JPH10288188A - High speed rotating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high speed rotating machine furnished with a cooling jacket simple in structure and compact. SOLUTION: This rotating machine is constituted by dividing an annular space 8 to be a refrigerant channel formed in a housing into an inflow end 8a side and an outflow end 8b side by arranging a partition plate 9 in the inside of it and devised to flow out only refrigerant running over a baffleplate 10 from the outflow end 8b by providing the baffleplate 10 on a channel from the inflow end 8a toward the outflow end 8b. Consequently, even though it is structured only to partition the space 8 by the two plates 9, 10, it is possible to extremely efficiently use cryogenic heat which the introduced refrigerant holds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-speed rotating machine having a simple and efficient cooling structure.

[0002]

2. Description of the Related Art In a high-speed rotating machine, when a member requiring cooling, for example, a motor stator or the like, is cooled by water cooling, generally, the stator is formed in a double structure, and fins are formed on the abutting surface of one member. It is known that a spiral cooling jacket is formed along the fin when the two members abut each other.

[0003]

However, the cooling jacket having such a configuration has a problem in that the provision of the fins causes the shape to be complicated and large, and causes the number of manufacturing steps and the cost to increase.

[0004]

In order to solve the above-mentioned problems, a high-speed rotating machine according to the present invention forms an annular space serving as a flow path for introducing a refrigerant in a housing, and partitions the space into the annular space. A plate is provided to divide the interior into an inflow end side and an outflow end side, and a baffle plate shorter than the partition plate is provided on a flow path from the inflow end to the outflow end, and the refrigerant having passed over the baffle plate In this case, a cooling jacket configured to flow out only from the outflow end is employed.

[0005] With such a configuration, the refrigerant flowing from the inflow end moves through the flow path formed along the annular space, and during that time, cools the housing and raises the temperature. Thus, the refrigerant whose temperature has risen is located in the upper layer of the flow path, and the refrigerant that still retains the cold heat is located in the lower layer of the flow path. We will overcome the latter in preference. As described above, the cooling jacket used in the present invention controls the flow of the refrigerant by the baffle plate so that the brought cold heat can be used effectively, so that it has a simple structure and performs extremely efficient cooling. It becomes possible.

[0006]

An embodiment of the present invention will be described below with reference to the drawings. The high-speed rotating machine described in this embodiment is, for example, an axial fan or the like, and uses a cooling jacket 1 according to the present invention to cool a driving motor 2 thereof. Motor 2
Is a rotor 4 integrally rotatable with the shaft 3, a stator 5 disposed at a position surrounding the rotor 4, a motor coil 6 wound around the stator 5, and a close contact with the outside of the stator 5. Motor housing 7 to hold it
Is provided.

On the other hand, the cooling jacket 1 is
This is for cooling the stator 5.
And an annular space 8 formed in a motor housing 7 for holding a refrigerant and serving as a flow path for introducing refrigerant, and a partition plate 9 and a baffle plate 10 disposed in the space 8. Space 8
The method of forming the housing 7 by providing a lightening portion when molding the housing 7 or by assembling two annular members provided with a recess in one or both of the abutting surfaces is arbitrary. . The partition plate 9 has a height and a width substantially corresponding to the longitudinal sectional shape of the annular space 8, and the space 8 is radially closed at a certain position to move the inside of the space 8 toward the inflow end 8 a. And the outflow end 8b. Inflow end 8a
In the thickness of the housing 7 corresponding to the lower part of the
a is bored in advance, and an outlet 7b is bored in advance in the thickness of the housing 7 corresponding to the lower layer of the outflow end 8b. The baffle plate 10 is disposed on the flow path 8 from the inflow end 8a to the outflow end 8b, specifically, at a position where the annular gap is tangentially partitioned near the outflow end 8b. It is configured to be slightly lower than that of the above, so that only the refrigerant that has passed over the baffle plate 10 flows out from the outflow end 8b.

With such a structure, the inflow end 8
The refrigerant flowing from a moves through the annular flow path 8, applies cold to the housing 7 during that time, receives heat from the stator 5, and raises the temperature. Thus, the heated refrigerant flows into the flow path 8
In the upper layer, and the refrigerant still retaining the cold heat
Therefore, the former passes over the baffle plate 10 provided in the middle of the flow path in preference to the latter. As described above, in the present embodiment, the baffle 10
By controlling the flow of the refrigerant, the refrigerant holding the introduced cold is stopped inside the jacket, and the refrigerant after applying the cold is discharged out of the jacket sequentially, so while having a simple and compact structure ,
Extremely efficient cooling of the housing 7 and thus the stator 5 can be performed. Therefore, the cooling jacket 1 of this embodiment has an excellent effect that the number of manufacturing steps and costs can be effectively reduced without impairing the cooling effect.

The specific configuration of each section is not limited to the illustrated embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0010]

The present invention is embodied in the form described above and has the following effects. That is, in the high-speed rotating machine of the present invention, the annular space which is formed as the refrigerant flow path in the housing is divided into the inflow end side and the outflow end side by disposing the partition plate therein, A cooling jacket is provided in which a baffle plate is provided on the flow path from the end to the outflow end, and only the refrigerant that has climbed over the baffle plate flows out from the outflow end. For this reason,
Even though it has an extremely simple and compact structure in which only a partition plate and a baffle plate are provided in the flow path, the flow pattern of the refrigerant can be controlled to efficiently cool the housing and hence the object to be applied. Therefore, an extremely useful effect that the number of manufacturing steps and cost can be effectively reduced without sacrificing the cooling effect is obtained.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a motor portion showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a perspective view schematically showing the cooling jacket of the embodiment.

FIG. 4 is an expanded view of the cooling jacket along a circumferential direction.

[Explanation of symbols]

 7 Housing 8 Flow path (space) 8a Inflow end 8b Outflow end 9 Partition plate 10 Baffle plate

Claims (1)

[Claims] 1. An annular space serving as a flow path for introducing a refrigerant is formed in a housing, and a partition plate is disposed in this space to divide the interior into an inflow end side and an outflow end side. A baffle plate having a height shorter than the partition plate is provided on the flow path from the end to the outflow end, and a cooling jacket configured to allow only the refrigerant having passed over the baffle plate to flow out from the outflow end is provided. High-speed rotating machine.