CN211910791U

CN211910791U - LED temperature control hair straightener

Info

Publication number: CN211910791U
Application number: CN202020115491.5U
Authority: CN
Inventors: 岳卫杰
Original assignee: Hefei Panxin Electronic Co ltd
Current assignee: Hefei Panxin Electronic Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-11-13
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a LED control by temperature change hair straightener relates to domestic appliance technical field. The utility model discloses in: the main control chip U1 is respectively connected with the display circuit, the temperature sensing circuit, the heating circuit and the key circuit; the temperature sensing circuit detects temperature data information and transmits the temperature data information to the main control chip U1; the main control chip U1 controls the on-off of the heating circuit; the key circuit transmits a control signal to the main control chip U1; the display circuit is used for displaying the set temperature value data; one end of the NTC is connected with a voltage source VCC, and a control electrode of the bidirectional thyristor Q4 is connected with a pin 2 of the main control chip U1; the other two ends of the triac Q4 are connected to an ac power supply ACL and a thermistor PTC2, respectively. The utility model discloses a set up main control chip control heating circuit break-make and control hair straightener and generate heat, set up hair straightener operating temperature through keying circuit to detect the temperature through temperature sensing circuit, thereby control heating circuit's heat time, avoid the high temperature to scald the user.

Description

LED temperature control hair straightener

Technical Field

The utility model belongs to the technical field of domestic appliance, especially, relate to a LED control by temperature change hair straightener.

Background

Some hair straightener heating gears on the market only have four grades, and the temperature control scope is not wide, and the unable accurate control masters the temperature of heating, and unable outage after the certain time has electric power danger. And the ceramic heating element is used, if the temperature of the ceramic heating element is out of control in a circuit, the plastic material for fixing the heating plate can be burnt out, so that the heating plate falls off, and the ceramic heating element can possibly contact with a user and scald the skin.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a LED control by temperature change hair straightener controls hair straightener and generates heat through setting up the main control chip control heating circuit break-make, sets up hair straightener operating temperature through keying circuit to detect the temperature through temperature sensing circuit, thereby control heating circuit's heating time, avoid the high temperature to scald the user.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

the utility model relates to a LED temperature control hair straightener, which comprises a main control chip, wherein the main control chip U1 is respectively connected with a display circuit, a temperature sensing circuit, a heating circuit and a key circuit;

the temperature sensing circuit detects temperature data information and transmits the temperature data information to the main control chip U1; the main control chip U1 controls the on-off of the heating circuit; the key circuit transmits a control signal to the main control chip U1; the display circuit is used for displaying set temperature value data;

a pin 1 of the main control chip U1 is connected with a voltage source VCC, and a pin 16 of the main control chip U1 is grounded;

the display circuit is a three-position nixie tube, and pins 1-8, 10 and 11 of the three-position nixie tube are respectively connected with

pins

3, 5, 6, 7, 9, 10, 11, 12, 13 and 15 of the main control chip U1;

the temperature sensing circuit comprises a temperature sensor NTC, one end of the temperature sensor NTC is connected with a voltage source VCC, and the other end of the temperature sensor NTC is grounded through a resistor R10; the 14 feet of the main control chip U1 are connected between the temperature sensor NTC and the resistor R10;

a control electrode of a bidirectional thyristor Q4 in the heating circuit is connected with a pin 2 of a main control chip U1; the other two ends of the bidirectional thyristor Q4 are respectively connected with an alternating current power supply ACL and a thermistor PTC 2;

the key circuit comprises three relays, and the relays are respectively connected with the

pins

7, 9 and 10 of the main control chip through a resistor.

Further, the model of the main control chip is M8P 613.

The utility model discloses following beneficial effect has:

the utility model discloses a set up main control chip control heating circuit break-make and control hair straightener and generate heat, set up hair straightener operating temperature through keying circuit to detect the temperature through temperature sensing circuit, thereby control heating circuit's heat time, avoid the high temperature to scald the user.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a circuit diagram of an LED temperature-controlled hair straightener;

FIG. 2 is a circuit diagram of a heating circuit;

FIG. 3 is a circuit diagram of a temperature sensing circuit;

FIG. 4 is a circuit diagram of a display circuit;

FIG. 5 is a circuit diagram of the key circuit.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", and the like, indicate positional or positional relationships, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-5, the present invention relates to an LED temperature controlled hair straightener, which comprises a main control chip, wherein the model of the main control chip is M8P 613; the main control chip U1 is respectively connected with the display circuit, the temperature sensing circuit, the heating circuit and the key circuit;

the temperature sensing circuit detects temperature data information and transmits the temperature data information to the main control chip U1; the main control chip U1 controls the on-off of the heating circuit; the key circuit transmits a control signal to the main control chip U1; the display circuit is used for displaying the set temperature value data;

a pin 1 of the main control chip U1 is connected with a voltage source VCC, and a pin 14 of the main control chip U1 is connected between the NTC and the resistor R10; the 16 pins of the main control chip U1 are grounded;

pins

3, 5, 6, 7, 9, 10, 11, 12, 13 and 15 of the main control chip U1;

as shown in fig. 3, the temperature sensing circuit includes a temperature sensor NTC, one end of the temperature sensor NTC is connected to a voltage source VCC, and the other end of the temperature sensor NTC is grounded through a resistor R10;

a control electrode of a bidirectional thyristor Q4 in the heating circuit is connected with a pin 2 of a main control chip U1; a resistor R14 is connected between the control electrode of the bidirectional thyristor Q4 and the pin 2 of the main control chip U1; the other two ends of the bidirectional thyristor Q4 are respectively connected with an alternating current power supply ACL and a thermistor PTC 2;

pins

7, 9 and 10 of the main control chip through a resistor.

The NTC is arranged at a position close to the PTC2 to detect the real-time temperature of the PTC2, when the product works, the resistance value of the product changes after the temperature sensor NTC receives the temperature conducted by the PTC2, the temperature is converted into a voltage signal through resistor voltage division and sent to the main control chip U1, the main control chip U1 detects the signal to judge whether the temperature of the PTC2 reaches the set required temperature, the output is cut off after the temperature reaches the set required temperature, the bidirectional thyristor Q4 is not conducted, and the PTC2 does not generate heat. When the detected temperature is lower than the set required temperature, the output of the main control chip U1 pushes the bidirectional thyristor Q4 to conduct the thermistor PTC2 to heat and work.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a LED control by temperature change hair straightener, includes main control chip, its characterized in that: the main control chip U1 is respectively connected with the display circuit, the temperature sensing circuit, the heating circuit and the key circuit;

the display circuit is a three-position nixie tube, and pins 1-8, 10 and 11 of the three-position nixie tube are respectively connected with pins 3, 5, 6, 7, 9, 10, 11, 12, 13 and 15 of the main control chip U1;

the key circuit comprises three relays, and the relays are respectively connected with the pins 7, 9 and 10 of the main control chip through a resistor.

2. The LED temperature-control hair straightener of claim 1, wherein the model of the main control chip is M8P 613.