Motor structure for condensate fan

Abstract

The utility model belongs to the technical field of motors, and provides a motor structure for a condensate fan, which comprises a shell, a power assembly and fan blades. A containing cavity is formed in the shell, the shell is provided with an annular side wall used for forming the containing cavity in a matched mode, a front cover and a rear cover, the front cover and the rear cover are connected to the two ends of the annular side wall, an axial through hole communicated with the containing cavity is formed in the front cover, a side through hole communicated with the containing cavity is formed in the annular side wall, and the axial direction of the axial through hole is parallel to the axial direction of the annular side wall. The side through hole is formed in one side, close to the rear cover, of the annular side wall; the power assembly comprises an output shaft penetrating through the front cover and the rear cover and further comprises a driving mechanism arranged in the containing cavity and used for driving the output shaft to rotate around the center axis of the output shaft. The fan blades are arranged in the containing cavity and coaxially connected to the output shaft, and the fan blades are arranged according to a preset posture and can generate cooling airflow from the axial through hole to the side through hole in the containing cavity.

Description

Technical Field

[0001] This application belongs to the field of motor technology, and in particular relates to a motor structure for a condenser fan. Background Technology

[0002] Existing brushed motors used in condenser fans are prone to overheating during prolonged operation. This sustained high-temperature environment significantly accelerates the wear and aging of internal motor components, particularly the brushes, commutator, and bearings, leading to a shortened overall motor lifespan and an increased failure rate. Therefore, it is necessary to address these technical issues. Utility Model Content

[0003] The purpose of this application is to provide a motor structure for condenser fans to solve the technical problem of short service life of condenser fan motors in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a motor structure for a condenser fan, comprising:

[0005] The housing has an internal cavity. The housing has an annular sidewall for fitting into the cavity. It also has a front cover and a rear cover axially connected to both ends of the annular sidewall. The front cover has an axial through hole communicating with the cavity. The annular sidewall has a side through hole communicating with the cavity. The axial direction of the axial through hole is parallel to the axial direction of the annular sidewall. The side through hole is located on the side of the annular sidewall near the rear cover.

[0006] The power assembly includes an output shaft with one end penetrating the front cover and the other end housed in the rear cover, and also includes a drive mechanism disposed inside the receiving cavity for driving the output shaft to rotate about its own central axis.

[0007] The fan blades are disposed within the receiving cavity and coaxially connected to the output shaft. The fan blades are arranged in a predetermined posture and are capable of generating a cooling airflow from the axial through hole to the side through hole inside the receiving cavity.

[0008] Optionally, the fan blades are offset from the center of the output shaft and close to the rear cover.

[0009] Optionally, a plurality of the axial through holes and / or the side through holes are evenly arranged around the output shaft.

[0010] Optionally, the drive mechanism includes a bearing coaxially connected to the output shaft and used to support the output shaft;

[0011] The front cover and the rear cover are respectively recessed to form recessed cavities that communicate with the receiving cavity and are used to accommodate the bearing. The recessed cavity is a cylindrical cavity coaxial with the output shaft.

[0012] Optionally, the front cover and the rear cover are recessed on the side opposite to the receiving cavity to form an annular groove coaxial with the output shaft;

[0013] The diameter of the recessed cavity is smaller than the diameter of the annular groove, and the recessed cavity and the annular groove have the same depth in the axial direction of the output shaft.

[0014] Optionally, the annular groove forms a tapered sidewall coaxial with the output shaft, with the smaller end of the tapered sidewall being closer to the receiving cavity than the larger end.

[0015] Optionally, the rear cover also forms a plurality of waist-shaped recesses around the output shaft on the side opposite to the receiving cavity;

[0016] The rear cover forms reinforcing ribs through the portion between adjacent waist-shaped grooves.

[0017] Optionally, the waist-shaped groove extends along an arc-shaped path coaxial with the output shaft, and a plurality of the waist-shaped grooves are evenly spaced around the output shaft.

[0018] Optionally, the motor structure for the condenser fan also includes lugs and bolts;

[0019] The lugs are fixedly connected to the annular sidewall and are evenly distributed around the central axis of the annular sidewall, and the bolts are fixedly connected to the lugs.

[0020] Optionally, the lug includes a first plate portion and a second plate portion that are vertically connected;

[0021] The bolt is connected to the first plate portion, and the second plate portion is connected to the annular sidewall and forms an arched shape that can fit against the annular sidewall.

[0022] The beneficial effects of the condenser fan motor structure provided in this application are as follows: Compared with the prior art, in the condenser fan motor structure provided in this application, the fan blades coaxially connected to the output shaft can force the generation of internal cooling airflow from the axial through-hole and out through the side through-hole (especially near the high-temperature area of ​​the rear cover) during motor operation. This built-in active air cooling method can effectively remove the heat generated in the internal cavity of the motor, especially in the rear cover area and bearing area, thereby significantly reducing the operating temperature. The reduction in internal temperature directly slows down the wear and aging rate of key drive components such as brushes, commutators, and bearings, thus greatly extending the overall service life of the condenser fan motor structure in this application, which is far superior to the prior art. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the motor for the condenser fan in the embodiments of this application. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the overall structure of the motor for the condenser fan in the embodiments of this application. Figure 2 ;

[0026] Figure 3 This is a top view of the overall structure of the motor for the condenser fan in the embodiments of this application;

[0027] Figure 4 For along Figure 3 Cross-sectional view of line AA in the middle.

[0028] In the figure, the following reference numerals are used: 100, housing; 101, receiving cavity; 102, annular sidewall; 103, front cover; 104, rear cover; 105, axial through hole; 106, side through hole; 107, recessed cavity; 108, annular groove; 109, conical sidewall; 110, waist-shaped recess; 111, reinforcing rib; 112, lug; 113, bolt; 114, first plate; 115, second plate; 201, output shaft; 202, rotor; 203, permanent magnet; 204, brush holder; 205, commutator; 206, bearing; 300, fan blade. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] Please refer to the following: Figures 1 to 4 The present application provides a description of a motor structure for a condenser fan. This condenser fan motor structure includes a housing 100, a power assembly, and fan blades 300. Wherein:

[0034] The housing 100 has an internal cavity 101. The housing 100 has an annular sidewall 102 for fitting into the cavity 101, and a front cover 103 and a rear cover 104 axially connected to both ends of the annular sidewall 102. The front cover 103 has an axial through hole 105 communicating with the cavity 101, and the annular sidewall 102 has a side through hole 106 communicating with the cavity 101. The axial direction of the axial through hole 105 is parallel to the axial direction of the annular sidewall 102, and the side through hole 106 is... On the side of the annular sidewall 102 near the rear cover 104, the power assembly includes an output shaft 201 with one end penetrating the front cover 103 and the other end housed in the rear cover 104. It also includes a drive mechanism disposed inside the receiving cavity 101 and used to drive the output shaft 201 to rotate around its own central axis. Fan blades 300 are disposed inside the receiving cavity 101 and coaxially connected to the output shaft 201. The fan blades 300 are arranged in a predetermined posture and can generate cooling airflow from the axial through-hole 105 to the side through-hole 106 inside the receiving cavity 101. It is understood that the drive mechanism used to drive the output shaft 201 to rotate in this embodiment may include structures commonly used in the art, such as a rotor 202, a coil wound on the rotor 202, a permanent magnet 203, a brush holder 204, and a commutator 205 for commutating power to the coil. The connection methods between these structures are all conventional techniques in the art and will not be described in detail here.

[0035] According to the structure provided in this embodiment, in the condenser fan motor structure provided in this embodiment, the fan blades 300 coaxially connected to the output shaft 201 can force the generation of internal cooling airflow from the axial through-hole 105 into the motor and from the side through-hole 106 (especially near the high-temperature area of ​​the rear cover 104) during motor operation. This built-in active air cooling method can effectively remove the heat generated in the motor's internal cavity 101, especially in the area of ​​the rear cover 104 and the bearing 206, thereby significantly reducing the operating temperature. The reduction in internal temperature directly slows down the wear and aging rate of key drive components such as brushes, commutator 205, and bearing 206, thereby significantly extending the overall service life of the condenser fan motor structure in this application, which is far superior to the prior art.

[0036] Additionally, it should be noted that the cooling airflow can also carry away the carbon powder generated inside the housing 101 due to carbon brush wear. This can effectively prevent carbon powder from causing short circuits between electrodes and damaging the motor, which can further extend the service life of the motor structure for the condenser fan in this embodiment.

[0037] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The fan blades 300 are offset from the center of the output shaft 201 and close to the rear cover 104. According to the structure provided in this embodiment, by setting the fan blades 300 offset from the center of the output shaft 201 and close to the rear cover 104, the cooling airflow can be more evenly distributed in the receiving cavity 101 and can act more directly on the high-temperature area near the rear cover 104, thereby significantly enhancing the heat dissipation effect on the core heat-generating part. This also helps to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0038] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 A plurality of axial through holes 105 and / or side through holes 106 are evenly arranged around the output shaft 201. According to the structure provided in this embodiment, by evenly arranging a plurality of axial through holes 105 and / or side through holes 106 around the output shaft 201, the coverage and flow efficiency of the cooling airflow can be significantly increased, ensuring that the high-temperature area inside the receiving cavity 101, especially near the rear cover 104, can obtain more uniform and sufficient heat exchange, thereby effectively avoiding local overheating. This also helps to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0039] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4The drive mechanism includes a bearing 206 coaxially connected to the output shaft 201 and used to support the output shaft 201; the front cover 103 and the rear cover 104 are respectively recessed to form recessed cavities 107 communicating with the receiving cavity 101 and used to receive the bearing 206, and the recessed cavity 107 is a cylindrical cavity coaxial with the output shaft 201. According to the above structure provided in this embodiment, by providing cylindrical recessed cavities 107 coaxial with the output shaft 201 and communicating with the receiving cavity 101 on the front cover 103 and the rear cover 104 respectively to receive the bearing 206, the cooling airflow can directly flow through the surface of the bearing 206 and efficiently remove its working heat, thereby significantly reducing the temperature of the bearing 206 and delaying aging and wear, which is also conducive to further extending the service life of the motor structure for the condenser fan in this embodiment.

[0040] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The front cover 103 and the rear cover 104 are recessed on the side opposite to the receiving cavity 101 to form annular grooves 108 coaxial with the output shaft 201. The diameter of the recessed cavity 107 is smaller than the diameter of the annular groove 108, and the recessed cavity 107 and the annular groove 108 have the same depth in the axial direction of the output shaft 201. According to the structure provided in this embodiment, by forming annular grooves 108 coaxial with the recessed cavity 107 and of the same depth on opposite sides of the front and rear or rear cover 104, the thickness of the front cover 103 and the rear cover 104 can be kept uniform and consistent, and they have a neat appearance. This can ensure structural strength and avoid local heat accumulation, while also providing a stable and smooth heat conduction path for cooling airflow, thereby significantly improving heat dissipation efficiency and reducing damage to the bearing 206. This also helps to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0041] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The annular groove 108 forms a tapered sidewall 109 coaxial with the output shaft 201, with the smaller end of the tapered sidewall 109 closer to the receiving cavity 101 than the larger end. According to the structure provided in this embodiment, the tapered sidewall 109 not only guides the cooling airflow to accelerate diffusion along the tapered surface, thereby significantly enhancing the efficiency of hot air exhaust, but also effectively avoids local stress concentration and significantly improves the structural strength of the housing 100. This also helps to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0042] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4The rear cover 104 also forms a plurality of waist-shaped recesses 110 around the output shaft 201 on the side opposite to the receiving cavity 101; the rear cover 104 forms reinforcing ribs 111 in the portion between adjacent waist-shaped recesses 110. According to the structure provided in this embodiment, by providing waist-shaped recesses 110 on the rear cover 104, reinforcing ribs 111 can be formed in the portion between the recesses. This can significantly reduce the weight of the rear cover 104 while maintaining its structural rigidity, thereby effectively ensuring the stability of the heat dissipation channel. This also helps to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0043] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The waist-shaped grooves 110 extend along an arc-shaped path coaxial with the output shaft 201, and multiple waist-shaped grooves 110 are evenly spaced around the output shaft 201. According to the structure provided in this embodiment, the multiple waist-shaped grooves 110 evenly distributed around the output shaft 201 can effectively ensure the balanced distribution of the mechanical support of the reinforcing ribs 111, thereby effectively suppressing the thermal deformation of the rear cover 104, which is also conducive to further extending the service life of the motor structure for the condenser fan in this embodiment.

[0044] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The condenser fan motor structure also includes lugs 112 and bolts 113. Lugs 112 are fixedly connected to the annular sidewall 102 and are evenly distributed around the central axis of the annular sidewall 102. Bolts 113 are fixedly connected to lugs 112. According to the structure provided in this embodiment, the bolts 113 are fixedly connected to the housing 100 via lugs 112, which significantly improves the ease of installation of the condenser fan motor structure in this embodiment. Specifically, during installation, simply fitting the corresponding nuts onto the bolts 113 ensures stable installation of the housing 100, which also helps to further extend the service life of the condenser fan motor structure in this embodiment.

[0045] In another embodiment of this application, please refer to [the relevant document / reference]. Figures 1 to 4 The lug 112 includes a first plate portion 114 and a second plate portion 115 vertically connected; a bolt 113 is connected to the first plate portion 114, and the second plate portion 115 is connected to the annular sidewall 102 and forms an arched shape that can fit against the annular sidewall 102. According to the structure provided in this embodiment, the lug 112 can form a more stable connection with the annular sidewall 102 through its arched shape that can fit against the annular sidewall 102, which is also beneficial to further extend the service life of the motor structure for the condenser fan in this embodiment.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A motor structure for a condenser fan, characterized in that, include: A housing (100) has an interior cavity (101). The housing (100) has an annular sidewall (102) for fitting into the cavity (101). It also has a front cover (103) and a rear cover (104) connected axially to both ends of the annular sidewall (102). The front cover (103) has an axial through hole (105) communicating with the cavity (101). The annular sidewall (102) has a side through hole (106) communicating with the cavity (101). The axial direction of the axial through hole (105) is parallel to the axial direction of the annular sidewall (102). The side through hole (106) is located on the side of the annular sidewall (102) near the rear cover (104). The power assembly includes an output shaft (201) with one end passing through the front cover (103) and the other end housed in the rear cover (104), and also includes a drive mechanism disposed inside the receiving cavity (101) for driving the output shaft (201) to rotate around its own central axis; The fan blades (300) are disposed in the receiving cavity (101) and coaxially connected to the output shaft (201). The fan blades (300) are arranged in a predetermined posture and are able to generate a cooling airflow from the axial through hole (105) to the side through hole (106) inside the receiving cavity (101).

2. The motor structure for a condenser fan as described in claim 1, characterized in that: The fan blade (300) is offset from the center of the output shaft (201) and close to the rear cover (104).

3. The motor structure for a condenser fan as described in claim 2, characterized in that: The axial through holes (105) and / or the side through holes (106) are evenly arranged in a plurality of them around the output shaft (201).

4. The motor structure for a condenser fan as described in claim 1, characterized in that: The drive mechanism includes a bearing (206) coaxially connected to the output shaft (201) and used to support the output shaft (201). The front cover (103) and the rear cover (104) are respectively recessed to form recessed cavities (107) that communicate with the receiving cavity (101) and are used to receive the bearing (206). The recessed cavity (107) is a cylindrical cavity coaxial with the output shaft (201).

5. The motor structure for a condenser fan as described in claim 4, characterized in that: The front cover (103) and the rear cover (104) are recessed on the side opposite to the receiving cavity (101) to form an annular groove (108) coaxial with the output shaft (201). The diameter of the recessed cavity (107) is smaller than the diameter of the annular groove (108), and the recessed cavity (107) and the annular groove (108) have the same depth in the axial direction of the output shaft (201).

6. The motor structure for a condenser fan as described in claim 5, characterized in that: The annular groove (108) forms a tapered sidewall (109) coaxial with the output shaft (201), and the small end of the tapered sidewall (109) is closer to the receiving cavity (101) than the large end.

7. The motor structure for a condenser fan as described in claim 6, characterized in that: The rear cover (104) also forms a plurality of waist-shaped recesses (110) around the output shaft (201) on the side opposite to the receiving cavity (101). The rear cover (104) forms a reinforcing rib (111) through the portion between adjacent waist-shaped grooves (110).

8. The motor structure for a condenser fan as described in claim 7, characterized in that: The waist-shaped sink (110) extends along an arc-shaped path coaxial with the output shaft (201), and a plurality of the waist-shaped sinks (110) are evenly spaced around the output shaft (201).

9. The motor structure for a condenser fan as described in claim 1, characterized in that: The motor structure for the condenser fan also includes a lug (112) and a bolt (113). The lug (112) is fixedly connected to the annular sidewall (102) and is evenly distributed around the central axis of the annular sidewall (102), and the bolt (113) is fixedly connected to the lug (112).

10. The motor structure for a condenser fan as described in claim 9, characterized in that: The lug (112) includes a first plate portion (114) and a second plate portion (115) that are vertically connected. The bolt (113) is connected to the first plate (114), and the second plate (115) is connected to the annular sidewall (102) and forms an arched shape that can fit into the annular sidewall (102).

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