JPH054766U - Refrigerant cooling rotating electric machine rotor - Google Patents

Abstract

(57) [Abstract] [Purpose] Disperses the discharge of a refrigerant by a rotating machine that supplies the refrigerant to a stator through a refrigerant discharge hole provided in the outer peripheral portion of the rotor iron core to cool the stator. [Composition] Refrigerant cooling rotation in which a refrigerant ejection hole portion provided on the outer peripheral portion of a rotor core is provided with an inclined surface and an ejection guide portion having a width equal to or larger than a diameter of a refrigerant passage hole as shown in FIG. Machine rotor structure. [Effect] Since the refrigerant ejected by the ejection guide portion having the wide inclined surface is dispersed, damage to the stator due to the refrigerant liquid can be prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a cooling jet method for a refrigerant cooling rotary electric machine.

[0002]

[Prior Art]

 FIG. 4 is a cross-sectional view of the refrigerant cooling rotary electric machine, 6 is a stator, 7 is a coil, and the rotor core 1 is mounted on the shaft 2. A shaft 2 has a shaft coolant passage 4 in the rotor, and a rotor core 1 has a coolant passage 3 radially provided on the circumference.

Next, the cooling of this system will be described. The refrigerant supplied from the outside passes through the shaft refrigerant passage 4 and the refrigerant passage of the rotor core portion 3 and is supplied to the gaps of the stator and the rotor. In this void, the refrigerant absorbs the heat generated from the inner peripheral surface of the stator and the outer peripheral surface of the rotor to cool the rotor. The arrow indicates the flow of the refrigerant.

[0004]

[Problems to be solved by the device]

 In the conventional rotor, as shown in FIG. 5, the refrigerant outlet has the passage hole exposed to the outer periphery of the iron core or is smoothed as shown in FIG. 6, so cooling is performed at the peripheral speed of the rotor. At that time, it was sprayed concentrated on the stator and it was necessary to provide protection on the stator side.

The present invention has been made in order to solve the above problems, and aims to disperse the cooling medium jet of the rotor.

[0006]

[Means for Solving the Problems]

 The rotor according to the present invention has an inclined surface at the refrigerant passage outlet portion on the outer periphery of the rotor, and the width thereof is provided with a jetting guide wider than the passage outlet width.

[0007]

[Action]

 The rotor having the ejection guide according to the present invention can disperse the refrigerant supplied from the passage hole by the ejection guide.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 8 is a jet guide provided at the outlet 3 of the rotor refrigerant passage. The enlarged view is shown in FIG. The width 8 is larger than the width of the passage hole and has an inclined surface in the direction opposite to the rotation direction as shown in the cross section of FIG.

The arrow indicates the flow of the refrigerant. When the jet guide is provided in this way, the refrigerant flowing out from the passage 3 is jetted at the outer peripheral circumferential speed of the rotor so as to be shaken off from the outer peripheral surface of the maximum width of the jet guide, so that the inside of the stator is prevented. When it hits the peripheral surface, it is dispersed and ejected more widely than when there is no guide.

[0010]

[Effect of the device]

 As described above, according to the present invention, the impact of the refrigerant hitting the stator can be weakened by the distributed distribution of the refrigerant ejected from the rotor, and it is not necessary to take protective measures for the stator and it is inexpensive. It is possible to manufacture various refrigerant cooling rotary machines.

[Brief description of drawings]

FIG. 1 is a rotor of a refrigerant cooling rotating electric machine according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a rotor cooling jet of the present invention.

FIG. 3 is a sectional view of a refrigerant jet port.

FIG. 4 is a cross-sectional view of a conventional refrigerant cooling rotating electric machine.

FIG. 5 is a conventional rotor.

FIG. 6 is a sectional view of a refrigerant outlet of a conventional rotor.

[Explanation of symbols]

 1 Rotor Iron Core 2 Shaft 3 Refrigerant Passage 4 Shaft Refrigerant Passage 5 End Ring 6 Stator Iron Core 7 Stator Coil 8 Jet Guide with Slope

Claims (1)

[Claims for utility model registration] [Claim 1] The coolant liquid is jetted into a gap between the stator and the rotor from a jet passage in an outer peripheral portion of the iron core through a coolant passage radially provided in the rotor iron core. In the refrigerant-cooled rotary electric machine described above, a rotor of the refrigerant-cooled rotary electric machine is characterized in that a jet guide having an inclined surface wider than the passage hole is provided at the jet outlet of the outer peripheral portion of the iron core.