1. A stator cooling apparatus to be used to cool a stator after molding, the apparatus including:
a spraying device for spraying water in the form of fine particles to the stator;
an air-blowing device for blowing air to the stator;
a type identifying device for identifying a type of the stator;
a temperature detecting device for detecting a temperature of the stator; and
a control device for controlling an amount of water to be supplied to the spraying device and an amount of air to be supplied by the air-blowing device based on the identified type and the detected temperature.
2. The stator cooling apparatus according to claim 1, wherein the type identifying device includes a distance sensor for detecting a distance from the stator and a type determining device for determining the type of the stator based on the detected distance.
3. The stator cooling apparatus according to claim 1, wherein the type identifying device includes a weight sensor for detecting a weight of the stator and a type determining device for determining the type of the stator based on the detected weight.
4. The stator cooling apparatus according to claim 1, wherein the type identifying device includes a type determining device arranged to calculate a lowering temperature of the stator in a first cooling process based on the temperature detected by the temperature detecting device and determine the type of the stator based on the calculated lowering temperature.
5. The stator cooling apparatus according to claim 1, wherein the temperature detecting device is provided to be able to make contact with the stator due to a stopper for restricting movement of the stator.
6. The stator cooling apparatus according to claim 2, wherein the temperature detecting device is provided to be able to make contact with the stator due to a stopper for restricting movement of the stator.
7. The stator cooling apparatus according to claim 3, wherein the temperature detecting device is provided to be able to make contact with the stator due to a stopper for restricting movement of the stator.
8. The stator cooling apparatus according to claim 4, wherein the temperature detecting device is provided to be able to make contact with the stator due to a stopper for restricting movement of the stator.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A driving circuit for piezoelectric lamps comprising a power source, a dimming signal source to generate a first reference cycle signal, at least one piezoelectric transformer and a power switch unit to control power amount passing through the piezoelectric transformer through alteration of a duty cycle, and at least one load functioned by receiving the power transformed and output by the piezoelectric transformer, the driving circuit further including:
a pulse modulation unit to generate a duty cycle signal of the power switch unit and a buffer unit connecting to the pulse modulation unit, the first reference cycle signal being sent to the buffer unit which generates a second reference cycle signal at a potential lower than the potential of the first reference cycle signal, the potential of the second reference cycle signal output from the buffer unit gradually rising from an initial state to the potential of the first reference cycle signal to form a buffer time series, through potential alteration of the second reference cycle signal and the pulse modulation unit the duty cycle ratio of the duty cycle signal is changed.
2. The driving circuit of claim 1, wherein the buffer unit is an energy storage element capable of charging and discharging at a selected time period which becomes the buffer time series.
3. The driving circuit of claim 2, wherein the energy storage element is a capacitor.
4. The driving circuit of claim 1, wherein the pulse modulation unit is connected to a reference frequency source.
5. The driving circuit of claim 4, wherein the reference frequency source outputs a reference frequency signal to regulate the frequency of the duty cycle signal.
6. The driving circuit of claim 1, wherein the pulse modulation unit includes a frequency generation unit and a cycle regulation unit.
7. The driving circuit of claim 1, wherein the load driven by the piezoelectric transformer is a cold cathode fluorescent lamp.
8. The driving circuit of claim 1, wherein the load driven by the piezoelectric transformer is a hot cathode fluorescent lamp.
9. The driving circuit of claim 1, wherein the load driven by the piezoelectric transformer is a gas discharge lamp.