JP2000130804A - Humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a practical humidifier wherein an effective sterilization function can be imparted to water tanks with a variety of capacities. SOLUTION: A humidifier is provided with a laterally-elongated water tank 1 and a group of ultraviolet generators 12, 12 with waterproofness provided underwater in the water tank 1. The ultraviolet generators 12, 12 are supported on a face 13 extending in a lengthwise direction of the water tank 1 by arranging them in the lengthwise direction, so as to permit the sterilization effect generated by ultraviolet rays to prevail in the entirety of water 1a in the water tank 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a humidifier.

[0002]

2. Description of the Related Art In recent years, for example, a humidifier such as an ultrasonic type has been used.
Examples of use as a means for maintaining food quality are increasing. For example, in salad bars of restaurants, etc., spray mist of humidifier on raw vegetables, etc., in sushi case, raw meat showcase, raw confectionery showcase, etc.
BACKGROUND ART The freshness of food is maintained by supplying mist of a humidifier to protect the food from drying.

[0003] When the humidifier is used for such an application, the water in the water tank of the humidifier is always kept particularly clean as compared with a normal use method for preventing drying of the indoor air. It is important to consider this.

In view of the above, it is desirable to dispose a waterproof ultraviolet ray generator in the water tank, and to keep the water in the water tank clean by a sterilizing action of ultraviolet rays emitted from the ultraviolet ray generator. Conceivable.

[0005]

However, it is actually difficult to provide an effective sterilizing function for humidifiers of various sizes having different capacities of the water storage tanks.
It is also necessary to ensure that the waterproofness of the ultraviolet ray generator is easily and reliably achieved.

The present invention has been made in view of such circumstances, and a first object of the present invention is to provide a practical humidifier capable of imparting an effective sterilizing function to various water tanks having different capacities. That is.

[0007] A second object of the present invention is to provide a humidifier in which an ultraviolet ray generator in a water tank is easily and reliably provided with waterproofness.

[0008]

In order to solve the above-mentioned problems, a humidifier according to the present invention according to claim 1 is provided with a horizontally long water storage tank and a waterproof property provided below the water surface of the water storage tank. A group of ultraviolet ray generators, and the group of ultraviolet ray generators of the water tank so that the sterilizing effect of the ultraviolet light generated by the group of ultraviolet ray generators is distributed over the entire water in the water tank. They are arranged side by side in the length direction.

According to the first aspect of the present invention, the interval between the adjacent ultraviolet ray generators is determined in consideration of the effective sterilization distance of each of the ultraviolet ray generators. In addition, the number of the ultraviolet ray generators is determined according to the length of the water storage tank. As a result, it is possible to spread the sterilizing effect of the ultraviolet rays generated by the group of ultraviolet ray generators to the entire water in the water storage tank, whereby the entire water in the water storage tank is always kept clean. Is done.

According to the present invention, by increasing the length of the water storage tank, the capacity of the water storage tank can be increased. Then, by determining the number of ultraviolet ray generators constituting the group of ultraviolet ray generators according to the length of the water tank, it is possible to provide an effective sterilization function to various water tanks having different capacities. it can.

The humidifier according to the present invention according to claim 2 is
2. The apparatus according to claim 1, wherein the group of ultraviolet light generators is supported on a surface extending in a length direction of the water storage tank. Here, the surface extending in the length direction of the water tank refers to a side surface extending in the length direction of the water tank or a bottom surface of the water tank.

The humidifier according to the present invention according to claim 3 is:
3. The device according to claim 1, wherein each of the ultraviolet ray generators has an elongated shape, and each of the ultraviolet ray generators is arranged horizontally so as to be orthogonal to the length direction of the water storage tank. 4. . With this configuration, the sterilizing effect of each of the ultraviolet ray generators is sufficiently distributed also in the depth direction of the water storage tank, which is more preferable.

The humidifier according to the present invention according to claim 4 is
4. The ultrasonic transducer according to claim 1, further comprising a plurality of ultrasonic transducers arranged inside the water storage tank in a longitudinal direction thereof, wherein each of the ultraviolet light generators is adjacent to each other. 5. They are arranged between each other. According to this configuration, the atomizing movement of the water performed by the ultrasonic vibrator is not hindered by the ultraviolet ray generator, so that the humidifying ability of the humidifier is not hindered, which is preferable. is there.

[0014] The humidifier according to the present invention described in claim 5 is:
5. The drainage device according to claim 1, wherein the drainage device discharges the water in the water storage tank, and a drainage control unit that controls the drainage device so that the water in the water storage tank is periodically drained. And with. By doing so, the water in the water storage tank is periodically drained and replaced, so that it is even more clean and suitable.

The humidifier according to the present invention described in claim 6 is:
The method according to any one of claims 1 to 5, wherein the imparting waterproofness to each of the ultraviolet ray generators is achieved by the following means. That is, a container that accommodates each of the ultraviolet ray generators and has a transparency of ultraviolet rays, and includes a container in which a portion other than a mouth for inserting each of the ultraviolet ray generators is closed, and the water storage tank includes the containers. A container receiving portion that receives liquid-tight below the water surface is provided, and each of the containers is arranged such that each of the ultraviolet ray generators is located inside the water tank and each of the ultraviolet ray insertion ports is located outside the water tank. It is supported by each of the container receiving sections.

In this case, the ultraviolet ray generator is
Water resistance can be easily and reliably provided.

[0017] The humidifier according to the present invention described in claim 7 is:
It has a container which accommodates an ultraviolet ray generator and has a permeability of ultraviolet rays, and a portion other than a mouth for inserting the ultraviolet ray generator is closed, and a container receiving portion which receives the container liquid-tight below the water surface. A water storage tank, wherein the container is supported by the container receiving portion such that the ultraviolet ray generator is located inside the water tank and the ultraviolet ray generator insertion port is located outside the water tank. It is a thing. This makes it possible to easily and reliably impart waterproofness to the ultraviolet ray generator.

The humidifier according to the present invention described in claim 8 is
The container according to claim 6 or 7, wherein the container receiving portion is configured to detachably hold each of the containers with respect to the water storage tank. With this configuration, for example, the container can be removed from the water storage tank as needed at the time of maintenance or the like, so that maintenance and inspection can be performed easily and quickly, which is preferable.

[0019] The humidifier according to the present invention described in claim 9 is:
9. The container according to claim 6, 7 or 8, wherein the container receiving portion includes a container mounting hole formed in the water storage tank, and a seal member interposed between the container mounting hole and the container. It is a thing.

A humidifier according to a tenth aspect of the present invention is the humidifier according to the ninth aspect, wherein the seal member has an attachment portion to the water storage tank and a container holder extending in a length direction of the container. And a part. The seal member is attached to the water tank at the attachment portion,
The container is supported by the container support. Since the container supporting portion extends in the longitudinal direction of the container, the container supporting portion can stably support the container, which is preferable.

[0021] In a humidifier according to the present invention described in claim 11, in the humidifier according to claim 9 or 10, the seal member is in close contact with the inner peripheral surface thereof and the outer peripheral surface of the container due to its elasticity. It has an annular projection. In this case, the liquid tightness between the container and the seal member is further improved, which is preferable.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing the internal configuration of a humidifier according to one embodiment of the present invention, and FIG. 2 is a front view of the humidifier of FIG.

The humidifier shown in FIGS. 1 and 2 is an ultrasonic humidifier, and has a water storage tank 1 for storing water 1a for atomization. The water storage tank 1 is made of, for example, a stainless steel plate, and is formed in a horizontally long box shape as shown in FIG.

The water storage tank 1 is provided with a drainage device for periodically discharging the water 1a therein. In the illustrated example, a drain 2 is connected to the bottom of the water storage tank, and the drain 2 is provided with a drain valve 3 that automatically opens and closes the drain. As the drain valve 3, for example, it is desirable to use a solenoid valve or a motor-operated valve which is closed when energized.
The operation of the drain valve 3 is automatically controlled by control means 4 such as a microcomputer, for example.

As clearly shown in FIG. 1, the vicinity of the connection of the drain pipe 2 in the water storage tank 1, that is,
The vicinity of the drain port 5 is formed one step lower than other parts. This is because the impurities in the water 1a are precipitated in the lower portion, so that the impurities can be efficiently discharged at the time of drainage. In addition, in order to obtain the same effect, the bottom surface in the water storage tank 1 may be inclined toward the drain port 5.

As another example of the drainage device, as shown by a two-dot chain line in FIG. 2, a water absorption pipe 2a is introduced into the water storage tank 1, and a water absorption device 3a such as a pump is inserted into the water absorption pipe 2a. The water absorption device 3a may be connected and automatically operated by the control means 4 to forcibly suck and discharge the water 1a in the water storage tank 1. If you do this,
Even when the installation position of the water tank 1 is low, the water tank 1
This is preferable because the water 1a in the inside can be discharged.

At the bottom of the water storage tank 1, a plurality of ultrasonic vibrators 6 for atomizing the water 1a are provided. As shown in FIG. 2, the ultrasonic vibrators 6 are arranged in the longitudinal direction of the water storage tank 1 at appropriate equal intervals.

A blower 7 and a blow-out tube 8 are connected to the water storage tank 1, and the air supplied from the blower 7 into the water storage tank 1 is atomized by the ultrasonic vibrator 6. The discharged water is conveyed to the outside from the outlet 8a of the outlet tube 8.

A water supply passage 9 for supplying the water 1a into the water storage tank 1 is connected to the water storage tank 1. The water supply passage 9 automatically opens and closes the water supply passage 9. Valve 1
0 is provided. As the water supply valve 10, for example,
Use a solenoid valve or motorized valve.

The water supply valve 10 receives a signal from a float switch 11 (see FIG. 2) provided as a water level detecting means provided in the water storage tank 1 and automatically controls the water supply passage 10 to open and close. The float switch 11 generates the signal when the water 1a in the water storage tank 1 reaches a predetermined upper limit level L1 and when the water 1a reaches a predetermined lower limit level L2. When the water 1a in the water storage tank 1 reaches the upper limit level L1, the water supply valve 10 is closed to stop water supply, and when the water 1a in the water storage tank 1 reaches the lower limit level L2, The water supply valve 10 is opened, and water supply is started again. The water supply valve 10 and the float switch 11 are controlled by, for example, the control unit 4.

The average water level in the water storage tank 1 depends on the optimum atomization efficiency of water by the ultrasonic vibrator 6.
It is desirable that the height is set to about 40 mm from the ultrasonic transducer.

On the surface extending in the length direction of the water storage tank 1,
A group of ultraviolet light generators 12 and 12 are supported in a waterproofed state. Here, as shown in FIG.
As each ultraviolet ray generator, an ultraviolet ray lamp 12 having a length corresponding to the depth of the water storage tank 1 is adopted, and a group of ultraviolet ray lamps is formed by the same two ultraviolet ray lamps 12 and 12. As shown in FIG. 1, each of the elongated ultraviolet lamps 12 is horizontally arranged so as to be orthogonal to the length direction of the water storage tank 1 (a direction perpendicular to the paper surface of FIG. 1), and
As shown in FIG. 2, the two ultraviolet lamps 12 and 12 are mounted on a front wall 13 extending in the longitudinal direction of the water storage tank 1 at the same height as those arranged in the longitudinal direction.

The distance between the adjacent ultraviolet lamps 12 is appropriately determined in consideration of the effective sterilization distance of each of the ultraviolet lamps 12 so that the ultraviolet rays can reach the whole of the water 1a in the water storage tank 1. decide. For example, in the example of FIG. 2, when the effective sterilization distance of each of the ultraviolet lamps 12 is D, the distance between the two ultraviolet lamps 12 is
At most, 2D intervals can be provided. The distance between each of the ultraviolet lamps 12 and the end surface 14 of the water tank 1 is D at the maximum. As the length of the water storage tank 1 increases, the number of the ultraviolet lamps 12 is increased accordingly, so that the ultraviolet light always reaches the entire water of the water storage tank 1.

As shown in FIG.
2 is desirably disposed between the adjacent ultrasonic transducers 6 and 6. By doing so, the ultrasonic vibrator 6
This is because the atomizing action of water exerted by the ultraviolet lamps 12 is not hindered by the presence of the ultraviolet lamps 12.

Each of the ultraviolet lamps 12 which does not have waterproofness is provided with waterproofness by the same method, and is attached to the water storage tank 1 by the same method. That is, as shown in FIG.
It is housed in a test tube elongated container 15 adapted to its shape. Each container 15 is provided with each of the ultraviolet lamps 1.
2 is provided with an ultraviolet lamp insertion slot 16 for inserting the same, and the portion other than the ultraviolet lamp insertion slot 16 is completely closed. Each of the ultraviolet lamps 12 is inserted into each of the containers 15 from the ultraviolet lamp insertion opening 16, and wiring cords 12 a and 12 b thereof extend from the ultraviolet lamp insertion opening 16 of each of the containers 15 to the outside. If necessary, the ultraviolet lamp insertion port 16 of each container 15
In addition, an appropriate plug member 17 may be attached, or the plug member 17 may be provided with a function of holding the posture of each of the ultraviolet lamps 12 in each of the containers 15.

Each of the containers 15 is made of a material having a good transmittance of ultraviolet rays. Here, pure quartz is used as a material. Ultraviolet light generated from each of the ultraviolet lamps 12 passes through each of the containers 15 and is supplied into the water 1 a of the water storage tank 1. And the germicidal action of the ultraviolet rays prevents the germs from propagating in the water 1a of the water storage tank 1.

Each of the containers 15 is supported by a container receiving portion 18 provided in the water storage tank 1. As shown in FIG. 1, each of the container receiving portions 18 has a circular container mounting hole 19 formed through the front wall 13 of the water storage tank 1 and a container mounting hole image defining the container mounting hole 19. A sealing member 21 interposed between the forming part 20 and the container 15, wherein the containers 15 are always immersed in the water 1 a in the water storage tank 1. Each container 15 is supported horizontally. Each container 15 always holds the water tank 1
, The surroundings are not adversely affected by ultraviolet rays emitted from the ultraviolet lamps 12.

As shown in FIG. 3, which is an enlarged sectional view of the sealing member 21, the entire sealing member 21 is formed by using a rubber-like elastic body, and has a cylindrical shape extending in the longitudinal direction of the container 15. And a mounting part 23 to the water storage tank 1 integrally formed with the container holding part 22. As the material of each of the seal members 21, it is desirable to employ a rubber such as a silicon-based rubber which does not change in material even when receiving ultraviolet rays.

The inner diameter of each container holder 22 is large enough to receive each container 15 in a liquid-tight manner when each container 15 is pushed in. On the inner peripheral surface of each of the container holding portions 22, an annular convex portion 24 is formed integrally with the outer peripheral surface of each of the containers 15 due to its elasticity.
The annular projection 24 further improves the liquid tightness between each of the containers 15 and each of the sealing members 21 and reliably prevents water leakage from occurring between them. Therefore, the number of the annular convex portions 24 may be one, but preferably two or three or more may be provided as shown in the illustrated example.

Each of the mounting portions 23 is provided with a corresponding one of the container holding portions 2.
2 flange portions 2 formed at positions closer to the inner end portion 2
5 and 26, and the two flange portions 25 and 26 are provided.
An annular groove 27 is formed between them. The outer flange portion 25 of the two flange portions 25 and 26 which is located outside the water storage tank 1 has a large area so as to be in close contact with the outer surface of the front wall 13 of the water storage tank 1. It is formed larger than the portion 26.

In mounting each of the containers 15 accommodating each of the ultraviolet lamps 12 to the water storage tank 1, first, a radially inward force is applied to each of the sealing members 21 to deform the sealing members 21. The outer flange portion 25 is inserted into each of the container mounting holes 19 of the water storage tank 1 until the outer flange portion 25 contacts the outer surface of the front wall 13 of the water storage tank 1.
In the mounted state, the container mounting hole defining portions 20 are fitted exactly into the annular grooves 27 of the seal members 21, and the two flange portions 25 and 26 are connected to the water storage tank 1 by the two flange portions 25 and 26. It is in close contact with the front wall 13 from inside and outside.
For this reason, the water 1 a in the water storage tank 1 is provided between the container mounting hole defining portions 20 and the seal members 21.
Does not leak.

Thereafter, the containers 15 are pushed into the container holding portions 22 of the seal members 21 from outside.
As shown in FIG. 1, each of the containers 15 is inserted into each of the seal members 21 until the ultraviolet lamp 12 accommodated therein is substantially accommodated in the water storage tank 1. The mouth 16 is located outside the water storage tank 1. Since the annular convex portion 24 is formed on the inner peripheral surface of each of the container holding portions 22,
No water leakage occurs between the space 2 and each of the containers 15. Since each of the containers 15 has a longer portion on the inner side than the portion on the outside of the water storage tank 1, the weight is biased toward the inner end thereof. A portion 22 extends in the length direction of each container 15 to securely hold each container 15, and the mounting portion 23 connects the container mounting hole defining portion 20 with the two inner and outer flange portions 25 and 26. Since the container 15 is firmly held, the container 15 is stably held in a horizontal state.

For example, when transporting the humidifier,
Even if any large impact is applied to each container 15 or each container 15 receives vibration for a long time, each seal member 21 formed of a rubber-like elastic material acts as a cushioning material. There is no problem such as the container 15 and the ultraviolet lamps 12 therein being damaged or displaced.

Since the containers 15 are detachable from the seal members 21, the containers 15 can be removed from the water storage tank 1 as needed, for example, during maintenance. it can. Therefore, maintenance and inspection of each of the ultraviolet lamps 12 and the inside of the water storage tank 1 can be easily and quickly performed, which is preferable.

Next, the operation of the humidifier will be described.

When the user turns on the power (not shown) of the humidifier in a stopped state, the drain valve 3 which has been opened up closes, and the water supply valve 10 which has been closed opens up, The water 1a starts to accumulate in the water storage tank 1, and at the same time, each of the ultraviolet lamps 12 is turned on. Eventually, when each of the ultraviolet lamps 12 submerges with each of the containers 15 and the water level in the water storage tank 1 reaches the upper limit level L1, by a signal from the float switch 11,
The water supply valve 10 is closed. Thereafter, when a humidification signal is input, the ultrasonic vibrator 6 and the blower 7 start operating, and the humidifier enters a humidification operation state.

When the water level in the water storage tank 1 drops to the lower limit level L2 by the humidification operation, the water supply valve 10 is opened by the signal from the float switch 11, and the supply of water starts. When the water level in the water storage tank 1 returns to the upper limit level L1, the water supply valve 10 is closed by a signal from the float switch 11, and the water supply is stopped.

For example, by the humidifying operation, the external humidity becomes
When a preset numerical value is reached, a sensor (not shown) detects this and the humidification signal is cut off, the ultrasonic vibrator 6 and the blower 7 stop operating, and the humidifier is in a humidification stopped state. Becomes When the external humidity decreases, a humidification signal is input again, and the humidification operation is started. Even in the humidification stop state, the group of ultraviolet lamps 12 and 12 continues to be turned on, and the sterilizing action is continued.

When the user turns off the power of the humidifier, the ultraviolet lamps 12 are turned off, the ultrasonic vibrator 6 and the blower 7 stop operating, and at the same time, the drain valve 3 is turned off. Automatically opens and drainage begins.

As described above, the water 1 is stored in the water storage tank 1.
a is accumulated, the group of ultraviolet lamps 12,
Since 12 is always lit, its germicidal action prevents germs from growing in the water tank 1. The group of ultraviolet lamps 12, 12 is always below the water surface in the water storage tank 1 together with the containers 15, and
The group of ultraviolet lamps 12 and 12 are so arranged that the sterilizing effect of the ultraviolet rays can be spread over the whole of the water 1a in the water storage tank 1.
Is set, and the disinfection effect by the ultraviolet rays sufficiently acts on the water 1a in the water storage tank 1.

Since the drain valve 3 is closed when energized, the energization of the humidifier is controlled, for example, by a timer control.
If it is set to be automatically stopped for a predetermined time every time, the drain valve 3 is opened periodically, and the water 1a in the water storage tank 1 is completely replaced. Therefore, the inside of the water storage tank 1 is more clean and suitable.

The operation of the humidifier is automatically controlled by the control means 4 except for the operation of turning the power on and off by the user.

In general, water tanks of various sizes having different capacities are required depending on the purpose of use and scale of use of the user. Therefore, a water tank is prepared in which the depth and height are constant and only its length is variously varied, and according to the length of the water tank,
Determine the number of UV lamps to be installed. If you do this,
It is possible to cope with any capacity of humidifier with a common standard ultraviolet lamp, which can contribute to cost reduction.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a humidifier according to one embodiment of the present invention.

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

FIG. 3 is an enlarged sectional view of a seal member in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water storage tank 1a Water 3 Drainage opening / closing valve (drainage device) 4 Drainage control means 6 Ultrasonic oscillator 12 Ultraviolet lamp (ultraviolet ray generator) 13 Front wall (longitudinal surface of water storage tank) 15 Container 16 Ultraviolet lamp insertion port 18 Container reception Part 19 Container mounting hole 21 Seal member 23 Mounting part 22 Container holding part 24 Annular convex part

Claims (11)

[Claims] 1. A horizontally long water storage tank (1), and the water storage tank (1)
A group of ultraviolet ray generators (12, 12) provided with waterproofness under the water surface of the water tank, wherein the sterilization effect of the ultraviolet rays generated by the group of ultraviolet ray generators (12, 12) is improved. (1) so that the whole of the water (1a) in
A humidifier, wherein the group of ultraviolet ray generators (12, 12) are arranged side by side in the longitudinal direction of the water storage tank (1). 2. A humidifier according to claim 1, wherein each of said ultraviolet ray generators (12) is supported on a surface (13) extending in a longitudinal direction of said water storage tank (1). 3. Each of the ultraviolet ray generators (12) has an elongated shape, and each of the ultraviolet ray generators (12) is horizontally arranged so as to be orthogonal to the length direction of the water storage tank (1). The humidifier according to claim 1. 4. A plurality of ultrasonic vibrators (6, 6) arranged inside the water storage tank (1) in the longitudinal direction thereof, and each of the ultraviolet ray generators (12) is connected to an adjacent supersonic vessel. The sound wave transducers (6, 6) are arranged between each other.
Or the humidifier according to 3. 5. A drainage device (3, 3a) for discharging the water (1a) in the water storage tank (1), and the water (1a) in the water storage tank (1) is periodically drained. The humidifier according to claim 1, 2, 3, or 4, further comprising a drain control means (4) for controlling the drain device (3, 3a). 6. The waterproof structure according to claim 1, wherein each of said ultraviolet ray generators (12) is provided with waterproofness by the following constitution.
The humidifier according to any one of the preceding claims. (1) A container (15) that accommodates each of the ultraviolet ray generators (12) and has a permeability of ultraviolet rays, and has a closed portion other than a port (16) for inserting each of the ultraviolet ray generators (12). ). (2) The water storage tank (1) is provided with each of the containers (1).
And 5) a container receiving portion (18) for receiving liquid-tight under the water surface. (3) The respective ultraviolet ray generators (12) are located inside the water storage tank (1), and the respective ultraviolet ray generator insertion ports (16) are located outside the water storage tank (1). Each of the containers (15) is supported by each of the container receiving portions (18). 7. An ultraviolet ray generator (12) which accommodates an ultraviolet ray generator (12) and has a transparency to ultraviolet rays, and
2) a container (15) having a portion other than the opening (16) for inserting the container closed, and a water storage tank having a container receiving portion (18) for receiving the container (15) in a liquid-tight manner below the water surface. The container (1) such that the ultraviolet ray generator (12) is located inside the water storage tank (1) and the ultraviolet ray generator insertion port (16) is located outside the water storage tank (1).
5) A humidifier, wherein the humidifier is supported by the container receiving portion (18). 8. The humidifier according to claim 6, wherein each of the container receiving portions (18) is configured to detachably hold each of the containers (15) with respect to the water storage tank (1). . 9. Each of the container receiving portions (18) is provided between a container mounting hole (19) formed in the water storage tank (1) and the container mounting hole (19) and the container (15). A humidifier according to claim 6, 7 or 8, comprising an interposed sealing member (21). 10. The sealing member (21) includes a mounting part (23) for attaching to the water storage tank (1) and a container holding part (22) extending in a length direction of the container (15). Become,
A humidifier according to claim 9. 11. The method according to claim 9, wherein the sealing member has an annular convex portion on an inner peripheral surface thereof, the elastic convex portion being in close contact with an outer peripheral surface of the container by its elasticity. Humidifier as described.