Gas appliance detection device and gas oven

Abstract

The utility model belongs to the technical field of gas appliances, and relates to a gas appliance detection device and a gas oven. The gas appliance detection device comprises a combustor. The fuel gas pipeline is used for providing fuel gas for the combustor; the gas valve is used for controlling connection and disconnection of a gas pipeline; the controller is used for controlling opening and closing of the gas valve; the detection sensor is used for detecting the concentration of CO generated by combustion of the combustor and transmitting a signal to the controller; the fan is used for dissipating heat and discharging CO generated by combustion of the combustor; wherein the detection sensor, the gas valve and the fan are electrically connected with the controller, and when the CO concentration reaches a preset value, the controller controls the gas valve to be closed and controls the fan to work. The detection sensor and the controller are arranged, the detection sensor can transmit a detected CO concentration signal to the controller, and once the CO concentration signal reaches a preset value, the controller can directly control the gas valve to be closed to stop gas inlet and simultaneously control the fan to work to accelerate discharge of CO so as to reduce the CO concentration.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas appliances and relates to a gas appliance detection device and a gas oven. Background Art

[0002] Gas appliances refer to appliances that use gas as fuel and generate heat for transfer through combustion, such as gas ovens, gas cookers, gas integrated stoves, etc. At present, most household gas is natural gas, which is prone to produce CO (carbon monoxide) gas when it is not completely burned. CO gas is very harmful to the human body. Its binding force with hemoglobin in the human body is greater than that with oxygen, which can easily cause hypoxia in human tissues, causing suffocation, and in severe cases, causing internal bleeding, edema and necrosis. However, due to the characteristics of carbon monoxide, it is difficult for people to perceive its presence. When symptoms such as dizziness and nausea occur after poisoning, even if they can realize that it is carbon monoxide poisoning, they often have lost the ability to control their actions and cannot open windows for ventilation or call for help. Existing gas appliances lack CO detection function, and cannot measure CO and make corresponding feedback in time, so there are certain safety hazards. Summary of the invention

[0003] The utility model provides a gas appliance detection device and a gas oven. By adding a detection sensor for detecting CO concentration, the CO concentration generated when the gas appliance is working can be monitored in real time, and the fan can be started by a controller to discharge CO in time.

[0004] The utility model adopts the following technical solutions:

[0005] The utility model provides a gas appliance detection device, which has the following technical features: a burner; a gas pipeline for providing gas to the burner; a gas valve for controlling the on-off of the gas pipeline; a controller for controlling the opening and closing of the gas valve; a detection sensor for detecting the CO concentration generated by the burner combustion and transmitting a signal to the controller; and a fan for dissipating heat and exhausting the CO generated by the burner combustion; wherein the detection sensor, the gas valve and the fan are electrically connected to the controller respectively, and when the CO concentration reaches a preset value, the controller will control the gas valve to close and control the fan to work.

[0006] The gas appliance detection device provided by the utility model may also have such technical features: wherein, the controller has: a display screen, which displays the CO concentration; a relay; and a control chip, which is electrically connected to the relay and is used to control the on and off of the relay; the gas valve has a gas stopcock valve electrically connected to the relay, and the control chip controls the relay to be disconnected to close the gas stopcock valve.

[0007] The gas appliance detection device provided by the utility model may also have the following technical features: wherein the detection sensor comprises: a detection module for detecting CO concentration; a transmission module for transmitting the CO concentration to a controller and displaying it on a display screen by the controller; and an alarm module for sounding an alarm when the CO concentration reaches a preset value.

[0008] The gas appliance detection device provided by the utility model may also have the following technical features: wherein a thermocouple is arranged on the burner, and the relay is connected in series with the detection circuit of the thermocouple.

[0009] The utility model also proposes a gas oven, which has the following technical features: it comprises a box body and a detection device installed on the box body, wherein the detection device is the gas appliance detection device as described above.

[0010] The gas oven provided by the utility model may also have the following technical features: wherein the box body comprises: an outer shell, comprising a top plate and side plates, an inner tank, which is installed inside the outer shell, an installation cavity is provided between the top of the inner tank and the top plate, and the fan is provided in the installation cavity; a connecting plate is provided between the inner tank and the side plates, a smoke exhaust port leading to the installation cavity is provided on the connecting plate, and a detection sensor is installed on one side of the connecting plate located at the smoke exhaust port.

[0011] The gas oven provided by the utility model may also have the following technical features: wherein the detection sensor comprises: a mounting base fixed on the inner wall of the side panel, a detection head embedded in the connecting plate, and a positioning hole for positioning the detection head is provided on one side of the connecting plate located at the smoke exhaust port.

[0012] The gas oven provided by the utility model may also have the following technical features: wherein a panel assembly is arranged on the front side of the installation cavity above the smoke exhaust port, and the panel assembly comprises: a panel bracket fixed on the side panel; a control panel fixed on the panel bracket; and a switch knob installed on the control panel, and a gas valve is connected to its inner end, and the gas valve is installed in the installation cavity; a controller is installed in the middle of the panel bracket, and a visual window is arranged in the middle of the control panel corresponding to the controller.

[0013] The gas oven provided by the utility model may also have such technical features: wherein, the side panel comprises a first side panel and a second side panel respectively fixed on both sides of the top panel, the front sides of the first side panel and the second side panel are respectively fixed with fixing strips, and the two ends of the panel bracket are respectively fixed on the fixing strips located on the front sides of the first side panel and the second side panel.

[0014] The gas oven provided by the utility model may also have such technical features: wherein the burner comprises an upper burner and a lower burner, an upper thermocouple and a lower thermocouple are respectively provided on the upper burner and the lower burner, and the upper burner and the lower burner are respectively installed on the top and the bottom of the inner tank.

[0015] Function and effect of utility model

[0016] According to the gas appliance detection device and the gas oven of the utility model, since a detection sensor and a controller are provided, the detection sensor will transmit the detected CO concentration signal to the controller. Once the CO concentration signal reaches a preset value, the controller will directly control the gas valve to close and stop the air intake and at the same time control the fan to work to accelerate the discharge of CO, thereby reducing the CO concentration and ensuring personal safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a gas oven of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of the structure of the gas oven shell.

[0019] Figure 3 It is a schematic diagram of the structure of the gas oven of the utility model after the outer shell is hidden.

[0020] Figure 4 It is a schematic diagram of the utility model in which the box body hides the right side plate.

[0021] Figure 5 yes Figure 4 Schematic diagram of the structure after hiding the inner tank.

[0022] Figure 6 It is a schematic diagram of the control route of the detection device of the utility model.

[0023] Figure 7 It is a schematic diagram of the installation of the detection sensor of the utility model.

[0024] Figure 8 It is a schematic diagram of the installation structure of the panel assembly of the utility model.

[0025] Figure numerals: gas oven 100, box body 10, detection device 20, upper burner 21a, lower burner 21b, gas pipeline 22, air inlet pipe 221, air outlet pipe 222, gas valve 23, controller 24, display screen 241, detection sensor 25, mounting base 251, detection head 252, fan 26, thermocouple 27, connecting plate 28, smoke exhaust port 29, outer shell 30, top plate 31, rear plate 32, bottom plate 33, left side plate 34, right side plate 35, fixing strip 36, inner tank 40, mounting cavity 41, door panel 50, panel assembly 60, panel bracket 61, control panel 62, switch knob 63. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the gas appliance detection device and the gas oven of the utility model are specifically described below in combination with the embodiments and drawings.

[0027] <Example 1>

[0028] Figure 1 It is a structural diagram of a gas oven of the utility model.

[0029] This embodiment provides a gas oven 100 with a gas appliance detection device, including a housing 10 and a detection device 20. The detection device 20 is installed on the housing 10 to detect the CO concentration generated by the combustion of gas in the gas oven 100 during operation, and to control the fan to accelerate the discharge of CO.

[0030] Figure 2 The utility model is a schematic diagram of the structure of the gas oven shell.

[0031] like Figure 1 As shown, the box body 10 has an outer shell 30, an inner shell 40 and a door panel 50. Figure 2 As shown, the housing 30 is composed of a top plate 31, side plates, a rear plate 32 and a bottom plate 33, wherein the side plates include a left plate 34 and a right plate 35, and a door plate 50 is provided at the front side of the housing 30. The inner tank 40 is installed inside the housing 30 in a square shape with an open front side.

[0032] Figure 3 It is a schematic diagram of the structure of the gas oven of the utility model after the outer shell is hidden.

[0033] like Figure 2 As shown, the detection device 20 has a burner, a gas pipeline 22, a gas valve 23, a controller 24, a detection sensor 25 and a fan 26. The gas pipeline 22 is connected to the external gas source and the burner to provide gas to the burner. A thermocouple 27 is arranged near the burner to detect the temperature of the burner. The gas valve 23 is arranged on the gas pipeline 22 to control the on and off of the gas pipeline 22.

[0034] Figure 4 It is a schematic diagram of the utility model in which the box body hides the right side plate.

[0035] like Figure 4 As shown, a mounting cavity 41 is provided between the top of the inner tank 40 and the top plate 31, and the fan 26 is provided in the mounting cavity 41. Figure 1 and Figure 2As shown, a connecting plate 28 is provided between the front opening of the inner tank 40 and the side plate, a smoke exhaust port 29 leading to the installation cavity 41 is provided on the connecting plate 28, and a detection sensor 25 is installed on one side of the smoke exhaust port 29 of the connecting plate 28. The detection sensor 25 is arranged near the smoke exhaust port 29, so that the detection sensor 25 can detect CO more accurately.

[0036] Figure 5 yes Figure 4 Schematic diagram of the structure after hiding the inner tank.

[0037] like Figure 5 As shown, the burner has an upper burner 21a arranged at the top of the inner tank 40 and a lower burner 21b arranged at the bottom of the inner tank 40. A thermocouple 27 is arranged near the burner, and the upper thermocouple corresponds to the upper burner 21a, and the lower thermocouple corresponds to the lower burner 21b, which is used to detect the temperature of the burner. The gas pipeline 22 is connected to the external gas source and the upper burner 21a and the lower burner 21b, and supplies gas to the upper burner 21a and the lower burner 21b. The gas pipeline 22 has an air inlet pipe 221 connected to the external gas source and an air outlet pipe 222 connected to the burner. A gas valve 23 is arranged between the air inlet pipe 221 and the air outlet pipe 222. In this embodiment, the gas valve 23 uses a gas cock valve (it can also be a temperature control valve in practice). The gas cock valve is provided with a solenoid valve, which can be opened and closed under the control of the controller 24, thereby realizing the on-off of the gas pipeline 22.

[0038] Figure 6 It is a schematic diagram of the control route of the detection device of the utility model.

[0039] like Figure 6 As shown, the detection sensor 25, the gas valve 23, the fan 26, and the thermocouple 27 are electrically connected to the controller 24, respectively. The detection sensor 25 is used to detect the CO concentration generated by the burner combustion and transmit a signal to the controller 24. The controller 24 receives the signal transmitted from the detection sensor 25 and controls the opening and closing of the gas valve 23 and the operation of the fan 26. The controller 24 has a preset value for the CO concentration in advance, such as 500ppm. When the CO concentration reaches 500ppm, the controller 24 will control the gas valve 23 to close and cut off the gas source, and control the fan 26 to start. After the fan 26 is started, on the one hand, it can dissipate heat from the box 10, and on the other hand, it can accelerate the discharge of CO generated by the burner combustion.

[0040] The controller 24 has a display screen 241, a relay and a control chip. The CO concentration can be displayed in real time on the display screen. The control chip is electrically connected to the relay and is used to control the on and off of the relay. The gas valve is a gas stopcock valve or a temperature control valve electrically connected to the relay, and the relay is connected in series with the detection circuit of the thermocouple 27. The control chip controls the relay to be disconnected to close the gas stopcock valve or the temperature control valve to stop working.

[0041] Figure 7 It is a schematic diagram of the installation of the detection sensor of the utility model.

[0042] like Figure 7 As shown, the left side of the connecting plate 28 is bent to form a fixed flange 281, which is fixed to the left side plate 34 by screws. The detection sensor 25 has a mounting seat 251 and a detection head 252. The mounting seat 251 is located at the tail of the detection head 252 and is fixed to the inner wall of the left side plate 34. The connecting plate 28 is located at one side of the smoke exhaust port 29 and is provided with a positioning hole for positioning the detection head 252. The front end of the detection head 252 is embedded in the positioning hole. The detection sensor 25 has a detection module, a transmission module and an alarm module. The detection module is used to detect the CO concentration. The transmission module is used to transmit the CO concentration detected by the detection module to the controller 24 and the controller 24 displays it on the display screen 241. The alarm module is an alarm bell, which is used to send an alarm to inform the user (such as ringing a bell) when the CO concentration reaches a preset value. In this embodiment, the detection sensor 25 measures CO based on the principle that carbon monoxide and oxygen undergo corresponding redox reactions on the working electrode and the counter electrode and release charges to form current. The magnitude of the generated current is proportional to the carbon monoxide concentration and follows Faraday's law. The carbon monoxide concentration can be determined by measuring the magnitude of the current.

[0043] Figure 8 It is a schematic diagram of the installation structure of the panel assembly of the utility model.

[0044] like Figure 4 As shown, a panel assembly 60 is provided on the front side of the installation cavity 41 above the smoke exhaust port 29. Figure 8 The panel assembly 60 comprises a panel bracket 61, a control panel 62 and a switch knob 63. The panel bracket 61 is fixed on the side panel. The control panel 62 is a glass panel fixed on the front side of the panel bracket 61. The switch knob 63 is rotatably mounted on the control panel 62, and its inner end is connected to the gas valve 23. The gas valve 23 is mounted in the mounting cavity 41. The gas valve 23 is manually opened by rotating the switch knob 63. The controller 24 is mounted in the middle of the panel bracket 61, and a visual window is provided in the middle of the control panel 62 corresponding to the display screen 241 of the controller 24.

[0045] like Figure 8As shown, the side panel comprises a first side panel (i.e., a left side panel 34) and a second side panel (i.e., a right side panel 35) respectively fixed on both sides of the top panel 31, and the front sides of the first side panel and the second side panel are respectively fixed with fixing strips 36, and the two ends of the panel bracket 61 are respectively fixed on the fixing strips 36 located on the front sides of the first side panel and the second side panel.

[0046] Embodiment Function and effect:

[0047] 1. In this embodiment, a detection sensor 25 for detecting CO concentration is installed near the smoke exhaust port 29 on the box body 10. When the product is working, the CO concentration can be detected in real time, and the CO concentration can be checked at any time on the display screen 241 of the controller 24.

[0048] 2. The detection sensor 25 releases electric charge to form current through corresponding redox reaction of carbon monoxide and oxygen on the working electrode and the counter electrode. The magnitude of the generated current is proportional to the concentration of carbon monoxide and follows Faraday's law. The concentration of carbon monoxide can be determined by measuring the magnitude of the current.

[0049] 3. The relay on the controller 24 is connected in series to the thermocouple 27 detection circuit. The chip controls the relay to disconnect so that the solenoid valve in the gas cock is closed, thereby stopping the operation.

[0050] 4. The detection sensor 25 detects the CO concentration in real time. When the concentration reaches a preset value, a prompt sound is issued and all solenoid valves are controlled to close.

[0051] 5. When the CO concentration reaches a preset value, the controller 24 can control the cooling fan to operate, accelerate the discharge of CO, and reduce the CO concentration.

[0052] The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention. For example, the above embodiments specifically describe the gas appliance detection device using a gas oven as an example. In actual situations, it can also be used on other gas appliances such as gas cookers and integrated stoves.

Claims

1. A gas appliance detection device, characterized in that: include: Burner; A gas pipeline for providing gas to the burner; A gas valve, used to control the on-off of the gas pipeline; A controller, used for controlling the opening and closing of the gas valve; A detection sensor, used to detect the CO concentration generated by the burner and transmit a signal to the controller; as well as A fan, used to dissipate heat and exhaust CO generated by the burner; The detection sensor, the gas valve and the fan are electrically connected to the controller respectively. When the CO concentration reaches a preset value, the controller will control the gas valve to close and control the fan to work.

2. The gas appliance detection device according to claim 1, characterized in that: in, The controller has: A display screen, displaying the CO concentration; Relays; and A control chip, electrically connected to the relay and used to control the on and off of the relay; The gas valve is a gas cock valve or a temperature control valve electrically connected to the relay, and the control chip controls the relay to be disconnected to close the gas cock valve or the temperature control valve.

3. The gas appliance detection device according to claim 2, Features: in, The detection sensor has: A detection module, used for detecting the CO concentration; A transmission module, used for transmitting the CO concentration to the controller and having the controller display it on the display screen; as well as The alarm module is used to issue an alarm when the CO concentration reaches a preset value.

4. The gas appliance detection device according to claim 2, characterized in that: in, The burner is provided with a thermocouple, and the relay is connected in series with a detection circuit of the thermocouple.

5. A gas oven, characterized in that: include: Box, A detection device is installed on the box. Wherein, the detection device is a gas appliance detection device as described in any one of claims 1-4.

6. The gas oven according to claim 5, characterized in that: in, The box has: The housing, including the top and side panels, An inner tank is installed inside the outer shell, An installation cavity is provided between the top of the inner tank and the top plate, and the fan is arranged in the installation cavity; a connecting plate is provided between the inner tank and the side plate, and a smoke exhaust port leading to the installation cavity is opened on the connecting plate, and the detection sensor is installed on one side of the smoke exhaust port.

7. The gas oven according to claim 6, characterized in that: in, The detection sensor has: A mounting seat is fixed on the inner wall of the side plate, The detection head is embedded in the connecting plate. The connection plate is provided with a positioning hole on one side of the smoke exhaust port for positioning the detection head.

8. The gas oven according to claim 6, Features: in, A panel assembly is arranged on the front side of the installation cavity above the smoke exhaust port, and the panel assembly comprises: a panel bracket, fixed to the side panel; A control panel, fixed on the panel bracket; as well as a switch knob, mounted on the control panel, and having an inner end connected to the gas valve, wherein the gas valve is mounted in the mounting cavity; The controller is installed in the middle of the panel bracket, and a visual window is arranged in the middle of the control panel corresponding to the controller.

9. The gas oven according to claim 8, characterized in that: in, The side panel comprises a first side panel and a second side panel respectively fixed on both sides of the top panel, the front sides of the first side panel and the second side panel are respectively fixed with fixing strips, and the two ends of the panel bracket are respectively fixed on the fixing strips located on the front sides of the first side panel and the second side panel.

10. The gas oven according to any one of claims 6 to 9, characterized in that: in, The burner comprises an upper burner and a lower burner, an upper thermocouple and a lower thermocouple are respectively arranged on the upper burner and the lower burner, and the upper burner and the lower burner are respectively installed on the top and the bottom of the inner container.

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