JP3355859B2 - 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 water supply tank incorporated in a heating boiler or the like.

[0002]

2. Description of the Related Art A heating boiler or the like incorporates a water supply tank, which is also called a cistern tank, for accumulating hot water supplied to a load and separating gas and liquid. This type of water supply tank is provided with a water inlet for supplying water to the tank. For example, Japanese Unexamined Patent Publication No. 2-75831 and Japanese Utility Model Publication No. Sho 63-30921 disclose a water supply tank 10 with an inlet 101 facing out of the machine as shown in FIG.
2 is shown. A water receiving tray 103 is attached to the rim of the water inlet 101 in a flange shape, and water spilled at the time of water injection or water overflowing from the water inlet due to overflow is received by the water receiving tray 103.
It is designed so that it does not overflow into the cabin. If the water receiving tray 103 alone has a small volume and does not provide sufficient countermeasures against water leakage, a drain port is provided in the water receiving tray 103 so that the water can be drained to a predetermined place using a drain hose.

[0003]

In the conventional water supply tank as described above, components such as a water receiving tray 103 and a drain hose are required to prevent water leakage near the water inlet 101.
The structure is complicated, and it is a cause of increasing the cost. Further, since the water in the tank circulates through the pipes connected to the heat exchanger and the load, scales and the like generated in the pipes and the like accumulate. Foreign matter can be prevented,
Circulation of scale and the like generated in the tank into the pipe could not be prevented, and the accumulated circulation of the scale and the like sometimes caused a trouble in the heat exchanger and a failure in the pump and the like.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a function of filtering both water injected from a water inlet and water circulating inside. An object of the present invention is to provide a water supply tank having a simple configuration, and to obtain a water supply tank which is cost-effective and can cope with water leakage near a water inlet by the structure of the tank itself.

[0005]

A water inlet for water injection.
And a water inlet for supplying water to the outside, a water inlet and a water inlet
And the inside of the cylindrical filter
With a partition filter provided to partition the space
You.

[0006] The partition filter is a cylindrical filter.
It is provided in the middle.

[0007] Further, the cylindrical filter is provided for the water inlet.
It is attached so that it can be inserted and removed.

Further, the surface provided with the water inlet is
Wider than the surface where the water inlet is provided,
The water receiving part is provided on the surface where the water is received.

[0009]

When a cylindrical filter is inserted from the water inlet so that the tip thereof reaches the water inlet, both the water injected from the water inlet and the circulating internal water are filtered by the cylindrical filter. That is, the water injected from the water inlet is filtered by the cylindrical filter on the water injection side of the partition filter,
The internal water exiting from the water supply port is filtered by the cylindrical filter on the water supply port side of the partition filter.

Further, when a cylindrical filter is inserted and mounted from the water inlet so that the tip thereof reaches the water inlet, both the water injected from the water inlet and the circulating internal water are filtered by the cylindrical filter. .

Further, since the flat area of the upper surface having the water inlet is widened and the water inlet is surrounded by a protruding structure,
The volume of the portion surrounded by the protruding structure can be secured even if the protruding amount of the protruding structure is reduced, and water leakage during water injection can be received in a wide range.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. FIG. 1 is a longitudinal sectional view showing a configuration of a water supply tank according to the first embodiment.
FIG. 2 is a plan view of the same. This water supply tank is incorporated in a hot water boiler or the like, is connected to a heat exchanger or a load by piping, and performs water supply to these and separation of gas and liquid.
It is configured as an integral molded product by blow molding of plastic.

As shown in FIG. 1, the water supply tank is formed in such a manner that a lower part having a small flat area with respect to the upper part is bulged downward from one side so that a plane area of the upper surface is as large as possible with respect to a predetermined volume. Have been. On one side of the upper part, a water level check window 1 is formed, which is formed by swelling both the inside and the outside in a semicircular shape in the vertical direction, and the upper edge of the water level checking window 1 is partially raised on the upper surface. A water inlet 2 is formed. A series of protruding structures 3 are formed in a rib shape on a peripheral edge of the upper surface so as to surround the water injection port 2 except for a part thereof, and a portion surrounded by the protruding structure 3 is configured as a water receiving portion 4. A drain pipe 5 is formed on the base side of the water inlet 2, one end of which communicates with the inside of the tank, and the other end of which faces the upper surface without the protruding structure 3.

In the lower part of the water supply tank, a water supply port 6 is formed at the bottom thereof so that the center line of the water inlet 2 coincides with the center line. The water supply port 6 communicates with the outside by a connection cylinder 7 protruding outside. A return port 8 is formed in a lower side wall of the water supply tank. The return port 8 also communicates with the outside by a connection cylinder 9 projecting outside. The water supply port 6 and the return port 8 are connected by a pipe connecting to a heat exchanger and a load,
The water in the tank will circulate through the pipe.

A single cylindrical filter 10 is attached to the water inlet 2 and the water inlet 6 so that the filter 10 can be inserted into and removed from the water inlet 2. The cylindrical filter 10 includes a main body 11 having a length corresponding to a distance between the water inlet 2 and the water supply port 6 and having a mesh body which has an open end at both ends. In order to provide rigidity, a plastic basket-shaped frame 13 is provided.
Is housed inside. The cylindrical filter 10 inserted into the tank from the water inlet 2 has its tip inserted into a ring-shaped engaging recess 14 formed around the water inlet 6 and stopped. In this state, the upper end of the cylindrical filter 10 is fitted into a position that does not hinder the attachment of the cap (not shown) to the water inlet 2. Therefore, the cylindrical filter 10
The mounting state is stable with both ends supported in the tank.

The water supply tank having the above-described structure is incorporated in a heating boiler or the like with the upper surface having no protruding structure 3 in a direction in which water can be dropped. One side of the protruding structure 3 is directed to a side where an electronic circuit or other structure having low resistance to water is provided. Water is injected from the water injection port 2 to the water supply tank in which predetermined piping has been completed. Even if water overflows around the water inlet 2 during water injection, this water can be received by a large area on the upper surface. Even if a considerable amount of water is spilled, the water receiving portion 4 has a flat area and is received because the volume is maintained, and is drained to the side where the projecting structure 3 is not problematic. By making the upper surface of the tank wider, the amount of protrusion of the protrusion structure 3 can be reduced accordingly. Since the water level confirmation window 1 is bulged inside and outside, it is easy to take light and the water level can be easily confirmed.

A predetermined amount of water may be injected while checking the water level in the tank. Water injected from the water inlet 2 is filtered on the upper side of the partition filter 12 of the cylindrical filter 10 to prevent foreign matter from entering the tank. The water in the tank returns to the return port 8 via the pipe from the water supply port 6 by the operation of the heating boiler or the like, and circulates. Water in the tank toward the water supply port 6 is also filtered under the partition filter 12 of the cylindrical filter 10, so that even if scale or the like is accumulated in the tank, entry into the heat exchanger or the pump is avoided. You. If the water in the water tank overflows,
Is drained in a predetermined direction by a drain pipe 5 provided at a base portion of In addition, since the water supply port 6 and the return port 8 are provided at the lower part of the water supply tank, even when the water injection is delayed without noticing that the water level has dropped, the water level at the lower side is maintained. You do not have to be directly connected to driving obstacles.

Embodiment 2 The water supply tank of Embodiment 2 shown in FIG. 3 has a configuration in which the center line of the water inlet 2 and the center of the water inlet 6 are shifted and these are straddled by a single cylindrical filter 10. The other configuration is the same as that shown in the first embodiment. Therefore, the same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

When the water supply tank is formed obliquely with the water inlet 2 near the front, depending on the partner device to be installed, the convenience may be improved. In order to cope with this, the water supply port 2 of the water supply tank of the second embodiment is inclined with respect to the water supply port 6. The engagement recess 14 formed around the water supply port 6 is also formed with a similar inclination. As shown in FIG. 3, the cylindrical filter 10 is mounted so as to diagonally connect the water inlet 2 and the water inlet 6 in the tank. Otherwise, the configuration and functions are the same as those of the first embodiment, and a description thereof will be omitted.

[0020]

The foreign matter mixed in the water injected from the water inlet is filtered by the cylindrical filter on the water injection side from the partition filter. A simple water supply tank having a function of filtering both the water injected from the water inlet and the circulating internal water with a single cylindrical filter is obtained.

Further, a simple water supply tank having a function of filtering both the water injected from the water inlet and the circulating internal water with a single cylindrical filter can be obtained.

Further, since the plane area of the upper surface having the water inlet is widened and the water inlet is surrounded by the projecting structure,
The volume of the portion surrounded by the protruding structure can be ensured even if the protruding amount of the protruding structure is reduced, and a simple and cost-effective water supply tank having a configuration capable of receiving a wide range of water leakage during water injection can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a water supply tank as one embodiment of the present invention.

FIG. 2 is a plan view of the water supply tank of FIG. 1;

FIG. 3 is a longitudinal sectional view showing a water supply tank according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a main part showing a configuration of a conventional water supply tank.

[Explanation of symbols]

 Reference Signs List 2 water inlet 3 projecting structure 4 water receiver 6 water inlet 10 cylindrical filter 11 main body 12 partition filter 14 engaging recess

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24D 3/10

Claims (4)

(57) [Claims] 1. A water inlet for supplying water, a water inlet for supplying water to the outside, and a cylindrical filter connecting the water inlet and the water inlet.
When, et provided so as to partition the interior space of the tubular filter
Feed tank characterized by having a separated filter
H. 2. A partition filter is provided in the middle of a cylindrical filter.
The water supply tongue according to claim 1, wherein the water supply tongue is provided.
H. 3. A cylindrical filter is inserted with respect to a water inlet.
Claim 1 and Claim 2 characterized by being mounted so that
The water supply tank according to claim 2. 4. A water supply port is provided on a surface provided with a water supply port.
The water inlet is provided wider than the surface
The surface is provided with a water receiving part.
The water supply tank according to any one of claims 1 to 3.