CN104702048B - A kind of motor heat ray filter - Google Patents

Abstract

The invention provides a motor heat insulation device. The device includes a base plate, a cooling pipe, and several heat insulators. The vertical height direction of the heat insulator is the up-and-down direction. The lower surface of each heat insulator is connected to the upper surface of the primary motor, and the upper surface of each The surface is connected to the lower surface of the substrate; the cooling pipe is fixedly connected to the lower surface of the substrate and coiled around the heat insulator; the vertical height of each heat insulator is greater than that of the cooling pipe. Compared with the prior art, in this device, since the heat insulator is separated from the cooling pipe, the structure of the heat insulator is simple, easy to manufacture, and the thickness of the device is reduced, thereby increasing the installation stability of the motor; in addition, the motor in the device The heat generated by the primary stage is directly transferred to the base plate through the heat insulator, and then cooled by the cooling unit, which not only has high heat insulation efficiency, but also spreads the heat evenly after being conducted through the base plate, so that it is not easy to accumulate locally and cause heat imbalance, which improves the The working accuracy of the motor.

Description

A motor heat insulation device

technical field

The invention belongs to the technical field of motors, and in particular relates to a motor heat insulation device.

Background technique

During the operation of the motor, the primary side of the motor usually generates heat continuously. In some occasions, the primary of the motor is directly connected to the load, causing the heat of the primary of the motor to be directly transferred to the load, thereby increasing the temperature of the load and causing thermal deformation of the load. Especially in high-precision automation applications, the increase in load temperature will cause thermal deformation and affect system accuracy and system performance. This phenomenon is more obvious in high-speed and high-precision motion systems directly driven by linear motors.

For this reason, those skilled in the art usually adopt two methods: (1) use a good thermal conductor such as a metal material to conduct the heat generated by the primary stage of the motor, and then dissipate heat through heat radiation or heat conversion; (2) in the primary stage of the motor Integrated cooling units such as cooling pipes can directly dissipate the heat generated by the primary stage of the motor.

These methods can reduce the impact of motor primary heat on the load to a certain extent, but as the running time increases, the heat accumulation in the primary of the motor will still affect the load. In order to solve the problem of motor primary heat accumulation, those skilled in the art usually add one or a group of heat insulation blocks between the motor primary and the workbench to isolate the heat generated by the motor primary, thereby eliminating the impact of motor primary heat accumulation on the load . However, over time the insulation blocks can also affect the load due to heat buildup. For this reason, those skilled in the art usually add cooling pipe holes on the heat insulation block, and the cooling pipe passes through the heat insulation block through the cooling pipe holes on the heat insulation block, thereby reducing the accumulated heat on the heat insulation block. For example, patent WO2003021756 discloses a motor heat insulation device, including a base plate and a cooling unit connected to the base plate, and several heat insulators are arranged between the base plate and the motor primary; along the vertical height direction of the heat insulator, each heat insulator The lower end is directly connected to the primary surface of the motor, and the upper end passes through the upper surface of the base plate; and a hollow channel is arranged inside each heat insulator, and the cooling unit passes through the corresponding hollow channel. Because the device adds a heat insulator, on the one hand, it is beneficial to the fixing of the cooling unit, and on the other hand, it is beneficial to the heat insulator that has accumulated a certain amount of heat to dissipate heat effectively through the cooling unit. But, there is following deficiency in this device:

(1) A hollow channel is set inside the heat insulator, and the cooling unit passes through the heat insulator through the hollow channel. On the one hand, the structure of the insulator is complicated, and the preparation process is more difficult. On the other hand, the thickness of the insulator increases, which makes the motor The increased distance between the primary and the load will easily reduce the rigidity and stability of the primary installation structure of the motor;

(2) In this device, the cooling unit passes through the heat insulator, and the heat insulator passes through the substrate, so the contact area between the heat insulator and the substrate is limited, and the heat accumulated on the heat insulator is mainly cooled by the cooling unit, and the substrate Has little cooling effect on insulators with accumulated heat. In this way, the cooling system needs to provide the cooling unit with sufficient coolant flow and cooling power. Otherwise, once the heat accumulation rate of a heat insulator exceeds the heat dissipation capacity of the cooling unit, it is easy to cause the accumulated heat of the heat insulator to be difficult to dissipate. The local temperature rise and local thermal deformation of the load are caused, which in turn affects the motion accuracy and stability of the system. Therefore, the cooling unit supporting the device often needs to maintain a relatively high coolant flow rate and cooling power to prevent the heat accumulation rate of some heat shields from exceeding the heat dissipation capacity of the cooling unit due to excessive local heat in the primary side of the motor.

In order to solve the problems of large thickness, high energy consumption and complex shape and process of the heat insulation device of the above-mentioned motor heat insulation device, and then improve the heat insulation uniformity and heat insulation efficiency of the heat insulation device, reduce the cost of the device, and increase the heat insulation For the structural rigidity of the moving parts consisting of the device, the primary motor and the load, it is necessary to provide a motor heat insulation device with simple shape and process, small thickness, good heat insulation efficiency and uniformity of the heat insulation element.

Contents of the invention

Aiming at the above-mentioned technical status, the present invention provides a motor heat insulation device, which has a simple structure and a small thickness, can effectively isolate the heat generated by the primary stage of the motor, and has good heat insulation uniformity.

The technical solution of the present invention is: a heat insulation device for a motor, including a base plate, a cooling pipe, and several heat insulators. It is in contact with the upper surface of the motor primary, and the upper surface of each heat insulator is in contact with the lower surface of the base plate; the cooling pipe is fixedly connected to the lower surface of the base plate and coiled around the heat insulator; the vertical height of each heat insulator is greater than the vertical height of the cooling tube.

That is, the present invention separates the heat insulator in the motor heat insulation device from the cooling pipe, and directly fixes the cooling pipe on the lower surface of the substrate. The motor heat insulation device with this structure has the following beneficial effects:

(1) The structure of the heat insulator is simple, which reduces the difficulty of the manufacturing process, thereby reducing the cost; at the same time, because the heat insulator is separated from the cooling pipe, its thickness is reduced, thereby increasing the rigidity and stability of the primary installation structure of the motor;

(2) In this structure, the heat insulator does not pass through the substrate, but is in close contact with the lower surface of the substrate. At the same time, the cooling pipe is fixedly connected to the lower surface of the substrate and coiled around the heat insulator. The heat dissipation method of this structure is: Most of the heat generated by the primary stage of the motor is isolated by the heat insulator, and a small amount of heat will accumulate on the heat insulator. When a small amount of heat accumulates on the heat insulator, the heat insulator will conduct the accumulated heat to the substrate, and then, On the one hand, the cooling pipe close to the heat insulator will timely cool the local adjacent area of the substrate with a small amount of accumulated heat. In this way, it is only necessary to maintain a low coolant flow rate and cooling power to meet the heat dissipation requirements of the heat insulator, thus reducing energy consumption. On the other hand, because the substrate has a large heat conduction area, it has a certain heat dissipation effect on a small amount of accumulated heat, and the substrate will also conduct heat to some similar areas of the substrate near the heat insulator with low heat accumulation and The cooling pipe near this area is localized, so that the temperature of each heat insulator is kept approximately equal to a certain extent, and the cooling pipe can be used to the maximum, so it has better heat dissipation effect and uniformity of heat dissipation.

In the present invention, each heat insulator is located between the primary upper surface of the motor and the lower surface of the substrate. As a preference, the upper surface of each heat insulator is fixedly connected to the lower surface of the substrate, and the lower surface of each heat insulator is connected to the primary upper surface. Surface fixed connection.

There is no limit to the fixed connection method among the above-mentioned base plate, the heat insulator and the primary, including the fixed connection through the first fastener. As an implementation, the first fastener includes a screw, preferably a countersunk screw, a first installation through hole of the substrate provided on the substrate, a heat insulator installation through hole arranged on the heat insulator, and The primary threaded hole on the primary, and the first installation through hole of the base plate, the heat insulator installation through hole are coaxial with the primary threaded hole, screw the screw into the primary through the first installation through hole of the base plate and the heat insulator installation through hole The threaded hole realizes the compression and fixed connection of the base plate, heat insulator and motor primary.

In practical applications, the motor load table is often directly connected to the substrate. Further preferably, a gasket is arranged between the workbench and the base plate. Since the size of the gasket is small and the structure is relatively simple, the processability is good and the accuracy is easy to ensure, so the gasket is arranged between the workbench and the substrate. It is beneficial to reduce the requirement on the shape accuracy of the substrate. At this time, the first fastener may also include a gasket installation through hole arranged on the gasket and a workbench installation through hole arranged on the workbench, the gasket installation through hole and the workbench installation through hole , The first installation through hole of the base plate, the heat insulator installation through hole and the primary threaded hole are coaxial, and the screw passes through the workbench installation hole, the gasket installation hole, the first base plate installation hole and the heat insulator installation hole and then screws into the primary thread hole.

Since there are several heat insulators, in the actual installation process, the upper and lower positions of the heat insulator, the base plate, and the primary are prone to misalignment, which causes installation difficulties. For this reason, preferably, firstly, the substrate is fixedly connected to the heat insulator. There is no limit to the fixed connection method between the substrate and the heat insulator, including the fixed connection through the second fastener. The second fastener includes a screw, preferably a countersunk screw, a second installation through hole of the substrate arranged on the substrate, and a threaded hole arranged on the heat insulator, after the screw passes through the second installation through hole of the substrate Screw into the threaded hole on the heat insulator, so that the upper surface of the heat insulator is closely attached to the lower surface of the substrate, and the heat insulator and the substrate are pressed and fixed.

In the present invention, the cooling pipe is fixedly connected to the lower surface of the substrate, and the implementation manner of the fixed connection is not limited, including fixed connection through a third fastener. As an implementation, the third fastener includes at least one fixing plate, several screws, and several nuts matching the screws; the cooling pipe is located between the lower surface of the base plate and the fixing plate, and the fixing plate is used for The cooling pipe is attached to the lower surface of the substrate; each fixing plate is provided with at least one installation through hole to match it, the substrate is provided with the third installation through hole of the substrate, and the screw passes through the third installation through hole of the substrate on the substrate to fix the After the installation through hole on the plate is screwed and compressed with the nut, the cooling pipe is fixed between the fixed plate and the lower surface of the substrate by thread force, so as to realize the fixed and tight contact between the cooling pipe and the lower surface of the substrate.

In the actual installation process, in order to further align the components, the motor heat insulation device of the present invention also includes a positioning plate. The positioning plate can be a part of the workbench, or can be fixedly installed on the workbench as a separate part. The positioning plate has a reference plane, and the positioning plate reference plane is perpendicular to the lower surface of the workbench. When installing, first put the side of the substrate and the primary side of the motor close to the reference plane of the positioning plate, so that the substrate is aligned with the side of the primary side of the motor, thereby facilitating the positioning of each component.

In the present invention, the motor is not limited, and may be a linear motor, a rotary motor or other motors with special shapes or uses.

The shape of the heat insulator is not limited, including cuboid, cylinder and so on.

Preferably, the vertical thickness of each insulating body is the same.

Preferably, the upper surface and the lower surface of each heat insulator are parallel.

The thickness of the base plate is not limited. As a preference, the vertical thickness of the base plate is less than or equal to the vertical thickness of each heat insulator, and it should be as thin as possible under certain strength conditions.

Preferably, the sum of the maximum vertical thickness of the heat insulator and the vertical thickness of the base plate is 1/50-1/2 of the vertical thickness of the motor primary.

Preferably, the cooling pipe is copper pipe or the like.

Preferably, the heat insulator is made of a material with good heat insulation performance, more preferably a material with good heat insulation performance, strength and processing performance, such as plastic.

Preferably, the substrate is made of a good thermal conductor material, more preferably a material with good thermal conductivity and easy processing, such as an aluminum plate.

The shape of the cooling pipe is not limited, and the section perpendicular to its length direction is a cross section, and the cross-sectional shape of the cooling pipe includes a circle, a ring, a rectangle, a trapezoid, and the like.

On the lower surface of the base plate, the cooling pipe is coiled around the heat insulator, and the specific coiling shape is not limited. In order to balance heat dissipation, preferably, the heat insulators are regularly distributed on the upper surface of the primary. Further preferably, the cooling pipes are uniformly coiled around each heat insulator.

Description of drawings

Fig. 1 is a partial longitudinal sectional structural schematic diagram of a linear motor heat insulation device in Embodiment 1 of the present invention;

Fig. 2 is another longitudinal structural schematic diagram of the linear motor heat insulation device in Embodiment 1 of the present invention;

3 is a schematic diagram of the installation structure of the upper surface of the substrate in the linear motor heat insulation device in Embodiment 1 of the present invention;

Fig. 4 is a schematic diagram of the installation structure of the lower surface of the substrate in the linear motor heat insulation device in Embodiment 1 of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, and do not have any limiting effect on it.

The reference signs in Fig. 1-4 are: primary 1, primary threaded hole 1-1, cooling pipe 2, heat insulator 3, heat insulator installation through hole 3-1, base plate 4, base plate first installation through hole 4 -1, the second installation through hole 4-2 of the base plate, countersunk head screw 5, gasket 6, initial gasket installation through hole 6-1, workbench 7, workbench installation through hole 7-1, fixed plate 8, baseplate The third installation through hole 8-1, countersunk screw 9, nut 10.

Example 1:

In this embodiment, the motor is a linear motor. Fig. 1 is a schematic diagram of a partial longitudinal section of the thermal insulation device for the linear motor, the longitudinal section is perpendicular to the primary motion plane of the linear motor. FIG. 2 is another schematic diagram of a longitudinal section of the thermal insulation device for the linear motor, the longitudinal section is perpendicular to the primary motion plane of the linear motor, and is perpendicular to the longitudinal section in FIG. 1 . Fig. 3 is a diagram of the upper surface mounting structure of the substrate in the linear motor thermal insulation device. Fig. 4 is a diagram of the installation structure on the lower surface of the substrate in the heat insulation device for the linear motor.

As shown in FIGS. 1 to 4 , the heat insulation device includes a base plate 4 , a cooling pipe 2 and N heat insulators 3 , where N is an integer greater than or equal to 1. Each insulator 3 is connected to a primary 1 . Taking the vertical height direction of the heat insulator 3 as the up and down direction, the lower surface of each heat insulator 3 is fixedly connected to the upper surface of the primary 1, and the heat insulators are regularly distributed on the upper surface of the primary 1, and each heat insulator The upper surface of body 3 is fixedly connected with the lower surface of substrate 4 . As shown in FIG. 4 , the cooling pipe 2 is fixedly connected to the lower surface of the base plate 4 and coiled around the heat insulator 3 in a serpentine shape; the vertical height of each heat insulator 3 is greater than that of the cooling pipe 2 .

The load-carrying workbench 7 is located on the upper surface of the base plate 4, and the spacer 6 is arranged and adjusted between the two. The structure of the adjustment spacer 6 is simple, the size is small, so the processability is good, and the accuracy is easy to ensure. Therefore, the arrangement of the adjustment spacer 6 between the worktable 7 and the upper surface of the substrate 4 is beneficial to reduce the requirement for the shape accuracy of the substrate 4. It is only necessary to ensure that the thickness of the material of the substrate 4 is uniform. When the gasket 6, the heat insulator 3 and the base plate 4 are pressed and connected between the motor primary 1 and the workbench 7, because the respective thicknesses of the gasket 6, the heat insulator 3 and the base plate 4 are easy to process and remain uniform, Therefore, the lower surface of the workbench and the primary upper surface of the motor are easy to keep parallel, and it is easy to achieve high installation accuracy.

In this embodiment, the workbench 7 , the pad 6 , the base plate 4 , the heat insulator 3 and the primary 1 are fixedly connected together by first fasteners. The first fastener includes a countersunk screw, a workbench installation through hole 7-1 arranged on the workbench 7, a gasket installation through hole 6-1 arranged on the gasket 6, and a base plate arranged on the base plate 4. The first installation through hole 4-1, the heat insulator installation through hole 3-1 arranged on the heat insulator 3, and the primary threaded hole 1-1 arranged on the primary, and the workbench installation through hole 7-1, The gasket installation through hole 6-1, the base plate first installation through hole 4-1, the heat insulator installation through hole 3-1 are coaxial with the primary threaded hole 1-1, the screw passes through the workbench installation through hole 7-1, The gasket installation through hole 6-1, the first installation through hole 4-1 of the substrate, the heat insulator installation through hole 3-1, and then screw into the primary threaded hole 1-1 to realize the workbench 7, the gasket 6, the substrate 4, The heat insulator 3 is fixedly connected to the substrate of the primary 1, so that the upper surface of the heat insulator 3 is fixedly connected with the lower surface of the substrate 4, and the lower surface of the heat insulator 3 is fixedly connected with the upper surface of the primary 3.

In order to prevent installation difficulties caused by misalignment of the upper and lower positions of the heat insulators, the base plate, and the primary, a second fastener is used in this embodiment to fix the base plate and the heat insulator. The second fastener includes a countersunk screw 5, a second mounting through hole 4-2 of the substrate provided on the substrate 4, and a threaded hole 3-2 provided on the heat insulator 3, and the countersunk screw 5 passes through the substrate After the second installation through hole 4-2 of the base plate on the top is screwed into the threaded hole 3-2 on the heat insulator, the upper surface of the heat insulator is closely attached to the lower surface of the base plate, so that the heat insulator and the base plate are pressed and fixed.

In this embodiment, the third fastener is used to fix the cooling pipe 2 on the lower surface of the base plate 4 . The third fastener includes at least one fixing plate 8, several countersunk screws 9 and some nuts 10 matched with the screws; the cooling pipe 2 is located between the lower surface of the base plate 4 and the fixing plate 8, and the fixing plate is used to The cooling pipe 2 is closely attached to the lower surface of the substrate; each fixing plate 8 is provided with at least one installation through hole 8-1, which matches the third installation through hole 8-1, and the substrate 4 is provided with a third installation through hole 4-3 , the countersunk head screw 9 passes through the cooling pipe installation through hole 4-3 on the base plate 4, the installation through hole 8-1 on the fixing plate 8, and is screwed with the nut 10, and the cooling pipe 2 is fixed on the fixing plate by thread force 8 and the lower surface of the substrate 4, the fixed and close contact between the cooling pipe 2 and the lower surface of the substrate 4 is realized.

In this embodiment, the shape of each heat insulator 3 is cylindrical, the vertical thickness of each heat insulator 3 is the same, and the upper surface and the lower surface of each heat insulator 3 are parallel.

In this embodiment, the vertical thickness of the substrate 4 is smaller than the vertical thickness of each heat insulator 3 .

In this embodiment, the sum of the maximum vertical thickness of the heat insulator 3 and the vertical thickness of the base plate 4 is 1/50-1/2 of the vertical thickness of the motor primary.

In this embodiment, the cooling pipe 2 is a copper pipe, the material of each heat insulator 3 is plastic with good heat insulation, strength and processing performance, and the substrate 4 is an aluminum plate with good heat conduction and uniform material thickness. Adjusting gasket 6 adopts copper sheet with good thermal conductivity and uniform thickness.

In this embodiment, the long circular tube of the cooling tube 2 has a circular cross-sectional shape. As shown in FIG. 4 , the cooling pipe 2 is regularly coiled around the heat insulator in a serpentine shape.

In this embodiment, the motor heat insulation device further includes a positioning plate 11 . The positioning plate 11 can be a part of the workbench, or can be fixedly installed on the workbench as a separate part. The positioning plate 11 has a reference plane, and the positioning plate reference plane is perpendicular to the lower surface of the workbench. In the actual installation process, first, one side of the base plate 4 and one side of the primary 1 are placed against the reference plane of the positioning plate, so that the base plate 4 is aligned with the side of the primary 1, thereby facilitating the positioning of components such as the base plate and the primary.

In this embodiment, since both the cooling pipe 2 and the heat insulator 3 are in close surface contact with the substrate 4, when the temperature of the heat insulator 3 rises due to heat accumulation, the heat will be transferred to the cooling pipe 2 through the substrate 4, so that the insulator The temperature of the heating body 3 is basically consistent with the temperature of the cooling liquid in the cooling pipe. Since the thermal conductivity of the cooling pipe 2 and the base plate 4 is good, the heat insulation of the heat insulator 3 is good, so the heat insulation efficiency is high.

Since several heat insulators 3 are distributed on the base plate 4 and the cooling pipe 2, when one or some heat insulators 3 have a temperature higher than other heat insulators 3 due to the short-term local temperature rise of the linear motor primary 1 When inclined, the heat of the heat insulator 3 or these heat insulators 3 will be transferred to the cooling pipe 2 through the base plate 4, and will be transferred to the heat insulator 3 with a lower temperature through the base plate 4 or the cooling pipe 2 at the same time, thus Uniform heat insulation can be achieved very well.

The embodiments described above have described the technical solutions of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. All done within the principle scope of the present invention Any modification, supplement or substitution in a similar manner shall be included within the protection scope of the present invention.

Claims (15)

1. a kind of motor heat ray filter, including substrate, cooling tube and several insulators, is characterized in that：Hanging down with insulator Straight short transverse is above-below direction, and the lower surface of each insulator is contacted with the upper surface of electric motor primary, each insulator Upper surface is contacted with base lower surface；Cooling tube is fixedly connected on base lower surface, and is coiled in around insulator；Each The vertical height of insulator is all higher than the vertical height of cooling tube.

2. motor heat ray filter as claimed in claim 1, is characterized in that：The upper surface of each insulator is fixedly connected on substrate Lower surface, the lower surface of each insulator are fixedly connected on electric motor primary upper surface.

3. motor heat ray filter as claimed in claim 2, is characterized in that：By the first securing member by substrate, insulator with electricity Machine primary is fixedly connected.

4. motor heat ray filter as claimed in claim 3, is characterized in that：The first described securing member includes screw, is arranged on The first installation through-hole of substrate on substrate, the insulator installation through-hole being arranged on insulator are arranged on first in electric motor primary Level screwed hole, and the first installation through-hole of substrate, insulator installation through-hole are coaxial with primary screwed hole, and screw sequentially passes through substrate First installation through-hole, insulator installation through-hole rear screw enter primary screwed hole.

5. motor heat ray filter as claimed in claim 1, is characterized in that：Workbench is located at upper surface of base plate, workbench and base Pad is set between plate.

6. motor heat ray filter as claimed in claim 3, is characterized in that：Workbench is located at upper surface of base plate, workbench and base Pad is set between plate；The first described securing member also includes the pad installation through-hole being arranged on pad, is arranged on workbench On workbench installation through-hole, pad installation through-hole, workbench installation through-hole, the first installation through-hole of substrate, insulator are installed logical Hole and primary screwed hole are coaxial, and screw sequentially passes through workbench installation through-hole, pad installation through-hole, substrate first and installs and leads to Hole, insulator installation through-hole rear screw enter primary screwed hole.

7. motor heat ray filter as claimed in claim 1, is characterized in that：Substrate is fixed with insulator by the second securing member Connection.

8. motor heat ray filter as claimed in claim 7, is characterized in that：The second described securing member includes screw, is arranged on The second installation through-hole of substrate on substrate, and the screwed hole being arranged on insulator, screw pass through the second installation through-hole of substrate The screwed hole that rear screw enters on insulator.

9. motor heat ray filter as claimed in claim 1, is characterized in that：Cooling tube is fixedly connected on base by the 3rd securing member Plate lower surface.

10. motor heat ray filter as claimed in claim 9, is characterized in that：The 3rd described securing member includes at least one piece admittedly Fixed board, some screws and some nuts matched with the screw；Described cooling tube is located at base lower surface and fixed plate Between, fixed plate is used for cooling tube to be adjacent in base lower surface；Every piece of fixed plate at least provided with an installation through-hole, phase therewith Coupling, substrate arrange the 3rd installation through-hole of substrate, screw through after the 3rd installation through-hole of substrate, the installation through-hole in fixed plate with Nut screw is compressed.

Motor heat ray filter in 11. such as claim 1 to 10 as described in any claim, is characterized in that：With the cooling tube The vertical section of length direction be cross section, the shape of cross section of cooling tube is circular, rectangle or trapezoidal.

Motor heat ray filter in 12. such as claim 1 to 10 as described in any claim, is characterized in that：Described is each heat-insulated Body is in regular distribution in electric motor primary upper surface.

13. motor heat ray filters as claimed in claim 12, is characterized in that：In base lower surface, described cooling tube every In rule coiling around hot body.

Motor heat ray filter in 14. such as claim 1 to 10 as described in any claim, is characterized in that：Described insulator Maximum perpendicular thickness and substrate vertical thickness sum be electric motor primary vertical thickness 1/50～1/2.

Motor heat ray filter in 15. such as claim 1 to 10 as described in any claim, is characterized in that：Described motor every Thermal also includes location-plate, and the location-plate has a reference plane, and the location-plate reference plane is vertical with workbench lower surface, During installation, the one side of substrate, the one side of electric motor primary abut the location-plate reference plane.