongue 211; a middle volute tongue segment 211 a; an end volute tongue section 211 b;

a first straight line segment 212; a first intermediate straight line segment 212 a; first end straight segments 212 b;

a second volute section 22; a second intermediate volute section 22 a; a second end volute section 22 b;

the medial inner end section 22a 1; the end inner end section 22b 1;

a second straight line segment 221; a second intermediate straight line segment 221 a; a second end straight segment 221 b;

a cross-flow duct 23; a throat portion 23 a; an air inlet 23 b; an air outlet 23 c;

an intermediate duct section 231; the intermediate air outlet duct 231 a;

an end tunnel segment 232; an end air outlet duct 232 a;

a heat exchanger 30; a first heat exchanging portion 31; a second heat exchanging portion 32.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Next, with reference to the drawings, an air duct member 20 for a cross-flow wind wheel 10 according to an embodiment of the first aspect of the present invention is described.

As shown in fig. 1, the air duct component 20 includes a first volute portion 21 and a second volute portion 22 which are oppositely disposed, and in a cross section perpendicular to an axis of the cross-flow wind wheel 10 (for example, in the cross section shown in fig. 1), the first volute portion 21 and the second volute portion 22 are oppositely disposed to define a cross-flow air duct 23 between the first volute portion 21 and the second volute portion 22, and in conjunction with fig. 2, along an axial direction of the cross-flow wind wheel 10, the cross-flow air duct 23 includes an intermediate air duct section 231 and two end air duct sections 232 respectively located at two ends of the intermediate air duct section 231.

For example, in the example shown in fig. 2, when the axial direction of cross-flow wind wheel 10 is the left-right direction, cross-flow wind tunnel 23 includes middle wind tunnel segment 231 located in the middle (the region between line M1 and line M2 shown in fig. 2), end wind tunnel segment 232 located on the left side of middle wind tunnel segment 231 (the region on the left side of line M1 shown in fig. 2), and end wind tunnel segment 232 located on the right side of middle wind tunnel segment 231 (the region on the right side of line M2 shown in fig. 2).

As shown in fig. 1, the inner end of the first volute part 21 has a volute tongue 211, and it should be noted that "inner" refers to a side close to the air inlet 23b of the cross-flow air duct 23, and "outer" refers to a side close to the air outlet 23c of the cross-flow wind wheel 10. In the above cross section, a perpendicular line L is drawn from the volute tongue 211 to the second volute section 22, and it should be noted that the shortest perpendicular line of all perpendicular lines drawn from each point on the volute tongue 211 to the second volute section 22 is the perpendicular line L, or the perpendicular line of the minimum distance from the volute tongue 211 to the second volute section 22 is the perpendicular line L. In addition, it can be understood that the portion of the cross flow air duct 23 at the position of the vertical line L may be referred to as a throat portion 23a of the cross flow air duct 23, and when the cross flow wind wheel 10 works, the airflow enters the cross flow air duct 23 from the air inlet 23b of the cross flow air duct 23, flows through the position of the throat portion 23a of the cross flow air duct 23, and then flows to the air outlet 23c of the cross flow air duct 23.

As shown in fig. 1 and fig. 2, the portion of the middle air duct segment 231 located downstream of the vertical line L is a middle air outlet duct 231a, and the portion of the end air duct segment 232 located downstream of the vertical line L is an end air outlet duct 232a, that is, the air flow enters the cross-flow air duct 23 from the air inlet 23b, a portion of the air flow enters the middle air duct segment 231 of the cross-flow air duct 23, and the other portion of the air flow enters the end air duct segment 232 of the cross-flow air duct 23, wherein the air flow entering the middle air duct segment 231 first flows through the throat 23a and then flows to the middle air outlet duct 231a, and the air flow entering the end air duct segment 232 first flows through the throat 23a and then flows to the end air outlet duct.

As shown in fig. 2-4, the cross-sectional area of the middle outlet duct 231a is S1, and the cross-sectional area of the end outlet duct 232a is S2, S2 < S1. For example, referring to fig. 1, an intermediate air duct section 231 is defined between the first volute section 21 and the second volute section 22, which are all solid line segments, and corresponds to fig. 3, and a cross-sectional area of the intermediate air outlet duct 231a is a shaded area in fig. 3; defined between the first volute section 21 and the second volute section 22 having a broken line segment in fig. 1 is an end air duct segment 232, and corresponding to fig. 4, the hatched area in fig. 4 is the cross-sectional area of the end air outlet duct 232a, since the first volute section 21 having a broken line segment in fig. 1 is located on the side of the first volute section 21 close to the second volute section 22, which is all a solid line segment, it is apparent that S2 < S1.

Therefore, according to the utility model discloses air duct component 20, cross-sectional area S2 through with tip air-out wind channel 232a sets up to be less than middle air-out wind channel 231 a' S cross-sectional area S1, thereby it is great to make the air-out area of the intermediate position department on the length direction (being the axial of through-flow wind wheel 10) of through-flow wind channel 23 great, can match great air-out wind speed, the air-out area of both ends department is less, can match less air-out wind speed, thereby the air load in the whole length within range of through-flow wind channel 23 is basically the same, gas flow is comparatively even, can improve the both ends department in through-flow wind channel 23 effectively and produce the air supply abnormal sound problem.

Some air conditioners in the related art adopt the cross flow wind wheel to match the cross flow air duct, however, in the working process of the cross flow wind wheel, the air in the whole length range of the cross flow air duct flows unevenly, and the problem of air flow noise generated in the cross flow air duct can be caused by the uneven flow. The inventor finds that the length of the cross-flow wind wheel is smaller than that of the cross-flow wind channel and is influenced by the two side wall surfaces of the cross-flow wind channel, the wind speed at the middle position in the length direction of the cross-flow wind channel (namely the axial direction of the cross-flow wind wheel) is larger, and the wind speed near the two side wall surfaces is smaller.

However, as the cross sections of the volute tongue and the volute casing at different length positions in the cross-flow air duct in the related art are the same, the projection curves of all the parts of the cross-flow air duct on the cross section perpendicular to the axis of the cross-flow wind wheel are overlapped, so that the air outlet area of the cross-flow air duct in the whole length direction is the same, the air flow load in the whole length range of the cross-flow air duct is different, the air flow is not uniform, the air flow at two sides is not matched with the air duct load, and the problem of generating discontinuous air flow sound at two sides of the cross-flow air duct and generating air flow noise is caused.

According to the air duct component 20 of the embodiment of the present invention, the cross-sectional area S2 of the end air outlet duct 232a is set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so that the air outlet cross-sections of the through-flow duct 23 in the whole length range are different and are designed to be variable cross-sections, so that the middle air outlet duct 231a with a larger cross-sectional area can be adapted to a larger air outlet speed, and the end air outlet duct 232a with a smaller cross-sectional area can be adapted to a smaller air outlet speed, or, the through-flow duct 23 is set to be a variable cross-sectional structure, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger air speed in the middle and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller air speed at both sides, thereby reducing the discontinuous airflow sound generated on the two sides of the through-flow air duct 23 and improving the problem of airflow noise.

It should be noted that, in the embodiment of the present invention, in order to realize that "the cross-sectional area S2 of the end air outlet duct 232a is smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so that the air outlet cross-section of the cross-flow duct 23 in the whole length range is different and is designed as a variable cross-section", the present invention provides some specific schemes, for example, the first volute section 21 and/or the second volute section 22 is set as a variable cross-section design along the axial direction of the cross-flow wind wheel 10, that is, the first volute section 21 and/or the second volute section 22 can be set as a variable cross-section design along the axial direction of the cross-flow wind wheel 10, and the cross-sectional shapes of the middle and the two ends are different, so that the present invention can adapt to the load change at different positions, and can effectively eliminate.

More specifically, the first volute casing 21 and/or the second volute casing 22 are/is designed to have variable cross sections along the axial direction of the cross-flow wind wheel 10, so that the influence of the end walls at the two sides of the cross-flow wind channel 23 on the wind volume can be adapted, the gas flow of the whole cross-flow wind channel 23 in the whole length direction (namely the axial direction of the cross-flow wind wheel 10) is more uniform, the characteristics of large middle wind speed and small wind speeds at the two sides of the cross-flow wind channel 23 can be adapted, and the noise generated by the nonuniform airflow at the two sides of the cross-flow wind channel 23 is improved. Note that, the variable cross section of the first volute section 21 and the variable cross section of the second volute section 22 may be transited by a smooth curved surface or a stepped surface, and this is not limited here.

In some embodiments of the present invention, as shown in fig. 2, along the axial direction of the cross flow wind wheel 10, the length of the cross flow wind channel 23 is W1, the length of the end wind channel segment 232 is W2, and W2 is not less than 5mm and not more than 0.3W 1. That is, the length W2 of the end air duct section 232 is equal to or less than 0.3 times the axial length of the through-flow air duct 23, and the length W2 of the end air duct section 232 is equal to or greater than 5 mm. Therefore, the air outlet of the middle air duct section 231 can be prevented from being influenced by the large length of the end air duct section 232, and the problem that the sound improving effect of the two sides is not obvious due to the small length of the end air duct section 232 can also be avoided.

However, the present invention is not limited thereto, and the length of the end air duct section 232 may be adjusted according to the actual situation, which is not described herein. In addition, it should be noted that the length of each end air channel segment 232 only needs to meet the value, but the lengths of the two end air channel segments 232 are not required to be consistent, and may be equal or unequal.

In some embodiments of the present invention, as shown in fig. 1, 3 and 4, the portion of the volute tongue 211 corresponding to the middle air duct section 231 is a middle volute tongue section 211a, the portion of the volute tongue 211 corresponding to the end air duct section 232 is an end volute tongue section 211b, the minimum gap between the middle volute tongue section 211a and the cross-flow wind wheel 10 is T1, the minimum gap between the end volute tongue section 211b and the cross-flow wind wheel 10 is T2, and with reference to fig. 1, T2 > T1. It can be understood that the inner end of the first volute section 21 is the volute tongue 211, and the inlet 23b of the through-flow duct 23 is defined between the volute tongue 211 and the inner end of the second volute section 22.

Therefore, the volute tongue 211 is of a variable cross-section structure with a small gap between the middle part and the cross-flow wind wheel 10 and a large gap between the two end parts and the cross-flow wind wheel 10, so that the characteristics of small air volume at two sides and large air volume at the middle of the cross-flow wind channel 23 can be effectively adapted, the air volume uniformity of the cross-flow wind channel 23 in the whole length direction is improved to a certain extent (namely, the air volume is small due to the air flow loss at two sides of the cross-flow wind channel 23, the air inlet resistance at two sides can be reduced by increasing the air inlet gaps at two sides, so that the air inlet volume at two sides is increased), and the noise of the air channel part 20 is. It can be understood that, in the present embodiment, along the axial direction of the cross flow wind wheel 10, the first volute section 21 is of a variable cross section design, and the minimum distance from the volute tongue 211 to the cross flow wind wheel 10, the minimum distance position, the volute tongue 211 angle and the shape may be different at both end positions and the middle position.

In some embodiments of the present invention, as shown in fig. 1, when the diameter of the cross-flow wind wheel 10 is D, T2 is greater than or equal to 0.04D and less than or equal to 0.06D, and T1 is greater than or equal to 0.04D and less than or equal to 0.06D. Therefore, although the minimum distance from the volute tongue 211 to the cross-flow wind wheel 10 is changed, namely, the minimum distance is different at the two ends and the middle part, the minimum distance is between 0.04D and 0.06D, for example, the gap can be 0.04D, 0.045D, 0.05D, 0.055D, 0.06D and the like, so that the performance of the cross-flow air channel 23 can be ensured to be better.

As shown in fig. 1, the first worm casing part 21 includes a first straight line section 212, the worm tongue 211 is connected to an inner end of the first straight line section 212, and with reference to fig. 3 and 4, a portion of the first straight line section 212 corresponding to the intermediate air duct section 231 is a first intermediate straight line section 212a, and a portion of the first straight line section 212 corresponding to the end air duct section 232 is a first end straight line section 212 b. In some embodiments of the present invention, referring to fig. 5, the outer end of the first end straight line segment 212b is located on the side of the outer end of the first intermediate straight line segment 212a that is adjacent to the second volute section 22.

Therefore, the cross-sectional area S2 of the end air outlet duct 232a can be simply and effectively set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger middle wind speed and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller wind speed at two sides, thereby ensuring that the airflow load is basically the same and the airflow flow is uniform in the whole length range of the through-flow duct 23, reducing the discontinuous airflow sound generated at two sides of the through-flow duct 23, and improving the problem of airflow noise.

In some embodiments of the present invention, as shown in fig. 5, on the cross section perpendicular to the axis of the cross-flow wind wheel 10, the inner end of the first end straight-line segment 212b coincides with the inner end of the first middle straight-line segment 212a, and the included angle between the first end straight-line segment 212b and the first middle straight-line segment 212a is α 1, α 1 is greater than or equal to 3 °, or less than or equal to 7 °, for example, α 1 may be 3 °, 4 °, 5 °, 6 °, 7 °, and so on. That is, the first intermediate straight line segment 212a is rotated by α 1 toward the second worm gear 22 with the inner end as the center of rotation, and the first end straight line segment 212b is obtained. It will be appreciated that the first straight line segment 212 of the dashed line in figure 5 represents the first end straight line segment 212b and the first straight line segment 212 of the solid line represents the first intermediate straight line segment 212 a.

Therefore, a difference angle of 3 degrees to 7 degrees is formed between the first end straight line section 212b and the first middle straight line section 212a, so that the cross-sectional area S2 of the end air outlet duct 232a can be simply and effectively set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, the middle air outlet duct 231a with a larger cross-sectional area is matched at a position with a larger middle air speed, and the end air outlet ducts 232a with a smaller cross-sectional area are matched at positions with smaller air speeds at two sides, and thus, the air flow load in the whole length range of the through-flow duct 23 can be basically the same, the air flow is uniform, the discontinuous air flow sound generated at two sides of the through-flow duct 23 is reduced, and the. And the problem that the normal air outlet at two sides is influenced by overlarge difference angle between the first end straight-line section 212b and the first middle straight-line section 212a is avoided.

In some embodiments of the present invention, as shown in fig. 6, the portion of the inner end of the second volute section 22 corresponding to the middle air duct section 231 is a middle inner end section 22a1, the portion of the inner end of the second volute section 22 corresponding to the end air duct section 232 is an end inner end section 22b1, the minimum gap between the middle inner end section 22a1 and the cross-flow wind wheel 10 is T3, the minimum gap between the end inner end section 22b1 and the cross-flow wind wheel 10 is T4, and T4 > T3. It is to be understood that the dashed lines in FIG. 6 represent the intermediate end segment 22a1 and the solid lines represent the end segment 22b 1.

Therefore, by setting the inner end of the second volute section 22 to be a variable cross-section structure with a small gap between the middle part and the cross-flow wind wheel 10 and a large gap between the two end parts and the cross-flow wind wheel 10, the characteristics of small air volume at the two sides and large air volume at the middle of the cross-flow wind channel 23 can be effectively adapted, the air volume uniformity of the cross-flow wind channel 23 in the whole length direction can be improved to a certain extent (namely, the air volume is small due to the air flow loss at the two sides of the cross-flow wind channel 23, the air intake resistance at the two sides can be reduced by increasing the air intake gaps at the two sides, so that the air intake at the two sides is increased), and the noise of the air. It is understood that, in the present embodiment, the second volute section 22 is designed to have a variable cross-section along the axial direction of the cross-flow wind wheel 10, and the minimum distance from the inner end of the second volute section 22 to the cross-flow wind wheel 10, the minimum distance position, and the angle and shape of the second volute section 22 may be different at both end positions and the middle position.

In some embodiments of the present invention, as shown in fig. 6, the diameter of the cross-flow wind wheel 10 is D, T3 is greater than or equal to 0.04D and less than or equal to 0.06D, and T4 is greater than or equal to 0.04D and less than or equal to 0.06D. Thus, although the minimum distance from the inner end of the second volute section 22 to the cross-flow wind wheel 10 varies, i.e. is different between the two ends and the middle, it is consistent with 0.04D-0.06D, for example, the gap may be 0.04D, 0.045D, 0.05D, 0.055D, 0.06D, etc., so as to ensure the better performance of the cross-flow wind channel 23.

In some embodiments of the present invention, as shown in fig. 7, the second worm casing 22 includes a second straight line segment 221, the portion of the second straight line segment 221 corresponding to the middle air duct segment 231 is a second middle straight line segment 221a, the portion of the second straight line segment 221 corresponding to the end air duct segment 232 is a second end straight line segment 221b, and the outer end of the second end straight line segment 221b is located on the side of the outer end of the second middle straight line segment 221a close to the first worm casing 21. Therefore, the cross-sectional area S2 of the end air outlet duct 232a can be simply and effectively set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger middle wind speed and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller wind speed at two sides, thereby ensuring that the airflow load is basically the same and the airflow flow is uniform in the whole length range of the through-flow duct 23, reducing the discontinuous airflow sound generated at two sides of the through-flow duct 23, and improving the problem of airflow noise.

In some embodiments of the present invention, as shown in fig. 7, on the cross section perpendicular to the axis of the cross-flow wind wheel 10, the inner end of the second end straight-line segment 221b coincides with the inner end of the second middle straight-line segment 221a, the included angle between the second end straight-line segment 221b and the second middle straight-line segment 221a is α 2, 3 ° α 2 is greater than or equal to 3 ° and less than or equal to 7 °, for example, α 2 may be 3 °, 4 °, 5 °, 6 ° 7 °, and so on. That is, the second intermediate straight line segment 221a is rotated by α 2 toward the first worm casing 21 with the inner end as the center of rotation, and the second end straight line segment 221b is obtained. It will be appreciated that in figure 7 the solid line represents the second end straight line segment 221b and the dashed line represents the second intermediate straight line segment 221 a.

Therefore, a difference angle of 3-7 degrees is formed between the second end straight line section 221b and the second middle straight line section 221a, so that it can be simply and effectively ensured that the cross-sectional area S2 of the end air outlet duct 232a is set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger middle wind speed and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller wind speed at two sides, and thus it can be ensured that the airflow load is basically the same and the flow of air is uniform in the whole length range of the through-flow duct 23, thereby reducing the discontinuous airflow sound generated at two sides of the through-. And the problem that the normal air outlet at two sides is influenced by overlarge difference angle between the second end straight-line section 221b and the second middle straight-line section 221a is avoided.

In some embodiments of the present invention, as shown in fig. 8, the portion of the second volute section 22 corresponding to the middle air duct section 231 is a second middle volute section 22a, the portion of the second volute section 22 corresponding to the end air duct section 232 is a second end volute section 22b, and on the cross section perpendicular to the axis of the cross-flow wind wheel 10, the second end volute section 22b deflects an angle α 3 around the central axis of the cross-flow wind wheel 10 and toward the direction close to the first volute section 21 relative to the second middle volute section 22a, where α 3 is greater than or equal to 3 °, 4 °, 5 °, 6 °, 7 °, and so on, and α 3 may be 3 °, 4 °, 5 °, 6 °, 7 °, and so on. That is, the second intermediate volute section 22a is rotated by α 3 toward the first volute section 21 around the axis of the turbine 10 as the center of rotation, and the second end volute section 22b is obtained. It will be appreciated that in fig. 8 the solid line represents the second end volute section 22b and the dashed line represents the second intermediate volute section 22 a.

Therefore, a difference angle of 3 degrees to 7 degrees is formed between the second end volute section 22b and the second middle volute section 22a around the axis of the cross-flow wind wheel 10, so that it can be simply and effectively ensured that the cross-sectional area S2 of the end air outlet duct 232a is set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger middle wind speed and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller wind speed at two sides, thus ensuring that the airflow load is basically the same and the flow of air is uniform within the whole length range of the cross-flow duct 23, reducing the discontinuous airflow sound generated at two sides of the cross-flow duct 23, and improving the problem. And the problem that the normal air outlet at two sides is influenced due to the overlarge difference angle between the second end volute section 22b and the second middle volute section 22a is avoided.

In some embodiments of the present invention, as shown in fig. 3, the portion of the first volute section 21 corresponding to the middle air duct section 231 is a first middle volute section 21a, and the portion of the second volute section 22 corresponding to the middle air duct section 231 is a second middle volute section 22a, as shown in fig. 4, the portion of the first volute section 21 corresponding to the end air duct section 232 is a first end volute section 21b, and the portion of the second volute section 22 corresponding to the end air duct section 232 is a second end volute section 22b, and on the cross section perpendicular to the axis of the cross-flow wind wheel 10, with reference to fig. 8, the included angle between the first middle volute section 21a and the second middle volute section 22a is α 4, and the included angle between the first end volute section 21b and the second end volute section 22b is α 5, α 5 < α 4.

It can be understood that, with reference to fig. 3 and 4, the first intermediate casing section 21a includes a first intermediate straight line segment 212a, the first end casing section 21b includes a first end straight line segment 212b, the second intermediate casing section 22a includes a second intermediate straight line segment 221a, the second end casing section 22b includes a second end straight line segment 221b, an included angle α 4 between the first intermediate casing section 21a and the second intermediate casing section 22a is an included angle between the first intermediate straight line segment 212a and the second intermediate straight line segment 221a, and an included angle α 5 between the first end casing section 21b and the second end casing section 22b is an included angle between the first end straight line segment 212b and the second end straight line segment 221 b.

Therefore, the cross-sectional area S2 of the end air outlet duct 232a can be simply and effectively set to be smaller than the cross-sectional area S1 of the middle air outlet duct 231a, so as to match the middle air outlet duct 231a with a larger cross-sectional area at a position with a larger middle wind speed and match the end air outlet duct 232a with a smaller cross-sectional area at a position with a smaller wind speed at two sides, thereby ensuring that the airflow load is basically the same and the airflow flow is uniform in the whole length range of the through-flow duct 23, reducing the discontinuous airflow sound generated at two sides of the through-flow duct 23, and improving the problem of airflow noise.

In some embodiments, 3 ° ≦ α 5- α 4 ≦ 7 °, that is, the included angle between the first volute section 21 and the second volute section 22 has a difference of 3 ° -7 ° between the two ends and the middle, for example, the difference may be 3 °, 4 °, 5 °, 6 °, and 7 °, so that the generation of discontinuous airflow sound at the two sides of the through-flow duct 23 can be reduced, and the problem of airflow noise can be improved. And avoid this difference too big, influence the problem of the normal air-out of both sides air-out.

In some embodiments of the present invention, as shown in fig. 8, α 4 is 3 ° ≦ α 4 ≦ 20 °, α 5 is 3 ° ≦ α 5 ≦ 20 °, e.g., both α 4 and α 5 may be 3 °, 6 °, 9 °, 12 °, 15 °, 20 °, and so on. Thus, although the included angle between the first volute section 21 and the second volute section 22 is different between the two ends and the middle portion, it is conformed to be between 3 ° and 20 °, so that it is possible to ensure the excellent performance of the through-flow duct 23.

In some embodiments of the present invention, as shown in fig. 9, on the cross section perpendicular to the axis of the cross flow wind wheel 10, the length of the perpendicular line L is H, that is, the size from the first volute section 21 to the second volute section 22 at the throat portion 23a of the cross flow wind channel 23 is H, or the minimum size from the first volute section 21 to the second volute section 22 is H, the diameter of the cross flow wind wheel 10 is D, and H is greater than or equal to 0.45D and less than or equal to 0.65D. Therefore, the problem of small air volume caused by too small H can be avoided, and the problem of abnormal sound caused by too large H can also be avoided.

Next, an air conditioning apparatus 100 according to an embodiment of a second aspect of the present invention is described with reference to the drawings.

As shown in fig. 9, according to the embodiment of the present invention, the air conditioning device 100 may include a cross flow wind wheel 10 and an air duct component 20 for the cross flow wind wheel 10 according to any embodiment of the first aspect of the present invention, the cross flow wind wheel 10 is disposed in a cross flow air duct 23. For example, in some embodiments, cross-flow wind wheel 10 may be disposed at air inlet 23b of cross-flow air duct 23.

Therefore, according to the utility model discloses air conditioning equipment 100, cross-sectional area S2 through with tip air-out wind channel 232a sets up to be less than middle air-out wind channel 231 a' S cross-sectional area S1, thereby it is great to make the air-out area of the intermediate position department on the length direction (being the axial of through-flow wind wheel 10) of through-flow wind channel 23, can match great air-out wind speed, the air-out area of both ends department is less, can match less air-out wind speed, thereby the air load in the whole length range in through-flow wind channel 23 is basically the same, gas flow is comparatively even, can improve the both ends department in through-flow wind channel 23 effectively and produce the air supply abnormal sound problem.

It should be noted that the specific type of the air conditioning apparatus 100 according to the embodiment of the present invention is not limited. For example, an air conditioner or an air sterilizer, etc., when the air conditioning apparatus 100 is an air conditioner, the air conditioning apparatus 100 may further include a heat exchanger 30, and the heat exchanger 30 may be disposed upstream and/or downstream of the air duct member 20 so that the air conditioner may adjust the temperature of the air. When the air conditioning apparatus 100 is an air sterilizer, the air conditioning apparatus 100 may further include a sterilizing device, which may be disposed upstream and/or downstream of the air channel member 20 so that the air sterilizer may sterilize, disinfect, etc. air.

In addition, when the air conditioning equipment 100 is an air conditioner, the specific type of the air conditioner is not limited, and the air conditioner may be an air conditioner indoor unit (including a cabinet air conditioner, an on-hook air conditioner, etc.) in a split air conditioner, or a mobile air conditioner or a window air conditioner in an all-in-one machine. Other constructions and operations of the air conditioning apparatus 100 according to the embodiment of the present invention are known to those skilled in the art after the specific type of the air conditioning apparatus 100 is determined, and will not be described in detail herein.

For example, in some embodiments of the present invention, as shown in fig. 9, the air conditioning apparatus 100 is a mobile air conditioner and includes a heat exchanger 30, the heat exchanger 30 is disposed at a rear side of a cross flow wind wheel 10, the cross flow wind wheel 10 is disposed at an inlet of a cross flow wind duct 23, and a second scroll part 22 is disposed at a front side of a first scroll part 21, wherein the heat exchanger 30 includes a first heat exchanging part 31 extending in a vertical direction, a horizontal distance between an axis of the cross flow wind wheel 10 and a rear surface of the first heat exchanging part 31 is L1, a maximum horizontal distance between a rear surface of the second scroll part 22 and an axis of the cross flow wind wheel 10 is L2, that is, a horizontal distance L1 from an outer edge of the heat exchanger 30 to a center of the cross flow wind wheel 10, a maximum horizontal distance L2 from an inner surface of the second scroll part 22 to the center of the cross flow wind wheel 10, and a diameter of the cross flow wind wheel 10 is D.

In some embodiments, 0.7D L1D can avoid the problems of abnormal sound caused by too small L1 and high speed of gas passing through the heat exchanger 30, and the problems of large overall size and increased cost caused by too large L1. In some embodiments, 0.65D L2D, so that the problem of abnormal sound caused by too small L2 and the problem of large overall size and increased cost caused by too large L2 can be avoided.

In order to meet the requirements of cost and appearance, the mobile air conditioner in the related art generally has a small and compact space size, so that the distance from the heat exchanger to the cross-flow wind wheel is small, the air flow speed passing through the heat exchanger is high, whining noise is generated, and the performance advantage of the cross-flow air duct cannot be exerted to the maximum.

And according to the utility model discloses portable air conditioner of above-mentioned embodiment provides a back air inlet, the preceding through-flow wind channel 23 of going up the air-out, through the rational design to through-flow wind channel 23, heat exchanger 30, through-flow wind wheel 10, for example: d is 126mm, L1 is 104.7mm, L2 is 97mm, H is 63mm, and the included angle between the first intermediate volute section 21a and the second intermediate volute section 22a is α 4 is 14.16 °, so that the performance of the cross-flow duct 23 can be greatly improved, the noise in the duct can be improved, and the noise can be reduced by 2-2.5 db under the condition of basically the same air volume compared with the conventional cross-flow duct.

Furthermore, in some embodiments of the present invention, as shown in fig. 9, the heat exchanger 30 may further include a second heat exchanging portion 32, which is located below the first heat exchanging portion 31 and is disposed obliquely, in addition to the first heat exchanging portion 31 disposed vertically, so that the heat exchanging effect may be enhanced, and of course, the heat exchanger 30 may also be in other forms, which are not described herein again.

In the description of the present invention, it should be understood that the terms "lower", "front", "left", "right", "axial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (17)

1. An air duct component for a cross-flow wind wheel is characterized by comprising a first volute part and a second volute part, wherein the first volute part and the second volute part are arranged oppositely on a cross section perpendicular to the axis of the cross-flow wind wheel so as to define a cross-flow air duct between the first volute part and the second volute part, the cross-flow air duct comprises a middle air duct section and two end air duct sections respectively positioned at two ends of the middle air duct section along the axial direction of the cross-flow wind wheel,

the inner end of the first volute part is provided with a volute tongue, a perpendicular line is drawn from the volute tongue to the second volute part on the cross section, the part of the middle air duct section, which is located at the downstream of the perpendicular line, is a middle air outlet duct, the part of the end air duct section, which is located at the downstream of the perpendicular line, is an end air outlet duct, the cross section area of the middle air outlet duct is S1, the cross section area of the end air outlet duct is S2, and S2 is less than S1.

2. The air duct component for the cross-flow wind wheel according to claim 1, wherein the length of the cross-flow air duct is W1, the length of the end air duct section is W2, and the length of the end air duct section is W2 and 0.3W1 in the axial direction of the cross-flow wind wheel.

3. The air duct component for a cross-flow wind wheel according to claim 1, wherein the portion of the volute tongue corresponding to the middle air duct section is a middle volute tongue section, the portion of the volute tongue corresponding to the end air duct section is an end volute tongue section, the minimum gap between the middle volute tongue section and the cross-flow wind wheel is T1, the minimum gap between the end volute tongue section and the cross-flow wind wheel is T2, and T2 > T1.

4. The air duct component for the cross-flow wind wheel according to claim 3, wherein the diameter of the cross-flow wind wheel is D, T1 is more than or equal to 0.04D and less than or equal to 0.06D, and T2 is more than or equal to 0.04D and less than or equal to 0.06D.

5. The air duct component for a once-through air turbine as recited in claim 1, wherein the first volute portion includes a first straight line section, the volute tongue is connected to an inner end of the first straight line section, a portion of the first straight line section corresponding to the intermediate air duct section is a first intermediate straight line section, a portion of the first straight line section corresponding to the end air duct section is a first end straight line section, and an outer end of the first end straight line section is located on a side of an outer end of the first intermediate straight line section, which is close to the second volute portion.

6. The air duct component for the cross-flow wind wheel according to claim 5, characterized in that on a cross section perpendicular to the axis of the cross-flow wind wheel, the inner end of the first end straight line segment coincides with the inner end of the first middle straight line segment, and the included angle between the first end straight line segment and the first middle straight line segment is α 1, and α 1 is greater than or equal to 3 degrees and less than or equal to 7 degrees.

7. The air duct component for a once-through wind turbine according to claim 1, wherein the portion of the inner end of the second volute section corresponding to the middle air duct section is a middle inner end section, the portion of the inner end of the second volute section corresponding to the end air duct section is an end inner end section, the minimum gap between the middle inner end section and the once-through wind turbine is T3, the minimum gap between the end inner end section and the once-through wind turbine is T4, and T4 > T3.

8. The air duct component for the cross-flow wind wheel according to claim 7, wherein the diameter of the cross-flow wind wheel is D, T3 is more than or equal to 0.04D and less than or equal to 0.06D, and T4 is more than or equal to 0.04D and less than or equal to 0.06D.

9. The air duct component for a once-through air wheel according to claim 1, wherein the second volute portion comprises a second straight line segment, a portion of the second straight line segment corresponding to the middle air duct segment is a second middle straight line segment, a portion of the second straight line segment corresponding to the end air duct segment is a second end straight line segment, and an outer end of the second end straight line segment is located on one side, close to the first volute portion, of an outer end of the second middle straight line segment.

10. The air duct component for the cross-flow wind wheel according to claim 9, wherein on a cross section perpendicular to the axis of the cross-flow wind wheel, the inner end of the second end straight line segment coincides with the inner end of the second middle straight line segment, and the included angle between the second end straight line segment and the second middle straight line segment is α 2, and α 2 is greater than or equal to 3 degrees and less than or equal to 7 degrees.

11. The air duct component for a cross-flow wind wheel according to claim 1, wherein the portion of the second volute section corresponding to the middle air duct section is a second middle volute section, the portion of the second volute section corresponding to the end air duct section is a second end volute section, and the second end volute section is deflected by an angle α 3 around the central axis of the cross-flow wind wheel and toward a direction close to the first volute section relative to the second middle volute section on a cross section perpendicular to the axis of the cross-flow wind wheel, wherein α 3 is greater than or equal to 3 ° and less than or equal to 7 °.

12. The wind channel component for a cross-flow wind turbine according to claim 1, wherein the portion of the first volute portion corresponding to the intermediate wind channel section is a first intermediate volute section, the portion of the first volute portion corresponding to the end wind channel section is a first end volute section, the portion of the second volute portion corresponding to the intermediate wind channel section is a second intermediate volute section, the portion of the second volute portion corresponding to the end wind channel section is a second end volute section, and an included angle between the first intermediate volute section and the second intermediate volute section is α 4, and an included angle between the first end volute section and the second end volute section is α 5, α 5 < α 4, in a cross section perpendicular to an axis of the cross-flow wind turbine.

13. The air duct component for a cross-flow wind wheel according to claim 12, wherein 3 ° ≦ α 5- α 4 ≦ 7 °.

14. The air duct component for a cross-flow wind wheel according to claim 12, characterized in that α 4 is 3 ° or more and 20 ° or less, and α 5 is 3 ° or more and 20 ° or less.

15. The air duct component for the cross-flow wind wheel according to any one of claims 1 to 14, wherein on a cross section perpendicular to the axis of the cross-flow wind wheel, the length of the perpendicular line is H, the diameter of the cross-flow wind wheel is D, and H is more than or equal to 0.45D and less than or equal to 0.65D.

16. An air conditioning apparatus, characterized by comprising a cross-flow wind wheel and an air duct component for the cross-flow wind wheel according to any one of claims 1 to 15, the cross-flow wind wheel being provided in the cross-flow air duct.

17. The air conditioning equipment according to claim 16, wherein the air conditioning equipment is a mobile air conditioner and comprises a heat exchanger, the heat exchanger is arranged at the rear side of the cross-flow wind wheel, the cross-flow wind wheel is arranged at the inlet of the cross-flow wind channel, the second volute part is arranged at the front side of the first volute part, the heat exchanger comprises a first heat exchanging part extending along the vertical direction, the horizontal distance between the axis of the cross-flow wind wheel and the rear surface of the first heat exchanging part is L1, the maximum horizontal distance between the rear surface of the second volute part and the axis of the cross-flow wind wheel is L2, the diameter of the cross-flow wind wheel is D, wherein L1 is greater than or equal to 0.7D, and/or L2 is greater than or equal to 0.65D.

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