JPS61289281A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improving the performance of a refrigerator. In conventional refrigerators, a cooler installed in or near the refrigerator sucks in air from inside the refrigerator, cools it, and then discharges it into the refrigerator through a duct installed near the ceiling to keep the inside of the refrigerator at a low temperature. Ta.

However, although the distribution of cold air in this method is made uniform across the width of the refrigerator using a duct on the discharge side, since it is discharged from above, the low-temperature cold air is directed downward. It is not possible to balance the characteristics of specific gravity, which is intended to be used, and the characteristic of circulation through a path with as little pressure loss as possible, and the flow of air inside the refrigerator tends to be biased to one part, without sufficient heat exchange. Return to cooler, bypass development will occur. As a result, there were disadvantages such as poor uniformity of temperature inside the refrigerator, and the need to design the entire equipment with sufficient margin.

In addition, as a method to compensate for this drawback, cooling coils are placed on each side of the refrigerator, and by passing refrigerant through these coils, the heat that enters from the walls, ceiling, and floor of the refrigerator is absorbed by each cooling coil. There is.

In this case, since the coils are arranged near the generation of the infiltrated heat, it is better than the above-mentioned duct-based air blowing method in terms of the infiltrated heat from the outside surface.

However, the biggest disadvantage of this method is that it relies only on internal natural convection for other heat loads such as opening and closing of entrances and exits, and that it is difficult to defrost. Moreover, the reason why it is only adopted in
In order to make the temperature uniform across all parts of the wall, it was necessary to have multiple refrigerant systems, each with its own adjustment function.

Another major drawback is that the space required for the coils to be placed all over the surface is large, resulting in a small space that can be effectively used as a refrigerator, and the overall efficiency is not that great. Another drawback is that the weight of the coils is large. There is one.

The present invention was made to improve these drawbacks, and the cold air from the cooler is discharged from the duct installed below the inside of the car over the entire floor surface of the car, and the cool air at the bottom temperature fills the inside of the car from the bottom. In addition, along the walls of the storage room, a continuous passage upward is ensured so that the cold air, which has become lighter and warmed by heat exchange with the infiltrated heat, can easily rise. The system is designed to take in the humidified cold air that collects above and return it to the cooler.

Embodiments of the present invention will be described in detail below based on the drawings.

In the Wgl diagram, a refrigerator compartment 3 is covered with a heat insulating material 6, and cold air is blown into the refrigerator from a blow-off hole 11 provided in a lower duct 1. The blown out cold air passes through a passage 30 provided between the floor plate 4 and the refrigerator bottom 9, and quietly spreads over the entire surface of the refrigerator bottom 9, and then passes through a passage 30 provided between the backrest 5 and the refrigerator wall 8. , passes through the passage 30 shown in FIG. 2 and rises along the warehouse wall surface 8.

During this time, the temperature of the cold air rises due to the infiltrated heat, and the specific gravity becomes lighter accordingly, so it rises and is finally sucked in through the intake port 22 provided in the upper duct 2, cooled again through the cooler air, and sent to the lower duct. During this time, the bottom plate 4 and backrest 5 are not made airtight, so cold air flows through the gaps in the refrigerator compartment 3. However, there is almost no heat penetrating into the center. , most of it comes from the refrigerator bottom 9, the refrigerator walls 8, and the ceiling 10, so the cold air exchanges heat with the infiltrated heat here and rises in temperature through the continuous path with less resistance. , it is constructed so that it can rise without falling.

In the method of the present invention, the lower part of the entire chamber is always filled with colder air, and the colder air that has reached the highest temperature is taken out from the upper duct 2.

Therefore, the greater the amount of heat infiltration, the greater the rise rate, and the higher the rate of rise on the refrigerator wall, and the more cold air that is sent passes through the refrigerator wall, resulting in extremely high cold air usage efficiency.

In addition, in the conventional example shown in FIG. 3, the backrest 5 and the like actually hindered heat exchange, and the cold air returned to the cooler without having a sufficient effect.

In addition, in another conventional example shown in FIG. 4, heat exchange with the refrigerant flowing through the hairpin coil 12 is used instead of cold air.
In order to achieve sufficient performance, it is necessary to install the hairpin coil 12 at great cost and space, which leads to various disadvantages such as a reduction in the usable internal volume. As mentioned above.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of a configuration showing an embodiment of the present invention. FIG. 2 is a horizontal sectional view showing a part of the configuration of the embodiment of the present invention. Figure W2B is a configuration cross-sectional view showing a conventional method. FIG. 4 is a sectional view showing another conventional method. 1, lower duct 2, upper duct 39, refrigeration room 48 beds, board 50 loads, sliding 60 insulation materials 7, cooler 81 storage, wall 90 storage bottom 10, ceiling ratio cold air outlet 12, hairpin coil 22, cold air intake 309 holes road

Claims (1)

[Claims] Cool air is sent from the bottom of the refrigerator and from the top. The heated cold air is sucked in and circulated to the cooling device. At the same time, provide a continuous path for cold air. Cold air spreads to the bottom of the refrigerator and rises along the inner walls of the refrigerator. A cooling device characterized by a structure that makes it easy to use. Warehouse.