WO2013007067A1 - Heating temperature sensor with working state indicator - Google Patents

Abstract

A heating temperature sensor with a working state indicator, comprising an indication device for indicating the working state of the heating temperature sensor; the working state comprising the following three types: when the water temperature does not reach a preset point, the heating element of the heating temperature sensor heats normally; when the water temperature reaches the preset point, the heating element does not heat; and when the heating element is abnormal, the heating temperature sensor cuts off the power of the heating element. The LED light of the indication device emits light of different colors respectively in the three different working states, so that a user can clearly know whether the heating temperature sensor is working normally.

Description

 Heating sensor with working status indication

Technical field

 The invention belongs to the technical field of aquarium, aquaculture equipment and other temperature regulation systems, and particularly relates to a indicating device with direct indication of the working state of the heating sensor

Background technique

 In the aquarium or aquaculture sector, heating rods are often used to maintain water temperature, allowing organisms such as farmed fish to have a comfortable living environment in the cold winter. The heating rod is mainly composed of a heating system and a temperature control system (Fig. 1). The function of the heating system is to increase the temperature of the water. The function of the temperature control system is to sense the surrounding water temperature. When the water temperature exceeds the set temperature, the temperature control system The circuit will be disconnected to stop the heating system from heating. When the water temperature is low, the temperature control system will reclose the circuit to reheat the heating system to control the water temperature. The traditional heating rod indicates that the power is turned on or off by a xenon lamp or LED lamp. The heater has a defect that it is impossible to clearly understand the working state of the heating bar from the indication. If the xenon lamp or the LED lamp is off, it cannot be Understand whether the power supply is not plugged in or the temperature reaches the set point. When the heating element is abnormal, the temperature control protection switch can not be indicated.

 Summary of the invention

 It is an object of the present invention to provide an indicating device that directly indicates the operating state of the heating rod for the above-mentioned deficiencies. To achieve the above object, the indicating device of the present invention consists of a three-color LED lamp and two diodes, two resistors, as shown in the drawing:

 A: When the double metal piece is closed, the heating element is powered on, and the current is supplied to the LED lamp (such as red) through the diode (D1) and the resistor (R1) to make the LED light illuminate and the watch product is heating.

 B: When the double metal piece is bounced, the current is supplied to the second LED (such as green) via the heating element (Heater), the temperature control switch (SW), the resistor (R2) and the diode (D2), so that the LED lamp Bright, because the current is too small, the heating element will not heat up. Indicates that the product temperature has reached the set point.

 C: When the heating element is abnormal, the temperature switch (SW) will pop open. At this time, the current will be the first light as in the A mode state, and the current will pass through the heating element (Heater), the resistance (R2) and the diode (D2). The third LED light (such as blue) is powered to make the LED light bright. Since the current is too small, the heating element will not heat up. Indicates that there is an abnormality in the heating element of the product.

DRAWINGS

 Figure 1 is a schematic view showing the main structure of a heating rod.

 Figure 2 is a schematic view of the modified structure of the present invention.

Claims

 1. A heating temperature sensor with an indication of the working state, which can directly indicate the working state of the heating rod. (Figure 2)  2. The working condition indicating device according to claim 1, comprising a three-color LED lamp and two diodes, two resistors, as shown in the drawing:  A: When the double metal piece is closed, the heating element is powered on, and the current is supplied to the LED (such as red) through the diode (D1) and the resistor (R1) to make the LED light and the watch product is heating.  B: When the double metal piece is bounced, the current is supplied to the second LED (such as green) via the heating element (Heater), the temperature control switch (SW), the resistor (R2) and the diode (D2), so that the LED lamp Bright, because the current is too small, the heating element will not heat up. Indicates that the product temperature has reached the set point.  C: When the heating element is abnormal, the temperature switch (SW) will pop open. At this time, the current will be the first light as in the A mode state, and the current will pass through the heating element (Heater), the resistance (R2) and the diode (D2). The third LED light (such as blue) is powered to make the LED light bright. Since the current is too small, the heating element will not heat up. Indicates that there is an abnormality in the heating element of the product.  3. According to claim 2, the heating rod can be made more intuitive to indicate the working posture.