Flow guide device for air conditioner and air conditioning unit

Abstract

The flow guide device comprises a flow guide cover, the flow guide cover is provided with a flow guide cavity, and the inner diameter of the flow guide cavity is gradually increased in the direction from an air inlet to an air outlet; the flow guide plate assembly comprises a plurality of first flow guide plates and a plurality of second flow guide plates, and the first flow guide plates are located in the flow guide cavity, incline in the first direction and are distributed at the air inlet at intervals; the plurality of second flow guide plates are distributed in the flow guide cavity at intervals in the second direction and are located above the first flow guide plate; the second flow guide plates are evenly divided into two sets, and the two sets of second flow guide plates are obliquely arranged in the opposite directions. The air conditioning unit comprises a heat exchanger, a fan and the flow guide device for the air conditioner. The outlet of the centrifugal fan is communicated with the heat exchanger through the flow guide cover, airflow blown out by the centrifugal fan is evenly blown out through the two layers of flow guide plates in the flow guide cover, the flow equalizing effect is good, and the heat exchange efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning technical field especially relates to a flow guide device and air conditioning unit for air conditioner. BACKGROUND

[0002] Current domestic aircraft ground air conditioning products, generally adopt air-cooled cold air technology, a unit conventional configuration a high pressure centrifugal fan, in the unit operation, utilize high pressure centrifugal fan, will the quantitative air blow through the heat exchanger and give the aircraft cabin corresponding cool air.

[0003] The existing centrifugal fan outlet is usually small, and the finned heat exchanger in the air conditioning unit has a large windward area, which causes the airflow blown by the centrifugal fan to be unable to be evenly blown to the heat exchanger, and the heat exchange efficiency of the heat exchanger is poor. UTILITY MODEL CONTENTS

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a flow guide device and air conditioning unit for air conditioner, the outlet of the centrifugal fan is communicated with the heat exchanger through the flow guide cover, the airflow blown by the centrifugal fan is evenly blown out through the two layers of flow guide plates in the flow guide cover, the flow uniformity effect is good, and the heat exchange efficiency is high.

[0005] The utility model adopts the technical scheme that:

[0006] A flow guide device for air conditioner, comprising:

[0007] A flow guide cover, the flow guide cover has a flow guide cavity, the flow guide cavity has an air inlet and an air outlet, and the inner diameter of the flow guide cavity is arranged to increase along the direction from the air inlet to the air outlet;

[0008] A flow guide plate assembly, the flow guide plate assembly comprises a plurality of first flow guide plates and a plurality of second flow guide plates, the plurality of first flow guide plates are located in the flow guide cavity and are inclined and spaced apart at the air inlet along a first direction; the plurality of second flow guide plates are spaced apart in the flow guide cavity along a second direction and are located above the first flow guide plates; the plurality of second flow guide plates are evenly divided into two groups, and the two groups of second flow guide plates are inclined and arranged towards opposite directions respectively.

[0009] Further, two first fixing members are arranged in the flow guide cavity, the two first fixing members are oppositely arranged and extend along the first direction, and the two ends of the plurality of first flow guide plates are connected with the two first fixing members respectively.

[0010] Further, the first fixing member is provided with a plurality of first clamping grooves, the plurality of first clamping grooves are distributed at intervals on the first fixing member, the inclination directions of the plurality of first clamping grooves are consistent with the inclination directions of the plurality of first flow guide plates, and the plurality of first clamping grooves are used for clamping the first flow guide plates, so that the first flow guide plates are detachably connected with the first fixing member.

[0011] Further, the flow guide cavity is provided with two second fixing members, the two second fixing members are oppositely arranged and extend along a second direction, and the two second fixing members are located above the first flow guide plates.

[0012] Further, the second fixing member is provided with a plurality of second clamping grooves, the plurality of second clamping grooves are distributed at intervals on the second fixing member and are evenly divided into two groups, the inclination directions of the two groups of second clamping grooves are consistent with the inclination directions of the two groups of second flow guide plates, and the two groups of second clamping grooves are used for clamping the second flow guide plates, so that the second flow guide plates are detachably connected with the second fixing member.

[0013] Further, the first flow guide plate and the second flow guide plate are rotationally connected with the first fixing member and the second fixing member respectively and are used for being inclined when rotating.

[0014] Further, the first flow guide plate and the second flow guide plate are respectively provided with connecting rods, the first fixing member and the second fixing member are respectively provided with penetrating holes, and the connecting rods are rotationally and penetratingly arranged in the penetrating holes.

[0015] Further, the flow guide cover comprises a plurality of mounting plates, the plurality of mounting plates are connected with each other and are semi-enclosed to form the flow guide cover.

[0016] Further, the end wall of the air inlet is provided with a plurality of connecting holes, and the connecting holes are used for being connected with the outside.

[0017] An air conditioning unit comprises a heat exchanger, a fan and the flow guide device for air conditioner, the fan is connected with the air inlet of the flow guide cover through an air pipe, and the air outlet of the flow guide cover is communicated with the heat exchanger.

[0018] In summary, the flow guide device for air conditioner and the air conditioning unit have the following technical effects: in specific use, the air outlet of the fan is connected with the air inlet of the flow guide cover, the inner diameter of the flow guide cover is arranged to increase along the direction from the air inlet to the air outlet, so that the air outlet area of the fan is larger, the air outlet area of the fan is expanded, and the airflow can be effectively blown to the air conditioner main body, and the heat exchange effect is improved.

[0019] In addition, since the first guide plate and the second guide plate are arranged in the guide cavity respectively, when the air flow is blown out by the fan, the air flow will change the original flow direction according to the angle of the first guide plate when the air flow impacts on the inclined first guide plate, so that part of the disordered air flow is guided to a specific direction, and when the air flow after the preliminary arrangement of the first guide plate reaches the second guide plate, the second guide plate will further adjust the air flow, since the two groups of second guide plates are oppositely inclined in the second direction, the air flow can be guided from different angles, so that the air flow can be uniformly processed in multiple dimensions, so that the air flow blown out by the fan can be blown to the heat exchanger at a more uniform speed and direction, so that the whole heat exchange surface of the heat exchanger can be fully covered by the air flow, and the heat exchange efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural section view of the utility model;

[0021] Figure 2 is a structural schematic view of another perspective of the utility model;

[0022] Figure 3 is a structural schematic view of another perspective of the utility model;

[0023] Figure 4 is a structural schematic view of the first fixing part in the utility model;

[0024] Figure 5 is a structural schematic view of the second fixing part in the utility model;

[0025] Among them, the meaning of the reference signs is as follows:

[0026] 10, guide cover;11, guide cavity;111, air inlet;112, air outlet;12, connecting hole;20, first guide plate;21, second guide plate;30, first fixing part;31, first clamping groove;40, second fixing part;41, second clamping groove. DETAILED DESCRIPTION

[0027] In order to better understand and implement, the technical scheme in the embodiment of the utility model will be clearly and completely described below by combining the drawings in the embodiment of the utility model.

[0028] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0030] Embodiment 1,

[0031] Referring to Figures 1 to 5 The utility model discloses a kind of air guide devices for air conditioner, comprising: air guide cover 10 and air guide plate assembly, air guide cover 10 has air guide cavity 11, air guide cavity 11 has air inlet 111 and air outlet 112, and the inner diameter of air guide cavity 11 is arranged increasing along the direction of air inlet 111 towards air outlet 112, air guide plate assembly includes multiple first air guide plate 20 and multiple second air guide plate 21, multiple first air guide plate 20 is located air guide cavity 11, and is inclined and spacedly distributed at air inlet 111 along first direction, and multiple second air guide plate 21 is spacedly distributed in air guide cavity 11 along second direction and located above first air guide plate 20, and multiple second air guide plate 21 is evenly divided into two groups, two groups of second air guide plate 21 are respectively inclinedly arranged towards opposite direction.

[0032] On the basis of the above structure, take first direction as the vertical direction of air guide cover 10, second direction as the transverse direction of air guide cover 10 as example to describe, since the inner diameter of air guide cavity 11 is arranged increasing along the direction of air inlet 111 towards air outlet 112, when airflow enters air guide cavity 11 through air inlet 111, there will be a gradually diffusing space, this gradually expanding design can make airflow speed gradually reduce, reduce the dynamic pressure loss of airflow, so that the pressure impact of airflow to air guide cavity 11 wall also reduces, thereby reducing the resistance generated due to high-speed airflow and air guide cavity 11 inner wall friction, in this way, the energy required by fan when pushing airflow through air guide cavity 11 will reduce, which means that the load of fan is reduced, under the same motor power, fan can operate more efficiently;

[0033] Specifically, when the air guide device in the embodiment is used in combination with the air conditioning unit, the fan outlet 112 is connected to the heat exchange element (such as a heat exchanger or an evaporator) in the air conditioning unit through the air guide cover 10 during assembly. Since the airflow of the fan outlet 112 is usually rotating and uneven, the air guide cavity 11 in the embodiment is provided with a plurality of first air guide plates 20 and a plurality of second air guide plates 21. When the air blown by the fan first passes through the air inlet 111, the airflow impinges on the first air guide plate 20 inclined in the first direction (vertical direction), changes the original flow direction according to the angle of the first air guide plate 20, and part of the chaotic airflow is guided in a specific direction. Moreover, since the first air guide plates 20 are arranged at intervals, the airflow can be mixed and buffered to a certain extent in the space between the first air guide plates 20, avoiding mutual interference and collision between the airflows, so that the airflow becomes orderly after passing through the first air guide plate 20.

[0034] Secondly, since the second air guide plates 21 are located above the first air guide plates 20, and the two groups of second air guide plates 21 are oppositely inclined in the second direction (horizontal direction), when the airflow preliminarily arranged by the first air guide plate 20 reaches the second air guide plate 21, the second air guide plate 21 further adjusts the airflow. Since the two groups of second air guide plates 21 are inclined in different directions, they can guide the airflow from different angles. For example, the first air guide plate 20 can guide the airflow in the vertical direction, while the second air guide plate 21 can guide the airflow in the left and right directions in the horizontal direction. In this way, the airflow can be uniformly processed in multiple dimensions, so that the airflow can be better uniformly distributed in the horizontal and vertical directions.

[0035] More specifically, since the inner diameter of the air guide cavity 11 is arranged to increase in the direction from the air inlet 111 to the air outlet 112, the air outlet area of the air guide cover 10 is larger. In this way, the airflow uniformly distributed by the two layers of air guide plates can be blown to the heat exchange surface of the heat exchange element in the air conditioning unit at a more uniform speed and direction, so that the entire heat exchange surface of the heat exchange element can be fully covered by the airflow, and the temperature distribution on the surface of the heat exchanger is more uniform, avoiding local overheating or overcooling, thereby improving the heat exchange performance of the entire heat exchanger.

[0036] It should be noted that if only one layer of guide plates is provided, it can only guide the airflow in a particular direction. For example, assuming that the layer of guide plates is inclined to the left and up, it mainly guides the airflow in this direction. However, the airflow at the fan outlet 112 is complex and is uneven in the horizontal and vertical directions. Only one layer of guide plates cannot simultaneously adjust the airflow in multiple directions, and the correction effect of airflow unevenness perpendicular to the guide plate guide direction is limited. Moreover, a single guide plate has relatively weak ability to eliminate vortexes and turbulence in the airflow. Because vortexes and turbulence have different directions and strengths in space, it is difficult for one layer of guide plates to comprehensively destroy these complex vortex and turbulence structures, resulting in part of the airflow still flowing in an irregular manner.

[0037] Thus, when the airflow is blown out by the fan, when the airflow impacts the inclined first guide plate 20, the original flow direction is changed according to the angle of the first guide plate 20, so that part of the chaotic airflow is guided in a particular direction. When the airflow that has been preliminarily arranged by the first guide plate 20 reaches the second guide plate 21, the two groups of second guide plates 21 that are inclined in different directions can divide the airflow in the horizontal direction. In this way, the airflow can be uniformly distributed in the horizontal direction, avoiding the concentration of the airflow in the middle or on one side. After the combination of the airflow blown out by the first guide plate 20 and the left-right division of the airflow by the second guide plate 21, the airflow can be reasonably guided in the three-dimensional space. In this way, the airflow speed and direction in each direction can be effectively controlled, thereby achieving a better airflow uniformity effect. The airflow that finally comes out of the guide cover 10 is more uniformly distributed in the entire outlet cross section, avoiding the situation that the local wind speed is too large or too small. The airflow blown out by the fan can be blown to the heat exchanger at a more uniform speed and direction, so that the entire heat exchange surface of the heat exchanger can be fully covered by the airflow, improving the heat exchange efficiency.

[0038] In addition, because the inner diameter of the guide cover 10 is incrementally arranged along the direction from the air inlet 111 to the air outlet 112, the fan outlet area is larger, so that the fan outlet area can be expanded, and the airflow can be effectively blown to the air conditioner main body, improving the heat exchange effect.

[0039] In particular, the first guide plate 20 and the second guide plate 21 can be connected to the inner wall of the guide cavity 11 by welding, gluing, clamping, or using connecting pieces such as screws or bolts.

[0040] In addition, the guide cover 10 in the embodiment can be integrally formed or formed by a plurality of mounting plates that are connected to each other to form the guide cavity 11.

[0041] Preferably, the fairing 10 in the embodiment is enclosed by a plurality of mounting plates, which can be formed without opening a mold, and has high assembly efficiency compared to an integrated forming mode.

[0042] Further, two first fixing members 30 are arranged in the fairing cavity 11 in the embodiment, and the two first fixing members 30 are arranged oppositely and extend in the first direction. The two ends of the plurality of first flow guide plates 20 are connected to the two first fixing members 30, respectively.

[0043] Specifically, if the first flow guide plate 20 and the fairing 10 are directly connected, the operation may need to be performed in a narrow space, and the installation is difficult. In addition, the connecting hole 12 or the welding position needs to be accurately aligned, which consumes a long time. Therefore, in the embodiment, the first fixing member 30 is arranged, the first fixing member 30 and the flow guide plate are pre-assembled when installed, and then the first fixing member 30 and the fairing 10 are connected, which is more convenient and fast, and improves the installation efficiency.

[0044] More specifically, the plurality of first clamping grooves 31 are arranged on the first fixing member 30, the plurality of first clamping grooves 31 are arranged at intervals on the first fixing member 30, and the inclination direction of the plurality of first clamping grooves 31 is consistent with the inclination direction of the plurality of first flow guide plates 20. In this way, the plurality of first flow guide plates 20 can be sequentially clamped to the first fixing member 30, so that the first flow guide plate 20 and the first fixing member 30 can be detachably connected, and the first flow guide plate 20 is convenient to disassemble and assemble, which is convenient for later maintenance or cleaning of the first flow guide plate 20.

[0045] Similarly, the embodiment also has two second fixing members 40, which are arranged oppositely and extend in the second direction when assembled. The second fixing member 40 has a plurality of connection points in the second direction for connecting the second flow guide plate 21, so that the plurality of second flow guide plates 21 are connected through the second fixing member 40, which is convenient to install.

[0046] Specifically, the first fixing member 30 has a plurality of second clamping grooves 41, the plurality of second clamping grooves 41 are arranged at intervals on the second fixing member 40, and the inclination direction of the plurality of clamping grooves is consistent with the inclination direction of the plurality of second flow guide plates 21. In this way, the plurality of second flow guide plates 21 can be sequentially clamped into the plurality of second clamping grooves 41, so that the second flow guide plate 21 and the second fixing member 40 can be detachably connected, which is convenient for later maintenance or cleaning of the second flow guide plate 21.

[0047] In another embodiment, the first guide vane 20 and the second guide vane 21 are rotatably connected to the first fixing member 30 and the second fixing member 40 respectively, for example, mounting holes are provided on the first fixing member 30 and the second fixing member 40 respectively, and then the first guide vane 20 and the second guide vane 21 are rotatably connected to the first fixing member 30 and the second fixing member 40 respectively by rotating a shaft or a connecting shaft through the mounting holes.

[0048] Specifically, since the load of the heat exchange element in the air conditioning unit varies (high load in summer and low load in winter) or the fluid inlet and outlet temperature difference is large, the flow and flow direction of the air are different in different situations, and thus the first guide vane 20 and the second guide vane 21 are rotatable, so that the first guide vane 20 and the second guide vane 21 can be rotated according to actual needs to adjust the inclination angle in real time and change the air direction, for example, in high-temperature weather, the guide vanes are adjusted to an appropriate angle to increase the air volume blowing to the heat exchange element; and in low-temperature weather, the air volume is appropriately reduced to maintain the appropriate temperature of the fluid inside the heat exchanger, and the structure is more practical.

[0049] Preferably, during assembly, connecting rods are provided at both ends of the first guide vane 20 and the second guide vane 21, and through holes are provided on the first fixing member 30 and the second fixing member 40, and the connecting rods are rotatably connected to the first fixing member 30 and the second fixing member 40 by rotating through the through holes.

[0050] Further, a plurality of connecting holes 12 are provided at the end wall of the air inlet 111, and when the air guide cover is connected to an external device (such as a fan), a connecting member (such as a screw or a bolt) can be connected thereto through the connecting holes 12, and the structure is more practical.

[0051] Embodiment 2,

[0052] Referring to Figures 1 to 5 The utility model discloses an air conditioning unit which comprises a heat exchanger, a fan and the air guide device in embodiment 1, the fan is connected with the air inlet 111 of the air guide cover 10 through the air pipe, and the air outlet 112 of the air guide cover 10 is in communication with the heat exchanger.

[0053] On the basis of the above structure, when assembling, the air outlet 112 of the fan is connected and communicated with the air inlet 111 of the flow guide cover 10, and the air outlet 112 of the flow guide cover 10 is communicated with the heat exchanger, so that when the airflow is blown out through the fan, the airflow impinges on the inclined first guide plate 20, and the original flow direction is changed according to the angle of the first guide plate 20, so that part of the chaotic airflow is guided to a specific direction and blown to the second guide plate 21;

[0054] When the airflow is blown out through the fan, the airflow impinges on the inclined first guide plate 20, and the original flow direction is changed according to the angle of the first guide plate 20, so that part of the chaotic airflow is guided to a specific direction, and when the airflow after preliminary arrangement through the first guide plate 20 reaches the second guide plate 21, the two groups of second guide plates 21 inclined in different directions can divide the airflow in the horizontal direction, so that the airflow is uniformly distributed in the horizontal direction, so that the airflow blown out through the first guide plate 20 is combined with the left and right division of the second guide plate 21, so that the airflow can be reasonably guided in the three-dimensional space, so that the airflow speed and direction in each direction can be effectively controlled, thereby achieving better flow uniformity, so that the airflow out of the flow guide cover 10 is more uniformly distributed in the entire outlet cross section, avoiding the situation that the local wind speed is too large or too small, so that the airflow blown out by the fan can be blown to the heat exchanger at a more uniform speed and direction, so that the entire heat exchange surface of the heat exchanger can be fully covered by the airflow, improving the heat exchange efficiency.

[0055] In addition, since the inner diameter of the flow guide cover 10 is incrementally arranged along the direction from the air inlet 111 to the air outlet 112, the fan air outlet area is larger, so that the fan air outlet area can be expanded, so that the airflow can be effectively blown to the air conditioner main body, improving the heat exchange effect.

[0056] The technical means disclosed in the utility model scheme is not limited to the technical means disclosed in the above-mentioned embodiments, and also includes technical solutions composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principles of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A flow guide device for an air conditioner, characterized by comprising: The application relates to a flow guide device for an air conditioner. The flow guide device comprises a flow guide cover and a flow guide plate assembly. The flow guide cover has a flow guide cavity with an air inlet and an air outlet.

2. The flow guide device for an air conditioner according to claim 1, wherein The flow guide plate assembly comprises a plurality of first flow guide plates and a plurality of second flow guide plates.

3. The flow guide device for an air conditioner according to claim 2, wherein The plurality of first flow guide plates are located in the flow guide cavity and are inclined and spaced at the air inlet in a first direction.

4. The flow guide device for an air conditioner according to claim 2, wherein The plurality of second flow guide plates are spaced in the flow guide cavity and are located above the first flow guide plates in a second direction.

5. The flow guide device for an air conditioner according to claim 4, wherein The plurality of second flow guide plates are evenly divided into two groups, and the two groups of second flow guide plates are inclined in opposite directions.

6. The flow guide device for an air conditioner according to claim 4, wherein The flow guide cavity is provided with two first fixing members.

7. The flow guide device for an air conditioner according to claim 6, wherein The two first fixing members are oppositely arranged and extend in the first direction.

8. The flow guide device for an air conditioner according to claim 1, wherein The two ends of the plurality of first flow guide plates are connected with the two first fixing members respectively.

9. The flow guide device for an air conditioner according to claim 1, wherein The first fixing member is provided with a plurality of first clamping grooves.

10. An air conditioning unit characterized by, The plurality of first clamping grooves are spaced on the first fixing member. The inclination direction of the plurality of first clamping grooves is consistent with the inclination direction of the plurality of first flow guide plates. The first fixing member is used for clamping the first flow guide plate. The flow guide cavity is provided with two second fixing members. The two second fixing members are oppositely arranged and extend in the second direction. The two second fixing members are located above the first flow guide plates. The two ends of the plurality of second flow guide plates are connected with the two second fixing members respectively. The second fixing member is provided with a plurality of second clamping grooves. The plurality of second clamping grooves are evenly divided into two groups. The inclination direction of the two groups of second clamping grooves is consistent with the inclination direction of the two groups of second flow guide plates. The second fixing member is used for clamping the second flow guide plate. The first flow guide plate and the second flow guide plate are rotatably connected with the first fixing member and the second fixing member respectively. The two ends of the first flow guide plate and the second flow guide plate are provided with connecting rods respectively. The first fixing member and the second fixing member are respectively provided with penetrating holes. The connecting rods are rotatably penetrated in the penetrating holes. The flow guide cover comprises a plurality of mounting plates. The plurality of mounting plates are connected with each other and are semi-enclosed to form the flow guide cover. The end wall of the air inlet is provided with a plurality of connecting holes. The connecting holes are used for external connection. The application further relates to an air conditioner comprising a heat exchanger, a fan and the flow guide device. The fan is connected with the air inlet of the flow guide cover through a wind pipe. The air outlet of the flow guide cover is in communication with the heat exchanger.

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