JPH0141086Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a one-touch operation type instantaneous gas water heater that is used for commercial or home use.

BACKGROUND OF THE INVENTION This type of stop-start instantaneous gas water heaters that have been commonly used in the past are only capable of supplying hot water at a desired temperature, and it has been impossible to obtain only water from the water heater.

Purpose of the invention Therefore, this invention provides a stop-off type instantaneous gas water heater which is convenient and useful in actual use as it is also possible to discharge only water from the water heater.

Structure of the device The structure consists of a single push-button operation button 1 for igniting, dispensing, extinguishing, and stopping hot water, and a dial temperature control knob 2 for adjusting the hot water temperature by increasing or decreasing the amount of water supplied to the heat exchanger. In a one-touch operation type instantaneous gas water heater that is superimposed on the same axis, a convex cam 4 is attached to a gear mechanism A that interlocks a dial temperature control knob 2 and a temperature control valve V installed in a water supply channel 3. The convex cam 4 and the other end of the opening/closing lever 6, which is pivotally supported in relation to the pilot valve 5 of the diaphragm type opening/closing valve _V1 , whose one end is installed in the water supply channel 3, are connected to a predetermined "water only" valve. Only when the temperature control knob 2 is rotated to the set position, the other end of the opening/closing lever 6 rests on the convex cam 4 and opens the pilot valve 5, thereby making it possible to discharge only water from the water heater. A hot water supply operation mechanism C is provided with a regulating projection 27 connected to the operation button 1 to lock the hot water supply operation and the water only operation using the operation button 1 and the temperature control knob 2 so that the other operation cannot be performed while one operation is being performed.
This invention relates to the invention of a stop-type instantaneous gas water heater that is installed in the connecting rod 26 to eliminate erroneous operation and improve safety and usability.

Embodiment An embodiment of the stop-type instantaneous gas water heater according to this invention will be described in detail below based on the drawings. In the drawings, 1 is a single push-type operation button;
When the operation button 1 is moved forward by a certain stroke a by the first push operation by the stroke control mechanism D described later, the appliance tap V ₂ is opened and the electromagnetic safety valve V ₃ is held open via the hot water supply operation mechanism C described later. Then, the pilot burners P ₁ and P ₂ are ignited (see the ignition positions in Figures 3 and 6), and when the pressing force from the push button operation is released, it automatically moves back by a certain stroke b and strokes to that position. Locked by control mechanism D, diaphragm type on-off valve _V1 is opened to start water flow to heat exchanger E, and the water supply pressure operates hydraulic response device F to supply gas to main burner G and ignite it. (3rd step)
(see the combustion position in Fig. 6 and Fig. 6), and when the second push operation is performed, the stroke control mechanism D moves forward by a certain stroke b' from the lock position to release the lock and release the pressing force caused by the push operation, which becomes constant. When it automatically retreats by stroke a' and returns to its original position, it closes the diaphragm type on-off valve V ₁ and stops the water flow to the heat exchanger E. At the same time, the main burner G and pilot burner P ₂ are extinguished and the hot water is turned off. (See the fire extinguishing position in FIGS. 3 and 6), and the above-mentioned push button operation enables ignition, hot water supply, extinguishing, and hot water supply operations such as stopping the hot water supply. The mechanism D for controlling the forward and backward strokes a, b, b', and a' of the operating button 1 includes a press rod 7 integrated with the operating button 1 that is slidably inserted into the cylindrical body 9 of the fixed bracket 8. 8 and a guide rod 10 integrated with the guide hole 11 bored in the operation button 1.
loosely inserted into the fixed bracket 8 and operation button 1.
A return spring 12 is interposed between the operation button 1 and the push rod 7 so that the operation button 1 moves linearly forward and backward along the guide rod 10. Advance and retreat strokes a, b and
A control groove 13 for regulating b' and a' is bored, and a control protrusion 14 having a restoring force attached to the fixed bracket 8 is fitted into the control groove 13 so as to be able to slide freely. 2 is a dial-type temperature control knob that adjusts the hot water temperature by increasing or decreasing the amount of water supplied to the heat exchanger E, and is fitted outside the operation button 1 so as to be freely rotatable while maintaining the same axis. Warm knob 2 is water supply channel 3
It is connected via a gear mechanism A to a temperature control valve V installed on the downstream side. The temperature control valve V is a sliding type consisting of a combination of a fixed valve plate 15 and a movable valve plate 16, and a throttle hole 16a formed in the movable valve plate 16 overlaps with a through hole 15a formed in the fixed valve plate 15. By doing so, the water flow opening area can be changed and the amount of water supplied to the heat exchanger E can be adjusted. The movable valve plate 16 can be rotated relative to the fixed valve plate 15 by engaging the gear 19 and rotating the temperature control knob 2. The temperature control knob 2 has a fitting recess 21 provided on the temperature control knob 2 which is rotatably fitted into a support convex portion 20 provided on the fixed bracket 8, so that the gear 19 can be rotated freely.
At the same time, the rotation is kept concentric so that it can be rotated smoothly and reliably. Then, the fitting recess 2
A ball 22 is inserted into the temperature control knob 2, and the ball 22 is biased by a spring so as to be engaged with the ball 22 inserted into the fixed bracket 8. The setting positions of ``high temperature,'' ``low temperature,'' and ``water only'' can be determined reliably. Reference numeral 23 denotes a pressing spring for maintaining the anastomotic state of the movable valve plate 16 to the fixed valve plate 15. 4 is a convex cam installed in a gear mechanism A that interlocks the dial type temperature control knob 2 and the temperature control valve V; It is formed on the cam plate 24. Note that this convex cam 4 may be provided on the gear 18 itself. 6 is an on-off lever, one end of which is a diaphragm on-off valve.
The other end is connected to the pilot valve 5 of V ₁ , and the other end is connected to the convex cam 4 so that it rests on the convex cam 4 only when the temperature control knob 2 is set to a predetermined "water only" position. Related Axis 25
It is pivoted so that it can be rotated back and forth within a certain angular range. That is, the engagement groove 6a provided at one end of the opening/closing lever 6 is connected to the valve shaft 5a of the pilot valve 5.
The engagement groove 6a is loosely fitted into the opening/closing lever 6 and moves from side to side with the reciprocating rotation of the opening/closing lever 6, so that the engagement groove 6a engages with the engagement protrusion 5b fixed to the valve shaft 5a. At the same time, the protrusion 6b provided on the other end of the opening/closing lever 6 rides up on the convex cam 4 only when the temperature control knob 2 is set to the "water only" position, and the opening/closing lever 6 is moved clockwise. It is designed to rotate. Note that the opening/closing lever 6 can be properly operated by biasing the opening/closing lever 6 counterclockwise by a torsion spring. B is a locking means provided on the hot water supply operation mechanism C using the opening/closing lever 6 and the operation button 1, and a regulating protrusion 27 provided on the inner end of the protrusion 6b at the other end of the opening/closing lever 6 and the link 26 of the hot water supply operation mechanism C. hits during hot water supply operation and prevents clockwise rotation of the opening/closing lever 6, making it impossible to rotate the temperature control knob 2 to the "water only" position, and setting the temperature control knob 2 to the "water only" position. During rotation and water only operation, the convex cam 4 pushes up the protrusion 6b at the other end of the opening/closing lever 6, and the regulating protrusion 27 of the connecting rod 26 is engaged with the inner end of the protrusion 6b at the other end. A regulating protrusion 27 is disposed at a position that disables the operation of the hot water supply operation mechanism C. Therefore, the hot water supply operation and the water only operation using the operation button 1 and the temperature control knob 2 are interlocked so that while one operation is being performed, the other operation cannot be performed. Also,
C is a hot water supply operation mechanism for interlocking the operation button 1 with the appliance valve V ₂ installed in the gas supply channel 28 and the diaphragm type on-off valve V ₁ installed in the water supply channel 3, and the operation mechanism is pivotably installed to allow reciprocating rotation. Drive piece 29 of arm 29
a is brought into contact with the pressing rod 7 of the stroke control mechanism D, and the operating piece 29b of the operating arm 29
In this case, the operating arm 29 is operated by the predetermined forward and backward strokes a, b, b', a' of the operating button ₁ in association with the valve shaft 30 of the appliance tap V ₂ and the switches S ₁ and S 2 for ignition and extinguishing. By reciprocating rotation, it is possible to operate the appliance plug V ₂ , the electromagnetic safety valve V ₃ interlocked therewith, and the respective switches S ₁ and S ₂ . In addition, the hook rod 32 is attached to the passive frame 31 which is pivoted so as to automatically return to the original position.
is biased and pivoted to rotate clockwise in FIGS. 3 and 4, and the passive frame 31 is connected to the operating arm 29 by the connecting rod 26, and the pilot valve of the diaphragm type on-off valve _V1. The engagement protrusion 5b provided on the valve shaft 5a of No. 5 has a hook rod 32 that rotates up and down within a certain angle range together with the passive frame 31, so that the engagement hook 3 at the tip thereof is
2a is engaged and disengaged to open and close the pilot valve 5. 5c is a spring that urges the pilot valve 5 in the closing direction. Diaphragm type on-off valve
V ₁ is opened and closed by a pilot valve 5 that opens and closes its valve hole 33 to allow water to flow to the heat exchanger E and to stop the water flow. Water pressure response device F
The system controls the amount of gas supplied to the main burner G in proportion to the amount of water supplied to the heat exchanger E by opening and closing a hydraulic automatic gas valve 34 in conjunction with a diaphragm 35 that varies depending on the water supply pressure. V ₄ is a gas governor valve, and V ₅ is a capacity switching valve, which can be switched using an operating knob 36. _V6
is a valve that supplies and disconnects gas to the primary pilot burner _P1 , and is provided so as to operate in conjunction with the appliance valve _V2 . 37 is a bench lily portion of the water supply channel 3, and 38 is a connecting pipe that communicates the bench lily portion 37 with the secondary side of the diaphragm chamber 39 of the hydraulic response device F, and is equipped with a slow valve _V7 . 40 is a water supply pipe, 41 is a hot water faucet, _V8 is a drain valve, 42 is an outer shell of the container, Tc is a thermocouple, and M is an electromagnet.

In the above embodiment, the operation button 1 and the temperature control knob 2 are installed separately on the same axis, but by fixing them together, the temperature control knob 2 (operation button 1) may be attached to the gear 19 such that its rotation is restricted and it is movable in the axial direction.

In the above configuration, when hot water is supplied by pushing the operation button 1 and rotating the temperature control knob 2, the temperature control knob 2 is operated in the range of "hot water", "high temperature", and "low temperature" (for example, in the range of 180 degrees). The amount of hot water dispensed and the temperature of hot water dispensed can be adjusted by rotating, and since the operation button 1 is in the ignition position or combustion position during hot water supply, the regulating protrusion 27 of the connecting rod 26 is located at the third and fourth positions.
In the figure, the protrusion 6 at the other end of the opening/closing lever 6 moves to the left.
Since the inner end of the opening/closing lever 6 is displaced to the position where it touches, clockwise rotation of the opening/closing lever 6 is prevented, and the temperature control knob 2 cannot be rotated to the "water only" position.

Next, when the operation button 1 is pushed back to its original position and hot water supply is stopped, the operation button 1 is in the extinguishing position, so the hot water supply operation mechanism C returns to the extinguishing and hot water supply stop position. The regulating protrusion 27 moves to the right together with the connecting rod 26 and is displaced to a position where the inner end of the protruding part 6b at the other end of the opening/closing lever 6 does not come into contact.
Therefore, the opening/closing lever 6 can be freely rotated clockwise, so when the temperature control knob 2 is rotated to the "water only" position, the convex cam 4 is exposed to the convex portion 6b at the other end of the opening/closing lever 6. The lifting opening/closing lever 6 is rotated clockwise by a certain angle, and one end of the engaging groove 6a engages with the engaging protrusion 5b of the valve shaft 5a of the pilot valve 5, and the pilot valve 5 is connected to the spring 5c. In response, it is moved to the right and separated from the valve hole 33 of the diaphragm type on-off valve V ₁ to open the diaphragm type on-off valve V ₁ and only water is discharged from the water heater. The discharge amount of only water can also be adjusted in a range from "low temperature" to "only water" (for example, in an angle range of 25 degrees), and during this time the protrusion 6b remains on the protrusion cam 4. During the water-only operation, the regulation protrusion 27 of the connecting rod 26 gets caught on the protrusion 6b at the other end of the opening/closing lever 6, making it impossible for the hot water supply operation mechanism C to ignite and move to the hot water outlet position. It is not possible to ignite or dispense hot water by pushing operation button 1.

Effects of the invention As explained above, this invention makes it possible to not only supply hot water but also discharge only water in a stop-off instantaneous gas water heater. This makes it easier to use, and the operation buttons and temperature control knobs are used for hot water supply and water only operation, and the lock prevents the other operation from being performed while one operation is in progress, eliminating erroneous operations and ensuring safe use at all times. It is also extremely easy to use.

[Brief explanation of the drawing]

The drawings show an example of the stop-start instantaneous gas water heater according to this invention, and Figure 1 is an external front view;
Figure 2 is a developed sectional view of the internal structure, Figure 3 is a cutaway plan view showing details of the main parts, Figure 4 is a front view of the same, and Figure 5 is a cross-sectional view of the internal structure.
The figure is a front view showing the relationship between the operation button and the temperature control knob, and FIG. 6 is a diagram showing the forward and backward strokes of the operation button. 1...Operation button, 2...Temperature control knob, V...
Temperature control valve, 3... Water supply channel, A... Gear mechanism, 4...
Convex cam, V ₁ ...Diaphragm type on-off valve, 5...
...Pilot valve, 6...Opening/closing lever, B...Lock means, C...Hot water supply operation mechanism.

Claims (1)

[Scope of utility model registration request] A single push-button operation button 1 for igniting, dispensing hot water, extinguishing, and stopping the dispensing of hot water, and a dial-type temperature control knob 2 for adjusting the temperature of dispensing hot water by increasing or decreasing the amount of water supplied to the heat exchanger are provided on the same axis. A diaphragm type opening/closing device in which a convex cam 4 is provided on a gear mechanism A that interlocks the dial type temperature control knob 2 and a temperature control valve V installed in the water supply channel 3, and the convex cam 4 and one end are provided in the water supply channel 3. The other end of the opening/closing lever 6 is opened only when the other end of the opening/closing lever 6, which is pivotally supported in relation to the pilot valve 5 of the valve _V1 , is set by rotating the temperature control knob 2 to a predetermined "water only" position. is convex cam 4
The control protrusion is connected so that the pilot valve 5 can be opened by climbing on the water, and is also locked so that when one operation is being performed, the other operation cannot be performed during hot water supply operation and water only operation using the operation button 1 and temperature control knob 2. 27 is provided on the link 26 of the hot water supply operation mechanism C operated by the operation button 1.