JPH076581B2 - Water heater - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a structure of a mouthpiece of a water heater installed in a kitchen, a washroom or the like to supply hot water.

2. Description of the Related Art In recent years, the demand for hot water supply for houses has increased compared to the central hot water supply, where individual hot water supplies that can be used without waiting when desired and are affordable.

Hereinafter, an example of the above-described conventional hot water supply device will be described with reference to the drawings.

FIG. 3 and FIG. 4 show an external view and an internal configuration diagram of a conventional hot water supply device.

In FIGS. 3 and 4, 1 is a water heater main body, and 2 is a hot water storage portion provided inside the water heater main body 1. Reference numeral 3 is a heater for boiling the water in the hot water storage unit 2, and 4 is a changeover switch for operating the energization of the heater 3. Reference numeral 5 is a water supply valve for supplying / stopping water supply to the hot water storage unit 2, and 6 is a water supply knob for operating the water supply valve. Reference numeral 7 is a mixing valve that adjusts the hot water outlet temperature by changing the distribution ratio of the amount of water, and 8 is a mixing lever that operates the mixing valve 7. Reference numeral 9 is a hot water side branch pipe provided in the mixing valve 7, and 10 is a water side branch pipe. Reference numeral 11 is a hot water supply pipe connected to the upper portion of the hot water storage unit 2. 12 is a mouth connected to the hot water supply pipe 11. 13 is a shower head provided at the end of the mouth 12. 14 is a sealing packing for switching between the shower head and the direct current.

The operation of the hot water supply device configured as described above will be described below.

First, when the water supply knob 6 is opened, the water supply valve 5 is opened, and when the hot water storage unit 2 is filled with water, the shower head 13 comes out of the water. Therefore, by closing the water supply knob 6, the water supply valve 5 is closed and the water supply is stopped. Next, by turning on the changeover switch 4, the heater 3
Energizes to boil the water in the hot water storage unit 2. By operating the mixing lever 8 during water supply, the distribution ratio of the water amount to the hot water side branch pipe 9 and the water side branch pipe 10 connected to the mixing valve 7 is changed. The water introduced into the hot water branch pipe 9 enters from the lower part of the hot water storage part 2 and pushes up the hot water, and flows into the hot water supply pipe 11 connected to the upper part of the hot water storage part 2. Water side branch pipe
The water introduced into 10 is connected to the hot water supply pipe 11 at the upper part of the hot water storage unit 2 and mixed with the hot water coming out of the hot water storage unit 2
Hot water is discharged from the shower head 13 at the tip of. The shower head 13 can switch the hot water supply state between the shower and the direct current.

Problems to be Solved by the Invention However, with the above configuration, the shower head 13
If the clogging occurs, the water pressure to the hot water storage unit 2 increases,
When the glass lining treatment is applied to the inner surface of the hot water storage unit 2, cracks in the glass lining may expose the iron material and cause red water accident due to corrosion, and may cause deformation problems of the hot water storage unit 2. Had. Further, since the shower head 13 has a small opening hole, a water film stretches due to surface tension, which freezes in the cold season, causing a water leakage accident that breaks the stopper hot water storage part, etc. Had.

In view of the above problems, the present invention provides a water heater with good usability.

Means for Solving the Problems In order to solve the above problems, the present invention provides a hot water storage unit having heating means, a hot water supply pipe connected to the hot water storage unit, a spout connected to the hot water supply pipe, and A shower provided at the tip of the mouth and a shower head with DC switching are provided, and a cross-shaped notch is provided in the DC side sealing packing when the shower side of the shower head is set.

Effect The present invention has the above-described configuration, when the shower side is set,
Even when the shower head is clogged or freezes are clogged, the cross-shaped notch on the DC side sealing packing
Since the water pressure can be released to the discharge port on the DC side, it is possible to prevent accidents such as pressure breakdown in the hot water storage tank, water leaks, and corrosion red water due to cracks in the glass lining with a simple method.

Embodiment Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings. It should be noted that the same parts as those of the conventional example are given the same numbers to simplify the description.

In FIGS. 1 and 2, 12 is a mouth, 13 is a shower body, and 14 is a fixed packing for fixing the mouth 12 and the shower head 13. 15 is a fixing screw. 16 is a shower head water spray plate, 17 is a shower water flow switching lever, 18 is a water flow switching plate that rotates in conjunction with the shower switching lever, 19 is shower water spray from the shower head water spray plate 16 and direct current from the center of the shower water flow switching lever 17. It is a sealing packing for switching and sealing the flow paths of and. Reference numeral 20 is a cross-shaped cut provided in the DC sealing portion of the sealing packing 19.

The operation of the mouthpiece of the water heater configured as described above will be described below.

The water flowing from the mouth 12 is the shower water flow switching lever.
By operating 17, the water flow switching plate 18 interlocked with the shower water flow switching lever 17 turns, and the shower side opening or the DC side opening of the water flow switching plate 18 is aligned with the opening of the sealing packing 19. Shower from the opening hole of the shower head sprinkler plate 16, or the shower water flow switching lever
It becomes DC from 17 and flows out. If the shower sprinkler plate becomes clogged with water stains or freezes and becomes clogged, a large amount of water pressure will be applied to the cross shape and the notch 20 provided on the sealing packing 19, resulting in a cross-shaped hole and direct current. Water pressure can be released to the side.

As described above, according to the present embodiment, even when the shower head 13 is clogged or frozen, water pressure can be released to the DC side, so that a hot water tank pressure deformation accident or a freeze breakage accident can occur. It can be prevented. Further, since the relief hole can be formed only by the cross-shaped notch portion 20, it is not necessary to separately provide a relief valve having a complicated safety valve structure, and a simple and inexpensive structure can be provided.

Effects of the Invention As described above, according to the present invention, the following effects can be obtained.

(1) When the shower head is clogged, the water pressure can be safely released to the direct current side, so it is possible to prevent pressure breakdown and water leakage accidents in the hot water storage tank.

(2) The water pressure can be safely released to the DC side even when freezing clogging occurs in the hole of the shower head.

(3) Since the safety valve function can be realized by a simple method, the cost can be reduced.

(4) Since there is a pressure relief part in the shower head, there is no need for a separate drain pipe when a safety valve is installed separately.

[Brief description of drawings]

FIG. 1 is a sectional view of a shower head of a water heater according to an embodiment of the present invention, FIG. 2 is an external view of a sealing packing of the water heater, and FIG. 3 is an external view of a conventional water heater. The figure is a block diagram of a conventional water heater. 1 ... Water heater body, 2 ... Hot water storage part, 12 ... Japer, 13 ...
… Shower head, 19 …… Seal packing, 20 …… Cross notch.

Claims (1)

[Claims] 1. A hot water storage unit having a heating means, a hot water supply pipe connected to the hot water storage unit, a spout connected to the hot water supply pipe, a shower provided at the tip of the spout, and a shower head with DC switching. A water heater provided with a cross-shaped notch in a DC side sealing packing when the shower side of the shower head is set.