JP3329231B2 - Gas-liquid exchange structure when supplying liquid to the liquid supply 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 gas-liquid exchanging structure at the time of liquid supply of a liquid supply tank, and is used, for example, for a water supply tank for supplying a constant amount of water to a humidifier.

[0002]

2. Description of the Related Art A humidifier heats and evaporates water or atomizes it by ultrasonic vibration or the like, and humidifies by diverging steam or mist droplets around the humidifier. In order to stably diffuse these vapors and mist droplets without excess and deficiency, it is important to be able to supply water so that a constant amount of water is always supplied to the steam generation unit and the atomization unit. To satisfy this, the above-described liquid supply tank is used. It is also used for other uses, such as oil supply for oil stoves.

Such a liquid supply tank is well known. As shown in FIG. 20, an outer opening of a water supply port d provided in a cap body c detachably attached to an opening b of a tank body a. Is set downward, and the normally-closed valve e provided at the water supply port d is pushed and opened, thereby introducing outside air until the outflow water w closes the outer opening d1 of the water supply port d as shown by a virtual line. The liquid is supplied while replenishing the liquid by the consumption amount so that the content liquid flows out.

By the way, in such a liquid supply tank, air introduction noise is generated when air is introduced due to outflow of a liquid such as water. This sound is particularly loud when the liquid supply tank is mounted and the liquid supply is started, but even when replenishing after the liquid supply once reaches a predetermined amount, it is a relatively loud and worrisome sound such as gurgling. It is unpleasant due to people or surrounding circumstances because it is different from normal life sounds,
It gets in the way.

[0005] Japanese Patent Application Laid-Open No. 9-4885 discloses a humidifier which solves such a problem. As shown in FIG. 9, this is an heavenly shape having a plurality of openings f, and a silencer cylinder g is provided so as to surround the normally closed valve installation portion of the water supply port d of the cap body c from the inside. Due to the pressure loss when the water inside flows out to the water supply port d through the plurality of openings f, the flow velocity of the water flowing out to the water supply port d is reduced, and the burdling noise is eliminated. Further, the plurality of openings f are provided with a height difference from each other, so that the flow rate of the water can be reduced without disturbing the outflow of the water instead of the water and the air. A slit-shaped opening f1 is also provided on the outer peripheral wall of the projection, so that it is possible to avoid water supply failure due to surface tension of water and water supply failure due to impurities such as dust.

By the way, the silencer cylinder g has a lower end opening g1 screwed to the cap body c, and a gas-liquid switching chamber h in which the outflowing water and the introduced air are switched between each other.
Is formed in a state of partitioning the tank body a, and the water in the tank body a flows into and fills through a plurality of openings f, f1 having a difference in height from the time when the tank body a is turned upside down. When the liquid supply tank is mounted in the use state, the supply of water is started, and then the supply of water is performed.

[0007]

However, at the time of initial water supply by the above-mentioned conventional water supply tank and subsequent replenishment of water, the water in the tank body a has a limited size and number of openings f, f1. , While the outside air introduced from the water supply port d reaches the inside of the ceiling in the gas-liquid exchange chamber h, and accumulates here, the outside air of the uppermost opening f1 It is introduced into the tank main body a through a portion corresponding to the amount of stored air or a plurality of openings f and f1 in a range corresponding to the amount of stored air. As shown in FIG. 5, the outside air to be introduced into the tank body a through the opening f1 and the water which is going to flow into the gas-liquid exchange chamber h through the opening f1 as shown by the solid arrow collide with each other. The outside air is with water Re is unreasonable to being introduced into the apertures f1 or the like through the tank body a while instead. Further, since the normally closed valve is in the open position at the position where the openings f and f1 of the sound deadening cylinder are provided, it prevents the flow of the effluent and the introduced outside air by the openings f and f1. Therefore, there is a strong tendency that the bubbles of the outside air which have grown to a size having a sufficient buoyancy force float up at a stretch and are introduced into the tank body a, and the gurgling noise due to the introduction of the outside air is not so much eliminated.

It is an object of the present invention to provide a gas-liquid replacement structure at the time of liquid supply to a liquid supply tank having a simple structure in which gas-liquid replacement can be achieved quietly and smoothly.

[0009]

Means for Solving the Problems Claims 1, 2, 3, 4,
The gas-liquid replacement structure at the time of liquid supply of the liquid supply tank according to the fifth aspect of the invention is, similarly to the conventional one, installed with the water supply port provided in the cap body attached to the opening of the tank body downward, and the water supply port is always By opening and closing the valve, the liquid is replenished by the consumption amount so that the content liquid flows out with the introduction of outside air until the outflow water closes the outer opening of the water supply port. In addition, the cover body covers the normally closed valve of the water supply port from the side to the top, guides the outflow of liquid and the introduction of outside air and replaces it smoothly, so that the outflow of liquid can be achieved quietly and smoothly. can do.

[0010] The invention of claim 1 particularly comprises the peripheral wall in which the cover body is integrally formed with the cap body and the ceiling wall which shares the normally closed valve, so that the guide for gas-liquid exchange is provided without any special member. a can, not a lot the number of parts, can be provided at a low cost. In addition, the ceiling wall of the cover body moves up and down with the opening and closing of the normally closed valve, and at the same time the normally closed valve is opened, the ceiling wall moves to the far side of the tank body, thereby enclosing the enclosed space by the cover body. It expands to create a negative pressure state temporarily, and the liquid in the tank body and the introduced outside air work to draw into the enclosed space defined by the cover body. This facilitates the introduction of outside air, and the liquid supply with the exchange of gas and liquid can be achieved more smoothly and quietly.

According to a second aspect of the present invention, a cover is provided on the normally closed valve so as to cover the normally closed valve from the side to the upper portion, and the cover is moved up and down as the normally closed valve is opened and closed. A liquid outlet is formed between the inner surface of the cap and the inner surface of the cap so as to be separated from and in contact with the inner surface of the body. In addition to exhibiting the same operational effects as the vertically moving ceiling wall portion which shares the normally closed valve according to the first aspect of the present invention, the lower end of the cover body and the cap body together with the opening of the normally closed valve are provided. The annularly continuous gap between the valve seat and the inner surface makes it easier for the liquid in the tank body to flow into the water supply port, and this forms a cylindrical membrane flow that flows into the water supply port and the center of the flow. Secure a passage through which outside air is introduced into the Since easily reached join the club, the supply of the liquid with the turnover of the gas-liquid, than the invention of claim 1 can be gently achieved more smoothly.

[0012] The invention of claim 3 is the invention of claim 2, further a slit inlet portion of the outside air is provided so as to extend upwardly from the lower end or a position close to that of the cover body, the invention of claim 2 In addition to the slit
Introduced into the tank body of outside air in small bubbles
At the time of replenishment that acts as a mouth and the outflow rate of the liquid is relatively small
In addition, it is not introduced even at the time of initial water supply where the outflow rate increases
It is possible to effectively suppress the gurgling sound caused by the air.

According to a fourth aspect of the present invention, in any one of the second and third aspects of the present invention, further, the inner surface of the cap body further includes:
A shutter wall is provided which fits on the peripheral wall of the cover body over the entire vertical movement range thereof, and the shutter wall closes the annularly continuous gap according to the third aspect of the present invention. By increasing the degree of negative pressure generated in the enclosed space when the cover body moves upward , the liquid in the tank body and the outside air introduced by the cover body remain as one member.
Since it works by calling into the enclosed space by the cover body,
Outflow of liquid in tank body during initial liquid supply and accompanying
The introduction of outside air can be promoted .

According to the invention of claim 5, in particular, a passage communicating from the outside to the water supply port provided with the normally closed valve shares the inside opening.
That the liquid is divided into the outlet passage and an air introducing passage, characterized in that as than outside the opening position of the outer side liquid outlet opening position of the air induction passage located normally closed side Yes, the liquid in the tank body flows out until the effluent exceeds the outer opening height of the water supply port, reaches the outer opening position of the air introduction passage, and no outside air is introduced, but the effluent is consumed. Then, the outside opening of the air introduction passage opens first and the outside air enters the outside air introduction passage in the water supply port and tries to rise, and at the same time, the liquid does not come into contact with the introduced outside air through the liquid outflow passage of the water supply port. Since the liquid is replaced, replenishment accompanying the consumption of the liquid can be achieved extremely smoothly and extremely quietly. Moreover, when combined with the invention from the invention as claimed in claim 1 of claim 5 4, they Ru can exhibit effects which combined Minato.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments in which the present invention is applied to a humidifier will be described below with reference to FIGS.

(Embodiment 1) A humidifier according to Embodiment 1 has an overall configuration as shown in FIG. 1 and is made of a synthetic resin bottom member 2 provided with legs 1 made of rubber or the like. The main body is made of a synthetic resin body member 3 that can be attached to and detached from the opening edge of the material 2 and a synthetic resin lid member 4 that can be attached and detached to the opening edge of the body member 3. 5 are formed.

At an intermediate height position of the body member 3, an intermediate bottom 3a is integrally formed and provided.
A water receiving tray 7 for detachably mounting is provided integrally formed, and a steam generating port 11 for connecting an evaporating plate 9 for heating and evaporating water by a heater 8 for humidification is provided integrally. I have.

The water supply tank 6 is provided with a water supply port 14 having a normally closed valve 13 on a cap body 12 made of a synthetic resin screwed so as to be detachable from the mouth 6a of the tank body 61. To the tank mounting port 7 of the water tray 7
a from above, and mounted so as to be seated on the tank receiver 7b. In this mounted state, the projection 15 integrally formed and protruded at the center of the bottom of the water receiving tray 7 connects the normally closed valve 13 to the spring 33. The water in the water supply tank 6 flows out into the water receiving tray 7 by being pushed open.

The water that has flowed out of the water receiving tray 7 flows into the evaporating dish 9 through the communication path 16 shown in FIGS. For example, when a predetermined water level required in a normal use state is reached as shown by a virtual line in FIG.
The water surface reaches the height of the lower end of the water supply port 14 and the water supply port 14
Close up. As a result, the outside water cannot be introduced into the water supply tank 6 through the water supply port 14, and the outflow of the internal water stops.

The water level evaporates and is consumed on the side of the evaporating dish 9 to lower the water level. To compensate for this, water flows from the water receiving dish 7 side to the evaporating dish 9 side, and the water level of the water receiving dish 7 drops. Then, since the water supply port 14 is changed from the state closed by the water surface to the open state, the water in the water supply tank 6 flows out to the water receiving tray 7 until the water supply port 14 is closed by the rise of the water level again, and the water is supplied. . By repeating the water supply and the water supply stop, the water is heated and evaporated by the heater 8 while the evaporating dish 9 is always maintained at a constant water level, and the set amount of steam is constantly generated to achieve the set humidification. To be done.

As shown in FIG. 1, the evaporating dish 9 is applied to the lower surface of the steam generating port 11 via a seal packing 21 and is screwed from below by a plurality of screws 22. As shown in FIGS. 1 and 2, the water supplied to the water receiving tray 7 is connected around the mouth 9 a of the evaporating dish 9, in the specific example of the first embodiment, to the mouth 9 a, as shown in FIGS. It has a detour 16a that bypasses around the steam generation port 11 and then flows into the evaporating dish 9. The detour 16a of the first embodiment includes a passage 16 extending from the water receiving tray 7 to the evaporation tray 9 side.
b is an annular passage formed between the inner annular wall 11a and the outer annular wall 11b around the steam generating port 11 so as to branch from the steam generating port 11, and is substantially true of the connection position of the inner annular wall 11a with the communication path 16b. At the opposite position, there is provided a communication port 23 cut out so that the detour 16a communicates with the steam generation port 11.

As a result, each of the communication paths 16 between the water receiving tray 7 and the evaporating dish 9 is open upward, so that it is easy to clean and remove attached minerals and the like. The problem that the life is reached early is eliminated. At the same time, the bypass 16a only slightly expands around the opening 9a of the evaporating dish 9 or around the steam generating port 11, so that the components do not become particularly three-dimensional, and have a simple and low-cost structure. In this way, it is possible to prevent the hot water on the side of the evaporating tray 9 from being transferred to the side of the water receiving tray 7 due to the movement of water flowing steadily from the side of the water receiving tray 7 to the side of the evaporating tray 9 through the long communication path 16, Hot water is a water tray 7
Even if it is shifted to the water tray 7 side while replacing the cold water from the side, the connection path 16 is long and hard to reach the water tray 7 side, and even if it reaches the water channel 7, it is repeatedly mixed with the cold water from the water tray 7 side. This will lower the temperature. Therefore, the problem that hot water is transferred to the water receiving tray 7 can be solved.

As shown in FIG. 1, an annular cover plate 24 made of metal or synthetic resin is applied to the bypass 16a.
It is attached so that it can be attached and detached by a plurality of screws 25. The steam generated in the evaporating dish 9 is guided to the screw portion on the outer periphery of the cylindrical wall 24a at the center of the cover plate 24 so that the opening 4a of the cover member 4 is opened.
The steam pipe 26 diverged to the outside is screwed and mounted so as to be detachable. The steam pipe 26 is formed by connecting several members made of synthetic resin by screws or fittings.
Also, a mixing member 26b for mixing the introduced outside air and the diverging steam is provided, and the temperature of the diverging steam is reduced by the introduction and mixing of the outside air. They avoid hot thoughts.

As shown in FIGS. 1 and 3, the heater 8 is a band heater wound around the outer periphery of the evaporating dish 9 and fastened with screws 31, 31. However, there is a problem that the tightening of the heater 8 is gradually loosened due to the repetition of the thermal expansion and the thermal contraction of the evaporating dish 9, and the heater 8 is inadvertently dropped off when the limit is exceeded.

In order to solve this, in the first embodiment,
As shown in FIGS. 1 and 3, a heater drop prevention fitting 32 made of a wire is applied to the bottom of the evaporating dish 9 from below on the diameter line of the evaporating dish 9, and both ends 32 a and 32 a are provided on the outer periphery of the flange of the evaporating dish 9. By engaging and stabilizing the mounting holes 9c, 9c provided at two places on the diameter line of the folded annular wall 9b, even if the heater 8 tries to fall, it does not come off any more when it hits the heater fall prevention metal fitting 32. The heater 8 can be prevented from dropping carelessly.

By the way, the water supply tank 6 of the present embodiment
Is installed with the water supply port 14 provided on the cap body 12 attached to the mouth 6a of the tank body 61 downward as in the conventional case, and the normally closed valve 13 of the water supply port 14 is pushed and opened, Liquid is replenished by the consumption amount in such a manner that the content liquid flows out with the introduction of outside air until the outflow water closes the outer opening of the water supply port 14 as indicated by the phantom line in FIG. A valve seat 62 that is opened and closed by the normally closed valve 13 is provided in the inner opening, and a cover body 63 that surrounds the installation part of the valve seat 62 and the normally closed valve 13 from the inside is provided. A gas-liquid exchange section that rises from the lower end of the cap body 12 or a position close thereto and guides liquid injection and introduction of outside air to a gas-liquid exchange section that rises from the inner surface of the water supply port 14 that is open. Slit as 4 is formed in the circumferential direction a plurality of locations. A small hole 65 is provided in the ceiling wall 63b of the cover body 63 as a part for introducing outside air.

Thus, the peripheral wall portion 63 of the cover body 63
The slit 64 formed in the tank body 61 rises from the inner surface height or a position close to the inner surface where the valve seat 62 of the cap body 12 is open.
2 is connected in a very short path and at a large height range, so that the liquid in the tank body 61 is subjected to a throttling action corresponding to the number and width of the slits 64 at the same time when the normally closed valve 13 is opened. With the low flow rate, the upper part of the slit 64 is used as an inlet for introducing small air bubbles into the tank body 61 of the introduced outside air, and is smoothly replaced with the introduced outside air, while quietly in most of the lower part. In addition, since it flows out to the water supply port 14 without obstructing the rise of the introduced outside air, it is possible to effectively suppress the gurgling noise caused by the introduced outside air not only at the time of replenishment where the outflow flow rate is relatively small but also at the time of initial water supply where the outflow flow rate is increased. Can be.

In addition, the outside air introduced into the tank body 61 as small bubbles through the small holes 65 of the ceiling wall 63b in addition to the upper portion of the slit 64, is smoothly introduced into the tank main body 61. be able to. Slits can also be provided only for the introduction of outside air.

Further, since the upper edge 64a of the slit 64 is formed perpendicular to the ceiling wall of the cover body 63, the air that has reached the upper edge 64a of the slit 64 rises immediately above the cover 64, and In cooperation with the function of improving the bubble elimination by the edge forming an acute angle with the inner surface of the body 63, the air entering the tank body is further reduced so that the gas-liquid exchange can be achieved more quietly. be able to.

Further, since the cover body 63 is formed integrally with the cap body 12, the number of components in the structure for guiding the gas-liquid exchange does not increase, and the cover can be provided at a low cost.

A herb container 26e is provided at a vapor discharge end 26d at the upper end of the vapor pipe 26. When a harp is stored and used in the herb container 26e, the herb component is added to the vapor discharged to the outside through this portion. Is multiplied and emitted. The water receiving tray 7 is provided with a water level sensor 27 as shown in FIG. 2 and a temperature fuse 28 as shown in FIG. 3, so that the water level becomes dangerous due to no water supply from the water supply tank 6. In addition, it automatically detects that the temperature has risen abnormally due to running out of water, and when such detection is made, the heater 8 is automatically turned off, and at the same time, a sound and various display warnings are issued. I have. Thereby, safety of use can be achieved.

(Embodiment 2) In Embodiment 2, as shown in FIG. 4, only a slit 64 is provided in a cover body 63, and the small holes 65 of Embodiment 1 are omitted. However, a slit 64 is formed so as to penetrate to the ceiling wall portion 63b, and a penetrating portion to the ceiling wall portion 63b serves as a small hole 65. However, even if the slit 64 does not penetrate the ceiling wall 63b in this way, it is effective for silencing.

(Embodiment 3) Embodiment 3 is shown in FIGS. 5 and 6, and
The ceiling wall 63b of the cover body 63 of FIG.
, Which is attached to the upper end of the valve rod 13a of the normally closed valve 13 with a screw 66 so as to integrally move up and down when the normally closed valve 13 is opened and closed.

Thus, the same operation and effect as those of the second embodiment can be obtained, and in addition to the opening of the normally closed valve 13, the ceiling wall 63 b moves to the far side of the tank main body 61, and the cover 63. , The liquid in the tank body 61 and the introduced outside air work to draw into the enclosed space by the cover body 63, so that the tank body at the time of the initial liquid supply is operated. The outflow of the liquid in 61 and the introduction of the outside air accompanying the liquid can be promoted, and the supply of the liquid with the exchange of gas and liquid can be achieved more smoothly and quietly.

(Embodiment 4) In Embodiment 4, as shown in FIGS. 7 and 8, a notch is provided on the outer periphery of a ceiling wall 63b of Embodiment 3 to
The small holes 65 are formed between the holes 3a and 3a, and the exchange of gas and liquid is achieved more smoothly and quietly.

(Fifth Embodiment) In a fifth embodiment, as shown in FIGS. 9 to 11, the cover 63 as shown in the second embodiment is connected to the valve stem 13 of the normally closed valve 13.
a, and the same effect as the effect of the vertical movement of the ceiling wall 63b shown in the third and fourth embodiments is obtained by the vertical movement of the entire cover body 63 in addition to the effect of the second embodiment. Demonstrate.

In addition, the lower end of the cover body 63 and the inner surface of the water supply port 14 where the valve rod 13a is opened, when the normally closed valve 13 is opened from the closed state shown in FIG. 10 as shown in FIGS. The liquid in the tank body 61 is more easily flown into the water supply port 14 by the annularly continuous gap 67 between them, and flows into the water supply port 14 in a tubular membrane flow, and the outside air flows into the center of the flow. Since it is easy to secure the passage through which the gas is introduced, the supply of the liquid accompanied by the exchange of the gas and the liquid can be achieved more smoothly and quietly than the first and third aspects of the invention.

(Embodiment 6) As shown in FIG. 12 and FIG. 13, the present embodiment 6 has the cap body 12 in which the valve rod 13a is open, in addition to the gas-liquid replacement structure of the embodiment 5. Is provided with a peripheral wall portion 63a of the cover body 63 and a shutter wall 68 that fits with the peripheral wall portion 63a over the entire vertical movement range.

The shutter wall 68 closes the annularly continuous gap 67 of the fifth embodiment from the closed state of the normally closed valve 13 in FIG. 12 to the open state in FIG.
7, the degree of the negative pressure generated in the enclosed space when the cover body 63 moves upward is increased, and the ceiling wall portion 63b of the third and fourth embodiments is formed by the cover body 63 as a single member. The same operation and effect as described above can be exhibited. The shutter wall 68 may also be provided with a slit as a gas-liquid exchange unit or an outside air introduction unit.

(Embodiment 7) As shown in FIGS. 14 to 16, Embodiment 7 has a gas-liquid exchange structure similar to that of Embodiment 6, and additionally has an upper edge 64a of a slit 64. Is formed at an acute angle with the inner surface of the cover body 63, and a small hole 65 having the same shape as the slit 64 is formed in an inner peripheral wall 63c formed by a concave portion for attaching the cover body 63 to the valve rod 13a. It is formed. Thereby, even in the small hole 65, the upper edge 65a having the acute angle is formed.
The tank body 61
The gas-liquid exchange can be achieved more smoothly and quietly. Moreover, the upper edges 64a, 6a of the slit 64 and the small hole 65
5a, since the acute angle is larger than that of the first embodiment due to the round surface of the inner surface of the cover body 63 having the dome shape of the ceiling wall 63b, the bubbles are further reduced by that much, and the gas-liquid The sound due to the replacement can be further reduced.

In the humidifier according to the seventh embodiment, a vertical detour 16c is formed in the communication path 16 between the water receiving tray 7 and the evaporating tray 9 so as to be the same as a planar detour. In addition to the function and effect, the function of making the high-temperature water less likely to dive below the low-temperature water is added, so that it is easier to prevent the high-temperature water on the evaporating dish 9 from reaching the water receiving dish 7 than in the first embodiment. Further, a shaft 81 is provided at an opening to the upper part of the detour 16c.
A cover 82 that can be opened and closed around is provided, and even when the bypass 16c is deep, the cover 8 can be opened and widely opened, so that the structure is easy to clean. Further, the lid 82 is provided with a hanging wall 82a that enters the communication path 16 so as to prevent the high-temperature water on the evaporating tray 9 from moving to the water receiving tray 7 side.

(Eighth Embodiment) In the eighth embodiment, as shown in FIGS. 17 to 19, the inside of the water supply port 14 is divided into a liquid outflow passage 71 and an air introduction passage 72, and the outside of the air introduction passage 72. The opening 72a is formed at the inner opening 14 of the water supply port 14 more than the outer opening 71a of the liquid outflow passage.
a side. As a result, the effluent of the liquid in the tank main body 61 reaches the outer opening 72a of the air introduction passage 72 beyond the height of the outer opening of the water supply port 14, that is, the outer opening 71a of the liquid outflow passage 71. When the effluent is consumed, the outside opening 72a of the air introduction passage 72 opens first and the outside air enters the air introduction passage 72 in the water supply port 14 and tends to rise. At the same time, the liquid is exchanged without contacting the outside air introduced through the liquid outflow passage 71 of the water supply port 14, so that the replenishment accompanying the consumption of the liquid can be achieved extremely smoothly and extremely quietly. Moreover, when the inventions of Embodiments 1 to 7 are used in combination, the combined effects can be exhibited.

In each of the above embodiments, only the water supply tank of the humidifier has been described. However, the present invention is not limited to this, and may be applied to various types of water supply and liquid supply tanks. can do.

[0044]

According to the first, second, third, fourth and fifth aspects of the present invention, the cover body covers the normally closed valve of the water supply port from the side to the upper part, and guides outflow of liquid and introduction of outside air. As a result, the outflow of the liquid can be achieved quietly and smoothly.

According to the first aspect of the present invention, since the cover is formed by the peripheral wall integrally formed with the cap and the ceiling wall which shares the normally closed valve, the gas-liquid exchange is performed without any special member. Can be provided at a low cost without increasing the number of parts. In addition, the ceiling wall of the cover body moves up and down with the opening and closing of the normally closed valve, and at the same time the normally closed valve is opened, the ceiling wall moves to the far side of the tank body, thereby enclosing the enclosed space by the cover body. It expands to create a negative pressure state temporarily, and the liquid in the tank body and the introduced outside air work to draw into the enclosed space defined by the cover body. This facilitates the introduction of outside air, and the liquid supply with the exchange of gas and liquid can be achieved more smoothly and quietly.

According to the second aspect of the present invention, in particular, the same effect as the vertically movable ceiling wall using the normally closed valve of the second aspect of the invention can be obtained by the vertical movement of the cover body. In addition, an annularly continuous gap between the lower end of the cover body and the inner surface of the cap body where the valve seat opens when the normally closed valve is opened further facilitates the liquid in the tank body to flow into the water supply port. At the same time, this forms a cylindrical membrane flow, flows into the water supply port, and secures a passage through which the outside air is introduced at the center of the flow, so that it can easily reach the outside air introduction portion of the cover body.
The supply of the liquid accompanied by the exchange of gas and liquid can be achieved more smoothly and quietly than in the first aspect of the present invention.

[0047] According to the third aspect of the invention, in the invention of claim 2, further a slit inlet portion of the outside air is provided so as to extend upwardly from the lower end or a position close to that of the cover member, according to claim 2 in addition to the invention, further Sri
A small bubble is introduced into the tank body of the outside air
Works as an inlet, and the outflow rate of the liquid is relatively small
Not only during replenishment, but also during initial
Unnecessary noise caused by outside air can be effectively suppressed.
You.

According to the fourth aspect of the present invention, in addition to any one of the second and third aspects of the present invention, the shutter wall closes the annularly continuous gap of the fourth aspect of the present invention. Does not exhibit the function and effect, but increases the degree of negative pressure generated in the enclosed space when the cover body moves upward, so that the liquid inside the tank body and the liquid
Outside air is drawn into the enclosed space by the cover
Of the liquid inside the tank body during the initial liquid supply.
And the accompanying introduction of outside air can be promoted .

According to the fifth aspect of the invention, in particular, as for the liquid in the tank main body, the effluent exceeds the height of the outer opening of the water supply port, reaches the outer opening position of the air introduction passage, and the outside air is introduced. When the effluent is consumed, the outside opening of the air introduction passage opens first and the outside air tries to enter the outside air introduction passage in the water supply port and rises, and at the same time, the liquid flows out of the water supply port. Since gas and liquid are exchanged without coming into contact with the outside air introduced through the passage, replenishment accompanying consumption of the liquid can be achieved extremely smoothly and extremely quietly. In addition, when the invention of claim 5 and the invention of claims 1 to 4 are used in combination, it is possible to exhibit the function and effect of combining them.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a humidifier showing a first embodiment of the present invention.

FIG. 2 is a plan view of the humidifier of FIG.

FIG. 3 is a perspective view showing a state in which a heater is attached to an evaporating dish of the humidifier in FIG. 1;

FIG. 4 is a perspective view of a cover body according to the second embodiment of the present invention.

FIG. 5 is a perspective view of a cover body according to a third embodiment of the present invention.

6 is a sectional view of a cap body provided with the cover body of FIG.

FIG. 7 is a perspective view of a cover body according to a fourth embodiment of the present invention.

8 is a sectional view of a cap body provided with the cover body of FIG. 7;

FIG. 9 is an overall configuration diagram of a humidifier showing a fifth embodiment of the present invention.

FIG. 10 is a sectional view of a water supply port in a closed state of the humidifier in FIG. 9;

11 is a cross-sectional view of a water supply port of the humidifier shown in FIG. 9 in an open state.

FIG. 12 is a cross-sectional view of a water supply port in a closed state according to a sixth embodiment of the present invention.

13 is a cross-sectional view showing an open state of the water supply port of FIG.

FIG. 14 is an overall configuration diagram of a humidifier showing a seventh embodiment of the present invention.

FIG. 15 is a sectional view of a water supply port of the humidifier shown in FIG. 14 in a closed state.

FIG. 16 is a sectional view of a water supply port of the humidifier shown in FIG. 14 in an open state.

FIG. 17 is a sectional view of a water supply port according to the eighth embodiment of the present invention.

FIG. 18 is a bottom view of the water supply port of FIG.

19 is a perspective view of the water supply port of FIG. 17 as viewed from below.

FIG. 20 is a sectional view showing a conventional water supply port.

[Explanation of symbols]

 Reference Signs List 6 water supply tank 61 tank body 12 cap body 13 normally closed valve 13a valve rod 14 water supply port 62 valve seat 63 cover body 63a peripheral wall 63b ceiling wall 64 slit 64a upper rim 65 small hole 65a upper rim 66 screw 67 annular Clearance 68 Shutter wall 71 Liquid outflow passage 71a Outside opening 72 Air introduction passage 72a Outside opening

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24F 6/00 F23K 5/00

Claims (5)

(57) [Claims] 1. A tank body is installed with a water supply port provided on a cap body provided at the mouth of the tank body facing down, and when a normally closed valve of the water supply port is pushed open, the liquid is discharged so that the liquid content flows out. In the liquid supply tank for replenishing the outflow amount, a cover body is provided to cover from the side to the top of the normally closed valve, a peripheral wall portion of the cover body is integrally formed with the cap body, and a ceiling wall portion of the cover body is normally closed. And a gas-liquid exchange unit for exchanging gas and liquid by flowing liquid and introducing outside air is provided on the peripheral wall or the peripheral wall and the ceiling wall when the liquid is supplied to the liquid supply tank. Gas-liquid replacement structure. 2. A tank body is installed with a water supply port provided on a cap body provided at the mouth of the tank body facing downward, and when a normally closed valve of the water supply port is pushed open, the liquid is discharged so that the liquid content flows out. In the supply tank for replenishing the outflow amount, the normally closed valve is provided with a cover body that covers the normally closed valve from the side to the upper part, and the cover body is moved up and down with the opening and closing of the normally closed valve. A liquid outflow portion is formed between the inner surface of the cap body and the inner surface of the cap body, and an outside air introduction portion is provided in the cover body. Replacement structure. 3. A gas-liquid replacement structure at the time of liquid supply of a liquid supply tank according to claim 2 , wherein the outside air introduction portion is a slit provided so as to extend upward from a lower end of the peripheral wall of the cover body or a position close thereto. . 4. A liquid supply in a liquid supply tank according to claim 2 , wherein a shutter wall is provided on the inner surface of the cap body so as to fit with the peripheral wall of the cover body in the entire vertical movement range. Gas-liquid exchange structure at the time. 5. A tank body is provided with a water supply port provided on a cap body provided at the mouth of the tank body facing downward, and a normally-closed valve of the water supply port is pushed and opened to discharge the liquid so that the liquid content flows out. in the liquid supply tank for replenishment by outflow minutes, a passage leading from the outside to the water inlet of the normally closed valve is provided, the inner
The side opening is divided into a liquid outflow passage and an air introduction passage, and the opening position outside the air introduction passage is positioned closer to the normally closed valve than the opening position outside the liquid outlet. A gas-liquid exchange structure at the time of liquid supply of a liquid supply tank.