JPS6249546B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a refrigerator having a freezing compartment and a refrigerating compartment, and a cooling unit disposed in the freezing compartment.

(b) Prior art The refrigerator disclosed in Japanese Patent Publication No. 58-51180 (IPCF25D17/08) is equipped with a partition wall that forms a supply path and a return path inside the refrigerator, which is defined by an insulating box. The interior is partitioned into left and right sides to form a freezer compartment and a refrigerator compartment, and a cooler and a blower fixed to the back wall of the insulation box are arranged at the rear of the freezer compartment, and a cooler that covers the cooler and the blower. The configuration with the cover in place is shown.

According to such a configuration, the cold air that has undergone heat exchange in the cooler is forcedly circulated to the freezer compartment using the blower to cool the freezer compartment, while a portion of the cold air is supplied from the supply path to the refrigerator compartment. The refrigerator compartment is further cooled by being returned from the refrigerator compartment to the freezing compartment through a return path. By the way, since the cooler uses a plate fin type, its width, that is, the width of the air inlet, is restricted by the partition wall, and in addition to the cold air returned from the freezer compartment, Because it also sucks in the cold return air from the refrigerator compartment and exchanges heat with it, it not only has the disadvantage that clogging (blockage) due to frost buildup occurs more quickly than in coolers that cool only one compartment of the freezer compartment or refrigerator compartment, but also the heat exchange Since the capacity is also limited, there is also the drawback that it takes a long time to lower the temperature of the freezer and refrigerator compartments to a predetermined temperature. In order to solve this drawback, it is possible to increase the thickness of the cooler to increase its heat exchange capacity, but this creates a new drawback that causes a reduction in the volume of the freezer compartment.

(c) Purpose of the invention The purpose of the present invention is to solve the drawbacks of the prior art.

(d) Structure of the Invention A heat insulating box with a front opening defining the inside of the refrigerator, partitioning the inside of the refrigerator into left and right to form a freezer compartment and a refrigerator compartment, and bulging toward the refrigerator compartment to form a rear part of the freezer compartment. A partition wall having a rear wall portion forming an expanded space whose width is wider than the width of the opening of the freezing chamber, that is, a space for increasing the volume of the freezing chamber, and a front wall portion forming a supply path and a return path that communicate the freezing and refrigeration chambers. and a cooling unit that is provided with a case that accommodates and supports a cooler and a blower, and is disposed at the rear of the freezing chamber and has one side thereof facing the widened space, and has one side of the cooler and a case that supports the air blower. A refrigerator that is housed in a widened space and has a wide air inlet of the cooler.

(E) Embodiments of the Invention Below, embodiments of the present invention will be described based on the drawings. In the figure, 1 is an under-counter type refrigerator used in cooking areas such as restaurants, and each of the front openings is made of a heat insulating material. The main body is composed of a horizontally long insulation box 2 with two freezer compartment doors 3 and two refrigerator compartment doors 4A and 4B, and a compressor and a condenser (not shown) are housed and installed on the left side of the main body. A machine room 5 is formed. Reference numeral 6 denotes a partition wall made of a heat insulating material, which is arranged vertically inside the refrigerator defined by the insulation box, partitions the inside of the refrigerator into left and right sides, and serves as a partition wall for the freezer compartment 7, the refrigerator compartment 8, and the openings of these two compartments. 9 and 10 are formed. This partition wall is
A front wall part 11 where both the freezer compartment door 3 and the refrigerator compartment door 4A touch on the front, and the refrigerator compartment 8 from the rear end of this front wall part.
A curved wall portion 12 that protrudes to the side and has an inclined surface 12A on its back surface, and a rear wall that extends rearward from this curved wall portion and bulges into the refrigerator compartment 8, and whose back surface is in contact with the back wall 2A of the insulation box. A widening space 7A having a crank shape consisting of a section 13 and a width of the rear part of the freezer compartment 7 wider than the width of the opening 9 at the curved wall section and the rear wall section.
form. The front wall section has a supply path 14 passing through an upper part and a lower part thereof and having a diagonal shaft shape, and guiding cold air from the freezing compartment to the refrigerator compartment, and a return passage 15 guiding cold air from the refrigerator compartment to the freezing compartment. Freezer compartment 7
An opening/closing device 16 such as a damper/thermostat that communicates with the refrigerator compartment 8 and opens/closes the supply path 14 based on the temperature of the refrigerator compartment 8, a cover 17 with a hole 18 covering this opening/closing device, and a return path 15. A partition plate 20 and a cover 22 with holes 21 are provided to form a detour 19 for detouring cold air upward.

Reference numeral 23 denotes a cooling unit disposed at the rear of the freezer compartment, and this unit includes the plate fin type cooler 2.
4, an axial blower 25 disposed above the cooler, a dew pan 26 with a drain pipe 26A disposed below the cooler, these coolers, the blower,
It is composed of a resin case 27 that accommodates and supports a dew pan, a back cover 28 that covers the back of the case, and a front cover 29 that has a cold air outlet 30 at the top and a cold air suction port 31 at the bottom. Reference numeral 33 denotes a crank-shaped metal fixture, one end of which is attached to the left side of the case 27, and the other end having a notch 33A is attached to the side wall 2B of the insulation box with screws 34, 3, respectively.
5, it is removably fixed. Reference numeral 36 denotes a metal holding member, which has a holding piece 36A at its rear end that holds down the front right side of the case, and whose front end is detachably fixed to the side surface of the freezer compartment of the partition wall 6 with screws 37. The cooling unit 23 is brought into contact with the back wall 2A, and the widened space 7A is covered.
Reference numeral 38 indicates a protrusion-shaped shelf support integrally formed on the inner surface of the side wall 2B of the insulation box, and 39A and 39B indicate shelf supports fixed to the partition wall and the presser. A shelf 40 placed at 7 is constructed and supported. 4
Reference numeral 1 designates a duct cover made of synthetic resin, which has a top surface portion 42 whose rear end touches the top surface of the cooling unit 23, and divides cold air from the air outlet 30 of the cooling unit into the freezer compartment and less into the refrigerator compartment. Both first and second flow dividing parts 43, 44, a front part 45 that directs the cold air for the freezer compartment downward, and a slope part that directs the cold air for the refrigerator compartment diagonally forward to the left and guides it to the supply path 14. 46 are integrally formed. The position of the second flow dividing section 44 is determined in advance depending on the size of the refrigerator compartment 8, but it is sufficient if it is located at a position where about 30% of the total cold air can be diverted as cold air for the refrigerator compartment.

The cooler is composed of a large number of plate-shaped fins 45, both tube plates 46 arranged on both left and right sides of the fins, and meandering refrigerant tubes 47 that penetrate orthogonally through each of the fins and both tube plates, The flanges 46A of both tube plates are supported by the receiving pieces 27A of the case 27, thereby being housed in the case 27. As the case 27 is placed in the freezer compartment 7, a portion of the cooler, ie, the right side thereof, is accommodated in the widened space 7A. Note that the cooling unit 23 is located in the freezer compartment 7.
Due to the arrangement at the rear, the guide groove 4 of the drain pipe 26A
The load can be received by the heat insulating table 48 formed with a diameter of 8A.

According to such a configuration, the rear wall portion 1 of the partition wall 6 that partitions the inside of the refrigerator into the left and right sides and forms the freezer compartment 7 and the refrigerator compartment 8
3 is bulged toward the refrigerator compartment 8 side to form a widened space 7A on one rear side of the freezing compartment 7, and one side of the cooling unit 23 is exposed to this widened space, so that this cooling unit is installed at the rear of the freezing compartment 7. Because of this arrangement, a part of the cooler 24 can be accommodated in the widened space 7A due to the arrangement of the cooling unit 23. As a result, it is possible to use the cooler 24 with a wider width, increasing the refrigerating capacity and increasing the pull-down speed.The width of the air inlet of the cooler 24 is also increased, which reduces the time it takes for the air inlet to become clogged due to frost formation. This increases the cooling operation time. In addition, the cooling unit 23 located at the rear of the freezer compartment 7 is located in a case 27.
Since the cooler 24 and the blower 25 are housed inside and one side thereof faces the widened space 7A,
There is no need to individually arrange the cooler 24 and the blower 25 on the back wall of the heat insulating box 2, and the work of arranging the cooling unit 23 itself becomes extremely simple. Also, widening space 7
Due to the provision of a part of the cooling unit 23 in A, the center of the cooling unit is closer to the refrigerator compartment 8 than the center of the freezer compartment opening 9, and the cooling unit 23 is located closer to the refrigerator compartment 8 than the center of the freezer compartment opening 9. The cold air circulation path is short, and cold air can be smoothly supplied to the refrigerator compartment 8.

(F) Effects of the Invention Since the present invention is configured as described above, it achieves the effects listed below.

The rear wall of the partition wall expands toward the refrigerator compartment to form an expanded space at the rear of the freezer compartment, and a cooling unit with one side attached to this expanded space is placed at the rear of the freezer compartment, so that part of the cooler As a result, the cooling capacity can be improved by using a wider cooler, and the cooling operation time can be extended by delaying the time until clogging due to frost formation. .

The cooler and the blower are housed and supported in the case to form a cooling unit, and then the case is placed in the freezer compartment, which greatly simplifies the work of arranging the cooling unit.

[Brief explanation of the drawing]

The drawings all show an embodiment of the refrigerator compartment of the present invention, and FIG. 1 is a cross-sectional view taken along the line A-A' in FIG. 2, FIG. 2 is an overall front perspective view, and FIG. 3 is a cross-sectional view taken along B-B' in FIG. , FIG. 4 is a sectional view taken along the line C-C' in FIG. 1, FIG. 5 is an exploded perspective view of the cooling unit, and FIGS. 6 and 7 are perspective views showing the installation of the cooling unit. 2... Insulation box, 2B... Side wall, 6... Partition wall, 7... Freezer compartment, 7A... Expanded space, 8... Refrigerator compartment, 9... Freezer compartment opening, 13... Rear wall, 23... Cooling unit, 24
...Cooler, 25...Blower, 27...Case, 33...
Mounting hardware.

Claims (1)

[Claims] 1. An insulating box with a front opening that defines the interior of the refrigerator, and partitions the interior of the refrigerator to the left and right to form a freezer compartment and a refrigerator compartment, and bulges toward the refrigerator compartment so that the width of the rear part of the freezer compartment is the same as that of the freezer compartment. a partition wall having a rear wall portion forming an expanded space that is wider than the width of the opening, and a front wall portion forming a supply path and a return path that communicate the freezing and refrigerating chambers;
A refrigerator comprising a case for housing and supporting a cooler and a blower, and a cooling unit disposed at the rear of the freezer compartment, with one side of the cooling unit provided adjacent to the widened space.