JPH02233964A - Refrigerator - Google Patents

Abstract

PURPOSE:To enable effective cooling of a food on a lower shelf without impeding an effective volume in a refrigerant by a method wherein a fan for agitating the interior of a chamber is mounted on the wall surface of a refrigerating chamber, a duct for guiding cold air is provided, and a discharge port through which cold air is discharged is formed at a stage below a shelf. CONSTITUTION:Cold air discharged from a cooling fan 17 flows within a refrigerating chamber 10 through a louver 22 to cool a food 9. Cold air at the upper part of the refrigerating chamber 10 is introduced through a cold air introduction port 28 of a cover 27 and is discharged with the aid of a fan 24 for agitating the interior of a chamber and discharged through a cold air discharge port 33 in the vicinity of a shelf 11 at a lower stage by means of a duct 31 to cool the food 9 placed on the shelf 11 at a lower stage. After the cold air cools the food 9, it is sucked from the lower part of a partition wall A20, and after it flows through a space part between a drain pan 16 and a lower part 18 of a heat insulating wall 24, it flows between a vaporizer 15 and a side part 19 of a heat insulating wall 12. After the cold air uniformly flows the suction side of a vaporizer 15, it returns to a cooling fan 17. This constitution enables cold air to be reliably discharged to a position near the shelf 11 at a lower stage even when the food 9 is placed on the shelf 11 at an upper stage and cold air is difficult to circulate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air passage configuration that can efficiently maintain the freshness of food stored and preserved in a refrigerator at a uniform temperature.

BACKGROUND OF THE INVENTION In recent years, as a configuration for cooling the refrigerating compartment of a refrigerator, an indirect cooling method that circulates cold air using an evaporator and a blower fan is often used because it does not require defrosting by the user.

Hereinafter, with reference to the drawings, an example of a conventional cooling and air passage configuration will be described using FIGS. 3, 4, and 6.

1 is an under-counter type refrigeration unit used in the kitchens of restaurants, etc., and is an oblong insulating box 3 equipped with a plurality of refrigeration compartment doors 2a, 2b, and 2C each made of an insulating material at the front opening. A refrigerator 1 is constructed, and a machine room 7 is formed on the left side of the refrigerator 1 in which a compressor 4, a condenser fan 5, and a condenser 6 are housed and installed.

8 includes an outer box 8a, an inner box 8b made of synthetic resin, and
This is a heat insulating wall formed of a foamed heat insulating material 8C filled in between, and constitutes a refrigerating chamber 10 for cooling and preserving food 9.

The refrigerator compartment 1o is provided with a shelf 11 on which food is placed.

Reference numeral 12 denotes a heat insulating wall provided in the upper part of the machine room 7, and is press-inserted into the side opening 13 of the heat insulating wall 8.

The heat insulating wall 12 constitutes a cooling chamber 14 for generating cold air.

The cooling chamber 14 includes an evaporator 16, a drain pan 1θ for receiving drain water exposed from the evaporator 16, and an evaporator 1θ.
A cooling fan 17 is provided for blowing the cold air cooled in step 6.

Then, the drain pan 16, the lower part 18 of the insulating wall 12, and the evaporator 1 are connected so that the air introduced into the evaporator 16 flows smoothly.
6 and the side surface 19 of the heat insulating wall 12, a certain ventilation space is ensured. Reference numeral 20 denotes a partition wall A, which introduces relatively warm cold air from the bottom of the refrigerator compartment 1o to prevent a short circuit with the discharged air.
K is fixed. Further, both side surfaces of the evaporator 16 are fixed so as to be sealed by the partition wall B21, and
It is fixed so as to be sealed with the drain van 16. Furthermore, the partition wall B21 is also sealed and fixed to the partition wall A20, and the cooling fan 17 and the evaporator 15 are configured as a completely sealed body.

22 is a p-bar for sending the cold air generated in the evaporator 16 to the refrigerator compartment 1o via the cooling fan 17, and is for making the cold air discharged from the cooling fan 17 into a laminar flow. Reference numeral 23 denotes a drain hole, which is used to guide drain water flowing out from the drain pan 16 to the outside of the cooling chamber 14. Reference numeral 24 denotes an internal stirring fan for uniformizing the air temperature in the refrigerator compartment 1o, and is constructed of a cover 26 provided on the ceiling surface of the refrigerator compartment 10 and having a cold air inlet 26 around the periphery.

Problems to be Solved by the Invention However, with the above configuration, when the food 9 is placed on the upper shelf 11, the food 9 placed on the lower shelf 11 cannot be sufficiently cooled, and the food 9 cannot be cooled sufficiently. There was a problem in that the cooling could not be done sufficiently.

The present invention has been made in view of the above-mentioned problems, and is capable of effectively cooling food on the lower shelves without obstructing the effective internal volume within the refrigerator.

Means for Solving the Problems In order to solve the above problems, the technical means of the present invention is to provide an internal stirring fan on the wall of the refrigerator compartment, a duct for discharging cold air within the foam insulation material, The lower part of the handle is equipped with a discharge port for discharging cold air.

Effects According to the present invention, with the above-described configuration, the cold air in the upper part of the refrigerator compartment can be led out to the lower shelf through the internal stirring fan and the duct.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. Components that are the same as those in the conventional example are designated by the same numbers and detailed explanations will be omitted.

In Fig. 1 and Fig. 2, 27 is the internal stirring fan 2.
This cover is for guiding the cold air discharged from 4 to the lower part, and has a cold air inlet 28 at the upper part and an opening 28' at the lower end, and is provided on the back surface 29 of the refrigerator compartment 1o. 30
is a partition wall C that accommodates the internal stirring fan 24 and separates the intake air on the air introduction side and the discharge air on the air discharge side. 31 is a duct for guiding the cold air discharged by the internal stirring fan 24 to the lower part, and is embedded in the foamed heat insulating material 8C. Further, the lower end opening 28' of the cover 27 and the upper end opening 31' of the duct 31 are tightly joined.

A lower part 32 of the duct 31 is provided with a cold air discharge port 33 for discharging cold air to the vicinity of the lower shelf 11 of the refrigerator compartment 1o.

Next, the operation of the above configuration will be explained.

First, the cold air discharged from the cooling fan 17 is
2 and flows inside the refrigerator compartment 1o to cool the food 9.

The cold air in the upper part of the refrigerator compartment 1o is introduced from the cold air inlet 28 of the cover 27, is discharged by the internal tank stirring fan 24, and is passed through the duct 31 to the cold air outlet near the lower shelf 11. It is discharged from 33. The discharged cold air cools the food 9 placed on the lower shelf 11.

After cooling the food 9, it is sucked in from the lower part of the partition wall A20, flows through the space between the drain pan 16 and the lower part 18 of the heat insulating wall 24, and then flows between the evaporator 16 and the side surface 19 of the heat insulating wall 12. flows. Then, after flowing evenly through the suction side of the evaporator 16, a cycle is formed in which the air returns to the cooling fan 17.

As described above, according to this embodiment, the internal stirring fan 24 is provided on the back surface 29 of the refrigerator compartment 10, and cold air is delivered to the vicinity of the lower shelf 11 through the duct 31 provided in the foam insulation material 8C. Since the configuration is such that the food is discharged, the food 9 is placed on the upper shelf 11,
Even if it becomes difficult to circulate the cold air, the cold air can be reliably discharged to the vicinity of the lower column 11, and the food 9 can be cooled. Since it is provided, it does not protrude into the inside of the refrigerator compartment 1o, and the inside of the refrigerator compartment 10 can be used effectively.

Effects of the Invention As described above, the present invention provides an internal stirring fan on the wall of the refrigerator compartment, a duct for introducing cold air into the foam insulation material,
Since the cold air outlet is provided at the bottom of the refrigerator compartment, even if food is concentrated on the upper shelf of the refrigerator compartment, the food on the lower shelf can be sufficiently cooled. This prevents the interior space from being taken up and allows for effective use of the space in the refrigerating room.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a refrigerator main body according to an embodiment of the present invention;
The figure is a sectional view taken along line A-A% in Fig. 1, Fig. 3 is a perspective view of a conventional refrigerator main body, Fig. 4 is a sectional view of the main body of Fig. 3, and Fig. 6 is a sectional view of Fig. 4. . 8a... Outer box, 8b... Inner box, 8C.
...Foam insulation material, 8...Insulation wall, 10.
...Refrigerating room, 14... Cooling room, 24...
...City stirring fan, 27...Cover,
28... Cold air inlet, 29... Back,
3o...Partition wall C131...Duct,
28'... lower end opening, 31'... upper end opening. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] A refrigerating compartment provided in the refrigerator and configured with an insulating wall formed by filling a heat insulating material between an outer box and an inner box, a cooling compartment communicating with the refrigerating compartment and provided with an evaporator, and a refrigerating compartment provided with an evaporator. The refrigerator includes an internal stirring fan provided on a chamber wall surface, and a duct buried in the heat insulating wall, one end of which opens near the internal stirring fan and the other end of which opens into the lower part of the refrigerator compartment. refrigerator.