JP2577275Y2 - Water heater - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a domestic hot water supply device for supplying hot water by a pump.

[0002]

2. Description of the Related Art FIGS. 2 and 3 are diagrams each showing an outline of a domestic hot water supply apparatus. In these figures, 11 is a container, 12 is a pump, and 13 is a pipe connecting the container and the pump. 14 is a hot water supply pipe.

In this hot water supply apparatus, hot water is supplied from a container by a pump.

FIG. 4 shows a configuration near the pump of such a hot water supply apparatus. In this figure, a pump 12 has a pipe 13 fixed to a container 11 and a suction port 15 connected by a pipe made of an elastic material such as rubber.

[0005]

In the hot water supply apparatus shown in FIG. 4, since the container 11 and the pump 12 are relatively separated from each other,
The entire hot water supply system must be large.

In order to join the pump and the container while maintaining airtightness, a hole is made in the bottom of the container 11 and a metal pipe 16 having one opening as shown in the figure is inserted from the inside. A and A are joined by welding or the like and air-tightly connected, and this pipe 16 and the suction port of the pump are connected by a pipe 17 made of an elastic body.

[0007] For this reason, the coupling between the container and the pump is troublesome and has disadvantages such as an increase in cost.

An object of the present invention is to provide a hot water supply apparatus which has a short connection portion between a container and a pump, and thus can be made compact as a whole, and is easily connected and airtight.

[0009]

A hot water supply apparatus according to the present invention has a container for storing hot water and a pump for supplying hot water in the container to the outside, and keeps the container and the pump airtight. For this purpose, a hole for connection is formed in the container, and an O-ring storage portion composed of a wall surface extending into the container and a holding portion (retaining portion) is formed in this hole portion. After placing an O-ring in the storage section, the water intake port (suction port) of the pump
Is inserted into the hole and the pump is fixed so that the positional relationship between the pump and the container does not move. The O-ring is pressed against the wall surface formed in the hole and the outer surface of the water intake of the pump. To maintain airtightness.

As described above, since the water intake of the pump is inserted into the container, the distance between the container and the pump is reduced, so that the size of the water heater can be reduced. The pump can be easily attached to the container itself or to another part by inserting the water intake into the hole and fixing the pump so that the positional relationship between the container and the container does not move.

[0011]

Next, an embodiment of the hot water supply apparatus of the present invention will be described.

FIG. 1 is a sectional view of an embodiment of the present invention.
Is a container, and 12 is a pump. The illustrated pump performs a pumping operation by rotating a driving magnet by rotation of a motor using the same impeller pump as that shown in FIG. 4, and rotating the driven magnet by magnetic coupling to rotate the impeller. , Or other types of pumps.

In this embodiment, a hole 2 is formed in the bottom 1 of the container, and a wall 3 and a wall 3 facing the inside of the container are formed at the edge of the hole 2.
The O-ring 5 is disposed in a region formed by the wall surface 3 and the retaining portion 4 in a direction substantially perpendicular to the O-ring storage portion. Is formed.

After the O-ring is placed in the O-ring storage portion in the hole 2 on the bottom surface of the container 11 formed as described above, the water inlet of the pump 12 is inserted, and the pump 12 is attached to the container 11 by using the mounting member 6. If fixed, it will be in the state shown in FIG.
The ring 5 is pressed against the wall surface 3 and the outer surface of the water intake, so that the airtightness of the hole portion (the joint portion between the container and the pump) can be obtained.

As described above, in this embodiment, since the water intake of the pump is inserted into the hole formed in the container and the two are connected, the two are arranged close to each other, and the whole hot water supply apparatus is reduced in size. I can do it. Also, since the connection between the container and the pump can be made easily, the assembly of the hot water supply device becomes easy and the cost can be reduced. The pump may be mounted by any method as long as the relative position between the container and the pump does not move, in addition to the mounting member fixed to the bottom of the container as in the illustrated embodiment.

[0016]

The hot water supply apparatus of the present invention can be made small in size because the water intake of the pump is inserted into the container to connect the container and the pump, the assembly is simple, and the airtightness is perfect.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a diagram showing a connection between a container and a pump in the hot water supply apparatus.

FIG. 3 is a diagram showing another example of the connection between the container and the pump in the hot water supply apparatus.

FIG. 4 is a cross-sectional view of a conventional water heater.

[Explanation of symbols]

 1 bottom surface of container 2 hole 3 wall surface 4 retaining part 5 O-ring

Claims (1)

(57) [Scope of request for utility model registration] 1. A container for storing hot water, and a pump for supplying hot water in the container to the outside. A wall for pump connection formed in the container has a wall extending from the hole into the container and a wall. An O-ring storage section consisting of a continuous holding section is provided on the wall surface, and the O-ring cannot be moved with respect to the container in a state where the water inlet is inserted into the hole after the O-ring is disposed in the storage section. A water supply device fixed such that the O-ring is sandwiched between a wall surface of the storage portion and an outer surface of a mounting port of the pump so as to maintain airtightness of a connection portion between the container and the pump.