A safety control switch device for gas appliances

Abstract

This utility model discloses a safety control switch device for gas appliances, relating to the field of gas equipment safety control technology. The device is installed on the gas inlet pipe outside the gas appliance and includes a power supply, a timer, a confirmation button, a solenoid valve, an indicator light, an inlet pipe, an outlet pipe, and a housing. The power supply is a dry cell battery. The timer is connected to the power supply to set the conduction current time. The confirmation button is connected to the timer. The solenoid valve and indicator light are respectively connected to the confirmation button. The inlet pipe connects the gas source to the solenoid valve, and the outlet pipe connects the solenoid valve to the gas appliance. In use, the time is set by rotating the timer knob. After confirming safety, the confirmation button is pressed, causing the solenoid valve to open and the indicator light to illuminate, allowing gas to enter the gas appliance through the device. After the timer expires, the timer disconnects the circuit, the solenoid valve closes, and the indicator light goes out. This device facilitates maintenance and repair, ensures safe use of the gas appliance under supervision, and improves usage safety.

Description

Technical Field

[0001] This utility model relates to the field of gas equipment safety control technology, and in particular to a gas appliance safety control switch device. Background Technology

[0002] Currently, when using gas stoves for cooking and heating food at home, there is a frequent risk of fire due to forgetting to turn off the heat. This is especially true when performing cooking operations that require long periods of simmering, stewing, and soup making. As the cooking time extends, if the cook leaves midway and forgets to turn off the heat, dangerous situations such as dry burning can easily occur.

[0003] To avoid dangers such as dry burning or gas leaks due to hot water soaking the burner during cooking, existing gas stoves generally have functions such as anti-dry burning, timer switch, and flameout protection. However, if these functions malfunction, the entire gas stove must be repaired, making maintenance difficult and causing inconvenience to normal cooking. Utility Model Content

[0004] To address the aforementioned issues, this utility model aims to propose a gas appliance safety control switch device. By providing a confirmation button electrically connected to a timer, the user at the location of the gas appliance can activate the confirmation button and open the solenoid valve to allow gas to flow after confirming that the gas appliance knob switch has been reset, the pipeline is not loose, and there is no gas leakage. This ensures that the gas appliance is used under full on-site supervision, thereby improving safety.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A gas appliance safety control switch includes a power supply module, a timing module, a confirmation module, an execution module, an indicator module, an inlet channel, and an outlet channel. The timing module is electrically connected to the power supply module and is used to set the current conduction duration. The confirmation module is electrically connected to the timing module. The execution module is electrically connected to the confirmation module and is used to control the on / off state of the gas passage. The indicator module is electrically connected to the confirmation module and is used to indicate the working status of the device. The inlet channel is connected to a gas source and through the execution module, and the outlet channel is connected to the gas appliance and to the execution module.

[0006] Furthermore, the power supply module includes several dry cell batteries.

[0007] Furthermore, the timing module is a mechanical timer, which includes a knob and a time dial.

[0008] Furthermore, the scale of the time dial can be set as needed.

[0009] Furthermore, the confirmation module is a push-button switch.

[0010] Furthermore, the execution module is a solenoid valve, which opens the gas passage when energized and cuts off the gas passage when not energized.

[0011] Furthermore, the indicator module is an indicator light, which lights up when powered on and turns off when not powered on.

[0012] Furthermore, the gas appliance safety control switch is installed on the gas pipeline outside the gas appliance.

[0013] Furthermore, it also includes a housing, the interior of which forms an accommodating space, and the power supply module, timing module and execution module are located within the accommodating space.

[0014] Beneficial Effects: This utility model's gas appliance safety control switch device includes a confirmation button electrically connected to a timer. This allows the user at the gas appliance's location to activate the confirmation button and open the solenoid valve to allow gas flow after confirming that the gas appliance's rotary switch has reset, the pipeline is not loose, and there is no gas leakage. Therefore, this utility model ensures that the gas appliance is used under full on-site supervision, improving safety. Furthermore, this device is located externally to the gas appliance, requiring no special tools for installation or removal, and the power supply is easy to replace, offering the advantages of intuitive and convenient operation. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 This is a functional structure diagram of the gas appliance safety control switch device described in an embodiment of the present invention. Detailed Implementation

[0016] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Example 1 See Figure 1A gas appliance safety control switch device includes a power supply module 1, a timing module 2, a confirmation module 3, an execution module 4, an indicator module 5, an inlet channel 6, and an outlet channel 7. The timing module 2 is electrically connected to the power supply module 1 and is used to set the current conduction time. The confirmation module 3 is electrically connected to the timing module 2. The execution module 4 is electrically connected to the confirmation module 3 and is used to control the on / off of the gas passage. The indicator module 5 is electrically connected to the confirmation module 3 and is used to indicate the working status of the device. The inlet channel 6 is connected to a gas source 9 and is connected through the execution module 4. The outlet channel 7 is connected to a gas appliance 10 and is connected to the execution module 4.

[0019] In a specific example, the power supply module 1 includes several dry cell batteries, the timing module 2 is a mechanical timer, the mechanical timer includes a knob and a time dial, the scale of the time dial can be set as needed, the confirmation module 3 is a push switch, the execution module 4 is a solenoid valve, the solenoid valve opens the gas passage when energized and cuts off the gas passage when not energized, the indicator module 5 is an indicator light, the indicator light lights up when energized and turns off when not energized, and the gas appliance safety control switch device is installed on the gas pipeline outside the gas appliance 10.

[0020] In a specific example, the system also includes a housing 8, which forms an accommodating space, within which the power supply module 1, the timing module 2, and the execution module 4 are located.

[0021] The device operates as follows: First, the user rotates the knob on the timer to set an approximate gas usage time (i.e., the current conduction time). At this time, the current supplied by the power source reaches the confirmation button via the timer. The user checks whether the gas appliance is safe and whether the pipeline is loose. After confirming that the usage environment is safe, the user presses the confirmation button. The current from the power source is then input sequentially through the timer and the confirmation button to the solenoid valve and indicator light, controlling the solenoid valve to open, and the indicator light illuminates. In this way, the natural gas supplied by the gas source can enter the solenoid valve through the inlet pipe and then be output to the gas appliance for combustion and heating through the outlet pipe. When the timer reaches the set time, the circuit inside the timer is disconnected from the power source, the entire device is in an open circuit state, the indicator light goes out, and the solenoid valve closes.

[0022] In a specific implementation, the gas appliance safety control switch device of this embodiment is used to be installed on the gas inlet pipe of the gas stove to achieve safety control during the use of the gas stove and avoid safety accidents caused by forgetting to turn off the gas.

[0023] The specific structure of the device is as follows: Housing: Made of high-temperature resistant ABS plastic, it has a rectangular structure, 15cm long, 8cm wide and 6cm high. The interior forms a closed space to accommodate various electrical components. The surface of the housing has openings for the timer knob, confirmation button and indicator light to be exposed, and the openings are sealed to prevent gas leakage from entering the housing.

[0024] Power supply module: It uses two 1.5V AA dry batteries, which are installed in the battery compartment inside the casing. The battery compartment has a removable cover for easy battery replacement and provides power to the entire device.

[0025] The timer module is a mechanical timer, using a common 60-minute mechanical timer switch. It is electrically connected to the power supply module via wires. The timer knob extends from the housing surface for the user to rotate. Below the knob is a time dial marked with 0-60 minute increments, with the smallest increment being 5 minutes. The user can rotate the knob to set the current conduction time (i.e., the duration for which the gas appliance is allowed to supply gas).

[0026] Confirmation module: It is a self-resetting push-button switch, which is installed on the surface of the housing near the timer knob. Its input terminal is electrically connected to the output terminal of the timing module through a wire. When pressed, the switch is turned on, and when released, it automatically resets and disconnects.

[0027] Execution module: It is a normally closed solenoid valve, model DN15 gas-specific solenoid valve, installed in the middle position inside the housing. Its input end is electrically connected to the output end of the confirmation module through a wire. The gas inlet of the solenoid valve is connected to the household gas pipeline (gas source pipe) through the gas inlet pipe, and the gas outlet is connected to the gas inlet of the gas stove through the gas outlet pipe. When the solenoid valve is energized, the valve core opens, allowing gas to flow from the gas inlet to the gas outlet. When it is not energized, the valve core closes, cutting off the gas passage.

[0028] Indicator module: An LED indicator light with a red light source is installed on the surface of the housing next to the confirmation button. It is electrically connected to the output terminal of the confirmation module via a wire. When the device is powered on, the indicator light illuminates, indicating that the gas passage is open. When the device is powered off, the indicator light goes out, indicating that the gas passage has been cut off.

[0029] Air intake and exhaust channels: Both the air intake and exhaust pipes are made of corrosion-resistant stainless steel corrugated pipes with a diameter of 1.5cm. One end of the air intake pipe is sealed to the gas source pipe through a threaded joint, and the other end is sealed to the air intake port of the solenoid valve. One end of the exhaust pipe is sealed to the air outlet port of the solenoid valve, and the other end is sealed to the air intake port of the gas stove through a threaded joint.

[0030] The working process of this embodiment is as follows: Before using the gas stove, the user first rotates the knob of the timer module and sets the time to 30 minutes according to the cooking needs (for example, stewing food requires 30 minutes). At this time, a circuit is formed between the power supply module, the timer module and the confirmation module, and the current can reach the input terminal of the confirmation module through the timer module.

[0031] Then, the user checks whether the gas stove knob is in the off position, whether the gas inlet and outlet pipes are securely connected, and whether there is any gas leak or odor in the surrounding area. After confirming that everything is in order, the user presses the button switch of the confirmation module. At this time, the confirmation module is turned on, and the current flows through the timing module, the confirmation module and into the execution module and the indicator module in sequence.

[0032] When the solenoid valve of the execution module is energized, the valve core opens, and gas enters the solenoid valve from the gas source pipe through the gas inlet pipe, and then is delivered to the gas stove through the gas outlet pipe, so that the user can ignite the gas stove for cooking; at the same time, the LED indicator of the indicator module lights up to indicate that the gas passage is currently open.

[0033] When the 30-minute set time expires, the internal mechanical structure of the timer module triggers a power cut-off, disconnecting the circuit between the timer module and the power supply module. The solenoid valve of the execution module loses current, and the valve core closes under the action of spring force, cutting off the gas passage and automatically extinguishing the gas stove. At the same time, the LED indicator of the indicator module goes out, indicating that the device has stopped working.

[0034] The device in this embodiment ensures that the gas stove is connected to the gas only after the user confirms that it is safe to do so on-site, and automatically cuts off the gas after the set time. This effectively avoids safety risks such as dry burning and gas leakage caused by forgetting to turn off the stove. At the same time, the device is installed on the outside of the gas stove, so if a malfunction occurs, it can be disassembled and repaired or replaced separately without having to deal with the entire gas stove, making maintenance and repair more convenient.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas appliance safety control switch device, characterised in that, It includes a power supply module (1), a timing module (2), a confirmation module (3), an execution module (4), an indicator module (5), an air inlet channel (6), and an air outlet channel (7); the timing module (2) is electrically connected to the power supply module (1) and is used to set the current conduction time; the confirmation module (3) is electrically connected to the timing module (2); the execution module (4) is electrically connected to the confirmation module (3) and is used to control the opening and closing of the gas passage; the indicator module (5) is electrically connected to the confirmation module (3) and is used to indicate the working status of the device; the air inlet channel (6) is connected to the gas source (9) and is connected through the execution module (4); the air outlet channel (7) is connected to the gas appliance (10) and is connected to the execution module (4).

2. A gas appliance safety control switch device according to claim 1, characterised in that, The power supply module (1) includes several dry batteries.

3. A gas appliance safety control switch device according to claim 1, characterised in that, The timing module (2) is a mechanical timer, which includes a knob and a time dial.

4. A gas appliance safety control switch arrangement according to claim 3, characterised in that, The scale of the time dial can be set as needed.

5. A gas appliance safety control switch device according to claim 1, characterised in that, The confirmation module (3) is a push-button switch.

6. A gas appliance safety control switch device according to claim 1, characterised in that, The execution module (4) is a solenoid valve. When the solenoid valve is energized, it opens the gas passage, and when it is not energized, it cuts off the gas passage.

7. A gas appliance safety control switch device according to claim 1, characterised in that, The indicator module (5) is an indicator light, which lights up when powered on and turns off when not powered on.

8. A gas appliance safety control switch device according to claim 1, characterised in that, The gas appliance safety control switch is installed on the gas pipeline outside the gas appliance (10).

9. A gas appliance safety control switch device according to claim 1, characterised in that, It also includes a housing (8), inside which a accommodating space is formed, and the power supply module (1), timing module (2) and execution module (4) are located in the accommodating space.

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