JPH1073292A - Humidifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a sure operation of a safety device by a method wherein a heat generating body is provided in a heating device, projected out of the bottom surface of a water tank, and a heat-detecting element is attached to the inner wall of the heating device while the mounting position of the heat detecting element is provided above the heat generating body. SOLUTION: Water, supplied from a tank 7, is heated by a heating device 3 in a water tank 2 and is changed into vapor, then, is sent out into a room together with air from a fan motor 11. In this case, heat, generated by a heat generating body 5, is diffused uniformly by a heat radiating plate 4 substantially and is transferred to water through the heating device 3. When the tank 7 becomes empty and the level of water is lowered, a float 9 is lowered and a lead switch 10 is operated whereby the energizing of the heat generating body 5 is switched off and the operation of the heating device can be stopped safely. When the lead switch 10 is not operated due to the faulty operation or the like of the float 9, the upper end of the heating device 3 is exposed above water and the top surface part of the same is heated abnormally, however, a heat detecting element 12 is attached to the rear side of top surface of the heat heating device 3 whereby the abnormal high temperature of the heating device 3 is detected immediately and the operation of the heat generating body 5 can be stopped safely by de-energizing the heat generating body 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidifier for controlling humidification of a room.

[0002]

2. Description of the Related Art Conventionally, humidifiers of this type have generally been configured as shown in FIGS.

As shown in the figure, a bottom surface of a stainless steel humidifying dish 102 provided in a main body 101 and a bottom surface of a water tank 103 are connected by a pipe 104. Water is supplied to the water tank 103 and the humidifying dish 102 by a tank 105 installed above the water tank 103 so that the water level is constant. A float 106 for detecting the water level provided in the water tank 103 has a heating element 107 fixed around the humidifying dish when the water level decreases.
Is stopped. The fan motor 108 sends out steam generated from the humidifying dish 102 from the main body 101 to the room through the steam guide tube 109.

Further, as shown in FIG. 6, a packing 110 for sealing the main body 101 and the humidifying dish 102 and a holding body 112 for mounting a safety device 111 for preventing overheating are provided. It is screwed to.

In the above configuration, the steam supplied from the tank 105 to the humidifying dish 102 through the water tank 103 and the pipe 104 and heated by the heating element 107 is supplied to the steam guide tube 10.
9 and is blown into the room together with air from the fan motor 108.

[0006] The heating element 10 is provided by the float 106.
When the reed switch 112 for turning on / off the switch 7 is out of order, the safety device 111 for preventing overheating is activated,
In this configuration, the power supply to the heating element 107 is stopped.

[0007]

In such a conventional humidifier, when the reed switch fails, the operation of the safety device for preventing overheating is delayed, and the main body is thermally deformed before the safety device operates. Therefore, it is required that the safety device operates at an appropriate timing.

The present invention has been made to solve such a conventional problem, and has as its object to provide a highly safe humidifier in which a safety device operates at an accurate timing.

Further, in the conventional humidifier, since the heating element is fixed around the humidifying dish, heat is radiated not only to the surface in contact with the humidifying dish but also to the opposite side, so that heat loss is reduced. There is a problem that the humidifier is large, and a humidifier capable of effectively utilizing heat escaping to the opposite side of the heating element is required.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a humidifier capable of effectively utilizing the total heat of a heating element. It is another object of the present invention to provide a humidifier that minimizes the amount of heat escaping to the opposite side of the heating element and has low heat loss.

Further, in the conventional humidifier, there is a problem that the safety device may not operate when a gap is generated due to a variation in the mounting of the sensing device of the safety device, and a mounting structure that reliably operates the safety device is required. Have been.

An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a humidifier having a mounting structure in which a safety device operates reliably.

[0013]

In order to achieve the above object, the humidifier of the present invention has a convex heating tool protruding from the bottom of a water tank, a heating element provided inside the heating tool, A heat detecting element is provided on the inner wall of the heating tool, and the mounting position of the heat detecting element is provided above the heating element.

According to the present invention, a highly safe humidifier in which the safety device operates at an accurate timing can be obtained.

Further, another means includes a convex heating tool provided to protrude from the bottom of the water tank, a heating element provided inside the heating tool, and an auxiliary heat transfer plate provided in close contact with the lower surface of the heating element. When,
It has a bent surface formed at the end of the auxiliary heat transfer plate, and this bent surface is configured to be in contact with the inner side surface of the heating tool.

According to the present invention, a humidifier capable of effectively utilizing the total heat of the heating element can be obtained. Another means is a convex heating tool provided to protrude from the bottom of the water tank, a heating element provided inside the heating tool, and an auxiliary heat transfer plate provided in close contact with the lower surface of the heating element. The structure has a heat radiation preventing plate provided on the lower surface of the heat transfer plate, and a support fitting for supporting the heat radiation preventing plate.

According to the present invention, the amount of heat escaping to the opposite side of the heating element is suppressed as much as possible, and a humidifier with less heat loss can be obtained.

Further, another means includes a support fitting for preventing the heating element from dropping, a notch provided on the support fitting, and a spring detachably engaged with the notch, and the spring is a heat detecting element. Is pressed against the back surface of the top plate of the heating tool.

According to the present invention, a humidifier having a mounting structure in which the safety device operates reliably can be obtained.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention has a convex heating tool protruding from the bottom of a water tank, a heating element provided inside the heating tool, and a heat detecting element mounted on an inner wall of the heating tool. However, the mounting position of the heat detecting element is provided above the heating element, and when the water is in a dry state, the heat from the heating element is not transmitted to the water and the temperature of the top of the heating tool rises. Has an effect that the safety device detects the temperature and operates properly.

Further, a convex heating tool protruding from the bottom of the water tank, a heating element provided inside the heating tool, an auxiliary heat transfer plate provided in close contact with the lower surface of the heating element, It has a bent surface formed at the end of the heat transfer plate, and the bent surface is configured to be in contact with the inner surface of the side surface of the heating tool. It has the effect of transferring heat to the side of the heating tool and also performing water heating on the side of the heating tool.

Also, a convex heating tool protruding from the bottom of the water tank, a heating element provided inside the heating tool, an auxiliary heat transfer plate provided in close contact with the lower surface of the heating element, The heat radiation prevention plate is provided on the lower surface of the heat plate and has a support metal fitting for supporting the heat radiation prevention plate. And has the effect of reducing the heat that escapes.

[0023] Further, there is provided a support fitting for preventing the heating element from dropping, a cutout provided in the support fitting, and a spring detachably engaged with the cutout. The spring connects the heat detecting element to the heating tool. It is designed to be pressed against the back of the top plate, stabilizing the temperature detection sensitivity by eliminating the variation at the time of mounting the heat detecting element, and mounting it on the support bracket of the heating element, so the number of parts is reduced. It has the effect that it can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0025]

【Example】

(Embodiment 1) FIGS. 1 and 2 show sectional views of a humidifier.
In FIG. 1, a convex heating tool 3 is protruded from the bottom of a water tank 2 provided in a main body 1, and a heat radiating plate 4 made of a material having a high thermal conductivity such as an aluminum plate is provided on the back side of the top of the heating tool 3. And a heating element 5 and an auxiliary heat transfer plate 6 are provided thereunder.
Is pressed from below and supported. A heat detecting element 12 is mounted on the rear surface of the center of the top surface of the heating tool 3 through the central holes provided in the heat radiating plate 4, the heating element 5, and the auxiliary heat transfer plate 6, respectively, in direct contact therewith. A heat diffusion prevention tube 8 is provided around the heating tool 3, and the upper portion of the heat diffusion prevention tube 8 projects above the water surface, and the lower portion is placed on the bottom surface of the water tank 2. A water supply tank 7 for supplying water to the water tank 2 at a constant water level is detachably mounted. When the water supply tank 7 becomes empty, the water level of the water tank 2 drops, the float 9 also drops, and the reed switch 1
0 is activated and the heating element 5 is safely stopped by a control unit (not shown). Fan motor 11
Is for transporting the steam generated by the heating element 5 to the outside of the main body 1.

In the above configuration, the water supplied from the tank 7 is heated by the heater 3 in the water tank 2, becomes steam, and is blown into the room together with the air from the fan motor 11. At this time, the heat generated by the heating element 5 is diffused almost uniformly by the heat radiating plate 4 and transmitted to the water through the heating tool 3. Then, when the tank is emptied and the water level drops, the float 9 is lowered and the reed switch 10 is activated, turning off the power supply to the heating element 5 and safely stopping the operation. However, when the reed switch 10 does not work due to malfunction of the float 9 or the like, the upper end of the heating tool 3 is exposed on the water, and the top surface portion is abnormally heated. However, since the heat detecting element 12 is attached to the back side of the top surface of the heating tool 3, an abnormally high temperature above the heating tool 3 heated by the heating element 5 is immediately detected, and the control unit (not shown) controls the heating element. 5 can be safely stopped by turning off the power supply.

In the present embodiment, the heat detecting element 12 is mounted on the back side of the top surface of the convex heating tool 3. However, the mounting position of the heat detecting element 12 on the heating tool 3 is higher than the heating element 5. Since the rise in the temperature of the heating tool 3 can be detected at an early stage when the water level is lowered, there is no difference in the operation and effect.

(Embodiment 2) FIGS. 1 to 3 show sectional views of a humidifier. Components having the same configuration as those described in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 1, on the rear side of the top surface of the convex heating tool 3, a support metal fitting 13 for mounting the heat radiating plate 4, the heating element 5 and the auxiliary heat transfer plate 6 one on top of the other and pressing and holding it from below is provided. ing.

In FIG. 2, a bent portion 6a bent downward is formed at the end of the auxiliary heat transfer plate 6, and the bent portion 6a is
And is mounted in contact with the side plate inner surface 3a.

In FIG. 3, on the lower surface of the auxiliary heat transfer plate 6, there is provided a heat radiation prevention plate 15 made of a material having a relatively low thermal conductivity (synthetic resin, stainless metal, etc.).

With the above configuration, the heat radiated downward by the heating element 5 is transmitted to the auxiliary heat transfer plate 6, and further transferred from the bent portion 6a to the inner side surface 3a of the heating tool 3, and the vicinity of the outer side surface 3b of the side plate 3b. Heating the water can increase the amount of humidification.

(Embodiment 3) FIG. 3 is a sectional view of a humidifier. Components having the same configuration as those described in the first and second embodiments are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 3, on the lower surface of the auxiliary heat transfer plate 6, there is provided a radiation prevention plate 15 made of a material having a low thermal conductivity such as iron or chrome steel. A support fitting 13 for pressing the heat radiation prevention plate 15 to prevent the heating element 5 from dropping is provided, and an end of the support fitting 13 is fixed to the main body 1 together with the heating tool 3.

With the above configuration, the heat of the heating element 5 is
The heat dissipated from the lower surface of the auxiliary heat transfer plate 6 to be transmitted to the supporting member 13 is cut off, and the amount of heat transferred to the support fitting 13 and escaping is reduced, so that the amount of heat transfer to the heater 3 can be increased, and the humidification efficiency can be improved.

(Embodiment 4) FIGS. 2 to 4 are a cross-sectional view and an exploded perspective view of an attachment to a heat detecting element. Components having the same configurations as those described in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

In FIG. 2, a heat radiating plate 4, a heating element 5, and an auxiliary heat transfer plate 6 are provided on the back surface of the convex heating tool 3 and supported by a supporting bracket 13, and heat is generated by a spring 14 attached to the supporting bracket 13. The heating element 3 is pressed against and fixed to the sensing element behind the top surface.

In FIG. 3, a heat radiation preventing plate 15 is provided below the auxiliary heat transfer plate 6. In FIG. 4, a pair of cutouts 13a are provided in the support fitting 13 so that the heat detecting element 12 can be directly pressed against the back surface of the heating tool 3 and fixed by rotating and engaging the spring 14. .

According to the above configuration, since the spring 14 presses the heat detecting element 12 against the back surface of the top surface of the heating tool 3, there is no gap between the heat detecting element 12 and the heating tool 3.
The sensitivity of the heat detecting element 12 is kept almost constant. Further, since the spring 14 and the heat detecting element 12 are mounted on the support bracket 13, the number of mounting parts does not need to be increased.

[0040]

As described above, according to the present invention, by providing the mounting position of the heat detecting element above the heating element, the heat from the heating element is not transmitted to the water when the water is in a drought state, so that the heating tool can be mounted on the heating element. An advantageous effect is obtained in that the plate temperature increases and the safety device detects the temperature and operates properly.

The auxiliary heat transfer plate is discharged from the lower portion of the heating element by contacting the bent surface formed at the end of the auxiliary heat transfer plate which is in close contact with the lower surface of the heating element with the inner surface of the side surface of the heating tool. An advantageous effect is obtained in that heat is transferred to the side surface of the heating tool, and water is also heated on the side surface of the heating tool.

Further, by providing a heat radiation preventing plate formed of a material having low thermal conductivity on the lower surface of the auxiliary heat transfer plate, the heat radiated from the lower surface is blocked to increase the amount of heat transferred to the heating tool, and the humidification is performed. The advantageous effect that efficiency can be improved is obtained.

Further, by pressing the heat detecting element against the back surface of the top plate of the heating tool, there is obtained an advantageous effect that the temperature detecting sensitivity is stabilized by eliminating the variation at the time of mounting the heat detecting element.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a humidifier according to Embodiments 1 and 2 of the present invention.

FIG. 2 is a sectional view of an essential part of the first, second and fourth embodiments.

FIG. 3 is a sectional view of a main part of the humidifier of the first to fourth embodiments.

FIG. 4 is an exploded perspective view of a main part of a spring attachment according to the fourth embodiment.

FIG. 5 is a sectional view of a conventional humidifier.

FIG. 6 is a sectional view of the main part.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Water tank 3 Heating tool 4 Heat sink 5 Heating element 6 Auxiliary heat transfer plate 12 Heat detection element 13 Support bracket 13a Notch part 14 Spring 15 Heat dissipation prevention plate

Claims (4)

[Claims] 1. A heating device having a convex shape protruding from a bottom surface of a water tank, a heating element provided inside the heating device, and a heat detecting element mounted on an inner wall of the heating device. A humidifier in which an element mounting position is provided above the heating element. 2. A heating tool having a convex shape protruding from the bottom of the water tank, a heating element provided inside the heating tool, an auxiliary heat transfer plate provided in close contact with a lower surface of the heating element, A humidifier having a bent surface formed at an end of a heat transfer plate, the bent surface being in contact with an inner surface of a side surface of a heating tool. 3. A heating tool having a convex shape protruding from the bottom of the water tank, a heating element provided inside the heating tool, an auxiliary heat transfer plate provided in close contact with the lower surface of the heating element, A humidifier having a heat radiation preventing plate provided on a lower surface of a heat transfer plate and a support fitting for supporting the heat radiation preventing plate. 4. A supporting member for preventing a heating element from dropping, a notch provided on the supporting member, and a spring detachably engaged with the notch, the spring connecting the heat detecting element to the heating member. The humidifier according to claim 1, wherein the humidifier is pressed against the back surface of the top plate.