1. The utility model provides an outdoor unit's fan device which characterized in that includes:

a centrifugal impeller (4) for driving the air flow;

the air inlet flow guide piece (1) is provided with an air inlet channel, and the air inlet channel is communicated to the air inlet position of the centrifugal impeller (4); and the number of the first and second groups,

the centrifugal fan comprises an air outlet flow guide piece (2), wherein one end of the air outlet flow guide piece (2) is encircled to form a collecting cavity, a centrifugal impeller (4) is positioned in the collecting cavity, and the other end of the air outlet flow guide piece (2) is an air outlet;

the centrifugal impeller (4) enters air through the air inlet channel and exhausts air to the air outlet through the manifold.

2. The fan of claim 1, wherein the axial direction of the air inlet channel and the axial direction of the air outlet channel are parallel to each other.

3. The fan apparatus of an outdoor unit of claim 1, wherein the inlet guide (1) is connected to the outlet guide (2).

4. The outdoor unit fan device of claim 1, wherein the outlet air guide member (2) comprises a plurality of curved surfaces having different curvatures, and the plurality of curved surfaces are sequentially connected to each other.

5. The fan apparatus of the outdoor unit of claim 1, wherein the air outlet guide (2) comprises:

the first cambered surface (21) is connected with an air inlet channel of the air inlet flow guide piece (1);

a second cambered surface (22), wherein the second cambered surface (22) is connected with the first cambered surface (21); and the number of the first and second groups,

and the third cambered surface (23) is used for diffusion, and the third cambered surface (23) is connected with the second cambered surface (22).

6. The fan apparatus of an outdoor unit of claim 5, wherein the first cambered surface (21) has a radius of curvature of R1, the second cambered surface (22) has a radius of curvature of R2, and the third cambered surface (23) has a radius of curvature of R3, wherein R1< R2< R3.

7. The fan according to claim 1, wherein the width of the air outlet guide member (2) gradually expands from the flow collecting cavity to the air outlet.

8. The fan apparatus of an outdoor unit of claim 1, wherein the inlet guide (1) comprises:

a fourth cambered surface (11) extending into the centrifugal impeller (4) for guiding the air flow into the centrifugal impeller (4); and the number of the first and second groups,

and a fifth cambered surface (12) extending to surround the heat exchanger (3) and used for converging the airflow.

9. An outdoor unit comprising a casing (100), wherein a fan unit of the outdoor unit according to any one of claims 1 to 8 is provided in the casing (100).

10. The outdoor unit of claim 9, wherein a heat exchanger (3) is disposed in the air inlet guide (1), and the heat exchanger (3) is disposed at an air inlet of the centrifugal impeller (4).

11. Outdoor unit according to claim 10, characterized in that the heat exchangers (3) are arranged in one or more rows in the direction of the outlet air or in a direction perpendicular to the outlet air.

12. The outdoor unit of claim 10, wherein the heat exchanger (3) has a straight line shape, a V-shape, or a C-shape.

13. An air conditioner comprising a fan unit of an outdoor unit of any one of claims 1 to 8 or an outdoor unit of any one of claims 9 to 12.

Background

The existing outdoor unit of the air conditioner basically adopts axial flow fan blades, the air volume of the axial flow fan blades is large, the noise is high, the static pressure is low, when the outdoor unit of the air conditioner runs for a long time, the heat exchanger of the outdoor unit is easy to accumulate dust seriously, the resistance of the heat exchanger is increased, at the moment, because the static pressure generated by the axial flow fan blades is small, the resistance of the heat exchanger cannot be well overcome, the problem of surge or other abnormal noises can occur in a fan system, the air volume attenuation is serious, the performance is greatly influenced, and simultaneously, the performance and the user experience of the air conditioner are seriously influenced along with the increase of the noise of the fan.

Disclosure of Invention

In order to solve the technical problem that surge or other abnormal noises can occur in a fan system, the application provides a fan device of an outdoor unit, the outdoor unit and an air conditioner.

In a first aspect, the present application provides an outdoor unit's fan device, including:

a centrifugal impeller for driving an air flow;

the air inlet flow guide piece is provided with an air inlet channel which is communicated with the air inlet position of the centrifugal impeller; and the number of the first and second groups,

one end of the air outlet flow guide piece is enclosed into a flow collecting cavity, the centrifugal impeller is positioned in the flow collecting cavity, and the other end of the air outlet flow guide piece is an air outlet;

the centrifugal impeller enters air through the air inlet channel and exhausts air to the air outlet through the manifold.

In an embodiment of the present application, the air inlet channel axis direction and the air outlet axis direction are parallel to each other.

In an embodiment of the present application, the air inlet guide member is connected to the air outlet guide member.

In an embodiment of this application, air-out water conservancy diversion spare includes the cambered surface that the multistage camber is different, the multistage connect gradually between the cambered surface.

In one embodiment of the present application, the arc surfaces are in smooth transition.

In an embodiment of this application, the air-out water conservancy diversion spare includes:

the first cambered surface is connected with the air inlet channel of the air inlet flow guide piece;

the second cambered surface is connected with the first cambered surface; and

and the third cambered surface is used for diffusion, and is connected with the second cambered surface.

In an embodiment of the present application, the radius of curvature of the first arc surface is R_1，The curvature radius of the second cambered surface is R_2，The curvature radius of the third cambered surface is R_3，Wherein R is₁<R₂<R₃。

In an embodiment of the present application, the width of the air outlet diversion member gradually expands from the flow collection cavity to the air outlet direction.

In one embodiment of the present application, the centrifugal impeller has a thickness of H₁The height of the air outlet flow guide part is H₂Wherein H is₂＝1.5-3H₁。

In one embodiment of the present application, the centrifugal impeller has an outer diameter D₁The outlet width of the second cambered surface is D₂The outlet width of the second cambered surface is D₃Wherein D is₂＝2-3D₁，D₃＝1.2-1.5D₂。

In an embodiment of the present application, the inlet guide member includes:

the fourth cambered surface extends into the centrifugal impeller and is used for guiding airflow into the centrifugal impeller; and the number of the first and second groups,

and the fifth cambered surface extends to surround the heat exchanger and is used for converging the airflow.

In an embodiment of the present application, the radius of curvature of the fourth arc surface is R₄The outer diameter of the centrifugal impeller is D₁,R₄＝1/10-1/12D₁。

In a second aspect, an embodiment of the present application provides an outdoor unit, which includes a casing, and the fan in any one of the embodiments of the first aspect is disposed in the casing.

In an embodiment of this application, set up the heat exchanger in the inlet air water conservancy diversion spare, the heat exchanger sets up centrifugal impeller's the department of admitting air.

In an embodiment of this application, along the air-out direction, perhaps, along the direction of perpendicular to air-out, the heat exchanger arranges one or more rows.

In an embodiment of the present application, the heat exchanger is linear, V-shaped, or C-shaped.

In an embodiment of the present application, a cavity is provided in the housing, and the cavity is used for placing a compressor.

In a third aspect, an embodiment of the present application provides an air conditioner, including the blower fan according to any one of the embodiments of the first aspect or the outdoor unit according to any one of the embodiments of the second aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:

the utility model provides a fan device of off-premises station, including centrifugal impeller, income wind water conservancy diversion spare and air-out water conservancy diversion spare, it is equipped with the inlet channel to go into wind water conservancy diversion spare, after getting into centrifugal impeller with the gas drainage by the inlet channel, do work to gas by centrifugal impeller, at this moment, gas obtains kinetic energy, air-out water conservancy diversion spare is equipped with manifold and air outlet, the gas that comes out from centrifugal impeller is collected to the manifold, and carry gas in the atmosphere through the air outlet, air-out water conservancy diversion spare can realize the continuous pressure boost to gas, the partial kinetic energy of gas converts pressure energy into at this in-process, reducible export dynamic pressure loss, and improve the static pressure of whole fan device, effectively overcome the condenser and cause the problem of resistance increase because of reasons such as deposition, avoid the off-premises station surge or other abnormal noise problems to appear.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic view of an overall structure of an outdoor unit according to an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of an outdoor unit according to an embodiment of the present application;

fig. 3 is a cross-sectional view of an outdoor unit according to a second embodiment of the present application;

fig. 4 is a cross-sectional view of an outdoor unit according to a third embodiment of the present application;

FIG. 5 is a cross-sectional view of a fan apparatus provided in an embodiment of the present application;

FIG. 6 is an airflow diagram of a fan device at a first viewing angle according to an embodiment of the present disclosure;

fig. 7 is an airflow diagram of a fan device at a second viewing angle according to an embodiment of the present disclosure.

Reference numerals:

100. a housing; 1. an air inlet flow guide member; 11. a fourth arc surface; 12. a fifth cambered surface; 2. an air outlet guide piece 21 and a first cambered surface; 22. a second arc surface; 23. a third cambered surface; 3. a heat exchanger; 4. a centrifugal impeller; 5. a cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The existing outdoor unit of the air conditioner basically adopts axial flow fan blades, the air volume of the axial flow fan blades is large, the noise is high, the static pressure is low, when the outdoor unit of the air conditioner runs for a long time, the heat exchanger of the outdoor unit is easy to accumulate dust seriously, the resistance of the heat exchanger is increased, at the moment, because the static pressure generated by the axial flow fan blades is small, the resistance of the heat exchanger cannot be well overcome, the air volume attenuation is serious, the performance is greatly influenced, and meanwhile, the performance and the user experience of the air conditioner are seriously influenced along with the increase of the noise of a fan.

On one hand, the arrangement mode of devices in the air conditioner outdoor unit is improved in the related technology, the heat exchanger is arranged on the air blowing side of the fan, so that the heat dissipation of the heat exchanger is realized through air blowing, and the problem of insufficient air supply of the heat exchanger due to increased resistance is solved, but the problem of increased resistance caused by dust deposition and the like of the heat exchanger cannot be well solved by the mode, the speed of airflow is rapidly reduced when the airflow flows in a narrow space due to smaller gaps of the heat exchanger, and the air quantity flowing when the fan blows to the heat exchanger is still only a small part; on the other hand, in the related art, the axial flow fan used by the common outdoor unit of the air conditioner is replaced by the cross-flow fan, so that the noise is reduced, the air outlet is more uniform, the cross-flow fan blade has the characteristics of large air volume and low noise, but the static pressure provided by the cross-flow fan blade is also small, and the problem of insufficient air supply of the heat exchanger due to the increase of the resistance is solved.

In view of the above problem, the present application provides a fan, including: a centrifugal impeller for driving an air flow; the air inlet flow guide piece is provided with an air inlet channel which is communicated with the air inlet position of the centrifugal impeller; one end of the air outlet flow guide piece is enclosed into a collecting cavity, the centrifugal impeller is positioned in the collecting cavity, and the other end of the air outlet flow guide piece is an air outlet; the centrifugal impeller enters air through the air inlet channel and exhausts air to the air outlet through the manifold.

The fan adopts a centrifugal impeller, and the centrifugal impeller accelerates gas by utilizing an impeller rotating at a high speed according to the principle of converting kinetic energy into potential energy, and then decelerates and changes the flow direction so as to convert the kinetic energy into the potential energy. In a single stage centrifugal impeller, the gas enters the impeller from an axial direction, changes to a radial direction as it flows through the impeller, and then enters the diffuser. In diffusers, the gas changes flow direction and the increase in conduit cross-sectional area slows the gas flow, which converts kinetic energy into pressure energy. The pressure increase occurs primarily in the impeller and secondarily in the diffusion process. In a multistage centrifugal impeller, a flow back is used to bring the gas flow to the next impeller, creating a higher pressure. The centrifugal impeller has the characteristics of low noise and high static pressure, can effectively overcome the problem of resistance increase caused by dust deposition of a condenser and the like, ensures that the air quantity of the outdoor unit is not attenuated, and simultaneously ensures that the noise of the outdoor unit is at a lower noise level.

For a more particular understanding of the technical idea of the present application, exemplary embodiments are described below with reference to the accompanying drawings:

as shown in fig. 1-7, the present application provides a fan, including: a centrifugal impeller 4 for driving an air flow; the air inlet flow guide piece 1 is provided with an air inlet channel which is communicated with the air inlet position of the centrifugal impeller 4; one end of the air outlet flow guide piece 2 is enclosed into a collecting cavity, the centrifugal impeller 4 is positioned in the collecting cavity, and the other end of the air outlet flow guide piece 2 is an air outlet; the centrifugal impeller 4 enters air through the air inlet channel and exhausts air to the air outlet through the manifold.

The utility model provides a fan device of off-premises station, including centrifugal impeller 4, income wind water conservancy diversion spare 1 and air-out water conservancy diversion spare 2, income wind water conservancy diversion spare 1 is equipped with into the wind passageway, after getting into centrifugal impeller 4 with the gas drainage by the passageway of intaking, do work to gas by centrifugal impeller 4, at this moment, gas obtains kinetic energy, air-out water conservancy diversion spare 2 is equipped with manifold and air outlet, the gas that comes out from centrifugal impeller 4 is collected to the manifold, and carry gas in the atmosphere through the air outlet, air-out water conservancy diversion spare 2 can realize constantly the pressure boost to gas, the gaseous partial kinetic energy of this in-process converts pressure energy into, reducible export dynamic pressure loss, and improve the static pressure of whole fan device, effectively overcome the condenser and cause the problem of resistance increase because of reasons such as deposition, avoid the off-premises station surge or other abnormal noise problems to appear.

In some embodiments, in order to ensure that the air inlet direction and the air outlet direction of the centrifugal impeller 4 are respectively the shaft inlet and the shaft outlet direction, the axial direction of the air inlet channel and the axial direction of the air outlet are parallel to each other, so as to ensure the air. Further, in order to prevent the gas from leaking, the air inlet flow guide piece 1 is connected with the air outlet flow guide piece 2 so as to prevent the gas from leaking from the gap between the air inlet flow guide piece 1 and the air outlet flow guide piece 2.

For the air outlet flow guide piece 2, the air outlet flow guide piece 2 comprises a plurality of sections of cambered surfaces with different curvatures, and the plurality of sections of cambered surfaces are in smooth transition in sequence. Specifically, the width of the air outlet flow guide member 2 gradually expands from the air inlet to the air outlet. The variable-curvature multi-arc surface can realize continuous pressurization on gas, partial kinetic energy of the gas is converted into pressure energy in the process, dynamic pressure loss of an outlet can be reduced, the static pressure of the whole centrifugal impeller 4 system is improved, the problem that resistance of a condenser is increased due to reasons such as dust deposition can be effectively solved, and the problem that surge or other abnormal noises of an outer machine occur is avoided.

More specifically, as shown in fig. 5, the air outlet guide member 2 includes: the first cambered surface 21 is connected with the air outlet of the air inlet flow guide piece 1; a second arc surface 22, wherein the second arc surface 22 is connected with the first arc surface 21; and a third arc surface 23 for diffusion, the third arc surface 23 being connected to the second arc surface 22.

For the curvature radius of each arc, the curvature radius of the first arc 21 is R1, the curvature radius of the second arc 22 is R2, and the curvature radius of the third arc 23 is R3, where R1< R2< R3.

According to the analysis of the outlet air flow angle of the centrifugal impeller 4, in order to ensure the fluency of the outlet air flow and reduce the on-way wind resistance, the thickness of the centrifugal impeller 4 is H1, and the height of the outlet air guide piece 2 is H2, wherein H2 is 1.5-3H 1.

According to centrifugal impeller 4's air-out air current angle analysis, for guaranteeing air-out air current's fluency, reduce along journey windage, centrifugal impeller 4's external diameter is D1, the exit width of second cambered surface 22 is D2, and wherein, D2 is 2-3D1, for reducing the export air current velocity of flow to slow down the impact of high-speed air current to the grid and produce aerodynamic noise, design export diffusion section, be second cambered surface 22 promptly, the exit width of second cambered surface 22 is D3, and D3 is 1.2-1.5D2, satisfies the demand of quick diffusion.

In an embodiment of the present application, the air inlet guide member 1 includes: a fourth cambered surface 11 extending into the centrifugal impeller 4 for guiding the air flow into the centrifugal impeller 4; and a fifth cambered surface 1212 extending to surround the heat exchanger 3 for converging the air flow. The designed high-efficiency flow collecting device consists of two sections of arc-shaped air inlet flow guide pieces 1, wherein the opening of the air inlet flow guide piece 11 is inward and extends into the centrifugal impeller 4 for a certain distance, the opening of the air inlet flow guide piece 12 is outward to form a flow collecting port opposite to the condenser, and the air inlet flow guide piece and the flow collecting port form a smooth tapered flow passage, so that gas is accelerated under the condition of ensuring that the pressure loss of an inlet is very small, and a uniform speed field and a uniform pressure field are established at the inlet of the centrifugal impeller 4.

In an embodiment of the present application, a curvature radius of the fourth arc surface 11 is R4, an outer diameter of the centrifugal impeller 4 is D1, and R4 is 1/10-1/12D 1. Preferably, R4 ═ 1/10D 1.

In a second aspect, an embodiment of the present application provides an outdoor unit, including a casing 100, where a fan device of the outdoor unit in any one of the embodiments of the first aspect is disposed in the casing 100.

In some embodiments, a heat exchanger 3 is arranged in the air inlet guide member 1, and the heat exchanger 3 is arranged at the air inlet of the centrifugal impeller 4. As shown in fig. 6-7, the heat exchangers 3 are arranged in one or more rows along the wind outlet direction, or along the direction perpendicular to the wind outlet direction. Preferably, the heat exchangers 3 can be arranged in one row, two rows or three rows, so that the size of the whole machine is effectively reduced while the performance of the whole machine is ensured.

As shown in fig. 2 to 4, the heat exchanger 3 is a straight line type, a V-shape or a C-shape. The heat exchanger 3 can be arranged in a multi-row V-shaped parallel mode except for a C-shaped arrangement mode, the space of the heat exchanger 3 is further reduced while the performance is ensured, the high static pressure advantage of the fan is fully exerted, and the heat exchange efficiency is improved.

In other embodiments, a cavity 5 is disposed in the housing 100, and the cavity 5 is used for accommodating a compressor.

Wherein, need the understanding of skilled person in the art, adopt centrifugal impeller 4 as the fan of air condensing units, combine into the fan device of air inlet guiding component 1 and air outlet guiding component 2 constitution, can exert the characteristics of centrifugal impeller 4 system low noise, high static pressure to heat exchanger 3 sets up in the leeward department of centrifugal impeller 4, avoided heat exchanger 3 deposition serious, prevent to make the serious problem of air volume decay produce because the resistance increase of heat exchanger 3, thereby reach and make the complete machine noise low, the static pressure is big, can effectively overcome the effect of heat exchanger 3 resistance.

In a third aspect, an embodiment of the present application provides an air conditioner including the outdoor unit according to any one of the embodiments of the second aspect.

It is noted that in the description and claims of the present application and in the above-mentioned drawings, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. It is to be understood that the data so used is 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.

Also, the terms "comprises," "comprising," and "having," as well as any variations thereof or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications and changes to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.