Air deflector structure and canopy machine having the same

Abstract

The application provides a guide structure and a patio machine with the same. The guide structure comprises a first guide member. The first guide member is in a ring shape and is used for sleeving a fan blade. The first guide member has a first guide inlet angle on a side close to the fan blade and has a first guide outlet angle on a side away from the fan blade. The angle value of the first guide outlet angle is greater than the angle value of the first guide inlet angle. The technical scheme provided by the application can solve the technical problem of large vortex noise at the outlet of the fan blade of the patio machine in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ceiling machine, in particular to a flow guide structure and a ceiling machine with the same. BACKGROUND

[0002] At present, the ceiling machine, also known as a ceiling air conditioner, is a kind of air conditioner which is installed on the ceiling. The ceiling machine has a long air supply distance, an attractive appearance and does not occupy space, and has been favored by more and more consumers. The working principle of the ceiling machine is that the air flow is rotated by a backward centrifugal fan blade, and then is turned by 90° from the outlet of the fan blade; after flowing through a heat exchanger, the air flow is turned by 90° by an air outlet flow channel and is blown out. Due to the influence of the air outlet mode of the ceiling machine and the damping components such as the heat exchanger and the electric auxiliary heater inside the ceiling machine, the internal flow is complex and there are many vortexes, which affect the aerodynamic performance and noise of the ceiling machine.

[0003] However, since the evaporator is installed at the air outlet end of the centrifugal fan blade, a large air outlet resistance is formed at the air outlet of the ceiling machine, so that the air flow in the space from the air outlet of the centrifugal fan blade to the inlet of the evaporator is chaotic, the backflow between the centrifugal fan blade and the flow guide ring is more serious, and the air flow direction at the air outlet of the centrifugal fan blade is not completely parallel to the air inlet direction of the evaporator. Therefore, in the flow channel from the air outlet of the centrifugal fan blade to the inlet of the evaporator, the flow field is relatively turbulent, many vortexes are generated, the flow loss is large, and a large vortex noise is generated. SUMMARY

[0004] The main purpose of the present application is to provide a flow guide structure and a ceiling machine with the same, so as to solve the technical problem of large vortex noise at the outlet of the fan blade of the ceiling machine in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a flow guide structure is provided, comprising: a first flow guide member, the first flow guide member is in an annular structure, the first flow guide member is used for sleeving on a fan blade, the first flow guide member has a first flow guide inlet angle at a side close to the fan blade, and the first flow guide member has a first flow guide outlet angle at a side away from the fan blade; wherein the angle value of the first flow guide outlet angle is greater than the angle value of the first flow guide inlet angle.

[0006] Further, the first flow guide outlet angle is b, and the first flow guide inlet angle is a; wherein 0

[0007] Further, 0°

[0008] 10°

[0009] Further, the first flow guide member is a plurality of first flow guide members, and the plurality of first flow guide members are arranged at intervals along the axial direction of the fan blade.

[0010] The first guide inlet angle of the plurality of first guide members gradually decreases along the air inlet direction of the fan blade; and / or, the first guide outlet angle of the plurality of first guide members gradually decreases along the air inlet direction of the fan blade.

[0011] Further, the first guide member has an inlet height on the side close to the fan blade, and the inlet height difference between the adjacent two first guide members on the side close to the fan blade;

[0012] Wherein, the inlet height difference gradually increases along the air inlet direction of the fan blade.

[0013] Further, the height of the plurality of first guide members along the air inlet direction of the fan blade is respectively: h n , h2, h1.

[0014] Wherein,

[0015] Further, 20mm < h1 < 80mm; and / or, 120mm < h n < 160mm.

[0016] Further, the guide structure further comprises: a second guide member, the second guide member extends along the axial direction of the fan blade, and the second guide member is connected with the first guide member.

[0017] Further, the second guide member is a plurality of second guide members, and the plurality of second guide members are symmetrically arranged around the rotation axis of the fan blade.

[0018] Further, the second guide member has a second guide inlet angle on the side close to the fan blade, and has a second guide outlet angle on the side away from the fan blade, and the second guide inlet angle is smaller than the second guide outlet angle.

[0019] Further, the second guide member is arranged between the fan blade and the evaporator, and the second guide outlet angle is arranged perpendicularly to the inlet surface of the evaporator.

[0020] Further, the second guide inlet angle is c, and the second guide outlet angle is d; wherein, 35° < c < 55°; and / or, 80° < d < 100°.

[0021] Further, the air inlet of the fan blade is provided with a guide ring, one of the plurality of first guide members is arranged at the outer edge of the guide ring, and the first guide member is arranged around the guide ring, so that the gap between the guide ring and the fan blade is located in the area surrounded by the first guide member.

[0022] Further, the fan blade is installed in the shell; and the guide structure further comprises: a mounting portion connected with the first guide member, at least part of the mounting portion is matched with the mounting structure of the shell, so that the first guide member is installed in the shell through the mounting portion.

[0023] Further, the fan blade is installed in the shell, the shell has a mounting groove, and the flow guide structure further comprises: a plug-in piece arranged at a first flow guide piece located at the outer edge of the flow guide ring among the plurality of first flow guide pieces, the plug-in piece being plugged into the mounting groove.

[0024] Another aspect of the present application provides a patio machine comprising the flow guide structure provided above.

[0025] Further, the patio machine further comprises: a shell comprising a mounting shell and an air outlet frame connected to each other, the air outlet frame being provided with an air inlet and an air outlet; and the flow guide structure is installed on the air outlet frame.

[0026] The technical scheme of the present application can facilitate the formation of pressure expansion air outlet guide, improve the flow guide effect, optimize the air flow state at the outlet of the fan blade, effectively improve the aerodynamic performance at the air outlet of the fan blade, reduce vortex, reduce flow loss, and reduce vortex noise. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the exemplary embodiments of the present application and their description, serve to explain the present application, and do not constitute an improper limitation of the present application. In the drawings:

[0028] Figure 1 A structural schematic view of the flow guide structure provided according to an embodiment of the present application is shown;

[0029] Figure 2 An installation schematic view of the flow guide structure provided according to an embodiment of the present application is shown;

[0030] Figure 3 A structural schematic view of the flow guide structure in one direction provided according to an embodiment of the present application is shown;

[0031] Figure 4 A B-B direction schematic view of the flow guide structure in Figure 3 is shown;

[0032] Figure 5 A C-C direction schematic view of the flow guide structure in Figure 3 is shown;

[0033] Figure 6 A noise comparison chart with and without the flow guide structure is shown;

[0034] Figure 7 A noise comparison chart with and without the flow guide structure is shown.

[0035] In the above drawings, the following reference signs are used:

[0036] 10, first flow guide member;

[0037] 20, fan blade;

[0038] 30, second flow guide member;

[0039] 40, plug-in part;

[0040] 50, housing; 51, mounting shell; 52, air outlet frame; 521, air inlet; 522, air outlet

[0041] 60, flow guide ring;

[0042] 70, evaporator. DETAILED DESCRIPTION

[0043] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0044] As Figures 1 to 5 shown, the embodiment one of the present application provides a flow guide structure, which comprises a first flow guide member 10, the first flow guide member 10 is in a ring structure, the first flow guide member 10 is used for sleeving on a fan blade 20, the first flow guide member 10 has a first flow guide inlet angle on a side close to the fan blade 20, and the first flow guide member 10 has a first flow guide outlet angle on a side away from the fan blade 20. Wherein, the angle value of the first flow guide outlet angle is greater than the angle value of the first flow guide inlet angle.

[0045] With such a structure, it is convenient to form an expansion and outflow guide to improve the flow guide effect on the wind, and it is convenient to optimize the air flow state at the outlet of the fan blade 20. The flow field at the outlet of the fan blade 20 is rectified by the flow guide structure, the aerodynamic performance of the fan blade 20 is effectively improved, the vortex is reduced, the flow loss is reduced, and the vortex noise is reduced. Therefore, through the technical scheme provided by the present application, the technical problem of large vortex noise at the outlet of the fan blade 20 of the existing patio machine can be effectively solved.

[0046] Specifically, the first flow guide inlet angle and the first flow guide outlet angle are as Figure 4 shown.

[0047] Specifically, the fan blade 20 in the embodiment can be a centrifugal fan blade. The first flow guide member 10 can play a flow dividing role on the airflow at the outlet of the fan blade 20, reduce the vortex noise, reduce the flow loss, increase the air volume, and improve the efficiency of the fan.

[0048] In this embodiment, the first guide outlet angle is b, and the first guide inlet angle is a; where 0 < ba < 10°. This structural arrangement facilitates a suitable angular difference between the first guide outlet and the first guide inlet angles, thereby enabling better diffusion guidance, reducing flow losses at that point, and ultimately reducing eddy noise.

[0049] Specifically, 0° < a < 50°, by setting the first guide inlet angle within the above range, it is easy to smoothly introduce the air into the guide inlet position of the first guide member 10, so as to smoothly direct the air at the guide inlet position of the first guide member 10 to the guide outlet position of the first guide member 10.

[0050] In this embodiment, the first guide outlet angle b can be set within the following range: 10° < b < 60°. This structural arrangement facilitates better airflow towards the evaporator 70, and also facilitates guidance towards the air outlet 522 of the air outlet frame 52. This ensures that the air guided by the first guide member 10 can smoothly flow through the evaporator 70 for heat exchange, and also smoothly exit from the air outlet 522 of the air outlet frame 52.

[0051] Specifically, in this embodiment, there are multiple first guide elements 10, which are spaced apart along the axial direction of the fan blade 20. Along the air inlet direction of the fan blade 20, the first guide inlet angle of the multiple first guide elements 10 gradually decreases. This structural arrangement facilitates better guidance of the airflow at the outlet of the fan blade 20, improves the rectification effect, and better reduces eddies.

[0052] In this embodiment, along the air inlet direction of the fan blade 20, the first guide outlet angle of the plurality of first guide elements 10 gradually decreases. This structural arrangement facilitates better guidance of the airflow at the outlet of the fan blade 20, improving the rectification effect and reducing eddies.

[0053] Specifically, the first guide vane 10 has an inlet height on the side near the fan blade 20, and adjacent first guide vanes 10 have an inlet height difference on the side near the fan blade 20. The inlet height difference gradually increases along the airflow direction of the fan blade 20. This facilitates better diffusion guidance, thereby improving the rectification effect.

[0054] In this embodiment, along the air intake direction of the fan blade 20, the heights of the plurality of first guide members 10 are respectively: h n h1, ..., h2, h1; where, This structural layout allows for better optimization of the arrangement of multiple first air guides 10, thereby improving the rectification and airflow effect.

[0055] Specifically, 20mm < h1 < 80mm; and / or, 120mm < h n <160mm.

[0056] In the embodiment, the flow guide structure further comprises a second flow guide 30 extending along the axial direction of the fan blade 20, and the second flow guide 30 is connected with the first flow guide 10. With the arrangement, the flow guide effect on the airflow at the outlet of the fan blade 20 can be achieved, the vortex noise of the ceiling fan can be reduced, the flow loss can be reduced, the air volume can be increased, and the efficiency of the fan can be improved.

[0057] Specifically, the second flow guide 30 in the embodiment is a plurality of second flow guides 30 symmetrically arranged around the rotation axis of the fan blade 20. With the arrangement, the structural arrangement of the plurality of second flow guides 30 can be optimized, and the effect of straightening the airflow can be improved.

[0058] In the embodiment, the second flow guide 30 has a second flow guide inlet angle on the side close to the fan blade 20, and has a second flow guide outlet angle on the side away from the fan blade 20, and the second flow guide inlet angle is smaller than the second flow guide outlet angle. With the arrangement, the flow guide effect can be improved, and the vortex can be better reduced.

[0059] Specifically, the second flow guide 30 is arranged between the fan blade 20 and the evaporator 70, and the second flow guide outlet angle is arranged perpendicularly to the inlet surface of the evaporator 70. In this way, the airflow can be better guided to the evaporator 70, and the flow loss of the airflow from the fan blade 20 into the evaporator 70 can be better reduced.

[0060] In the embodiment, the second flow guide inlet angle is c, and the second flow guide outlet angle is d; wherein, 35° < c < 55°; and / or, 80° < d < 100°.

[0061] Specifically, the fan blade 20 is provided with a flow guide ring 60, one of the plurality of first flow guides 10 is arranged at the outer edge of the flow guide ring 60, and the first flow guide 10 is arranged around the flow guide ring 60, so that the gap between the flow guide ring 60 and the fan blade 20 is located in the area surrounded by the first flow guide 10. With the arrangement, the backflow between the fan blade 20 and the flow guide ring 60 can be limited, the vortex noise can be reduced, the flow loss can be reduced, the air volume can be increased, and the efficiency of the fan can be improved.

[0062] In the embodiment, the fan blade 20 is installed in the shell 50. The guide structure further comprises a mounting portion connected with the first guide member 10, at least a part of the mounting portion is matched with the mounting structure of the shell 50, so that the first guide member 10 is mounted in the shell 50 through the mounting portion. With such a structure, the mounting stability of the first guide member 10 can be improved, so that the guide structure can stably play a guiding role.

[0063] Specifically, the fan blade 20 in the embodiment is installed in the shell 50, the shell 50 has a mounting groove, and the guide structure further comprises a plug-in piece 40 provided at the first guide member 10 located at the outer edge of the guide ring 60 among the plurality of first guide members 10, and the plug-in piece 40 is plugged into the mounting groove. With such a structure, the structure is simple and reliable.

[0064] In the embodiment, the plug-in piece 40 comprises a first plug-in plate and a second plug-in plate, the first plug-in plate and the second plug-in plate are arranged at intervals, and the first plug-in plate and the second plug-in plate are plugged into the mounting groove.

[0065] Specifically, the guide structure in the embodiment is installed between the air outlet of the fan blade 20 and the air inlet of the evaporator 70, which can play a role of rectifying and limiting backflow. The guide device mainly comprises structures such as a transverse guide plate (first guide member 10) and a radial guide plate (second guide member 30).

[0066] As shown in Figure 2 , the guide structure is installed between the air outlet of the fan blade 20 and the air inlet of the evaporator 70 of the ceiling machine, which can rectify the air flow of the fan blade 20 and limit the backflow of the fan blade 20. The guide structure mainly comprises a transverse guide plate (corresponding to the first guide member 10), a radial guide plate (corresponding to the second guide member 30), a column foot, a plug-in piece 40, etc. The transverse guide plate and the radial guide plate play a role of guiding and limiting backflow, the column foot plays a role of supporting and connecting the guide plate, and the plug-in piece 40 plays a role of positioning and fixing. The fan blade 20 can be a centrifugal fan blade structure.

[0067] The number of transverse guide plates is n, the inlet angles of the transverse guide plates from bottom to top are a1, a2, a3, a4, …, a n , the inlet heights are h1, h2, h3, h4, …, h n , the outlet angles are b1, b2, b3, b4, …, b n , and there are

[0068] a1 n , b1 n , b n -an <10, a n ∈(0, 50), b n ∈(10, 60).

[0069] Wherein, the number of radial guide vanes is m, rotationally symmetric around the wind blade 20 rotation axis in four edges, all radial guide vane inlet angles are a m , and the outlet angle is 90° and perpendicular to the evaporator 70 inlet surface, a m ∈(35, 55).

[0070] The guide structure can be designed according to the flow state of the wind blade 20 outflow field, and specific test data are shown in Figure 6 and Figure 7 .

[0071] Embodiment two of the present application provides a patio machine comprising the guide structure provided in the above embodiments.

[0072] In the present embodiment, the patio machine further comprises a shell 50, the shell 50 comprising a mounting shell 51 and an air outlet frame 52 connected to each other, and the air outlet frame 52 is provided with an air inlet 521 and an air outlet 522. Wherein, the guide structure is mounted on the air outlet frame 52. By adopting such a connection mode, the structural layout can be optimized, and the compactness of the internal structure layout is improved.

[0073] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects: after the application of the patio machine guide device, the noise is reduced by 1.5 dB under the same air volume, and the new scheme is more than the original scheme. Under the same air volume, the power of the new scheme is the same as that of the original scheme. The implementation data show that after the guide device described in the present application is applied to the patio machine, the noise of the whole machine is reduced and the air volume is increased, which can effectively straighten the air flow of the wind blade 20, limit the backflow of the air outlet, weaken the vortex, reduce the noise, and improve the motor efficiency.

[0074] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component and / or combination thereof.

[0075] The foregoing description, for purposes of clarity, describes the relative positioning, numeric expressions, and values of the components and steps set forth in the embodiments in terms of their orientation with the application. It will be recognized that the dimensions of the various parts illustrated in the drawings are not necessarily drawn to scale and that, for the purposes of convenience and clarity only, specific spatial orientations are used in the description herein. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as if they were discussed herein to the extent they are relevant. In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings and, as such, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0076] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely used for the purpose of convenience and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0077] For the purpose of convenience and description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0078] In addition, it should be noted that the use of the terms "first", "second", and the like to describe various components does not limit the corresponding components in any way, and the above terms do not have special meanings unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

[0079] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A flow guiding structure, characterized in that, The application relates to a flow guide structure of an air conditioner, comprising: a first flow guide (10) in a ring structure, the first flow guide (10) being arranged on a fan blade (20), the first flow guide (10) having a first flow guide inlet angle on a side close to the fan blade (20), and the first flow guide (10) having a first flow guide outlet angle on a side away from the fan blade (20); wherein the angle value of the first flow guide outlet angle is greater than the angle value of the first flow guide inlet angle; a plurality of the first flow guides (10) are arranged along the axial direction of the fan blade (20); the first flow guide (10) has an inlet height on the side close to the fan blade (20), and adjacent two first flow guides (10) have an inlet height difference on the side close to the fan blade (20); wherein the inlet height difference gradually increases along the air inlet direction of the fan blade (20).

2. The flow guiding structure of claim 1, wherein, The first flow guide outlet angle is b, and the first flow guide inlet angle is a; wherein 0 < b-a < 10°.

3. The flow guide structure according to claim 2, wherein 0° < a < 50°; and / or, 4. The flow guide structure according to claim 1, wherein the first flow guide inlet angle of the plurality of first flow guides (10) gradually decreases along the air inlet direction of the fan blade (20); and / or, 10°＜b＜60°。 6. The flow guide structure according to claim 5, wherein 20mm < h1 < 80mm; and / or, The flow guide structure further comprises: a second flow guide (30) extending along the axial direction of the fan blade (20), and the second flow guide (30) is connected with the first flow guide (10).

5. The flow guide structure of claim 1, wherein, The heights of the plurality of first flow guides (10) along the air inlet direction of the fan blade (20) are respectively h n , h2, h1. wherein . A plurality of the second flow guides (30) are symmetrically arranged around the rotating shaft of the fan blade (20). The second flow guide (30) has a second flow guide inlet angle on the side close to the fan blade (20), and the second flow guide (30) has a second flow guide outlet angle on the side away from the fan blade (20), and the second flow guide inlet angle is smaller than the second flow guide outlet angle. 120 mm < h n < 160 mm.

7. The flow guide structure of claim 1, wherein, The second flow guide (30) is arranged between the fan blade (20) and an evaporator (70), and the second flow guide outlet angle is arranged perpendicularly to the inlet surface of the evaporator (70). The second flow guide inlet angle is c, and the second flow guide outlet angle is d; wherein, 8. The flow guiding structure of claim 7, wherein, 35° < c < 55°; and / or, 9. The flow guiding structure of claim 7, wherein, The fan blade (20) is provided with a flow guide ring (60) at the air inlet, one of the plurality of first flow guides (10) is arranged at the outer edge of the flow guide ring (60), and the first flow guide (10) is arranged around the flow guide ring (60) so that the gap between the flow guide ring (60) and the fan blade (20) is located in the area surrounded by the first flow guide (10).

10. The flow guiding structure of claim 9, wherein, ​ 11. The flow guiding structure of claim 10, wherein, ​ ​ 80°＜d＜100°。 12. The flow guide structure of claim 1, wherein, ​ 13. The flow guiding structure of claim 12, wherein, The fan blade (20) is installed in the shell (50); the flow guide structure further comprises: The mounting portion is connected with the first flow guide piece (10), and at least part of the mounting portion is matched with the mounting structure of the shell (50), so that the first flow guide piece (10) is installed in the shell (50) through the mounting portion.

14. The flow guiding structure of claim 12, wherein, The fan blade (20) is installed in the shell (50), and the shell (50) has a mounting groove; the flow guide structure further comprises: The plug-in part (40) is arranged at the first flow guide piece (10) located at the outer edge of the flow guide ring (60) in the plurality of first flow guide pieces (10), and the plug-in part (40) is plugged into the mounting groove.

15. A ceiling machine characterized by The flow guide structure comprises any one of claims 1 to 14.

16. The patio machine of claim 15, wherein, The canopy machine further comprises: The shell (50) comprises a mounting shell (51) and an air outlet frame (52) connected with each other, and the air outlet frame (52) is provided with an air inlet (521) and an air outlet (522); The flow guide structure is installed on the air outlet frame (52).

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