CN214788078U - Outdoor machine of air conditioner - Google Patents
Outdoor machine of air conditioner Download PDFInfo
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- CN214788078U CN214788078U CN202121308149.8U CN202121308149U CN214788078U CN 214788078 U CN214788078 U CN 214788078U CN 202121308149 U CN202121308149 U CN 202121308149U CN 214788078 U CN214788078 U CN 214788078U
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- blade top
- guide ring
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Abstract
The utility model provides an air condensing units, include: the outdoor air inlet and the outdoor air outlet are communicated to form an outdoor air duct; the outdoor fan is arranged in the outdoor air channel and comprises a fan body and a fan cover; a hub; the blade is arranged on the side circumferential surface of the hub, the contour line of the blade top of the blade is a Bezier curve, the blade top of the blade is provided with a blade top front edge and a blade top tail edge, the curvature of the contour line of the blade top front edge is a positive value, and the outer diameter of the blade top front edge is larger than that of the blade top tail edge; the contour line of the blade top of the blade is a Bezier curve, the curvature of the contour line of the front edge of the blade top is a positive value, and the outer diameter of the front edge of the blade top is larger than the outer diameter of the tail edge of the blade top, so that the outer diameter of the front edge of the blade top can be effectively increased, the blade with a larger difference between the outer diameter of the front edge of the blade and the outer diameter of the tail edge of the blade can be obtained, the airflow leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the airflow noise is reduced.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, especially, relate to an air condensing units.
Background
The existing outdoor unit of the air conditioner is generally provided with an outdoor fan, blades of the outdoor fan are generally designed to be that the outer diameter of the front edge of each blade is equal to that of the rear edge of each blade, or the blades are cut to the tail end of the tail edge of each blade at a position in the middle of the blade top, but the difference between the outer diameter of the front edge of each blade and the outer diameter of the tail edge of each blade is not large due to the cutting mode, so that the airflow leakage of the outdoor fan is serious, the air volume of the outdoor fan is reduced, and the airflow noise of the outdoor fan is increased.
Disclosure of Invention
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For this purpose,
according to an embodiment of the present disclosure, there is provided an outdoor unit of an air conditioner, including:
the outdoor air inlet and the outdoor air outlet are communicated to form an outdoor air duct;
the outdoor fan is arranged in the outdoor air channel and comprises a fan body and a fan cover;
a hub;
the blade is arranged on the side circumferential surface of the hub, the contour line of the blade top of the blade is a Bezier curve, the blade top of the blade is provided with a blade top front edge and a blade top tail edge, the curvature of the contour line of the blade top front edge is a positive value, and the outer diameter of the blade top front edge is larger than that of the blade top tail edge.
The contour line of the blade top is a Bezier curve, the curvature of the contour line of the blade top front edge is a positive value, and the outer diameter of the blade top front edge is larger than that of the blade top tail edge, so that the outer diameter of the blade top front edge can be effectively increased, the blade with a larger difference between the outer diameter of the blade front edge and the outer diameter of the blade tail edge can be obtained, the airflow leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the airflow noise is reduced.
According to the embodiment of the disclosure, the blade tip is further provided with a blade tip connecting section connected to the blade tip front edge and the blade tip tail edge, and the curvature of the blade tip connecting section is a negative value or 0, so that a blade with a large difference between the outer diameter of the blade front edge and the outer diameter of the blade tail edge can be obtained, airflow leakage of an outdoor fan can be reduced, the air volume of the outdoor fan is increased, and airflow noise is reduced.
According to the embodiment of the disclosure, the curvature of the contour line of the blade tip trailing edge is a negative value or 0, so that the blade with a larger difference between the outer diameter of the blade leading edge and the outer diameter of the blade trailing edge can be obtained, the air flow leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the air flow noise is reduced.
According to the embodiment of the disclosure, the outdoor air conditioner further comprises an air guide ring arranged at the position of the outdoor air outlet, and the outdoor fan is arranged in the air guide ring, so that the air guide ring can perform an air guide function.
According to the embodiment of the disclosure, the contour line of the inner surface of the air guide ring along the axial direction of the air guide ring is a straight line or a curve protruding towards the inner side of the air guide ring, and the contour line of the inner surface of the air guide ring along the axial direction of the air guide ring is a curve protruding towards the inner side of the air guide ring, so that air inlet and air outlet are facilitated, and the air guide effect is improved.
According to the embodiment of the disclosure, the interval between the blade top trailing edge at the air guide ring and the inner surface of the air guide ring is constant, so that the blade trailing edge is adapted to the air guide ring, the air leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the air flow noise is reduced.
According to the embodiment of the disclosure, the blade top trailing edge blade tip is recessed at the front end of the wind guide ring or is flush with the front end of the wind guide ring.
According to the embodiment of the disclosure, the blade tip of the blade top front edge is concave or convex at the rear end of the air guide ring or is flush with the rear end of the air guide ring, so that a larger space can be provided, and the increase of the outer diameter of the blade top front edge is facilitated.
According to the embodiment of the disclosure, the maximum outer diameter of the blade top front edge can be larger than or equal to or smaller than the inner diameter of the rear end of the air guide ring, and when the maximum outer diameter of the blade top front edge is larger than or equal to the inner diameter of the rear end of the air guide ring, the blade tip of the blade top front edge protrudes out of the rear end of the air guide ring, so that the adjustment range of the outer diameter of the blade top front edge is larger, the outer diameter of the blade top front edge is favorably increased, the air leakage of an outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the air flow noise is reduced.
According to an embodiment of the present disclosure, the outdoor fan is an axial fan.
Drawings
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an exploded view of a partial structure of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural view of an outdoor fan blade according to an embodiment of the present disclosure;
FIG. 3 is a side view of an outdoor fan blade according to an embodiment of the present disclosure;
fig. 4 is a simulated cloud view of an outdoor fan, fig. 4(a) is a simulated cloud view of an outdoor fan according to the present patent, and fig. 4(b) is a simulated cloud view of a related art outdoor fan.
In the above figures: a blade 1; blade tip 11; the tip leading edge 111; the tip trailing edge 112; a tip connection section 113; a blade root 12; a housing 2; an outdoor air outlet 21; a wind guide ring 3; an outdoor shroud 4.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. 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 liquid-phase refrigerant in a high-temperature and high-pressure state 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 cooling effect by heat-exchanging 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.
The air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner outdoor unit is a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the air conditioner indoor unit or the air conditioner outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.
The present invention provides an outdoor unit of an air conditioner, which is described below with reference to fig. 1 to 4, wherein fig. 1 is a partial structure explosion diagram of the outdoor unit of the air conditioner.
Referring to fig. 1, the outdoor unit of the air conditioner includes a casing 2 forming a main frame of the outdoor unit of the air conditioner. Specifically, the outdoor unit of the air conditioner comprises a front plate, a rear plate, a left side plate, a right side plate, a top plate and a bottom plate.
An outdoor air inlet and an outdoor air outlet 21 are formed on the machine shell, and the outdoor air inlet and the outdoor air outlet are communicated to form an outdoor air duct. Generally, the outdoor air inlet is disposed on the rear panel, and the outdoor air outlet is disposed on the front panel.
The outdoor unit of the air conditioner also comprises an outdoor heat exchanger which is arranged in the outdoor air channel and used for exchanging heat with the air in the casing. The outdoor heat exchanger can be a plate heat exchanger, and can be an L-shaped heat exchanger under the condition of reducing the size of the outdoor unit of the air conditioner as much as possible in order to increase the heat exchange area of the outdoor heat exchanger, wherein the outdoor air inlet can also be arranged on the left side plate and the right side plate of the shell.
The outdoor unit of the air conditioner further comprises an outdoor fan, the outdoor fan is arranged in the outdoor air channel and located on one side, close to the outdoor air outlet, of the outdoor heat exchanger and used for sending air subjected to heat exchange of the outdoor heat exchanger out of the shell through the outdoor air outlet, the outdoor fan comprises an outdoor fan and an outdoor motor, an output shaft of the outdoor motor is connected with the outdoor fan, the outdoor motor drives the outdoor air to rotate, and the outdoor fan can be an axial flow fan.
Referring to fig. 2 and 3, the outdoor fan includes a hub and blades 1, the blades 1 being provided on a side circumferential surface of the hub, wherein the hub may be cylindrical, and the blades are uniformly arranged on the hub, wherein the number of the blades may be three.
The blade has a blade tip 11 and a blade root 12, by which the blade is connected to the hub. The blade tip has a tip leading edge, a tip trailing edge, and a tip connection section 113 connected between the tip leading edge 111 and the tip trailing edge 112.
The blade of the existing outdoor fan is generally designed to be that the outer diameter of the front edge of the blade is equal to or slightly different from the outer diameter of the rear edge of the blade, but the airflow of the outdoor fan is seriously leaked, the air volume of the outdoor fan is reduced, and the airflow noise of the outdoor fan is increased.
Therefore, the contour line of the blade top of the outdoor fan of the air conditioner outdoor unit is a Bezier curve, the outer diameter of the blade top front edge is larger than that of the blade top tail edge, the curvature of the contour line of the blade top front edge is a positive value, the curvature of the contour line of the blade top connecting section is a negative value or 0, and the curvature of the contour line of the blade top tail edge is a negative value or 0, so that the outer diameter of the blade top front edge can be effectively increased, the blade with a larger difference between the outer diameter of the blade front edge and the outer diameter of the blade tail edge is obtained, the air flow leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the air flow noise is reduced.
The contour line of the blade top of the blade is a Bezier curve, the curvature of the contour line of the front edge of the blade top is a positive value, and the outer diameter of the front edge of the blade top is larger than that of the tail edge of the blade top, so that the outer diameter of the front edge of the blade top can be effectively increased, the blade with a larger difference between the outer diameter of the front edge of the blade and the outer diameter of the tail edge of the blade is obtained, the airflow leakage of the outdoor fan can be reduced, the air volume of the outdoor fan is increased, and the airflow noise is reduced.
The outdoor unit of the air conditioner further comprises an air guide ring 3, the air guide ring is arranged at the position of the outdoor air outlet, and the outdoor fan is arranged in the air guide ring, so that the air guide ring can perform an air guide function. The inner surface of the wind guide ring is a straight line or an arc line protruding towards the inner side of the wind guide ring along the axial contour line of the wind guide ring, and the inner surface of the wind guide ring is a curve protruding towards the inner side of the wind guide ring along the axial contour line of the wind guide ring, so that wind inlet and wind outlet are facilitated, and the wind guide effect is improved.
The interval between the blade top trailing edge at the air guide ring and the inner surface of the air guide ring is constant, so that the blade trailing edge is adaptive to the air guide ring, the air flow leakage of the outdoor fan can be reduced, the air quantity of the outdoor fan is increased, and the air flow noise is reduced.
The outer end of the tail edge of the blade top is concave at the front end of the air guide ring or is flush with the front end of the air guide ring. The outer end of the front edge of the blade top is concave or convex to the rear end of the air guide ring or is flush with the rear end of the air guide ring, so that a larger space can be provided, and the outer diameter of the front edge of the blade top is increased. The maximum outer diameter of the blade top front edge can be larger than or equal to or smaller than the inner diameter of the rear end of the air guide ring, when the maximum outer diameter of the blade top front edge is larger than or equal to the inner diameter of the rear end of the air guide ring, the outer end of the blade top front edge protrudes out of the rear end of the air guide ring, so that the adjusting range of the outer diameter of the blade top front edge is large, the outer diameter of the blade top front edge is favorably increased, airflow leakage of an outdoor fan can be reduced, the air volume of the outdoor fan is increased, and airflow noise is reduced.
The air guide ring is connected to the front plate of the casing, the outdoor unit of the air conditioner can also comprise an outdoor shield 4, the outdoor shield is connected to the front plate of the casing, and the outdoor shield is arranged at the position of the outdoor air outlet and covers the front side of the air guide ring. The outdoor shroud includes a grill for allowing the wind blown from the outdoor fan to be blown out of the outdoor unit casing.
The outdoor fan and the outdoor fan with the same outer diameter of the front edge of the blade top and the same outer diameter of the rear edge of the blade top in the patent are subjected to simulation analysis, wherein a pressure cloud chart of the downstream outlet section of the outdoor fan is selected for illustration, wherein the size of a low-pressure area range in the cloud chart is used for reflecting the loss, and the loss is larger when the low-pressure area range is larger. The specific simulation result is shown in fig. 4, and fig. 4 shows that the low-pressure area range at the blade tip of the outdoor fan in the patent is smaller, which indicates that the blade tip leakage loss of the outdoor fan in the patent is lower and the fan efficiency is higher.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally 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 invention can be understood in specific cases to those skilled in the art.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An outdoor unit of an air conditioner, comprising:
the outdoor air inlet and the outdoor air outlet are communicated to form an outdoor air duct;
the outdoor fan is arranged in the outdoor air channel and comprises a fan body and a fan cover;
a hub;
the blade is arranged on the side circumferential surface of the hub, the contour line of the blade top of the blade is a Bezier curve, the blade top of the blade is provided with a blade top front edge and a blade top tail edge, the curvature of the contour line of the blade top front edge is a positive value, and the outer diameter of the blade top front edge is larger than that of the blade top tail edge.
2. The outdoor unit of claim 1, wherein the vane tip further has a tip connection section connected to the leading edge of the tip and the trailing edge of the tip, and the curvature of the tip connection section is a negative value or 0.
3. The outdoor unit of claim 1 or 2, wherein the curvature of the contour line of the trailing edge of the vane top is a negative value or 0.
4. The outdoor unit of claim 3, further comprising an air guide ring disposed at the outdoor air outlet, wherein the outdoor fan is disposed in the air guide ring.
5. The outdoor unit of claim 4, wherein a space between a trailing edge of a blade tip at the air guide ring and an inner surface of the air guide ring is constant.
6. The outdoor unit of claim 5, wherein a contour line of the inner surface of the air-guide ring in the axial direction of the air-guide ring is a straight line or a curved line protruding inward of the air-guide ring.
7. The outdoor unit of claim 4, wherein an outer end of the trailing edge of the vane top is recessed from or flush with the front end of the air guide ring.
8. The outdoor unit of claim 4, wherein an outer end of the leading edge of the blade top is recessed or protruded from or flush with the rear end of the air-guide ring.
9. The outdoor unit of claim 8, wherein the maximum outer diameter of the leading edge of the blade top is greater than or equal to or less than the inner diameter of the rear end of the air-guiding ring, and when the maximum outer diameter of the leading edge of the blade top is greater than or equal to the inner diameter of the rear end of the air-guiding ring, the outer end of the leading edge of the blade top protrudes beyond the rear end of the air-guiding ring.
10. The outdoor unit of claim 1, wherein the outdoor fan is an axial flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308149.8U CN214788078U (en) | 2021-06-09 | 2021-06-09 | Outdoor machine of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308149.8U CN214788078U (en) | 2021-06-09 | 2021-06-09 | Outdoor machine of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214788078U true CN214788078U (en) | 2021-11-19 |
Family
ID=78712425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121308149.8U Active CN214788078U (en) | 2021-06-09 | 2021-06-09 | Outdoor machine of air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214788078U (en) |
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2021
- 2021-06-09 CN CN202121308149.8U patent/CN214788078U/en active Active
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