Energy-saving and heat-insulating circuit for towel heater

Abstract

The present application discloses an energy-saving and heat-preserving circuit of a towel heater, comprising: a step-down circuit, a main control circuit, a heating control circuit, and an indicator light circuit; the step-down circuit, the heating control circuit, and the indicator light circuit are respectively connected to the main control circuit, the step-down circuit is used to reduce the voltage of the mains, the main control circuit is used to control the operation of the heating control circuit and the indicator light circuit, the heating control circuit receives control information from the main control circuit, and performs adaptive work; the indicator light circuit receives control information from the main control circuit, and performs adaptive work, the main control circuit has a timing function, and adopts the above design, the main control circuit controls the intermittent operation of the heating device, compared with the prior art, with the same volume of water, the working time can be three times longer, and the power consumption per hour is two-thirds less than before, which achieves the towel heat preservation effect, saves energy, and has a good use effect.

Description

Technical Field

[0001] The utility model relates to the technical field of towel heaters, in particular to an energy-saving and heat-insulating circuit of a towel heater. Background Art

[0002] A heated towel bucket is a device that heats towels for comfort. It usually consists of an electric heating element and a bucket that holds the towels and a cover. Users can place wet towels in the bucket and then turn on the heater to warm and moisten the towels. In addition, heated towel buckets can also help kill bacteria and reduce odors because high temperatures can kill bacteria and fungi.

[0003] The existing towel heating barrel has only one mechanical timer. After it is turned on, the heating tube always works at maximum power and stops after heating is completed. When the temperature drops and needs to be heated again, it also works at maximum power. This working mode consumes a lot of water and electricity, has no insulation function, and consumes a lot of energy.

[0004] Therefore, it is urgent to design an energy-saving and heat-preserving circuit for a towel heater to overcome the above-mentioned deficiencies of one or more prior arts. Summary of the invention

[0005] The technical solution adopted by the utility model to solve the above technical problems is: an energy-saving and heat-preserving circuit of a towel heater, characterized in that it includes: a step-down circuit, a main control circuit, a heating control circuit, and an indicator light circuit; the step-down circuit, the heating control circuit, and the indicator light circuit are respectively connected to the main control circuit, the step-down circuit is used to reduce the voltage of the main power, the main control circuit is used to control the operation of the heating control circuit and the indicator light circuit, the heating control circuit receives the control information of the main control circuit, and performs adaptive work; the indicator light circuit receives the control information of the main control circuit, and performs adaptive work, and the main control circuit has a timing function.

[0006] In a preferred embodiment, the step-down circuit includes: a fuse F1, a varistor RZ1, a capacitor C1, a resistor R2, a current-limiting resistor R1, a voltage regulator diode ZR1, a diode D1, a capacitor CE1, a voltage regulator U1, a capacitor C6, and a capacitor C7; the fuse F1 is connected in series with the varistor RZ1, the capacitor C1 is connected in series with the fuse F1, the resistor R2 is connected in parallel with the capacitor C1, the current-limiting resistor R1 is connected in series with the parallel branch of the capacitor C1 and the resistor R2, the voltage regulator diode ZR1 is connected in series with the current-limiting resistor R1, the diode D1 is connected in series with the current-limiting resistor R1, the capacitor CE1 is connected in series with the diode D1, the voltage regulator U1 is connected in series with the diode D1, the capacitor C6 and the capacitor C7 are connected in series with the voltage regulator U1, and the varistor RZ1, the voltage regulator diode ZR1, the capacitor CE1, the voltage regulator U1, and the capacitor C7 are also connected in series with a negative line.

[0007] In a preferred embodiment, the heating control circuit includes: resistor R7, capacitor C8, resistor R22, resistor R4, resistor R5, optocoupler U3, resistor R3, and bidirectional thyristor TR6; the resistor R22 is connected in parallel with the capacitor C8, the parallel branch of the resistor R22 and the capacitor C8 is connected in series with the resistor R7, and the resistor R7 is connected to the detection port and the input port of the power supply in the main control circuit; the resistor R5 is connected to the control end of the main control circuit, the optocoupler U3 is connected in series with the R5, the resistor R3 is connected to the optocoupler U3, the resistor R3 is also connected to the resistor R7, the bidirectional thyristor TR6 is connected to the optocoupler U3 and the resistor R3, the resistor R4 is connected in parallel with the bidirectional thyristor TR6, and is connected to an external heating device.

[0008] In a preferred embodiment, the indicator light circuit comprises: a current limiting resistor R6, an indicator light, and an LED; the current limiting resistor R6 is connected in series with the indicator light and the LED in sequence.

[0009] In a preferred embodiment, the main control circuit includes: port 8, port 5, port 4, and port 7; the port 7 and the port 5 are connected to the heating control circuit, the port 4 is connected to the indicator light circuit, and the port 8 is connected to the step-down circuit.

[0010] The beneficial effects of the utility model are: the main control circuit controls the intermittent operation of the heating device. Compared with the prior art, when the same volume of water is added, the working time can be three times longer, and the power consumption per hour is two-thirds less than before, which achieves the towel insulation effect and saves energy, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a principle block diagram of the utility model;

[0012] Figure 2 The circuit diagram of the step-down circuit of the utility model;

[0013] Figure 3 This is a circuit diagram of the main control circuit of the utility model;

[0014] Figure 4 This is a circuit diagram of the heating control circuit of the utility model;

[0015] Figure 5 The utility model is a circuit diagram of the indicator light circuit.

[0016] In the figure:

[0017] 10. Step-down circuit; 11. Main control circuit; 12. Heating control circuit; 13. Indicator light circuit. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "connection" can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed" means that they are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0020] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0021] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0022] References to "one embodiment" or "some embodiments" etc. described in this specification mean that one or more embodiments of the utility model include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. Therefore, the utility model is not limited to the specific embodiments disclosed below.

[0023] like Figure 1-Figure 5 As shown, the utility model provides an energy-saving and heat-insulating circuit of a towel heater, characterized in that it includes: a step-down circuit 10, a main control circuit 11, a heating control circuit 12, and an indicator light circuit 13; the step-down circuit 10, the heating control circuit 12, and the indicator light circuit 13 are respectively connected to the main control circuit 11, the step-down circuit 10 is used to step down the voltage of the main power, the main control circuit 11 is used to control the operation of the heating control circuit 12 and the indicator light circuit 13, the heating control circuit 12 receives the control information of the main control circuit 11, and performs adaptive work; the indicator light circuit 13 receives the control information of the main control circuit 11, and performs adaptive work, and the main control circuit 11 has a timing function;

[0024] Further, in the present embodiment, the step-down circuit 10 includes: a fuse F1, a varistor RZ1, a capacitor C1, a resistor R2, a current-limiting resistor R1, a voltage regulator diode ZR1, a diode D1, a capacitor CE1, a voltage regulator U1, a capacitor C6, and a capacitor C7; the fuse F1 is connected in series with the varistor RZ1, the capacitor C1 is connected in series with the fuse F1, the resistor R2 is connected in parallel with the capacitor C1, the current-limiting resistor R1 is connected in series with the parallel branch of the capacitor C1 and the resistor R2, the voltage regulator diode ZR1 is connected in series with the current-limiting resistor R1, the diode D1 is connected in series with the current-limiting resistor R1, the capacitor CE1 is connected in series with the diode D1, the voltage regulator U1 is connected in series with the diode D1, the capacitor C6 and the capacitor C7 are connected in series with the voltage regulator U1, and the varistor RZ1, the voltage regulator diode ZR1, the capacitor CE1, the voltage regulator U1, and the capacitor C7 are also connected in series with a negative line;

[0025] Further, in the present embodiment, the heating control circuit 12 includes: a resistor R7, a capacitor C8, a resistor R22, a resistor R4, a resistor R5, an optical coupler U3, a resistor R3, and a bidirectional thyristor TR6; the resistor R22 is connected in parallel with the capacitor C8, the parallel branch of the resistor R22 and the capacitor C8 is connected in series with the resistor R7, and the resistor R7 is connected to the detection port and the input port of the power supply in the main control circuit 11; the resistor R5 is connected to the control end of the main control circuit 11, the optical coupler U3 is connected in series with the R5, the resistor R3 is connected to the optical coupler U3, the resistor R3 is also connected to the resistor R7, the bidirectional thyristor TR6 is connected to the optical coupler U3 and the resistor R3, the resistor R4 is connected in parallel with the bidirectional thyristor TR6, and is connected to an external heating device;

[0026] Furthermore, in this embodiment, the indicator light circuit 13 includes: a current limiting resistor R6, an indicator light, and an LED; the current limiting resistor R6 is connected in series with the indicator light and the LED in sequence;

[0027] Further, in this embodiment, the main control circuit 11 includes: port 8, port 5, port 4, and port 7; the port 7 and the port 5 are connected to the heating control circuit 12, the port 4 is connected to the indicator light circuit 13, and the port 8 is connected to the step-down circuit 10;

[0028] Specifically, the power line is connected to the mains power through the fuse F1 and the varistor RZ1 (overvoltage protection) protection circuit, -> capacitor C1 and resistor R2 reduce the voltage -> current limiting resistor R1 limits the current -> voltage stabilization diode ZR1 obtains 12V voltage -> diode D1 half-wave rectifier, capacitor CE1 filters to obtain direct current -> voltage stabilizer U1, C6, C7 filter capacitor filters to obtain 5VDC DC voltage, which enters port 8 in the main control circuit 11, where the voltage stabilizer is a low voltage difference linear regulator, port 7 is the detection port, and the current passes through resistor R7, capacitor C8, and resistor R22 Zero detection, port 7 receives the detection signal, and opens the bidirectional thyristor TR6 at the zero point of the AC power during heating to reduce interference with the mains. Port 5 drives the bidirectional thyristor TR6 to turn on and off through resistor R5, optocoupler U3, resistor R3, and resistor R4 to power the heating element for heating. The step-down circuit 10 is also connected to the heating control circuit 12, and the heating control circuit 12 is connected after the fuse F1 and before the varistor. The current flows into the heating control circuit 12 through the fuse F1 and flows into the step-down circuit 10 for step-down, and outputs a low level to the LED through port 4 of the main control circuit 11.

[0029] During the working process, one path of the city electricity flows into the main control circuit 11 after being stepped down by the step-down circuit 10, and supplies power to the main control circuit 11 and the indicator light. The other path flows into the heating control circuit 12. The main control circuit 11 has a timing function. When the power is turned on, the main control circuit 11 starts timing. When the power is turned on for the first time, it continues to heat until the water boils. After the water boils, the main control circuit 11 controls the heating tube to work intermittently and performs intermittent cyclic heating to achieve the function of heat preservation. Through the setting of this circuit, the heating device works intermittently. When the same volume of water is added, the working time can be three times longer, and the power consumption per hour is two-thirds less than before, which achieves the effect of towel insulation and saves energy, and at the same time controls the indicator light to light up.

[0030] To sum up, the present application controls the intermittent operation of the heating device through the main control circuit. Compared with the prior art, with the same volume of water, the working time can be three times longer and the power consumption per hour is two-thirds less than before. It can achieve the towel insulation effect and save energy, and has a good use effect.

[0031] The present invention is not limited to what is described in the specification and implementation modes, and therefore, additional advantages and modifications can be easily realized by those familiar with the art. Therefore, without departing from the spirit and scope of the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details, representative devices, and illustrative examples shown and described herein.

Claims

1. An energy-saving and heat-insulating circuit for a towel heater, characterized in that: include: A step-down circuit, a main control circuit, a heating control circuit and an indicator light circuit; the step-down circuit, the heating control circuit and the indicator light circuit are respectively connected to the main control circuit, the step-down circuit is used to step down the AC power, the main control circuit is used to control the operation of the heating control circuit and the indicator light circuit, the heating control circuit receives control information from the main control circuit and performs adaptive work; the indicator light circuit receives control information from the main control circuit and performs adaptive work, and the main control circuit has a timing function.

2. The energy-saving and heat-insulating circuit of the towel heater according to claim 1, characterized in that: The step-down circuit includes: a fuse F1, a varistor RZ1, a capacitor C1, a resistor R2, a current-limiting resistor R1, a voltage regulator diode ZR1, a diode D1, a capacitor CE1, a voltage regulator U1, a capacitor C6, and a capacitor C7; the fuse F1 is connected in series with the varistor RZ1, the capacitor C1 is connected in series with the fuse F1, the resistor R2 is connected in parallel with the capacitor C1, the current-limiting resistor R1 is connected in series with the parallel branch of the capacitor C1 and the resistor R2, the voltage regulator diode ZR1 is connected in series with the current-limiting resistor R1, the diode D1 is connected in series with the current-limiting resistor R1, the capacitor CE1 is connected in series with the diode D1, the voltage regulator U1 is connected in series with the diode D1, the capacitor C6 and the capacitor C7 are connected in series with the voltage regulator U1, and the varistor RZ1, the voltage regulator diode ZR1, the capacitor CE1, the voltage regulator U1, and the capacitor C7 are also connected in series with a negative line.

3. The energy-saving and heat-insulating circuit of the towel heater according to claim 1, characterized in that: The heating control circuit includes: a resistor R7, a capacitor C8, a resistor R22, a resistor R4, a resistor R5, an optical coupler U3, a resistor R3, and a bidirectional thyristor TR6; the resistor R22 is connected in parallel with the capacitor C8, the parallel branch of the resistor R22 and the capacitor C8 is connected in series with the resistor R7, and the resistor R7 is connected to the detection port in the main control circuit and the input port of the power supply; the resistor R5 is connected to the control end of the main control circuit, the optical coupler U3 is connected in series with the R5, the resistor R3 is connected to the optical coupler U3, the resistor R3 is also connected to the resistor R7, the bidirectional thyristor TR6 is connected to the optical coupler U3 and the resistor R3, the resistor R4 is connected in parallel with the bidirectional thyristor TR6, and is connected to an external heating device.

4. The energy-saving and heat-insulating circuit of the towel heater according to claim 1, characterized in that: The indicator light circuit comprises: a current limiting resistor R6, an indicator light, and an LED; the current limiting resistor R6 is connected in series with the indicator light and the LED in sequence.

5. The energy-saving and heat-insulating circuit of the towel heater according to claim 1, characterized in that: The main control circuit includes: port 8, port 5, port 4, and port 7; the port 7 and the port 5 are connected to the heating control circuit, the port 4 is connected to the indicator light circuit, and the port 8 is connected to the step-down circuit.

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