JPS592406Y2 - water heating type humidifier - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a water heating type humidifier that performs humidification by discharging steam generated by heating.

BACKGROUND ART Conventionally, as this type of humidifier, those shown in FIGS. 1 to 3 are known.

That is, in FIGS. 1 to 3, 1 is a base, 2 and 3 are a heating water tank and a water receiving chamber respectively arranged in the base 1, and the heating water tank 2 is a system installed upright in the base 1. It communicates with the inner cylinder 4.

Reference numeral 5 denotes a water supply tank mounted on the upper wall 1a so as to straddle the water receiving chamber 3. A predetermined gap is provided between this and the inner surface of the base 1, and the outside air flows through this gap A and the water supply tank. 5 and the water surface of the water receiving chamber 3 (ventilation path B), and an outside air introduction path 7 (indicated by an arrow for convenience) that flows into the guide tube 4 through the intake hole 6 at the lower end of the guide tube 4 in order. is forming.

Reference numeral 8 denotes a water supply cap, whereby the water in the water supply tank 5 is supplied into the water receiving chamber 5 until the lower end opening of the water supply cap 8 is closed, and the water level in the heating water tank 2 is always maintained constant via the hose 9. It has become so.

10 is a heater, and 11 is a steam discharge hole.

When the heater 10 is energized, the water in the heating water tank 2 is heated to generate steam, which is discharged from the steam discharge hole 11 and outside air flows into the guide tube 4 through the outside air introduction path 7 due to the chimney effect. Although the steam temperature can be lowered to a safe temperature, this type of humidifier has the following risks.

In other words, in the worst case scenario, for example, if the humidifier is placed next to a window in a heated room and operated to humidify immediately after refilling the winter water tank 5 with cold water to the extent that air remains inside, the water tank 5 In addition to being exposed to direct sunlight, they are also exposed to high room temperature, causing the temperature to rise (according to experiments, it rose by about 26 degrees Celsius).

Then, the air in the water supply tank 5 is expanded, and the pressure of the expanded air acts on the water in the water supply tank 5, so that the water in the water supply tank 5 is transferred to the water receiving chamber 3.
Although the water supply hole 8a is blocked by the ice surface of
The water begins to abnormally flow out into the water receiving chamber 3 through the water receiving chamber 3.

Then, the water level in the water receiving chamber 3 rises and reaches the lower surface of the water supply tank 5, and the ventilation path B is closed, and the outside air introduction path 7 is eventually closed.

According to experiments, when the water tank 5 contains ÷ water, the amount of water flowing out of the water tank 5 due to air expansion is maximum.For example, when the volume of the water tank is 3.41, the maximum amount of water flowing out is 560 m It is l.

If the outside air introduction path 7 is blocked by abnormal water as in 2.
Outside air no longer flows into the guide tube 4, and the guide tube 4. The chimney effect is nullified and the steam stagnates inside the indoor cylinder 4, and a part of it flows out of the guide cylinder 4 through the intake hole 6 and comes into contact with the water supply tank 5.

As a result, the air in the water supply tank 5 is further expanded, and the water in the water supply tank 5 is forced to flow out into the water receiving chamber 3, so the water level of the hot water in the heating water tank 2 rises and the hot water is poured into the intake hole. 6, the water flows back to the water receiving chamber 3 side.

By blocking the outside air introduction path 7 in this way, the water receiving chamber 3 receives not only the abnormal amount of water flowing out due to direct sunlight, etc., but also the amount of water flowing out due to the contact with the steam mentioned above, and the water receiving chamber 3 receives the amount of water flowing out from the heating water tank 2. There was a danger that the inflowing hot water could no longer be accommodated and the hot water would eventually climb over the top of the base 1 and spill out to the outside, causing burns.

The present invention was developed in view of the above circumstances, and its purpose is to prevent abnormal outflow of water in the water tank due to air expansion, especially when exposed to direct sunlight or exposed to high room temperature. However, by providing an auxiliary water receiving chamber that can store this abnormal water and prevent the outside air introduction channel from being closed by water,
To provide a water heating type humidifier which prevents hot water from leaking out to the outside and thereby avoids the risk of burns.

An embodiment of the present invention will be described below with reference to FIGS. 4 to 7.

Reference numeral 12 denotes a base, and 13 denotes a guide cylinder that is integrally erected from one side of the base to the upper half of the base 12 and has a discharge hole 14 on the upper surface, and a steam chamber 15 is formed inside the guide cylinder.

16 is an upper wall portion formed on the remaining upper half of the base 12;
Reference numeral 7 denotes a surrounding wall portion that is integrally provided on the outer peripheral surface of the upper wall portion 16, and an intake hole 18 is formed at the lower end of the guide tube 13 that is continuous with the surrounding wall portion 17.

19 is an oblong container-shaped raw water receiving chamber, which is connected to the upper wall 16.
It is formed by making it into a depressed shape in the center of.

Now, reference numeral 20 denotes a pair of mounting tables that are integrally provided on the upper wall part 16 along the inner circumferential surface of the surrounding wall part 17 on both the front and rear sides,
A water tank, which will be described later, is mounted on this.

Reference numeral 21 denotes a heating water tank disposed within the base 12 so as to communicate with the guide tube 13, and this heating water tank 21 and the main water receiving chamber 19
are communicated with each other by a communication pipe 22 at the bottom wall of each.

Reference numeral 23 denotes a water tank located within the surrounding wall 17 and placed on the mounting table 20. In this state, there are predetermined gaps between the surrounding wall 17 on the side opposite to the intake hole 18 and the side surface of the water tank 23. Gaps C and D are formed, and a space of a predetermined volume is formed between the lower surface of the water tank 23 and the upper wall portion 16, that is, the auxiliary water receiving chamber 2.
4 is formed.

This forms an outside air introduction path 25 (indicated by an arrow for convenience) through which outside air is introduced into the steam chamber 15 through the gap C9, the auxiliary water receiving chamber 245, and the intake hole 18 in this order.

Reference numeral 26 denotes a water supply port protruding from the lower surface of the water tank 23, onto which a water supply cap 27 is screwed so as to face the raw water receiving chamber 19.

In this water supply cap 27, 28 is a water supply hole bored in the center thereof, and 29 is a water supply hole (L2) through a support frame 30.
The valve stem is inserted through L28, and the upper end of the valve stem has a water supply (L28
A valve element 32 for configuring a water supply valve 31 that opens and closes is attached, and its lower end abuts against a locking rod 33 protruding from the inner bottom surface of the raw water receiving chamber 19. In this state, the valve rod 29 The valve body 32 opens the water supply hole 28 against the elastic force of the spring 34 provided around the lower half of the tank, and the water in the water tank 23 is supplied to the raw water receiving chamber 19 through the water supply hole 28. When the water level rises and the lower end opening 27a of the water supply cap 27 is blocked by the ice surface, the water supply from the water supply tank 23 is stopped, thereby maintaining the water level in the heating water tank 21 at a constant level. It is now possible to do so.

By the way, when setting the volume of the auxiliary water receiving chamber 24, that is, setting the height of the mounting table 20, when the water tank 23 contains water equal to its volume, the temperature should rise by about 26°C. At this time, the amount of water flowing out from the water supply tank 23 is determined experimentally and by design, and a volume slightly larger than the amount of water flowing out is set equal to the volume of the auxiliary water receiving chamber 24.

The circumstances surrounding this setting are based on the following considerations.

Since the expanded air volume increases depending on the increase in the air volume in the water supply tank 23, and the amount of outflow water increases,
For example, at the beginning of operation, if the amount of water in the water supply tank 23 is large and therefore the air volume is small, the amount of expanded air is small and the amount of water flowing out is also small.

On the contrary, if the air volume is extremely large relative to the water volume in the water supply tank 23, the amount of expanded air will be large, but since the amount of stored water is originally small, the amount of outflow water will also be small.

On the other hand, as for the circumstances during operation, the amount of water in the water supply tank 23 decreases as the operation time passes, and as the air volume gradually increases, the expanded air volume also increases, and the amount of outflow water gradually increases. When the amount of water in the tank 23 becomes sufficiently small compared to the volume of the water tank 23, the water tank 23 becomes lighter, so that the elastic force of the spring 34 of the water cap 27 absorbs water before the specified amount of water corresponding to the expanded air flows out. This overcomes the weight of the water tank 23, which makes the water tank 23
is lifted up via the valve stem 30, and the water supply hole 28 is closed by the valve body 32, preventing any further water from flowing out from the water supply tank 23.

After taking into account the circumstances before and after the water supply hole 28 is closed by the valve body 32, it has been found that the maximum amount of water flows out when the water supply tank 23 contains water approximately equal to this volume.

Note that 35 is a heater attached to the outer bottom wall of the heating water tank 21.

Now, in the above configuration, when the heater 35 is energized by a switch (not shown), the heating water tank 21 is heated and a large amount of steam is generated.

The steam generated in this way is mixed with the air taken in by the chimney effect from the intake hole 18, reaches an appropriate temperature, rises in the steam chamber 15, and is discharged to the outside from the discharge hole 14, thereby performing humidification.

Now, when the temperature rises by about 26 degrees Celsius under direct sunlight etc. while driving, and when water is in the water tank 23 by its volume, the maximum amount of water will be removed from the water tank 23 due to air expansion. However, according to this embodiment, the volume of the auxiliary water receiving chamber 24 is set to be slightly larger than the maximum amount of water flowing out, so that the amount of water flowing out exceeding the specified water level of the raw water receiving chamber 29, that is, abnormal water. are all accommodated in the auxiliary water receiving chamber 24, and the water level of the auxiliary water receiving chamber 24 does not reach the lower surface of the water supply tank 23. Therefore, the outside air introduction passage 25 is not blocked by water, and the chimney of the guide tube 13 The effect is well maintained,
The discharge of steam from the discharge hole 14 continues satisfactorily.

Therefore, the steam stagnates in the guide tube 13 and a part of the steam is prevented from coming into contact with the water supply tank 23 through the intake hole 18, so it is possible to avoid the possibility of hot water leaking outside and causing burns. .

In particular, in this embodiment, the bottom surface of the auxiliary water receiving chamber 24 is
Since the bottom surface of the auxiliary water receiving chamber 24 is made as wide as possible so as to be used also as a water receiving chamber 6, the rising rate of the water level can be suppressed to a low level, and an outside air introduction path 25 with sufficient space can be secured.

As explained above, even if water in the water supply tank abnormally flows out due to air expansion, particularly under conditions of exposure to direct sunlight or high room temperature, the present invention can store the amount of water that flows out. By providing an auxiliary water receiving chamber that prevents the outside air introduction path from being closed by water, it is possible to provide a water heating type humidifier that prevents hot water from leaking outside and thereby avoids the risk of burns. It is something.

[Brief explanation of the drawing]

Figures 1 to 3 show a conventional example of a water heating type humidifier, in which Figure 1 is a perspective view of the main parts, Figure 2 is a vertical cross-sectional view of the whole, and Figure 3 is an enlarged vertical cross-section of the vicinity of the water supply valve. 4 to 7 show an embodiment of the present invention, in which FIG. 4 is a view equivalent to FIG. 1, FIG. 5 is a view equivalent to FIG. 2, and FIG. 6 is a view equivalent to FIG. 5. vI-
FIG. 7, which is a vertical cross-sectional view of the main part along line vI, is a view corresponding to FIG. 3. In the figure, 15 is a steam room, 19 is a main water receiving chamber, 21 is a heating water tank, 23 is a water supply tank, 24 is an auxiliary water receiving chamber, 25 is an outside air introduction path, and 31 is a water supply valve.

Claims (1)

[Scope of utility model registration request] A heating water tank located at the bottom of the steam room, a raw water receiving chamber communicating with the heating water tank, and a water supply valve located above the main water receiving chamber to constantly maintain a specified water level in the main water receiving chamber. a water supply tank that supplies water so as to maintain the water supply; an outside air introduction passage that introduces outside air into the steam chamber through between the water surface of the main water receiving chamber and the water supply tank; An auxiliary water receiving chamber capable of storing abnormal water that causes a specified water level in the raw water receiving chamber due to air expansion in the water supply tank and preventing the abnormal water from closing the outside air introduction path. A water heating type humidifier.