Motor rotor hot drying device

Abstract

The invention relates to a motor rotor hot drying device which comprises a heat conduction cylinder which is arranged around a first axis, the two ends of the heat conduction cylinder in the direction of the first axis are communicated, a feeding port is formed in the side wall of the heat conduction cylinder, and the heat conduction cylinder is connected with a movable door used for opening or closing the feeding port; the two heat-conducting plates are arranged in the heat-conducting cylinder, the heat-conducting plates are perpendicular to the first axis, the two heat-conducting plates are arranged at intervals in the direction of the first axis, the feeding port is located between the two heat-conducting plates, the peripheries of the heat-conducting plates are attached to the inner wall of the heat-conducting cylinder, the heat-conducting plates can move relative to the heat-conducting cylinder in the direction of the first axis, and a heating cavity is formed between the two heat-conducting plates; a heat source is arranged on one side of the heat-conducting plate away from the heating cavity. The distance between the two heat conducting plates can be adjusted according to the size of a workpiece to be heated, the proper distance is kept between a heat source and the workpiece, the heat transfer distance is shortened, the size of the heating cavity is adjusted accordingly, heat loss can be reduced, the energy utilization rate is increased, and the good heating effect on the workpiece is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of thermal baking and curing of insulating parts in the manufacture of motor rotors, and in particular to a thermal baking device for motor rotors. Background Art

[0002] The motor rotor is an important part of the motor. The rotor rotates at high speed during operation. Some motor rotor structures are embedded with copper wires, and the ends of the copper wires are protected by an insulating layer in the circumferential direction. The insulating layer is formed by the insulating tape wrapped around the rotor and then heated at a constant temperature. During the heating, the insulating layer is required to be evenly heated, so high requirements are placed on the oven.

[0003] When the rotor insulation layer is heated in a constant temperature oven, the rotor must be placed in the center of the oven cavity to ensure uniform heating. The traditional oven cavity size is generally designed to be large, which can be used for the heat drying of rotors within a certain size range. However, when a smaller rotor is heated, the rotor is far away from the heat source at the center of the oven cavity, and the heat is severely lost when it is transferred from the heat source to the rotor, resulting in low energy utilization. Summary of the invention

[0004] Based on the above description, the present invention provides a motor rotor thermal drying device to solve the problem of severe heat loss and low energy utilization when a traditional oven performs thermal drying on a smaller-sized rotor.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] The present application provides a motor rotor thermal drying device, and the technical solution adopted is as follows:

[0007] A motor rotor thermal drying device, comprising:

[0008] A heat-conducting tube, which is arranged around the first axis, and the two ends of the heat-conducting tube in the direction of the first axis are connected, a feed port is provided on the side wall of the heat-conducting tube, and the heat-conducting tube is connected to a movable door for opening or closing the feed port;

[0009] Two heat conducting plates are arranged in the heat conducting tube, the heat conducting plates are perpendicular to the first axis, the two heat conducting plates are arranged at intervals along the first axis, the heat conducting plates are in contact with the inner wall of the heat conducting tube on all sides, the heat conducting plates can move relative to the heat conducting tube along the first axis, a heating cavity is formed between the two heat conducting plates, the feed port is connected to the heating cavity, and a heat source is provided on the side of the heat conducting plate away from the heating cavity.

[0010] Preferably, the heat-conducting cylinder is arranged in and fixed to the heat-insulating box body, the heat-insulating box body is provided with an opening near the feed port, the heat-insulating box body is connected to an heat-insulating door for opening or closing the opening, the movable door is connected to the heat-insulating door, when the heat-insulating door opens the opening, the movable door opens the feed port, and when the heat-insulating door closes the opening, the movable door closes the feed port.

[0011] Preferably, a driving assembly for driving the heat conduction plate to move is provided between the heat conduction plate and the insulation box body, and the driving assembly includes a driving screw, the axis of the driving screw is parallel to the first axis, one end of the driving screw is rotatably connected to the heat conduction plate, and the other end passes through the insulation box body, and the driving screw is threadedly connected to the insulation box body.

[0012] Preferably, a heat source is provided on the outer wall of the heat-conducting cylinder.

[0013] Preferably, a plurality of heat sources are provided on the outer wall of the heat-conducting tube, the plurality of heat sources are distributed at intervals along the first axis direction, and each heat source can be switched on and off individually.

[0014] Preferably, the heat source includes a heating wire or a heating plate.

[0015] Preferably, it also includes a temperature control system, which includes a temperature measuring element and a controller. The temperature measuring element is arranged in the heating cavity. The temperature measuring element is used to be connected to the workpiece to be heated to measure the temperature near the insulating layer of the workpiece. The temperature measuring element and the heat source are both connected to the controller.

[0016] Preferably, a bracket connected to the heat-conducting cylinder is provided in the heating cavity, and the bracket is used to support the workpiece to be heated.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0018] 1. The present application forms a heating cavity by a heat-conducting tube and two heat-conducting plates. The heat generated by the heat source is transferred to the heating cavity through the heat-conducting plates, so that the temperature in the heating cavity reaches the working temperature, so as to heat the workpiece placed in the heating cavity. A feed port and a movable door are provided on the heat-conducting tube so that the workpiece can be placed in the heating cavity, and the feed port is closed by the movable door during heating to seal the heating cavity and reduce heat loss; the movable setting of the heat-conducting plate can adjust the distance between the two heat-conducting plates according to the volume of the workpiece to be heated, so that the heat source and the workpiece can maintain a suitable distance, shorten the distance of heat transfer to the workpiece, and the size of the heating cavity is also adjusted accordingly, thereby reducing heat loss, improving energy utilization, and ensuring a good heating effect on the workpiece;

[0019] 2. This application provides a heat-insulating box body and places the heat-conducting tube inside the heat-insulating box body, which can further reduce heat loss and the energy consumption required to maintain the temperature inside the heat-conducting tube. At the same time, a driving screw is provided to drive the heat-conducting plate to move, which is convenient for personnel to control the movement of the heat-conducting plate outside the heat-insulating box body, making the heat-conducting plate position adjustment operation more convenient and safe;

[0020] 3. In the present application, a heat source is arranged outside the heat-conducting tube, so that the temperature distribution in the heating cavity can be more uniform and the temperature rises faster. By arranging multiple heat sources outside the heat-conducting tube, the multiple heat sources are distributed at intervals along the first axis direction, and each heat source can be turned on and off individually. According to the size of the heating cavity, the heat source located within the heating cavity can be controlled to be turned on, and other heat sources can remain turned off, thereby avoiding unnecessary energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a motor rotor thermal drying device provided in an embodiment of the present invention.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1. Heat-conducting cylinder; 11. Feed inlet; 12. Movable door; 2. Heat-conducting plate; 3. Heating cavity; 4. Bracket; 5. Heat-insulating box; 51. Opening; 52. Heat-insulating door; 53. Mounting block; 6. Driving screw; 7. Heat source; 8. Temperature measuring element; 9. Controller. DETAILED DESCRIPTION

[0024] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] Reference Figure 1 As shown, an embodiment of the present application provides a motor rotor thermal drying device, which includes a heat-conducting tube 1 and two heat-conducting plates 2. The heat-conducting tube 1 is arranged around a first axis, and the two ends of the heat-conducting tube 1 in the direction of the first axis are connected. A feed port 11 is provided on the side wall of the heat-conducting tube 1, and the heat-conducting tube 1 is connected with a movable door 12 for opening or closing the feed port 11; the heat-conducting plates 2 are arranged in the heat-conducting tube 1, and the heat-conducting plates 2 are perpendicular to the first axis. The two heat-conducting plates 2 are arranged at intervals along the direction of the first axis. The heat-conducting plates 2 are in contact with the inner wall of the heat-conducting tube 1 on all sides, and the heat-conducting plates 2 can move relative to the heat-conducting tube 1 along the direction of the first axis. A heating cavity 3 is formed between the two heat-conducting plates 2, and the feed port 11 is connected to the heating cavity 3. A heat source 7 is provided on the side of the heat-conducting plate 2 away from the heating cavity 3.

[0030] Specifically, the heat-conducting tube 1 and the heat-conducting plate 2 are both made of heat-conducting materials. The cross-section of the heat-conducting tube 1 can be set to be circular or rectangular, and the shape of the heat-conducting plate 2 is designed to be circular or rectangular according to the cross-sectional shape of the heat-conducting tube 1. The shape is selected according to actual needs. In this embodiment, the heat-conducting tube 1 has a circular cross-section, and the heat-conducting plate 2 is a circular plate.

[0031] Reference Figure 1 As shown, further, a bracket 4 fixed on the heat-conducting tube 1 is provided in the heating cavity 3, and the bracket 4 is used to support the workpiece to be heated. The bracket 4 is designed according to the needs so that the workpiece can be heated by the bracket 4 support belt.

[0032] Reference Figure 1 As shown, further, in order to reduce the heat loss, an insulating box 5 is provided, the heat-conducting cylinder 1 is arranged in the insulating box 5 and fixed to the insulating box 5, an opening 51 is provided on the insulating box 5 near the feed port 11, an insulating door 52 for opening or closing the opening 51 is connected to the insulating box 5, and a movable door 12 is connected to the insulating door 52. When the insulating door 52 opens the opening 51, the movable door 12 opens the feed port 11, and when the insulating door 52 closes the opening 51, the movable door 12 closes the feed port 11. Specifically, the shape of the insulating box 5 is designed according to actual needs, and can be made of insulating materials as a whole, or insulating materials are pasted on the inner wall to form an insulating space in the insulating box 5. The size of the opening 51 on the insulating box 5 needs to be larger than the size of the feed port 11 to ensure that the workpiece can pass through the opening 51 and the feed port 11. The insulating door 52 can be hinged to the insulating box 5 by a hinge, and ensure that the insulating door 52 can be rotated to open or close the opening 51. At the same time, the movable door 12 is fixed on the thermal insulation door 52, so that the movable door 12 rotates with the thermal insulation door 52. When the thermal insulation door 52 rotates to open the opening 51, the movable door 12 moves with the thermal insulation door 52 to the outside of the insulation box 5 to open the feed port 11. When the thermal insulation door 52 closes the opening 51, the movable door 12 moves with the thermal insulation door 52 to fit the outer wall of the heat conductive tube 1 and cover the feed port 11, thereby closing the feed port 11.

[0033] Reference Figure 1As shown, further, in order to facilitate the adjustment of the position of the heat conducting plate 2, a driving assembly for driving the heat conducting plate 2 to move is provided between the heat conducting plate 2 and the heat insulating box 5, and the driving assembly includes a driving screw 6, the axis of the driving screw 6 is parallel to the first axis, one end of the driving screw 6 is rotatably connected to the heat conducting plate 2, and the other end passes through the heat insulating box 5, and the driving screw 6 is threadedly connected to the heat insulating box 5. Specifically, the driving screw 6 is provided on the side of the heat conducting plate 2 away from the heat insulating cavity, one end of the driving screw 6 is rotatably connected to the heat conducting plate 2 through a bearing, and the other end passes through the heat insulating box 5. In order to realize the threaded connection between the driving screw 6 and the heat insulating box 5, a mounting block 53 threadedly connected thereto is sleeved on the driving screw 6, and the mounting block 53 is located outside the heat insulating box 5 and fixed on the outer wall of the heat insulating box 5, so that when the driving screw 6 rotates, it moves axially relative to the heat insulating box 5, thereby driving the heat conducting plate 2 to move along the first axis direction. A handle may also be provided at one end of the driving screw rod 6 outside the heat-insulating box body 5 to facilitate rotation by an operator.

[0034] Reference Figure 1 As shown, further, in order to make the temperature distribution in the heating cavity 3 uniform, a heat source 7 is also provided on the outer wall of the heat-conducting tube 1. Specifically, a plurality of heat sources 7 are provided on the outer wall of the heat-conducting tube 1, and the plurality of heat sources 7 are spaced apart along the first axis direction, and each heat source 7 can be switched on and off separately. The heat source 7 provided on the outer wall of the heat-conducting tube 1 emits heat and is transferred to the heating cavity 3 through the heat-conducting tube 1, and the heat source 7 on the heat-conducting plate 2 generates heat and is transferred to the heating cavity 3 through the heat-conducting plate 2. The cooperation between the heat-conducting tube 1 and the heat-conducting plate 2 can make the heating cavity 3 uniformly heated, and the temperature in the heating cavity 3 is uniformly distributed, so as to uniformly heat the workpiece. The arrangement of the plurality of heat sources 7 outside the heat-conducting tube 1, the plurality of heat sources 7 are spaced apart along the first axis direction, and each heat source 7 can be switched on and off separately. According to the size of the heating cavity 3, the heat source 7 located between the two heat-conducting plates 2 can be controlled to be turned on, and the other heat sources 7 remain closed, so that the heat generated by the heat source 7 can be transferred to the heating cavity 3, avoiding unnecessary energy consumption.

[0035] The heat source 7 on the heat conducting plate 2 and the heat source 7 on the heat conducting tube 1 can both be electric heating wires or electric heating plates. When the heat source 7 on the heat conducting plate 2 is arranged, it is ensured that the heat conducting plate 2 is evenly heated everywhere. When the heat source 7 on the heat conducting tube 1 is arranged, it is necessary to ensure that the heat conducting tube 1 is evenly heated everywhere in the circumference, thereby ensuring that the temperature distribution in the heating cavity 3 is uniform. In this embodiment, the heat source 7 is illustrated as an electric heating plate.

[0036] Reference Figure 1As shown, further, in order to realize the control of the drying temperature, a temperature control system is provided, which includes a temperature measuring element 8 and a controller 9. The temperature measuring element 8 is provided in the heating cavity 3. The temperature measuring element 8 is used to be connected to the workpiece to be heated to measure the temperature near the insulating layer of the workpiece. The temperature measuring element 8 and the heat source 7 are both connected to the controller 9. Specifically, the temperature measuring element 8 can be a temperature sensor, which is connected to the controller 9 arranged outside the heat-insulating box 5 through a line. After the workpiece is placed in the heating cavity 3, the temperature measuring element 8 is connected near the insulating layer on the workpiece to detect the temperature near the insulating layer of the temperature measuring element 8. The controller 9 controls the output power of the heat source 7 according to the temperature data measured by the temperature measuring element 8 so that the temperature near the insulating layer of the workpiece is maintained within a suitable range, thereby realizing the control of the heating temperature of the workpiece.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A motor rotor heating device, characterized in that: include: A heat-conducting tube (1) is arranged around a first axis, and the heat-conducting tube (1) is connected at both ends in the direction of the first axis, a feed port (11) is provided on a side wall of the heat-conducting tube (1), and the heat-conducting tube (1) is connected to a movable door (12) for opening or closing the feed port (11); Two heat conducting plates (2) are arranged in the heat conducting tube (1), the heat conducting plates (2) are perpendicular to the first axis, the two heat conducting plates (2) are arranged at intervals along the direction of the first axis, the heat conducting plates (2) are in contact with the inner wall of the heat conducting tube (1) on all sides, the heat conducting plates (2) can move relative to the heat conducting tube (1) along the direction of the first axis, a heating cavity (3) is formed between the two heat conducting plates (2), the feed port (11) is connected to the heating cavity (3), and a heat source (7) is provided on the side of the heat conducting plate (2) away from the heating cavity (3).

2. The motor rotor heating device according to claim 1, characterized in that: The heat-conducting cylinder (1) is arranged in a heat-insulating box (5) and fixed to the heat-insulating box (5); an opening (51) is provided on the heat-insulating box (5) near the feed port (11); an heat-insulating door (52) for opening or closing the opening (51) is connected to the heat-insulating box (5); the movable door (12) is connected to the heat-insulating door (52); when the heat-insulating door (52) opens the opening (51), the movable door (12) opens the feed port (11); when the heat-insulating door (52) closes the opening (51), the movable door (12) closes the feed port (11).

3. The motor rotor heating device according to claim 2, characterized in that: A driving assembly for driving the heat conducting plate (2) to move is provided between the heat conducting plate (2) and the heat insulating box (5), and the driving assembly comprises a driving screw (6), the axis of the driving screw (6) is parallel to the first axis, one end of the driving screw (6) is rotatably connected to the heat conducting plate (2), and the other end passes through the heat insulating box (5), and the driving screw (6) is threadedly connected to the heat insulating box (5).

4. The motor rotor heating device according to claim 1, characterized in that: A heat source (7) is provided on the outer wall of the heat-conducting cylinder (1).

5. The motor rotor heating device according to claim 4, characterized in that: A plurality of heat sources (7) are arranged on the outer wall of the heat-conducting tube (1), the plurality of heat sources (7) are distributed at intervals along the first axis direction, and each heat source (7) can be switched on and off individually.

6. The motor rotor heating device according to claim 1, characterized in that: The heat source (7) comprises an electric heating wire or an electric heating plate.

7. The motor rotor heating device according to claim 1, characterized in that: The invention also comprises a temperature control system, which comprises a temperature measuring element (8) and a controller (9). The temperature measuring element (8) is arranged in the heating cavity (3). The temperature measuring element (8) is used to be connected to the workpiece to be heated to measure the temperature near the insulating layer of the workpiece. The temperature measuring element (8) and the heat source (7) are both connected to the controller (9).

8. The motor rotor heating device according to claim 1, characterized in that: A bracket (4) connected to the heat-conducting cylinder (1) is provided in the heating cavity (3), and the bracket (4) is used to support a workpiece to be heated.

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