Air duct assembly and air conditioner

Abstract

The air duct assembly is arranged in an indoor unit of the air conditioner, the air duct assembly comprises a cross-flow fan and a heat exchanger, the heat exchanger is arranged around the cross-flow fan, the heat exchanger and the cross-flow fan are spaced to form a heat exchange air duct, and the heat exchanger comprises a plurality of heat exchange sub-parts. The multiple heat exchange sub-parts at least comprise the first heat exchange sub-parts and the second heat exchange sub-parts which are connected in sequence, and the minimum distance between the first heat exchange sub-parts and the cross-flow fan is 0.9-1.1 times of the minimum distance between the second heat exchange sub-parts and the cross-flow fan. In other words, the width difference of the heat exchange air duct sections formed by the first heat exchange part and the second heat exchange part is not large, so that the flow speed is basically not changed when airflow enters the heat exchange air duct section corresponding to the adjacent heat exchange sub-part from the heat exchange air duct section corresponding to one heat exchange sub-part, and the airflow in the heat exchange air duct flows evenly; interference or vortex generation is avoided, and the air outlet volume of the indoor unit is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, and particularly relates to an air duct assembly and an air conditioner. Background Art

[0002] An air conditioner, that is, an air conditioner (Air Conditioner), refers to a device that uses artificial means to adjust and control parameters such as the temperature, humidity, and flow rate of the air in the environment of a building or a structure. Generally, it includes two parts: an indoor unit and an outdoor unit. Among them, the indoor unit includes an indoor heat exchanger and a cross-flow fan. Generally, the indoor heat exchanger is arranged around the cross-flow fan to form a heat exchange air duct. The existing heat exchange air duct has an unreasonable layout, resulting in uneven air flow inside the heat exchange air duct, easy to generate flow field vortices, and low air outlet efficiency of the indoor unit. Content of the Utility Model

[0003] The main purpose of the embodiment of the utility model is to provide an air duct assembly and an air conditioner, aiming to improve the technical problem of uneven air flow inside the heat exchange air duct in the prior art.

[0004] The embodiment of the utility model provides an air duct assembly, which is arranged in the indoor unit of an air conditioner and includes:

[0005] A cross-flow fan;

[0006] A heat exchanger, which is arranged around the cross-flow fan and keeps a distance from the cross-flow fan to form a heat exchange air duct. The heat exchanger includes a plurality of heat exchange sub-components. The plurality of heat exchange sub-components at least include a first heat exchange sub-component and a second heat exchange sub-component connected in sequence. The minimum distance between the first heat exchange sub-component and the cross-flow fan is 0.9 - 1.1 times the minimum distance between the second heat exchange sub-component and the cross-flow fan.

[0007] In some embodiments of the utility model, the plurality of heat exchange sub-components further include a third heat exchange sub-component. The first heat exchange sub-component, the second heat exchange sub-component, and the third heat exchange sub-component are connected in sequence. The first heat exchange sub-component and the second heat exchange sub-component are arranged between the cross-flow fan and the air inlet of the indoor unit. The third heat exchange sub-component is located on one side of the cross-flow fan far from the air inlet. The coverage angle of the first heat exchange sub-component and the coverage angle of the second heat exchange sub-component are both greater than the coverage angle of the third heat exchange sub-component. The coverage angle is the included angle between the two ends of the heat exchange sub-component and the center line of the cross-flow fan.

[0008] In some embodiments of the utility model, the positioning angle of the heat exchanger is greater than or equal to 30° and less than or equal to 60°. The positioning angle is the included angle between the heat exchange sub-component close to the inlet end of the heat exchange air duct and the bottom surface of the indoor unit.

[0009] In some embodiments of the present utility model, the surrounding angle of the heat exchanger is greater than or equal to 150° and less than or equal to 180°, and the surrounding angle is the included angle between the connecting lines of the inlet end of the heat exchange air duct, the outlet end of the heat exchange air duct and the center of the cross-flow fan.

[0010] In some embodiments of the present utility model, the first heat exchange sub-component and the second heat exchange sub-component are connected in sequence, and the first heat exchange sub-component is the heat exchange sub-component close to the inlet end of the heat exchange air duct, and the included angle between the first heat exchange sub-component and the second heat exchange sub-component is greater than or equal to 110° and less than or equal to 140°.

[0011] In some embodiments of the present utility model, the heat exchanger further includes a third heat exchange sub-component, the first heat exchange sub-component, the second heat exchange sub-component and the third heat exchange sub-component are connected in sequence, and the included angle between the second heat exchange sub-component and the third heat exchange sub-component is greater than or equal to 110° and less than or equal to 130°.

[0012] In some embodiments of the present utility model, the heat exchanger further includes a fourth heat exchange sub-component, the first heat exchange sub-component, the second heat exchange sub-component, the third heat exchange sub-component and the fourth heat exchange sub-component are connected in sequence, and the included angle between the third heat exchange sub-component and the fourth heat exchange sub-component is greater than or equal to 110° and less than or equal to 130°.

[0013] In some embodiments of the present utility model, the ratio of the maximum distance between at least two adjacent heat exchange sub-components and the cross-flow fan is 0.9 - 1.1.

[0014] In some embodiments of the present utility model, the maximum width of the heat exchange air duct is 1.0 - 1.2 times the minimum width of the heat exchange air duct.

[0015] In some embodiments of the present utility model, the present utility model further provides an air conditioner, including the above-mentioned air duct assembly.

[0016] An embodiment of the present utility model provides an air duct assembly and an air conditioner. The air duct assembly is disposed in the indoor unit of the air conditioner. The air duct assembly includes a cross-flow fan and a heat exchanger. The heat exchanger is disposed around the cross-flow fan and maintains a gap to form a heat exchange air duct. The heat exchanger includes a plurality of heat exchange sub-components. The plurality of heat exchange sub-components at least include a first heat exchange sub-component and a second heat exchange sub-component connected in sequence. The minimum distance between the first heat exchange sub-component and the cross-flow fan is 0.9 - 1.1 times the minimum distance between the second heat exchange sub-component and the cross-flow fan, that is, the widths of the heat exchange air duct segments formed by the first heat exchange component and the second heat exchange component are not significantly different. Thus, when the air flow enters the heat exchange air duct segment corresponding to an adjacent heat exchange sub-component from the heat exchange air duct segment corresponding to one heat exchange sub-component, the flow velocity basically does not change. Thereby, the air flow in the heat exchange air duct flows evenly, avoiding interference or generation of eddy currents, and ensuring the air volume output of the indoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0018] Figure 1 Structural schematic diagram of an air duct assembly according to an embodiment of the present utility model;

[0019] Figure 2 Air flow velocity distribution diagram of an indoor unit of the prior art;

[0020] Figure 3 Air flow velocity distribution diagram of an indoor unit of the present utility model of some kind.

[0021] Reference numerals: 10, indoor unit; 100, cross-flow fan; 200, heat exchanger; 201, first heat exchange sub-component; 202, second heat exchange sub-component; 203, third heat exchange sub-component; 204, fourth heat exchange sub-component; 300, heat exchange air duct. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0024] In the present utility model, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes Scheme A, Scheme B, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0026] As Figure 1 shown, the present utility model provides an air duct assembly disposed in the indoor unit 10 of an air conditioner. The air duct assembly includes a cross-flow fan 100 and a heat exchanger 200. The heat exchanger 200 is disposed around the cross-flow fan 100 and is spaced apart from the cross-flow fan 100 to form a heat exchange air duct 300. The heat exchanger 200 includes a plurality of heat exchange sub-components, and the plurality of heat exchange sub-components at least include a first heat exchange sub-component 201 and a second heat exchange sub-component 202 connected in sequence. The minimum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 0.9 - 1.1 times the minimum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0027] It should be noted that the minimum distance between the heat exchange sub-component and the cross-flow fan is the shortest distance from the side of a heat exchange sub-component close to the cross-flow fan 100 to the surface of the cross-flow fan 100.

[0028] Generally, the heat exchanger 200 disposed in the indoor unit 10 is composed of multiple plate heat exchange structures. That is, the plate heat exchange structure here is the heat exchange sub-component. Since the cross-flow fan 100 is generally cylindrical, it is difficult to make the distances between different parts of the same heat exchange sub-component and the cross-flow fan 100 consistent. However, because the heat exchange sub-component is generally a plate heat exchange structure and is limited by the space of the indoor unit 10, the difference between the maximum distance and the minimum distance between the same heat exchange sub-component and the cross-flow fan 100 is relatively small.

[0029] It can be understood that by making the ratio of the minimum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 to the minimum distance between the second heat exchange sub-component and the cross-flow fan 100 be 0.9 - 1.1, the widths of the heat exchange air duct segments formed between the first heat exchange sub-component 201, the second heat exchange sub-component 202 and the cross-flow fan are not very different, so that when the air flow enters the heat exchange air duct segment corresponding to the adjacent heat exchange sub-component from the heat exchange air duct segment corresponding to one heat exchange sub-component, the flow velocity basically does not change, so that the air flow in the heat exchange air duct 300 flows evenly, avoiding interference or the generation of eddy currents, and ensuring the air volume of the air outlet of the indoor unit.

[0030] In some embodiments, the minimum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 0.9 times the minimum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0031] In some embodiments, the minimum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 1 times the minimum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0032] In some embodiments, the minimum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 1.1 times the minimum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0033] As shown in the following table, the relationship between the ratio of the minimum distances between two adjacent heat exchange sub-components and the cross-flow fan 100 obtained by the simulation software and the air volume of the air outlet of the indoor unit is shown in the following table:

[0034] Ratio 0.8 0.9 1.0 1.1 1.2 <![CDATA[Air volume m 3 / h]]> 618 643 680 654 610

[0035] Among them, the ratio is the ratio of the minimum distances between two heat exchange sub-components and the cross-flow fan 100, and the air volume is the air volume of the air outlet of the indoor unit.

[0036] In some embodiments, the plurality of heat exchange sub-components further includes a third heat exchange sub-component 203. The first heat exchange sub-component 201, the second heat exchange sub-component 202, and the third heat exchange sub-component 203 are connected in sequence. The first heat exchange sub-component 201 and the second heat exchange sub-component 202 are disposed between the cross-flow fan 100 and the air inlet of the indoor unit 10. The third heat exchange sub-component 203 is located on one side of the cross-flow fan 100 away from the air inlet. The coverage angles of the first heat exchange sub-component 201 and the second heat exchange sub-component 202 are both greater than the coverage angle of the third heat exchange sub-component 203. The coverage angle is the included angle between the two ends of the heat exchange sub-component and the center line of the cross-flow fan 100.

[0037] It can be understood that since the first heat exchange sub-component 201 and the second heat exchange sub-component 202 are closer to the air inlet of the indoor unit 10, the larger the coverage angles of the first heat exchange sub-component 201 and the second heat exchange sub-component 202 are, the greater the coverage of the cross-flow fan 100 is. That is, the heat exchange air duct 300 is basically formed by the cooperation of the first heat exchange sub-component 201, the second heat exchange sub-component 202 and the cross-flow fan 100. And since the minimum distance ratio between the first heat exchange sub-component 201 and the second heat exchange sub-component 202 and the cross-flow fan 100 is 0.9 - 1.1, the heat exchange air duct is basically in a state where the width is similar everywhere, further ensuring the uniformity of the airflow in most areas of the heat exchange air duct and ensuring the air outlet efficiency.

[0038] In some embodiments, the positioning angle of the heat exchanger 200 is greater than or equal to 30° and less than or equal to 60°. The positioning angle is the included angle between the heat exchange sub-component near the inlet end of the heat exchange air duct and the bottom surface of the indoor unit.

[0039] It should be noted that as Figure 1 shown, the positioning angle of the heat exchanger 200 is θ1, which is the heat exchange sub-component forming the inlet end of the heat exchange air duct 300 of the heat exchanger 200. It can be understood that by restricting the positioning angle of the heat exchanger 200, the inclination degree of the heat exchange sub-component can be changed, thereby changing the drainage speed of the condensate water on the heat exchanger 200, and at the same time, the air inlet angle of the heat exchange air duct can also be changed.

[0040] Therefore, it can be understood that the present invention makes the positioning angle of the heat exchanger greater than or equal to 30° and less than or equal to 60°, so that the heat exchanger is more conducive to drainage, and the current positioning angle can make the air inlet angle of the heat exchange air duct conducive to the airflow being sucked into the heat exchange air duct, ensuring the air outlet volume of the air conditioner. Therefore, the present invention can avoid the attenuation of the air volume of the air conditioner and ensure the air outlet volume of the air conditioner.

[0041] In some embodiments, under the condition that other conditions remain unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 30°, the rotational speed of the cross-flow fan 100 is set to 900 rpm (that is, 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 666 m 3 / h. As a comparative example, in conventional technology, the positioning angle of the heat exchanger 200 is set to 25°, the speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the indoor unit outlet is 650m 3 / h.

[0042] In some embodiments, with other conditions unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 40°, the speed of the cross-flow fan 100 is set to 900 rpm (i.e., 900 revolutions per minute), and the air volume at the indoor unit outlet is 701 m 3 / h. As a comparative example, in conventional technology, the positioning angle of the heat exchanger 200 is set to 25°, the speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the indoor unit outlet is 650m 3 / h.

[0043] In some embodiments, with other conditions unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 60°, the speed of the cross-flow fan 100 is set to 900 rpm (i.e., 900 revolutions per minute), and the air volume at the indoor unit outlet is 674 m 3 / h. As a comparative example, in conventional technology, the positioning angle of the heat exchanger 200 is set to 70°, the speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the indoor unit outlet is 630m 3 / h.

[0044] In some embodiments, the enclosing angle of the heat exchanger 200 is greater than or equal to 150° and less than or equal to 180°. The enclosing angle is the angle between the inlet end of the heat exchange duct 300 , the heat exchange duct 300 and the center of the cross-flow fan 100 .

[0045] It should be noted that if Figure 1 As shown, the enveloping angle is θ2, which is the angle between the lines connecting the two ends of the heat exchanger 200 and the crossflow center. It can be understood that the enveloping angle can affect the overall layout of the heat exchange duct 300. A suitable enveloping angle can ensure sufficient air intake and uniform airflow in the heat exchange duct 300, thereby achieving better aerodynamic efficiency.

[0046] It can be understood that by setting the enclosing angle of the heat exchanger 200 to be greater than or equal to 150° and less than or equal to 180°, the heat exchange duct 300 has better aerodynamic efficiency. At the same time, combined with the positioning angle of the above embodiment, the heat exchange duct 300 can have a better air intake volume.

[0047] In some embodiments, with other conditions unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 40°, the surrounding angle θ2 is 150°, the rotational speed of the cross-flow fan 100 is set to 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 712 m 3 / h. As a comparative example, in the conventional technology, the surrounding angle of the heat exchanger 200 is set to 140°, the positioning angle is set to 25°, the rotational speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 643 m 3 / h.

[0048] In some embodiments, with other conditions unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 40°, the surrounding angle θ2 is 165°, the rotational speed of the cross-flow fan 100 is set to 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 722 m 3 / h. As a comparative example, in the conventional technology, the surrounding angle of the heat exchanger 200 is set to 140°, the positioning angle is set to 25°, the rotational speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 643 m 3 / h.

[0049] In some embodiments, with other conditions unchanged, the positioning angle θ1 of the heat exchanger 200 is set to 40°, the surrounding angle θ2 is 180°, the rotational speed of the cross-flow fan 100 is set to 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 705 m 3 / h. As a comparative example, in the conventional technology, the surrounding angle of the heat exchanger 200 is set to 190°, the positioning angle is set to 25°, the rotational speed of the cross-flow fan 100 is 900 rpm (i.e., 900 revolutions per minute), and the air volume at the air outlet of the indoor unit is 653 m 3 / h.

[0050] In some embodiments, the plurality of heat exchange sub-components at least includes a first heat exchange sub-component 201 and a second heat exchange sub-component 202. The first heat exchange sub-component 201 and the second heat exchange sub-component 202 are connected in sequence, and the first heat exchange sub-component 201 is the heat exchange sub-component close to the inlet end of the heat exchange air duct. The included angle between the first heat exchange sub-component 201 and the second heat exchange sub-component 202 is greater than or equal to 110° and less than or equal to 140°.

[0051] It can be understood that, as Figure 1As shown, the included angle between the first heat exchange element 201 and the second heat exchange element 202 is α1. Since the first heat exchange element 201 is close to the inlet of the heat exchange air duct 300, the air flow velocity of the corresponding part of the heat exchange air duct 300 between the first heat exchange element 201 and the second heat exchange element 202 is relatively fast. Therefore, restricting the included angle between the first heat exchange element 201 and the second heat exchange element 202 within a suitable range can avoid the occurrence of eddy currents at the junction of the two, ensuring the air outlet efficiency of the cross-flow fan 100. At the same time, restricting the included angle between the first heat exchange element 201 and the second heat exchange element 202 within a suitable range can also adjust the inclination degree of the first heat exchange element 201, thereby ensuring the drainage efficiency of the first heat exchange element 201.

[0052] It can be understood that when the included angle between the first heat exchange element 201 and the second heat exchange element 202 is greater than or equal to 110° and less than or equal to 140°, the air outlet efficiency of the cross-flow fan 100 can be ensured, while ensuring smooth drainage of the first heat exchange element 201 and ensuring the air volume of the indoor unit's air outlet.

[0053] In some embodiments, the included angle between the first heat exchange element 201 and the second heat exchange element 202 is equal to 110°.

[0054] In some embodiments, the included angle between the first heat exchange element ²⁰¹ and the second heat exchange element ²⁰² is equal to 120°.

[0055] In some embodiments, the included angle between the first heat exchange element 201 and the second heat exchange element 202 is equal to 140°.

[0056] In some embodiments, the heat exchanger 200 further includes a third heat exchange element 203, and the included angle between the second heat exchange element 202 and the third heat exchange element 203 is greater than or equal to 110° and less than or equal to 130°.

[0057] It can be understood that, as Figure 1 shown, the included angle between the second heat exchange element 202 and the third heat exchange element 203 is β1. The second heat exchange element 202 and the third heat exchange element 203 are structurally adjacent, so the included angle β1 between the two can affect the air flow state near the two.

[0058] Therefore, it can be understood that by making the included angle between the second heat exchange element 202 and the third heat exchange element 203 greater than or equal to 110° and less than or equal to 130°, the interference of the air flow passing through the two can be avoided, thereby ensuring the air flow uniformity at this part of the heat exchange air duct and ensuring the air outlet efficiency of the cross-flow fan.

[0059] In some embodiments, the included angle between the second heat exchange element 202 and the third heat exchange element 203 is equal to 110°.

[0060] In some embodiments, the included angle between the second heat exchange sub-component 202 and the third heat exchange sub-component 203 is equal to 120°.

[0061] In some embodiments, the included angle between the second heat exchange sub-component 202 and the third heat exchange sub-component 203 is equal to 130°.

[0062] In some embodiments, the heat exchanger 200 further includes a fourth heat exchange sub-component 204. The first heat exchange sub-component 201, the second heat exchange sub-component 202, the third heat exchange sub-component 203, and the fourth heat exchange sub-component 204 are connected in sequence. The included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is greater than or equal to 110° and less than or equal to 130°.

[0063] It can be understood that, as Figure 1 shown, the included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is γ1. It can be understood that the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 are structurally adjacent, so the included angle β1 between the two can affect the air flow state near them.

[0064] Therefore, it can be understood that by setting the included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 to be greater than or equal to 110° and less than or equal to 130°, it is possible to avoid interference of the air flow passing through the two, thereby ensuring the air flow uniformity at this location of the heat exchange air duct and ensuring the air outlet efficiency of the cross-flow fan.

[0065] In some embodiments, the included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is equal to 110°.

[0066] In some embodiments, the included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is equal to 120°.

[0067] In some embodiments, the included angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is equal to 130°.

[0068] In some embodiments, the length of the fourth heat exchange sub-component 204 is respectively less than the lengths of the first heat exchange sub-component 201, the second heat exchange sub-component 202, and the third heat exchange sub-component 203.

[0069] In some embodiments, the minimum distances between at least two adjacent heat exchange sub-components and the cross-flow fan are the same.

[0070] That is, compared with the foregoing embodiments that allow a difference in the minimum distance between two adjacent heat exchange sub-components and the cross-flow fan, in this embodiment, the minimum distance between the two heat exchanges and the cross-flow fan is further defined to be the same. That is, by limiting the difference in the minimum distance between two adjacent heat exchange sub-components and the cross-flow fan, the widths of the heat exchange air duct segments corresponding to the two adjacent heat exchange sub-components are made nearly the same, thereby ensuring the uniformity of the air flow in the corresponding heat exchange air duct segments, avoiding interference or the generation of eddy currents, and ensuring the air volume of the indoor unit's air outlet.

[0071] In some embodiments, the ratio of the maximum distance between at least two adjacent heat exchange sub-components and the cross-flow fan 100 is 0.9 - 1.1.

[0072] The maximum distance between the heat exchange sub-component and the cross-flow fan is the longest distance from one side of the heat exchange sub-component close to the cross-flow fan 100 to the surface of the cross-flow fan 100.

[0073] Specifically, referring to the foregoing multiple embodiments, the maximum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 0.9 - 1.1 times the maximum distance between the second heat exchange sub-component 202 and the cross-flow fan 100. Or the maximum distance between the second heat exchange sub-component 202 and the cross-flow fan 100 is 0.9 - 1.1 times the maximum distance between the third heat exchange sub-component 203 and the cross-flow fan 100.

[0074] It can be understood that by making the ratio of the maximum distance between at least two adjacent heat exchange sub-components and the cross-flow fan be 0.9 - 1.1, the widths of the heat exchange air duct segments formed between two adjacent heat exchanges are made not very different, so that the air flow velocity basically does not change when the air flow enters the heat exchange air duct segment corresponding to the adjacent heat exchange sub-component from the heat exchange air duct segment corresponding to one heat exchange sub-component, so that the air flow in the heat exchange air duct 300 flows evenly, avoiding interference or the generation of eddy currents, and ensuring the air volume of the indoor unit's air outlet.

[0075] In some embodiments, the maximum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 0.9 times the maximum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0076] In some embodiments, the maximum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 1 times the maximum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0077] In some embodiments, the maximum distance between the first heat exchange sub-component 201 and the cross-flow fan 100 is 1.1 times the maximum distance between the second heat exchange sub-component 202 and the cross-flow fan 100.

[0078] In some embodiments, the maximum width of the heat exchange air duct 300 is 1.0 - 1.2 times the minimum width of the heat exchange air duct 300.

[0079] It should be noted that the heat exchange duct 300 is formed by the cooperation of the heat exchanger 200 and the cross-flow fan 100. That is, the maximum width of the heat exchange duct 300 is the maximum distance between the heat exchanger 200 and the cross-flow fan 100, and the minimum width of the heat exchange duct 300 is the minimum distance between the heat exchanger 200 and the cross-flow fan 100. The maximum distance between the heat exchanger 200 and the cross-flow fan 100 is the maximum value among the maximum distances between the multiple heat exchange components and the cross-flow fan 100, and the minimum distance between the heat exchanger 200 and the cross-flow fan 100 is the minimum value among the minimum distances between the multiple heat exchange components and the cross-flow fan 100.

[0080] Therefore, it can be understood that, through the above-mentioned setting, the maximum width of the heat exchange duct 300 is close to the minimum width, so that the overall width change of the heat exchange duct 300 approaches 0, and the wind speed flow at various parts of the heat exchange duct 300 is close, so that the air flow in the duct is relatively uniform, avoiding the generation of internal vortexes, and improving the air outlet efficiency of the indoor unit 10.

[0081] In some embodiments, the maximum width of the heat exchange air duct 300 is 1.0 times the minimum width of the heat exchange air duct 300 .

[0082] In some embodiments, the maximum width of the heat exchange air duct 300 is 1.1 times the minimum width of the heat exchange air duct 300 .

[0083] In some embodiments, the maximum width of the heat exchange air duct 300 is 1.2 times the minimum width of the heat exchange air duct 300 .

[0084] In some embodiments, a duct assembly is provided in an indoor unit 10 of an air conditioner. The duct assembly includes a cross-flow fan 100 and a heat exchanger 200. The heat exchanger 200 is disposed around the cross-flow fan 100 and is spaced apart from the cross-flow fan 100 to form a heat exchange duct 300. The positioning angle of the heat exchanger 200 is greater than or equal to 30° and less than or equal to 60°. The surrounding angle of the heat exchanger 200 is greater than or equal to 150° and less than or equal to 180°.

[0085] The heat exchanger 200 includes a first heat exchange sub-component 201, a second heat exchange sub-component 202, a third heat exchange sub-component 203, and a fourth heat exchange sub-component 204. The angle between the first heat exchange sub-component 201 and the second heat exchange sub-component 202 is greater than or equal to 110° and less than or equal to 140°, the angle between the second heat exchange sub-component 202 and the third heat exchange sub-component 203 is greater than or equal to 110° and less than or equal to 130°, and the angle between the third heat exchange sub-component 203 and the fourth heat exchange sub-component 204 is greater than or equal to 110° and less than or equal to 130°.

[0086] The minimum distance between the first heat exchange component 201 and the cross-flow fan 100 is 0.9 - 1.1 times the minimum distance between the second heat exchange component 202 and the cross-flow fan 100. The minimum distance between the second heat exchange component 202 and the cross-flow fan 100 is 0.9 - 1.1 times the minimum distance between the third heat exchange component 203 and the cross-flow fan 100. The minimum distance between the first heat exchange component 201 and the cross-flow fan 100 is 0.9 - 1.1 times the minimum distance between the third heat exchange component 203 and the cross-flow fan 100.

[0087] As Figures 2 - 3 shown, Figure 2 Figure 7 is the air flow velocity distribution diagram of an existing indoor unit. Figure 3 Figure 8 is the air flow velocity distribution diagram of the indoor unit with this air duct assembly. According to Figure 2 and Figure 3 it can be seen that, compared with the existing technical solution, the air duct assembly of the present utility model significantly increases the air intake volume.

[0088] As shown in the following table, the performance data of the indoor unit with this air duct assembly and a conventional indoor unit obtained through simulation software are as follows:

[0089]

[0090] According to the above table, it can be known that the indoor unit adopting this solution can increase the air output volume by 5% at the same rotation speed and reduce the power of the indoor unit by a certain amount, that is, the performance is improved and the energy consumption is reduced.

[0091] Furthermore, as shown in the following table, the air output volume - efficiency - noise test data of the indoor unit with this air duct assembly and the conventional indoor unit in the prior art obtained through simulation software are as follows:

[0092]

[0093]

[0094] Regarding the differences in the above table, the larger the difference, the better the fan sound perception is recognized by the industry. According to the above data, it can be known that the indoor unit using this solution has a better sound perception and is basically quieter at the same rotation speed.

[0095] Therefore, adopting the air duct assembly of the above embodiment can reduce the power of the indoor unit to a certain extent, while making the air volume larger and the sound perception better.

[0096] In some embodiments, the present utility model further provides an air conditioner, including the air duct assembly in the above embodiment. Since this air conditioner includes the air duct assembly of the above embodiment or combined embodiments, it at least has some or all of the beneficial effects of the above air duct assembly, which will not be elaborated here one by one.

[0097] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the application concept of the present utility model, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present utility model.

Claims

1. An air duct assembly, provided in an indoor unit of an air conditioner, characterized in that: The air duct assembly includes: Crossflow fan; A heat exchanger is arranged around the cross-flow fan and is spaced apart from the cross-flow fan to form a heat exchange air duct. The heat exchanger includes a plurality of heat exchange sub-components, and the plurality of heat exchange sub-components include at least a first heat exchange sub-component and a second heat exchange sub-component connected in sequence. The minimum spacing between the first heat exchange sub-component and the cross-flow fan is 0.9-1.1 times the minimum spacing between the second heat exchange sub-component and the cross-flow fan.

2. The air duct assembly according to claim 1, characterized in that: The multiple heat exchange sub-components also include a third heat exchange sub-component. The first heat exchange sub-component, the second heat exchange sub-component and the third heat exchange sub-component are connected in sequence. The first heat exchange sub-component and the second heat exchange sub-component are arranged between the cross-flow fan and the air inlet of the indoor unit. The third heat exchange sub-component is located on the side of the cross-flow fan away from the air inlet. The coverage angle of the first heat exchange sub-component and the coverage angle of the second heat exchange sub-component are both greater than the coverage angle of the third heat exchange sub-component. The coverage angle is the angle between the two ends of the heat exchange sub-component and the center of the cross-flow fan.

3. The air duct assembly according to claim 1, characterized in that: The positioning angle of the heat exchanger is greater than or equal to 30° and less than or equal to 60°, and the positioning angle is the angle between the heat exchange sub-component close to the inlet end of the heat exchange air duct and the bottom surface of the indoor unit.

4. The air duct assembly according to claim 1, characterized in that: The enclosing angle of the heat exchanger is greater than or equal to 150° and less than or equal to 180°, and the enclosing angle is the angle between the inlet end of the heat exchange air duct, the outlet end of the heat exchange air duct and the center of the cross-flow fan.

5. The air duct assembly according to claim 1, characterized in that: The first heat exchange sub-component is the heat exchange sub-component close to the inlet end of the heat exchange air duct, and the angle between the first heat exchange sub-component and the second heat exchange sub-component is greater than or equal to 110° and less than or equal to 140°.

6. The air duct assembly according to claim 5, characterized in that: The heat exchanger also includes a third heat exchange sub-component. The first heat exchange sub-component, the second heat exchange sub-component, and the third heat exchange sub-component are connected in sequence. The angle between the second heat exchange sub-component and the third heat exchange sub-component is greater than or equal to 110° and less than or equal to 130°.

7. The air duct assembly according to claim 6, characterized in that: The heat exchanger also includes a fourth heat exchange sub-component, the first heat exchange sub-component, the second heat exchange sub-component, the third heat exchange sub-component and the fourth heat exchange sub-component are connected in sequence, and the angle between the third heat exchange sub-component and the fourth heat exchange sub-component is greater than or equal to 110° and less than or equal to 130°.

8. The air duct assembly according to claim 1, characterized in that: The ratio of the maximum spacing between at least two adjacent heat exchange sub-components and the cross-flow fan is 0.9-1.

1.

9. The air duct assembly according to claim 1, characterized in that: The maximum width of the heat exchange air duct is 1.0-1.2 times the minimum width of the heat exchange air duct.

10. An air conditioner, characterized in that: The invention comprises the air duct assembly according to any one of claims 1 to 9.

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