KR950004504B1 - Gas boiler - Google Patents

Abstract

A three-way valve for a hot water boiler, which is generally switched over a hot water position or a room heating position, is provided for preventing dust or blockage from sticking onto it. Dust or blockage is easily stuck on the flow way of the valve when the valve is settled at a hot water position for a long time in summer. The change-over operation of the valve is automatically carried out and returned back to the original position when the longer working time than the preset time at a hot water position is detected by a detection part (112) of a microprocessor. A following work command part (115) sends out a command signal for carrying out the change-over operation to a valve operating part (16) via a controller (117) and a D/A converter (15).

Description

How to prevent foreign matter from adhering to trilateral

1 is a block diagram of a control unit for carrying out the present invention.

2 is an overall schematic configuration diagram of a 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 main parts of the drawings

10 ': microcomputer 11: input device

12: oscillator 13: water flow switch on / off input unit

14: data transmission and reception unit 15: D / A converter

16: triangular driving portion 44: triangular

111: hot water, heating combined / hot water determination unit 112: one-way continuous use determination unit

113: timer 114: counter

115: next execution command unit 116: combustion / fire extinguishing drive unit

117: drive part control unit

The present invention relates to a method for preventing foreign matter from adhering to three sides to prevent foreign matters from adhering to the three sides, which are installed in a boiler to transfer heating and hot water in one direction. However, the present invention relates to a method for preventing foreign matters from adhering to the trilateral side, which prevents the abnormal heating of heating water and hot water by preventing the sedimentation of foreign matters caused by long-term transfer.

The three-way toilet installed in the one-pipe two-channel or two-pipe two-channel boiler blocks the water outlet or the water outlet on the heating side according to each operation instruction during the heating and hot water use. Various calcium components contained in the circulating water and foreign matters generated from the various heating pipes and the circulating water are attached to the periphery and three-sided sides of the water ball without the rubber ball, and harden and become larger as time passes.

At this time, in a conventional boiler, when used as a heating and hot water (winter season), or when using only for hot water (summer season), it is changed in one direction and counts the continuously used time. Since it moves in the other direction, it was attached to the water outlet in the three sides and crushed and removed the uncured foreign substance, and then restored to its original state.

In practice, however, the user uses both heating and hot water in the use mode. In this mode, the user uses both heating and hot water, so the three sides are frequently moved toward the heating and hot water sides. Even if you do not make calcium components and various foreign matters, there is no time for the three-sided water to pass through or fixed inside of them so that the foreign matters do not stick in the three-way toilet. Since the side is open and the heating side is closed, foreign matter does not adhere to the water inlet on the heating side even after a long time elapses. When you switch to mode, the triangular on When the water inlet is blocked, foreign matter is fixed and hardened at the tip of the water inlet, so that the water inlet is not completely blocked, and the heated water flows out between them. There was a problem that the heating of the direct water in the abnormally made.

The present invention has been made in order to solve such a conventional problem, and when the water flow switch is 'on' and 'off' or 'off' in the summer selection mode using hot water exclusively from then on If the water flow switch does not turn on again until the predetermined time is counted and the water flow switch is not turned on again, the three-sided valve on the hot water side is transferred to the heating side. It is possible to prevent the leakage due to the phenomenon in advance to prevent abnormal heating of the heating water and hot water in advance, so that the reliability of the product can be further improved, and the purpose thereof is described in detail with reference to the accompanying drawings. Is as follows.

First, the gas boiler 100 to which the method of the present invention is applied includes a control unit 10 installed in a casing 101 to which an input device 11 is connected to the outside as shown in FIG. 2 to control the overall operation of the boiler; A combustor 20 for combusting gas to warm hot water for heating or hot water supply, and an expansion tank 30 for storing heating circulation water; The secondary heat exchanger 40 has mutually different paths for circulation of hot and cold water.

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

In addition, a gas pipe 50 for supplying gas is installed below the burner group 22, and there are two electron valves 51 and 52 for passing the gas when energizing and a proportional valve for adjusting the gas supply amount ( 53 is provided upstream of the gas pipe 50 with respect to the gas supply path.

In addition, the expansion tank (30) to return the heating water rotated on the bottom floor, the return pipe 33 is installed with an overpressure exhaust valve (33 ') and the water supply pipe 34 for supplying water to the main heat exchanger (24) In this case, the water supply pipe 34 is provided with a circulation pump 35 for circulating water in a downward direction.

On the other hand, the auxiliary heat exchanger (40) is a hot water pipe 41 for guiding the hot water introduced from the main heat exchanger 24 and the hot water discharge pipe with a freeze prevention heater (42 ') by discharging water through the tap water. (42), the auxiliary passage 46 for introducing cold water from the outside of the gas boiler to be connected to the filter 43 'and the return pipe 33' so that the water circulated through the auxiliary heat exchanger 40 can be returned. The water supply pipe 34 is connected to the hot water supply pipe 45 through which the water for heating and the hot water pipe 41 pass through the three-way side 44.

In addition, the water supply pipe (34) passing through the main 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 33 and the direct inflow pipe 43, the aquatic supply side 54 for replenishing water when the water tank 30 is insufficient water is installed, the heating hot water pipe 45 by the external situation Bypass pipe (55) for preventing boiling when water does not flow into the connection between the return pipe 33 and the heating hot water supply pipe 45, the low temperature detection bimetal 56 for sensing the outside temperature of the boiler is Differential pressure is provided on the inner wall of the boiler casing 101 and connects the middle portion of the water supply pipe 34 and the inlet of the three-way side 44, in which the air head 60 and the pressure gauge 61 are integrally installed. The switch 70 and the micro switch 71 are provided.

As shown in FIG. 1, the control unit 10 is a control circuit centering on the microcomputer 10 'and a predetermined water flow from the current switch 43 "on / off input unit 13 in the microcomputer 10'. Hot water, heating combined / hot water determination unit for receiving a switch signal, and receives the output signal of the input device 11 input through the data transmission and reception unit 14, respectively, to determine whether the hot water, heating combined or hot water dedicated mode ( And a predetermined signal from the counting unit 114 that counts the output signal of the timer 113 driven by the oscillator 12 and the hot / heating / heating / hot water determining unit 111, respectively. A one-way continuous use determination unit 112 for determining whether only one of the heating units is continuously used for a predetermined time or more, and a next command for receiving the one-way continuous use determination unit 112 and outputting a predetermined command to be executed next time; A transition instruction unit 115; A combustion / extinguishing driver 116 which receives an output signal of the next execution command unit 115 and outputs a predetermined signal according to combustion and extinguishing; A driving component controller 117 for receiving an output signal and outputting a predetermined signal for controlling a corresponding driving component, and receiving the output signal of the driving component controller 117 through the D / A converter 15; By converting into a predetermined analog signal and then the output signal group 118 for driving the three-sided 44 through the three-way drive unit 16 is configured to interconnect.

In addition, the input device 11 includes a selection unit (lla) for hot water / heating / heating / hot water for selecting whether to use hot water / heating or hot water only mode; Hot water, heating combined / hot water only recognition unit 11b for receiving a predetermined signal output from the hot water, heating combined / hot water dedicated selection unit 11a to recognize which mode among the selected hot water, heating combined or hot water dedicated mode (11b) )Wow; Driver for receiving a predetermined signal from the hot water, heating combined / hot water recognition unit 11b and the operation switch on / off recognition unit 11c respectively and outputs a predetermined drive signal through the data transmission and reception unit 14 ( 11d).

Meanwhile, in the method of the present invention, as shown in FIG. YES at S3) When the water flow switch 43 "is turned on (YES at S4) and hot water is used, it is continuously detected (S6) whether the water flow switch is 'off', or the process (S3). In operation S4, when the operation switch or the water flow switch is in the 'off' state, the predetermined time is counted (S7) and whether the water flow switch is turned on or switched to the heating use mode before the predetermined time elapses (S8) is determined. When the water flow switch is turned 'on' during the time counting (YES in S8), the counting time is canceled (S9) and the flow returns to the summer mode selection detecting process (S2), but the water flow until the predetermined time has elapsed. If the switch remains 'off' and the heating mode is not selected (S8 NO), transfer the three-way in the heating direction for a certain time and then return to the original state (S10), while detecting whether the water flow switch is 'on' again during the movement of the three-way (S11) if the water flow switch is still 'off' Returning to the process (S4) of detecting whether it is 'on', and if the water flow switch is 'on' during the three-way movement, the three-sided switch to the hot water side (S12) is made of a process of returning to the hot water use mode (S5). .

Referring to the effect of the present invention made of such a process as follows.

First, when the power cord of the boiler is' on '(S1), the determination unit 11 for hot water, heating combined / hot water in the microcomputer 10' receives a predetermined signal output from the input device 11 to receive hot water. Whether the summer mode is exclusively used or whether the operation switch and the water flow switch 43 ″ are turned on is sequentially detected.

At this time, when the user selects the summer mode through the input device 11, the next execution command unit 115, the drive component control unit 117, the output signal group 118, the D / A converter 15 and the trilateral side Through the driving unit 16 is to move the direction of the three-sided 44 in the warm water direction.

In this state, when the operation switch is turned 'on' and the water flow switch 43 'is turned' on ', a predetermined combustion signal is output through the combustion / digestion driving unit 116, so that the combustion operation is performed. Will continue to be available.

At this time, the determination unit 111 for hot / heating combined / hot water only receives a predetermined signal output from the input device 11 and continuously detects whether the water flow switch 43 ″ is 'off'. In the mode, when the water flow switch 43 "is 'off' or the operation switch or the water flow switch is in the" off "state, the counter 114 controlled by the output signal of the one-way continuous use determination unit 112 is ) Starts counting the output signal of the timer 113.

While counting the predetermined time in the counting unit 114 as described above, the one-way continuous use determining unit 112 receives the output signal of the hot / heating combined use / hot water determining unit 111 and the water flow switch 43 ″. Is continuously turned on or switched from the hot water use mode to the heating use mode. If the water flow switch 43 "is turned on before a predetermined time has elapsed, the user uses hot water again. Since the counter 114 is reset to cancel the counting of the predetermined time (S9), even though the predetermined time has elapsed, the water flow switch 43 " (NO in S8), the direction of the three-way side 44 in the hot water direction is switched to the heating mode for a certain time, and after a certain time is returned to its original state (S10), foreign matter in the heating side of the three sides of the water inlet Sticking and curing It can be prevented in advance to prevent the phenomenon of water leakage by the stuck foreign matter in advance.

On the other hand, while switching the direction of the three-way (44) in the heating mode for a predetermined time in the above, if the water flow switch 43 "is turned on again, the direction of the three-way side to the hot water side, regardless of the remaining time The use of hot water will not interfere.

In addition, the method of the present invention can be applied to a boiler having any one of a one-pipe two-channel or two-pipe two-channel boiler to obtain the same effect.

As described above, according to the present invention, when the water flow switch is 'on' and 'off' or 'off' in the summer selection mode using hot water exclusively, the predetermined time is counted from that time. If the water flow switch does not turn on again until this time passes, the three-way valve on the hot water side is transferred to the heating side for a predetermined time.If the water flow switch turns on during the predetermined time counting, the predetermined time count is canceled and When the water flow switch is turned on again, the three-sided valve on the heating side is immediately transferred to the hot water side, so that leakage due to the sticking phenomenon of foreign substances caused by long-term transfer of the three-sided valve to the hot water side can be prevented. It is possible to prevent abnormal heating of heating water and hot water in advance, so that the reliability of the product can be further improved. The.

Claims (3)

When the summer mode is selected by the user's manipulation of the input device 11 while the power is' on ', the next execution command unit 115 in the microcomputer 10' performs overall control of the system. In the boiler control method for outputting the combustion operation signal according to the hot water use mode, and outputs the combustion operation signal according to the combined mode of hot water and heating when the summer mode is not selected, the hot water and heating combined use installed in the microcomputer 10 ' After recognizing that the hot water mode uses only hot water exclusively for the hot water determination unit 111, the state of the water flow switch and the operation switch through the output signals of the water flow switch on / off input unit 13 and the input device 11. As a result of the detection, if the state is 'off', the time is counted through the counting unit 114 controlled by the output signal of the one-way continuous use determining unit 112, and the state is maintained for a predetermined time or more. Hot water direction by generating a predetermined output signal to the tri-directional drive unit 16 through the driving part control unit l17, the output signal group 118 and the D / A converter 15 in the surface kick-off command unit 115 The three-way direction in the direction of the three-sided (44) is transferred to the heating direction for a predetermined time, the method of preventing foreign matter seizure of the three-sided, characterized in that consisting of a process to return to the original. According to claim 1, wherein when the operation switch and the water flow switch is 'on' while counting the 'off' time of the water flow switch and the operation switch in the counter 114, the count value of the predetermined time counted so far is canceled. And then counting again after the water flow switch is 'off' again or after the operation switch is 'off'. According to claim 1, When the water flow switch is 'on' while the direction of the three-way side 44 is switched in the heating direction for a predetermined time, the counter of the predetermined time being performed in the counter 114 cancels the three-way Method of preventing foreign matter sticking to the trilateral side, characterized in that immediately switching the side to the hot water side.