JP2822016B2 - Hot water heater with make-up water tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a makeup water tank mainly used in a circulation circuit of a heating water heater used at home.
The present invention relates to a hot water heater provided with:

[0002]

Conventionally, in order to absorb the expansion and contraction of the heat medium in the heat medium circulation circuit of the water heater or the like for heating, the heat medium (hot water)
It is known to provide a make-up water tank in a circulation circuit.

[0003]

As a heating medium used in a circulation circuit for hot water heating, a mixture of antifreeze and water is usually used.
If the circulation circuit is of the open type or semi-closed type, water will evaporate and the concentration of antifreeze will increase when used for a long period of time, causing problems such as an increase in pump load. Therefore, it is necessary to replenish water occasionally.

The make-up water tank is provided for replenishing this water. The smaller the water supply port of the make-up water tank is, the smaller the water supply port is because the processing is simpler and the cost is lower. There is a problem that it is difficult to do.

[0005] It is an object of the present invention to provide a cap structure of a make-up water tank which solves such a problem.

[0006]

According to the present invention, in order to achieve the above object, a makeup water tank provided in a hot water circulation circuit is provided in a housing, an opening / closing lid is attached to a water supply port of the makeup water tank, and the water supply is provided. In a hot water heater including a makeup water tank provided with an opening on an upper surface of a housing opposed to a mouth, a cover is provided to cover the opening, and the cover has a base having an inner diameter larger than the outer diameter of the opening / closing lid. And a top portion having an outer diameter smaller than the water supply port of the makeup water tank, and the cover is detachably fixed so as to cover the opening of the housing with fixing means. Make- up water tank equipped with such means
In a hot water heater provided with an ink, if the cover is fixed by a fixing means so as to cover the opening of the housing, the opening can be closed by the cover and the opening / closing lid can be hidden. Then, remove the said cover body from the housing, it plays the role of the funnel is likely to do the water supply if rice difference to the water supply port in the upside down.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a hot water circulation circuit for circulating a heat medium composed of water mixed with antifreeze,
Is a first heat exchanger 3 composed of a boiler water storage unit of a hot water boiler 2 serving as a heat source device, a second heat exchanger 4 using exhaust heat from the hot water boiler 2, a makeup water tank 5, and a replenishing water tank. The hot water circulation pipe 1 is composed of a hot water outgoing pipe 7 for connecting the water tank 5 and the radiator 6 and a return pipe 8 for returning the heat medium from the radiator 6 to the first heat exchanger 3. Except for 6, it is stored in the housing 9.

The hot water boiler 2 is a boiler water serving as a first heat exchanger 3 between the inner and outer cylinders 10a and 10b in which both ends of inner and outer double cylindrical cylinders 10a and 10b are connected by seam welding or other means. The combustion chamber 1 is used as a storage section and the inside of the inner cylinder 10a is
Constituted by the lateral standing can body 10 which was 0d, an exhaust outlet 11 on the top of the can body 10 is provided, the combustion chamber 10d is an opening 10e is provided at the other end closing the first end, the combustion chamber from the opening 10e 1
The burner 12 was configured to face the inside of 0d. Reference numeral 10f denotes a cover for closing the opening 10e.

The exhaust gas discharged from the exhaust outlet 11 passes through the exhaust chamber 13 and is provided on the upper surface of the housing 9 through the exhaust port 1.
The second heat exchanger 4 was exposed to the exhaust chamber 13 through an exhaust pipe (not shown) connected to the exhaust pipe 13.

The makeup water tank 5 is provided at an upper portion on one side in the housing 9 so that at least an upper portion thereof faces the uppermost portion of the hot water circulation circuit 1, and a water supply port 5a provided on the upper surface thereof.
Face the opening 9a provided on the upper surface of the housing 9.

Reference numeral 15 denotes an opening / closing lid attached to the water supply port 5a, and the opening / closing lid 15 has a pressure adjusting mechanism 16 for releasing the pressure when the pressure in the makeup water tank 5 exceeds a predetermined pressure. To explain this, the water supply port 5a has a cylindrical shape, and a valve seat 5b is provided at a lower portion of the cylindrical portion.
When the valve 16a is provided, the valve 16a provided on the
b makes contact with the valve seat 5b. An engaging portion 5c is provided around the water supply port 5a. The engaging portion 5c has an inclined lower surface with which a locking claw 15a provided at two places on the left and right of the opening / closing lid 15 is engaged. When the cover 15 is rotated while pressed against the valve seat 5b, the locking claw 15
The opening / closing lid 15 is attached to the water supply port 5a by engaging with the engaging portion 5c with which the a engages. In this case, when the pressure in the makeup water tank 5 becomes higher than a certain level, the valve 16a is pushed by the pressure and moves away from the valve seat 5b to release the pressure in the makeup water tank 5 via the relief pipe 15b. Release to the outside.

Reference numeral 17 denotes a cover which covers the opening 9a from its upper surface. The cover 17 has a base 17a having an inner diameter larger than the outer diameter of the opening / closing lid 15, and an outer diameter smaller than the water supply port 5a of the makeup water tank 5. The cover 17 has a flange 17c protruding from the periphery of the lower end of the base 17a and is fastened around the opening 17a of the housing 9 with screws 18 as fixing means. And fixed detachably. Reference numeral 19 denotes a cap provided on the top of the cover 17.

In FIG. 1, reference numeral 20 denotes a pump interposed in the hot water outgoing pipe 7, reference numeral 22 denotes a water level sensor provided in the makeup water tank 5, and reference numeral 21 denotes a temperature sensor for detecting tap water temperature.

The burner 12 has a fuel injection nozzle 12b for injecting kerosene or other fuel facing the inside of the cylinder 12a and an igniter 12c, and the fuel ejected from the fuel supply nozzle 12b is connected to the root of the cylinder 12a. Air blown directly into the cylinder 12a from the blower 23 and the cylinder 12a
Mixed by the secondary air supplied through the air hole 12a-1 provided with the ambient air chamber 12d from the cylinder 12a to囲撓
They are combined and burn in the combustion chamber 10d. 12f is a pump interposed in the fuel supply path 12e, 24 is an air supply pipe to the blower 16, and 25 is a remote control box for remote operation.

Next, the handling of the opening / closing lid structure of the makeup water tank will be described.

In a normal use state, as shown in FIG.
An opening / closing lid 15 is provided on the water supply port 5a of the makeup water tank 5, and a cover 17 covers the upper surface of the opening 9a with a screw 18 to fasten and fix it. By doing so, the cover 15 is hidden by the cover 17, so that the cover 15 is not mischievous.

When it becomes necessary to supply water to the hot water circulation circuit 1 at the start of use or the like, the cover 17 and the opening / closing lid 15 are removed as shown in FIGS. 3A and 3B, and the cover is opened as shown in FIG. If the water inlet 5c is inserted with the body 17 inverted, water can be easily supplied from the small water inlet 5c by serving as a funnel.

[0019]

According to the present invention, if the cover is fixed by a fixing means so as to cover the opening of the housing, the opening can be closed by the cover so that the opening / closing lid can be hidden. It can prevent mischief. Then, if the cover is removed from the housing and turned upside down and inserted into the water supply port, the cover functions as a funnel and water can be easily supplied.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an example of an embodiment of the present invention.

FIG. 2 is a cutaway side view of a main part.

FIG. 3 is an explanatory view illustrating a use state.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 hot water circulation circuit 2 hot water boiler 3 first heat exchanger 5 makeup water tank 6 radiator 7 hot water outgoing pipe 8 hot water return pipe 9 housing

Continuing from the front page (72) Inventor Kenichi Iwasaki 2833 Imafuku, Kawagoe-shi, Saitama Sunpot Co., Ltd. (56) References Japanese Utility Model Sho 62-156710 (JP, U) Japanese Utility Model Sho 55-126120 (JP, U.S.A.) U) Shokai Sho 49-72032 (JP, U) Shokai Sho 61-54594 (JP, U) Registered utility model 3013696 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24D 3/10

Claims (1)

(57) [Claims] 1. A makeup water tank having a makeup water tank interposed in a hot water circulation circuit provided in a housing, an opening / closing lid attached to a water supply port of the makeup water tank, and an opening provided on an upper surface of the housing facing the water supply port. In a hot water heater provided with a tank , a cover is provided to cover the opening, the cover having a base having an inner diameter larger than the outer diameter of the opening / closing lid, and an upper portion having an outer diameter smaller than a water supply port of the makeup water tank. Wherein the cover is detachably fixed so as to cover the opening of the housing by fixing means, and the hot water heating is provided with a makeup water tank.
Machine .