JPH0749677B2 - Water heater - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to 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 water heater will be described with reference to the drawings.

2 and 3 show the external appearance and internal structure of a conventional water heater.

In FIGS. 2 and 3, reference numeral 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 5. 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 pressure relief hole provided at the base of the mouth 12.

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

First, by opening the water supply knob 6 of the water supply valve 5, the water supply valve 5 is opened, and when the hot water storage unit 2 is filled with water and the water is full, water comes out from the shower head 13. 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 is energized to boil the water in the hot water storage unit 2. By operating the mixing lever 8 during water supply, the distribution ratio of water 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. Further, the water introduced into the water side branch pipe 10 is at the upper part of the hot water storage part 2
It is connected with 11, and is mixed with the hot water discharged from the hot water storage unit 2 to form a shower from the shower head 13 at the tip of the mouth 12, and the hot water is discharged. At this time, shower head 13
When a clogging occurs in the mouth, a clogging occurs at the tip of the mouth 12 due to freezing, etc., the water pressure can be released from the pressure relief hole 14 simply provided at the base of the mouth 12.

Problems to be Solved by the Invention However, in the above configuration, the shower head 13 is clogged at the tip of the mouth 12 due to water stains or foreign matter, or the head is stopped due to freezing, etc. There is a problem such as wetting the sink or floor under the water heater that has spouted from the pressure relief hole 14 provided at the base of 12. Further, since the mouthpiece 12 uses a bellows tube made of stainless steel, it has a problem that it is easy to cool in a cold region, is gradually frozen from the tip, and is easily stopped.

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 relates to a hot water supply pipe connected to a hot water storage unit having a heating means, a spout having a pressure relief hole at the base, and a spout of the spout. It is configured such that a cover that covers from the root portion to the tip and that has a drainage clearance from the pressure relief hole is attached inside.

Effect The present invention can reduce the freezing of the mouth by improving the aesthetics of the mouth and installing a cover that prevents the mouth from being directly exposed to the outside air. In addition, drainage from the pressure relief part provided at the base of the mouth can also be guided to the tip of the mouth through the gap with the mouth in the cover, so the drainage from the pressure relief hole is the water heater. You can avoid the problem of getting the sink or floor wet.

Embodiment Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings. The same parts as those in the conventional example are designated by the same reference numerals to simplify the description.

In FIG. 1, 12 is a spout from the water heater body 1 (not shown), and 13 is a shower head attached to the tip of the spout 12. Reference numeral 14 is a pressure relief hole provided at the base of the mouth 12, and when the shower head 13 at the tip of the mouth 12 is clogged with water stains or foreign matter or is frozen, discharges hot water from the water heater. To do. Reference numeral 15 is a cover which covers the base to the tip of the mouth 12 and has a drainage clearance formed between the mouth 12 and the mouth 12.

With the above configuration, the mouth 12 can be kept warm, and when the tip of the mouth 12 is clogged or frozen,
12 Securely drain the water discharged from the pressure relief hole 14 at the base.
12 Can be led to the sink through the tip.

Since the water heater body 1 is the same as that shown in FIG. 3, the description thereof will be omitted.

That is, according to this embodiment, since the cover 15 for keeping the mouth 12 warm is attached, it is possible to prevent the mouth 12 from freezing. Also, by forming the cover 15 with a resin molded product, it is possible to realize a colorful mouthpiece with a beautiful appearance. Also,
When water stains, foreign matter clogging, freezing clogging, or the like occurs, it is possible to prevent discharge from the pressure relief hole 14 and pressurization of the hot water storage unit 2. At that time, the discharge water can pass through the inside of the cover 15 and be drained from the tip of the mouth 12 into the sink which is a water place, so there is a problem such as a sink other than the water place under the water heater and wetting the floor. Can be eliminated.

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

(1) The freezing of the mouth can be improved by attaching the cover.

(2) The cover of the mouth can be made of resin and a colorful design with a beautiful appearance can be adopted.

(3) Water pressure can be released through the pressure relief hole at the base of the mouth when the tip of the mouth is clogged with water, foreign matter is clogged, or freezing is clogged, preventing pressure damage to the hot water storage section. it can.

(4) The discharge water from the pressure relief hole can be reliably drained to the sink which is the water field. In addition, a separate hose is not required for drainage, and the drainage is drained from the part where the tip of the mouth can be seen easily, so you can immediately see the abnormality.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a spout part in an embodiment of a water heater of the present invention, FIG. 2 is an external view of a conventional water heater, and FIG. 3 is an internal configuration diagram of the water heater of FIG. . 1 ... Water heater main body, 2 ... Hot water storage part, 12 ... Japer, 14 ...
… Pressure relief hole, 15… Cover.

Claims (1)

[Claims] 1. A hot water supply pipe connected to a hot water storage unit having a heating means, a spout having a pressure relief hole at the base, a root portion to a tip of the spout, and the inside of the pressure relief hole. A water heater with a cover equipped with a drainage clearance.