JP3590355B2 - Heater - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The invention relates to a heater.
[0002]
[Prior art]
As a heater for the evaporating agent, one that stores an evaporating container containing an evaporating agent in a container storage portion of a housing and heats the evaporating container with a heater built in the housing to evaporate the vapor of the evaporating agent to an external space. is there.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to improve the efficiency of heating a transpiration container by a heater.
[0004]
[Means for Solving the Problems]
The invention according to claim 1 provides an electrode terminal in which a housing accommodating an evaporating container accommodating an evaporating agent is provided in a housing, and when the heater along the container accommodating portion is incorporated in the housing, the heater is seated on the housing; A heater element that is supported and electrically contacted with a heat dissipation terminal that is in close contact with the heater element in a state of being in close contact with the housing, wherein an electrode terminal of the heater has a central projection that supports the heater element on the back side, and a plurality of springs Foot provided around the protrusion, a plate-shaped molded body and a connecting portion of the plug, resiliently to the supporting surface of the housing at a plurality of springs Foot The seat is seated and an air layer is formed between the seat and the support surface of the housing .
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
As shown in FIG. 1, the heater 10 includes a housing 11 for storing the evaporation container 30 in the housing 11. The container storage part 12 has an upper part opened in a dome shape, and the evaporation container 30 is put in and out of the opening. The inner surface 12A of the container storage portion 12 is formed into a spherical curved surface or a curved surface, and the lower storage space of the container storage portion 12 is formed so that the cross-sectional area gradually decreases from the convex portion 12B. A cap 13 is detachably provided on the front surface of the housing 11 with the container storage section 12 interposed therebetween, and the cap 13 is provided with a fragrance evaporation port 13A.
[0006]
The housing 11 of the heater 10 includes a first housing 11A forming a container housing 12 and a second housing 11B detachably mounted on a side of the first housing 11A opposite to the side forming the container housing 12. The heater 20 is built in between the first housing 11A and the second housing 11B.
[0007]
The heater 20 includes an electrode terminal 21 seated on the support surface 14 provided on the second housing 11B, a heater element 22 supported on the rear surface of the central protrusion 21A of the electrode terminal 21 and in electrical contact with the electrode terminal 21; The heat dissipation terminal 23 is in close contact with the front surface of the first housing 11A in a state of being in close contact with the front surface, and the electrode terminal 21 is connected to the plug 24. The heater 10 is used by inserting the plug 24 into a wall outlet.
[0008]
Here, the heater 10 configures the heater 20 as follows.
As shown in FIG. 2, a plurality of spring legs 21B are provided on the electrode terminals 21 of the heater 20, and the spring legs 21B are seated on the support surface 14 of the second housing 11B. In addition, the electrode terminal 21 is a plate-shaped molded body provided with a resilient projection 21A and a leg 21B made of spring by press molding or the like, and a connecting portion 21C with the plug 24.
[0009]
The heat dissipation terminal 23 of the heater 20 is formed in a plate shape, and the heat dissipation terminal 23 is provided along the curved inner surface 12A of the container housing portion 12 of the first housing 11A. Further, the center of the heat radiation terminal 23 is shifted toward the lower side from the center of the curved inner surface 12A of the container housing portion 12 (a protrusion 12B described later), and the heat radiation terminal 23 is positioned closer to the lower end than the upper end. The heat dissipating terminals 23 are inclined with respect to the vertical plane so as to be closer to the curved inner surface 12A.
[0010]
A heat insulating portion 25 made of a heat insulating air layer 25A is provided on the side of the housing 11 opposite to the side of the heater 20 facing the container storage section 12, in other words, around the seating portion of the electrode terminal 21 in the second housing 11B. The outer surface of 11B was not provided with a radiating fin or a radiating port.
[0011]
The heater element 22 of the heater 20 has a self-temperature control function. That is, when the temperature of the heater 20 (the heater element 22 and the heat radiation terminal 23) exceeds a certain temperature, the resistance of the heater element 22 increases, thereby restricting energization and preventing overheating. For example, when the electrode terminal 21 is made of stainless steel and the heat radiating terminal 23 is made of aluminum, and the heat radiating terminal 23 is set at 60 ° C., the heater 20 has a power consumption of 0.4 W and the inner surface 12A of the container housing 12 has a temperature of 50 ° C. The outer surface of the first housing 11B could be kept at 30 ° C. In the prior art, the power consumption for setting the inner surface 12A of the container housing 12 to 50 ° C. was 1.5 W.
[0012]
The evaporating container 30 has a case 31 for accommodating the evaporating agent 1 formed as a substantially spherical surface 31A along the inner surface 12A of the container storing portion 12 without or with a small gap therebetween. I do. Further, by forming the inner surface of the case 31 outwardly convex and providing the concave portion 31B on the outer surface of the convex shape, the rigidity of the surface is improved and further deformation is prevented. Further, the concave portion 31B is provided in the center of the surface of the evaporation container 30, and the convex portion 12B is provided on the inner surface 12A of the container storage portion 12 of the heater 10 at a position corresponding to the concave portion 31B, so that they are locked to each other. Can be prevented from falling down. The opening of the case 31 is sealed with a film 32 such as a gas-permeable, stretchable film. The transpiration agent 1 may be a mixture of a perfume (which may be an insecticide or the like), a solvent, and a gelled material to form a gel.
[0013]
In the heater 10, the evaporating container 30 is used in an exchangeable manner in the container storage portion 12 of the housing 11, and the evaporating agent 1 evaporates by heating the evaporating container 30 from the outside of the case 31 by the heater 20. Is transmitted through the film 32 to evaporate into the external space. At this time, as the evaporant 1 evaporates, the surface level of the evaporant 1 in the evaporating container 30 decreases due to gravity, and as the internal pressure of the case 31 is reduced by the evaporation of the evaporant 1 on the film 30, It expands and deforms concavely so as to follow the evaporant 1 remaining inside.
[0014]
Therefore, according to the present embodiment, the following operations are provided.
(Action corresponding to claim 1)
{Circle around (1)} In a state where the electrode terminals 21 of the heater 20 are resiliently seated on the housing 11 by the leg portions 21B made of spring, the heater element 22 is backed up and the heater element 22 is seated on the heat radiation terminal 23. Accordingly, the degree of adhesion between the heater element 22 and the heat radiation terminal 23 is increased while the electrical contact failure between the electrode terminal 21 and the heater element 22 is avoided by the spring force of the leg portion 21B of the electrode terminal 21. 11 can also be improved, and the heat transfer from the heater element 22 to the housing 11 via the heat radiation terminal 23 and the heat transfer to the inner surface 12A of the container housing 12 (the heating surface for the evaporation container 30) can be improved. However, the heating efficiency of the evaporation container 30 can be improved with a simple configuration.
[0015]
(2) Since the electrode terminal 21 of the heater 20 is seated on the housing 11 by the spring leg 21B, the contact area with the housing 11 is small, and a heat insulating air layer 25A can be formed between the electrode terminal 21 and the housing 11. . Therefore, it is possible to suppress wasteful heat release in which the heat generated by the heater element 22 escapes to the outer surface of the housing 11 via the electrode terminal 21, and it is possible to improve the efficiency of heating the evaporation container 30. In addition, overheating of the outer surface of the housing 11 due to wasteful heat radiation can be prevented, and it is not necessary to provide a heat radiation fin or a heat radiation hole in the housing 11, and the appearance can be made smart.
[0016]
(Other effects)
{Circle around (3)} The curved inner surface 12 </ b> A of the container housing portion 12 becomes a heating surface surrounding the side surface to the bottom surface of the evaporation container 30, so that the heat concentration on the evaporation container 30 is good and the heating efficiency can be improved.
[0017]
{Circle around (4)} Since the heater 20 is provided along the curved inner surface 12A of the container housing 12, the heat transfer from the heater 20 to the curved inner surface 12A of the container housing 12 (heating surface for the evaporation container 30) is good. The heating efficiency can be improved.
[0018]
{Circle around (5)} Since the heater 20 is provided near the lower portion of the curved inner surface 12A of the container housing 12, even if the remaining amount of the evaporant 1 in the evaporating container 30 decreases and the level of the evaporant 1 drops, In addition, the heat of the heater 20 is transmitted to the evaporation container 30 through the lower portion of the curved inner surface 12A of the container storage portion 12 without waste, and the heating efficiency is not impaired.
[0019]
{Circle around (6)} Since the evaporation container 30 is rounded along the curved inner surface 12A of the container housing 12, the heat transfer from the heater 20 to the evaporation container 30 via the curved inner surface 12A of the container housing 12 is improved. Stable transpiration of the transpirant 1 can be maintained.
[0020]
{Circle around (7)} Since the heat insulating portion 25 is provided on the side of the housing 11 opposite to the side of the heater 20 facing the container storage section 12, the heat generated by the heater 20 is effectively transmitted to the container storage section 12, and the heat is wasted from the opposite side. Is gone. Therefore, overheating of the housing 11 can be prevented even without the radiation fins, and the heating efficiency can be improved.
[0021]
{Circle around (8)} Since the heater 20 has the self-temperature control function, overheating of the container housing 12 can be reliably prevented, and the heating efficiency can be improved.
[0022]
【The invention's effect】
As described above, according to the present invention, the efficiency of heating the evaporation container by the heater can be improved.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a heater.
FIG. 2 is a schematic view showing an electrode terminal.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Evaporator 10 Heater 11 Housing 12 Container storage part 20 Heater 21 Electrode terminal 21B Spring leg part 22 Heater element 23 Heat dissipation terminal 30 Evaporation container

Claims (1)

When providing a container storage portion for storing a vaporization container containing a vaporizing agent in the housing, and incorporating a heater along the container storage portion in the housing,
An electrode terminal in which the heater is seated on the housing, a heater element supported by the electrode terminal and electrically connected thereto, and a radiating terminal closely attached to the housing in a state of being in close contact with the heater element,
An electrode terminal of the heater is a plate-shaped molded body including a central projection that supports the heater element on the back surface, a plurality of spring legs provided around the projection, and a connection portion with a plug . A heater which resiliently seats on a support surface of the housing with a plurality of spring legs to form an air layer between the spring support and the support surface of the housing .

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