KR100286135B1 - Method and device for trilateral control of gas boiler - Google Patents

Abstract

The present invention includes the steps of supplying power to the three-way control system, detecting the water flow of the hot water, recognizing the water flow detection at the control panel end, and driving the control circuit unit by the instruction of the control determination unit; Detecting a response to an instruction of the control panel end, driving a relay if there is no abnormality in the response, driving a relay according to the instruction of the control panel end, and detecting a signal for the relay. Three-way switching in the three-way switching method, the three-way switching step is switched to drive the three-sided by the signal of the relay, and the step of driving the three-sided in accordance with the switching of the three-sided smoothly controlled three-way in the three-way gas boiler. Detects and displays any abnormalities (failures and malfunctions) when the damage occurs and maximizes product productivity It is a feature of the present invention to provide a three-way control method and apparatus for a gas boiler.

Description

Method and device for trilateral control of gas boiler

The present invention relates to a three-way control method and apparatus for a gas boiler, in particular, by forming a control panel end and a response signal detection unit in a one-pipe two-channel gas boiler to smoothly control the three-way and abnormality in the phase change (fault and operation error) The present invention relates to a three-way control method and apparatus of a gas boiler that detects and displays a) and minimizes a loss of a boiler and maximizes product productivity.

In the conventional hot water and heating combined gas boiler, the three-way driving control circuit is connected to the other end of the small relay Ry1 and the water flow switch FLS connected at one end to the DC power source DC as shown in FIG. The three-way power relay Ry2 is connected to the AC power source AC1 through the excitation contact a of the small relay Ry1, so that the high voltage AC power source AC2 and the relatively low voltage DC power source DC are not directly contacted. The driving motor M for driving the three sides is connected to the AC power source AC2 through the excitation contact a1 of the power relay Ry2, and the water flow switch FLS is used for heating. "Off" causes the DC power supply DC to the small relay Ry1 to be cut off, and the excitation contact a becomes "off".

As a result, the AC power source AC1 applied to the power relay Ry2 is cut off, the excitation contact a1 is turned off, and the AC power source AC2 applied to the driving motor M driving the triangular direction is cut off. The three-way valve is maintained in a state of connecting the supply side of the heating coil (not shown) and the heating pipe (not shown) to achieve the above-described heating application.

In addition, when using hot water, when the user opens the hot water valve (not shown) installed in the hot water supply pipe (not shown) and passes the direct water through the direct water line (not shown), the water flow switch (FLS) becomes "on", so it is small. The relay Ry1 is excited so that the excitation contact a is "on", and accordingly the power relay Ry2 is excited so that the excitation contact a1 is "on", so that the driving motor for driving the triangulation AC power source AC2 was applied to M), and the three sides changed to the state in which the heating coil and the hot water heating tube were connected to each other so as to be in the hot water use state described above.

The relay contact C and the relay contact C1 are common contacts of the relays Ry1 and Ry2.

However, the three-way drive control circuit has two stages in operating the DC small relay Ry1 and the AC power relay Ry2. Therefore, there is a problem in that malfunction occurs. The valve ball is moved by the rotational force of the driving motor when reheating to the heating use state. On the contrary, when the valve ball is switched to the heating using state from the hot water use state, the valve ball is switched by the elastic recovery force of the spring. Since the time required for switching between the two is not constant, the switching is unstable, and power is continuously applied to the three-way drive motor, which is a synchronized motor, even after the ball of the valve is moved when hot water is used, thereby increasing power consumption and durability. There is always a problem of losing the motor.

Therefore, the present invention has been researched and developed to solve the above problems and has the following object.

The present invention forms a control panel end and a response signal detecting unit in a one-pipe two-channel gas boiler to smoothly control three directions and detect and display abnormalities in three directions, thereby minimizing boiler loss and product productivity. The purpose is to provide a three-way control method of the gas boiler to maximize.

It is still another object of the present invention to provide a gas boiler three-way control apparatus suitable for implementing the three-way control method of the gas boiler.

In order to achieve the object of the present invention, supplying power to the trilateral control system, detecting the water flow of hot water, recognizing the water flow detection at the control panel end, and controlled by the instruction of the control panel end Driving a circuit unit, detecting a response to an instruction of the control panel end, driving a relay if there is no error in the response, driving a relay according to the instruction of the control panel end, and the relay; Detecting a signal for the three, the three-sided switching step of switching the three-sided driving by the signal of the relay, and the three-sided driving according to the three-sided switching.

1 is a schematic view of a one-pipe two-channel gas boiler for explaining the present invention.

2 is a flow chart showing the operational relationship of the present invention.

Figure 3 is a block diagram for explaining the present invention.

4 is a detailed circuit diagram for practicing the present invention.

5 is a conventional trilateral control circuit.

<Explanation of symbols for main parts of drawing>

1: gas boiler 10: combustor

20: water tank 30: secondary heat exchanger

36: three-way side 100: power supply

110: abnormality display unit 120: control panel end

130: water flow detector 140: response signal detector

150: control circuit unit 160: relay drive unit

170: three-way switching part FLS: water flow switch

M: Drive motor Q, Q1: Transistor

D1, D2: Diode LED: Light Emitting Diode

The above object will be described in detail with reference to the accompanying drawings.

That is, Figure 1 shows a gas boiler (1) to which the method of the present invention is applied, which is installed in the casing (2) of the gas boiler (1) to burn a gas to heat the hot water for heating or hot water supply ( 10), the water tank 20 for storing the heating circulation water, and the secondary heat exchanger 30 having different paths for circulation of hot water and cold water are configured by mutually coupling.

At this time, a burner group 12 including a plurality of burners is formed in the casing 11 of the combustor 10, and a primary heat exchanger 14 is installed in an upper direction thereof to prevent overheating and the water passes therethrough. The burner group 12 is heated, and a blower 13 for supplying combustion air is installed at the bottom of the combustor casing 11, and the burner group 12 is provided near the burner group 12. A spark coupler 15 for ignition and a frame rod 16 for detecting ignition of the burner group are installed, and an exhaust unit 17 for discharging exhaust gas is provided on the upper surface of the combustor casing 11. It is formed through the casing 2 of 1).

In addition, a gas pipe 50 for supplying gas is installed below the burner group 12, wherein two electron valves 51 and 52 for passing the gas at the time of energization and a proportional valve for adjusting the gas supply amount are provided. 53 is provided from the upstream of the gas pipe 50 with respect to the gas supply path.

The water tank 20 includes an electrode rod 21 for detecting a quantity of water in the water tank, an overflow tube 22 for discharging excess water, and a water separator 23 for recovering heating water rotated on an underfloor. ) Is installed in the heating return pipe 24 and the water supply pipe 25 for supplying water to the primary heat exchanger 14 is provided with a circulation pump 26 for adjusting the circulation of the water downward.

On the other hand, the secondary heat exchanger 30, the hot water discharge pipe 31 is attached to the supply thermistor 32 for detecting the direct tapping temperature of the hot water supplied to the user by discharging water through the tap water, the external furnace of the gas boiler Direct water inlet pipe (34) equipped with a water flow switch (33) for detecting the presence of water flow by flowing cold water from the water and a mechanical automatic quantity control device for passing a certain amount of water according to the direct water temperature to obtain stable temperature characteristics. The water supply pipe 25 is connected to the heating hot water supply pipe 37 through which water for heating passes through the three-way valve 36.

In addition, between the heating return pipe 24 and the direct water inlet pipe 34 is provided with a tap water supply side 35 for replenishing water when the water tank 20 is insufficient, clogging of the heating filter, heating distributor The bypass pipe 38 is installed to prevent the pressure from rising inside the gas boiler and to circulate the flow of water by making the internal closed circuit of the gas boiler when the heating pipe is blocked.

Also, the method and apparatus of the present invention will be described with reference to FIGS. 2 to 4.

The step (S1) is made to be applied to each component by "AC" AC and DC (DC) power and the power (AC, DC) supply is applied differently for each component, it is suggested as an embodiment for this DC power 5V is applied to the determination unit 120 and the water flow detection unit 130 and controls the response signal detection unit 140 and the three-way switching unit 170 for detecting an error of the control signal output from the control panel end 120. The DC power supply 12V is applied to the control circuit unit 150 for driving, the DC power supply 18V is applied to the relay driving unit 160 for driving the three-way, and the three-way bridge circuit is switched by the relay driving unit 160. By the three-way switching unit 170 to the AC power supply 110V to 220V to the three-way switching unit 170 for switching the three-way bridge circuit.

When the power (S1) is applied in the water flow detection unit 130, the user using the gas boiler (1) is discriminated and detected whether the hot water operation (52), if the user uses hot water, the water flow detection unit 130 The output signal is sent to the control panel end 120 made of a microcomputer to drive the control circuit 150, and when the user does not operate the hot water, the signal is continuously output to the step 1.

At this time, the control signal of the control panel terminal 120 confirms whether the signal output error to the control circuit unit 150 (S5). If an error is detected, it is recognized as an abnormal operation (S8) and moves to the step 3 at the same time. In step 9, the abnormal state display unit S10 displays an error result while stopping the three-way drive.

On the other hand, if no error is detected in step 5, a voltage is applied to the coil of the relay.

At this time, the error is detected and processed in the same manner as in Step 5 above (S7).

In addition, if an error is not detected in the stop 7, the bridge circuit of the three-way switching unit 170 is switched (S11) to transfer heating and hot water.

The driving motor operating in accordance with the contact of the three-way deformable body 170 is operated to control the three-way as a result. (S12)

In addition, looking at a detailed circuit diagram of an embodiment of the present invention to the control panel end 120 made of a microcomputer through the resistance (R2) to the water flow detection unit 130 is connected to the water flow switch (FLS) and the resistor (R1) in series. It is connected to output a signal.

When an error occurs around the control panel terminal 120, the control circuit unit 150 including the abnormality occurrence display unit 110 and the transistor Q for displaying the error, and the control signal output from the control panel terminal 120. Response signal detection unit 140 for detecting an error is connected.

In addition, a resistor (R6) (R7) is connected in parallel between the base terminal and the Easter terminal of the transistor (Q) of the control circuit unit 150, and the relay driver 160 is connected to the collector terminal of the transistor (Q) Is done.

At this time, when the low signal is input to the control panel terminal 120 from the water flow detection unit 130, the control panel terminal 120 becomes high and the transistor Q of the control circuit unit 110 is energized. The relay driving unit 160 connected to the collector terminal of the transistor Q is operated and the bridge circuit of the three-way switching unit 170 is switched to the hot water side B.

Here, the response signal detecting unit 140 in which the resistor R8, the diode D1, and the resistor R9 are in series is controlled by the control panel terminal 120 with respect to the control circuit unit 150 and the relay driver 160. It detects the signal and detects whether it is normally transmitted or not.

If any one of the components has an error with respect to the control signal, the response signal detection unit 140 outputs a low signal to the control panel terminal 120. The control panel end 120 receiving the low signal from the emergency signal detecting unit 140 checks an abnormal operation of the components and stops driving of the three-sided 36.

In addition, the abnormality occurrence display unit 110 including the transistor Q1 and the light emitting diode LED is configured to be connected to the control panel 120 through a resistor R3 to display a result of the abnormal operation.

The three-way switching unit 170 is connected to an AC power source to operate the driving motor (M).

Driven motor (M) is connected to the three-way switching unit 170 and the three-wire type switch is switched to the heating (A) and hot water side (B) and the three-way (36) in accordance with the operation of the motor (M) This is controlled.

At this time, the switch in the heating use state and the hot water use state is turned off by operating a gear (not shown), a driving side (not shown), and a cam (not shown) which are linked to the driving motor M by operating the valve in the three-sided valve. Then, the energization to the drive motor M is stopped, and the three-way side 36 is made to be maintained in a state switched by the cam and the drive shaft.

As described above, the present invention has an effect of performing a more accurate situation determination and instruction by providing a control panel end, and has a response signal detection unit to control a malfunction according to the command signal of the control panel end. And it is apparent that this is a very useful invention that can not only improve the reliability and stability of the operation of the present invention, but also have various effects such as minimizing the loss of the boiler and maximizing the product productivity.

Claims (7)

Supplying alternating current and direct current power to the trilateral control system, detecting water flow of hot water, recognizing the water flow at the control panel end of the microcomputer, and instructing the control circuit by the control panel end. Driving; detecting a response to an instruction of the control panel; driving a relay if there is no error in the response; driving a relay according to the instruction of the control panel; Detecting a signal for the three-sided switching step so that the three-sided motor is driven by the relay signal, and the three-sided driving according to the three-sided switching of the gas boiler, characterized in that Trilateral control method. The gas boiler according to claim 1, wherein when an error of operation occurs in the response in the step of detecting a response to the instruction of the control panel end, an error of the indication signal is informed to the control panel end by a response signal. Trilateral control method. The gas boiler three-way control method according to claim 2, wherein when an operation error is input at the control panel, the abnormality display is displayed. 4. The method of claim 3, wherein the control panel end comprises a microcomputer to control data of an input signal and an output signal. A power supply unit 100 for supplying AC and DC power to each component, a water flow detector 130 for detecting the presence of hot water, and a signal of this water flow detector for control of the three-sided valve 36 and each component. The control panel terminal 120 for detecting an error of the device, the control circuit unit 150 for driving control of the three-sided 36 according to the signal of the control panel terminal 120, and the control circuit unit 150 is connected to the relay The relay driver 160 to which a voltage is applied to the coil, the emergency signal detector 140 that determines whether an error of operation occurs in the control circuit 150 and the relay driver 160, and the relay driver 160. Three-way control of the gas boiler characterized in that the connection is composed of a three-way switching unit 170 for performing the three-way switching receiving the switching signal from the three-way switching unit 170 operating in accordance with the signal of the three-way switching unit 170 Device. The method of claim 5, wherein the emergency signal detecting unit 140 is configured to stop the driving of the three-way (36) when the operation error of each component occurs and display the error operation occurrence on the abnormality display unit 110 Three-way control device of the gas boiler, characterized in that. The method of claim 5, wherein the control panel terminal 120 is configured as a microcomputer to control the data of the input signal and the output signal, the control circuit unit 150 is a resistor (R6) between the base terminal and the emitter terminal of the transistor (Q) R7 is connected in parallel, the response signal detection unit 140 is a three-way control device of the gas boiler, characterized in that the resistor (R8), the diode (D1) and the resistor (R9) is connected in series. .