CN107036184A - Outdoor unit of air conditioner - Google Patents

Abstract

The invention discloses an air conditioner outdoor unit and relates to the technical field of refrigeration equipment. The utility model is invented to solve the problem that the heat exchanging performance of the heat exchanger is affected by the large air outlet and return flow of the existing air conditioner outdoor unit. The outdoor unit of the air conditioner of the present invention includes a housing, the housing is provided with an air outlet, the upper cover of the air outlet is provided with an air outlet cover, and an air duct is formed in the housing, and the air duct is connected with the air outlet. In communication, an axial flow fan is provided near the air outlet in the air duct, and the axial flow fan includes a hub and a plurality of blades arranged around the hub. There is a circular platform-shaped air guide structure, the bottom surface of the air guide structure faces the air outlet cover, the top surface faces the hub, and an air guide channel is formed between the side surface and the inner wall of the air duct. One end of the channel communicates with the air outlet side of the blade, and the other end communicates with the air outlet cover. The air conditioner outdoor unit of the present invention is used for a split type air conditioner.

Description

An air conditioner outdoor unit

technical field

The invention relates to the technical field of refrigeration equipment, in particular to an air conditioner outdoor unit.

Background technique

At present, the commonly used air conditioners are split-type air conditioners. The split-type air conditioners include an indoor unit and an outdoor unit, and the outdoor unit is provided with components such as a heat exchanger, a compressor, and a fan.

As an example, Fig. 1 is an outdoor unit of an air conditioner in the prior art. Referring to Fig. 1, the outdoor unit of an air conditioner includes a casing 01, an air outlet is opened on the casing 01, and an air outlet cover 02 is provided at the air outlet. Inside the body 01 , an axial flow fan 03 is provided at a position opposite to the air outlet cover 02 , and when the axial flow fan 03 rotates, it can drive airflow to be discharged from the air outlet cover 02 . Since the axial fan 03 usually includes a hub and a plurality of blades arranged around the hub, when the axial fan rotates, the blades generate axial pressure to drive the airflow along the axial direction of the fan, and at the same time generate centrifugal force to drive the airflow along the axial direction of the fan. The radial flow of the blade, thus forming a negative pressure around the air outlet side of the hub, under the action of this negative pressure, the airflow flowing from the air outlet side of the blade to the air outlet cover can flow in the opposite direction to between the hub and the air outlet cover In the gap, it even flows back to around the heat exchanger 04 in the shell to exchange heat with the heat exchanger 04 in the shell again, resulting in a heat exchange temperature difference (that is, the surface temperature of the heat exchanger and the temperature around the heat exchanger Air temperature difference) becomes smaller, thereby reducing the heat transfer performance of the air conditioner outdoor unit. Moreover, impacts are likely to occur between the returning hot air and the forward-flowing air, which increases the noise of the outdoor unit of the air conditioner.

Contents of the invention

The invention provides an air conditioner outdoor unit, which can reduce backflow and reduce noise at the same time.

In order to achieve the above object, the present invention provides an air conditioner outdoor unit, which includes a housing, the housing is provided with an air outlet, the air outlet is covered with an air outlet cover, and an air duct is formed inside the housing. The air duct communicates with the air outlet, and an axial flow fan is arranged in the air duct near the air outlet, and the axial flow fan includes a hub and a plurality of blades arranged around the hub, and the hub A conical air guide structure is provided between the air outlet cover and the bottom surface of the air guide structure faces the air outlet cover, the top face faces the hub, and a circle of the side surface is formed between the inner wall of the air duct. There is an air guide channel, one end of the air guide channel communicates with the air outlet side of the blade, and the other end communicates with the air outlet cover.

An air conditioner outdoor unit provided by the present invention has an air outlet on the housing, an air outlet cover is provided on the upper cover of the air outlet, and an air duct is formed in the housing, the air duct communicates with the air outlet, and the inside of the air duct is close to the air outlet. An axial flow fan is installed at the position, so when the axial flow fan rotates, the airflow can be driven to flow along the air duct and be discharged from the air outlet. Compared with the prior art, since the hub of the axial flow fan and the air outlet hood are provided with a circular platform-shaped air guiding structure, the bottom surface of the air guiding structure faces the air outlet, the top surface faces the hub, and a circle between the side and the inner wall of the air duct is formed. Air guide channel, one end of the air guide channel communicates with the air outlet side of the blade of the axial flow fan, and the other end communicates with the air outlet cover, so that the air guide structure can block the gap between the hub and the air outlet cover, and guide the air flow from The air outlet side of the blade is blown out in the forward direction, thereby preventing the hot air from flowing back into the gap between the hub and the air outlet cover and around the heat exchanger, so that the heat exchanger has a higher heat exchange temperature difference, thereby improving the performance of the air conditioner. The heat transfer performance of the outdoor unit. At the same time, since the air guiding structure can effectively prevent the hot air from flowing back, it can avoid the noise caused by the impact between the return air and the exhaust air, thereby reducing the noise of the outdoor unit of the air conditioner.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic structural view of an air conditioner outdoor unit in the prior art;

Fig. 2 is a first structural schematic diagram of an air conditioner outdoor unit according to an embodiment of the present invention;

Fig. 3 is a second structural schematic diagram of an outdoor unit of an air conditioner according to an embodiment of the present invention;

Fig. 4 (a) is the first structure schematic diagram of the air guide structure in the outdoor unit of the air conditioner according to the embodiment of the present invention;

Fig. 4 (b) is the second structure schematic diagram of the air guiding structure in the outdoor unit of the air conditioner according to the embodiment of the present invention;

5 is a schematic diagram of a third structure of an outdoor unit of an air conditioner according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of a fourth structure of an outdoor unit of an air conditioner according to an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

Referring to Fig. 2, Fig. 2 is a specific embodiment of the outdoor unit of the air conditioner according to the embodiment of the present invention. The outdoor unit of the air conditioner in this embodiment includes a housing 1, the housing 1 is provided with an air outlet, and the upper cover of the air outlet is provided with There is an air outlet cover 2, an air duct 3 is formed in the housing 1, the air duct 3 communicates with the air outlet, and an axial fan 4 is arranged in the air duct 3 near the air outlet, The axial flow fan 4 includes a hub 41 and a plurality of blades 42 arranged around the hub 41. A conical air guide structure 5 is provided between the hub 41 and the air outlet cover 2, as shown in FIG. 3 As shown, the bottom surface 51 of the air guide structure 5 faces the air outlet cover 2, the top surface 52 faces the hub 41, and an air guide channel 6 is formed between the side 53 and the inner wall of the air channel 3 (as shown in the figure). 2), one end of the air guide channel 6 communicates with the air outlet side of the blade 42, and the other end communicates with the air outlet cover 2.

An air conditioner outdoor unit provided by the present invention, as shown in FIG. 3 communicates with the air outlet, and an axial flow fan 4 is provided in the air duct 3 close to the air outlet, so when the axial fan 4 rotates, the airflow can be driven to flow along the air duct 3 and be discharged from the air outlet. Compared with the prior art, since the hub 41 of the axial flow fan 4 and the air outlet cover 2 are provided with a conical air guide structure 5, as shown in Figure 3, the bottom surface 51 of the air guide structure 5 faces the air outlet, and the top surface 52 faces the hub 41, and an air guide channel 6 (as shown in Figure 2 ) is formed between the side 53 and the inner wall of the air channel 3 . One end of the air guide channel 6 communicates with the air outlet side of the blade 42 of the axial flow fan 4 , and the other end It communicates with the air outlet cover 2, so that the air guide structure 5 can cover the gap between the hub 41 and the air outlet cover 2, and guide the airflow to be blown out from the air outlet side of the blade 42, thereby preventing hot air from flowing back to the hub 41 and the air outlet cover 2 and around the heat exchanger, so that the heat exchanger has a higher heat exchange temperature difference, thereby improving the heat exchange performance of the air conditioner outdoor unit. At the same time, since the air guiding structure 5 can effectively prevent the hot air from flowing back, it can avoid the noise generated by the impact between the returning air and the exhausted air, thereby reducing the noise of the outdoor unit of the air conditioner.

In the above embodiments, the wind guiding structure 5 can be made of plastic material, or can be made of metal material, which is not specifically limited here.

In the embodiment shown in FIG. 2, in order to effectively block the gap between the hub 41 and the air outlet cover 2, preferably, as shown in FIG. In this way, the gap between the hub 41 and the air outlet cover 2 can be effectively blocked by the air guide structure 5, thereby preventing backflow as much as possible. Simultaneously, since the top surface 52 of the wind guiding structure 5 is compatible with the shape and size of the surface of the hub 41 near the air outlet, it can avoid the excessive size of the top surface 52 of the wind guiding structure 5 and the airflow driven by the blades 42. Resistance, thereby improving the smoothness of the wind guiding structure 5.

In the embodiment shown in FIG. 2 , the diameter of the air guiding structure 5 may gradually increase along the flow direction of the air in the air guiding channel 6 , or may remain unchanged, which is not specifically limited here. However, in order to increase the outflow velocity of the airflow at the air outlet cover 2, to reduce the possibility of air backflow, preferably, as shown in Figure 2 or Figure 3, along the flow direction of the wind in the air guide channel 6, the air guide structure 5 The diameter of the airflow gradually increases, so that the cross-sectional area of the air guide channel 6 gradually decreases, thereby increasing the outflow velocity of the airflow at the airflow cover 2, because the greater the flow velocity of the airflow, the lower the possibility of backflow, so the airflow After the flow velocity of the airflow at the cover 2 is increased, the possibility of air backflow can be further reduced.

In the above embodiment, the generatrix of the side 53 of the air guide structure 5 can be an inclined straight line, or a curve whose middle part is sunken toward the central axis of the air guide structure 5, or a curve whose central part is away from the central axis of the air guide structure. The direction of the convex curve is not specifically limited here. But, in order to improve the drainage smoothness of the side 53 of the air guide structure 5, preferably, the generatrix of the side 53 of the air guide structure 5 is an inclined straight line (as shown in FIG. The direction of the central axis is a concave curve (as shown in Figure 4 (b)), so as to avoid the side 53 middle part of the air guide structure 5 protruding outwards and forming resistance to the air flow, thereby improving the drainage of the side 53 of the air guide structure 5 fluency.

In the embodiment shown in FIG. 3 , the air guide structure 5 may be a solid structure or a hollow structure, which is not specifically limited here. However, in order to reduce the weight of the air guide structure 5 and save the material cost of the air guide structure 5, preferably, as shown in Figure 2, the air guide structure 5 is a hollow shell-like structure, and the hollow part of the air guide structure 5 Through the bottom surface of the air guide structure 5, like this, by designing the air guide structure 5 as a hollow shell-like structure, and making the hollow part of the air guide structure 5 run through the bottom surface of the air guide structure 5, the weight of the air guide structure 5 can be reduced, At the same time, the material cost of the air guiding structure 5 is saved.

In the embodiment shown in Fig. 2, preferably, the air guide structure 5 is integrally formed by injection molding. The injection molding process is simple and easy to operate, which is beneficial to reduce the difficulty of making the air guide structure 5 and improve the air guide structure. The crafting efficiency of structure 5.

In the embodiment shown in Figure 2, in order to make the airflow driven by the blade 42 pass through the air outlet cover 2 smoothly and be discharged, and at the same time in order to improve the airflow driven by the blade 42 as much as possible when passing through the air outlet cover 2 Speed, preferably, the ratio of the bottom surface area of the air guide structure 5 to the area of the air outlet is 0.25 to 0.6, and when the ratio of the bottom surface area of the air guide structure 5 to the area of the air outlet is within this range, the blades 42 can be The driven airflow can pass through the air outlet cover 2 smoothly and be discharged, and at the same time, the speed of the airflow driven by the blades 42 passing through the air outlet cover 2 can be increased as much as possible. When the ratio of the area of the bottom surface of the air guide structure 5 to the area of the air outlet is less than 0.25, the area of the air outlet surface on the air outlet cover 2 is relatively large, and the airflow cannot be effectively gathered, so the speed of the airflow passing through the air outlet cover 2 is relatively low. low, the possibility of backflow is greater; when the ratio of the bottom surface area of the air guide structure 5 to the area of the air outlet is greater than 0.6, the area of the air outlet surface on the air outlet cover 2 is small, and the resistance to the airflow is relatively large. The airflow through the fan shroud is less smooth.

In the embodiment shown in Figure 2, the air guide structure 5 can be fixed on the hub 41 of the axial flow fan 4, can also be fixed on the air outlet cover 2, and can also be fixed on the inner wall of the air duct 3 through connecting ribs , not specifically limited here. When adopting the above-mentioned first scheme, that is, the air guide structure 5 is fixed on the hub 41 of the axial flow fan 4. At this time, when the axial flow fan 4 is driven by the motor to rotate, the air guide structure 5 follows the axial flow. The fan 4 rotates together, thereby increasing the load of the motor; The connecting ribs are arranged in the air channel 6 , the structure is complicated, and it can generate certain resistance to the airflow in the air channel 6 , thereby reducing the smoothness of the air guide channel 6 . In order to avoid the above problems, it is preferable to adopt the second solution above, that is, the air guiding structure 5 is fixed on the air outlet cover 2. Specifically, as shown in FIG. 5 or FIG. 6, on the air outlet cover 2, the corresponding air guide The position of the structure 5 is provided with an opening, and the edge of the bottom surface of the air guide structure 5 is fixed to the edge of the air outlet cover 2 at the opening. Because when the air guide structure 5 is connected on the air outlet cover 2, there is no need to rotate, so the load of the motor for driving the axial flow fan 4 can be reduced, and there is no need to arrange the connecting ribs in the air outlet channel, thereby avoiding It affects the smoothness of the air outlet of the air outlet channel.

Specifically, as shown in Figure 5 or Figure 6, in order to realize the fixing of the edge of the bottom surface 51 of the air guiding structure 5 and the edge of the air outlet cover 2 at the opening, optionally, the edge of the bottom surface 51 of the air guiding structure 5 is provided with a There are a plurality of buckles, and the air guide structure 5 is connected to the edge of the air outlet cover 2 at the opening through a plurality of buckles. This structure is simple and easy to implement, and compared with the threaded connection, the clamping operation process is simple, takes less time and has higher efficiency.

Other configurations of the outdoor unit of the air conditioner in the embodiment of the present invention are well known to those skilled in the art, and will not be described in detail here.

In the description of this specification, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. a kind of air-conditioner outdoor unit, including housing, the housing are provided with air outlet, the air outlet and are covered with outlet housing, Air channel is formed with the housing, the air channel is connected with the air outlet, close to the position of the air outlet in the air channel Provided with aerofoil fan, the aerofoil fan includes wheel hub and the multiple blades set for one week around the wheel hub, it is characterised in that It is provided with the air guide structure of circular platform type between the wheel hub and the outlet housing, the bottom surface of the air guide structure is towards the air-out Cover, top surface is formed with air-guiding aisle for one week towards the wheel hub, side between the inwall in the air channel, the air-guiding aisle One end is connected with the air side of the blade, and the other end is connected with the outlet housing.

2. air-conditioner outdoor unit according to claim 1, it is characterised in that the top surface of the air guide structure is leaned on the wheel hub The shape and size on the surface of the nearly air outlet are adapted.

3. air-conditioner outdoor unit according to claim 1 or 2, it is characterised in that the flowing side of wind along along the air-guiding aisle To the diameter of the air guide structure gradually increases.

4. air-conditioner outdoor unit according to claim 3, it is characterised in that the bus of the air guide structure side is inclined Straight line.

5. air-conditioner outdoor unit according to claim 3, it is characterised in that the bus of the air guide structure side be middle part to The curve being recessed close to the direction of the air guide structure axis.

6. air-conditioner outdoor unit according to claim 1, it is characterised in that the air guide structure is hollow shell-like structure, And the hollow space of the air guide structure runs through the bottom surface of the air guide structure.

7. air-conditioner outdoor unit according to claim 1, it is characterised in that the air guide structure by injection molding method one into Type.

8. air-conditioner outdoor unit according to claim 1, it is characterised in that the base area of the air guide structure with it is described go out The area ratio in air port is 0.25~0.6.

9. air-conditioner outdoor unit according to claim 1, it is characterised in that on the outlet housing, correspond to the air guide structure Position be provided with opening, the edge of the bottom surface of the air guide structure is fixed for one week with the outlet housing edge at the opening.

10. air-conditioner outdoor unit according to claim 9, it is characterised in that the edge of the bottom surface of the air guide structure one week Provided with multiple buckles, the air guide structure is connected in the outlet housing edge at the opening by multiple buckles.