JP2508854Y2 - Original stop type gas water heater - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a main-stop type gas water heater in which gas and water are turned off and then hot water is stopped by pressing one push button.

(Prior Art) An embodiment of a conventional hot water heater OA will be described below with reference to FIG.

Reference numeral 011 is a push button in which a button knob 015 is inserted so as to be movable back and forth.
The lever 0141 of the lever device 15 rotates via the
The ignition pilot burner 023 is ignited through the through hole 061 with 0 being at the forward end, and then the normal fire pilot burner is ignited. After that, the operating shaft 016 is positioned at a slightly retracted position by a not shown heart cam or the like via a pin or the like, the operating shaft 061 is also retracted slightly, and the ignition pilot burner 023 is extinguished. On the other hand, the pilot type water faucet 3 is pressed through the lever 0142 and kept in the closed state at the forward end, and then the pressing is released to open the water washing 3 at a slightly retracted position and lock it at that position, and at the same time, the main water valve 32 is opened. Water is supplied by opening the main water valve 32, the water pressure response device 9 advances, the automatic gas valve 10 is opened, and the main burner 13 is ignited and burned to start hot water discharge. When the push button 015 is pressed again, the above lock is released, the operating shaft 016 is returned and returned, the pilot type water faucet 3 and the gas shutoff valve 06 are both closed, and hot water supply is stopped.

(Problems to be solved by the invention) As is apparent from the above-mentioned conventional example, the push button
The pressing movement of the actuating shaft 016 of 011 simultaneously opens and closes the gas shutoff valve 06 and the main water valve 32, and these are performed via a series of interlocking levers 0141 and 0142. The large pressing force was a hindrance to the light touch operation.

(Means for Solving the Problems) The main water heater of the first aspect of the present invention for solving the above problems is a main burner that burns fuel gas, and the feed heat is heated by the combustion heat of the main burner. A heat exchanger, a gas valve in a gas flow passage connected to the main burner, a water valve in a water supply passage connected to the heat exchanger, and a push button on the front surface, and the gas is pressed by pressing the push button. In an original stop type water heater that opens hot water by opening a valve and the faucet, an operating cylinder is superposed inward and outward concentrically with the push button, and the inner operating cylinder and the outer side are ignited by the ignition pressing operation of the push button. One of the operating cylinders is advanced and the other is retracted, and the other one is retracted by the next fire extinguishing operation and the other is advanced. Interlocking with the water valve and energizing one of the two valves in the valve closing direction. On the other hand, the gist is to provide a spring for urging the valve opening direction.

The hot water heater according to claim 2 is provided with a thermocouple type electromagnetic safety valve in the gas passage, and a push solenoid is mounted opposite to the safety valve, and the displacement detection signal of the water pressure response device or the like is used to detect the displacement. The gist is that the push solenoid is operated and advanced to assist the opening of the electromagnetic safety valve.

(Operation) In the main water heater of the present invention having the above-mentioned configuration, the push button is provided with the inner and outer actuating cylinders that concentrically and alternately move forward and backward, and one of the actuating cylinders is linked to the gas valve and the other is linked to the water valve. Therefore, the ignition push operation of the push button causes one of the operating cylinders to move forward and open one valve against the spring that urges in the valve closing direction, and the other operating cylinder retracts to release the closing of the other valve. That is, the valve is automatically opened by the spring force biased in the valve opening direction. In this way, the gas valve and the water valve are opened at the position where the push button is pressed, and ignition and hot water discharge are performed simultaneously.

In addition, when the fire button is pressed to extinguish the fire, the operating cylinder operates in the opposite direction, and both valves are closed. In this way, the pressing force of the push button is sufficient to resist the urging force of one of the springs, so the pressing operation force is halved. Further, the push solenoid 12 operates in synchronization with the electromagnetic safety valve 4, and the suction opening of the safety valve 4 is instantaneously performed. Therefore, the pressing force of the push button 11 when tapping hot water can be greatly reduced.

(Embodiment) This embodiment will be described below with reference to the drawings in FIGS. 1 to 10.

The water supply passage 1 is provided with a pilot-type faucet 3, the pilot valve 31 of the pilot-type faucet 3 is opened, the main water valve 32 is opened, and water is passed to the heat exchanger 5. An automatic gas valve 10 is provided in the gas passage 2, and the gas valve 10 is opened by displacing it to the left in FIG.

A gas on-off valve 6 is installed on the upstream side of the automatic gas valve 10, a thermoelectric electromagnetic safety valve 4 is disposed on the upstream side of the gas on-off valve 6, and a push solenoid 12 for assisting in pressing the gas valve 41 of the safety valve 4 is provided. A push shaft 121 arranged and connected to the solenoid 12 is installed to face the gas valve 41. The gas on-off valve 6 has a return spring 61 for biasing the gas on-off valve 6 in the left-right direction and a spring having a spring load slightly larger than that of the return spring 61.
62 is inserted between the spring bearing and the spring bearing, and the gas on-off valve 6 is opened in the equilibrium state of the return springs 61, 62. 11 is a push button device, and the button knob 15 of the push button 11
At 0, a pressing rod 151 and an operating shaft 169 fitted and fixed to an inner operating cylinder 16 to be described later are pressed via a pressing cylinder 153 to be described later, and the gas is opened and closed by rotating the connecting lever 141 by being pressed by the pressing forward movement. The valve 6 is closed. Further, the pilot valve 31 of the pilot-type water faucet 3 is opened and the main water valve 32 is opened via the connecting levers 142 and 143 that are pressed and rotated by the outer operating cylinder 17 that is inserted coaxially with the operating cylinder 16. It (Second
See the state indicated by the chain line in the figure. ) Next, the push button 11 is rotated by rotating the button knob 150 to rotate the rotary cylinder 21 and the main body 110, which will be described later, whose rotation is restricted by the pin 22, and rotate the temperature control valve 8 via the gear device 7. The amount of water flowing to the heat exchanger 5 or the amount of mixing water is adjusted. Similarly, as described later, the push button 11 is pushed forward and the outer working cylinder 17 is moved forward and the inner working cylinder 16 is retracted and returned (see the state shown in FIG. 1 or the chain line in FIG. 2). The inner working cylinder 16 and the outer working cylinder 17 are alternately advanced and retracted. The button knob 150 has a rotary cylinder 21 integrally fixed to the main body 110 and a pin 22, and the rotation of the rotary knob 21 is restricted by the pin 22 and is attached to the mounting flange 20 so as to be movable in the axial direction. It is attached to the mounting flange 20 via the mounting flange 20 such that it can rotate within a certain angle range and its axial movement is restricted. Further, the outer working cylinder 17 and the inner working cylinder 16 are concentrically slidably fitted to the main body 110, and are retracted (returned by the return springs 170 and 160 inserted between the main working 110 and the main working 110). The upper part of the drawing is the same as the upper part of the drawing. The same shall apply in the following description), and either the outer working cylinder 17 or the inner working cylinder 16 is arranged to come into contact with a pressing cylinder 153 described later. The outer working cylinder 17 and the inner working cylinder 16 are connected to the main body 110 by a spline 111.
The angle is regulated to the indexing angle described below. Further, a coil having both a spring set load and a spring constant smaller than that of the return spring 160 between a rear bottom surface (not shown) of the pressing cylinder 153 (an upper end in FIG. 3, the same applies hereinafter in the text) and a rear end of the inner operating cylinder 16. The spring 158 is inserted and the coil spring 1
The indexing teeth 156 of the pressing cylinder 153 and the indexing teeth 211 of the rotary cylinder 21 are inserted by the elastic force of 58 so as to always maintain a contact relationship. Engagement pieces 167 are formed on the upper part of the inner operation cylinder 16 so as to project in the radial direction at intervals of 90 degrees, and similarly, engagement legs 172 are formed at the rear end of the outer operation cylinder 17 at the same intervals of 90 degrees. 167 and engaging leg 1
72 is molded so as to engage between the splines 111, and the engaging pieces 167 and the engaging legs 172 are alternately inserted into the splines 111 alternately.

The outer ends of the engagement pieces 167 and the engagement legs 172 are inclined in the circumferential direction and are formed to have substantially the same shape and dimension. Slope
A pressing cylinder 153 having a projecting piece 154 whose tip end has substantially the same inclined surface 155 that engages and disengages with 168 and 173 is kept in contact with a coil spring 158. Angle-shaped index teeth 156 are circumferentially engraved on the rear bottom surface of the pressing cylinder 153, and similarly, the same angle-shaped index teeth 156 as the index teeth 156 are formed on the front end bottom surface of the rotary cylinder 21. The extraction teeth 211 are engraved, and the crests and troughs of the indexing teeth 156 can be engaged with the troughs and crests of the indexing teeth 211, and the pressing cylinder 153
Can perform rotation angle indexing for the rotary cylinder 211 by one pitch, that is, by 1/8 turn (for 45 degrees). Further, the inclined surface 155 of the projecting piece 154 abuts and engages with the inclined surface 168 of the engaging piece 167 or the inclined surface 173 of the engaging leg 172 fitted between the splines 111 to engage the engaging piece 167 or the engaging leg. The inner working cylinder 16 or the outer working cylinder is rotated by pushing and moving forward the 172.
It is possible to rotate while pressing 17 down. Further, the pressing cylinder 153 is provided with the indexing teeth 21 at the return position of the button knob 150.
1 and the indexing tooth 156 are engaged with each other, and the spline 111 is arranged such that the end part thereof partially overlaps with the engaging piece 167 or the engaging leg 172 in the circumferential direction.
Angled with respect to. (See FIG. 6A.)
An actuating shaft 169 is fixed to the inner actuating cylinder 16 with its tip protruding. A T-shaped through hole 175 is formed in FIG. 7 in which a stopper 112, which will be described later, is inserted into and engaged with a substantially intermediate portion of the main body 110 so as to be able to advance and retract in a substantially intermediate portion of the outer actuating cylinder 17 in FIG. And the bottom surface of the through hole 175 (in FIG. 4).
The same applies in the text below. ) 177 and the bottom surface of the stopper 112 face each other and come into contact with each other, and the outer operating cylinder 17 is urged by the return spring 170.
Is regulated to a predetermined forward position. In addition, an inverted T-shaped through hole 176 is formed in FIG. 7 through which a stopper 113 described later, which is inserted so as to be able to advance and retreat in the radial direction, penetrates on the opposite side of the stopper 112, and both sides of the through hole 176 are formed. A wedge 178 with which the projection 115 at the tip of the stopper 113, which becomes thinner from the outer diameter side in the tip direction, engages is formed in the portion, and the inner working cylinder 161 is moved forward (moved downward in FIG. 5; hereinafter the same in the text). .), The protrusions 115 formed on the rear sides of the stoppers 113 on both sides are pressed, and the stoppers 113 are retracted. A locking hole 163 is formed in a side portion slightly closer to the front end than the middle of the inner operating cylinder 16, and a projection 117 having a tapered central portion on the front end portion of the stopper 113 is fitted and engaged. The lower surface of FIG. 5 (in FIG. 5; the same applies in the following text) and the lower surface of the protrusion 117 of the stopper 113 come into abutting engagement with each other, so that the inner working cylinder 16 urged by the return spring 160 moves to a predetermined forward position. Regulated. And the wedge 178 is the protrusion 1
When the wedge 178 is moved downward, the stopper 113 is retracted back against the return spring by the downward movement of the wedge 178, and the lower surface of the protrusion 117 of the stopper 113 and the lower surface of the locking hole 163 are unlocked. , The inner actuating cylinder 16 is returned and retreated by the spring 160. Further, the inner working cylinder 16 is formed with a taper portion 162 with a tapered tip, and similarly when the outer working cylinder 17 moves to the vicinity of the forward end, the projection 114 at the tip of the stopper 112 fits into the through hole 175. The lower surface of the protrusion 114 and the lower surface 177 of the through hole 175 are in abutting engagement with each other, so that the outer operating cylinder 17 is positioned at the forward position. In short, when the outer working cylinder 17 is pushed forward, it is locked when it reaches a predetermined position near the forward end and the stopper of the inner working cylinder 16 is locked.
When the inner working cylinder 16 is retracted by releasing the lock by 113 and the inner working cylinder 16 is pushed and advanced in exactly the same manner, it is fitted and locked when it reaches a predetermined position near the forward end, and then the outer working cylinder.
17 is unlocked by the stopper 112 and moves back and forth. For the above push forward operation, the button knob 15
It is performed every time 0 is repeatedly pressed.

Next, an outline of the operation of the gas water heater in this embodiment will be described.

The engaging leg of the outer operating cylinder 17 that pushes the button knob 150 and pushes the push cylinder 153 forward with the push rod 151 to return to the backward direction.
Abutting on the inclined surface 173 of 172, gradually contacting the 154 projecting spline 111 while slip-rotating a little larger than a half pitch circumference (about 1/16 circumference) to the left in FIG. (Refer to the state shown in FIG. 6B from the state shown in FIG. 6A.)
After that, the outer operating cylinder 17 is pushed forward, and the protrusion 115 of the stopper 113 is pushed by the wedge 178 and gradually retracted to push the stopper 11 forward.
The fitting lock of 3 is released, and the inner working cylinder 16 is retracted by the return spring 160. (Refer to the state shown in FIG. 4 from the state shown in FIG. 5) The protrusion 114 of the stopper 112 is the bottom surface 1 of the through hole 176.
It is fitted and engaged with 75 and positioned at the forward position. After that, the pressure is released and the spring 160 is returned to the inner operating cylinder 16 and the pressing cylinder 15.
3. The button knob 150 is retracted and returned via the push rod 151. Here, the pressing cylinder 153 maintains the abutting engagement relationship with the button knob 150 by the urging force of the return spring 160, and the indexing tooth 156 has the indexing tooth 156.
The indexing tooth 156 is slid on the slope of the indexing tooth 211 at an angle slightly advanced by more than about half the pitch of the 211 (see the state shown in FIG. 6B and C).
3 is further rotated and fed by an angle slightly smaller than a half pitch circumference, and the inclined surface 155 is positioned so as to slightly overlap the inclined surface 168 of the engaging piece 167 (shown by the solid line in FIG. 6C). Refer to the state shown in Fig. 2 from the state.). The outer actuating cylinder 17 is moved forward to open the pilot-type faucet 3 via the connecting levers 142 and 143 to open the main water valve 32 to pass water to the heat exchanger 5. The diaphragm 91 moves left in FIG. 1 to open the automatic gas valve 10. On the other hand, since the inner actuating cylinder 16 (actuating shaft 169) retracts, the connecting lever 141 also returns, so the gas on-off valve 6
Is retracted by the urging force of the return spring 62 and the gas on-off valve 6 is opened. The switch 93 is turned on by the left movement of the operating shaft 92, the push solenoid 12 is excited and pushed forward by the on signal to push open the electromagnetic safety valve 4, and at the same time, the igniter is turned on by the on signal of the switch 94 which is turned on. Spark from the spark plug 19 through the main burner 13,
The gas sent to the pilot burner 18 is ignited and combusted at the same time to de-energize the push solenoid 12 to demagnetize the solenoid 12, and after a certain time, the igniter is deactivated and the spark is stopped. The electromagnetic safety valve 4 is kept open by the thermoelectromotive force of the thermocouple heated and heated by the pilot burner 18 or the main burner 13.
Heating by 13 is performed and hot water is discharged.

The hot water temperature is adjusted by rotating the button knob 150, rotating the main body 110, and rotating the temperature adjusting valve 8 via the gear unit 7 to adjust the amount of water. Button knob again
When 150 is pressed, the inner operating cylinder 16 is pushed forward, the inclined surface 155 abuts the inclined surface 168 of the engaging piece 167, and is rotated in the left direction in FIG. 6 by an angle slightly smaller than about a half pitch circumference. In the same manner as described above, the protrusion 154 is brought into contact with the spline 111 to push the inner working cylinder 16 forward, and the tapered portion 162 pushes and retracts the protrusion 114 of the stopper 112 to release the fitting lock of the stopper 112. Outer working cylinder 17
To retreat (see the state shown in FIG. 4 to the state shown in FIG. 5). Also, the inner working cylinder 16 has a protrusion near the forward end.
The 117 is fitted into the locking hole 163 and locked. Meanwhile, pressing cylinder
153 is further rotated by about a half pitch as described above, and the inclined surface 155 is positioned so as to slightly overlap the inclined surface 173 of the engaging leg 172 and returns to the original state (see the state shown in FIG. 6A). . Then, the gas on-off valve 6 is returned via the connecting lever 141 to advance and close against the urging force of the spring 62 spring spring to shut off the gas supply to the gas burner 13 and the pilot burner 18, and the connecting levers 142 and 143. Then, the pilot type water faucet 3 is closed and hot water is stopped.

(Effects of the Invention) Ignition and hot water are simultaneously performed at the position where the push button is pressed, and the pressing force in the pressing operation of the push button resists the urging force of either spring provided in the gas valve or the water valve. The pressing force to be applied is sufficient, the pressing operation force is halved, and the operability is improved.

Furthermore, the push solenoid provided opposite to the electromagnetic safety valve assists the adsorption opening of the electromagnetic safety valve at the time of ignition such as water flow, so that it is possible to instantly hold the electromagnetic safety valve open, so the push button can be pressed instantly. is there.

(Effects of Embodiment) The push button 11 shown in this embodiment can be advanced alternately by pressing the inner and outer actuating cylinders against the respective return springs, and the stopper 112 used as a locking device. , 113 is retracted by the tapered taper surface (wedge) formed on each actuating cylinder, the releasing force can be made small and the pressing force for unlocking is slightly reduced. It is advantageous that the push button can be applied to a switching button that alternately turns on and off the contacts of two limit switches, for example, and is easier to operate than a seesaw type or a sliding type that slides along a panel plate. It can be said that it is good.

[Brief description of drawings]

FIG. 1 is a schematic overall view showing an embodiment of the present invention, FIG. 2 is a schematic explanatory view showing an essential part of FIG. 1, and FIG. 3 is an exploded perspective view showing pushbuttons and members related to the pushbuttons. Fourth
5 and 5 are longitudinal sectional views for explaining the forward / backward movement of the operating cylinder by the push button, and FIG. 6 is a schematic enlarged development view for explaining the pressing operation of the operating cylinder by the button knob and the angle indexing operation,
FIG. 7 is an enlarged plan view and an enlarged vertical side view showing the outer operating cylinder and a side view of the through hole, FIG. 8 is an enlarged front view and an enlarged vertical side view showing the inner operating cylinder, and FIG. FIG. 10 is an enlarged plan view and enlarged front view showing an embodiment, FIG. 10 is an enlarged plan view and an enlarged front view showing one embodiment of a different stopper, and FIG. 11 is a schematic overall view showing a conventional example of a main stop type gas water heater. It is a figure. A: Original stop type gas water heater, 3 ... Pilot type faucet, 4
…… Electromagnetic safety valve, 6 …… Gas opening / closing valve, 9 …… Water pressure response device, 11 …… Push button, 12 …… Push type solenoid, 16
...... Inner cylinder (operating shaft 169), 17 …… Outer cylinder

Claims (2)

(57) [Scope of utility model registration request] 1. A main burner that burns fuel gas, a heat exchanger that heats feed water with combustion heat of the main burner, a gas valve in a gas flow passage that connects to the main burner, and a heat exchanger that connects to the heat exchanger. With a water valve in the water supply channel and a push button on the front,
In a water shut-off type water heater that opens hot water by opening the gas valve and the faucet by pressing the push button, an operating cylinder is superposed inward and outward concentrically with the push button, and the ignition push of the push button is performed. By operation, one of the inner working cylinder and the outer working cylinder moves forward while the other moves backward, and by the next fire extinguishing pressing operation, one of the working cylinder moves backward and the other moves forward. One of the cylinders is linked to the gas valve and the other is linked to the water valve,
A shut-off water heater, wherein one of the two valves is provided with a spring for urging in the valve closing direction and the other is provided with a spring for urging in the valve opening direction. 2. A thermocouple type electromagnetic safety valve is provided in the gas passage, and a push solenoid is mounted opposite to the safety valve.
2. The main stop type water heater according to claim 1, wherein the push solenoid is actuated forward by a displacement detection signal of a water pressure responding device or the like to assist in opening the electromagnetic safety valve.