Intelligent controller of combustible gas exhaust device and exhaust system

Abstract

The utility model discloses an intelligent controller of combustible gas exhaust device and exhaust system, including PCB circuit board, PCB circuit board integrates timing control circuit and exhaust control circuit, the controller is equipped with power interface, fan interface, alarm interface and function button, fan interface is electrically connected with fan, alarm interface is electrically connected with the fan, and the function button is electrically connected with the alarm interface. The alarm interface is connected with an alarm, and the air exhaust control circuit comprises an accident air exhaust mode and / or a working air exhaust mode and / or a conventional air exhaust mode which is defaulted to be the conventional air exhaust mode. And when the controller receives an alarm signal of the alarm, the fan is controlled to enter an accident exhaust mode or the fan is controlled to enter a working exhaust mode through the functional key. The intelligent controller provided by the utility model can realize remote monitoring and automatic management, reduces manual intervention, can be linked with an explosion-proof fan and an alarm, can respond in milliseconds, timely processes leakage accumulation events, quickly reduces the concentration of combustible gas, reduces accident risks, and reduces labor cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to an intelligent controller of combustible gas exhaust device and exhaust system. BACKGROUND

[0002] Kitchen gas is a combustible gas providing heat source for cooking, and common types are natural gas and liquefied petroleum gas. When providing catering services, the catering industry generally needs to use gas stoves, and the use frequency is very high. Since gas is related to personnel and property safety, its use must strictly comply with safety specifications. In order to reduce the risk of fire caused by gas leakage, in the prior art, a gas leakage alarm is usually provided, which alarms and cuts off the gas valve when the corresponding gas leakage is monitored by the sensor. After the gas leaks, a fan needs to be turned on for ventilation to avoid the accumulation of kitchen gas and protect safety. It should be noted that the kitchen of the catering industry has a very high gas usage rate. The existing kitchen has the following disadvantages: 1. When the catering restaurant is working, a large amount of oil smoke and oil mist appears, and the entire kitchen is filled with oil smoke. After a period of time, the oil smoke accumulates, the mesh inlet of the probe is blocked, and the probe cannot capture the methane or other flammable gases contained in the air; 2. When the catering restaurant is working, a large amount of water vapor appears, and the temperature of the sensor of the probe decreases when the probe and the air are collected and exchanged, resulting in inaccurate detection of the methane concentration in the air. SUMMARY

[0003] In view of the above shortcomings, the purpose of the present utility model is to provide an intelligent controller of combustible gas exhaust device and exhaust system.

[0004] To this end, the intelligent controller of combustible gas exhaust device of the utility model, including PCB circuit board, the PCB circuit board integrates timing control circuit and exhaust control circuit, the controller is equipped with power interface, fan interface, alarm interface and function button, the fan interface is electrically connected with the fan, the alarm interface is connected with the alarm, the exhaust control circuit includes accident exhaust mode and / or working exhaust mode and / or conventional exhaust mode, and the default is conventional exhaust mode. When the controller receives the alarm signal of the alarm, the fan enters the accident exhaust mode, and the fan enters the working exhaust mode through the function button.

[0005] Further, the controller includes a cover, an intermediate PCB board, a main PCB board, a heat dissipation bottom plate and a bottom shell, the cover, the intermediate PCB board, the main PCB board, the heat dissipation bottom plate and the bottom shell are detachably fixed, the intermediate PCB board is integrated with a time counter, a function button and an indicator light, and the intermediate PCB board is plugged with the main PCB board.

[0006] Further, the face cover body is opaque, and the face cover is provided with a pressing area, a display area and an indicator light area. The periphery of the pressing area, the display area and the indicator light area are provided with transparent panels so that the light can pass through the face cover, and the display area can display time.

[0007] Further, three time counters are arranged side by side on the upper part of the middle PCB, and the positions of the counters correspond to the display area. Three indicator lights, namely a power indicator light, an operation indicator light and an alarm indicator light, are arranged below the counters and correspond to the indicator light area. Two function keys, namely a working exhaust function key and a direct exhaust function key, are arranged side by side on the middle and lower parts of the middle PCB, and the function keys correspond to the pressing area. The function keys can be operated by pressing the pressing area on the face cover.

[0008] Further, the middle PCB is further provided with function key indicator lights, which can display the corresponding states through the transparent panels around the pressing area.

[0009] Further, three adjustment keys are arranged side by side on the middle PCB, and the adjustment keys are arranged in the area between the function keys and the power indicator light, the operation indicator light and the alarm indicator light. The adjustment keys include a setting key and increase and decrease keys. The adjustment keys are hidden below the face cover, and the adjustment keys can be operated after the face cover is opened.

[0010] Further, the middle PCB is provided with needle pins, and the main PCB is provided with corresponding sockets for plugging. The main PCB is provided with a plurality of mounting holes, and the heat dissipation base is provided with upwardly protruding columns corresponding to the mounting holes. The main PCB is suspended and fixed on the columns of the base by bolts. The base is provided with a plurality of heat dissipation holes.

[0011] Further, the bottom shell is provided with an inward column, and the inward column is provided with a groove. The bottom shell and the base are fixed by bolts, and the base and the rear plate of the bottom shell maintain a predetermined distance. The rear plate is provided with a plurality of holes. The side wall of the bottom shell extends upwardly above the main PCB to form a mounting position. The mounting position includes a bottom surface and a side baffle. The side baffle is provided with a clamping strip. The bottom surface of the middle PCB is arranged in the mounting position. The middle PCB is provided with a clamping opening corresponding to the clamping strip. The clamping strip and the clamping opening cooperate to limit the PCB in the mounting position. The face cover is connected to the bottom shell by a clamping buckle.

[0012] Further, the device comprises a smart controller, an explosion-proof fan and a combustible gas leakage alarm. The wires of the explosion-proof fan and the alarm are connected to the fan interface and the alarm interface of the smart controller. The alarm is provided with a gas safety valve and a gas monitoring sensor. When the gas monitoring sensor detects a leakage of combustible gas, the alarm cuts off the gas safety valve and alarms. When the smart controller receives the leakage signal of the alarm, the explosion-proof fan operates in an accident exhaust mode.

[0013] Further, the explosion-proof fan is an intelligent speed-regulating explosion-proof fan, two or more coils are arranged in the explosion-proof fan, the fan power is adjusted through the coils, the power of the explosion-proof fan is greater than that in a normal exhaust mode when being in an accident exhaust mode and a working exhaust mode, and the fan is in a low-noise state when the explosion-proof fan is in the normal exhaust mode.

[0014] The utility model discloses the beneficial technical effects:

[0015] The intelligent controller of the utility model, three kinds of working modes are preset when leaving factory, accident exhaust mode, exhaust ventilation 12 times per hour, working exhaust mode, exhaust ventilation 6 times per hour, normal exhaust mode, exhaust 3 times per hour, and the exhaust time of each time is 1-5 minutes, and accident exhaust mode is linked through alarm, and manual intervention is not needed, and normal exhaust mode is the exhaust mode of system default, and manual intervention is not needed, and even in the non-gas use time, also maintain exhaust 3 times per hour, can effectively reduce gas accumulation, guarantee safety, and working exhaust mode is realized through function button.

[0016] The intelligent controller of the utility model and alarm, explosion-proof fan form exhaust system, and the power of explosion-proof fan can be set, for example, double coil is adopted, and when being in accident exhaust mode, high-power exhaust is adopted, and normal exhaust, namely, when not working, small-power exhaust is adopted, reduces exhaust noise, prevents night disturbance. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is alarm schematic diagram of the utility model;

[0018] Figure 2 It is face cover schematic diagram of intelligent controller;

[0019] Figure 3 It is intermediate PCB schematic diagram;

[0020] Figure 4 It is installation position and main PCB schematic diagram;

[0021] Figure 5 It is bottom plate elevation schematic diagram;

[0022] Figure 6 It is back plate elevation schematic diagram;

[0023] Figure 7 It is explosion-proof fan schematic diagram;

[0024] Figure 8 is a circuit schematic diagram.

[0025] The reference signs are as follows: 1, explosion-proof fan; 2, alarm; 3, intelligent controller; 4, power interface; 5, fan interface; 6, alarm interface; 7, middle PCB board; 8, main PCB board; 9, face cover; 10, heat dissipation bottom plate; 11, bottom shell; 12, display area; 13, indicator light area; 14, pressing area; 15, working exhaust function button; 16, straight exhaust function button; 17, adjusting button; 18, pin-shaped pin; 19, socket; 20, inward column; 21, clamping strip; 22, back plate; 23, mounting position. DETAILED DESCRIPTION

[0026] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the following will be described in detail according to the specific implementation mode, structure, features and effects of the utility model in combination with the preferred embodiments and the drawings.

[0027] Referring to Figures 2 to 6 and Figure 8 , the intelligent controller 3 of the combustible gas exhaust device of the utility model comprises a PCB circuit board, the PCB circuit board integrates a timing control circuit and an exhaust control circuit, the controller is provided with a power interface 4, a fan interface 5, an alarm interface and a function button, the fan interface 5 is electrically connected with a fan, the alarm interface 6 is connected with an alarm 2, the exhaust control circuit comprises an accident exhaust mode and / or a working exhaust mode and / or a conventional exhaust mode, the conventional exhaust mode is the default mode, when the controller receives an alarm signal of the alarm 2, the fan enters the accident exhaust mode, and the fan enters the working exhaust mode through the function button. In the embodiment, the PCB circuit board comprises a middle PCB board 7 and a main PCB board 8, the controller comprises a face cover 9, the middle PCB board 7, the main PCB board 8, a heat dissipation bottom plate 10 and a bottom shell 11, the face cover 9, the middle PCB board 7, the main PCB board 8, the heat dissipation bottom plate 10 and the bottom shell 11 are detachably fixed, a time counter, a function button and an indicator light are integrated on the middle PCB board 7, and the middle PCB board 7 is inserted with the main PCB board 8. In the embodiment, the accident exhaust mode is 12 times of exhaust ventilation per hour, the working exhaust mode is 6 times of exhaust ventilation per hour, and the conventional exhaust mode is 3 times of exhaust ventilation per hour, and the exhaust time is 1-5 minutes each time. The default exhaust time is 3 minutes when leaving the factory.

[0028] Referring to Figure 2As shown, the face cover 9 is opaque, and the face cover 9 can be made of transparent plastic material, and the face cover 9 is coated with opaque paint to form a transparent panel, so that the light can pass through the face cover 9.

[0029] Referring to Figure 3 As shown, the face cover 9 is opaque, and the face cover 9 can be made of transparent plastic material, and the face cover 9 is coated with opaque paint to form a transparent panel, so that the light can pass through the face cover 9.

[0030] The middle PCB board 7 is provided with three indicator lights below the counters, which are respectively a power indicator light, a running indicator light and an alarm indicator light, and are LED lights. The power indicator light and the running indicator light are generally green, which are used to indicate whether the power is on and whether the fan is running. The alarm indicator light is generally red, which displays the alarm signal from the alarm 2. The indicator light area 13 on the panel corresponds to the positions of the indicator lights. The middle PCB board 7 is provided with two rectangular function buttons in the middle and lower parts, which are respectively a working exhaust function button 15 and a direct exhaust function button 16. The function buttons correspond to the pressing areas 14 on the face cover 9, and the function buttons can be actuated by pressing the pressing areas 14 on the face cover 9. The middle PCB board 7 is also provided with function button indicator lights, which can display the corresponding states through the transparent panel around the pressing areas 14. In this embodiment, the white light around the working exhaust function button 15 is the default normal exhaust mode, and the blue light is entered into the working exhaust mode after clicking or pressing the function button. The white light is entered into the normal working mode after clicking or pressing the function button again. The direct exhaust function button 16 is clicked or pressed to perform fan direct exhaust, which is a manual exhaust mode, and does not enter the working exhaust mode and the normal exhaust mode.

[0031] The intermediate PCB 7 is further provided with three adjusting buttons 17 arranged side by side, the adjusting buttons 17 are arranged in the area between the function buttons and the power indicator, the operation indicator and the alarm indicator, the adjusting buttons 17 include a setting button and increase and decrease buttons, the adjusting buttons 17 are hidden below the face cover 9, and the adjusting buttons 17 can be operated after the face cover 9 is opened. The adjusting buttons 17 are used for adjusting the working time of the fan, and the default is 3 minutes when leaving the factory. The adjusting operation is as follows: first, press the setting button to enter the adjusting mode, and then press the increase and decrease buttons to increase or decrease the working time of each fan start, and the adjusting range is 1-5 minutes.

[0032] Referring to Figs. 1-3, Figure 3 , Figure 4 and Figure 5 , the intermediate PCB 7 is provided with an 8-pin pin plug 18. Since Figure 3 is a top view, Figure 3 the pin plug 18 is actually arranged on the other side, and in the figure, only the connection with the PCB is shown. The main PCB 8 is provided with a corresponding socket 19 for plug-in connection. The main PCB 8 is provided with a plurality of mounting holes. The heat dissipation bottom plate 10 is provided with a protruding column protruding upward. The protruding column corresponds to the mounting hole. The main PCB 8 is suspended and fixed on the protruding column of the bottom plate by bolts. The heat dissipation bottom plate 10 is provided with a plurality of heat dissipation holes.

[0033] Referring to Fig. 4, Figure 6 the bottom shell 11 is provided with a recessed column 20. The recessed column 20 is provided with a slot. The bolts pass through the slot in the recessed column 20 to fix the bottom shell 11 and the heat dissipation bottom plate 10, and to maintain a predetermined distance between the heat dissipation bottom plate 10 and the rear plate 22 of the bottom shell 11. The rear plate 22 is provided with a plurality of holes, including holes for heat dissipation and holes for wiring.

[0034] Referring to Fig. 5, Figure 4 the side wall of the bottom shell 11 extends upward above the main PCB 8 to form a mounting position 23. The mounting position 23 includes a bottom surface and a side baffle. The side baffle is provided with a clamping strip 21. The peripheral area of the bottom surface of the intermediate PCB 7 is placed on the mounting position 23. The intermediate PCB 7 is correspondingly provided with a clamping opening. The clamping strip 21 cooperates with the clamping opening to limit the PCB on the mounting position 23. The face cover 9 is connected with the bottom shell 11 by clamping.

[0035] The utility model discloses a kind of combustible gas intelligent linkage exhaust systems, mainly used in industry production, chemical industry, gas, commercial catering, hotel, steel and other industries, guarantee production safety. Referring to Figure 1 and Figure 7As shown, the system comprises the above-mentioned intelligent controller 3, the explosion-proof fan 1 and the combustible gas leakage alarm 2. The wires of the explosion-proof fan 1 and the alarm 2 are connected to the fan interface 5 and the alarm interface 6 of the intelligent controller 3. The alarm 2 is provided with a gas safety valve and a gas monitoring sensor. When the gas monitoring sensor detects a leakage of combustible gas, the alarm 2 cuts off the gas safety valve and alarms. When the intelligent controller 3 receives the leakage signal of the alarm 2, the explosion-proof fan 1 is controlled to operate in the accident exhaust mode. The explosion-proof fan 1 is an intelligent speed-regulating explosion-proof fan. Two or more coils are arranged in the explosion-proof fan 1 to adjust the power of the fan. When the explosion-proof fan 1 is in the accident exhaust mode and the working exhaust mode, the power of the explosion-proof fan 1 is greater than that in the conventional exhaust mode. When the explosion-proof fan 1 is in the conventional exhaust mode, the fan is in a low-noise state. Of course, the power and speed of the fan can be adjusted by a mechanical method in this embodiment, such as adjusting the resistance of multiple coils. The power and speed of the fan can also be adjusted by other existing methods, such as electronic component speed regulation, silicon-controlled voltage regulation, frequency conversion speed regulation and other technologies.

Claims

1. An intelligent controller for a combustible gas exhaust device, characterized in that: The controller comprises a PCB circuit board, a time control circuit and an exhaust control circuit are integrated in the PCB circuit board, the controller is provided with a power supply interface, a fan interface, an alarm interface and function buttons, the fan interface is electrically connected with a fan, the alarm interface is connected with an alarm, the exhaust control circuit comprises an accident exhaust mode and / or a working exhaust mode and / or a normal exhaust mode, the normal exhaust mode is the default mode, when the controller receives an alarm signal from the alarm, the fan enters the accident exhaust mode, and the fan enters the working exhaust mode through the function buttons.

2. The intelligent controller of claim 1, wherein: The controller comprises a face cover, an intermediate PCB board, a main PCB board, a heat dissipation bottom plate and a bottom shell, the face cover, the intermediate PCB board, the main PCB board, the heat dissipation bottom plate and the bottom shell are detachably fixed, a time counter, function buttons and indicator lights are integrated on the intermediate PCB board, and the intermediate PCB board is plugged with the main PCB board.

3. The intelligent controller of claim 2, wherein: The face cover body is opaque, a pressing area, a display area and an indicator light area are arranged on the face cover, a transparent panel is arranged around the pressing area, the display area and the indicator light area, so that the light can pass through the face cover, and the display area can display time.

4. The intelligent controller of claim 3, wherein: Three time counters are arranged side by side on the upper part of the intermediate PCB board, and the positions of the counters correspond to the display area; three indicator lights are arranged below the counters, which are a power supply indicator light, a running indicator light and an alarm indicator light, and correspond to the indicator light area; two function buttons are arranged side by side in the middle and lower parts of the intermediate PCB board, which are a working exhaust function button and a direct exhaust function button, and the function buttons correspond to the pressing area, and the function buttons can be operated by pressing the pressing area on the face cover.

5. The intelligent controller of claim 4, wherein: A function button indicator light is further arranged on the intermediate PCB board, and the function button indicator light can display the corresponding state through the transparent panel around the pressing area.

6. The intelligent controller of a combustible gas exhaust device according to claim 3 or 4, characterized in that: Three adjustment buttons are further arranged side by side on the intermediate PCB board, the adjustment buttons are arranged in the area between the function buttons and the power supply indicator light, the running indicator light and the alarm indicator light, the adjustment buttons comprise a setting button and increase and decrease buttons, the adjustment buttons are hidden below the face cover, and the adjustment buttons are operated after the face cover is opened.

7. The intelligent controller of a combustible gas exhaust device according to claim 3 or 4, characterized in that: A needle pin is arranged on the intermediate PCB board, a corresponding socket is arranged on the main PCB board for plugging, a plurality of mounting holes are arranged on the main PCB board, a protruding column protruding upward is arranged on the heat dissipation bottom plate, the protruding column corresponds to the mounting hole, the main PCB board is suspended and fixed on the protruding column of the bottom plate by bolts, and a plurality of heat dissipation holes are arranged on the bottom plate.

8. The intelligent controller of claim 7, wherein: The bottom shell is provided with an inward protruding column, a groove is arranged in the inward protruding column, the bottom shell is fixed with the bottom plate by the bolts, and the bottom plate and the rear plate of the bottom shell maintain a predetermined distance, a plurality of holes are arranged on the rear plate, a side wall of the bottom shell extends upward to above the main PCB board to form a mounting position, the mounting position comprises a bottom surface and a side baffle, a clamping strip is arranged on the side baffle, a periphery area of the bottom surface of the intermediate PCB board is arranged on the mounting position, the intermediate PCB board is provided with a clamping opening corresponding to the clamping strip, the clamping strip and the clamping opening cooperate to limit the PCB board in the mounting position, and the face cover is buckled with the bottom shell.

9. An intelligent linkage exhaust system for combustible gas, characterized in that: Intelligent controller, explosion-proof fan and combustible gas leakage alarm are included, the wires of the explosion-proof fan and the alarm are connected to the fan interface and the alarm interface of the intelligent controller, the alarm is provided with a gas safety valve and a gas monitoring sensor, when the gas monitoring sensor detects leaked gas, the alarm cuts off the gas safety valve and alarms, when the intelligent controller receives the alarm signal of the alarm, the explosion-proof fan operates according to the accident exhaust mode.

10. The intelligent flammable gas linkage exhaust system of claim 9, wherein: The explosion-proof fan is an intelligent speed-regulating explosion-proof fan, two or more coils are arranged in the explosion-proof fan, the fan power is adjusted through the coils, when being in the accident exhaust mode and the working exhaust mode, the power of the explosion-proof fan is greater than that in the conventional exhaust mode, when the explosion-proof fan is in the conventional exhaust mode, the fan is in a low-noise state.

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