KR920009089B1 - Gas boiler control - Google Patents

Abstract

The gas boiler including a controller (10), a burner (20), a water tank (30) and het exchanger (40) is controlled by microprocessor (10'). If the selective switch on the summer/winter mode were switched to the summer mode in the state of inputting the power source voltage to the gas boiler, the water feeding of the three-way valve maintains until the selective switch is converted to the wintermode. If the selective switch were switched to the winter mode, the heating delay time is prevented by converting the water feeding state into the heating system direction. This method is useful for enhancing the reliability of boiler.

Description

Three-way direction control method using 'summer' mode in gas boiler

1 is a block diagram of a gas boiler control unit for explaining the method of the present invention.

2 is a schematic diagram of a one-pipe two-channel gas boiler to which the present invention is applied.

3 is a flowchart for explaining the method of the present invention.

* Explanation of symbols for the main parts of the drawings

10: control unit 10 ': microcomputer

11: manual temperature control device 12: summer / winter mode selector

17: three-way drive unit 18: water flow detection unit

20: combustor 40: secondary heat exchanger

43 ＂: Current switch 44: Three way

114: summer / winter mode signal input 115; Water flow detection input unit

116: three-way control SW1: operation switch

SW2: Summer / Winter mode selector switch RL: Relay

Tr: Transistor

The present invention relates to a three-way direction control method when using a one-pipe two-channel gas boiler as a 'summer' mode, in particular, so that the direction of the triangular direction can be fixed in the hot water supply direction when using the gas boiler in the 'summer' mode It relates to a trilateral direction control method when using a 'summer' mode in a gas boiler.

The three-way direction installed in the conventional one-pipe two-channel gas boiler maintains the heating direction at all times in the normal state in which the operating signal is not input while the 'heating use' signal is not output from the manual temperature controller while using the 'winter' mode. If the heating signal is input while the operating signal is input, the heating direction is maintained as described above, but as the user opens the faucet to use hot water, the water flow switch turns on. The direction of the three sides is switched to the hot water supply direction.

However, when the gas boiler is used as a 'summer' mode, the three-sided valve is always kept in the heating direction and hot water is used by the user regardless of whether or not a driving signal is input or whether or not the 'hot water use' signal is used. In this case, the three sides are switched in the tapping direction by the 'on' signal of the water flow switch.

Therefore, in the summer, the purpose of using only hot water is not only to input the operation signal, but also the three sides always maintain the heating direction before the faucet is opened. Therefore, the user must open the hot water faucet to use hot water. As the water flow switch turns 'on', the direction of the three-way direction is switched to the tapping direction. At this time, the heating speed of the hot water tapping water is slowed for a predetermined time, and the durability of the three-way water is lowered as the number of operation of the three-way water is increased. There was a problem.

The present invention has been proposed to solve such a conventional problem, in the 'summer' mode for the purpose of using only hot water, if only the operation signal signal is input so that the direction of the three sides can always be maintained in the hot water supply direction when using hot water The purpose of the present invention is to provide a triangular directional control method when using a 'summer' mode in a gas boiler that not only increases the heating rate of hot water but also prevents the durability of the triangular feces by preventing the time required for the triangular diversion. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

First, the one-pipe two-channel gas boiler 100 to which the method of the present invention is applied is installed in the casing 101 to which the manual temperature controller 11 is connected to the outside as shown in FIG. A control unit 10 for controlling; A combustor 20 for combusting gas for warming hot water for heating or hot water supply; A water tank 30 for storing heating circulation water; The secondary heat exchanger 40 having different paths for circulation of hot and cold water is configured by mutually coupling.

In this case, a burner group 22 including a plurality of burners is formed in the casing 21 of the combustor 20, and a primary heat exchanger having a temperature fuse 24 ′ attached thereto at an upper direction thereof to prevent overheating. 24 is installed and the burner group 22 heats the water passing therethrough, and a blower 23 for supplying combustion air is installed on the bottom surface of the combustion casing 21, and the burner group In the vicinity of the 22, a spark rod 26 connected to the sparker 25 for igniting the burner group 22 and a frame rod 27 for detecting the ignition of the burner group 22 are installed. An exhaust portion 28 for discharging the exhaust gas is formed in the upper surface of the 21 through the boiler casing 101.

In addition, a gas pipe 50 for supplying gas is provided below the burner group 22, and there are two electron valves 51 and 52 for passing the gas at the time of energization and a proportion for adjusting the gas supply amount. The side 53 is provided from the upstream of the gas pipe 50 with respect to the gas supply path.

In addition, the water tank 30 has a float switch 31 for detecting the quantity of water in the water tank 30, an overflow pipe 32 for discharging excess water, and a heating water rotated at a temperature bottom. The water supply pipe 34 for supplying water to the return pipe 33 and the primary heat exchanger 24 provided with the filter 33 'is installed, wherein the water supply pipe 34 adjusts the circulation of water. Purifying pump 35 is installed in the downward direction.

On the other hand, the secondary heat exchanger 40 is a hot water pipe 41 for guiding the hot water introduced from the primary heat exchanger 24 and the freeze prevention heater 42 'is attached to discharge the water through the tap water. The hot water discharge 42 and the direct water inflow pipe 43 and the return pipe 33 provided with a filter 43 'and a water flow switch 43 ＂for detecting the presence or absence of water flow by introducing cold water from the outside of the gas boiler. It is connected to the auxiliary pipe 46 is installed to allow the water circulated in the secondary heat exchanger 40 is returned, wherein the water supply pipe 34 to the hot water pipe 41 and the heating through the three-way (44) Is connected to the heating hot water supply pipe 45 is passed through.

In addition, the water supply pipe (34) passing through the primary heat exchanger (24) is provided with a debris prevention bimetal (34 ') and a demister (34 ＂) for measuring the tapping temperature, respectively, from upstream with respect to the flow of water. Between the return pipe 33 and the direct inflow pipe 43, the water tank 30, the aquatic bog side 54 for replenishing water when water is insufficient is installed, the heating hot water pipe ( Bypass pipe 55 for preventing boiling when water does not flow to 45 is connected between the return pipe 33 and the heating hot water supply pipe 45, the low temperature detection bimetal 56 to sense the outside temperature of the boiler ) Is installed on the inner wall of the boiler casing 101.

As shown in FIG. 1, the control unit 10 is a control circuit centering on the microcomputer 10 ', and is installed in the manual temperature control device 11 in the microcomputer 10' in summer / winter. A summer / winter mode signal input unit 114 for receiving a predetermined mode signal selected by the summer / winter mode selection switch SW2 in the mode selection unit 12; A water flow detection input unit 115 for receiving a predetermined signal from the water flow detection unit 18 for detecting a state of the water flow switch 43 'and outputting a predetermined signal; Comprised of a transistor (Tr), a resistor (R1), a diode (D1) and a relay (RL) is a three-way receiving a predetermined output signal from the summer / winter mode signal input unit 114 and the water flow detection input unit 115, respectively It is provided with the trilateral control part 16 which outputs a predetermined signal to the trilateral drive part 17 which controls the side 44. As shown in FIG.

Meanwhile, in the method of the present invention, as shown in FIG. 4, the summer / winter module selector switch SW2 in the summer / winter module selector 12 is 'summer' in a state in which a power voltage is supplied to the gas boiler. When operating in the summer / winter mode selection switch (SW2) to maintain the direction of the three-way 44 in the hot water supply direction until it is driven to the 'winter' mode, after the summer / winter was driven to the 'summer' mode When the mode selection switch (SW2) is driven to the 'winter' mode is made of a process of switching the three-sided 44 in the heating direction.

When explaining the operation and effect of the method of the present invention made with such a process with reference to FIGS. 1 and 2 as follows.

First, the user inputs the operation signal into the gas boiler by turning on the operation switch SW1 in the summer / winter module selection unit 12 while the user applies the power voltage, and installs the summer / winter unit in the manual temperature saving device. When operating the summer / winter module selector switch SW2 in the module selector 12, a potential difference caused by the power supply voltage V3 is generated, so that the summer / winter module signal input unit 114 in the controller 10 is operated. This potential difference makes it possible to recognize which of the 'summer' or 'winter' modes is selected.

At this time, if the state of the summer / winter mode selection switch (SW2) is driven to the 'summer' mode, the output of the water flow switch (43 ＂) in the water flow detection unit 18 input through the water flow detection input unit 115 Irrespective of the signal, the three-way side 44 is switched in the hot water direction.

That is, when the use mode of the gas boiler is determined as the 'summer' mode, the trilateral control unit 116 outputs a 'high' signal irrespective of the output signal of the water flow detection unit 18, so that the emitter ground transistor Tr is used. Is turned on and relay RL is driven.

Therefore, since the movable terminal C of the relay RL contact switch S1 normally connected to the fixed terminal RL _W in the heating direction is connected to the fixed terminal RL _H in the hot water direction, the three-way side 44 is used. This is switched to the hot water supply direction.

As such, when the gas boiler is driven in the 'summer' mode, the heating direction of the hot water is generated by changing the direction of the three-sided valve 4 whenever hot water is used as the direction of the three-sided valve 44 is changed to an improved hot water supply direction. In addition to preventing the delay phenomenon, it is possible to prevent the degradation of the durability of the triode 44 in advance by reducing the number of movements of the triode.

In this operation state, when the user operates the summer / winter module selection switch SW2 to the 'winter' mode in order to drive the gas boiler to the 'winter' mode, the three-way in the control unit 10 as described above. Since the output signal of the controller 116 becomes a 'low' state, the transistor Tr is turned off and the relay RL is turned off.

Therefore, since it is connected to the movable terminal C and the fixed terminal RL _H of the contact switch S1 connected to the fixed terminal RL _W , the three-sided sides 44 are switched in the heating direction.

In addition, when the user turns the faucet while the operation switch is turned on to use hot water, the water flow switch 43 ＂becomes 'on', and thus the 'high' in the three-way control unit 116 connected to the output terminal of the flow detection input unit 115. Since the signal is output, the transistor Tr and the relay RL are driven to change the direction of the three-way side 44 to the hot water supply direction.

As described above, according to the method of the present invention, when the use mode of the boiler is a 'summer' mode using only hot water, the three-way direction is fixed in the hot water supply direction, and in the case of the 'winter' mode, Only when the user wants to use hot water in response to the 'on' signal, the three-way direction is changed to the hot water supply direction, so the heating time delay of the hot water and the water flow switch It is possible to prevent the deterioration of the durability of the three sides due to the on and off in advance to further improve the reliability of the product.

Claims (1)

The control unit 10, the combustor 20, the water tank 30 and the secondary heat exchanger (40) is a one-pipe two-channel gas boiler which is controlled by the control unit centered on the microcomputer 10 ' Thus, when the summer / winter module selector switch SW2 in the summer / winter module selector 12 is operated as a 'summer' mode while the power voltage is input in the gas boiler, the summer / winter module selector switch The three-way side 44 is kept in the hot water direction until (SW2) is switched to the 'winter' mode, and then the summer / winter mode selection switch SW2 is operated as the 'winter' mode. 44) is a three-way direction control method when using the 'summer' mode in the gas boiler, characterized in that by switching to the heating direction to prevent the delay of the heating time of the hot water supply according to the change of the three-way direction.