WO2008019520A1

WO2008019520A1 - An automatic control gas fireplace

Info

Publication number: WO2008019520A1
Application number: PCT/CN2006/001694
Authority: WO
Inventors: Xuekai Yang
Original assignee: Xuekai Yang
Priority date: 2006-07-17
Filing date: 2006-07-17
Publication date: 2008-02-21

Abstract

An automatic control gas fireplace is disclosed. It includes a housing (01), a fire box (02) in the housing (01), a burner (18) in the fire box (02), an ignition pin (13) and a detect pin (11) on the burner (18), a gas valve (17) connected to the burner (18), an autocontrol system on the housing (01). The autocontrol system includes a computer panel (15) with control chips (151), a display (11) and a control panel (16) respectively connected with the computer panel, a temperature sensor (14) as well as a remote control (19) associated with the computer panel (15). The computer panel (15) is connected with the ignition pin (13), the detect pin (11), the gas valve (17) and a blower respectively by means of the control panel (16).

Description

Automatically controlled gas fireplace

The present invention relates to a gas fireplace, and more particularly to an automatically controlled gas fireplace. Background technique

Gas fireplaces in the prior art have traditionally used conventional manual control of ignition to manually adjust the size of the flame. When adjusting the ignition or adjusting the size of the flame, even kneeling on the ground to operate by hand is laborious and time consuming, and easily damages the control element, and is adjusted by personal feeling. At the same time, it is inconvenient to observe the combustion conditions in the fireplace. It is difficult to control the combustion in an optimal state, that is, it is impossible to accurately control the indoor temperature, and it is impossible to make a clear judgment on the occurrence of the failure in time. Summary of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic controlled gas fireplace that overcomes the deficiencies of the prior art manual controls. .

In order to achieve the above object, the technical solution adopted by the present invention is: It comprises: a casing, a furnace located in the casing, a burner located in the furnace, an ignition needle on the burner, a detection needle and a burner connected thereto a gas valve, a fan disposed in the furnace, and a control system disposed on the casing; the control system includes a computer board including a control chip, respectively connected to a display on the computer board, a control panel, a temperature gauge, The chip control system placed in the control chip and the remote controller connected to the computer board; the computer board is respectively connected to the ignition needle, the detecting needle, the gas valve and the fan on the burner through the control board.

The effect of the gas fireplace automatically controlled by the present invention is remarkable.

• The gas fireplace of the present invention, as described above, is critical to include a control system in which the computer board in the control system controls the operation within the fireplace. Automatic control of the burner's ignition needle, detection needle, gas valve and fan operation can be achieved by operating the remote control or the buttons on the panel to automatically control the various parts. It can be seen that the gas fireplace of the present invention does not suffer from the drawbacks of the prior art manual control structure.

• The gas fireplace of the present invention includes a display, a human-machine interface, and a working condition in the fireplace. The display of the display can be fully displayed, which can easily observe the working conditions in the fireplace directly, and can control the operation of the fireplace in real time through man-machine dialogue.

• The gas fireplace of the present invention includes a temperature measuring instrument connected to the computer board, so that the temperature of the room can be controlled more accurately by the computer board, and the temperature error can be controlled to rc.

• The gas fireplace of the present invention, because it includes a remote control, allows operation and control of the operation of the fireplace at a distance from the fireplace. Therefore, the operation of the gas fireplace of the present invention is more convenient and reliable. DRAWINGS

1 is a schematic view showing the appearance of an embodiment of a gas fireplace of the present invention,

2 is a schematic structural view of an embodiment of the control panel 03 of FIG. 1;

3 is a schematic structural view of an embodiment of a gas fireplace control system of the present invention;

Figure 4 - 1 , Figure 4 - 2 is a schematic diagram of the front and rear panels of the remote control;

Figure 5 is a schematic structural view of an embodiment of a computer board;

6 is a schematic structural diagram of a chip control system placed in a control chip;

Figure 7 is a flow chart of the gas fireplace control system of the present invention. detailed description

The structure and features of the present invention are further described below in conjunction with the accompanying drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the appearance of an embodiment of a gas fireplace according to the present invention. As shown in Fig. 1, the gas fireplace of the present invention comprises a furnace 02 in which the casing 01 is located in the casing 01, and a control panel 03 on the casing 01.

Figure 2 is an enlarged schematic view of the control panel 03 of Figure 1.

As shown in FIG. 2, in this embodiment, there is a downtime flashing mark 031 on the control panel 03, a timing indicator 032, and a wind speed indicator 033 is displayed, which is divided into high, medium and low third speeds, on/off. Mark 034, set temperature mark 035, reset indicator mark 036, and button 037.

3 is a schematic view showing the structure of an automatic control gas fireplace according to the present invention. As shown in FIG. 3, the gas fireplace automatically controlled by the present invention comprises: a burner 18 located in the niche 02, an ignition needle 13 and a detecting needle 111 located on the burner 18, and a gas valve 17 connected to the burner 18. And a fan disposed in the furnace 02. In the embodiment, the fan comprises: a strong exhaust fan 12 and a circulation fan 110. a control system placed on the housing 01; as shown in FIG. 3, the control system includes: an electric power including the control chip 151 The brain board 15 is respectively connected to the display 11 on the computer board 15, the control board 16, the temperature measuring meter 14, and the remote controller 19 connected to the computer board 15, and the computer board 15 is respectively connected to the ignition on the burner 18 through the control board 16. The needle 13, the detecting needle 111, the gas valve 17, the forced exhaust fan 12, and the circulating fan 110 are provided. ·

4 to 1 and 4 to 2 are schematic views of the front and rear panels of an embodiment of the remote controller. As shown in Fig. 4-1 (main view), there is an on/off button 194 on the front side of the remote controller 19, a control fan button 193 and a wind speed display flag 196, a timed on and off button 192, 1912 and a timing indicator 195, a clock and Minute adjustment buttons 191, 1913, set temperature drop and rise buttons 199, 1910 and display set temperature flag 197, reset button 1911 and reset flag 198; as shown in Fig. 4-2 (rear view), there is a standard clock on the back Button 1914 and remote control reset button 1915.

The buttons and markings on the remote control panel of Figure 4-1, Figure 4-2 above fully demonstrate that the operation of the fireplace can be fully controlled by operating the remote control.

Figure 5 is a circuit diagram of an embodiment of a computer board. As shown in FIG. 5, in the embodiment, the computer board 15 includes a control chip 151 (in this embodiment, the control chip 151 is a CPU chip), a driving chip 153 connected to the control chip 151, and a remote control receiving head. 154, a display driving chip 156, a relay group 155 connected to the control board, and a power supply 152 including a rectifier and a voltage regulator; a connection key group 158 and a buzzer 157 connected to respective buttons on the driving chip 153.

As shown in FIG. 5 and FIG. 3, the display driving chip 156 connected to the control chip 151 is connected to the display 11; the remote control receiving head 154 connected to the control chip 151 receives the signal of the remote controller 19; and is connected to the control chip 151. The upper relay group 155 is connected to the control board 16; the connection key groups 158 connected to the respective buttons on the drive chip 153 are respectively connected to respective buttons 037 (shown in Fig. 2) on the control panel. In the present embodiment, the connection key 158 includes the high, middle and low third gears of the circulation fan, the ignition key, the reset key, and the strong exhaust fan key (etc.).

Figure 6 is a block diagram showing an embodiment of a chip control system (software) placed in a control chip of a computer board in the control system of the present invention. In this embodiment, the control chip 151 disposed in the computer board 15 is a CPU chip (central processing unit). As shown in FIG. 5, the chip control system (software) placed in the control chip 151 includes: an information input module 1511, an information processing distribution module 1512 coupled to the information input module 1511, and a control coupled to the information processing distribution module 1512. The information sending module 1513, the tracking monitoring information module coupled with the control information sending module 1513 and the information input module 1511 The information input module 1511 is configured to receive a 幵/OFF signal input through a button on a remote controller or a panel, a temperature range setting, a fan wind speed setting, a working time setting, and a detection needle or a temperature measuring instrument. Tracking detection information and the like, and transmitting the received information to the information processing and distribution module 1512;

The information processing and distribution module 1512 is configured to process the information input by the information input module 1511, that is, first convert the analog information into a digital signal, and then convert the analog information into an analog signal, according to different analog signals. The information of the control part is sent to the control information sending module 1513; for example, after the on/off button on the remote controller or the panel is pressed, the information input module 1511 receives the information of the power on, and then transmits the information to the information processing and distribution. In the module 1512, after receiving the information, the information processing distribution module 1512 converts the analog signal of the downtime into a digital signal, and converts the digital signal into a voltage signal (analog signal), and the voltage signal should be distributed to the strong exhaust air. on board. Because the gas fireplace is operated according to the procedure of the gas wall furnace, it is first necessary to remove the exhaust gas left in the furnace to avoid deflagration of the burner and affect the safety of the burner combustion. Therefore, after the voltage signal is input into the control information sending module 1513, the control information transmitting module 1513 applies the signal to the strong exhaust fan through the control board to start the operation of the strong exhaust fan;

The control signal sending module 1513 is configured to send the information conveyed by the information processing and distributing module 1512, and is responsible for notifying the control information and the transmitted control position notification tracking information module 1514 and transmitting it to the display for real-time display in the fireplace. Working condition

The tracking detection information module 1514 is configured to track and detect the control information and the control position notified from the control information transmitting module 1513, and deliver the detected information to the information input module 1511; for example, when receiving the control information sending module 1513 When the ignition needle is informed that the ignition pulse has been stopped, the tracking detection information module 1514 collects information for detecting the burner flame from the detection needle through the control panel, and transmits the information through the information input module 1511 regardless of whether the detection result is a signal with or without a flame. When the information processing distribution module 1512 receives that no flame signal is detected, it indicates that the burner is not operating normally, and the information processing distribution module 1512 sends a signal to the control information transmitting module 1513 to close the gas valve. Because at this time, it is necessary to stop the combustion of the burner, check whether the operating condition in the fireplace is normal or re-ignite the ignition needle to emit the ignition pulse.

Figure 7 is a flow chart of the control system of the present invention. As shown in Figure 7: Step 1 201, power on, start the chip control system: Start the power on, first press the 幵/OFF button through the remote control or control panel to start the chip control system (software) placed in the control chip of the computer board in the control system. The chip control system begins to control the operation of the gas fireplace;

Step 2: 202, start the strong exhaust fan to start working, and clear the exhaust gas in the furnace: After the chip control system is started, according to the gas fireplace operation program, first output a signal (voltage signal) to the strong exhaust fan, and start the forced exhaust fan to start working. The strong exhaust fan first removes the exhaust gas left in the furnace to prevent the burner from deflagrating and ensure the safe combustion of the burner;

Step 3: 203, detecting whether the forced exhaust fan works for 5 seconds: When the strong exhaust fan is started, the chip control system tracks the timing and detects whether the forced exhaust fan has been working for 5 seconds, because usually, the strong exhaust fan After 5 seconds of work, the exhaust gas left in the furnace has been basically discharged, and the burner can be ignited;

Step 4: 204, start the ignition needle and open the gas valve: After the forced exhaust fan starts to work for 5 seconds, the chip control system sends a starting ignition needle to emit an ignition pulse through the control panel, and simultaneously opens the gas valve to supply the combustion gas to the burner. ;

Step 5 205, the chip control system (tracking monitoring information module) tracks and detects the working state of the ignition needle: after the ignition needle is started, detecting whether the ignition pulse of the ignition needle continuously emits the combustion gas to the burner has reached 10 seconds, Because normally, after 10 seconds of continuous firing of the ignition pulse, the combustion gas on the burner has been ignited;

Step 6 206, issuing a signal for stopping the ignition needle: when the chip control system detects that the ignition pulse has been emitted for 10 seconds, and the combustion gas has been ignited, the ignition pulse is emitted to stop the ignition pulse, that is, the pulse ignition is extinguished;

Step 7 207, the chip control system (tracking monitoring information module) tracks and detects the working state of the burner: when the ignition needle stops emitting the ignition pulse, the combustion gas enthalpy is ignited, and the chip control system detects the burner through the control board to the detecting needle The flame on the fire (at this time, because the ignition pulse has been extinguished, the flame that can be detected must be emitted by the burner, which is usually called the detection of the detection needle at this time), if the detection needle detects the fire, it is carried out. One step, otherwise proceed to step 4 204, restart the ignition needle to emit an ignition pulse, and ignite the burner again;

Step 8 208, starting the circulating fan to work, performing heat exchange: when the chip control system detects the flame through the detecting needle, according to the operating procedure of the gas fireplace, the signal of the starting circulating fan is issued (usually In the case of a voltage signal), the start-up circulating fan starts to work and performs heat exchange. In this embodiment, the wind speed of the circulating fan is divided into three blocks of high, medium and low;

Step 9 209, set the temperature or set the working time: Set the temperature range by the button on the remote control or the control panel. For example, in this embodiment, the set temperature range is 16° (~ 35°C, or Set the working time to 40 minutes;

Step 10: 210, continue to track and detect the working state of the burner: when the chip control system (tracking monitoring information module) receives the above-mentioned temperature range or working time setting information, the control board passes the detecting needle to the detecting needle in real time (or timing, Or continuous) Detecting the working condition of the burner. If the burner does not detect the flame (flame) of the burner, indicating that the burner is not burning properly, the gas valve must be closed, the condition of the machine must be checked, and then restarted. Then proceed from step 2202; if the detecting needle detects the flame of the burner, indicating that the burner is operating normally, proceed to the next step;

Step 11 211, detecting temperature (room temperature) or burner operating time: The chip control system detects the temperature (indoor temperature) by a temperature gauge connected to the computer board, or detects the working time of the burner, if the detected temperature or time If the set temperature or time has not been reached, the burner will continue to work; if the set temperature has been reached or the set time has elapsed, proceed to the next step;

Step 12 212, closing the gas valve, suspending the operation of the burner: When the chip control system keeps track of the detected temperature, if the set temperature or set time has been reached, the gas valve is temporarily closed to stop the combustion of the burner;

Step 13 213, restarting the burner operation: When the gas valve is temporarily closed to stop the combustion of the burner, the chip control system (tracking monitoring information module) continues to follow the detection, when the detected temperature is lower than the set temperature, or In the present embodiment, when the detected temperature is lower than the set temperature 3 ^D C, the burner operation is restarted, and the fourth step 204 is repeated.

As described above, the flow of the control system, when the on/off button is set, sets the temperature signal or sets the working time signal, as long as there is a signal input, all the way leading the parts (Y=A+B) have output, as long as there is The signal input automatically controls the operation of the gas fireplace.

As described above, as long as the button on the remote control or control panel is operated, and the power button is pressed, a signal is immediately output to the control system of the burner to ensure full control of the burner. In this embodiment,

幵: Turn on the power to supply power to the fully automatic burner control system; Off: Press the shutdown button to cut off the gas valve power supply, and the machine will cut off the power after 10 minutes delay (to ensure the body heat dissipation);

Reset button: It is an abnormal condition, it will automatically shut down, automatically cut off the power supply, on the display

The VFD (or LCD) digital display "RESET" indicator lights up. To activate, you must press this button to restore power to its original condition.

In this embodiment, the technical indicators in the fireplace are:

Compliant with CSA (Canadian Gas Safety Standard) and U1 (US Gas Safety Standard) standards

1. Rated working voltage: AC220V/50Hz/ AC110V/60Hz, error ±5%

2. Ignition parameters:

Ignition time: 2 seconds ± 0.5 seconds; ignition frequency: 8 times / sec; ignition high voltage: 12KV _; ignition distance: 5 ± lmm _; single head ignition; stop ignition 2 seconds after ignition

3. From the flame detection: 2. After 2 seconds, the flame (flame) is not detected, and the ignition is immediately started. If the ignition fails, immediately close the gas valve.

4. Temperature control function:

Setting range: 15°C~35°C, it will automatically stop when it reaches the set value, low and set value; TC will automatically turn on, and the room temperature will stop immediately after 35°C. The computer board is forced to cool by a fan at 65 °C. Temperature accuracy range: ± 1. C

5. Timing function:

Clock; time setting; regular power on/off function: (with clock display) '

6. Circulating fan control requirements:

The circulating fan has adjustable high, medium and low gears (for example, with a covered pole motor, three-speed tap, 25W~ weight, 220V/50HZ; or 110V/60Hz, 2800rin/min). After shutdown, the fan continues to run for 10 minutes, guaranteeing The heat of the fireplace is exhausted.

7. Requirements for strong exhaust fans:

Pre-cleaning time: Pre-cleaning for 5 seconds to ignite; for example, electrical parameters: 25W, 220V/50Hz; or 110V/60Hz, H-class, 1400~2100rin/min adjustable; Wind speed: 4~9m/s; Air volume: 20m ³ ~ 40m ³ /h.

From the above flow, it is sufficient to demonstrate that the gas fireplace of the present invention is automatically controlled by the control system, and the operation is simple, safe and reliable.

Claims

Rights request

An automatically controlled gas fireplace comprising: a casing, a furnace located in the casing, a burner located in the furnace, an ignition needle on the burner, a detection needle and a gas valve connected to the burner, and a fan disposed in the furnace, characterized by comprising a control system disposed on the casing; the control system includes a computer board including a control chip, respectively connected to a display on the computer board, a control panel, a temperature gauge, The chip control system in the control chip, and the remote controller connected to the computer board; the computer board is respectively connected to the ignition needle, the detecting needle, the gas valve and the fan on the burner through the control board.

2. An automatically controlled gas fireplace according to claim 1 wherein said fan comprises a forced exhaust fan and a circulating fan.

3 . The self-controlled gas fireplace of claim 1 , wherein the chip control system disposed in the control chip comprises: an information input module, an information processing and distribution module coupled to the information input module, and A control signal transmitting module coupled to the information processing distribution module, and a tracking detection information module coupled to the control signal transmitting module and the information input module.