JPS5913583Y2 - refrigerator - Google Patents

Description

[Detailed description of the invention] This invention relates to a refrigerator that has shelves that can be freely changed in position inside the refrigerator.In particular, by providing an inner door inside the refrigerator and changing the size of this inner door, Maintaining cooling performance by minimizing the exchange of air with outside air.
The present invention relates to a refrigerator suitable for saving power.

To explain a conventional refrigerator with reference to FIG.
and refrigerator compartment 3.

The freezer compartment 1 is provided with a freezer compartment door 2, and the refrigerated compartment 3 is provided with a refrigerator compartment door 4, so that they are isolated from the outside air and have a structure that allows for the insertion and removal of items.

The air inside the refrigerator is cooled by an evaporator 7 built into the refrigerator, and a fan 9 driven by a fan motor 8 flows into the refrigerator compartment 3, where the freezer compartment 1 and a part thereof are stored. The material is cooled and returned to the evaporator 7, where it circulates while cooling the inside of the refrigerator.

Reference numeral 10 indicates a shelf provided in the freezer compartment 1 and the refrigerator compartment 3, and the position of the shelf can be changed depending on the size of the stored items.

The air inside the refrigerator cooled by the evaporator 7 has a lower temperature and a higher specific weight than the air outside the refrigerator, so if you open the freezer compartment door 2 or the refrigerator compartment door 4 when taking out items, the Then, the low-temperature, high-specific-weight cold air inside the refrigerator flows out of the refrigerator, and the hot, humid air from outside the refrigerator enters the refrigerator, causing air exchange.

When the hot and humid air that enters from outside the refrigerator is cooled by the evaporator 7, the water vapor in the air turns into frost and grows on the evaporator 7, so each time this air is exchanged, the frost in the evaporator 7 further increases. This continues for a long time, and eventually the evaporator 7 becomes clogged with frost, a so-called frost clogging phenomenon.

When frost adheres to and grows on the evaporator 7, ventilation resistance increases.
The flow rate of air flowing through the evaporator 7 decreases significantly, and eventually stops flowing at all, making cooling impossible.

For this reason, conventionally the cooling operation was stopped when the frost-clogged condition approached, and the cooler 7 was stopped using an electric defrosting heater or the like.
The frost that has grown on the evaporator 7 is melted and removed, and the cooling operation is performed again.

The frost that reduces the cooling efficiency of the evaporator 7 and, in the worst case, makes it impossible to cool the evaporator 7, is caused by opening the door when taking items into or out of the refrigerator, causing the air inside the refrigerator to become low-temperature and Due to the large amount of air flowing out of the refrigerator, hot, humid air with a small specific weight enters the interior of the refrigerator and air is exchanged.

Refrigerators these days tend to be larger, and the doors are therefore larger, allowing for a larger amount of air to be exchanged.

Another cause is moisture attached to or stored in the refrigerator, but this is often far less than the moisture brought in by the air exchanged when the door is opened and closed.

This idea was based on the above-mentioned considerations, and it minimizes the amount of air inside the refrigerator that is exchanged with the hot and humid air outside even if the door is opened when putting things in and out of the refrigerator. 7
The purpose is to reduce frost formation, maintain efficient cooling operation, and reduce the number of times defrosting is required to save power.

The features of this invention are the freezer compartment door 2 and the refrigerator compartment door 4.
In order to prevent the cold air inside the refrigerator from flowing out of the refrigerator when the refrigerator is opened, and to prevent the exchange of air with the air outside the refrigerator, there is a Furthermore, an inner door consisting of multiple small inner doors is provided, and the inner door is
The size can be freely changed according to the position of the shelf 10.

An embodiment of this invention will be described in more detail below with reference to FIGS. 2 to 5.

Note that in FIGS. 2 and 3, the same reference numerals as in FIG. 1 indicate the same parts.

The freezer compartment 1 and the refrigerator compartment 3 have an inner door 11 which is further comprised of a plurality of small inner doors 12 on the inside of the freezer compartment door 2 and the refrigerator compartment door 4.
will be established.

The small inner door 12 has a mounting member 13 on one end side, for example, as shown in FIG. 4, and also has a small inner door connecting mechanism, such as a connecting groove 14, on the upper end.

As shown in FIG. 5, the small inner door 12 is supported by a plurality of pillars 15 provided inside the refrigerator via its mounting members 13 so as to be movable and rotatable in the vertical direction.
The lower end of 2 is inserted into the connection groove 14B of the small inner door 12A one step below, and the two are stacked continuously in the vertical direction.

Therefore, when the freezer compartment door 2 or the refrigerator compartment door 4 is opened, cold air inside the refrigerator does not flow out, and hot and humid air from outside the refrigerator does not flow in.

When taking out items stored on the shelf 10 in the refrigerator or storing items on the shelf 10, lift the small inner door corresponding to the shelf part upward once and connect it with the small inner door one step below. After cutting the connection and rotating it slightly in the lifted state, it is lowered again to cut the connection with the small inner door one step above, and then fully opens.

As a result, only the small inner door of the shelf portion to be taken in and taken out is in an open state.

In addition, when using the shelf 10 by moving the position depending on the size of the items to be stored, the lower end of the small inner door 12 can be moved to the other small inner door 12.
One inner door 11 can be stacked continuously by inserting it into the connecting groove 14 at the upper end, or by removing it to change the height and correspond to any desired shelf spacing.
Make it.

Therefore, by opening the inner door in front of the required shelf, you can take things in and out without any problem.

FIG. 6 is a diagram showing an example of the state of use of the present invention.
The entrance portion of a wide space formed by removing one shelf between 01 and 102 is opened and closed by small inner doors 121 and 122 that are connected and integrated by a connecting groove 14A.

By making the height of the minimum unit of the small inner door correspond to the variable height of each column, the small inner door can be constructed with an arbitrary height even if the position of the shelf is shifted.

Although the above description has been made using a refrigerator as an example, the same applies to refrigerators such as showcases, cooling cases for beer and canned juice, etc., where items are taken out and put in relatively frequently.

As explained above, according to this invention, the size of the inner door can be changed to correspond to the shelf 10, which changes depending on the size of the stored items, so that the size of the inner door can be changed depending on the need for putting in and taking out items from the shelf. By opening only the inner door of the part corresponding to the shelf, the amount of air to be exchanged between the inside air and the outside air can be minimized, and air replacement from unnecessary shelves can be prevented. The amount of hot, humid air that enters is reduced, unnecessary cooling of the invading outside air is unnecessary, and frost adhesion and growth in the evaporator is reduced.

Therefore, efficient cooling operation can be maintained for a long period of time, and the defrosting interval can be extended, so the number of times of defrosting can be reduced and power can be saved.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a conventional refrigerator, Fig. 2 is a sectional view of the refrigerator of this invention, Fig. 3 is a diagram showing the refrigerator shown in Fig. 2 with the door open, and Fig. 4 is a sectional view of the refrigerator of this invention. FIG. 5 is a perspective view showing a single small inner door, and FIG. 5 is a perspective view showing a state in which a plurality of small inner doors shown in FIG. 4 are stacked. FIG. 6 is a diagram showing an example of the usage state of the present invention. 1... Freezer compartment, 2... Freezer compartment door, 3.
・Curved refrigerator compartment, 4... Refrigerator compartment door, 5...
Outer box, 7... Bent evaporator, 1o... Listening shelf, 11...
・Inner door, 12...Small inner door, 14...Curved connection groove,
15... Prop.

Claims (1)

[Scope of utility model registration request] In a refrigerator that has a plurality of shelves that can be changed in position inside the refrigerator and has a door, the refrigerator is rotatably supported on a common support and with a predetermined gap in the axial direction of the support, inside the layer. An inner door is provided which opens and closes the entrance of each room divided by upper and lower shelves, and the upper end surface of each of the small inner doors is connected to the lower end surface of the adjacent small inner door. A small door connecting groove mechanism is provided that engages with the small door connecting groove mechanism, and the plurality of small doors are brought into a connected state by the small door connecting groove mechanism, and the connected state can be released by lifting the small door in the direction of the support column. A refrigerator characterized by: