JPH039379B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention mainly relates to an instantaneous water heater using a gas burner as a heat source.

(Prior Art) Conventionally, this type of water heater has a front surface of a water heater body that has a heat exchanger inserted inside a water channel that communicates a water inlet and a hot water outlet, and a heat source that heats the heat exchanger. At least one push-button type operation member is provided to control the operation of the hot water tap, and a temperature adjustment member for adjusting the temperature of the hot water obtained at the hot water tap is disclosed in, for example, Japanese Utility Model Publication No. 1095/1983. As is known, there is a bypass passage that bypasses a heat exchanger, a throttle valve is provided as a regulating member in the bypass passage, and the flow rate of water flowing through the bypass passage is adjusted by the throttle valve to adjust the hot water temperature. As seen in Publication No. 113442/1980, a device that adjusts the outlet temperature by adjusting both the amount of water that reaches the heat exchanger and the ability of the heat source to heat the heat exchanger, and furthermore, the amount of water or the ability of the heat source. There are known devices that adjust only one of the two.

(Problems to be Solved by the Invention) However, in such a case, for example, if we consider the case where the adjustment member is set to a high temperature range and the hot water is brought out to a high temperature in preparation for keeping coffee cups warm, high temperature sterilization, etc. When hot water is tapped during use, the tapped hot water becomes unnecessarily and unnecessarily high temperature, which is not preferable.

(Means for Solving the Problems) The object of the present invention is to obtain a water heater that eliminates the above-mentioned problems. The front surface of the water heater body, which has a heat exchanger and a heat source for heating the heat exchanger, is equipped with at least one push-button type or other operating member for controlling the operation of the water heater, and the temperature of the hot water obtained at the outlet is provided. What is claimed is: 1. A water heater comprising a temperature regulating member for regulating temperature, which operates when the regulating member is set to a high temperature range, and is equipped with a stopping member that stops the operating member from being operable.

(Function) In this case, when the adjusting member is set in the high temperature range, the restraining member works and the operating member cannot be operated, and in order to operate the operating member, the adjusting member must be set in the high temperature range. Requires an operation to cancel. This eliminates the inconvenience of hot water suddenly being discharged from the tap during use.

(Example) An example of the present invention will be described with reference to an example shown in the drawings. Figures 1 to 6 show an embodiment in which the temperature of hot water from the outlet is adjusted by adjusting the amount of water flowing into the heat exchanger.
A water boiler body has a heat exchanger 3 interposed in a water channel 2 that communicates a water outlet 2b with a water outlet 2b, and a heat source 4 for heating the water heater body. At least one push button type or other operating member 6 indicates a temperature regulating member provided on the front surface of the water heater body 1, and the one shown in the figure is equipped with a gas burner as the heat source 4, and the gas burner is composed of a main gas burner 4a, a constant flame burner 4b, and a starter burner 4c, and an electromagnetic safety valve 10 is provided in the gas supply passage 8 to the constant flame burner 4a and is held open by the electromotive force of a thermocouple 9 desired for the constant flame burner 4b.
The opening/closing valve 11 and the cabana valve 14 which responds to the water cabana 13 interposed in the water inlet side water channel 2 of the heat exchanger 3 are interposed, and the gas supply passages 15, 16 to the regular fire burner 4b and pilot burner 4c are provided. is branched from the downstream side of the on-off valve 11 provided in the gas supply passage 9, and a pilot valve 17 is further interposed in the gas supply passage 15. The electromagnetic safety valve 10, the opening/closing valve 11, and the pilot valve 17 are operated by a push rod 7 with a push mechanism 18 interposed therebetween, and the push rod 7 is moved from the starting position A to the final position B by the pushing mechanism 18. When the button is pressed and then released, it is locked at the intermediate position C, and when the button is pressed again, the lock is released and it automatically returns to the starting position A.

Note that 19 and 20 are switches that are interposed in a circuit (not shown) in which the electromagnetic safety valve 10 is forcibly held open at the time of ignition, and in an operating circuit (not shown) for the ignition line 36 desired for the pilot burner 4c. shows the switch. The waterway 2 connected to the heat exchanger 3 has a main valve 2 located upstream of the water governor 13.
2 and a throttle valve 23 located on the downstream side of the water governor 13, and the main valve 22 is a push rod 1 with a push lever mechanism 24 having the same configuration as the push push mechanism 18 described above.
Opening and closing operations are performed by 2. That is, the main valve 22 is opened only when the push rod 12 returns to the intermediate position C. The push rods 7 and 12 are connected to a common push button 25, and the push rod 7, the push rod 12, and the push button 25 constitute the operation member 5 described above.

To explain the hot water tapping operation using the operating member 5,
When the push button 25 is pressed, on the push rod 7 side,
Before the intermediate position C, the on-off valve 11 is pushed open and the switch 19 is switched to activate the forced holding circuit of the electromagnetic safety valve 11. Beyond the intermediate position C, the electromagnetic safety valve 10 is pushed open and the switch 20 is switched. A spark is obtained from the switching ignition plug 36.

For this reason, the starter burner 4c is ignited, and the permanent burner 4b is then ignited. When the push button 25 is released, the push rod 7 is moved by the spring 21.
It is flipped and locked in the middle position by the push push mechanism 18. On the other hand, on the push rod 12 side, the main valve 22
is pushed by the push rod 12 and moved to the terminal position B, and then when the pressure is released, the push rod 12 is repelled by the spring 22a and is locked at the intermediate position by the push push mechanism 24, and the main valve 22 opens. . This causes a flow of water to the tap outlet 2b side, which causes the water governor 13 to work and push open the governor valve 14. Therefore, gas is also supplied to the main burner 4a, which is ignited. Therefore, the heat exchanger 3 is heated by the main burner 4a, and hot water can be obtained at the tap water outlet 2b. To stop dispensing hot water, press the push button 25 to release the lock at the intermediate position C and return to the starting position A, and the main valve 11 of the heat source 4 becomes inoperable and the main valve 22 to the closed position. The water will recover and the hot water will stop flowing.

The above-mentioned temperature regulating member 6 is adapted to control the outlet temperature by controlling the amount of water flowing into the heat exchanger 3 by interlocking the throttle valve 23 with the regulating member 6.

To explain this in more detail, the adjustment member 6 is configured by providing a rack 30 integrally with a knob 27 that is slidable along a horizontally long transparent window provided on the front surface of the water boiler main body 1. The degree of throttling of the throttle valve 23 is adjusted by meshing with a pinion 29 provided on the valve rod 28 of the throttle valve 23.

The configuration up to now is not particularly different from what is conventionally known. The present invention is provided with a restraining member 32 that is activated and restrains the operating member 5 from being operable when the adjusting member 6 is set to a high temperature range, as shown in the figure. To explain more specifically, the stopping member 32 is constituted by a claw piece 34 at the tip of an arm rod 33 that projects laterally from the valve rod 28 and rotates integrally therewith.
When setting the temperature range to a high temperature range, the claw faces the back surface of the operating member 5 to prevent this operation. The hot water tapping operation when this restraining member 32 is provided will be explained. In the first operation, the setting of the high temperature range of the adjustment member 6 is canceled in order to perform the hot water tapping operation using the operation member 5. In this case, the operating member 5 can be operated to dispense hot water without being obstructed by the restraining member 32. Therefore, if this is pressed, the hot water tapping operation will be performed as described above.

If hot water needs to be dispensed at a high temperature, the adjustment member 6 may be set to a high temperature range. Note that if the adjusting member 6 is set to the high temperature side, the stopping member 32 naturally faces a position where the operation of the operating member 5 is stopped. Therefore, the operating member 5 cannot be operated unless the high temperature range of the adjusting member 6 is released, that is, unless the operating member 5 is operated to the low temperature side. In this embodiment, the hot water supply stop operation cannot be performed. Therefore, in order to operate the operation member 5 next time, it is always necessary to cancel the setting of the high temperature range of the adjustment member 6, and as a result, the adjustment member 6 is left in the state set in the high temperature range and the next tap water is not used. This prevents hot water from suddenly being discharged from the tap during operation.

The high temperature range changes depending on the incoming water temperature. For this reason, in the one shown in FIG. 5, a claw piece 34 is provided at the tip of the arm rod 33 so as to be freely adjustable to cope with this problem.

In the above-described embodiment, the push rods 7 and 12 are provided with push mechanisms 18 and 24, respectively, but it is also possible to provide a common push mechanism 42 as shown in FIG. Yes, and also the above-mentioned push button mechanism 1
Reference numerals 8 and 24 are provided with heart-shaped cam members, and for this reason, the pushing amount of the push button 25 is almost the same during the hot water tap operation and the hot water tap low operation, but this is set at the starting end position A as shown in FIGS. 6 and 7. It has a modified heart cam shape in which the distance from the end position B to the end position B is long, and the distance from the intermediate position C to the starting position A is short compared to this, and the stop member 32 is used to push the push button 25 forward of the intermediate position C during the push stroke of the push button 25. By restricting the pressure applied to the hot water, when the adjustment member is set to a high temperature range, the hot water tapping operation can be restricted instead of the above-mentioned restriction of the hot water tap stopping operation.

In FIG. 6, reference numeral 41 designates a lever mechanism that opens the main valve 22 only when the push button 25 is released from the push button 25, as known from Japanese Utility Model Application Publication No. 191832/1983.

In the above-described embodiment, the operation of the heat source 4 is controlled by the main valve 22.
As shown in FIG. In this case, the stopping member 32 may be provided so as to act to stop the first operating member 5a, and in this way, as in the case described above, When the adjustment member 6 is set to the high temperature range, the hot water tap stop operation is inhibited, and unless the high temperature range setting of the adjustment member 6 is released, the hot water tap stop operation cannot be performed by the operation member 5a, and as in the case described above, the hot water tap will be stopped at the next use. This eliminates the inconvenience of hot water being suddenly released. Furthermore, as shown in FIG. 9, there is a first operating member 5a that turns on the heat source 4 on-off valve 11 and opens the main valve 22, and a first operating member 5a that turns off the heat source 4 on-off valve 11 and closes the main valve 22. 2
In this case, the restraining member 32 may be provided so as to act to restrain the first operating member 5a, and in this way, when the adjusting member 6 is set to a high temperature range, the restraining member 32 will be stopped. Since the operation of the first operating member 5a is inhibited by the member 32, it is necessary to release the high temperature setting of the adjusting member 6 prior to this operation, thereby avoiding the danger of sudden hot water coming out.

Note that these pins 18b, 24b engage with grooved cam members 18a, 24a forming push mechanisms 18, 24 provided on the push rods 7, 12.
By releasing the engagement by pushing the second operating member 5b, the elastic force of the springs 21, 22a causes the push rods 7, 1 to
By returning the valve 2 to the starting position, the main valve 22 is closed and the heat source 4 on-off valve 11 is turned off.

Although some embodiments in which the operating member 5 is of a push button type have been described above, it goes without saying that this is not limited to such embodiments.
Further, the operating member 5 is not limited to a push button type, but may be a lever type or a knob type that is rotated.

As an example, as shown in FIG. 10, there are a knob 36 for operating the hot water tap 36 and a knob 37 for operating the heat source 4 as the operating members 5 on the front surface of the water boiler body 1, and an upper part of the knob 36 for operating the hot water tap. The adjusting member 6 is located at the position of the adjusting member 6, and when the adjusting member 6 is operated downward, the amount of water flowing into the heat exchanger 3 is throttled in the same manner as shown in FIGS. 2 to 5. The structure is such that the hot water that comes out is in a high temperature range.

In such a device, the knob 3 for operating the hot water
A cam 38 with a gradually increasing outer diameter and a stopper 38a on one side is mounted on the operating shaft 36a of the control member 6, and a rod 39 and a tip of the rod 39 are mounted on the adjustment member 6 and move up and down accordingly. A sliding piece 40 for sliding the cam 3 in the length direction is attached to the cam 3.
8, a rod 39, and a sliding piece 40 at the tip thereof constitute a restraining member 32.

To explain its operation, when the adjusting member 6 is set to a high temperature range, the sliding piece 40 comes within the rotational locus of the cam 38 as shown in FIG. 11 and acts to restrain the rotational operation of the operating knob 36.

Therefore, in order to perform the hot water tap operation, the adjustment member 6 must be moved upward to release the setting of the high temperature range. When the setting is released, the operating knob 36 can be operated and hot water can be dispensed without being obstructed by the restraining member 32. If hot water at a high temperature is required, the adjustment member 6 may be set to a high temperature range. In addition, when setting the temperature to a high temperature range in this tapping state, after the sliding piece 40 comes into contact with the cam 38, it slides against the rod 39 as shown in FIG. Not affected.

Then, when the operating knob 36 is operated to the hot water dispensing stop side with the adjustment member 6 set in the high temperature range, the sliding piece 40 descends along the cam surface of the cam 38 due to its own weight.
As shown in FIG. 11, it comes into engagement with the stopper portion 38b. Therefore, the next time you perform a hot water tap operation, you will not be able to tap the hot water unless you clear the settings once, thereby preventing hot water from suddenly coming out as described above. In addition, the above-mentioned one has a member 3 that prevents the hot water tapping operation.
2 has been shown, but the same effect can be obtained even if the hot water tapping operation is restrained by the restraining member 32.

Furthermore, the above-mentioned adjustment member 6 is configured to set a high temperature range by throttling the throttle valve 23 provided in the water channel 2, but this also includes a throttle valve in the gas passage 8 to the main gas burner 4a as shown in FIG. 35 is provided, and the capacity of the heat source 4 is increased by reducing the throttle amount of the throttle valve with the adjustment member 6 to set a high temperature range,
Furthermore, the high temperature range is set only by increasing the capacity of the heat source 4, and furthermore, although not shown, by bypassing the heat exchanger and throttling the throttle valve located in the bypass path connected to the outlet 2a. It is also possible to do so.

(Effects of the Invention) As described above, according to the present invention, there is provided a restraining member that operates when the adjusting member is set to a high temperature range and stops the operating member that controls the operation of the water heater from being operable. Therefore, when the adjustment member is set to the high temperature side, it is necessary to release the adjustment member and operate the operation member, thereby preventing the inconvenience of suddenly hot water coming out during the next use. effective.

[Brief explanation of drawings]

Fig. 1 is a front view showing one example of implementing the present invention;
The figure is an explanatory diagram that systematically explains the main parts.
FIG. 4 is a perspective view of the main part, FIG. 4 is a perspective view of its operating state, FIG. 5 is a perspective view of a modified example thereof, and FIG. 6 is an explanatory diagram systematically explaining the main part of another embodiment. , FIG. 7 is an enlarged diagram of the same, FIGS. 8 and 9 are explanatory diagrams systematically explaining the main parts of another embodiment, FIG. 10 is a front view of another embodiment, and FIG. The figure is a cutaway front view of the main part, FIG. 12 is a diagram showing its operating state, and FIG. 13 is a perspective view showing the main part of another embodiment. DESCRIPTION OF SYMBOLS 1...Water boiler body, 2...Waterway, 3...Heat exchanger, 4...Heat source, 5...Operation member, 6...Adjustment member, 32...Blocking member.

Claims (1)

[Claims] 1. On the front side of the water heater body, which has a heat exchanger interposed in a water channel that communicates the water supply inlet and the hot water outlet, and a heat source for heating the heat exchanger, there is at least one push button to control the operation of the water heater. In one equipped with a button-type or other operating member, and a temperature adjustment member for controlling the temperature of hot water obtained at the outlet,
When the adjustment member is set to a high temperature range, it operates,
A water heater comprising a restraining member that restrains the operating member from being operable.