JPS583027Y2 - portable refrigerator - Google Patents

Description

[Detailed description of the invention] This invention relates to a portable refrigerator, and by giving the condenser and evaporator in the lid a spiral extending structure, the space inside the lid is effectively used, the whole is miniaturized, and uniform cooling is achieved. It was designed to be effective.

In recent years, as so-called leisure activities have become popular, portable refrigerators have come into widespread use.

These portable refrigerators are generally formed from a molded resin case and a lid that closes the upper opening. It has a structure in which the refrigerant is guided into an evaporator exposed to the refrigerator compartment inside the box, where it is vaporized, and the interior of the refrigerator compartment is cooled by absorbing the heat of vaporization, after which the refrigerant is returned to the compressor.

In other words, the cooling system, which has three main elements: the compressor, condenser, and evaporator, forms a kind of closed circuit.

Although the compressor and condenser may be provided within the side wall of the case, it has recently been proposed to incorporate these elements into the lid in order to downsize the refrigerator itself and improve its appearance.

That is, the lid has a hollow structure, a compressor is provided inside the lid, a condenser is provided close to the inside of the upper surface of the lid, and an evaporator is provided exposed on the lower surface of the lid.

By the way, the main elements of the cooling unit are the alcondenser, the compressor, and the evaporator, which are divided into upper and lower parts.
If the lid is provided in stages, the thickness of the lid will increase, resulting in an increase in size as a whole.

Furthermore, it may be difficult to secure space for an input port or the like in the center of the lid.

Furthermore, depending on the placement of the evaporator, the cooling effect may be uneven.

This invention aims to avoid the above-mentioned inconveniences by providing the condenser and evaporator with a double or more spiral structure extending along the four side edges of the lid.

This invention will be explained in more detail below with reference to the drawings.

1. The schematic structure of a portable refrigerator to which this invention is applied will be explained with reference to FIGS. 1 to 3.

That is, the refrigerator consists of a case 2 for storing things to be refrigerated, such as fish, and a lid 1 for closing the upper opening.The lid 1 further includes a top lid 10 and a bottom lid 20. It consists of a stopper 3 that closes an input port through which items to be refrigerated are put into the case 2.

Each of the parts described above is made of molded resin.

The top lid 10 and the bottom lid 20 are integrally joined at their peripheral edges, and a sealing material 4 such as packing is attached to the contact surface of the bottom lid 20 with the box 2 to retain the cold air inside the box 2. are doing.

A support plate 21 is fixed in the bottom cover 20 parallel to the bottom wall with an appropriate space therebetween, and a molded heat insulating material 22 is interposed between the support plate 21 and the bottom wall. It is set up.

A circumferential groove 23 is formed on the lower surface of the bottom wall of the bottom cover 20 along its four edges, and an evaporator 24 is formed in the circumferential groove 23.
is inserted.

The evaporator 24 has a continuous pipe structure, and has vane-like fins running in the longitudinal direction of the evaporator 24 at the top and bottom to enhance the heat absorption effect.

The compressor 11 is fixed on the support plate 21,
Further, a condenser 12 is provided close to the ceiling wall of the upper lid 10 so as to surround the head of the compressor 110.

This condenser 12 also has a continuous pipe structure similar to the above-described evaporator 24, and has vane-like fins running in the longitudinal direction of the condenser 12 at the top and bottom to enhance the heat dissipation effect.

In Figure 2, the one-dot chain line indicates the capacitor 12.
The path shown by the two-dot chain line is the evaporator 24.
This is the route.

As shown in Fig. 2.3, the condenser 12 connects its upstream end to the flow pipe 16 coming out of the compressor 11, and runs so as to surround the head of the compressor 110 in multiple rectangular spirals. Also on the end is the base plate 2
1 is connected to a dryer 13 fixed on top of the dryer 13.

The capillary tube 14 that comes out of the dryer 13 is wound around a reflux pipe 15 (described later) several times, and then extends downward through the support plate 21 upstream of the evaporator 24 provided under the bottom wall of the bottom cover 20. connected to the end.

The downstream end of the evaporator 24 is connected to the lower end (upstream end) of the reflux pipe 15 .

The reflux pipe 15 extends upward through the support plate 21,
After getting onto the support plate 21, take a big detour and get to the compressor 1.
Connect to 1.

In the above configuration, the cooling medium such as Freon gas is
Compressed in the compressor 11 and sent to the pipe 16
The liquid is sent to the upper condenser 12 through which it is condensed and liquefied.

At this time, heat is released, but the condenser 12
0, so this heat is released into the atmosphere through the ceiling wall.

Furthermore, since the heat insulating material 22 is used, no heat is transmitted to the inside of the box 2.

The cooling medium (Freon) liquefied in the condenser 12 is guided downward through the dryer 13 and into the capillary tube 14, and is introduced into the evaporator 24 exposed inside the box 2, where it is vaporized again while passing through the evaporator 24. A large amount of heat is absorbed from inside the outer box 2 to perform a cooling effect.

Freon gas vaporized in the evaporator 24 enters the reflux pipe 15 at its downstream end, is led upward, and returns to the compressor 11.

By the way, in this invention, in the above configuration, as is particularly clear from FIGS.
A double or more spiral structure is formed along the four side edges of the bottom cover 20, and the evaporator 24 is similarly configured to have a double or more spiral structure along the four side edges of the bottom cover 20. It is.

In the illustrated example, the innermost side of the spiral structure of the condenser 12 is connected to the compressor 11, and the outermost side is connected to the capillary tube 14, but the connection may be reversed if necessary.

Further, although the innermost side of the spiral structure of the evaporator 24 is connected to the capillary tube 14, and the outermost side is connected to the reflux pipe, the connection may be reversed if necessary.

According to this invention, since the condenser and evaporator have a double or more spiral structure extending along the four side edges of the lid, a space is created in the center of the lid, which makes it easier for the objects to be refrigerated. It is now possible to form an inlet with a stopper.
There is no need to open the lid each time to put in refrigerated items.

Furthermore, since the condenser surrounds the compressor, the former can be placed as low as the head of the latter, reducing the thickness of the lid and making the refrigerator that much more compact.

In particular, since the evaporator's spiral structure extends around the entire circumference of the lid, its cooling effect on the cooling chamber is uniform.

[Brief Description of the Drawings] Fig. 1 is a partially sectional side view showing the outline of the structure of the portable refrigerator of this invention, Fig. 2 is a partially omitted plan view, and Fig. 3 is a partially enlarged view. FIG. 1... Lid body, 14... Capillary tube, 2... Box, 15... Reflux pipe, 3... Stopper, 16 ...Feeding vibe, 4...Seal material, 20...Bottom cover, 1
0... Upper lid, 21... Base plate, 11...
...Compressor, 22 ...Insulation material, 1
2... Capacitor, 23... Circumferential groove,
13...Dryer, 24...Evaporator.

Claims (1)

[Claims for Utility Model Registration] The bottom cover of the box-shaped cover 1 surrounded by the top cover 10 and the bottom cover 20 closes the upper opening of the box 2, and the compressor 11 is installed inside the cover 1. A condenser 12 is provided close to the top cover, and an evaporator 24 is provided exposed on the side of the bottom cover facing the case, and both the condenser and the evaporator are connected to the cover. A portable refrigerator characterized by having a double or more spiral structure extending along four inner side edges of the refrigerator.