CN213399273U

CN213399273U - Integrated kitchen range control device with child lock function

Info

Publication number: CN213399273U
Application number: CN202022878741.3U
Authority: CN
Inventors: 邵于佶
Original assignee: Zhejiang Sanfer Electric Co Ltd
Current assignee: Zhejiang Sanfer Electric Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-06-08
Anticipated expiration: 2030-12-02

Abstract

The utility model relates to the technical field of integrated cooker control, the children lock of the existing integrated cooker can not forbid the ignition switch, and has the defect of potential safety hazard, the utility model provides an integrated cooker control device with the children lock function, which comprises a DC/DC voltage reduction chip, and the power output end of the integrated cooker outputs a second direct current; the input end of the pulse generating circuit receives the second direct current, and the output end of the pulse generating circuit is coupled with the igniter and used for releasing pulse electricity to generate electric sparks; the key detection circuit is used for detecting whether the child lock is unlocked and generating a detection signal after the child lock is unlocked; the control circuit comprises a signal receiving end and a first signal output end, and the first signal output end is connected with a switch circuit; the switch control circuit comprises a switch tube and a relay, the switch of the relay is connected between the igniter and the grounding terminal in series, and the switch tube is connected with the electromagnet of the relay after receiving a switch control signal so as to break the circuit between the igniter and the grounding terminal; the ignition switch of the gas stove can be forbidden after the child lock is opened, so that potential safety hazards are eliminated.

Description

Integrated kitchen range control device with child lock function

Technical Field

The utility model relates to an integrated kitchen control technology field, concretely relates to integrated kitchen controlling means with child lock function.

Background

The integrated kitchen is the product that collects range hood, gas-cooker, sterilizer, control operation concentrates on the control screen mostly to it, in order to prevent that the in-process mistake that clearance health or children played from touching the control screen and starting equipment, most integrated kitchen all is equipped with child lock, but general child lock is opening the back, only can prevent to touch the control screen because of the mistake and start equipment, but to the gas-cooker, its ignition switch is independent, so current integrated kitchen's child lock all can not forbid the ignition function after opening.

In order to prevent accidents such as gas leakage and fire, an integrated stove control device with a child lock function is urgently needed, and an ignition switch of a gas stove can be forbidden after the child lock is turned on, so that potential safety hazards are eliminated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome above-mentioned current integrated kitchen's children lock can not forbid ignition switch, has the defect of potential safety hazard, provides the integrated kitchen controlling means who has children lock function, can be opening the ignition switch of forbidding gas-cooker behind the children lock to eliminate latent potential safety hazard.

In order to achieve the above object, the utility model discloses a following technical scheme can realize: the integrated cooker control device with the child lock function comprises a DC/DC voltage reduction chip, a power supply and a control unit, wherein the DC/DC voltage reduction chip comprises an enabling end, a power supply input end and a power supply output end; the input end of the pulse generating circuit receives the second direct current, and the output end of the pulse generating circuit is coupled with the igniter and used for releasing pulse electricity to generate electric sparks; the key detection circuit is used for detecting whether the child lock is unlocked and generating a detection signal after the child lock is unlocked; the control circuit comprises a signal receiving end for receiving the detection signal and a first signal output end for generating a control signal when receiving the detection signal, wherein the first signal output end is connected with a control circuit; the switch tube is connected with the electromagnet of the relay after receiving the switch control signal, so that the distance between the igniter and the grounding terminal is broken.

The utility model discloses further preferred scheme does: the control circuit consists of a single chip microcomputer and peripheral circuits thereof.

The utility model discloses further preferred scheme does: the singlechip of the control circuit adopts a chip with the model number of SH79F1622, and the 24 th pin of the singlechip is a signal receiving end and is coupled with the key detection circuit; the 23 rd pin is a first output end and is coupled to the enabling end of the DC/DC voltage reduction chip.

The utility model discloses further preferred scheme does: the 22 nd pin of the singlechip of the control circuit is a first signal output end and is coupled with the switch control circuit.

The utility model discloses further preferred scheme does: the control circuit further comprises a first signal output end, when the signal receiving end receives the detection signal, a second signal output end of the first signal output end outputs low level to the enabling end of the DC/DC voltage reduction chip and controls the DC/DC voltage reduction chip to stop outputting second direct current, so that the pulse generation circuit is powered off.

The utility model discloses further preferred scheme does: the DC/DC voltage reduction chip adopts a chip with the model number of SY8120I, and a 5 th pin of the DC/DC voltage reduction chip is a power supply input end; the 4 th pin is an enabling end;

pins

2 and 3 are grounded; the 1 st and 6 th power output ends are coupled with the pulse generating circuit.

The utility model discloses further preferred scheme does: the voltage of the first direct current is +12V, and the voltage of the second direct current is + 1.5V.

To sum up, the utility model discloses following beneficial effect has: when the child lock function is started, the pulse point power supply for igniting the gas stove can be cut off, the grounding end of the igniter is cut off, and the gas stove does not have the ignition function through double disconnection. Namely, the child cannot operate any function on the integrated cooker under the condition of child lock protection.

Drawings

Fig. 1 is a schematic block diagram of an integrated cooker control device described in embodiment 1.

Fig. 2 is a circuit schematic of the control circuit described in embodiment 1.

Fig. 3 is a schematic circuit diagram of the DC/DC buck chip and its peripheral pulse generating circuit described in embodiment 1.

Fig. 4 is a schematic circuit diagram of the shutdown circuit and the igniter described in embodiment 1.

Wherein:

100. a DC/DC voltage reduction chip; 200. a pulse generating circuit; 300. a key detection circuit; 400. a control circuit; 500. a switch control circuit; 600. an igniter.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

As shown in fig. 1 to 4, the present embodiment provides an integrated cooker control device having a child lock function, which is provided on an integrated cooker, and includes a power circuit, a DC/DC buck chip 100, a pulse generation circuit 200, a key detection circuit 300, and a control circuit 400.

The DC/DC voltage reduction chip comprises an enabling end, a power input end and a power output end, wherein the power input end is coupled with a first direct current, and the power output end outputs a second direct current. In this embodiment, the power circuit converts the commercial power into a first direct current, and then the DC/DC voltage-reducing chip converts the first direct current into a second direct current with a lower voltage for providing the other chips with the working voltage.

The voltage of the first direct current is +12V, and the voltage of the second direct current is + 1.5V. The power circuit converts 220V ac power into +12V dc power, which is not described in detail herein and is omitted.

Specifically, the DC/DC voltage reduction chip adopts a chip with a model number of SY8120I, and a 5 th pin of the DC/DC voltage reduction chip is a power supply input end; the 4 th pin is an enabling end;

pins

And the input end of the pulse generating circuit receives the second direct current, and the output end of the pulse generating circuit is coupled with the igniter and used for releasing the pulse electricity to generate electric sparks. The pulse generating circuit converts the direct current of +1.5V into pulse voltage, which is the prior art, and the specific connection is shown in a peripheral circuit description of a chip of SY 8120I.

In this embodiment, the igniter 600 has two metal members, one of which is connected to the output of the pulse generating circuit, and the other of which is grounded, and discharges through the needle end of the metal member to generate an electric spark.

The key detection circuit is used for detecting whether the child lock is unlocked and generating a detection signal after the child lock is unlocked. Specifically, the child lock is a switch key with one end connected with a high level or a ground, and when the switch key is pressed down, a high level or low level signal is output at the other end of the switch key and is used for being detected by the control circuit.

In this embodiment, the control circuit includes a signal receiving terminal, a second signal output terminal, and a first signal output terminal for generating a control signal when receiving the detection signal, where when the signal receiving terminal receives the detection signal, the second signal output terminal outputs a low level to the enable terminal of the DC/DC voltage-reducing chip and controls the DC/DC voltage-reducing chip to stop outputting the second direct current, so as to power off the pulse generating circuit.

A switch control circuit 500 is connected to the first signal output terminal. The switch tube is connected with the electromagnet of the relay after receiving the switch control signal, so that the distance between the igniter and the grounding terminal is broken.

Specifically, the control circuit is composed of a single chip microcomputer and a peripheral circuit thereof. The singlechip of the control circuit adopts a chip with the model number of SH79F1622, and the 24 th pin of the singlechip is a signal receiving end and is coupled with the key detection circuit; the 23 rd pin is a first output terminal, and is coupled to the enable terminal of the DC/DC buck chip, i.e., the 4 th pin of the SY8120I chip. The 22 nd pin is a first signal output end and is coupled to the switch control circuit.

The control process of this embodiment is as follows:

after the MCU (single chip microcomputer) detects that the child lock key is effective, the 1.5V-EN end of the 23 th pin of the MCU outputs low level, the +1.5V output on the DC/DC voltage reduction chip is forcibly turned off, the 1.5V-output high level control relay is turned off by the 24 th pin of the MCU, the GND of the igniter is disconnected, and the +1.5V and GND power supply loops of the igniter are simultaneously cut off by two paths. After the child lock is effective, the igniter loses power and can not be ignited again.

If the MCU (single chip microcomputer) detects that the child lock key is invalid, the 1.5V-EN end of the 23 th pin of the MCU outputs high level, the +1.5V of the DC/DC voltage reduction chip is normally output, the 1.5V-of the 24 th pin of the MCU is cut off to output low level, the relay does not work, the normally closed end of the relay is connected with GND, the two insertion pieces are electrified by 1.5V to supply power to the igniter, and the igniter can be ignited again after being electrified.

What need particularly say is that the integrated kitchen controlling means with child lock function that this embodiment provided, it is installed on the integrated kitchen of current child lock screen function additional, because the utility model discloses only open the function of the ignition switch of back forbidden gas-cooker through increasing the child lock, consequently also only explain relevant content with this scheme, and other pins of control circuit (singlechip) can be regarded as other actuating mechanism control signal's signal output part, as for cut off the signal output of other pins through child lock, are prior art, and no longer detailed here. Or a main control circuit used for controlling the integrated cooker is further arranged between the child lock and the control circuit, the key detection circuit is achieved through the main control circuit, and the main control circuit is in communication connection with the control circuit. After the child lock is opened, the control of the integrated stove (except the igniter) is cut off through the main control circuit, and meanwhile the main control circuit detects that the child lock is opened and transmits a detection signal to the control circuit for controlling the disconnection of the igniter.

Claims

1. Integrated kitchen controlling means with child's lock function, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the DC/DC voltage reduction chip comprises an enabling end, a power input end and a power output end, wherein the power input end is coupled with a first direct current, and the power output end outputs a second direct current;

the input end of the pulse generating circuit receives the second direct current, and the output end of the pulse generating circuit is coupled with the igniter and used for releasing pulse electricity to generate electric sparks;

the key detection circuit is used for detecting whether the child lock is unlocked and generating a detection signal after the child lock is unlocked;

the control circuit comprises a signal receiving end for receiving the detection signal and a first signal output end for generating a control signal when receiving the detection signal, wherein the first signal output end is connected with a control circuit;

the switch tube is connected with the electromagnet of the relay after receiving the switch control signal, so that the distance between the igniter and the grounding terminal is broken.

2. The control device of the integrated cooker according to claim 1, wherein the control circuit is composed of a single chip microcomputer and peripheral circuits thereof.

3. The control device of the integrated cooker according to claim 2, wherein the single chip microcomputer of the control circuit adopts a chip with the model number of SH79F1622, and the 24 th pin of the chip is a signal receiving end and is coupled to the key detection circuit; the 23 rd pin is a first output end and is coupled to the enabling end of the DC/DC voltage reduction chip.

4. The control device of claim 3, wherein the 22 nd pin of the single chip of the control circuit is a first signal output terminal coupled to the switch control circuit.

5. The control device of claim 4, wherein the control circuit further comprises a first signal output terminal, and when the signal receiving terminal receives the detection signal, a second signal output terminal outputs a low level to the enable terminal of the DC/DC buck chip and controls the DC/DC buck chip to stop outputting a second direct current, so as to power off the pulse generating circuit.

6. The integrated cooker control device according to claim 1, wherein the DC/DC voltage reduction chip is a chip with model number SY8120I, and pin 5 is a power input terminal; the 4 th pin is an enabling end; pins 2 and 3 are grounded; the 1 st and 6 th power output ends are coupled with the pulse generating circuit.

7. The integrated cooker control device according to claim 1, wherein the voltage of the first direct current is +12V, and the voltage of the second direct current is + 1.5V.