Thermostatic pad

Abstract

This invention discloses a constant temperature pad, comprising a heat-conducting plate, a heat pipe, a heating element, a temperature sensor, and a controller. The heat-conducting plate has a top surface and a bottom surface facing each other. The heat pipe is disposed on the bottom surface. The heating element is thermally coupled to the heat pipe. The temperature sensor is disposed on the bottom surface. The controller is disposed on the bottom surface and electrically connected to the heating element and the temperature sensor. The controller can thus control the heating element to generate heat based on the temperature sensed by the temperature sensor. This invention heats the heat-conducting plate using a heating element and a heat pipe, and further utilizes a temperature sensor to allow the controller to control whether the heating element generates heat based on the temperature of the heat-conducting plate, thereby achieving the effect of maintaining a constant temperature for the heat-conducting plate.

Claims

1. A constant temperature pad, comprising: a heat-conducting plate having a top surface and a bottom surface opposite to each other; a heat pipe disposed on the bottom surface; a heating element thermally coupled to the heat pipe; a temperature sensor disposed on the bottom surface; and a controller disposed on the bottom surface and electrically connected to the heating element and the temperature sensor, wherein the controller can control the heating element to generate heat according to the temperature sensed by the temperature sensor.

2. The temperature-regulating pad as described in claim 1, wherein, The heating element includes: a thin film substrate attached to the heat pipe; two electrodes spaced apart on the thin film substrate and electrically connected to the controller; and a heating circuit formed on the thin film substrate, with its two ends connected to the two electrodes.

3. The temperature-controlled pad as described in claim 2, wherein, The heating circuit includes: three long straight segments arranged side by side at intervals and parallel to each other; and a plurality of connecting segments respectively connected to the electrodes and the long straight segments, thereby forming a series circuit between the three long straight segments.

4. The temperature-regulating pad as described in claim 1, wherein, The heat pipe is bent into a U-shape, and both ends and the midpoint of the heat pipe are in contact with the bottom surface.

5. The temperature-controlled pad as described in any one of claims 1 to 4, wherein, The heat-conducting plate is made of metal.

6. The constant temperature pad as described in any one of claims 1 to 4, further comprising a temperature control switch attached to the bottom surface and electrically connected to the controller, the temperature control switch being capable of controlling the controller to stop the heating element from heating when the temperature of the heat-conducting plate reaches or exceeds a specific value.

7. The thermostatic pad as described in any one of claims 1 to 4, further comprising a power cord connected to the controller, the outer sheath of the power cord comprising abrasion-resistant material.

8. The thermostatic pad as described in any one of claims 1 to 4, comprising a waterproof material that covers the controller.

9. The thermostatic pad as described in any one of claims 1 to 4, comprising a heating indicator light electrically connected to the controller.

10. The thermostatic pad as described in any one of claims 1 to 4, comprising a base attached to and surrounding the periphery of the bottom surface, the base extending away from the bottom surface to have a height not exceeding 3 cm, and the maximum distance from the heat pipe, the heating element, and the controller to the bottom surface is less than the height of the base.

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