JPH11294612A - Air vent device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air vent device capable of discharging only surplus air without discharging water or hot water at all, and being easily and cheaply manufactured. SOLUTION: An air vent device consists of a casing 21 in which an ebb and flood chamber 21A provided with a hot water entrance 22 for receiving hot water is provided at the lower part, a ventilation chamber 21B provided with an atmosphere port 24 for drawing surplus air is provided at the right place above the ebb and flood chamber 21A, and a connecting hole 21h connecting the ebb and flood chamber 21A to the ventilation chamber 21B is provided, a spherical float 35 put into the ebb and flood chamber 21A floating in the water, and a moving body 30 provided with an opening and closing valve 32V provided above the spherical float 35 so that it can freely rise and fall, and is usually lowered by an energizing means, for example, a spring 30S and elevated by the buoyancy of the spherical float 35 and which can freely open and close the connecting hole 21h. When the moving body 30 is lowered, the connecting hole 21h is open, and when the moving body 30 is elevated, the connecting hole 21h is closed by the operating and closing valve 32V.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an air venting device. More specifically, the present invention relates to an air venting device that releases only air generated by heating water in a hot water storage tank to the atmosphere.

[0002]

FIG. 5 is a longitudinal sectional view of a hot water storage tank 1. As shown in FIG.
In the figure, reference numeral 1 indicates a hot water storage tank. The hot water storage tank 1 has a built-in heater 5 for boiling water into hot water. The hot water storage tank 1 is a heating unit for boiling water into hot water and also a hot water storage unit for storing hot water.
A water supply port 7 is provided at a lower part of the hot water storage tank 1, and a tap hole 6 is provided at an upper part of the hot water storage tank 1. Hot water storage tank 1
A water supply pipe 13 for supplying water to the hot water storage tank 1 is connected to the water supply port 7. A hot water supply pipe 15 for sending and receiving hot water from the hot water storage tank 1 is connected to the hot water outlet 6 of the hot water storage tank 1. The symbol K indicates a safety valve. The safety valve K is normally closed, and is opened when the pressure inside the hot water storage tank 1 becomes abnormal pressure, and is used to eliminate the abnormal pressure. Above the hot water storage tank 1, a conventional air vent device 120 is attached.

FIGS. 6 and 7 show a conventional air venting device 12.
0 is a longitudinal sectional view. As shown in FIGS. 6 and 7, in the conventional air venting device 120, a float 135 is placed inside a casing 121, and the on-off valve 132V opens and closes in conjunction with the float 135 moving up and down by buoyancy. It has become. Specifically, the casing 121 is
It is composed of 121A and a ventilation room 121B, and a communication hole 121h is formed between the drying room 121A and the ventilation room 121B.
A hot water inlet 122 for receiving hot water is formed in the lower part of the full-dry room 121A. At the upper part of the ventilation chamber 121B, an atmosphere port 124 for removing excess air is formed. A float 135 that floats on water is placed in the drying room 121A. A support pin 101 is mounted on the upper surface of the float 135. On the other hand, a moving body 130 is attached to the communication hole 121h so as to be vertically movable. In this moving body 130, an upper opening / closing valve 132V and a lower hanging portion 103 are connected by a connecting rod 104. Reference numeral 130S denotes a spring, and the moving body 130 is constantly urged upward by the spring 130S. A lever bar 102 is engaged between the support pin 101 and the inner upper wall of the drying room 121A, and the engaging portion 103 is engaged at an intermediate portion of the lever bar 102. Therefore, the contact point between the lever bar 102 and the inner upper wall of the drying room 121A is a fulcrum, the contact point between the lever bar 102 and the support pin 101 is a power point, and the contact point between the lever bar 102 and the hook 103 is an action point. Based on the principle of leverage, the moving body 130 descends due to the moment due to the weight of the float 135.

In the air venting device 120, when the heater 5 is energized after the hot water storage tank 1 is filled with water, the heater 5 radiates heat, and the heat turns the water into hot water. As water warms, its density decreases and its volume increases.
Further, when water is heated, air dissolved in the water turns into a gas to be generated.

As shown in FIG. 6, when a small amount of water has entered the drying room 121A and the float 135 is descending, the gas generated from the heated water flows into the drying room 121A and the communication hole 12A.
After 1 hour, the air passes through the ventilation chamber 121B and passes through the air opening 124 to the atmosphere. On the other hand, as shown in FIG. 7, when the water inside the hot water storage tank 1 enters the inside of the drying chamber 121A and the float 135 rises due to its buoyancy, the moving body 130 is released from the moment of the float 135 and is moved by the spring 130S. Rise. Accordingly, the communication hole 121h is provided with the opening / closing valve of the moving body 130.
Since it is closed by 132V, the water or hot water inside the hot water storage tank 1 is not discharged from the atmosphere port 124.

[0006]

However, in the conventional air bleeder 120, when the float 135 is raised, the float 135 is raised from the portion where the support pin 101 is attached by the action of the spring 130S, and the float 135 is lifted.
When descending, its own weight and the spring 130S which is contrary to its own weight
Therefore, the float 135 is finally lowered at the portion where the support pin 101 is attached. For this reason, float 13
5 does not move up and down vertically, but moves up and down while tilting obliquely, so that the float 135 is caught on the inner wall of the drying room 121A, and the float 135 does not move up and down smoothly. For this reason, there is a problem that water or hot water inside the hot water storage tank 1 is discharged from the air port 124, and conversely, excess air does not escape from the air port 124. Further, since the conventional air bleeding device 120 is configured based on the principle of leverage, it must be manufactured in consideration of a fulcrum, a power point, an action point, and the like, and the number of parts increases. For this reason, there is a problem that it is troublesome to manufacture and expensive.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air bleeding device which can remove only excess air without discharging water or hot water at all, and which can be easily and inexpensively manufactured.

[0008]

According to a first aspect of the present invention, there is provided an air bleeder provided with a full-dry room provided at a lower portion with a hot-water inlet for receiving hot water, and an air vent for removing excess air is provided at an upper portion of the full-dry room. A casing provided with a communication hole that communicates between the drying chamber and the ventilation chamber is provided, and a spherical float floating in water, which is placed inside the drying chamber, Above the spherical float, it is provided so as to be able to vertically move up and down, and is constantly lowered by a biasing means, is provided with an open / close valve which can be opened and closed in the communication hole, rises by the buoyancy of the spherical float, and has a reverse funnel-shaped lower part. The communication hole is open when the moving body is lowered, and the communication hole is closed by the on-off valve when the moving body is raised. Claim 2
The air vent device is provided with a dry room provided with a hot water inlet for receiving hot water at a lower portion, and a vent room provided at an appropriate position with an air outlet for removing excess air is provided at an upper portion of the dry room. And a casing provided with a communication hole communicating between the ventilation chamber and the ventilation chamber, and a spherical float that is put in the full-dry room, is constantly lowered by the urging means, floats in water in a spherical shape, and rises by buoyancy. When the spherical float descends, the communication hole is open, and when the spherical float rises, the communication hole is closed and closed by the spherical float.

[0009]

Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are longitudinal sectional views of an air vent device 20α according to the first embodiment of the present invention. As shown in FIGS. 1 and 2, the air venting device 20α according to the first embodiment has a spherical float 35 and a moving body 30 provided inside a casing 21.

The casing 21 is made of, for example, metal or resin and has excellent corrosion resistance, but the material is not particularly limited. This casing 21 is located in the lower dry room.
21A and the upper ventilation chamber 21B are communicated by a communication hole 21h. A hot water inlet 22 for receiving hot water is formed in the lower part of the full room 21A. An air port 24 is formed at an appropriate position such as the upper portion or side portion of the ventilation chamber 21B.

A spherical float 35, which is spherical and floats on water, is placed in the drying room 21A of the casing 21. The spherical float 35 is made of resin and has excellent corrosion resistance, and its specific gravity is smaller than that of water. The material of the spherical float 35 is not particularly limited as long as it has a hollow structure or the like and has a structure floating in water even if the material is metal. Furthermore, the spherical float 35 may have a porous structure or the like, and it is sufficient that the spherical float 35 has a specific gravity smaller than that of water and floats on water.

Above the spherical float 35, the moving body 30
Are provided so as to be able to move up and down. This moving body 30
The material is, for example, metal or resin and has excellent corrosion resistance, but the material is not particularly limited. This moving body 30
Has a stopper 31 at the top of a rod-shaped main body 34, an inverted funnel-shaped umbrella 33 at the lower end of the main body 34, and an on-off valve 32V at an intermediate portion of the main body 34. Mobile 30
The stopper 31 is hooked on a seat around the communication hole 21h so as not to fall. The stopper 31
A ventilation hole 31h is formed to penetrate the upper and lower sides, and even when the stopper 31 is hooked on the seat of the communication hole 21h, the ventilation hole 31h communicates between the full-dry room 21A and the ventilation room 21B.

The stopper 31 of the moving body 30 and the ventilation chamber 21
A spring 30S is attached between the inner upper wall of B and the upper wall so as to be able to expand and contract. The moving body 30 is urged downward by the spring 30S.

As described above, the air bleeding device 20α of the first embodiment does not apply the principle of leverage, has a simple structure, and has a small number of components, so that it can be manufactured at low cost.

Next, the air vent device 20α of the first embodiment
The operation and effect of will be described. First, instead of the conventional air venting device 120, a first
The air vent device 20α of the embodiment is attached. In addition,
The air bleeding device 20α of the first embodiment is not limited to the hot water storage tank 1 shown in FIG. 5, but also the hot water storage tank shown in the rapid heating type hot water storage type electric water heater described in Japanese Patent Application Laid-Open No. 9-280655. It may be attached to the upper part of a hot water storage tank of a system in which hot water is sequentially stored from the upper part in the inside, or may be attached to various tanks capable of heating water and boiling it up. Furthermore, it may be attached not only to the hot water storage tank 1 but also to an appropriate place of the hot water supply pipe 15.

When water is not being supplied to the hot water storage tank 1, the moving body 30 is lowered by the spring 30S, and the communication hole 21h is open. When the water is supplied to the hot water storage tank 1, as the water level rises, the air inside the hot water storage tank 1 flows from the hot water inlet 22 into the drying room 21 </ b> A and the communication hole 21.
h and the vent hole 31h of the stopper 31 and the ventilation chamber 21B
Through the atmosphere opening 24.

When the hot water storage tank 1 is further supplied with water, as shown in FIG. 1, water inside the hot water storage tank 1 infiltrates from the hot water inlet 22 to the drying room 21A. For this reason, the spherical float 35
Float due to its buoyancy. As shown in FIG. 2, when the buoyancy of the spherical float 35 overcomes the urging force of the spring 30S, the moving body 30 rises. Therefore, the moving body 3
The communication hole 21h is closed by the on-off valve 32V of 0, and the water in the hot water storage tank 1 does not enter the full-dry room 21A any more.

Next, when the water inside the hot water storage tank 1 is heated by the heater 5 or the like, the air dissolved in the water turns into gas and rises inside the hot water storage tank 1, from the hot water inlet 22 to the drying room 21 A. Accumulate. Furthermore, when air accumulates inside the dry room 21A, the air
The water surface is pushed down and descends. The spherical float 3
5 is spherical, and the umbrella portion 33 of the moving body 30 has an inverted funnel shape, so that the spherical float 35 does not come into contact with the inner wall of the drying room 21A, but always follows the vertical center line of the umbrella portion 33 and the water surface descends , Descend vertically. Therefore, the moving body 30 is lowered by the urging force of the spring 30S. And
Since the opening / closing valve 32V of the moving body 30 is opened and the communication hole 21h is open, the air in the dry room 21A is released from the communication hole 21h and the ventilation chamber 21h.
It passes through B and exits from the atmosphere port 24.

When the air that has pushed down the water surface of the dry room 21A escapes from the atmosphere port 24, the water surface of the dry room 21A rises.

The spherical float 35 has a spherical shape and the umbrella portion 33 of the moving body 30 has an inverted funnel shape.
Is always in contact with the inner wall of the dry room 21A,
Ascends vertically along the vertical center line with the rising water surface. Therefore, the moving body 30 is smoothly pushed up by the buoyancy of the spherical float 35. Thereafter, the above operation is repeatedly performed. However, according to the air venting device 20α of the first embodiment, there is an effect that the on-off valve 32V of the moving body 30 is always smoothly opened and closed.

As described above, according to the air venting device 20α of the first embodiment, there is an effect that only the surplus air can be vented without discharging any water or hot water.

Next, an air venting device 20β according to a second embodiment of the present invention will be described. FIG. 3 and FIG.
Both are longitudinal sectional views of the air vent device 20β of the second embodiment. As shown in FIGS. 3 and 4, the air vent device 20β of the second embodiment has a spherical float 35 provided inside a casing 21.

The casing 21 is made of, for example, metal or resin and has excellent corrosion resistance, but the material is not particularly limited. This casing 21 is located in the lower dry room.
21A and the upper ventilation chamber 21B are communicated by a communication hole 21h. A hot water inlet 22 for receiving hot water is formed in the lower part of the full room 21A. An air port 24 is formed at an appropriate position such as the upper portion or side portion of the ventilation chamber 21B.

A spherical float 35, which is spherical and floats on water, is placed in the drying room 21A of the casing 21. The spherical float 35 is made of resin and has excellent corrosion resistance, and its specific gravity is smaller than that of water. The spherical float 35 has an inner diameter smaller than the inner diameter of the drying room 21A, and is larger than the inner diameter of the communication hole 21h.
The material of the spherical float 35 is not particularly limited as long as the material is, for example, metal, as long as the structure is such that the inside is hollow and floats on water. Furthermore, the spherical float 35 may have a porous structure or the like, and it is sufficient that the spherical float 35 has a specific gravity smaller than that of water and floats on water.

A spring 30S is mounted between the spherical float 35 and the upper inner wall of the ventilation chamber 21B so as to be able to expand and contract. Due to the spring 30S, the spherical float 35 is always lowered, and the communication hole 21h between the full chamber 21A and the ventilation chamber 21B communicates.

As described above, the air bleeding device 20β of the second embodiment does not apply the leverage principle, has a simpler structure than the air bleeding device 20α of the first embodiment, and has a small number of components, so that it is simple and inexpensive. This has the effect of being able to be manufactured at a high speed.

Next, the air vent device 20β of the second embodiment
The operation and effect of will be described. First, instead of the conventional air venting device 120, a second
The air vent device 20β of the embodiment is attached. In addition,
The air bleeding device 20β of the second embodiment is not limited to the hot water storage tank 1 shown in FIG. 5, but also the hot water storage tank shown in the immediate heating type hot water storage type electric water heater described in Japanese Patent Application Laid-Open No. 9-280655. It may be attached to the upper part of a hot water storage tank of a type in which hot water is sequentially stored from the upper part in the inside, or it may be attached to various tanks that heat water and boil it up. Furthermore, it may be installed not only in the hot water storage tank 1 but also in a suitable place of the hot water supply pipe 15.

When water is not being supplied to the hot water storage tank 1, the spherical float 35 is lowered by the spring 30S, and the communication hole 21h is open. Then, as water is supplied to the hot water storage tank 1, as the water level rises, the air inside the hot water storage tank 1 enters the dry room 21A from the hot water inlet 22, passes through the communication hole 21h, passes through the ventilation chamber 21B, and enters the air outlet 24. Get out.

When the hot water storage tank 1 is further supplied with water, as shown in FIG. 3, water inside the hot water storage tank 1 flows into the full-dry room 21A from the hot water inlet 22. For this reason, the spherical float 35
Float due to its buoyancy. As shown in FIG. 4, when the buoyancy of the spherical float 35 overcomes the urging force of the spring 30S, the spherical float 35 rises. Therefore, the communication hole 21h is closed and closed by the spherical float 35, and the water in the hot water storage tank 1 does not infiltrate into the drying room 21A any more.

Next, when the water inside the hot water storage tank 1 is heated by the heater 5 or the like, the air dissolved in the water turns into a gas, rises inside the hot water storage tank 1, and flows from the hot water inlet 22 to the drying room 21A. Accumulate in Furthermore, when air accumulates inside the full-dry room 21A, this air causes
The water surface of A is pushed down and descends. The spherical float 35 is spherical and the spring 30S is a spherical float 35
Since the spherical float 35 is attached to the upper part of the container, the spherical float 35 does not come into contact with the inner wall of the drying room 21A and descends vertically as the surface of the water descends. Then, since the spherical float 35 descends and communicates with the communication hole 21h, the air in the drying chamber 21A passes through the communication hole 21h and the ventilation chamber 21B, and escapes from the atmosphere port 24.

When the air that has pushed down the water surface of the dry room 21A escapes from the atmosphere port 24, the water surface of the dry room 21A rises.

Since the spherical float 35 is spherical, and the spring 30S is mounted on the upper part of the spherical float 35, the spherical float 35 rises vertically without contacting the inner wall of the full room 21A due to its buoyancy. Communication hole
By contacting 21h, the communication hole 21h is closed. Thereafter, the above operation is repeatedly performed. However, according to the air venting device 20β of the second embodiment, there is an effect that the on-off valve 32V of the moving body 30 is always smoothly opened and closed.

As described above, according to the air bleeding device 20β of the second embodiment, the air bleeding device 20β of the first embodiment is used.
As with α, it is possible to remove only the excess air without discharging any water or hot water. In addition, the air vent device 20β of the second embodiment has an effect that it can be easily manufactured.

[0034]

According to the air venting device of the first aspect, the on-off valve smoothly opens and closes, and only the surplus air can be vented without discharging any water or hot water. According to the air venting device of the second aspect, the opening / closing valve smoothly opens and closes, only the surplus air can be vented without discharging any water or hot water, and it can be manufactured easily and inexpensively.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an air vent device 20α according to a first embodiment.

FIG. 2 is a longitudinal sectional view of the air vent device 20α according to the first embodiment.

FIG. 3 is a longitudinal sectional view of an air vent device 20β according to a second embodiment.

FIG. 4 is a longitudinal sectional view of an air vent device 20β of a second embodiment.

FIG. 5 is a longitudinal sectional view of the hot water storage tank 1.

FIG. 6 is a longitudinal sectional view of a conventional air vent device 120.

FIG. 7 is a longitudinal sectional view of a conventional air vent device 120.

[Explanation of symbols]

 Reference Signs List 20α Air release device 20β Air release device 21A Drying room 21B Ventilation room 21h Communication hole 22 Hot water inlet 24 Atmospheric opening 30 Moving body 31h Vent hole 30S Spring 32V Open / close valve 35 Spherical float

Claims (2)

[Claims] 1. A dry room provided with a hot water inlet at a lower portion for receiving hot water, and a ventilation room provided at an appropriate position with an air outlet for removing excess air is provided at an upper portion of the dry room. And a casing provided with a communication hole communicating between the ventilating chamber, a spherical float floating in water, which is placed in the inside of the drying chamber, and provided vertically above and below the spherical float so as to be vertically movable. The communication hole is provided with an open / close valve that can be opened and closed, and a lower portion is formed of a movable body formed in an inverted funnel shape. The air vent device is characterized in that the communication hole is open when the body descends, and the communication hole is closed and closed by the on-off valve when the moving body rises. 2. A dry room provided with a hot water inlet at a lower portion for receiving hot water, and a vent room provided at an appropriate position with an air outlet for removing excess air is provided at an upper portion of the dry room. And a casing provided with a communication hole communicating between the ventilation chamber and the ventilation chamber, and a spherical float that is put in the full-dry room, is constantly lowered by the urging means, floats in water in a spherical shape, and rises by buoyancy. When the spherical float is lowered, the communication hole is open, and when the spherical float is raised, the communication hole is closed and closed by the spherical float.