Air conditioner outdoor unit fan blade and air conditioner

Abstract

The invention discloses an air conditioner outdoor unit fan blade and an air conditioner, and relates to the technical field of air conditioners. The air conditioner outdoor unit fan blade comprises a center shaft and blades. The blades are in a strip shape and extend in a convolution shape, the two ends of each blade are arranged at intervals and connected to the circumferential face of the center shaft, the blades and the center shaft jointly define an air guide cavity, each blade is provided with a front edge and a tail edge in an enclosing mode, the positions, close to the center shaft, of the tail edges are provided with first grooves, and the first grooves communicate with the air guide cavity. Compared with the prior art, the air conditioner outdoor unit fan blade provided by the invention adopts the blades which extend in the rotary shape and of which the two ends are connected to the circumferential surface of the central shaft and the tail edge provided with the first groove, so that the weight of the air conditioner outdoor unit fan blade can be reduced while the air outlet effect is ensured, and the energy consumption of the air conditioner outdoor unit fan blade in the operation process is reduced; operation cost is reduced, and fan blade efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and particularly relates to an outdoor unit airfoil of an air conditioner and an air conditioner. Background Art

[0002] At present, with the increasing improvement of living standards, air conditioners have become an indispensable household appliance in thousands of households. An air conditioner includes an indoor unit and an outdoor unit. Among them, the indoor unit is installed indoors, and the outdoor unit is installed outdoors. The indoor unit and the outdoor unit work together to achieve the function of regulating the indoor temperature. The outdoor unit generally dissipates heat through the outdoor unit airfoil. However, the current outdoor unit airfoil of the air conditioner is relatively heavy, has a large energy consumption during operation, a high operating cost, and a low airfoil efficiency. Summary of the Invention

[0003] The problem solved by the present invention is how to reduce the weight of the outdoor unit airfoil of the air conditioner while ensuring the air outlet effect, reduce its energy consumption during operation, reduce the operating cost, and improve the airfoil efficiency.

[0004] To solve the above problems, the technical solution of the present invention is realized as follows:

[0005] In a first aspect, the present invention provides an outdoor unit airfoil of an air conditioner, including a central axis and blades. The blades are strip-shaped and extend in a swirling shape. The two ends of the blades are spaced apart and are both connected to the circumferential surface of the central axis. The blades and the central axis together enclose a wind guiding cavity. The blades are provided with a leading edge and a trailing edge opposite to each other. A first groove is formed at a position of the trailing edge close to the central axis, and the first groove communicates with the wind guiding cavity. Compared with the prior art, the outdoor unit airfoil provided by the present invention can reduce the weight of the outdoor unit airfoil of the air conditioner while ensuring the air outlet effect, reduce its energy consumption during operation, reduce the operating cost, and improve the airfoil efficiency due to the use of the blades extending in a swirling shape and both ends being connected to the circumferential surface of the central axis and the trailing edge provided with the first groove.

[0006] Further, the number of the first grooves is multiple, and the multiple first grooves are divided into two groups. Each group of first grooves is arranged at one end of the blade, and the two groups of first grooves are oppositely arranged on both sides of the wind guiding cavity. The two groups of first grooves work together to further reduce the weight of the blade, reduce the energy consumption, and improve the airfoil efficiency.

[0007] Further, the number of each group of first grooves is multiple, and the multiple first grooves in each group are arranged at equal intervals. The multiple first grooves work together to increase the removed volume of the blade, further reduce the weight of the blade, reduce the energy consumption during the operation of the outdoor unit airfoil of the air conditioner, improve the airfoil efficiency, and at the same time ensure the structural strength and air outlet effect of the blade, and improve the aesthetics.

[0008] Further, the distance between two adjacent first grooves in each group ranges from 15 mm to 20 mm. A reasonable distance between two adjacent first grooves in each group can ensure the strength of the blade and avoid affecting the air outlet effect.

[0009] Further, the opening length of the first groove ranges from 22 mm to 27 mm; and / or, the depth of the first groove ranges from 10 mm to 15 mm. Reasonable opening length and depth of the first groove can minimize the weight of the blade while ensuring the structural strength of the blade, reduce the energy consumption during the operation of the outdoor unit fan of the air conditioner, reduce the operating cost, and improve the efficiency of the fan.

[0010] Further, a second groove is formed at a position of the leading edge close to the central axis. The second groove communicates with the air guiding cavity, and the size of the second groove is smaller than that of the first groove. The second groove is used to divide the larger eddy current formed during the air outlet process into smaller eddy currents to reduce the wind noise. The second groove is also used to reduce the weight of the blade, thereby reducing the weight of the entire outdoor unit fan of the air conditioner, reducing the energy consumption during its operation, reducing the operating cost, and improving the efficiency of the fan.

[0011] Further, the number of the second grooves is multiple, and the number of the second grooves is greater than that of the first grooves. The multiple second grooves are divided into two groups, and each group of second grooves is arranged at one end of the blade. The two groups of second grooves are oppositely arranged on both sides of the air guiding cavity. The two groups of second grooves work together to further reduce the wind noise and reduce the weight of the blade.

[0012] Further, the number of the second grooves in each group is multiple, and the multiple second grooves in each group are arranged at equal intervals. The distance between two adjacent second grooves in each group ranges from 6 mm to 10 mm. A reasonable distance between two adjacent second grooves in each group can ensure the strength of the blade and avoid affecting the air outlet effect.

[0013] Further, the opening length of the second groove ranges from 9 mm to 13 mm; and / or, the depth of the second groove ranges from 5 mm to 9 mm. Reasonable opening length and depth of the second groove can maximize the eddy current division effect while ensuring the structural strength of the blade, reduce the wind noise, and minimize the weight of the blade, reduce the energy consumption, reduce the operating cost, and improve the efficiency of the fan.

[0014] In a second aspect, the present invention provides an air conditioner, which includes a driving motor and the above-mentioned air conditioner outdoor unit fan blade. The air conditioner outdoor unit fan blade includes a central axis and blades. The driving motor is connected to the central axis. The blades are strip-shaped and extend in a swirling shape. The two ends of the blades are arranged at intervals and are both connected to the circumferential surface of the central axis. The blades and the central axis together enclose an air guiding cavity. The blades are provided with a leading edge and a trailing edge relatively. A first groove is formed at a position of the trailing edge close to the central axis, and the first groove communicates with the air guiding cavity. The air conditioner can reduce the weight of the air conditioner outdoor unit fan blade while ensuring the air outlet effect, reduce its energy consumption during operation, reduce the operation cost, and improve the fan blade efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the air conditioner outdoor unit fan blade according to the first embodiment of the present invention;

[0016] Figure 2 is a mathematical model diagram of the air conditioner outdoor unit fan blade according to the first embodiment of the present invention;

[0017] Figure 3 is a schematic structural diagram of the air conditioner outdoor unit fan blade according to the second embodiment of the present invention;

[0018] Figure 4 is a mathematical model diagram of the air conditioner outdoor unit fan blade according to the second embodiment of the present invention.

[0019] DESCRIPTION OF THE REFERENCE NUMERALS:

[0020] 100 - air conditioner outdoor unit fan blade; 110 - central axis; 120 - blades; 121 - leading edge; 1211 - first leading edge; 1212 - second leading edge; 122 - trailing edge; 1221 - first trailing edge; 1222 - second trailing edge; 123 - first groove; 124 - first blade segment; 125 - second blade segment; 126 - second groove; 130 - air guiding cavity. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be given with reference to the accompanying drawings.

[0022] First Embodiment

[0023] Please refer to Figure 1 and Figure 2 , an embodiment of the present invention provides an air conditioner outdoor unit fan blade 100 for driving air flow. It can reduce the weight of the air conditioner outdoor unit fan blade 100 while ensuring the air outlet effect, reduce its energy consumption during operation, reduce the operation cost, and improve the fan blade efficiency.

[0024] It should be noted that the air conditioner outdoor unit fan blade 100 is applied to the air conditioner outdoor unit (not shown in the figure), the air conditioner outdoor unit is installed outdoors, and is connected to the air conditioner indoor unit (not shown in the figure), and the air conditioner outdoor unit and the air conditioner indoor unit work together to achieve the function of regulating the indoor temperature. The air conditioner outdoor unit includes a condenser (not shown in the figure), a drive motor (not shown in the figure) and a shell (not shown in the figure), wherein the condenser, the drive motor and the air conditioner outdoor unit fan blade 100 are all arranged in the shell, and the shell is used to shield and protect the condenser, the drive motor and the air conditioner outdoor unit fan blade 100. The drive motor is connected to the air conditioner outdoor unit fan blade 100 to drive the air conditioner outdoor unit fan blade 100 to rotate, and the position of the air conditioner outdoor unit fan blade 100 corresponds to the position of the condenser, and the condenser is used to exchange heat with the refrigerant. The air conditioner outdoor unit fan blade 100 can form a negative pressure during the rotation process to drive the air flow to form an outlet air flow, and the outlet air flow is used to air-cool the condenser to take away the heat of the condenser and ensure the normal operation of the condenser.

[0025] The air conditioner outdoor unit fan blade 100 includes a central shaft 110 and blades 120. The central shaft 110 is cylindrical, and the blades 120 are fixedly connected to the circumference of the central shaft 110. The central shaft 110 is used to drive the blades 120 to rotate, and the blades 120 can generate negative pressure during the rotation process to drive air flow. Specifically, the central shaft 110 is used to be connected to a drive motor, and the drive motor can drive the blades 120 to rotate through the central shaft 110.

[0026] It is worth noting that the blade 120 is in a strip shape. If the blade 120 is straightened, the entire blade 120 is in a rectangular strip shape. In the present embodiment, the blade 120 is extended in a spiral shape, and both ends of the blade 120 are connected to the circumference of the central axis 110. Specifically, the shape of the blade 120 is described in detail in a dynamic manner: one end of the blade 120 is connected to the circumference of the central axis 110 and extends in a direction away from the central axis 110. When the blade 120 extends to a certain length, the blade 120 twists back (the twisting angle is about 180 degrees) and extends in a direction close to the central axis 110 until the other end of the blade 120 is connected to the circumference of the central axis 110.

[0027] Furthermore, there are multiple blades 120, and the multiple blades 120 are arranged on the circumference of the central shaft 110 in a circular array with the axis of the central shaft 110 as the center of the circle. The multiple blades 120 work together to increase the air volume. In this embodiment, the number of blades 120 is three, and the three blades 120 are arranged on the circumference of the central shaft 110 in a circular array. The central shaft 110 can drive the three blades 120 to rotate at the same time, so that the air flows to form an air flow. However, it is not limited to this. In other embodiments, the number of blades 120 can be four or five, and the number of blades 120 is not specifically limited.

[0028] Specifically, the two ends of the blade 120 are spaced apart and are both connected to the circumferential surface of the central shaft 110. The blade 120 and the central shaft 110 together enclose an air guiding cavity 130 for air to pass through. During the rotation of the air conditioner outdoor unit blade 100 driven by the drive motor, the blade 120 agitates the air to form a negative pressure. During this process, the first part of the air passes through the gap between two adjacent blades 120, and the second part of the air passes through the air guiding cavity 130. Both parts of the air flow along the air outlet direction under the pressure of the blade 120. Compared with the prior art solution where the air conditioner outdoor unit fan can only drive the air to pass through the gap between two adjacent blades, in the present invention, the second part of the air passing through the air guiding cavity 130 can, on the one hand, increase the air output of the entire air conditioner outdoor unit blade 100, improve the blade efficiency, that is, improve the ability of the air conditioner outdoor unit blade 100 to convert mechanical energy into wind energy when rotating, and on the other hand, can play a noise reduction role after converging with the first part of the air, greatly reducing the wind noise.

[0029] It should be noted that the blade 120 is relatively provided with a leading edge 121 and a trailing edge 122. If the blade 120 is straightened, the leading edge 121 is one long side of the rectangular strip formed by the blade 120, and the trailing edge 122 is the other long side of the rectangular strip formed by the blade 120. During the operation of the air conditioner outdoor unit blade 100, the leading edge 121 first cuts the air, and the trailing edge 122 then cuts the air. Among them, the leading edge 121 is used to introduce the air into the air conditioner outdoor unit blade 100, and the trailing edge 122 is used to lead the formed air outlet flow outwards. The inventor's research found that the efficiency of the part of the blade 120 near the central shaft 110 in the area of the trailing edge 122 in doing work on the air outlet flow is relatively low, or even does not do work on the air outlet flow. In order to reduce the weight of the blade 120 while ensuring the strength and air outlet effect of the blade 120, the present invention cuts a groove at the position of the trailing edge 122 near the central shaft 110 to remove the inefficient work part on the blade 120.

[0030] Specifically, a first groove 123 is formed at the position of the trailing edge 122 near the central shaft 110. The first groove 123 is communicated with the air guiding cavity 130. The first groove 123 is used to remove the inefficient work part on the blade 120 to reduce the weight of the blade 120 while ensuring the air outlet effect, thereby reducing the weight of the entire air conditioner outdoor unit blade 100, reducing its energy consumption during operation, reducing the operation cost, and improving the blade efficiency, that is, improving the ability of the air conditioner outdoor unit blade 100 to convert mechanical energy into wind energy when rotating. In addition, the first groove 123 is arranged at the position of the trailing edge 122 near the central shaft 110. On the one hand, it can ensure the strength of the blade 120 and prevent the blade 120 from tearing due to the first groove 123 being opened at the torsional position, and on the other hand, it can ensure the air outlet effect of the blade 120 and will not affect the air output of the entire air conditioner outdoor unit blade 100.

[0031] Furthermore, the number of the first grooves 123 is multiple. The multiple first grooves 123 are divided into two groups. Each group of the first grooves 123 is arranged at one end of the blade 120. The two groups of the first grooves 123 are oppositely arranged on both sides of the air guiding cavity 130. The two groups of the first grooves 123 work together to further reduce the weight of the blade 120, reduce energy consumption, and improve the efficiency of the wind blade.

[0032] The blade 120 includes a first blade segment 124 and a second blade segment 125. Wherein, the first blade segment 124 is a section before the blade 120 is twisted, and the second blade segment 125 is a section after the blade 120 is twisted. The first blade segment 124 and the second blade segment 125 are arranged in sequence along the air outlet direction and are both connected to the central axis 110. That is, during the operation of the air conditioner outdoor unit wind blade 100, the air outlet airflow sequentially passes through the first blade segment 124 and the second blade segment 125. In this embodiment, the first blade segment 124 and the second blade segment 125 are integrally formed to improve the connection strength, realize the integration of the blade 120, and thus improve the stability of the blade 120 during the air outlet process.

[0033] Specifically, the leading edge 121 includes a first leading edge 1211 and a second leading edge 1212, and the trailing edge 122 includes a first trailing edge 1221 and a second trailing edge 1222. Wherein, the first leading edge 1211 and the first trailing edge 1221 are oppositely arranged on both sides of the first blade segment 124, and the second leading edge 1212 and the second trailing edge 1222 are oppositely arranged on both sides of the second blade segment 125. The first leading edge 1211 and the second leading edge 1212 are both on the same side of the blade 120, and the first trailing edge 1221 and the second trailing edge 1222 are both on the other side of the blade 120. The first group of the first grooves 123 is arranged on the first trailing edge 1221 of the first blade segment 124 and is close to the central axis 110 to remove the inefficient work part of the first blade segment 124 while ensuring the strength and air guiding effect of the first blade segment 124, reduce the weight of the first blade segment 124, reduce energy consumption, and improve the efficiency of the wind blade; the second group of the first grooves 123 is arranged on the second trailing edge 1222 of the second blade segment 125 and is close to the central axis 110 to remove the inefficient work part of the second blade segment 125 while ensuring the strength and air guiding effect of the second blade segment 125, reduce the weight of the second blade segment 125, reduce energy consumption, and improve the efficiency of the wind blade.

[0034] It should be noted that the number of the first grooves 123 in each group is multiple, and the multiple first grooves 123 work together to increase the removal volume of the blade 120, further reduce the weight of the blade 120, reduce the energy consumption during the operation of the outdoor unit fan blade 100 of the air conditioner, and improve the fan efficiency. In this embodiment, the number of the first grooves 123 in each group is two, but it is not limited thereto. In other embodiments, the number of the first grooves 123 in each group can be three or four, and the number of the first grooves 123 in each group is not specifically limited.

[0035] Furthermore, the multiple first grooves 123 in each group are equally spaced to ensure the structural strength and air outlet effect of the blade 120, and improve the aesthetics. Specifically, the spacing range between two adjacent first grooves 123 in each group is 15 mm to 20 mm. A reasonable spacing between two adjacent first grooves 123 in each group can ensure the strength of the blade 120 and avoid affecting the air outlet effect. In this embodiment, the spacing between two adjacent first grooves 123 in each group is 18 mm, but it is not limited thereto. In other embodiments, the spacing between two adjacent first grooves 123 in each group can be 15 mm or 20 mm, and the size of the spacing between two adjacent first grooves 123 in each group is not specifically limited. For the sake of easy understanding, the spacing between two adjacent first grooves 123 in each group is denoted as A.

[0036] Preferably, the opening length range of the first groove 123 is 22 mm to 27 mm. A reasonable opening length of the first groove 123 can minimize the weight of the blade 120 while ensuring the structural strength of the blade 120, reduce the energy consumption during the operation of the outdoor unit fan blade 100 of the air conditioner, reduce the operation cost, and improve the fan efficiency. In this embodiment, the opening length of the first groove 123 is 24 mm, but it is not limited thereto. In other embodiments, the opening length of the first groove 123 can be 22 mm or 27 mm, and the opening length of the first groove 123 is not specifically limited. For the sake of easy understanding, the opening length of the first groove 123 is denoted as B.

[0037] Preferably, the depth range of the first groove 123 is 10 mm to 15 mm. A reasonable depth of the first groove 123 can further reduce the weight of the blade 120 while ensuring the structural strength of the blade 120, reduce the energy consumption during the operation of the outdoor unit fan blade 100 of the air conditioner, reduce the operation cost, and improve the fan efficiency. In this embodiment, the depth of the first groove 123 is 13 mm, but it is not limited thereto. In other embodiments, the depth of the first groove 123 can be 10 mm or 15 mm, and the depth of the first groove 123 is not specifically limited. For the sake of easy understanding, the depth of the first groove 123 is denoted as C.

[0038] In this embodiment, the opening length range of the first groove 123 is defined as 22 mm to 27 mm, and the depth range of the first groove 123 is defined as 10 mm to 15 mm. However, it is not limited thereto. In other embodiments, only the opening length range of the first groove 123 may be defined as 22 mm to 27 mm, or only the depth range of the first groove 123 may be defined as 10 mm to 15 mm.

[0039] For the air conditioner outdoor unit fan blade 100 according to the embodiment of the present invention, the blade 120 is strip-shaped and extends in a swirling shape. The two ends of the blade 120 are arranged at intervals and are both connected to the circumferential surface of the central shaft 110. The blade 120 and the central shaft 110 jointly enclose an air guiding cavity 130. The blade 120 is provided with a leading edge 121 and a trailing edge 122 oppositely. A first groove 123 is formed at a position where the trailing edge 122 is close to the central shaft 110, and the first groove 123 communicates with the air guiding cavity 130. Compared with the prior art, since the air conditioner outdoor unit fan blade 100 provided by the present invention adopts the blade 120 that extends in a swirling shape and both ends are connected to the circumferential surface of the central shaft 110 and the trailing edge 122 provided with the first groove 123, it can reduce the weight of the air conditioner outdoor unit fan blade 100 while ensuring the air outlet effect, reduce the energy consumption during its operation, reduce the operation cost, and improve the fan blade efficiency.

[0040] Second Embodiment

[0041] Please refer to Figure 3 and Figure 4 The embodiment of the present invention provides an air conditioner outdoor unit fan blade 100. Compared with the first embodiment, the difference in this embodiment is that the blade 120 is further provided with a second groove 126.

[0042] In this embodiment, a second groove 126 is formed at a position where the leading edge 121 is close to the central shaft 110. The second groove 126 communicates with the air guiding cavity 130. The size of the second groove 126 is smaller than that of the first groove 123. The second groove 126 is used to divide the larger eddy current formed during the air outlet process into smaller eddy currents to reduce the wind noise. The second groove 126 is also used to reduce the weight of the blade 120, thereby reducing the weight of the entire air conditioner outdoor unit fan blade 100, reducing the energy consumption during its operation, reducing the operation cost, and improving the fan blade efficiency. In addition, the second groove 126 is arranged at a position where the leading edge 121 is close to the central shaft 110. On the one hand, it can ensure the strength of the blade 120 and prevent the blade 120 from being torn due to the second groove 126 formed at the torsion position. On the other hand, it can ensure the air outlet effect of the blade 120 and will not affect the air output of the entire air conditioner outdoor unit fan blade 100.

[0043] Further, the number of the second grooves 126 is multiple, and the number of the second grooves 126 is greater than that of the first grooves 123. The multiple second grooves 126 are divided into two groups, and each group of second grooves 126 is arranged at one end of the blade 120. The two groups of second grooves 126 are oppositely arranged on both sides of the air guiding cavity 130. The two groups of second grooves 126 work together to further reduce wind noise and reduce the weight of the blade 120.

[0044] In this embodiment, the first group of second grooves 126 is arranged on the first leading edge 1211 of the first blade segment 124 and close to the central axis 110 to divide the eddy current while ensuring the strength and air guiding effect of the first blade segment 124, reduce wind noise, and reduce the weight of the first blade segment 124; the second group of second grooves 126 is arranged on the second leading edge 1212 of the second blade segment 125 and close to the central axis 110 to divide the eddy current while ensuring the strength and air guiding effect of the second blade segment 125, reduce wind noise, and reduce the weight of the second blade segment 125.

[0045] It should be noted that the number of the second grooves 126 in each group is multiple, and the multiple second grooves 126 work together to improve the dividing effect of the eddy current, further reduce wind noise, increase the removed volume of the blade 120, further reduce the weight of the blade 120, and improve the efficiency of the wind blade. In this embodiment, the number of the second grooves 126 in each group is four, but it is not limited thereto. In other embodiments, the number of the second grooves 126 in each group can be five or three, and the number of the second grooves 126 in each group is not specifically limited.

[0046] Further, the multiple second grooves 126 in each group are arranged at equal intervals to ensure the structural strength and air outlet effect of the blade 120 and improve the aesthetic degree. Specifically, the distance between two adjacent second grooves 126 in each group ranges from 6 mm to 10 mm. A reasonable distance between two adjacent second grooves 126 in each group can ensure the strength of the blade 120 and avoid affecting the air outlet effect. In this embodiment, the distance between two adjacent second grooves 126 in each group is 8 mm, but it is not limited thereto. In other embodiments, the distance between two adjacent second grooves 126 in each group can be 6 mm or 10 mm, and the distance between two adjacent second grooves 126 in each group is not specifically limited. For the convenience of understanding, the distance between two adjacent second grooves 126 in each group is represented as D.

[0047] Preferably, the opening length of the second groove 126 ranges from 9 mm to 13 mm. A reasonable opening length of the second groove 126 can improve the eddy current division effect as much as possible while ensuring the structural strength of the blade 120, reduce wind noise, and also reduce the weight of the blade 120 as much as possible, reduce energy consumption, reduce operating costs, and improve the efficiency of the wind blade. In this embodiment, the opening length of the second groove 126 is 11 mm, but it is not limited thereto. In other embodiments, the opening length of the second groove 126 can be 9 mm or 13 mm. The opening length of the second groove 126 is not specifically limited. For the convenience of understanding, the opening length of the second groove 126 is denoted as E.

[0048] Preferably, the depth of the second groove 126 ranges from 5 mm to 9 mm. A reasonable depth of the second groove 126 can further improve the eddy current division effect while ensuring the structural strength of the blade 120, reduce wind noise, and also further reduce the weight of the blade 120, reduce energy consumption, reduce operating costs, and improve the efficiency of the wind blade. In this embodiment, the depth of the second groove 126 is 7 mm, but it is not limited thereto. In other embodiments, the depth of the second groove 126 can be 5 mm or 9 mm. The depth of the second groove 126 is not specifically limited. For the convenience of understanding, the depth of the second groove 126 is denoted as F.

[0049] In this embodiment, the opening length range of the second groove 126 is limited to 9 mm to 13 mm, and the depth range of the second groove 126 is limited to 5 mm to 9 mm. However, it is not limited thereto. In other embodiments, only the opening length range of the second groove 126 can be limited to 9 mm to 13 mm, or only the depth range of the second groove 126 can be limited to 5 mm to 9 mm.

[0050] The beneficial effects of the outdoor unit wind blade 100 of the air conditioner according to the embodiment of the present invention are the same as those of the first embodiment, and will not be described in detail here.

[0051] Third Embodiment

[0052] The present invention provides an air conditioner (not shown in the figure) for regulating the indoor temperature. The air conditioner includes an outdoor unit and an indoor unit, and the outdoor unit includes a housing, a condenser, a driving motor, and the outdoor unit wind blade 100. Among them, the basic structure, principle, and technical effects generated by the outdoor unit wind blade 100 are the same as those of the first embodiment. For a brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding content in the first embodiment.

[0053] In this embodiment, the outdoor unit of the air conditioner is installed outdoors and connected to the indoor unit of the air conditioner. The outdoor unit and the indoor unit of the air conditioner work together to achieve the function of regulating the indoor temperature. The condenser, the drive motor, and the outdoor unit air blade 100 are all arranged inside the housing. The drive motor is connected to the outdoor unit air blade 100, and the position of the outdoor unit air blade 100 corresponds to the position of the condenser. The outdoor unit air blade 100 can form a negative pressure during rotation to drive the air flow to form an outlet air flow. This outlet air flow can air-cool the condenser to take away the heat of the condenser, ensuring the normal operation of the condenser, and thus realizing the function of heating or cooling the indoor environment by the indoor unit of the air conditioner.

[0054] The beneficial effects of the air conditioner described in the embodiments of the present invention are the same as those of the first embodiment, and will not be elaborated here.

[0055] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope defined by the claims.

Claims

1. An outdoor unit fan blade of an air conditioner, characterized in that, It includes a central axis (110) and blades (120). The blades (120) are strip-shaped and extend in a swirling manner. The two ends of the blades (120) are spaced apart and are both connected to the circumferential surface of the central axis (110). The blades (120) and the central axis (110) jointly enclose an air guiding cavity (130). The blades (120) are provided with a leading edge (121) and a trailing edge (122) oppositely. A first groove (123) is formed at a position of the trailing edge (122) close to the central axis (110), and the first groove (123) communicates with the air guiding cavity (130).

2. The air conditioner outdoor unit fan blade according to claim 1, wherein, The number of the first grooves (123) is multiple. The multiple first grooves (123) are divided into two groups. Each group of the first grooves (123) is arranged at one end of the blade (120), and the two groups of the first grooves (123) are oppositely arranged on both sides of the air guiding cavity (130).

3. The air conditioner outdoor unit fan blade according to claim 2, characterized in that, The number of each group of the first grooves (123) is multiple, and the multiple first grooves (123) in each group are arranged at equal intervals.

4. The air conditioner outdoor unit fan blade according to claim 3, characterized in that, The spacing range between two adjacent first grooves (123) in each group is 15 mm to 20 mm.

5. The air conditioner outdoor unit fan blade according to claim 1, wherein, The opening length range of the first groove (123) is 22 mm to 27 mm; and / or, the depth range of the first groove (123) is 10 mm to 15 mm.

6. The air conditioner outdoor unit fan blade according to claim 1, characterized in that A second groove (126) is formed at a position of the leading edge (121) close to the central axis (110), and the second groove (126) communicates with the air guiding cavity (130). The size of the second groove (126) is smaller than that of the first groove (123).

7. The air conditioner outdoor unit fan blade according to claim 6, wherein The number of the second grooves (126) is multiple. The number of the second grooves (126) is greater than that of the first grooves (123). The multiple second grooves (126) are divided into two groups. Each group of the second grooves (126) is arranged at one end of the blade (120), and the two groups of the second grooves (126) are oppositely arranged on both sides of the air guiding cavity (130).

8. The air conditioner outdoor unit fan blade according to claim 7, characterized in that, The number of each group of the second grooves (126) is multiple. The multiple second grooves (126) in each group are arranged at equal intervals. The spacing range between two adjacent second grooves (126) in each group is 6 mm to 10 mm.

9. The air conditioner outdoor unit fan blade according to claim 6, wherein, The opening length range of the second groove (126) is 9 mm to 13 mm; and / or, the depth range of the second groove (126) is 5 mm to 9 mm.

10. An air conditioner, characterized in that, It includes a driving motor and an outdoor unit air blade of an air conditioner as described in any one of claims 1 to 9, and the driving motor is connected to the central axis (110).

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