JPS5923950Y2 - gas combustion equipment - Google Patents

Description

[Detailed description of the invention] The present invention provides a gas water heater, a gas rice cooker, etc. with a solenoid valve and a In addition to intervening a set orifice, a flow rate is provided, and a binder is provided to merge the branched gas supply paths and guide them to one nooner. The burner input is configured in multiple stages (this can be changed).
Input can be changed in multiple stages simply by opening and closing the solenoid valve, and input can be changed in multiple stages by adjusting the opening of the flow rate adjustment valve.Compared to C-Fujimi, the input can be changed in multiple stages easily, reliably, forcefully, and accurately. The present invention relates to a gas combustion device that has the feature of being able to perform

In general, such gas-fired devices have l/) of 1, ton of l/)
If the input is small, there is a risk of poor fire transfer, so the minimum input of the multi-stage input stage should be set to a sufficient level, that is, the input necessary for good fire transfer at the time of ignition.・There was a problem where I could not shorten 1) too.

In addition, as known from Japanese Utility Model Application Publication No. 50-79039 (so-called slow ignition, in which input is gradually increased in conjunction with ignition in order to improve ignition performance), there are also existing ones equipped with a roof. However, even if it is possible to prevent ignition with excessive impulse and prevent the generation of soot due to ignition with excessive impulse, the ignition caused by ignition with a 31% smaller input Step 1) The occurrence of defects could not be avoided.

In view of these circumstances, the present invention aims to set the minimum impulse θ sufficiently low, while also achieving reliable, accurate, powerful, and long-lasting ignition and flame transfer performance. The purpose is to provide a combustion device.

The gas combustion device according to the present invention has a plurality of branching forces branched from one fuel supplying path 5, each of which has a solenoid valve and an orifice set to a different flow rate. In addition, a header is provided to merge the branch power supply paths and guide them to one burner, and the input of the burner can be changed in multiple stages by a combination of opening and closing operations of the plurality of electromagnetic valves. At the time of initial ignition, the device opens the solenoid valve of the branch gas supply path, which is set to an input that is larger than the branch gas supply path of the minimum implant 1 to allow normal fire transfer. The present invention is characterized in that a control mechanism is provided which controls the opening and closing of the plurality of electromagnetic valves as instructed in advance after a certain period of time has elapsed after ignition.

That is, according to the present invention, at the time of initial ignition, the solenoid valve of the branch gas supply path, which is set to an input that is larger than the branch gas supply path with the minimum input and allows normal fire transfer, is opened to start the ignition and fire. Since ignition can be performed using a specific input that is set to ensure normal and good transition, the minimum input of the multi-stage input stage is set to less than the input required for normal ignition. Also, it is possible to achieve reliable and normal ignition without poor flame transfer or soot generation.

Moreover, even though the input at the time of ignition is specified in this way, once the ignition is completed after a certain period of time has elapsed after ignition, multiple solenoid valves are automatically controlled to open and close as instructed in advance to achieve the desired result. Combustion is possible with the input of

Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 shows a gas water heater (an example of a gas combustion device) equipped with one main burner 5 and one pilot burner 5'.
The fuel gas supply system and fuel gas supply control system to both burners 5 and 5' are shown in FIG.

In this gas water heater, the gas supply path 7 to the pilot burner 5' is branched from the middle of the monolithic fuel gas supply path 1 to the main burner 5, and ('-1 the end of the fuel gas supply path 1 By branching two gas supply paths 2, 2 from and merging these two branched gas supply paths 2, 2,
A header 5A leading to the main burner 5 is provided.

In addition, in this gas water heater, a valve 8 that opens a gas supply port to the pilot burner 5' in the first stage operation and opens a gas supply port to the twin burner 5 in the second stage operation, and a water supply and hot water outlet system An automatic valve 11 that automatically opens the fuel gas supply path 1 based on detection of water supply and hot water by a cabana 10 installed in the main A pressure regulating governor 12 is provided to keep the supply pressure to the burner 5 constant, and orifices 4, 4 are provided in each of the branch gas supply passages 2, 2, and the solenoid valves 3.3 are set to different flow rates. In addition, a remote control device 13 is provided for both the solenoid valves 3, 3, so that the input of the main burner 5 can be changed to three stages by the combination of opening and closing of the two solenoid valves 3, 3. It is.

The remote controller 1 to the roll device 13 have three push buttons a1. a2. It has a3.

FIG. 2 shows an electric circuit for controlling the two valves 3, 3, and 51-1 indicates the remote control device 13.
The first normally open switches 5l-2 and 5L-3 are turned on when the first push button a1 is operated, and the first normally closed contacts 52-2 and 52-2 are turned off when the first push button a1 is operated. A second normally open contact that is turned on by operating the second push button a2 of the remote control device 13, 52-1, 52-
Reference numeral 3 denotes a second normally closed switch that is turned off when the second push button a2 is operated, and S3 is a third normally open switch that is turned on when the third push button a3 of the remote control device 13 is operated.

R1 is a first relay that is energized when both the first normally open switch 51-1 and one of the second normally closed switches 52-1 are in the ON state, and R2 is the second normally open switch 52-1. 2 and one first normally closed switch 51-2
The second relay R3, which is energized when both are in the ON operating state, is configured such that the third normally open switch S3, the other first normally closed switch 51-3, and the other second normally closed switch 52-3 are both in the ON operating state. This is a third relay that is energized and activated when it is in the ON operating state.

rl-1 is connected in parallel to the first normally open switch 51-1, and is turned ON by the energization of the first relay R1, so that the one second normally closed switch 52-1 is turned ON. The normally open first relay contact r2-2, which maintains the energization of the first relay R1 as long as possible, is connected in parallel to the second normally open switch 52-2, and is turned ON by the energization of the second relay R2. When activated, the one first normally closed switch 5
A normally open second relay contact r3-3 maintains the energized operation of the second relay R2 as long as R1-2 is in the ON operation state.
is connected in parallel to the third normally open switch S3, and is turned on by the energization of the third relay R3, as long as the other two normally closed switches 5l-3 and 52-3 are both in the ON state. , is a normally open type third loop contact that maintains the energizing operation of the third relay R3.

rl is turned on by the energizing operation of the relay R1, and the signal of one solenoid valve 3 (hereinafter, to be distinguished from the other solenoid valve is set to 3-1, and the signal of the other solenoid valve is set to 3-1). 2
Make it.

) The first 1J contact for normally open valve opening operation that is energized;
r2 is a normally open type valve opening second relay contact which is turned on by the energization of the second relay R2 to energize the other solenoid valve 3-2; r3-1 is the contact of the first normally open valve; It is connected in parallel to the switch 51-1 and the first relay contact r1-1, and is turned on by the energization of the third relay R3, so that the one second normally closed switch 52-1 is in the ON state. As long as the normally open third relay contact r3-2 that maintains the energized operation of the first relay R1 is connected in parallel to the second normally open switch 52-2 and the second relay contact r2-2, A normally open type third relay contact that is turned on by the energization of the third relay R3 and maintains the energization of the second relay R2 as long as the first normally closed switch 51-2 is in the ON state. be.

FS is a flow switch that detects the supply in the fuel gas supply path 1 and is automatically turned on; RO is a relay that is energized and activated when the flow switch FS is turned on; T;
is a timer.

ro is a normally open type relay contact which is turned ON by the energization of the above Ro and energizes the timer T; tl is connected in parallel to the first relay contact r1 for opening the valve; ON until a certain period of time has passed after activation of
A normally closed timer contact t2, which is in the operating state and energizes the one electromagnetic valve 3-1 and turns off after a certain period of time, is the second relay contact r2 for opening the valve.
The solenoid valve 3-2 is connected in series with the timer T, and remains in the OFF operating state until a certain period of time has elapsed after the timer T is activated, and prevents the energizing operation of the other solenoid valve 3-2, and turns ON after the elapse of a certain period of time. This is a normally open timer contact.

The orifice 4 on the side of the branched gas supply path 2 in which one of the solenoid valves 3-1 is interposed is set to a flow rate that allows optimal ignition.

Now press button a1. a2. When a3 is selectively operated, the normally open switch 51-1 or 52-2 or S3 is turned on, and the j-ray R1, R2, or R3 is energized, and the relay contacts r1-1. r1, or r2-2. r2 or r
3-3.

r3-1 and r3-2 are turned ON and relay R is activated.
1, R2, or R3 is energized, and one solenoid valve 3-1, the other solenoid valve 3-2, or both 3, . 3, is energized and activated.

When gas supply is started in this state, flow switch F
S turns on, RO turns on, and relay contact ro
turns ON, timer T operates, and normally closed timer contact t1
Until the normally open timer contact t2 turns ON, the first solenoid valve 3-1 is energized regardless of whether the first relay contact r1 for valve opening is ON or OFF. Regardless of whether the two relay contacts r2 are turned on, the other solenoid valve 3-2 is de-energized.

Therefore, until a certain period of time has elapsed after the flow switch FS is turned on, gas is supplied to the burner 5 with the input that opens only one solenoid valve 3-1, and during this time, the burner 5 is ignited. , ignition can be performed reliably and well.

Then, after a certain period of time has elapsed, the normally closed timer contact t1 turns OFF, and at the same time the normally open timer contact t2 turns ON.
Operate.

In this state, if the first push button al is operated first, the first relay contact r1 for opening the valve in the ON state will cause one solenoid valve 3-1 to open regardless of the OFF operation of the normally closed timer contact t1. If the energization continues and the second pressed seedling a2 is operated first, the O of the normally closed timer contact t1
The FF operation cuts off the current to one of the solenoid valves 3-1, and the normally open timer contact t2 turns on.
If the other solenoid valve 3-2 is re-energized via the second valve opening relay contact r2 which is in the operating state, and if the third push button a3 is further operated, the one solenoid valve 3
-1 continues to be energized, and the other solenoid valve 3-2 is energized again.

In this manner, the gas water heater opens one of the solenoid valves 3-1 at the time of initial ignition, and after a certain period of time has elapsed after the ignition, the solenoid valves 3-1, .
3-2 has a control mechanism 6 that controls opening and closing.

[Brief explanation of the drawing]

The drawings show an embodiment of the gas hot smoking device according to the present invention.
The figure is a fuel gas supply and supply control system diagram, and Figure 2 is:
It is a control electric circuit diagram. 1... Fuel power supply path, 2... Branch gas supply path, 3... Solenoid valve, 4... Orifice, 5... ... Burner, 6... Control mechanism.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of branch gas supply paths 2 branched from one fuel gas supply path 1, each with a solenoid valve 3...
and orifice 4 set to different flow rates...
・In addition, each branch gas supply path 2...
Header 5 that merges ... and leads to one burner 5
A is provided, and the input of the burner 5 can be changed in multiple stages by combining the opening and closing operations of the plurality of solenoid valves 3. Branch gas supply path 2 with minimum input during ignition
A larger inflator that allows for normal fire transfer. The electric stone pole valve 3 of the branch gas supply path 2 set to ignition is opened, and at a certain period of time after its ignition, the plurality of electric stone drum valves 3...・
... A control mechanism 6 is installed to control opening and closing (this is a power combustion device).