TR201610890A2 - AUTOMATIC CUTTING CONTROL UNIT IN ELECTRICITY FAILURE - Google Patents

Abstract

In gas type cookers (20), the flame detection sensor (22) connected in series to the taps (14) on the passage of the fuel from the gas source (24) to the gas paths (16) which will feed the cooking chambers (21) and from the flame detection sensor (22). control unit (10) comprising at least one interface (11) which regulates the operation of the valves (15) that remain open with voltage; at least one voltage sensing circuit (12) connected to said interface (11) and interpreting the energy coming from the power supply (23) to the cooker (20), located on the connection path (131) between said interface (11) and the valve (15). and at least one relay (13) which cuts the voltage from the flame detection sensor (22) and closes the gas path (16) by opening the connection path (131) by the command from the sensing circuit (12) in the absence of voltage.

Description

specification Control Unit that automatically cuts off gas in case of power failure Technical Area The invention relates to units that control the gas flow in gas cooking appliances.

Invention, especially, with the help of solenoid valve and similar products, the gas path can be controlled by electrical signals. In case of power cuts, thanks to the voltage detection circuit to which it is connected and connected with a relay. Gas control units that increase safety by cutting the gas path without the need for electricity supply It is related to.

State of the Art In gas cooker applications, it is a general requirement for the gas path to be opened and closed by the user. Mechanical methods are preferred as given. EP1564487 connected in series to the gas bus Magnetic solenoid valve and similar products as in European patent document no. With the help of this, the gas path is made controllable by electrical signals. This is the best an example is the flame detector unit placed in the igniter section.

The flame detector placed in the igniter section and the different ones with many examples in known applications The electrical voltage produced by the sensor units of this type is in series with the gas flow path of the gas cooker compartments. By feeding the connected solenoid valves and similar products, it prevents the gas flow to be cut in certain situations. it provides. For example, when the cooker is ignited after the gas path is opened manually, the flame If the detector cannot detect the flame, it sends a no flame warning and closes the valve. In this way, the gas flame The risk of accident is reduced by preventing it from spreading around.

The fact that the gas path can be cut with the help of electrical signals, various additional safety measures and Allows the use of additional functions. These structures are electronically controlled An external control unit or interfering with the electrical connection of the flame detector with the governors as structures that intervene in the system by interpreting all the feedback elements with the help of can come across. For example; touch-enabled user interface or other With the help of control units, the user can be given the chance to use a timer. User At the end of the time set by the gas, the gas is cut off and the cooking process is terminated.

In the German patent document DE19752472, the electronic control unit as well as the flame There is a structure that controls the valve of the burner depending on the detector and the position sensor.

With these and similar structures, the position of the pot or excessive heat conditions in the environment are detected and the system security can be ensured.

Despite all the above-mentioned safety precautions and functional features, gas and electric Working cooking systems have some disadvantages. At the beginning of these, instant or is that the system becomes uncontrollable in case of continuous power cuts. Because it is electrically controlled gas cookers are designed to work even when there is no electricity. In other words They can work even if the electricity is cut off. In addition, with the help of the control unit by the user (interface, mobile phone, etc.) closing the gas path by opening the gas valve at the end of the set time is expected. However, in case of power failure, the gas is not cut off at the end of the relevant period and the product gas flow continues and cooking continues. This means 'Especially by trusting the system, In cases where it is abandoned, it can create very risky situations.

By using solar panel systems as in the European patent document EP1564487, the valve is closure is possible. However, these are reliable as well as bringing additional costs. they are not. In addition, there is a risk of battery depletion, inability to obtain solar energy and malfunctions. is increasing.

As a result, with the help of solenoid valves and similar products, the gas path can be controlled by electrical signals. In case of power cuts, thanks to the voltage detection circuit to which it is connected and connected with a relay. gas control units that increase the safety by cutting the gas path without the need for electricity supply. The existence of the need and the inadequacy of the existing solutions make it difficult to make a development in the relevant technical field. is mandatory.

Purpose of the Invention The present invention is an invention that meets the above-mentioned requirements, eliminates all disadvantages and relates to gas control units that bring some additional advantages.

The main purpose of the gas control unit, which is the subject of the invention; voltage detection connected to the user interface Detection of whether electricity is supplied from the mains with the circuit and detection of interruptions flame detection via the relay located in the connection path between the valve and the interface in case of It is stopping the operation of the valve by cutting the voltage coming from the sensor and cutting the gas. This It is connected in series to the gas path by the user interface or other control units. Risks arising from long cooking times by not being able to control the valves in power cuts is eliminated. Designed electronic circuit, user's timer function In cases where the system wants to cut off the gas and speed up cooking with the help of In case of electrical cuts, by performing the gas cut-off process, possible safety risks are avoided. precedes it. After the gas is cut, whether there is electricity or not, the user can use the gas stove. can continue to be used manually.

In order to achieve the above-mentioned purposes in the most general form, gas cookers are used in gas type cookers. located on the passage of the fuel from the source to the gas lines that will feed the cooking eyes. from the built-in flame detection sensor, which is connected to the faucets in series and is located in the cooking compartment. control unit comprising at least one interface that regulates the operation of voltage-open valves developed. Developed control unit; connected to the interface and coming from the power supply to the cooker. at least one voltage sensing circuit that senses and interprets the energy, the connection between the interface and the valve connection with the command from the sensing circuit on the path and in the absence of voltage It cuts the voltage coming from the flame detection sensor by opening the path and closes the gas path. contains at least one relay that provides

Structural and characteristic features and all advantages of the invention are given in the following figures and these figures. It will be understood more clearly thanks to the detailed explanation written with references and this Therefore, the evaluation should be made by considering these figures and detailed explanation. required.

Figures to Help Understand the Invention The structuring of the present invention and the best understanding of its advantages with additional elements should be evaluated together with the figures explained below.

Figure-1: It is the top general view of the cooker in which the control unit, which is the subject of the invention, is located.

Figure- 2: The schematic view of the control unit, which is the subject of the invention.

Part References 11 Interface 20 Cooker 12 Voltage sensing circuit 21 Cooker compartment 13 Relay 22 Flame detection sensor 131 Connection path 23 Power supply 14 Tap 24 Gas supply Valve 25 Supply cable Detailed Description of the Invention With the present invention, the cooking chambers of the fuel from the gas source 24 for gas type cookers 20 (21) connected in series to the taps (14) on the gas lines (16) that will feed them. It has been developed to regulate the operation of the valves (15). In the developed control unit (10) is an intermediate device that allows the user to set a timer and cut off the gas with the help of the valve (15). The face (11) and the cooking chamber (21) have a built-in flame detection sensor (22). Figure 1 from the top The flame that occurs in the cooking compartment (21) during the normal operation of the cooker (20), whose general appearance is given, The flame detection sensor (22) generates voltage and the valve, preferably designed of solenoid type, (15) keeps it on. When the timer in the interface (11) reaches its end, the interface (11) A separate command is sent over the connection path (131) between the valve (15) and the valve (15). is switched off and cooking is terminated.

The problem with known applications is that the interface (11) cannot be fed in case of power failure. risk that the valve (15) cannot be closed due to is to create. To solve this problem, the control unit (10); connected to the interface (11) and the power At least one voltage sensing device that senses and interprets the energy coming from the source (23) to the cooker (20) Detection in the absence of voltage and located on the connection path (131) with the circuit (12) By opening the connection path (131) with the command coming from the circuit (12) coming from the flame detection sensor (22). At least one relay (13) is included, which cuts off the voltage and ensures that the gas path (16) is closed.

Figure 2 shows the schematic view of the control unit (10), which is the subject of the invention. In the cooker (20) 220VAC mains voltage as power supply (23) for ignition of the cooking chambers (21) is used. Supply cable to the interface (11) that controls the valve (15) and contains the timer It works with low direct current voltage transmitted by (25) and converted from 220VAC. This voltage in practice it can be 3.3, 5 and 12VDC.

The interface (11) controls the valve (15) with the help of the relay (13) on the connection path (131) and It has the ability to cut. At the same time, the flame detection sensor (22) does not generate voltage and does not operate the valve (15). With practical and fast response In order for the solenoid valve (15) to operate, the flame detection sensor (22) must generate voltage and The relay (13) to which the face (11) is connected must allow the circuit to work.

The interface (11) is connected to the network by taking a sampling signal from 220VAC with the help of the voltage detection circuit (12). can have an idea about the state of the tension. As soon as the mains voltage is cut off, the interface (11) It can stay alive for about 500ms - 23n. This time is determined by the interface (11) and is the structure of the voltage sensing circuit (12). During this period, the flame detection sensor (22) indicates that the flame is cut off. It is determined by the time it takes to understand and open the valve (15).

In the event of a power failure from the power supply (23) the interface (11) will open the relay (13) to ignite. It prevents the voltage coming from the sensing sensor (22) from reaching the valve (15). Closing valve (15) on the other hand, it stops the cooking by closing the gas path (16) and prevents the prevent unsafe situations. In addition, the operation of the cooker (20) when there is no electricity is unhindered. The gas path (16) is opened manually via the tap (14) to allow cooking. can be continued.

Control Unit that automatically cuts off gas in case of power failure In gas type cookers (20), the fuel coming from the gas source (24) will feed the cooking chambers (21). It is connected to the taps (14) on the passage of the gas paths (16) and is connected in series with the cooker. the valves (15) that remain open with the voltage coming from the built-in flame detection sensor (22) in the chamber (21) It is a control unit (10) that regulates its operation and includes at least one interface (11), and its feature is; said By sensing the energy connected to the interface (11) and coming from the power source (23) to the cooker (20) at least one voltage sensing circuit (12) that interprets the interface between said interface (11) and valve (15). In the absence of voltage, which is on the connection path (131) and comes from the detection circuit (12) It cuts the voltage coming from the flame detection sensor (22) by opening the connection path (131) with the command and is that it contains at least one relay (13) that ensures that the path (16) is closed.

Claims (1)

REQUESTS In gas type cookers (20), the fuel coming from the gas source (24) comes from the flame detection sensor (22) located in the cooking chamber (21) which is connected in series to the taps (14) located on the passage of the gas paths (16) that will feed the cooking chambers (21). It is a control unit (10) that regulates the operation of the valves (15) that remain open with the incoming voltage and includes at least one interface (11). - at least one voltage sensing circuit (12) which is connected to the said interface (11) and which senses and interprets the energy coming from the power source (23) to the cooker (20), - the connection path (131) between the said interface (11) and the valve (15) It consists of at least one relay (13) on it, which opens the connection path (131) with the command coming from the detection circuit (12) in the absence of voltage, cuts the voltage coming from the flame detection sensor (22) and ensures the closure of the gas path (16). It is a control unit (10) according to claim 1, its feature is; at least one valve (15) of the solenoid type connected in series to the tap (14) on each gas path (16).