CN110671746A

CN110671746A - Air duct structure, indoor unit and air conditioner

Info

Publication number: CN110671746A
Application number: CN201911067406.0A
Authority: CN
Inventors: 佟蒙蒙; 成凯; 李振华; 苏玉熙; 黄煜鹏
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-01-10

Abstract

The invention provides an air duct structure, an indoor unit and an air conditioner. The wind channel structure includes the wind channel, and the wind channel has the diffuser section, and the length of diffuser section is L1, and the width in wind channel is L2, wherein, L1: l2 ═ 3.8: 1. The ratio of the length to the width of the diffuser section of the tunnel structure was set to 3.8: 1. The structure of the diffusion section is optimized, so that the size of the diffusion section structure is more reasonable, the noise generated at the diffusion section is effectively reduced, the noise generated by the indoor unit with the air channel structure is effectively reduced, and the use experience of a user is improved.

Description

Air duct structure, indoor unit and air conditioner

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to an air duct structure, an indoor unit and an air conditioner.

Background

Along with the continuous expansion of the application range of air conditioners, users have higher and higher requirements on indoor units, not only have requirements on performance and appearance, but also have higher requirements on noise, comfort and the like. The air outlet structure of the indoor unit of the air conditioner directly influences the air outlet volume of the air conditioner, particularly, the structure of a diffusion section at the air outlet has the largest influence on noise, the structural size of the diffusion section is unreasonable, noise is easy to generate, and the comfort of the indoor unit of the air conditioner is seriously influenced.

Disclosure of Invention

The invention mainly aims to provide an air duct structure, an indoor unit and an air conditioner, and aims to solve the problem of high noise of the indoor unit in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided an air duct structure including: an air duct having a diffuser section with a length of L1, a width of L2, wherein L1: l2 ═ 3.8: 1.

Further, the length of diffuser is 95mm, and the width of wind channel is 25 mm.

Further, the diffuser section has a diffuser angle of 0 °.

According to another aspect of the present invention, an indoor unit is provided, which includes an air duct structure, and the air duct structure is the air duct structure described above.

Further, the indoor unit includes: the shell is provided with an upper air inlet and a lower air inlet; the heat exchanger is arranged in the shell and is positioned between the upper air inlet and the lower air inlet; the fan part is arranged in the shell and is close to the lower air inlet; the flow guiding part is arranged in the shell, is positioned between the heat exchanger and the fan part and is used for integrating air flow entering the shell from the upper air inlet and exchanging heat with the heat exchanger into one air flow, so that the integrated air flow is blown out of the shell through the lower air inlet after passing through the fan part.

Furthermore, the flow guide part is of a convex hull structure, and the length direction of the convex hull structure extends along the axis direction of the fan part.

Furthermore, the shell is provided with a front shell and a rear shell, the first end of the heat exchanger is connected with the front shell, the second end of the heat exchanger is connected with the rear shell, the convex hull structure is connected with the rear shell, and the convex hull structure is convexly arranged towards one side of the front shell.

Further, the indoor unit further includes: the switching mechanism is movably arranged at the upper air inlet and the lower air inlet and is used for changing the sizes of the upper air inlet and the lower air inlet, when the upper air inlet enters air and the lower air outlet exits air, the switching mechanism acts to enable the ratio of the air inlet area of the upper air inlet to the air outlet area of the lower air inlet to be 2:1, or when the lower air inlet enters air and the upper air outlet exits air, the switching mechanism acts to enable the ratio of the air outlet area of the upper air inlet to the air inlet area of the lower air inlet to be 1: 2.

Further, the indoor unit further includes: the water receiving tray is connected with the rear shell, the convex hull structure is connected with the water receiving tray, the water receiving tray is used for collecting condensed water generated by the heat exchanger, and the convex hull structure are integrally formed in an injection molding mode.

Furthermore, the indoor unit is provided with a cooling mode and a heating mode, when the indoor unit is in the cooling mode, air enters from the lower air inlet, and air exits from the upper air inlet, and when the indoor unit is in the heating mode, air enters from the upper air inlet, and air exits from the lower air inlet.

Further, the fan part comprises cross-flow fan blades.

According to another aspect of the present invention, an air conditioner is provided, which includes an indoor unit, and the indoor unit is the indoor unit described above.

By applying the technical scheme of the invention, the ratio of the length to the width of the diffusion section of the air duct structure is set to be 3.8: 1. The structure of the diffusion section is optimized, so that the size of the diffusion section structure is more reasonable, the noise generated at the diffusion section is effectively reduced, the noise generated by the indoor unit with the air channel structure is effectively reduced, and the use experience of a user is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic cross-sectional view of a first embodiment of the indoor unit according to the invention;

figure 2 shows a schematic cross-sectional view of a second embodiment of the indoor unit according to the invention;

figure 3 shows a schematic cross-sectional view of an embodiment of the air guide of the indoor unit according to the invention;

wherein the figures include the following reference numerals:

10. a housing; 11. an air inlet; 12. a lower tuyere; 13. a front panel; 14. a rear panel;

20. a heat exchanger;

30. a fan section;

40. a flow guide part;

50. a water pan;

60. an air duct; 61. and a diffusion section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 to 3, according to an embodiment of the present invention, an air duct structure is provided.

As shown in fig. 1, the air duct structure includes an air duct 60. The air duct 60 has a diffuser section 61, the length of the diffuser section 61 is L1, the width of the air duct 60 is L2, wherein, L1: l2 ═ 3.8: 1.

In the present embodiment, the ratio of the length to the width of the diffuser section of the air duct structure is set to 3.8: 1. The structure of the diffusion section is optimized, so that the size of the diffusion section structure is more reasonable, the noise generated at the diffusion section is effectively reduced, the noise generated by the indoor unit with the air channel structure is effectively reduced, and the use experience of a user is improved. As shown by L1 in fig. 1, the diffuser section 61 is: the side wall of the side opposite to the socket tongue A in the air duct structure, the inner wall surface of the side wall is a planar side plate structure, and the length of the diffusion section 61 is the length from the end part of the side plate structure close to the fan side to the end part of the side plate structure close to the air inlet side. The width of the air duct 60 is, as indicated by L2 in fig. 1, the distance from the inner wall surface of the diffuser section to the side wall provided with the socket tongue a.

Preferably, the diffuser section 61 has a length of 95mm and the air duct 60 has a width of 25 mm. The diffuser section 61 has a diffuser angle of 0 °. That is, the plane of the diffuser section 61 is disposed parallel to the plane of the side wall of the air duct 60 opposite to the diffuser section 61, so that the arrangement can effectively reduce the noise generated by the diffuser section 61.

The air duct structure in the above embodiment may also be used in the technical field of indoor unit equipment, that is, according to another aspect of the present invention, an indoor unit is provided, which includes the air duct structure in the above embodiment. Specifically, the indoor unit includes a case 10, a heat exchanger 20, a fan part 30, and a guide part 40. The housing 10 has an upper tuyere 11 and a lower tuyere 12. The heat exchanger 20 is disposed in the casing 10 between the upper tuyere 11 and the lower tuyere 12. The fan portion 30 is disposed in the casing 10, and the fan portion 30 is disposed near the lower air inlet 12. The flow guiding part 40 is arranged in the casing 10, the flow guiding part 40 is located between the heat exchanger 20 and the fan part 30, and the flow guiding part 40 is used for integrating air flow entering the casing 10 from the upper air inlet 11 and exchanging heat with the heat exchanger 20 into one air flow, so that the integrated air flow is blown out of the casing 10 through the lower air inlet 12 after passing through the fan part 30. The air flow in the indoor unit can be integrated into one air flow and then discharged out of the shell through the fan part, so that the problem that the indoor unit surges is effectively solved, the noise of the indoor unit is effectively reduced, and the use experience of a user is improved.

As shown in fig. 3, the flow guide portion 40 has a convex hull structure, and the length direction of the convex hull structure extends along the axial direction of the fan portion 30. The arrangement can completely integrate the airflow from the upper part of the fan part into one airflow, and then the airflow is blown out of the shell through the fan.

The housing 10 has a front shell 13 and a rear shell 14, a first end of the heat exchanger 20 is connected to the front shell 13, a second end of the heat exchanger 20 is connected to the rear shell 14, and a convex hull structure is connected to the rear shell 14 and is convexly disposed toward the front shell 13. The arrangement enables the air flow integrated by the convex hull structure to flow towards one side of the front shell, and the connection stability of the convex hull structure and the rear shell 14 is improved.

Specifically, as shown in FIG. 1, the curvature radius of the outer surface profile of the convex hull structure is R, wherein R is more than or equal to 35mm and less than or equal to 37 mm. The minimum distance between the convex hull structure and the front shell 13 is L, wherein L is more than or equal to 85mm and less than or equal to 87 mm. The height of the convex hull structure along the vertical direction is H, wherein H is more than or equal to 63mm and less than or equal to 65 mm. The ratio of the area of the cross section of the upper tuyere 11 to the area of the cross section of the lower tuyere 12 was 2: 1. The arrangement can effectively improve the function of integrating the air flow of the convex hull structure, so that the noise generated by the indoor unit is reduced to the minimum.

Further, the indoor unit further includes a water receiving pan 50. A drip pan 50 is connected to the rear housing 14, and a convex hull structure is connected to the drip pan 50, the drip pan 50 being configured to collect condensate water produced by the heat exchanger 20. The arrangement can discharge the condensed water generated by the heat exchanger to the outside of the shell in time, and the safety of the internal components of the indoor unit is improved. Preferably, the convex hull structure is injection molded integrally with the convex hull structure. The arrangement effectively reduces the production cost of the indoor unit, reduces the number of parts of the indoor unit and effectively improves the stability of the indoor unit.

The indoor unit is provided with a cooling mode and a heating mode, when the indoor unit is in the cooling mode, the lower air inlet 12 supplies air, the upper air inlet 11 supplies air, and when the indoor unit is in the heating mode, the upper air inlet 11 supplies air, and the lower air inlet 12 supplies air. Wherein, the fan part 30 includes a cross-flow fan blade. In the embodiment, the width of the upper tuyere 11 is L1, wherein L1 is more than or equal to 132mm and less than or equal to 134mm, and the width of the lower tuyere 12 is L2, wherein L2 is more than or equal to 60mm and less than or equal to 63 mm. The air inlet volume and the air outlet volume of the indoor unit can be effectively improved by the arrangement, and then the performance of the indoor unit is effectively improved.

The air conditioner with the structure solves the problem that the air duct of the wall hanging machine with upper and lower air outlets has surge. The guide structure is additionally arranged above the volute of the air duct, so that two air flows in the air duct are seamlessly fused, the two air flows are prevented from being erected, and surge noise is avoided. Under the condition that the size ratio of the air inlet to the air outlet is 2:1, the radius R35-37mm of the convex arc of the flow guide structure is 63-65 mm, the height is 63-65 mm, and the distance between the arc and the front shell is 85-87 mm, which is the optimal structural dimension.

Because the air inlet of an upper air outlet duct and a lower air outlet duct (an upper cross flow fan and a lower cross flow fan) is twice of the air outlet, the air inlet amount is smaller, the inlet air cannot follow the air outlet amount, in addition, due to the limitation of the air duct, the heat exchanger divides the inlet air into two halves, and finally the two halves are fused above the cross flow fan blade, and if a second air flow passes through the heat exchanger and collides with a first air flow, surging can be generated. The water receiving plate is designed below, when the upper air inlet and the lower air outlet are performed, the flow guide structure plays a great role, and two air flows on two sides of the heat exchanger are seamlessly fused together, so that the problem of surge of the air duct is solved. When the lower air inlet and the upper air outlet are performed, water is not received above the lower air inlet and the heat exchanger is arranged, the air flow from the heat exchanger to the upper through flow is one, and the flow guide structure of the lower air duct basically has no influence on the noise of the upper air outlet. In order to ensure the appearance, the indoor unit is set to be in the same size from top to bottom, in order to solve the surge problem, the area ratio of the air inlet to the air outlet is set to be 2:1, and meanwhile, a flow guide structure is arranged. The air inlet is switched back and forth during upper air outlet and lower air outlet, the switching mechanism is arranged at the air inlet, the ratio of the air inlet to the air outlet is always ensured to be 2:1, the gap between the volute and the front shell is 85mm-87mm when the air is discharged downwards, the radian of the convex hull is R35-37mm, and the height of the convex hull is optimal to be 63mm-65 mm.

According to another embodiment of the present application, the indoor unit further includes a switching mechanism. The switching mechanism is movably arranged at the upper air inlet 11 and the lower air inlet 12, namely, a switching mechanism is arranged at each air inlet position, the switching mechanism is used for changing the sizes of the air inlets of the upper air inlet 11 and the lower air inlet 12, when the upper air inlet 11 supplies air and the lower air inlet 12 discharges air, the switching mechanism acts to enable the ratio of the air inlet area of the upper air inlet 11 to the air outlet area of the lower air inlet 12 to be 2:1, or when the lower air inlet 12 supplies air and the upper air inlet 11 discharges air, the switching mechanism acts to enable the ratio of the air outlet area of the upper air inlet 11 to the air inlet area of the lower air inlet 12 to be 1. The switching mechanism can be a wind shield and a driving motor, and the wind shield is driven by the driving motor to reciprocate at the upper air inlet and the lower air inlet, so that the air outlet area of the upper air inlet and the lower air inlet can be changed. Of course, the air inlet proportion can also be adjusted by arranging the switching mechanism at one air inlet.

The indoor unit with the structure effectively solves the problems that the air output of the indoor unit is small, and the indoor unit is easy to generate surging and gurgling noises. The air conditioner adopting the structure can effectively improve the indoor temperature rise and temperature drop speed. The air duct structure design adopting the structure is adopted. The advantage lies in the angle of control diffusion angle and the length of air outlet and the relation of diffusion section, reaches best air-out effect and travelling comfort, reduces the noise of indoor set, makes the user obtain best experience effect. Through the cooperation of adjusting diffusion angle, diffusion segment length and wind channel air outlet width, diffusion segment length and wind channel width ratio are 3.8 promptly: 1, when the diffusion angle is 0 degree, the high-performance and high-comfort indoor unit air conditioner is realized, the air outlet volume is ensured, and the noise problem is solved.

TABLE 1 relationship between air volume and diffusion angle, rotational statement

The angle of the diffusion angle at the air outlet of the air duct is 0 degree, namely the air outlet is parallel (as shown in figure 1), in the same air duct structure, the smaller the diffusion angle is, the larger the air flow speed is, the maximum working efficiency of the air conditioner is improved, and the comfort is ensured. The diffusion angle of the traditional indoor unit is between 15 degrees and 25 degrees, the air blown out from the air outlet is dispersed, the heating and lifting speed is slow, and the use comfort of consumers is poor. The internal machine in the angle interval is easy to surge during operation and generates gurgling noise, compared with the traditional internal machine, the internal machine has the advantages that the diffuser angle is designed to be 0 degree (the air outlet is in a parallel state), the energy loss during operation is less, the air outlet of the air outlet is concentrated, and the air volume is larger. When the air outlet is in a parallel state, no surge exists, and the problem of gurgling noise is solved. As can be seen from the data (shown in fig. 2), the air volume levels at the respective rotation speeds were compared when the diffuser angle was 0 °.

The traditional indoor unit has surging sound when in operation, as shown in fig. 1, the diffusion section is 95mm in length, the air duct width is 25mm, the ratio of the diffusion section to the air duct width is 3.8:1, and a large number of experimental analyses prove that the ratio of the diffusion section to the air outlet width is 3.8:1 is the optimum condition where wind speed is maximum, there is no surge, and noise is minimal. Through a series of structural settings, can be when guaranteeing the amount of wind, noise reduction by a wide margin to can promote user's use and experience, and then strengthen the market competition of air conditioner

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An air duct structure, comprising:

an air duct (60), the air duct (60) having a diffuser section (61), the length of the diffuser section (61) being L1, the width of the air duct (60) being L2, wherein L1: l2 ═ 3.8: 1.

2. The air duct structure according to claim 1, wherein the diffuser section (61) has a length of 95mm and the air duct (60) has a width of 25 mm.

3. Air duct structure according to claim 1, characterized in that the diffuser section (61) has a diffuser angle of 0 °.

4. An indoor unit comprising an air duct structure, characterized in that the air duct structure is the air duct structure according to any one of claims 1 to 3.

5. The indoor unit according to claim 4, wherein the indoor unit comprises:

a housing (10), the housing (10) having an upper tuyere (11) and a lower tuyere (12);

the heat exchanger (20) is arranged in the shell (10) and is positioned between the upper air opening (11) and the lower air opening (12);

the fan part (30), the fan part (30) is arranged in the shell (10), and the fan part (30) is arranged close to the lower air inlet (12);

flow guide part (40), flow guide part (40) set up in casing (10), flow guide part (40) are located heat exchanger (20) with between fan portion (30), flow guide part (40) are used for following go up wind gap (11) and locate to get into in casing (10) with heat exchanger (20) carry out the air current integration after the heat exchange into one air current, make the air current after the integration process pass through behind fan portion (30) down wind gap (12) blow out outside casing (10).

6. The indoor unit according to claim 5, wherein the air guide portion (40) has a convex hull structure, and a longitudinal direction of the convex hull structure extends in an axial direction of the blower portion (30).

7. Indoor unit according to claim 6, characterized in that the casing (10) has a front shell (13) and a rear shell (14), the first end of the heat exchanger (20) is connected to the front shell (13), the second end of the heat exchanger (20) is connected to the rear shell (14), and the convex hull structure is connected to the rear shell (14), the convex hull structure being convexly arranged towards the side of the front shell (13).

8. The indoor unit according to claim 5, further comprising:

the air inlet device comprises a switching mechanism, the switching mechanism is movably arranged at the upper air inlet (11) and the lower air inlet (12) and is used for changing the sizes of the air inlets of the upper air inlet (11) and the lower air inlet (12), when air enters the upper air inlet (11) and exits from the lower air inlet (12), the switching mechanism acts to enable the ratio of the air inlet area of the upper air inlet (11) to the air outlet area of the lower air inlet (12) to be 2:1, or when air enters the lower air inlet (12) and exits from the upper air inlet (11), the switching mechanism acts to enable the ratio of the air outlet area of the upper air inlet (11) to the air inlet area of the lower air inlet (12) to be 1: 2.

9. The indoor unit according to claim 7, further comprising:

the water receiving tray (50), the water receiving tray (50) with rear shell (14) are connected, the convex hull structure with the water receiving tray (50) are connected, the water receiving tray (50) is used for collecting the comdenstion water that heat exchanger (20) produced, the convex hull structure with the integrative injection moulding of convex hull structure.

10. Indoor unit according to claim 5, characterized in that it has a cooling mode and a heating mode, when the indoor unit is in cooling mode, the lower air inlet (12) is used for air inlet and the upper air inlet (11) is used for air outlet, when the indoor unit is in heating mode, the upper air inlet (11) is used for air inlet and the lower air inlet (12) is used for air outlet.

11. The indoor unit according to claim 5, wherein the fan unit (30) comprises a cross-flow fan blade.

12. An air conditioner comprising an indoor unit, characterized in that the indoor unit is the indoor unit according to any one of claims 1 to 11.