JP2606344Y2 - Electronic cool box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing leakage of water from an electronic cool box.

[0002]

2. Description of the Related Art Various types of electronic refrigerators have been considered, but the cooling structure is such that the inner container is cooled by an electronic cooling element, thereby cooling the contents. A material with high thermal conductivity such as aluminum is used. For this reason, when the lid is opened and closed in a state where the contents are cooled, the outside air is cooled by the inner container to form dew condensation, and water is easily accumulated inside. The normal electronic cool box 3 is considered to be portable as shown in FIG. 10 and has a horizontal structure in which an opening is directed upward, so that even if water accumulates inside, the lid is opened. No water leaks out.

[0003] However, in the case where the electronic cool box 3 is installed so that the opening is oriented in the horizontal direction, that is, when the lid is opened, there is a problem in that the water collected inside leaks to the outside. .

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object the simple structure and the water that has accumulated inside even when placed vertically. An object of the present invention is to provide an electronic cool box that can prevent leakage.

[0005]

The electronic cool box of the present invention is:
In an electronic cool box 3 having a box shape on one side and an openable / closable lid 2 provided on the opening 1, an opening of the main body is provided.
Legs 10, 11, 1 on the bottom and side faces opposite to
2 and 13 are provided to make both horizontal and vertical installation possible.
The legs 12 and 13 of the opening 1 have the legs 12 on the opposite side.
It is longer than the leg 13 so that the opening 1 is horizontal.
Installed surface located below the inner container when vertically is be comprised as the opening 1 side becomes high and low inner side in the conventional example of the problem described above by adopting such a configuration The purpose of the present invention has been achieved by solving the points.

[0006]

According to the present invention having the above structure, the bottom leg is provided.
A horizontal position in which the openings 1 face upward with the parts 10 and 11 grounded,
The vertical legs 12 and 13 on the side are grounded and the opening 1 faces sideways.
In addition to being able to use both, the opening 1 is oriented vertically
At the time of placing, the leg 12 on the opening 1 side is higher than the leg 13 on the opposite side.
And water collected inside leaks from opening 1.
Ground surface without grounding the side wall and bottom surface
There may be a gap between them.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. An inner surface of the inner container 4 having a storage space 9 therein, a main body 5 constituting an outer shell, and a heat insulating material 6 such as a foam filled between the inner container 4 and the main body 5 form an opening 1 on one side. An electronic cool box 3 is constructed by opening and closing a lid 2 at the opening 1. The lid 2 is attached to the main body 5 so as to be rotatable around a hinge pin 7. When the lid 2 is closed and the opening 1 is closed, the storage space 9 can be sealed by fixing the lid 2 to the main body 5 with the hook 8. It has become. Legs 10, 11, 12, and 13 such as rubber legs are provided on the bottom surface and the left side surface of the main body 1, respectively, and the legs 10 and 11 are grounded so that the opening 1 faces upward. 5
Can be used in a horizontal position, or the main body 5 can be used in a vertical position with the legs 12 and 13 grounded so that the opening 1 is oriented horizontally.
Here, the legs 12, 13 provided on the side surface of the main body 1 are such that when the opening 1 is set to be horizontal, the lower surface of the inner surface of the inner container 4 is higher on the opening 1 side and deeper. The leg 12 is slightly longer than the leg 13 so that the side is lower. By doing so, even when the main body 5 is installed vertically with the legs 12 and 13 grounded so that the opening 1 is oriented horizontally, the inner container 4 is tilted and accumulated in the inner container 4. A certain amount of water 14 can be stored in the inner container 4. On the other hand, when the main body 5 is placed horizontally with the legs 10 and 11 grounded so that the opening 1 faces upward and the main body 5 is placed horizontally, the water 14 that has accumulated inside collects at the bottom of the inner container 4. There is no. In addition, when the ventilation opening 16 mentioned later is provided in the surface in which the leg parts 12 and 13 were provided, even if the leg parts 12 and 13 are grounded and installed vertically, the ventilation opening 16 is prevented from being blocked. In the above embodiment, when the lengths of the legs 12 and 13 are changed and the openings 1 are installed so that the openings 1 are oriented sideways, the surface located below the inside is designed such that the opening 1 side is high and the back side is low. However, instead of the legs 12 such as rubber legs, a convex shape may be provided on the side surface of the main body 5.

The side covers 5 are provided on both sides of the main body 5 facing each other.
In the embodiment shown in the figure, one of the side covers 50 is provided with the legs 12 and 13. The side cover 50 is provided with a handle 15 for easy carrying.
The side cover 50 is provided with a ventilation port 16 through which air from the outside circulates. A display panel 18 for operating the electronic cool box 3 is provided on the side cover 50.
The display panel includes a display unit such as an LED for displaying the operation of refrigeration and storage, an operation switch for switching the operation of refrigeration, storage, and stop, and a capability switch for switching the cooling capability. A switch 17 is provided. Further, a cord storage unit (not shown) with a door for inserting an AC or DC cord 19 is provided on one side surface of the main body 5.
The cord storage section has a connection socket for connecting the cord 19. In addition, the electronic cool box 3 can use a household power supply, a vehicle DC 12 V, DC 12 storage battery power supply, or the like.

FIG. 3 is a cross-sectional view showing the structure of the electronic cool box 3 of the present invention, FIG. 4 is an exploded perspective view, and FIG. 5 is a portion of the radiator fin 20 in which a hole 22 is formed in a fin base 20a. FIGS. 6 and 7 are longitudinal sectional views showing the structure of a cooler 23 composed of an electronic cooling element such as a Peltier element system and its peripheral portion, and FIGS. 8 and 9 are radiation fins 20. It is a perspective view which shows each example of.

The inner container 4 accommodates the object to be cooled in the internal accommodating space 9 and is formed of aluminum having a good thermal conductivity and is thermally coupled to the main body 5 which is an outer box. And tightly adhered. The radiating fins 20 are for efficiently dissipating Joule heat generated in the heat generating portion 24 of the cooler 23, and are formed of a material having a good thermal conductivity. The heat absorbing portion 47 of the cooler 23 is closely attached to the heat generating portion 24 of the cooler 23 through heat transfer grease.
The heat radiation fin 20 and the spacer 2
6 are fixed by screws 27 to form the radiation fins 20,
The cooler 23 and the spacer 26 are fixed, and the inner container 4 and the spacer 26 are interposed between the surrounding frame 38 and the radiating fins 20 with the heat insulating packing 25 interposed therebetween in a state where the block is placed in the surrounding frame 38. It is attached by being fixed with a screw 29. Here, the surrounding frame 38 serves to hold the cooler 23, and may be formed integrally with the main body 5 as shown in FIG. In this embodiment, an example is shown in which a ventilation port 16a for suction and a ventilation port 16b for exhaust provided on a surface perpendicular to the ventilation port 16a are provided as the ventilation ports 16. That is, a suction ventilation port 16a is provided to face the radiating fins 20, and an exhaust ventilation port 16b is provided at right angles to this. Fan 3
0 is a suction vent 16a opposed to the radiation fin 20
The air sucked in by the fan 30 from the suction ventilation port 16a facing the heat radiation fin 20 is exchanged with the heat radiation fin 20 and both exhaust ventilations in a direction perpendicular to the suction ventilation hole 16a. It is released from the mouth 16b.

The radiation fins 20 generate Joule heat when energized to the cooler 23 composed of an electronic cooling element. Therefore, a sufficient cooling capacity cannot be obtained as it is, so that it is necessary to dissipate the Joule heat. The amount of heat absorbed by the cooler 23 composed of an electronic cooling element is proportional to the supplied current. However, since the Joule heat due to the internal resistance of the Peltier element is proportional to the square of the current, there is a maximum current value at which a maximum heat absorption is obtained when a constant current is supplied. Then, the cooler 23, which is an electronic cooling element, is blown by the fan 30.
The cooling by the cooling fins 20 is performed by dissipating the above-mentioned Joule heat by lowering the temperature of the heat generating portion 24 by cooling with the radiation fins 20 which are in close contact with the heat generating portion 24.

The heat radiation fins 20 are constructed by projecting a plurality of fin portions 20b on a fin base 20a, and the plurality of fin portions 20b are juxtaposed so as to be parallel to each other.
The fin portion 20b has an exhaust ventilation port 1 whose longitudinal direction is on both sides.
It is set to be longer toward 6b. The plate-type heat exchanger of the radiation fins 20 has a large convection heat transfer due to irregularities and holes on the heat transfer surface, has a large heat transfer rate, can easily increase and decrease the electric heating area, can be easily mass-produced, and can be easily reduced in cost. . However, it has the disadvantages of relatively small capacity, small gap between heat transfer surfaces, and large pressure loss per unit length.However, this air-cooled heat exchanger is Regardless, there are advantages that it can be easily used at any time, there is no limit on the amount of use for free, and there is relatively little corrosion and dirt on the heat transfer surface.

A hole 22 penetrates through the fin base 20a. In the radiation fin 20 provided with the hole 22,
When the temperature boundary layer changes direction along the flow wavy surface or the surface of the hole 22, the heat transfer coefficient is increased because the boundary layer is thinned or cut. Further, the hole 22 provided in the fin base 20a functions to reduce the pressure loss by allowing the air fluid to pass through the hole 22. As shown in FIG.
In the arrangement of the holes 22 to 0a, the lattice arrangement has a high pressure loss and a high heat transfer coefficient, and the diameter φ of the holes 22 is a length d substantially equal to the interval S between the fin portions 20b.
The pitch is 1.4 in a square array as shown in FIG.
d (± 0.2) and 2d (± 0.2) are preferable. By providing the holes 22 in the fin base 20a in this manner, the ventilation flow has a reduced flow separation, reattachment or vortex generation, and the heat transfer and pressure loss characteristics are improved.

The holes 22 are arranged in a peripheral portion excluding the size (A × B) of the heat-generating portion 24,
Thereby, the heat radiation efficiency is improved, and the cooling capacity is improved. Further, power consumption can be suppressed by improving the cooling efficiency. Note that, by inverting the current supplied to the cooler 23 composed of the electronic cooling element by the operation switch, the heat absorbing part and the heat generating part of each junction of the electronic cooling element can be switched. It can be used as a storage.

As shown in FIG. 3, the height h ₁ from the bottom of the inner container 4 to the center of the cooler 23 is equal to the inner container 4.
Is arranged to be longer than the center O by h ₂ , thereby improving the cooling speed and cooling capacity by descending and circulating the cooled cool air, thereby increasing the cooling of the contents in the inner container 4. Due to the lowering of the cool air, the air is cooled from above. In addition, a cooling action of the contact heat conduction of the inner container 4 can be achieved, and the improvement of the cooling in the refrigerator can be promoted.

As shown in FIG. 5 and FIG.
In attaching the heat absorbing portion 47 of the third embodiment to the spacer 26, a recess 35 is provided in the spacer 26, and the cooler 2
3 is fitted and attached. In this case, recess 3
5 is a dimension D slightly larger than the cooler 23, and the depth of the recess 35 is a dimension C that is slightly shallower than the thickness of the cooler 23. Positioning is performed by inserting and mounting, and the displacement is prevented when the screw 27 is tightened. At the same time, the radiation fin 20 is larger than the spacer 26 and the radiation fin 2
As shown in FIG. 6, the main body 5 has a recess 5a in the main body 5 while maintaining the gap EC in FIG.
Can be prevented from being obliquely attached at the time of mounting by pressing down on.

As shown in FIGS. 6 and 7, the spacer 26
It has a pyramid shape, and flocculation (flocked) coating 36 is applied to the four faces of the quadrangular pyramid, and the outside and the recess 5a of the main body 5 are blocked by the heat insulating packing 25. When moisture flows in due to air inflow, breathing, etc., dew condensation occurs on the surface of the spacer 26 and adheres to the pyramid surface to reduce the cooling effect. The effect is prevented from lowering.

FIG. 9 shows another embodiment of the radiation fin 20. In each of the embodiments shown in FIG.
Various forms of b are shown. FIG. 10A,
In (c), (d) and (e), the fin portion 20b has a hole 3 as well.
The example provided with 7 is shown.

[0019]

[Effects of the Invention] In the present invention, as described above, the main body
Providing legs on the bottom and side faces facing the opening of
It can be used both horizontally and vertically, and the leg on the side is the opening side
Leg is longer than the opposite leg, opening sideways
It is located below the inner container when installed vertically so that
The surface is high on the opening side and low on the back side
From the ground with the legs on the bottom and the opening facing up
And the vertical installation with the side facing the ground and the opening facing sideways.
Not only can be used, but also open vertically when the opening is
The leg on the mouth side is higher than the leg on the opposite side.
The water collected in the part does not leak from the opening, and the side wall and bottom
There is no gap between the ground surface and the ground
It is good .

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a schematic sectional view of the same.

FIG. 3 is a sectional view of the same.

FIG. 4 is an exploded perspective view of the same.

FIG. 5 is a perspective view showing a relationship among a radiation fin, a cooler, and a spacer according to the first embodiment.

FIG. 6 is a side view showing the relationship among the radiation fin, the cooler, and the spacer according to the first embodiment.

FIG. 7 is a cross-sectional view showing the relationship among the radiation fin, the cooler, and the spacer according to the first embodiment.

FIG. 8A is a perspective view for explaining an example in which holes are provided in the heat radiation fins, and FIG. 8B is an explanatory diagram illustrating an example of the arrangement of holes.

FIGS. 9A, 9B, 9C, 9D, and 9E are perspective views showing examples of radiation fins. FIGS.

FIG. 10 is a perspective view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opening 2 Lid 3 Electronic cool box

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-64-84083 (JP, A) JP-A 54-158352 (JP, U) JP-A 60-82130 (JP, U) JP-A 57- 6889 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 11/00 101

Claims (1)

(57) [Scope of request for utility model registration] 1. An electronic cool box having a box-like shape with an opening on one side and a lid that can be opened and closed at the opening .
Provide legs on the bottom and side faces facing the opening,
It can be used both vertically and vertically, and the side legs are
The leg is longer than the opposite leg and the opening is
An electronic cool box characterized in that a surface located below an inner container when installed vertically so that the opening side is high and the back side is low.