JPS6333977Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a cooling device for a drive motor control device in a spinning machine.

Conventional technology Conventionally, control devices such as inverters that control the rotation speed of drive motors of spinning machines such as spinning machines are expensive and large, and one control device often controls multiple spinning machines. The control equipment and its cooling device used to be installed in a separate location from the spinning machine, but in recent years, with the development of electronics, equipment such as inverters for controlling AC motors has become cheaper and smaller, and the control equipment has been installed separately for each spinning machine. It is now possible to install it by incorporating it into the machine.

By the way, when the current passes through this control device,
It generates a large amount of heat and must be cooled,
It is desirable to have a sealed structure to protect the control equipment from the air fluff generated by the spinning machine, so strong cooling capacity is required.However, natural cooling requires forced cooling because the heat dissipation body (radiator fin) becomes large. desired. However, the commonly used forced cooling requires a dedicated fan, motor, etc. to send cooling air, and the equipment is more complex than natural cooling.

That is, as shown in FIG. 1, in the conventional cooling system, the inverter box 2 that controls the drive motor 1 is installed in a chamber 5 above the pneumatic clearer 4 at the end of the machine base 3. A fan 7 and ventilation holes 8 and 9 for forcibly cooling the cooling fins 6 of the inverter box 2 are also installed.
Also, the new automatic clearer 4 is the intake fan 1.
0, filter 11, duct 12 extending to the machine side
An electrical equipment room 13 is installed on the back of the clearer 4, a ventilation hole 15 that leads to the drive motor room 14 is installed at the bottom of the clearer 4, and a ventilation hole 17 that leads to the underground exhaust room 16 is installed at the bottom of the drive motor room 14. is provided. In this device, air is guided from a duct 12 into the filter 11 by the action of an intake fan 10, enters a drive motor room 14 through a ventilation hole 15, cools the drive motor 1, and then passes through a ventilation hole 17 into an underground exhaust room. It is discharged on 16th.
In order to cool the inverter box 2, outside air is guided into the chamber 5 through the ventilation holes 8 by the action of the fan 7, and after cooling the cooling fins 6 of the inverter box 2, it is discharged to the outside through the ventilation holes 9. .

That is, the conventional device requires a dedicated fan 7, a motor, etc. for sending cooling air, and has the disadvantage that the device becomes complicated.

In order to eliminate the above-mentioned drawbacks, the applicant previously filed an application in Utility Model Application No. 198720 (1972) for a device to utilize the air flow caused by the intake fan of the pneumatic clearer to cool an inverter, etc. However, this idea does not take into account the fact that the air flow is actively applied to the control equipment, and the cooling effect cannot be sufficiently increased.

Purpose This invention was made to solve the above-mentioned conventional problems, and the purpose is to provide a cooling device for drive motor control equipment that can sufficiently cool the drive motor control equipment with a simple configuration. It is in.

Configuration of the device In other words, in a spinning machine having a pneumatic clearer device that sucks in fibers by the suction action of an intake fan and a control device for the drive motor built into the machine base, the control device for the drive motor is placed in the suction or exhaust passage of the intake fan so that a strong air flow hits the control device cooling section.

Example 1 Hereinafter, the first example embodying the present invention will be described as a second example.
~ Figure 3 will be explained in detail.

In the drawing, reference numeral 21 denotes a duct for guiding air sucked into a pneumatic clearer attached to the spinning frame 20. 22 is a filter box, 23
is a filter, 24 is an intake fan for air suction,
Reference numeral 25 denotes a motor for driving the fan 24, which is disposed in a direction perpendicular to the longitudinal direction of the machine base.
Further, an exhaust duct 29 is provided on the top wall of the filter box 22, leading to a chamber 28 in which an inverter 27 for controlling the rotation speed of the main drive motor 26 is installed, and a chamber 30 for the main drive motor 26 is provided on the bottom surface.
An exhaust hole 31 communicating with is provided. The area of the exhaust hole 31 can be set to any desired area by a shielding plate 32 that can be moved and fixed in the horizontal direction along the exhaust hole 31.

An exhaust hole 34 communicating with the underground exhaust chamber 33 is provided in the lower part of the chamber 30 of the main drive motor 26, and an exhaust hole 35 communicating with the outside air is provided in the side surface of the installation chamber 28 of the inverter 27. Further, 36 is an inverter box in which the inverter 27 is housed;
7 is an inverter cooling fin, and 38 is an electrical equipment room in which wiring switches and the like are housed.

To explain the function of the cooling device for the inverter 27 configured in this way, air from the duct 21 is introduced into the filter box 22 by the function of the intake fan 24, and some of the air passes through the exhaust hole 31 on the bottom of the main drive unit. After entering the motor room 30 and cooling the main drive motor 26, it is discharged to the underground exhaust room 33 through the exhaust hole 34.

The remaining air is introduced into the inverter installation chamber 28 through the upper exhaust duct 29, cools the inverter cooling fins 37, and is then discharged to the outside through the exhaust hole 35.

In addition, by moving the position of the shielding plate 32, the ratio of the air flow entering the main drive motor room 30 and the air flow entering the inverter installation room 28 can be set as desired, and the strength of the air flow hitting the inverter cooling fins 37 can be adjusted.

In this way, in this embodiment, the air flow from the fan 24 of the new automatic clearer is used to forcibly cool the inverter 27, which not only simplifies the configuration of the cooling device, but also allows the new automatic clearer to cool down the inverter 27. Inverter 2 is installed in the exhaust passage of Yara.
7, a strong air flow hits the cooling fins 37 of the inverter 27, and a sufficient cooling effect can be achieved.

Embodiment 2 Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, the air after cooling the inverter 27 is not discharged to the outside, but is led to the main drive motor room 30 through the exhaust passage 41, and then to the underground exhaust room 30.
This embodiment differs from the first embodiment in that the second embodiment is discharged in the third embodiment.

In this embodiment, as in the first embodiment, in addition to being able to achieve a sufficient cooling effect, the air whose temperature has increased to cool the inverter 27 is not discharged to the outside, but is discharged into the underground exhaust chamber 33. Therefore, there is no rise in room temperature due to the influence of discharged air, which is convenient for controlling the temperature inside the factory, which has a large effect on the quality of spun yarn.

Embodiment 3 Next, a third embodiment of the present invention will be described with reference to FIG.

In this embodiment, instead of the exhaust duct 29 and exhaust hole 35 in the first embodiment, a ventilation hole 51 is installed on the side of the inverter installation chamber 28 near the suction fan 24, and a filter box is installed on the lower surface of the installation chamber 28. It is characterized by the provision of an exhaust hole 52 that communicates with the air outlet 22. In this device, outside air flows into the inverter installation chamber 28 through the ventilation hole 51 due to the negative pressure generated by the suction action of the suction fan 24, and is introduced into the filter box 22 through the exhaust hole 52. In this embodiment as well, the air after cooling the inverter 27 is not discharged to the outside but is discharged into the underground exhaust chamber 33, which is convenient for temperature control in the factory as in the second embodiment. Unlike the embodiment, there is no need to provide the exhaust passage 41 exclusively for the air after cooling the inverter 27, so the configuration is further simplified.

Note that this invention is not limited to the above-mentioned embodiments. For example, as shown in FIG. All the exhaust air from the box 22 enters the inverter installation chamber 28 through the exhaust hole 31, cools the inverter cooling fins 37, enters the main drive motor chamber 30 through the exhaust hole 61, passes through the exhaust hole 34, and then enters the underground exhaust chamber 33. However, since all the air discharged from the filter box 22 passes through the inverter installation chamber 28, a stronger cooling effect can be obtained.

Further, as shown in FIG. 7, the inverter installation chamber 28 may be arranged on the side surface of the filter box 22, and in this case, the overall height can be reduced.

In addition, as shown in FIG. 8, the filter box 22 and intake fan 24 are arranged parallel to the longitudinal direction of the machine as in the conventional device, and the inverter installation chamber 28 is arranged on the back of the filter box 22. Arrangement method is possible.

In addition, if the exhaust hole 31 is set to have an appropriate area, the shielding plate 32 can be omitted.

Effects As detailed above, according to the present invention, the cooling section for the control equipment of the drive motor is installed in the suction or exhaust passage of the air intake fan of the pneumatic clearer. A powerful air flow can be applied to the cooling part of the control equipment without adding a fan or motor, and a forced cooling system for the drive motor control equipment can be configured with a simple configuration and sufficient cooling effect.

[Brief explanation of the drawing]

Fig. 1 is a side view of the conventional device, Fig. 2 is a side view of the first embodiment of the present invention, Fig. 3 is its front view, Fig. 4 is a front view of the second embodiment, and Fig. 5 is A front view of the third embodiment, FIGS. 6 and 7 are front views showing applied examples, and FIG. 8 is a side view of the applied example. 22... Filter box of the neutral clearer, 24... Intake fan, 26... Drive motor, 27... Control equipment, 37... Cooling unit.

Claims (1)

[Scope of utility model registration request] In a spinning machine that has a pneumatic clearer device that suctions fibers by the suction action of an intake fan, and has a control device for the spinning machine drive motor built into the machine frame, the cooling section of the control device is connected to the suction of the suction fan. Or a cooling device for a drive motor control device in a spinning machine, characterized in that it is installed in an exhaust passage.