Linear motor

Abstract

The utility model provides a linear motor, which relates to the technical field of motor structure design, and comprises a motor iron core, a winding coil and a cooling pipeline, the tooth part of the motor iron core is inserted in the winding coil, the cooling pipeline comprises a water inlet pipe, a draft tube and a plurality of cooling coils, the cooling coils are arranged corresponding to the winding coils respectively, the water inlet ends of the cooling coils are communicated with the water inlet pipe, and the water outlet ends of the cooling coils are communicated with the draft tube. The water inlet pipe can provide the cooling liquid with the temperature tending to be consistent and low for the cooling coil pipes at the same time, so that the cooling liquid can absorb and take away heat of the corresponding winding coils, and all the winding coils can effectively and rapidly dissipate heat at the same time. According to the utility model, all winding coils can be effectively ensured to be rapidly cooled, the problem of motor damage or unstable work caused by heat accumulation is avoided, the use reliability of the linear motor can be effectively ensured, and the service life of the linear motor is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of motor structure design technology, specifically to a linear motor. Background Technology

[0002] A linear motor is a device that converts electrical energy into linear motion mechanical energy. Due to its advantages such as high stability, high speed, high precision, long service life, and high reliability, linear motors are widely used in the manufacture of electronic components, semiconductor equipment, laser processing, and precision machine tools.

[0003] For linear motors, heat dissipation performance directly affects their service life and performance. However, current heat dissipation designs still have certain shortcomings.

[0004] For example, in Chinese patent document CN116131533B, the heat dissipation design is achieved by a cooling pipe that surrounds and abuts the teeth. This cooling pipe, with its structure of flat bent tubes and flat straight tubes, can effectively conduct the heat of the winding coils out of the linear motor. However, the coolant flows unidirectionally along the cooling pipe. As the coolant gradually flows, the heat it absorbs gradually increases, and the temperature also increases. For the subsequent winding coils, the heat absorption performance of the high-temperature coolant will decrease rapidly, making it difficult to achieve effective and rapid heat dissipation for all winding coils. Utility Model Content

[0005] In order to solve the technical problems in related technologies, this utility model provides a linear motor.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a linear motor, including a motor core and a winding coil, wherein the teeth of the motor core are inserted into the winding coil, and a cooling pipe is also included. The cooling pipe includes an inlet pipe, a tailpipe, and a plurality of cooling coils, wherein the plurality of cooling coils are respectively arranged corresponding to the winding coils and the inlet end of the cooling coil is connected to the inlet pipe, and the outlet end of the cooling coil is connected to the tailpipe.

[0007] Optionally, the cooling coil includes a coil body and a first water channel and a second water channel formed within the coil body. The inlet end of the first water channel is connected to the water inlet pipe, the outlet end of the first water channel is connected to the inlet end of the second water channel, and the outlet end of the second water channel is connected to the tailwater pipe.

[0008] The first waterway and the second waterway are arranged adjacent to each other.

[0009] Optionally, the coil body is formed into a disc-shaped structure, the first water channel and the second water channel are both formed into a spiral structure, and the connection between the first water channel and the second water channel is located at the center of the coil body.

[0010] Optionally, the coil body, the first water channel, and the second water channel are integrally formed.

[0011] Optionally, the cooling pipes are configured as two, with the two cooling pipes respectively located on both sides of the motor core and used to correspond to the winding coils.

[0012] Optionally, the linear motor further includes a housing, which covers the motor core, the winding coil and the cooling pipe, and the housing has a water inlet corresponding to the water inlet pipe and a tailwater inlet corresponding to the tailwater pipe.

[0013] Beneficial effects:

[0014] 1. Through the above technical solution, when the coolant enters the linear motor through the cooling pipes, the inlet pipe can simultaneously provide several cooling coils with coolant at a relatively uniform and low temperature. In this way, the coolant in each cooling coil can absorb and carry away the heat from its corresponding winding coil, effectively enabling all winding coils to dissipate heat simultaneously and rapidly. Furthermore, this effectively ensures that all winding coils cool down quickly, avoiding heat accumulation that could lead to motor damage or instability, thus effectively guaranteeing the reliability of the linear motor and extending its service life.

[0015] 2. Other beneficial effects or advantages of this utility model will be described in detail in conjunction with the specific structure in the specific embodiments. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, it should be understood that the proportional relationship of each component in the drawings of this specification does not represent the proportional relationship in the actual material selection and design, but is only a schematic diagram of the structure or position, wherein:

[0017] Figure 1 This is a three-dimensional structural diagram of a linear motor provided in an exemplary embodiment of the present invention.

[0018] Figure 2This is a three-dimensional structural schematic diagram of a linear motor provided in an exemplary embodiment of the present invention, from another perspective.

[0019] Figure 3 This is a schematic diagram of the assembly structure of the motor core, winding coil and cooling pipe provided in an exemplary embodiment of this utility model;

[0020] Figure 4 This is a partial cross-sectional view of a cooling coil provided in an exemplary embodiment of the present invention, which also shows a portion of the inlet pipe and the outlet pipe.

[0021] Figure 5 This is a schematic diagram showing the direction of coolant flow within the cooling coils.

[0022] Explanation of the labels in the attached drawings:

[0023] 100-Linear motor; 1-Motor core; 11-Gear; 2-Winding coil; 3-Cooling pipe; 31-Water inlet pipe; 32-Tail water pipe; 33-Cooling coil; 331-Coil body; 332-First water channel; 333-Second water channel; 4-Encapsulation shell; 41-Water inlet hole; 42-Tail water hole. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] To facilitate a clearer and more accurate understanding of the technical solution of this utility model by those skilled in the art, the following further explains the problems existing in the prior art.

[0027] Taking the Chinese patent document with publication number CN116131533B (linear motor) as an example, its cooling pipe is unidirectional. That is, the coolant enters the cooling pipe from the inlet and flows along the flat straight pipe and flat curved pipe of the cooling pipe. During the flow, the coolant gradually absorbs the heat dissipated by the winding coil and carries this part of the heat out of the linear motor through the outlet.

[0028] However, in the direction of coolant flow, the coolant first absorbs heat from the upstream winding coils, causing its temperature to rise to a certain extent. Consequently, when the coolant flows through the downstream winding coils, its heat absorption capacity is weaker, making it difficult to quickly and effectively absorb heat from the downstream winding coils. This results in the upstream winding coils being able to dissipate heat effectively, but the downstream winding coils not dissipating heat well, and failing to achieve effective and rapid heat dissipation for all winding coils.

[0029] This invention provides a novel solution: a linear motor. By redesigning the cooling pipe structure, this linear motor effectively dissipates heat from all winding coils in a timely, rapid, and efficient manner, ensuring the reliability of the linear motor and extending its service life.

[0030] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] like Figures 1 to 5 As shown, this embodiment provides a linear motor 100, including a motor core 1 and a winding coil 2. The teeth 11 of the motor core 1 are inserted into the winding coil 2. It also includes a cooling pipe 3, which includes a water inlet pipe 31, a water outlet pipe 32, and a plurality of cooling coils 33. The plurality of cooling coils 33 are respectively arranged corresponding to the winding coil 2, and the water inlet end of the cooling coil 33 is connected to the water inlet pipe 31, and the water outlet end of the cooling coil 33 is connected to the water outlet pipe 32.

[0032] Through the above technical solution, when the coolant enters the linear motor 100 through the cooling pipe 3, the inlet pipe 31 can simultaneously provide a relatively low-temperature coolant to several cooling coils 33. In this way, the coolant in each cooling coil 33 can absorb and carry away the heat from its corresponding winding coil 2, effectively enabling all winding coils 2 to dissipate heat efficiently and quickly. Furthermore, this effectively ensures that all winding coils 2 can cool down rapidly, avoiding heat accumulation that could lead to motor damage or unstable operation. This effectively guarantees the reliability of the linear motor 100 and extends its service life.

[0033] It is understandable that, since the delivery and handling of coolant is a very mature technology in the existing related technologies, this application will not elaborate on other cooling-related structures (e.g., water pumps, filters, connectors, etc.).

[0034] In one embodiment of this utility model, such as Figures 3 to 5 As shown, the cooling coil 33 of this utility model may include a coil body 331 and a first water channel 332 and a second water channel 333 formed in the coil body 331. The inlet end of the first water channel 332 is connected to the water inlet pipe 31, the outlet end of the first water channel 332 is connected to the inlet end of the second water channel 333, and the outlet end of the second water channel 333 is connected to the tailwater pipe 32. The first water channel 332 and the second water channel 333 are arranged adjacent to each other.

[0035] In this way, the first water channel 332 and the second water channel 333 are configured in this manner, which not only effectively extends the flow path of the coolant, but also effectively increases the flow time of the coolant in the cooling coil 33. This ensures that the coolant can fully absorb the heat generated by the winding coil 2, guaranteeing the cooling effect. Moreover, by arranging the first water channel 332 and the second water channel 333 adjacent to each other, secondary heat exchange can also be carried out by the coolant during its transport in the cooling coil 33. For example, please refer to... Figure 5 When the coolant flows into the second water channel 333, the coolant in the second water channel 333 will exchange heat with the coolant in the adjacent first water channel 332, further balancing the temperature of the coolant, so that the coolant can more fully absorb the heat generated by the winding coil 2, thereby further improving the cooling effect.

[0036] It is understood that the arrangement of the first waterway 332 and the second waterway 333 can be implemented in various ways. For example, in one embodiment of the present invention, the first waterway 332 and the second waterway 333 can be formed as parallel straight waterways (correspondingly, the coil body 331 can be formed as a corresponding rectangular structure, such as a rectangular disc structure).

[0037] In another embodiment of this utility model, such as Figure 4 and Figure 5 As shown, the coil body 331 of this utility model can be formed into a disc-shaped structure, the first water channel 332 and the second water channel 333 are both formed into a spiral structure, and the connection between the first water channel 332 and the second water channel 333 is located at the center of the coil body 331.

[0038] Thus, by configuring the first water channel 332 and the second water channel 333 in this way, the resulting coolant delivery pipeline is a continuous curved shape with a small bending angle, which can effectively reduce the bend loss of coolant and effectively extend the flow time of coolant in the cooling coil 33. This not only ensures the heat absorption effect of coolant but also effectively enhances the mutual heat exchange effect of coolant during the flow process, further improving the cooling effect.

[0039] In one embodiment of this invention, the coil body 331, the first water channel 332, and the second water channel 333 can be integrally formed. On one hand, integral forming allows for a tighter fusion of the materials inside and outside the cooling coil 33, effectively preventing coolant leakage due to material delamination and thus reducing the risk of motor damage. On the other hand, integral forming achieves a more uniform wall thickness distribution and dimensional consistency, effectively ensuring coolant flow efficiency and thus guaranteeing cooling efficiency.

[0040] In one embodiment of this utility model, such as Figure 3 As shown, the present invention has two cooling pipes 3, which are respectively located on both sides of the motor core 1 and are used to correspond to the winding coil 2.

[0041] In this way, the cooling pipes 3 located on both sides of the motor core 1 can cool all the winding coils 2 respectively, so as to effectively ensure the heat dissipation effect.

[0042] In one embodiment of this utility model, such as Figure 1 and Figure 2 As shown, the linear motor 100 of this utility model may also include a housing 4, which covers the motor core, winding coil 2 and cooling pipe 3. The housing 4 has a water inlet hole 41 corresponding to the water inlet pipe 31 and a tailwater hole 42 corresponding to the tailwater pipe 32.

[0043] In this way, on the one hand, the encapsulation shell 4 can protect the cooling pipe 3, preventing spatial interference between the cooling pipe 3 and other structures or components during motor operation, and effectively preventing damage to the cooling pipe 3; on the other hand, the encapsulation shell 4 can restrict the position of the cooling pipe 3 (through the limiting effect of its own accommodating space and the limiting effect of the water inlet 41 and the tailpipe 32), so that the cooling pipe 3 can be reliably installed inside the encapsulation shell 4, which can also maintain the positional stability of the cooling pipe 3 and ensure the reliable operation of the cooling pipe 3 for a long time.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A linear motor, comprising a motor core (1) and a winding coil (2), wherein the teeth (11) of the motor core (1) are inserted into the winding coil (2), characterized in that, It also includes a cooling pipe (3), which includes an inlet pipe (31), a tailwater pipe (32) and several cooling coils (33). The several cooling coils (33) are respectively arranged corresponding to the winding coil (2), and the water inlet end of the cooling coil (33) is connected to the inlet pipe (31), and the water outlet end of the cooling coil (33) is connected to the tailwater pipe (32).

2. The linear motor according to claim 1, characterized in that, The cooling coil (33) includes a coil body (331) and a first water channel (332) and a second water channel (333) formed in the coil body (331). The inlet end of the first water channel (332) is connected to the water inlet pipe (31), the outlet end of the first water channel (332) is connected to the inlet end of the second water channel (333), and the outlet end of the second water channel (333) is connected to the tailwater pipe (32). The first waterway (332) and the second waterway (333) are arranged adjacent to each other.

3. The linear motor according to claim 2, characterized in that, The coil body (331) is formed into a disc-shaped structure, the first water channel (332) and the second water channel (333) are both formed into a spiral structure, and the connection between the first water channel (332) and the second water channel (333) is located at the center of the coil body (331).

4. The linear motor according to claim 2, characterized in that, The coil body (331), the first water channel (332) and the second water channel (333) are integrally formed.

5. The linear motor according to claim 1, characterized in that, The cooling pipes (3) are configured as two, and the two cooling pipes (3) are respectively located on both sides of the motor core (1) and are used to correspond to the winding coils (2).

6. The linear motor according to any one of claims 1-5, characterized in that, The linear motor also includes a housing (4), which covers the motor core (1), the winding coil (2) and the cooling pipe (3). The housing (4) has a water inlet (41) corresponding to the water inlet pipe (31) and a tailwater hole (42) corresponding to the tailwater pipe (32).

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