JPS58103847A - Open type motor - Google Patents

Abstract

PURPOSE:To prevent exhaust gas and suction gas from mixing by forming a partition part which partitions between a coolng air inlet passage and a cooling air outlet passage formed at brackets of both sides between a fan guide and the brackets. CONSTITUTION:Fan guides 11a, 11b which are displaced at the positions so that a cooling air inlet passage 11c and a cooling air outlet passage 11d are disposed oppositely to each other of the same shape, between a stator 3 and brackets 2a, 2b of both sides. The cooling air which is sucked from an air window 10a of the bracket 2a is, for example, led by the operation of a fan 8 of opposite load side R to the cooling air inlet passage 11c, the fan guide 11a, the air passage 1b of lower half of the stator 3 and the cooling air exhaust passage 11d of the fan guide 11b, and is exhausted from the window 10b of the bracket 2b. Then, partitions 12a, 12b which respectively are projected from the brackets 2a, 2b toward the fan brackets 11a, 11b are formed, thereby partitions between the passage 11c and the passage 11d.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a diagonal cooling structure that efficiently cools various parts of an open mold.

Conventionally, many open models having structures as shown in Fig. 1, Fig. 2, and Fig. 3 have been manufactured.

To explain the structure of this, 1 is a cylindrical housing with both ends open, 2a and 2kl are cylindrical stators in which the housing 1 is housed, and a coil 4 is wound around the stator. The back side of this stator 3 has a hole made from the housing 1 or a hole from the housing 1.
between the back surface of the stator 3 and the inner surface of the howling 1 is a ventilation path 1b for cooling air along the lip 1a.
form. Reference numeral 5 denotes a rotating shaft rotatably supported by bearings that do not fit into the brackets 2a and 2bK, and includes a rotor 6 that is not disposed inside the stator 3. This rotor 6 includes a secondary conductor bar (not shown) and an end ring 7. Additionally, a fan 8 placed outside the IC/fi end ring 7
will be provided. Each fan blade of this fan 8 is arranged in a radial direction with the rotating shaft 5 as the center. Reference numeral 9 denotes a fan guide, which is made by recessing the center of a disc-shaped plate material to form a ventilation hole 9a, and the ventilation hole 9a is directed toward the tip of the fan blade of the fan 8.

Now, when the open type mode configured in this way starts to operate, the cold outside air is sucked in through the wind window IQa and the ventilation hole 9at- by the action of the 7-ang 8 on the anti-precious cargo side, and the cold outside air is directed along the fan guide 9 to the ventilation path 1b side. It passes through the ventilation passage 11) and is discharged from the wind window 101). In this case, the cooling air mainly cools the end portion 4a of the coil 4 and the back surface of the stator 5. At this time, the cooling air flowing out from the 1st ventilation passage 1b to the 2b side I/C is considerably warmed and spreads into the space inside the bracket 2b.
As a result, the blade 8 on the load side only stirs the warm air flowing out from the ventilation path 1b, and the end 4 of the carp v4 is prevented.
b will not be cooled.

For this reason, recently a cooling structure has been considered in which both ends 4a and 4b of the coil are equally cooled. An example of this cooling structure will be explained with reference to Fig. 4 to tlXa.

That is, these fan guides 11a, 111) include a cooling air flow passage 11G and a cooling air outflow passage 11d.
are prepared, and the positions of the cooling air flow passage 110 and the cooling air outlet passage 11d of the fan guides 11a and 11b are shifted from each other and placed inside the respective snails 2a and 21). The shape of the fan guides 11a, 111) will be explained in detail.
1b is the central area! The outer diameter r of the approximately half shape of the fan guides 11a and 11b is selected to be approximately equal to the inner diameter of the housing 1. This fan guide 1
During assembly, the maximum outer diameter r3 portions of the housings 1a and 11t) are sandwiched and fixed by the end face of the housing 1 and the butaker shells 2a and 21), respectively. It was. Fan Guide 11 &
The outer diameter r of the remaining half of the shape of the stator 3 is equal to or slightly smaller than the outer diameter of the stator 3. A semi-cylindrical guide portion 11e is provided in this small diameter portion, and the tip thereof is configured to abut against the end surface of the stator 3.

11f is a ventilation hole opened in the center of the fan guides 11a, 11t). The air passage X connecting the outer end surfaces of the fan guides 11a and 11b and the ventilation hole 11f is the cooling air flow passageway 1.
The air path Y formed by the outer cylindrical surface of the 1C1 guide portion 11e becomes a cooling air outflow path 11d. Note that the fan guide 11a and the fan guide 11b have exactly the same shape, but are mounted in different directions and positions.

When the open type mold constructed in this manner is operated, the open type mold is cooled as follows.

That is, by the action of the 7th block 78 on the opposite load side R, the outside air sucked in from the wind window 10a of the bracket 2a is guided into the fufun guide Ila through the cooling wind passage 11Ct-, and the end 4at of the carp v4 is cooled. After that, it is sent to about the lower half of the ventilation passage 1b.

The cooling air sent into the ventilation passage 1b cools approximately the lower half of the stator 3, and then is guided along the cooling air outflow passage 11 (l) of the fan guide 11b to the air window 101 of the bracket 2b.
) is discharged to the outside of the machine. Conversely, due to the action of the load side P 11-8, the outside air sucked in through the wind window 10b of the Briquette 2b is guided into the fan guide 111) along the cooling air passageway 110, and the end s4b of the coil 4 is guided into the fan guide 111). After cooling, approximately the upper half of the ventilation passage 1bVc is fed into the a
The cooling air sent into the llGl air path 1b cools approximately the upper half of the stator 5. After that, the cooling air is guided along the cooling air outlet air path 11dJC of the fan guide 11b and is discharged to the outside of the machine through the air window 10a of the bracket 2a.

In such an example, necessary and sufficient cooling is performed under almost the same conditions on Fi, the load side and the anti-load side of the open mode.

Also, as shown in this and ml, Figure 119, Figure 10 of Iris, 71
The fan blades of the fan 8 can be tilted in a certain direction rather than just radially, and the cross section can also be shaped like an arc. When using a fan with this type of shape, there is a directionality in the operating direction for the fan to work effectively, but when the fan rotates in the effective rotation direction, the aerodynamic performance is greatly improved compared to radial fan blades, and the fan blades are not effective. Even when operating in the rotational direction, a certain degree of aerodynamic performance (6-side degree of aerodynamic performance in the effective rotational direction) can be obtained. Therefore, if the open type mode is operated in forward or reverse rotation, one of the fans should be configured to work effectively.

It is possible to obtain an open model which is more advantageous in terms of total performance in terms of cooling and noise than when using radial fan blades and a secondary fan.

Now, when the open mode is configured as described above and the operation of the open mode is continued, the cooling air flow passage for people 11C and the air passage for cooling air outflow 11(i
Since these are partially close to each other and not particularly separated, some of the high-temperature cooling air that is not discharged from the cooling air outflow air path 11d is sucked into the fan guides 11a and 11kl again and flows between the fan guides 11a and 11kl. There is.

Therefore, the present invention provides a further improved cooling structure that prevents mixing of exhaust and intake cooling air with each other.

That is, the present invention has a fan that sucks cooling air through a part of the wind window of one bracket, a fan that sucks cooling air through a part of the wind window of the other bracket, and a fan that sucks cooling wind through a part of the wind window of the other bracket. A fan guide comprising a flowing ventilation passage, a cooling air flow passage for guiding cooling air to the ventilation passage, and a cooling air outflow passage for guiding the cold cooling air flowing through the ventilation passage to a part of the wind window of the bracket, In an open model, the guides are placed on the respective bracket sides by shifting the positions of the cooling air flow passageway and the cooling air outflow passageway. A button is provided between the bracket and the bracket.

Hereinafter, one embodiment of the final perfect nine angle will be explained with reference to Figure 11 and Figure 12. In this embodiment, the parts indicated by the same weights as those of the conventional example already explained have the same structure and function, so the explanation will be omitted. That is, 12a,
12'b is a partition section.

The fan guides 11a and 11b protrude from the inner sides of the brackets 2a and 21) respectively.

These partition parts 12a, 12b are fan guides 11a, 11
Cooling air flow passageway 110 for people and cooling air outflow passageway 11d of b.
A curved portion along the small diameter portion of the finger guides 11a and 11b to separate the
Continuing from this, the fan guides 11a and 11b are comprised of small diameter portions and companion portions extending radially toward the connecting tubes of the large diameter portions. When using the brackets 2a, 21) having the same properties as the partitions 12a, 12btli, the step consists of casting the brackets 2a, 2b.

When operating the open mode configured in this way,
Fan guide lla, 111) cooling air passage 11
0 and the cooling air outflow passage 11d are the partition parts 12a and 12'b.
This prevents the cooling air discharged from the cooling air outlet passage 11d from being sucked in again. At this time, the height of the partitions 12a, 121) is set sufficiently high,
Divider part 12a, 1 when opening the open model
2 bd; 7? If the configuration is such that the fan guides 11a, 121) are pushed slightly toward the stator 3 side, the fan guides 11a, 121) are pushed slightly toward the stator 3 side.
, 11b can be suppressed to some extent to obtain an open model with less noise.
An elastic body can also be placed between the two.

In addition, in the embodiment, the end 1fiJc style glow of the brackets 2a, 21) on the inner diameter side of the partitions 12a, 12b.

101) is not provided, but it can also be provided if necessary. In addition, in the * embodiment, the fan guide 11a includes only one cooling air passage 110 and one cooling air outflow passage 11d.

11t) has been described, but each of these may be divided into two or more. Of course, at this time, a plurality of partition parts 12a, 12k) are also required. Furthermore, in the embodiment, the partition parts 125L, 12t
) is provided on the side of the ports 2a, 21), but it may also be provided on the side of the fan guides 11a, 11'b. In this way, the partition part becomes the reinforcing material of the fan guides 11a, 11b. Because I work as a.

The fan guides 11a, 111) themselves have increased rigidity.

It is possible to prevent the fan guides 11a and 11b from vibrating and to prevent the generation of fringe noise.

As is clear from the above description, the present invention includes a fan that sucks cooling air from a part of the wind window of one bracket, a fan that sucks cooling air from a part of the wind window of the other bracket, a housing, and a stator. A cooling air passage formed in the darkness through which cooling air flows, a cooling air flow passageway that guides the cooling air to the ventilation passage, and a cooling air outlet passage that guides the cooling air that has flowed through the ventilation passage to a part of the wind window of the bracket. In an open model, the fan guide is arranged on the bracket side with the cooling air passage and the cooling air outflow passage shifted in position. The partition part that separates the passageway is arranged so that a fan guide and a plaque can be viewed. Therefore, according to the present invention, since there is no mixing between the exhaust flow and the intake flow of cooling air, the open model can be efficiently cooled.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional open model. Recommended Figure 2 is a side view seen from the R side of Figure 1, Figure 3 is a schematic diagram showing the A-A cross section of Figure 1, Figure 1 is a sectional view showing another conventional example, and Figure 5 is @ Figure 6 is a schematic diagram showing the cross section along B-B in Figure 4. Figure 7 is a side view showing the structure of the fan guide. Figure 8 is a schematic diagram showing the structure of the fan guide. The front view, Figure 9, and Figure 10 are schematic diagrams showing the shape of another conventional fan, and Figure 11 is a sectional view for explaining the structure of one embodiment of the present invention. 1
Figure 2 is a side view seen from the R side of Figure 11. 1... Housing, 1b... Ventilation path, 2a, 2b.
... Bracket, 3... Hard 2 children, 8... Fan, 1
0a. 1ob...Kazemado, ila, 11b...Fan guide. 110... Cooling air flow passage for people % 11 (i... Cooling air flow passage, 12a, t2b... Partition part. ke 1 Figure, t, 22 Figure 3 Kano 40 Ritsu 7n Dimension 8 Diagram 9 Figure body 10 wow 11 figure o 12 figure

Claims (1)

[Claims] A fan that sucks cooling air through a part of the wind window on one bracket, a fan that sucks cooling air through a part of the wind window on the other bracket, and a ventilation passage formed between the housing and the stator through which cooling air flows. , a fan guide having a cooling air passage for guiding cooling air to the ventilation passage and a cooling air outlet passage for guiding the cooling air flowing through the ventilation passage to a part of the wind window of the bracket; The positions of the passage for cooling air flow and the passage for cooling air outflow are shifted and placed in the respective puttugets, and a partition part that partitions the passage for cooling air flow and the cooling air outflow passage is placed between the 7-fan guide and the bracket. An open model characterized by the fact that