JPH0379926A - Hot water supply device - Google Patents

Abstract

PURPOSE:To enable water to be stopped at the time of power failure, enable a variation of flow rate with a fast pitch to be carried out and then prevent a water leakage by a method wherein a supplying of hot water is stopped with a solenoid valve in the case of a power failure and a flow rate control valve is moved by a solenoid valve at a fast pitch, the flow rate adjusting valve is driven by the solenoid and a water stoppage is carried out by the solenoid valve. CONSTITUTION:A hot water conduit pipe 24 and a water conduit pipe 25 reach a mixing valve 28 through filter and check valves 26 and 27. The mixing valve 28 is driven by a solenoid 29 and the mixed hot water reaches a flow rate control valve 30 arranged at a downstream side, driven by a solenoid 31 and then a flow rate is adjusted. A value of flow rate is sensed by a flow sensor 32 and the mixed hot water is supplied to each of the hot water supply ports through the downstream side solenoid valves 33 to 36. When a stopping of supplying of hot water is instructed, the flow rate adjusting valve 30 is metered and then a solenoid valve 35 is stopped. When the supplying of hot water is stopped, an electrical energization for the solenoid 31 and solenoid valves 33 to 36 is terminated, the flow rate control valve 30 is operated such that a valve member 63 is pushed by a spring 66 and the flow passage is metered to the maximum degree. The solenoid valves 33 to 36 are operated such that a packing 93 is abutted against a valve seat so as to stop water supplying.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water heater equipped with a temperature control means and a flow control valve.

Conventional technology Conventionally, this kind of salary? There was a device as shown in Fig. 7. (For example, Japanese Unexamined Patent Publication No. 61-140685) In FIG. 7, hot water and water flowing through the hot water flow path 1 and the water flow path 2 are regulated to have equal secondary pressures at the pressure regulating valve 3. That is, the pressure regulating valve 3 includes a hot water side valve body 4 that reduces the primary pressure PH of the vortex flow path 1, a hot water side valve seat 5, a water side valve body 6 that reduces the primary pressure pct of the water flow path 2, and a water side valve body 4 that reduces the primary pressure PH of the water flow path 1. It is composed of a valve seat 7, a common shaft 8 that connects the hot water side valve body 4 and the water side valve body 6, and a piston 9 that partitions the hot water and water flow paths, and the secondary pressure PH2 of the hot water and water, It operates based on the pressure difference between PC2. Even if the pressure of hot water or water suddenly changes, the pressure regulating valve 3 moves due to the secondary pressure difference, and acts so that the secondary pressures of hot water and water are always kept equal. The mixing ratio of hot water and water is determined by a mixing valve 12 energized by a motor U.
can be changed by moving left or right to change the mixing temperature.

The mixed hot water mixed in the mixing section 13 is supplied via a flow regulating valve 14 driven by a motor, and the temperature of the mixed hot water is detected by a thermistor 15 and the flow rate is detected by a flow rate sensor 16. ′M to match the set value of
The controller 18 energizes the motor 11 and flow control valve 14 . 19 is a flow rate sensor that detects the flow rate.

Problems to be Solved by the Invention However, this conventional water heater had the following problems.

+11 Since the flow control valve 14 driven by a motor was used to adjust the flow rate and shut off the water, it was not possible to automatically shut off the water during a power outage. For example, if a power outage occurs while a bathtub or the like is being filled with hot water using the signal from the flow rate sensor 19, the water may not be stopped and the water may overflow.

(2) Since the flow control valve 14 is driven by a motor,
It was not possible to operate quickly, and it was not possible to add the ability to vary the flow rate in quick pinches to provide a comfortable feel from the shower.

(3) After long-term use, the shaft seal of the flow control valve 14 wears out, causing water leakage, which sometimes causes water to flood into the frame of the building.

The present invention solves these conventional problems,
The purpose is to provide a water heater that can shut off water during power outages, can quickly change the flow rate in a pinch, and has no risk of water leakage.

Means for Solving the Problems In order to achieve the above objects, the water heater of the present invention includes a temperature control means for regulating the temperature of hot water supply, and an i for regulating the flow rate of hot water supply.
A flow control valve, a solenoid that drives the flow control valve,
A flow rate setting device that sets the flow rate, a water stop N/magnetic valve installed downstream of the flow ffi control valve, a hot water setting device that instructs the supply and stop of hot water supply, and a hot water setting device that controls the hot water supply according to the instructions of this hot water setting device. A water heater equipped with a controller that controls to stop energizing a solenoid valve and a solenoid when the water heater is stopped.

Effect: With the above configuration, the electromagnetic valve stops the hot water supply when electricity is stopped, and the solenoid controls the flow MtJ.
By moving the four-section valve at a fast pitch, driving the flow control valve with a solenoid, and shutting off water using a solenoid valve, the valve can be constructed without a seal, so there is no risk of leakage.

Example Embodiments of the present invention will be described below with reference to the drawings.

A shower tower 21 is attached to the wall of a shower room 20. The shower room 20 has a waterproof structure that prevents hot water splashing inside from penetrating the architectural structure.
The shower tower 21 also has a waterproof structure on its surface, but inside there is a non-waterproof section 23 in the lower communication section 22.
It communicates with Hot water pipe 2 drawn from the communication part 22
4 and the water pipe 25 pass through filter/check valve sections 26 and 27 and reach the mixing valve 2.

The mixing valve 28 is driven by a solenoid 29, and the mixed hot water reaches a flow M"J4 node valve 30 provided on the downstream side, and is driven by a solenoid 31 to perform a flow of 1 m. The flow rate value is detected by a flow sensor 32. The mixed hot water is further supplied to each hot water supply port via electromagnetic valves 33, 34, 35, and 36 downstream.

The mixed hot water that has passed through the solenoid valve 33 is supplied to the shower provided at the top as a diffused shower from the shower head 37, and the mixed hot water that has passed through the solenoid valve 34 is supplied from the shower head 37 as a concentrated shower. Further, the mixed hot water that has passed through the solenoid valve 35 is supplied from a hand shower 38, and the mixed hot water that has passed through the solenoid valve 36 is supplied through a hot water distribution pipe 39. A speaker 4o is provided at the top of the shower tower 21, and a setting device 41 is provided at the middle. Further, the controller 42 is wired as shown in the figure,
It is connected to an external low voltage (24V) power source (not shown), and is also connected to an external record player 43.

FIG. 2 shows details of the mixing valve 28 and solenoid 29.

The hot water and water entering the valve frame 44 through the hot water pipe 24 and the water pipe 25 are passed through a hot water side valve 45 and a water side valve 46 which are formed in a cylindrical shape and have a structure that balances the primary pressure of hot water and water. In the section, the ratio is adjusted by adjusting the aperture ratio formed by the through hole 47.48 and the valve seat 49.50. And inside the cylinder 51.52 of the hot water side valve 45 and the water side valve 46.
The flow rate ratio is determined by the differential pressure of , and the disturbance plate 5354 having resistance, and hot water and water are mixed. Inside the cylinder 51.5
The differential pressure between the two parts can be changed by the compression force generated by the solenoid 29, and the temperature of the mixed water can be changed arbitrarily.

In addition, if the primary pressure of hot water or water fluctuates while the temperature is controlled at a constant mixing ratio, the internal pressure in the 51st and 52nd sections of the cylinder will also rise, so the system will automatically throttle the increased pressure. It also performs 1g function as a pressure regulating valve.

The solenoid 29 includes a coil 55, an internal plunger 56, a protection tube 57, an O-ring 58, 59, and a cap 60.
The thrust of the plunger 56 is changed by increasing or decreasing the current to the coil 55. The mixed water temperature is detected by a thermistor 61.

FIG. 3 shows details of the flow control valve 30 and the solenoid 31. A flow regulating valve body 63 is provided inside the valve frame body 62, and the flow rate is adjusted by increasing or decreasing the opening formed by the through hole 64 and the valve seat 65.

Further, the flow rate regulating valve body 63 is biased by a spring 66,
When the solenoid 31 is de-energized, the flow rate is reduced to almost zero. Like the solenoid 29, the solenoid 31 includes a coil 67, a plunger 68, a protection tube 69,
O-ring 70.71. It is composed of a cap 72 and the like.

FIG. 4 shows details of the setting device 41.

The setting device 41 includes hot water supply and stop switches 73, 74, 75, 76, 77 that indicate the hot water supply point, and a speaker 4 that outputs music.
Switch 78 for flowing water from 0, switch 79.80 for selecting variation in mixed water temperature, switch 81 for selecting variation in flow rate.
．． 82. Switch for manually adjusting high or low salinity 83.
84, Switch 85 to manually set the flow rate to high or low for 311 steps
．． 86, an emergency stop switch 87, etc. are provided.

Figure 5 D'w shows details of M1 valve 33, 34, 35, 36 (7).

An internal plunger 89 is driven by the coil 88,
By opening and closing the biloft type 90, the back pressure applied to the diaphragm 92 through the bleed hole 91 is adjusted, and the seal 93
The so-called biloft type valve 1 that opens and closes the flow path is a magnetic valve.

FIG. 6 is a control block diagram.

Inside the controller 42, a hot water supply point determination section 95 and a solenoid valve 3 are installed.
3, 34, 35, 36, a time difference setting section 96 for adjusting the opening/closing timing of the flow rate regulating valve 30, an opening/closing instruction section 97, a flow rate storage section 98, a temperature storage section 99, etc. are provided.

Next, the operation of this embodiment will be explained.

For example, when the hot water supply/stop switch 75 is pressed, the solenoid valve 35
The bottom of the hand shower 38 is opened and hot water starts being supplied from the hand shower 38.

The temperature and flow rate at which hot water is supplied are retrieved from the information stored in the temperature storage section 99 and flow rate storage section 98 in advance.

If you want to change the stored value, you can do so by operating switches 83, 84 or 85, 86.
When is pressed, the music being played on the record player 43 is played from the speaker 40 regardless of the hot water supply state. When the switch 79 is pressed, the temperature of the mixture mixed by the mixing valve 28 changes within a predetermined range in conjunction with the music.

If the switch 79 is pressed again, the linkage with the music will stop.

When the switch 80 is then pressed, the temperature is supplied in fluctuations in a 115 fluctuation pattern. When the switch 80 is pressed again, this fluctuation stops. When the switch 81 is pressed, the flow rate changes in conjunction with the music. Fluctuations in the flow rate are controlled by the flow control valve 3.
This is done by driving the solenoid 31.

In order to obtain a sense of comfort through fluctuations in flow rate, it is desirable that the changes occur faster than fluctuations in temperature. 'IA degree fluctuation is
The comfortable range is about 3 to 10 seconds, while the comfortable range for flow rate fluctuations is about 0.1 to 1 second.

Flow by solenoid 31! 'Since the adjustment/articulation 30 can be operated in direct motion, high-speed response, which was not possible with conventional motor-driven flow control valves, is possible. This is due to the fact that unlike conventional motors, there is little delay in the operation of the drive unit itself, there is no delay factor such as gear backlash, and the drive speed is high. Also,
The ability to change in a very short time means that it is possible to follow the fast tempo of music, which is an important element in linking with music. Even if the flow rate is varied at a fast pitch, the solenoid 31 does not have a sealing part via an O-ring in its movable part, so there is no risk of water leakage due to wear of the O-ring even after long-term use. Press the switch 81 to stop synchronization with music, and press the switch 82 to increase the flow rate to 11.
5 It fluctuates in a fluctuation pattern. switches 79 and 80,
Further, although the switches 81 and 82 can only be selected alternatively, the switches 79 and 81 and the switches 80 and 82 can be used simultaneously. In addition to the switch 75, switches 73 and 74 can also be used to supply hot water based on temperature fluctuations and flow rate fluctuations. When switch 87 is pressed, all hot water supply is stopped.
Hot water supply conditions return to the initial state.

Here, the operation at the time of starting and stopping hot water supply will be described in detail. 3 For example, when the switch 75 is pressed to instruct the start of hot water supply, the hot water supply point determination unit 95 determines which switch has been operated, and A predetermined flow rate value is retrieved from the flow rate storage section 98. Similarly, a predetermined temperature value for each hot water supply location is retrieved from the temperature storage section 99. At the same time, the solenoid valve 3 corresponding to the switch 75
5 is opened, but the flow rate control valve 30 and the solenoid valve 35 are opened first after the solenoid valve 35 is opened.
0 is driven.

This is because the driving speed by the solenoid 31 is fast, so there is a slight time delay. This is because by regulating the Ii1 mode valve, it is possible to prevent an operation in which the discharge flow rate becomes too large and then is throttled down again. Also, when instructed to stop the hot water supply, the first thing to do is to flush! After throttling the 111-node valve 30, the solenoid valve 35 is stopped.

This is because water hammer is likely to occur if the flow path is closed all at once with the solenoid valve 35, but this can be prevented by tightening the fit and then stopping it.

When hot water supply is stopped, the solenoid 31 and solenoid valve 3
The power to 3.34.35.36 is cut off, and the flow control valve 3
0, the valve body 63 is pushed by the spring 66 and the flow path is narrowed to the maximum extent. In addition, the solenoid valves 33, 34, 35, and 36 have gaskets 93 in contact with the valve seats to shut off water.

When the hot water supply is stopped, power is not applied to the solenoid 31 and the solenoid valve 33, so power consumption is reduced.In particular, the flow rate control valve 30 is set so that the valve position when not energized maximizes the flow rate. Because it is in a restricted state, hot water supply has to be restarted.
The point that a large flow rate does not flow immediately to Ij, and for example, i
When the solenoid valve 36 is opened to allow a small flow of water to flow for antifreeze operation, there is no need to energize the solenoid 31, which is advantageous in that power consumption can be further reduced.

Effects of the Invention As described above, the water heater of the present invention includes a temperature control means for regulating the temperature of hot water supply, a flow rate tA adjustment for regulating the flow rate of hot water supply,
A solenoid that drives this flow rate control valve, a flow rate setting device that sets the flow rate, and a water stopper provided downstream of the flow rate control valve.
It is equipped with a solenoid valve, a hot water setting device that instructs hot water supply and stop, and a controller that stops energizing the solenoid valve and solenoid when hot water supply is stopped according to the instructions of this hot water setting device. Has results.

(11) Since the magnetic valve closes the flow path during a power outage, hot water supply will not stop and there will be no leakage when applied to bathtubs.

(2) Since the flow control valve is driven by a solenoid, it is possible to provide variable hot water supply by changing the flow rate at a fast pace, making it possible to have a comfortable shower.

(3) Neither the solenoid nor the electromagnetic valve has a seal that is rubbed by the sliding shaft, so no water leaks even after long-term use.

(4) Since the flow rate control valve is driven by a solenoid, the valve position when de-energized can be set to a specific position. Special operations are possible, such as restricting the control valve and opening the solenoid valve to prevent freezing.

[Brief explanation of drawings]

Claims (1)

[Claims] A temperature control means for adjusting the hot water supply temperature, a flow rate control valve for adjusting the hot water supply flow rate, a solenoid for driving the flow rate control valve, a flow rate setting device for setting the flow rate, and a water cutoff provided downstream of the flow rate control valve. a solenoid valve for water supply, a hot water setting device for instructing the supply and stop of hot water supply, and a controller for controlling to stop energization to the electromagnetic valve and the solenoid when hot water supply is stopped according to instructions from the hot water setting device. Water heater.