Gas water heater with leakage detection function

Abstract

The utility model relates to the field of water heaters, and provides a gas water heater with a leakage detection function in order to improve the use safety of the gas water heater, two sensors are integrated in the gas water heater, air in the gas water heater circulates, gas leakage is avoided under the normal condition, combustion is sufficient, and the concentration of carbon monoxide is within the standard range. The water heater works normally; once unforeseen circumstances occur, if gas leakage occurs or insufficient combustion causes gas concentration exceeding or carbon monoxide concentration exceeding, the sensor feeds back the unforeseen circumstances to the control unit, and the control unit controls the alarm unit to give an alarm and cuts off a gas supply electromagnetic valve of the gas water heater at the same time to wait for personnel to check and confirm, so that the use safety is improved.

Description

Technical Field

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[0001] The utility model relates to the field of water heaters, and particularly to a gas water heater with leakage detection. Background Art

[0002] At present, the gas water heaters sold on the market heat tap water through burning natural gas and internal heat exchange, providing hot water for users, which is convenient and fast. Natural gas is colorless and odorless. Once leaks occur at positions such as pipelines and joints, it is very difficult to detect in time, and it is easy to cause fires, posing potential safety hazards to users. The existing leakage detection devices are independent of gas water heaters. After detecting gas leakage, they can only give an alarm and cannot achieve the linkage control of gas water heaters. If users cannot close the gas inlet in time, there are still potential safety hazards. Content of the Utility Model

[0003] In order to improve the safety of using gas water heaters, this application provides a gas water heater with leakage detection.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows:

[0005] The gas water heater with leakage detection includes a water heater body, in which a control unit and a gas proportional valve connected to the control unit are provided. It further includes: a carbon monoxide concentration detection sensor, a gas concentration detection sensor and an alarm unit respectively connected to the control unit. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit controls the gas proportional valve to close and controls the alarm unit to give an alarm.

[0006] Further, the alarm unit adopts an audible and visual alarm.

[0007] Further, a display unit is also provided on the water heater body. The display unit is connected to the control unit. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit controls the display unit to display the corresponding alarm code characters.

[0008] Further, a transceiver is also provided on the water heater body. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit sends the detected information to an external mobile terminal to prompt the user.

[0009] The advantages of this invention compared to existing technologies are as follows: By integrating two sensors into the gas water heater, the gas water heater operates normally with good air circulation, ensuring no gas leakage, complete combustion, and carbon monoxide concentration within the standard range. In the event of an accident, such as a gas leak or incomplete combustion leading to excessive gas or carbon monoxide concentration, the sensors send feedback to the control unit. The control unit then activates the alarm unit to issue an alarm and simultaneously cuts off the gas supply solenoid valve of the water heater, awaiting inspection and confirmation by personnel, thus improving safety during use. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a gas water heater with leak detection.

[0011] Figure 2 This is a front view of a gas water heater with leak detection.

[0012] Figure 3 A schematic diagram of the main control board structure;

[0013] Attached reference numerals: 1 is the bottom shell, 2 is the fan, 3 is the heat exchanger, 4 is the combustion chamber, 5 is the burner, 6 is the water flow sensor, 7 is the gas proportional valve, 8 is the main control board, 9 is the air pressure switch, 10 is the display button, 11 is the panel, 12 is the flue, 801 is the carbon monoxide concentration detection sensor, 802 is the gas concentration detection sensor, and 803 is the speaker. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0015] like Figure 1 , Figure 2 As shown, a gas water heater with leak detection includes a water heater body, which specifically includes a bottom shell 1, a fan 2, a heat exchanger 3, a combustion chamber 4, a burner 5, a water flow sensor 6, a gas proportional valve 7, a main control board 8, a wind pressure switch 9, display buttons 10, a panel 11, and a flue 12. It also includes a carbon monoxide concentration detection sensor 801, a gas concentration detection sensor 802, and an alarm unit, all connected to the main control board 8. The alarm unit can be an audible and visual alarm; in this embodiment, a speaker 803 is used. The carbon monoxide concentration detection sensor 801, the gas concentration detection sensor 802, and the speaker 803 are all integrated on the main control board. Figure 3 As shown.

[0016] When the gas water heater is working normally, when the user turns on the hot water tap, tap water passes through the water flow sensor 6. The water flow sensor 6 detects the water flow signal and sends the signal back to the main control board 8. The main control board 8 calculates the water flow rate based on the signal and controls the fan 2 to start running. The air pressure switch 9 receives the signal and sends it back to the main control board 8. The main control board 8 sends an ignition signal to the burner 5 and simultaneously controls the gas proportional valve 7 to open. Gas enters the burner 5 through the gas proportional valve 7, and ignition is successful. The flame burns in the combustion chamber 4. The heat exchanger 3 absorbs heat above and conducts the heat to the water flow in the copper pipe through the copper fins of the heat exchanger, thus heating the tap water. The outflowing water is detected by the temperature sensor, which sends a temperature signal back to the main control board 8. Based on the signals from the water flow sensor 6 and the temperature sensor, the main control board 8 matches the temperature set by the user via the display button 10 and controls the opening of the gas proportional valve 7 accordingly to adjust the heat output of the burner 5 and the combustion chamber 4, achieving a constant temperature.

[0017] When the gas water heater does not burn completely, the carbon monoxide concentration in the combustion chamber 4 becomes too high. When it exceeds a certain ratio, the carbon monoxide concentration detection sensor 801 on the main control board 8 can detect carbon monoxide gas. When the carbon monoxide concentration detection sensor 801 detects that the carbon monoxide gas concentration exceeds the set safety value, it feeds back to the main control board 8. The main control board 8 controls the gas proportional valve 7 to cut off the gas supply, and at the same time supplies power to the speaker 803 to emit an alarm sound. The corresponding alarm code character is also displayed on the display panel 10. Specific display information can also be set according to the actual situation.

[0018] When a natural gas leak occurs outside or inside the gas water heater, a certain concentration of natural gas is detected by the gas concentration detection sensor 802 integrated on the main control board 8 as air circulates. After the gas concentration detection sensor 802 detects that the gas concentration exceeds the limit safety value, it feeds back to the main control board 8. The main control board 8 controls the gas proportional valve 7 to cut off the gas supply, and at the same time supplies power to the speaker 803 to emit an alarm sound and displays the corresponding fault code on the display panel 10 so that the user can promptly confirm and eliminate the safety hazard.

[0019] To promptly notify users, gas water heaters with leak detection are also equipped with transceivers. When the carbon monoxide concentration sensor or the gas concentration sensor detects the corresponding gas, the control unit sends the detected information to an external mobile terminal to alert the user.

Claims

1. A gas water heater with leak detection, comprising a water heater body, wherein a control unit and a gas proportional valve connected to the control unit are disposed within the water heater body, characterized in that, Also includes: The carbon monoxide concentration detection sensor, the gas concentration detection sensor, and the alarm unit are connected to the control unit respectively. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit controls the gas proportional valve to close and controls the alarm unit to issue an alarm.

2. The gas water heater with leak detection according to claim 1, characterized in that, The alarm unit uses an audible and visual alarm.

3. The gas water heater with leak detection according to claim 1, characterized in that, The water heater body is also equipped with a display unit, which is connected to the control unit. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit controls the display unit to display the corresponding alarm code character.

4. The gas water heater with leak detection according to any one of claims 1-3, characterized in that, The water heater itself is also equipped with a transceiver. When the carbon monoxide concentration detection sensor or the gas concentration detection sensor detects that the concentration of the corresponding gas exceeds the threshold, the control unit will send the detected information to an external mobile terminal to alert the user.

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