CN217582580U

CN217582580U - Air conditioner

Info

Publication number: CN217582580U
Application number: CN202220639272.6U
Authority: CN
Inventors: 赵鹏飞; 王皓楠
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-10-14
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses an air conditioner, include: the air conditioner comprises a shell, a fan and a controller, wherein the shell is provided with an air inlet part and an air outlet part; a heat exchanger disposed within the housing for exchanging heat with an air stream within the housing; axial fan set up in the heat exchanger with go out between the air-out portion for follow after inhaling the air current that will flow through the heat exchanger the air-out portion discharges, axial fan including: a hub; a plurality of blades arranged along the circumference of the hub, suction surfaces formed on the blades, the blades including: the suction surface corresponding to the blade root section is provided with a plurality of convex parts and a plurality of concave parts which are sequentially and alternately arranged; and the blade top section is a straight section, and the joint of the blade top section and the blade root section is in smooth transition connection. Through the utility model provides a heavy problem of blade weight that axial compressor air supply arrangement of current air conditioner exists.

Description

Air conditioner

Technical Field

The utility model relates to an air conditioner technical field especially relates to the improvement of air conditioner structure.

Background

An air conditioner, which is a household appliance commonly used in daily life, generally includes an indoor unit installed at an indoor side and an outdoor unit installed at an outdoor side.

Axial flow air supply devices can be correspondingly arranged inside the indoor unit and the outdoor unit, and air suction and heat exchange effects can be realized through the axial flow air supply devices.

The existing axial flow air supply device applied to the air conditioner is mainly of a straight smooth blade structure, a plurality of blades are spirally arranged, and pressure surfaces and suction surfaces on two sides of each blade are straight smooth surfaces. In order to ensure the strength, the thickness of the blade root is far larger than that of the blade top, so that the weight of the fan is increased, and materials are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air conditioner has solved the heavy problem of weight that current air conditioner's axial compressor air supply arrangement exists, the utility model discloses a blade root section part at the suction side of blade sets up bellying and depressed part complex mode, has not only guaranteed the intensity of blade root department, but also can play and subtract heavy, drag reduction and noise reduction effect.

The utility model discloses mainly realize through following technical scheme:

an air conditioner comprising: the air conditioner comprises a shell, wherein an air inlet part and an air outlet part are formed in the shell;

a heat exchanger disposed within the housing for exchanging heat with an air stream within the housing;

axial flow air supply arrangement, axial flow air supply arrangement set up in the heat exchanger with between the air-out portion for follow after inhaling the air current of flowing through the heat exchanger air-out portion discharges, axial flow air supply arrangement including: a hub;

a plurality of blades arranged along the circumference of the hub, suction surfaces are formed on the blades, and the blades comprise:

the suction surface corresponding to the blade root section is provided with a plurality of convex parts and a plurality of concave parts which are sequentially and alternately arranged;

and the blade top section is a straight section, and the joint of the blade top section and the blade root section is in smooth transition connection.

In some embodiments of the present application, the blade further comprises a pressure surface arranged on both sides of the blade opposite to the suction surface, the pressure surface also having the protrusions and the recesses arranged thereon, the plurality of protrusions and the plurality of recesses being arranged alternately in sequence.

In some embodiments of the present application, the vane includes a vane leading edge and a vane trailing edge, the height of the protrusion gradually increases along the direction from the vane trailing edge to the vane leading edge, and the height of the recess gradually increases along the direction from the vane trailing edge to the vane leading edge.

In some embodiments of the present application, a height reduction value of the convex portion near the leading edge side of the blade is larger than a height reduction value of the convex portion near the trailing edge side of the blade, and a height reduction value of the concave portion near the leading edge side of the blade is larger than a height reduction value of the concave portion near the trailing edge side of the blade.

In some embodiments of the present application, the blade includes a blade leading edge and a blade trailing edge, and the root section includes a blade root body section, and a thickness of the blade root body section becomes gradually smaller in a direction from the blade leading edge to the blade trailing edge.

In some embodiments of the present application, the thickness values of the blades corresponding to the blade tip sections are all the same in the direction from the blade leading edge to the blade trailing edge.

In some embodiments of the present application, the thickness value of the blade corresponding to the cross section of the tip section is gradually decreased in a direction from the leading edge of the blade to the trailing edge of the blade.

In some embodiments of the present application, the thickness value of the tip section is smaller than the corresponding blade thickness value at any cross-sectional position of the blade root section.

In some embodiments of the present application, the convex portion is an arc-shaped convex portion formed by protruding from the blade root body section outwards, the concave portion is an arc-shaped concave groove formed by recessing from the blade root body section inwards, and the arc-shaped convex portion and the arc-shaped concave groove are connected in a smooth transition manner.

In some embodiments of the present application, the protrusion is a rectangular protrusion protruding outward from the blade root body segment, the recess is a rectangular recessed groove recessed inward from the blade root body segment, and the rectangular protrusion and the rectangular recess are connected in a smooth transition manner.

The utility model discloses there are following advantage and positive effect:

the utility model provides an air conditioner, improve the blade structure of axial compressor air supply arrangement of air conditioner, suction side at the blade root that the radius is little, the wind speed is low sets up bellying and depressed part, form wavy structure at blade root section part through the cooperation of a plurality of bellyings and a plurality of depressed parts, the thickness of blade root section has been increased through the setting of bellying, the intensity of blade has been guaranteed, and the mode that the blade root section set up to bellying and depressed part, compare with the mode of simply increasing blade root thickness, it subtracts heavy still to have realized, the lightweight setting of axial compressor air supply arrangement has been realized, the cost is reduced;

through the wave-shaped structure blade root structure, the groove-like structure with the concave part is correspondingly formed at the blade root section, and the friction resistance on the surface of the fan blade can be reduced through the arranged groove, so that the efficiency of the fan is improved;

the top section of the blade with large radius and high wind speed adopts a thin-sheet straight section structure, so that the resistance can be reduced, and the noise can be reduced.

Drawings

Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present invention;

fig. 2 is a first schematic structural view of an axial flow blower in an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an axial flow air supply device in an air conditioner according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a blade of an axial flow blower in an air conditioner according to an embodiment of the present invention;

fig. 5 is a front view of an axial flow air supply device in an air conditioner according to an embodiment of the present invention;

FIG. 6 isbase:Sub>A sectional view taken along line A-A of FIG. 5;

fig. 7 is a first schematic cross-sectional view at a blade root section of an axial flow fan device in an air conditioner according to an embodiment of the present invention;

FIG. 8 is a schematic cross-sectional view of a blade tip section of an embodiment of an axial flow blower in an air conditioner according to an embodiment of the present invention;

FIG. 9 is a derived graph of a blade and root section of an axial flow blower in an air conditioner according to an embodiment of the present invention;

FIG. 10 is a graph showing a thickness distribution at a blade root section of an axial flow fan device in an air conditioner according to an embodiment of the present invention;

fig. 11 is a power comparison graph of the blade of the axial flow blower in the air conditioner according to the embodiment of the present invention and the conventional blade.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "central," "upper," "lower," "front," "back," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientations and positional relationships shown in the figures, and are used for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered limiting.

In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The present embodiment provides an air conditioner that performs a cooling and heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The cooling and heating cycle includes a series of processes involving compression, condensation, expansion, and evaporation to cool or heat an indoor space.

The low-temperature and low-pressure refrigerant enters the compressor, the compressor compresses the refrigerant gas in a high-temperature and high-pressure state, and the compressed refrigerant gas is discharged. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the high-temperature and high-pressure liquid-phase refrigerant condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a refrigerating effect by heat exchange with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

An outdoor unit of an air conditioner includes a compressor, an outdoor heat exchanger, and an outdoor fan, an indoor unit of an air conditioner includes an indoor heat exchanger and an indoor fan, and a throttling device (e.g., a capillary tube or an electronic expansion valve) may be provided in the indoor unit or the outdoor unit.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner performs a heating mode when the indoor heat exchanger serves as a condenser, and performs a cooling mode when the indoor heat exchanger serves as an evaporator.

The indoor heat exchanger and the outdoor heat exchanger are switched to be used as a condenser or an evaporator, a four-way valve is generally adopted, and specific reference is made to the arrangement of a conventional air conditioner, which is not described herein again.

The refrigeration working principle of the air conditioner is as follows: the indoor heat exchanger (in the indoor unit, the evaporator at the moment) is in a low-pressure state, liquid refrigerant in the indoor heat exchanger evaporates and absorbs heat rapidly, air blown out by the indoor fan is cooled by the indoor heat exchanger and then becomes cold air to be blown into a room, the evaporated and vaporized refrigerant is pressurized by the compressor and then is condensed into liquid state in the outdoor heat exchanger (in the outdoor unit, the condenser at the moment), heat is released, and the heat is dissipated into the atmosphere through the outdoor fan, so that the refrigeration effect is achieved by circulation.

The heating working principle of the air conditioner is as follows: the gaseous refrigerant is pressurized by the compressor to become high-temperature and high-pressure gas, and the high-temperature and high-pressure gas enters the indoor heat exchanger (the condenser at the moment), is condensed, liquefied and released heat to become liquid, and simultaneously heats indoor air, so that the aim of increasing the indoor temperature is fulfilled. The liquid refrigerant is decompressed by the throttling device, enters the outdoor heat exchanger (an evaporator at the moment), is evaporated, vaporized and absorbs heat to form gas, absorbs heat of outdoor air (the outdoor air becomes cooler) at the same time, becomes a gaseous refrigerant, and enters the compressor again to start the next cycle.

The indoor unit and/or the outdoor unit of the air conditioner in this embodiment includes: the air conditioner comprises a shell 100, wherein an air inlet part and an air outlet part are formed in the shell 100;

a heat exchanger disposed in the housing 100 to exchange heat with the air flow in the housing 100;

and the axial flow fan is arranged between the heat exchanger and the air outlet part and used for sucking the airflow flowing through the heat exchanger and then discharging the airflow from the air outlet part.

The air inlet part is an air inlet which is arranged on the shell 100 and is convenient for sucking air flow into the shell 100;

the air outlet part is an air outlet which is arranged on one side opposite to the air inlet part and is convenient for discharging air flow.

Axial-flow air supply device 200 is an axial-flow air supply fan, and includes: a hub 210;

a plurality of blades 220 arranged circumferentially along the hub 210. The plurality of blades 220 are arranged spirally in a circumferential direction of the hub 210.

The axial flow air supply device 200 is mainly used for sucking air flow from the air inlet part, blowing the air flow onto the heat exchanger, and sending the air flow subjected to heat exchange of the heat exchanger outwards.

The blades 220 are formed with suction surfaces 260, and when the axial flow blower 200 is used, airflow is sucked from the suction surfaces 260, and then is pushed out to be blown out after being worked by the pressure surfaces 230.

That is, the pressure surface 230 is formed on the blade 220, and when it is arranged, the suction surface 260 and the pressure surface 230 of the blade 220 are respectively arranged at both side positions of the blade 220.

The blade 220 includes:

a plurality of convex parts 241 and a plurality of concave parts 242 are formed on the suction surface 260 corresponding to the blade root section 240, and the convex parts 241 and the concave parts 242 are alternately arranged in sequence;

a tip section 250, which is a straight section, and the junction of the tip section 250 and the root section 240 is connected in a smooth transition.

In the air conditioner in the embodiment, when the blade 220 is disposed, the blade root section 240 of the blade 220 is disposed in a structure in which the protruding portion 241 and the recessed portion 242 are matched, and since the protruding portion 241 is outwardly protruded relative to the suction surface 260 side of the blade 220, the thickness of the blade root of the blade 220 is increased, and the strength of the blade root is enhanced.

Moreover, the structural arrangement mode of the blade root section 240 is that the concave parts 242 are arranged between the convex parts 241, so that compared with the existing mode that the thickness of the blade root section 240 of the blade 220 is directly thickened, the weight of the whole blade 220 is reduced, the weight reduction of the blade 220 is realized, and the lightweight arrangement of the blade 220 and the whole axial flow air supply device 200 is realized on the basis of ensuring the strength of the whole blade 220;

in addition, the concave parts 242 formed between the convex parts 241 enable a plurality of concave groove-like structures to be correspondingly formed on the suction surface 260 side of the blade 220, and the plurality of concave parts 242 can also reduce the frictional resistance on the surface of the blade 220 and improve the fan efficiency.

Blade 220 of axial flow air supply arrangement 200 of air conditioner in this embodiment arranges blade root section 240 and blade top section 250 into the cooperation of unsmooth complex wave type structure and flat section structure, setting up through the radius is little, the suction surface 260 side wave type of the blade root department that the wind speed is low can play the effect of strengthening blade 220 intensity and reducing the windage, and simultaneously, the radius is big, blade top section 250 department that the wind speed is high then adopts the flat straight section structure of slice formula, can reduce the resistance, the noise reduction, under axial flow air supply arrangement 200 blade 220 intensity prerequisite has been guaranteed, the whole effect that reduces windage and noise reduction that has realized, whole axial flow air supply arrangement 200's performance has been improved.

In some embodiments of the present application, the protrusion 241 and the recess 242 of the blade root section 240 are disposed at the suction surface 260 side of the blade 220, when the axial flow blower 200 is installed in an outdoor unit, it may be limited by an installation space, and may be assembled in a narrow installation area, because the suction surface 260 side is mainly used to suck the airflow from various directions, and the suction airflow has no directionality, and is in any direction, therefore, the arrangement of the protrusion 241 and the recess 242 on the suction surface 260 side does not affect the suction performance, and further does not affect the use performance of the whole air conditioner.

If the protruding portion 241 and the recessed portion 242 are disposed on the pressure surface 230 side, because the pressure surface 230 is a working surface for pushing the airflow outward, the pressure surface has directionality, and if the axial flow air supply device 200 is installed in a narrow region, at this time, the protruding portion 241 on the pressure surface 230 side can block the airflow to some extent, so that the airflow is opened by diverging, so that the outlet air is not blown outward along a certain direction, and linearity of the outlet air is affected.

Of course, if the entire axial flow fan device 200 is installed in a relatively open area, the above problem does not occur.

In order to avoid the influence on the performance of the whole air conditioner when the axial flow air supply device 200 is installed at a narrow area position, a structure of a convex portion 241 and a concave portion 242 is provided on the suction surface 260 side.

In some embodiments of the present application, the convex portions 241 and the concave portions 242 are also disposed on the pressure surface 230, and a plurality of convex portions 241 and a plurality of concave portions 242 are alternately disposed in sequence.

That is, when arranging, the convex portion 241 and the concave portion 242 may be arranged at the same time on the pressure surface 230 side of the blade 220 to achieve a better effect of enhancing the strength of the root section 240.

In some embodiments of the present application, the vane 220 includes a vane leading edge 270 and a vane trailing edge 280, the height of the protrusion 241 is gradually increased along the direction from the vane trailing edge 280 to the vane leading edge 270, and the height of the recess 242 is gradually increased along the direction from the vane trailing edge 280 to the vane leading edge 270.

That is, in the direction from the blade leading edge 270 to the blade trailing edge 280, the height of the projecting portion 241 on the blade leading edge 270 side is larger, the thickness of the blade 220 is larger, and the thickness of the projecting portion 241 on the blade trailing edge 280 side is smaller, and the thickness of the blade 220 is smaller.

In some embodiments of the present application, the root section 240 includes a blade root body section and a projection 241 projecting from the blade root body section and a recess 242 concavely formed from the blade root body section.

The thickness of the blade base section tapers in a corresponding thickness in a direction from the blade leading edge 270 to the blade trailing edge 280.

By arranging the blade 220 such that the thickness of the blade front edge 270 is large, the thickness of the convex portion 241 on the blade front edge 270 side is large, and the thickness of the blade tail edge 280 and the thickness of the convex portion 241 on the blade tail edge 280 can be small, the blade front edge 270 on the front side can be suitable for airflow impact at various angles, the airflow resistance is reduced, and the efficient working condition range is increased.

Moreover, the blade trailing edge 280 is thinned, so that the formation of falling vortexes at the blade trailing edge 280 can be reduced, and the effect of reducing noise is achieved.

In some embodiments of the present application, the height reduction of the protrusion 241 near the leading edge 270 is greater than the height reduction of the protrusion 241 near the trailing edge 280, and the height reduction of the recess 242 near the leading edge 270 is greater than the height reduction of the recess 242 near the trailing edge 280.

That is, when setting, the height of the convex portion 241 on the blade leading edge 270 side is decreased by a larger amount than the height of the convex portion 241 on the blade trailing edge 280 side, so that the thickness of the blade 220 closer to the blade trailing edge 280 becomes smaller and tends to be uniform, thereby reducing the generation of shedding vortex at the blade trailing edge 280 and reducing noise.

In some embodiments of the present application, the height decrease of the protrusion 241 and the recess 242 gradually decreases in a direction from the blade leading edge 270 to the blade trailing edge 280.

In some embodiments of the present application, the thickness of the blade 220 at each cross section corresponding to the blade tip section 250 is the same along the direction from the blade leading edge 270 to the blade trailing edge 280, that is, when the thickness is set, the blade tip section 250 is set to be a thin flat section with two smooth sides, and the smooth thin-sheet flat section structure at the blade tip with high wind speed can reduce the resistance and reduce the noise.

In some embodiments of the present application, the thickness of the blade 220 corresponding to the cross section of the tip section 250 gradually increases along the direction from the leading edge 270 to the trailing edge 280.

That is, during the setting, the tip section 250 of the blade 220 may be set to have a gradually-varying thickness tip section 250 structure with a larger thickness near the leading edge 270 of the blade and a smaller thickness near the trailing edge 280 of the blade, so that the effect of increasing the working condition range can be achieved through the thicker leading edge 270 of the blade.

In some embodiments of the present application, the thickness value of tip section 250 is less than the corresponding thickness value of blade 220 at any cross-sectional location of root section 240.

In some embodiments of the present application, the protrusions 241 and the recesses 242 are configured to:

the convex portion 241 is an arc-shaped protrusion formed by protruding outwards from the suction surface 260 of the blade 220, the concave portion 242 is an arc-shaped concave groove formed by recessing inwards from the suction surface 260 of the blade 220, and the arc-shaped protrusion is connected with the arc-shaped concave groove in a smooth transition mode.

The smoothly connected convex portion 241 and concave portion 242 are formed by the arc-shaped convex and concave grooves.

In some embodiments of the present application, the protrusions 241 and the recesses 242 are configured as:

the convex portion 241 is a rectangular protrusion formed by protruding outwards from the suction surface 260 of the blade 220, the concave portion 242 is a rectangular concave groove formed by recessing inwards from the suction surface 260 of the blade 220, and the rectangular convex portion 241 and the rectangular concave portion 242 are connected in a smooth transition mode.

The convex portion 241 and the concave portion 242 may be configured as a rectangular convex, rectangular concave groove structure.

Of course, the convex portion 241 and the concave portion 242 with other shapes may be matched, and are not limited in particular.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An air conditioner comprising: the air conditioner comprises a shell, wherein an air inlet part and an air outlet part are formed in the shell;

the axial flow air supply device is arranged between the heat exchanger and the air outlet part and is used for sucking the airflow flowing through the heat exchanger and then discharging the airflow from the air outlet part,

the axial flow air supply device comprises: a hub;

2. The air conditioner according to claim 1, wherein said blade further comprises a pressure surface disposed on both sides of said blade opposite to said suction surface, said protrusions and said depressions being disposed on said pressure surface, and a plurality of said protrusions and a plurality of said depressions being alternately disposed in sequence.

3. The air conditioner as claimed in claim 1, wherein said vane includes a vane leading edge and a vane trailing edge, a height of said convex portion is gradually increased along a direction from said vane trailing edge to said vane leading edge, and a height of said concave portion is gradually increased along a direction from said vane trailing edge to said vane leading edge.

4. The air conditioner according to claim 3, wherein a height decrease value of said convex portion near a blade leading edge side is larger than a height decrease value of said convex portion near a blade trailing edge side, and a height decrease value of said concave portion near a blade leading edge side is larger than a height decrease value of said concave portion near a blade trailing edge side.

5. The air conditioner as claimed in any one of claims 1 to 4, wherein said blade includes a blade leading edge and a blade trailing edge, and said root section includes a root body section, and a thickness of said root body section becomes gradually smaller in a direction from said blade leading edge to said blade trailing edge.

6. The air conditioner as claimed in claim 3, wherein the thickness values of the blades corresponding to the blade tip sections are the same in a direction from the leading edge of the blade to the trailing edge of the blade.

7. The air conditioner as claimed in claim 3, wherein a thickness of the blade is gradually reduced in a cross section of the blade tip section in a direction from the leading edge of the blade to the trailing edge of the blade.

8. The air conditioner of claim 6, wherein said tip section thickness value is less than a corresponding blade thickness value at any cross-sectional location of said blade root section.

9. The air conditioner as claimed in claim 5, wherein said protrusion is an arc-shaped protrusion protruding outward from said blade root section, said recess is an arc-shaped recess recessed inward from said blade root section, and said arc-shaped protrusion and said arc-shaped recess are connected in smooth transition.

10. The air conditioner as claimed in claim 5, wherein the protrusion is a rectangular protrusion protruding outward from the blade root section, the recess is a rectangular recess recessed inward from the blade root section, and the rectangular protrusion and the rectangular recess are connected in a smooth transition.