Bearing chamber structure, motor and water heater

Abstract

The utility model belongs to the technical field of motors, and particularly discloses a bearing chamber structure, a motor and a water heater, the bearing chamber structure comprises a support wire frame, the support wire frame is provided with a central hole, the support wire frame is provided with a bearing wall, and the bearing wall circumferentially surrounds the periphery of the central hole; the bearing wall forms a bearing chamber for accommodating a bearing, the bearing wall comprises a heat dissipation hoop body and a supporting wall embedded in the heat dissipation hoop body, and the heat dissipation hoop body forms a contact surface in contact with the bearing; the motor comprises an upper bearing chamber structure and a lower bearing chamber structure, the bearing chamber structure is adopted in the upper bearing chamber structure and / or the lower bearing chamber structure, the motor is adopted in the water heater, and therefore the bearing wall comprises the heat dissipation hoop body and the supporting wall embedded in the heat dissipation hoop body, the structural strength is guaranteed, and meanwhile the heat dissipation performance of the water heater is improved. And the heat conduction area of the heat dissipation material and the supporting wall is increased, so that the heat dissipation capacity of the bearing chamber is improved, and the heat dissipation effect of the bearing is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially relates to a bearing chamber structure, motor and water heater. BACKGROUND

[0002] The development of motor is more and more tend to high precision, environmental protection and low noise, the prior art provides a kind of motor, the bearing chamber of motor is composed of support wire rack, multiple support walls and multiple heat dissipation parts, multiple support walls are circumferentially spaced distribution on support wire rack, and two adjacent support walls are connected by heat dissipation part, support wall is used to ensure the structural strength of bearing chamber, and heat dissipation part is used for bearing heat dissipation, heat dissipation part is usually made of BMC material, but the bearing chamber of this kind of structure setting, bearing can not be fully heat dissipated, and there is still room for improvement. SUMMARY

[0003] One of the technical problems solved by the utility model is to provide a bearing chamber structure, motor and water heater, which can effectively solve the problem of poor heat dissipation effect of bearing chamber.

[0004] The first technical problem is solved by the following technical scheme:

[0005] A bearing chamber structure, the bearing chamber structure includes support wire rack, the support wire rack is provided with center hole, the support wire rack is provided with bearing wall, and the bearing wall circumferentially surrounds the outer periphery of the center hole;The bearing wall forms a bearing chamber for accommodating bearings, and the bearing wall includes a heat dissipation ring body and a support wall embedded in the heat dissipation ring body, and the heat dissipation ring body has a contact surface in contact with the bearing.

[0006] The bearing chamber structure has the beneficial effects compared with the background technology: the bearing wall surrounds the outer periphery of the center hole to form a bearing chamber for accommodating bearings, and the bearing wall includes a heat dissipation ring body and a support wall embedded in the heat dissipation ring body, which ensures the structural strength, and since the support wall is embedded in the heat dissipation ring body and the heat dissipation ring body has a contact surface in contact with the bearing, it is beneficial to increase the heat conduction area of the heat dissipation material and the support wall, the heat dissipation material and air, thereby facilitating the improvement of the heat dissipation amount of the bearing chamber and the heat dissipation effect of the bearing.

[0007] In one embodiment, a plurality of support walls are circumferentially spaced around the outer periphery of the center hole, the inner ring surface of the heat dissipation ring body is circumferentially spaced a plurality of support protrusions, and the heat dissipation ring body is sleeved on the support wall, so that the support wall is embedded between adjacent support protrusions.

[0008] In one embodiment, the support protrusions and the support wall jointly form a contact surface in contact with the bearing.

[0009] In one of the embodiments, the support wall is provided with a plurality of through holes penetrating the support wall along the radial direction of the center hole; the inner ring surface of the heat dissipation ring body is also provided with a plurality of embedded protrusions which are embedded in the through holes one by one.

[0010] In one of the embodiments, the heat dissipation ring body is integrally injection molded on the support wall.

[0011] In one of the embodiments, the heat conductivity of the heat dissipation ring body is greater than that of the support wall.

[0012] In one of the embodiments, the support wall is made of nylon material; and / or, the heat dissipation ring body is made of BMC material.

[0013] In one of the embodiments, the outer circumferential surface of the bearing wall is provided with a plurality of heat dissipation protrusions.

[0014] Also provided is an electric machine comprising an upper bearing chamber structure and a lower bearing chamber structure, wherein the upper bearing chamber structure and / or the lower bearing chamber structure adopts the bearing chamber structure as described above.

[0015] Also provided is a water heater comprising the electric machine as described above. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic view of the electric machine provided by the present application;

[0017] Figure 2 A schematic view of the bearing wall embedded in the heat dissipation ring body provided by the present application;

[0018] Figure 3 A schematic view of the support wire rack and the support wall thereof provided by the present application;

[0019] Figure 4 A schematic view of the heat dissipation ring body provided by the present application.

[0020] REFERENCE SIGNS:

[0021] 1, support wire rack; 11, center hole;

[0022] 2, bearing wall; 21, support wall; 211, through hole; 22, heat dissipation ring body; 221, heat dissipation protrusion; 222, support protrusion; 223, embedded protrusion. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0024] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the 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 cannot be understood as a limitation on the present application.

[0025] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] As shown in Figures 1 to 4 The present application provides a bearing chamber structure, which comprises a support reel 1 provided with a central hole 11, and a bearing wall 2 disposed on the support reel 1 and circumferentially surrounding the outer periphery of the central hole 11; the bearing wall 2 forms a bearing chamber for accommodating a bearing, and comprises a support wall 21 embedded in a heat dissipation hoop body 22, and the heat dissipation hoop body 22 has a contact surface in contact with the bearing.

[0028] The bearing wall 2 comprises a support wall 21 embedded in a heat dissipation hoop body 22, which not only ensures the structural strength, but also increases the heat conduction area of the heat dissipation material and the support wall 21, and the heat dissipation material and the air, thereby facilitating the improvement of the heat dissipation amount of the bearing chamber, and improving the heat dissipation effect of the bearing.

[0029] In some embodiments, the outer circumferential surface of the bearing wall 2 is provided with a plurality of heat dissipation protrusions 221, which can further increase the heat dissipation area, thereby facilitating the heat dissipation of the bearing chamber during operation of the bearing, and further improving the heat dissipation effect. As shown in Figures 1 to 4 The heat dissipation protrusions 221 are provided in several numbers, which are distributed circumferentially along the outer circumferential surface of the bearing wall 2, thereby improving the heat dissipation effect. In the present embodiment, the plurality of heat dissipation protrusions 221 are divided into a group, and the plurality of groups of heat dissipation protrusions 221 are distributed circumferentially and spaced apart along the outer circumferential surface of the hoop body, and the heat dissipation protrusions 221 in the same group also have gaps, thereby providing space for heat dissipation. Exemplarily, the heat dissipation protrusions 221 are cylindrical and protrude radially along the central hole 11.

[0030] As shown in Figures 1 to 4 In particular, the plurality of support walls 21 are circumferentially spaced around the outer periphery of the central hole 11, and the inner annular surface of the heat dissipation ring hoop body 22 is circumferentially spaced provided with a plurality of support protrusions 222, the heat dissipation ring hoop body 22 is sleeved on the support wall 21, so that the support wall 21 is embedded between adjacent support protrusions 222, the support protrusions 222 and the support wall 21 jointly form a contact surface in contact with the bearing, and the surface of the support protrusions 222 and the support wall 21 facing the central hole 11 is arc-shaped, thereby forming a complete annular shape to provide good support for the bearing outer ring. In the present embodiment, the support wall 21 and the support protrusion 222 are provided in six numbers, thereby forming a good support effect in the circumferential direction. In the present embodiment, the outer circumferential surface of the heat dissipation ring hoop body 22 is formed with the heat dissipation protrusions 221 described above, that is, the heat dissipation protrusions 221 are integrally formed with the heat dissipation ring hoop body 22, which is convenient for molding. It should be noted here that the support wall 21 is also integrally formed with the support frame 1, which is also convenient for molding.

[0031] As shown in Figures 2 to 4As shown, in some embodiments, a plurality of through holes 211 are further arranged on the support wall 21, the through holes 211 penetrating the support wall 21 along the radial direction of the central hole 11, and the inner surface of the heat dissipation ring body 22 is further provided with embedded protrusions 223 arranged between adjacent support protrusions 222, the embedded protrusions 223 being embedded in the through holes 211, so as to ensure the stability of the bearing wall 2 and prevent the bearing wall 2 from falling off during use, and further increase the contact area between the heat dissipation ring body 22 and the support wall 21. Specifically, the plurality of through holes 211 are divided into a group, and a plurality of groups of through holes 211 are distributed along the axial direction of the heat dissipation ring body 22, so as to further enhance the stability through the above-mentioned embedded cooperation of the plurality of groups. More specifically, the end surface of the embedded protrusion 223 facing the central hole 11 and the smooth transition of the support protrusion 222 facing the central hole 11 are located on the same circumferential surface, avoiding interference between the embedded protrusion 223 and the bearing. It should be noted that the shape of the through hole 211 is not limited, which can be a circular hole, a rectangular hole or a triangular hole, etc.

[0032] In the current embodiment, the thermal conductivity of the heat dissipation ring body 22 is greater than that of the support wall 21, so that the heat can be directly conducted from the heat dissipation ring body 22 to dissipate heat, thereby improving the heat dissipation efficiency. That is, in the current embodiment, the embedded protrusion 223 can not only play a role in strengthening stability, but also increase the contact area and quickly conduct heat to improve the heat dissipation efficiency. The support wall 21 is mainly used for support and heat conduction. The support protrusion 222 can also quickly conduct heat to improve the heat dissipation effect, and can assist the support wall 21 to support the bearing. For example, the heat dissipation ring body 22 is made of BMC material; and the support wall 21 is made of nylon material. It should be noted that the thermal conductivity of nylon is about 0.25 W / (m·K); and the thermal conductivity of BMC material is about 0.3 W / (m·K)-0.4 W / (m·K), so that under the same conditions, the heat dissipation ring body 22 can improve the heat conduction effect and quickly transfer heat to improve the heat dissipation effect.

[0033] In some embodiments, since the support protrusion 222 is embedded between adjacent bearing walls 2, and the embedded protrusion 223 is embedded in the through hole 211, in order to facilitate molding, the heat dissipation ring body 22 is integrally injection molded on the support wall 21.

[0034] The application also provides an electric motor, which comprises an upper bearing chamber structure and a lower bearing chamber structure, the upper bearing chamber structure and / or the lower bearing chamber structure adopting the above-mentioned bearing chamber structure, so as to further improve the heat dissipation efficiency and solve the problem of poor heat dissipation effect. Of course, the electric motor also has existing structures such as a volute assembly, a magnetic ring and a stator core, which will not be described in detail.

[0035] In addition, the application further provides a water heater, which adopts the motor, thereby solving the problem of poor heat dissipation effect of the motor in the water heater.

[0036] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, and in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered as the scope of the description.

[0037] The specific contents of the above specific embodiments only express several embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the utility model. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A bearing housing structure, characterized in that: The bearing housing structure includes a support wire frame (1), which has a central hole (11). A bearing wall (2) is provided on the support wire frame (1), and the bearing wall (2) surrounds the outer periphery of the central hole (11). The bearing wall (2) forms a bearing housing for accommodating the bearing. The bearing wall (2) includes a heat dissipation ring hoop (22) and a support wall (21) embedded in the heat dissipation ring hoop (22). The heat dissipation ring hoop (22) has a contact surface that contacts the bearing.

2. The bearing housing structure according to claim 1, characterized in that: Multiple support walls (21) are circumferentially spaced around the outer periphery of the central hole (11). Multiple support protrusions (222) are circumferentially spaced on the inner ring surface of the heat dissipation ring (22). The heat dissipation ring (22) is sleeved on the support wall (21), so that the support wall (21) is embedded between adjacent support protrusions (222).

3. The bearing housing structure according to claim 2, characterized in that: The support protrusion (222) and the support wall (21) together form a contact surface that contacts the bearing.

4. The bearing housing structure according to claim 2, characterized in that: The support wall (21) is provided with a plurality of through holes (211), which penetrate the support wall (21) radially along the central hole (11). The inner ring surface of the heat dissipation ring (22) also has a plurality of embedded protrusions (223), which are embedded one by one into the through holes (211).

5. The bearing housing structure according to claim 1, characterized in that: The heat dissipation ring (22) is integrally injection molded onto the support wall (21).

6. The bearing housing structure according to claim 1, characterized in that: The thermal conductivity of the heat dissipation ring (22) is greater than that of the support wall (21).

7. The bearing housing structure according to claim 1, characterized in that: The support wall (21) is made of nylon material; and / or the heat dissipation ring (22) is made of BMC material.

8. The bearing housing structure according to claim 1, characterized in that: The outer peripheral surface of the bearing wall (2) is provided with multiple heat dissipation protrusions (221).

9. An electric motor, the electric motor comprising an upper bearing housing structure and a lower bearing housing structure, characterized in that: The upper bearing chamber structure and / or the lower bearing chamber structure adopt the bearing chamber structure as described in any one of claims 1-8.

10. A water heater, characterized in that: The water heater includes the motor as described in claim 9.

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