| 摘要 |
A shower heating device has an undulated tube, a plurality of semiconductor heating elements securely received in the undulated tube, a plurality of pairs of electrical plates each being provided to have one of the semiconductor heating elements sandwiched therebetween and a plurality of pairs of insulation plates each having one of the pairs of the electrical plates received therebetween. With such an arrangement, the water in the undulated tube is able to be heated shortly.
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