JPS5843672B2 - Cooling system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device, and more specifically, a fan casing is formed of left and right side walls, an arcuate lower wall, and a front wall, and the center of a fan hole provided in the front wall is located between the left and right sides of the fan casing. It is made eccentric from the center line of the side wall, and one of its purposes is to increase the air volume, make the fan smaller in diameter, and reduce the output of the electric motor used to drive the fan.

Another purpose is to make the speed distribution and air volume distribution of the air discharged from the upper opening of the fan casing non-uniform, so that it is faster and more air to the left or right, so that a large amount of air is required for the required air space. The goal is to actively send information to the areas that need to be addressed.

Still another object is to eliminate the need for a distribution plate or the like for distributing air between areas that require a large amount of air and other areas in the conventional air-requiring space.

The present invention will be explained in detail below based on the drawings.

1 is a fan casing composed of side walls IA, 1B, an arc-shaped lower wall 1C, and a front wall 1D, and the side walls IA, IB and the arc-shaped lower wall 1C have flanges 2 for attachment to the wall to be attached. It is set up.

3 is a fan hole provided in the front wall 1D, and in the illustration, the left and right side walls IA.

The center P of the fan hole 3 is slightly eccentric to the right with respect to the center line l of the fan hole 1B.

The fan casing 1 is fixed to a wall (not shown), a propeller type fan (not shown) is disposed opposite the fan hole 3, and the fan is driven by an electric motor (not shown).

The fan sucks air from the front of the front wall 1D, discharges it rearward, and discharges the air from the upper openings 4 of the left and right side walls IA and IB.

FIG. 2a shows the velocity distribution of the air discharged from the upper opening 4, and shows a tendency for the velocity to become faster in the right direction by eccentrically moving the center P of the fan hole 3 to the right.

According to experiments, a suction propeller-type fan was used, and the fan was rotated clockwise when viewed from the front.
The total air volume increased by about 10 to 20% compared to the case where the fan hole 3 was bored at the same position as the center line 1.

It was also found that the air volume distribution was higher on the right side and lower on the left side in proportion to the wind speed.

Therefore, with the same fan, the same electric motor, and the same fan casing 1 as in the past, the air volume is increased by making the fan hole 3 eccentric, so the fan can be replaced with a smaller diameter one, or the electric motor can be used with a smaller torque. In addition, if the air space above the fan casing 1 is divided into areas that require a large amount of air volume and areas that require a small amount of air,
By simply making the fan hole 3 eccentric to the fan casing 1, air can be sufficiently divided into both locations, and a special distribution plate or the like is not required.

3 to 6 show a cooling device using the fan casing of the present invention.

Figures 3 and 4 show the freezer and $-! l), 5 is an insulating box body composed of an outer box 6, an inner box 7, and a heat insulating material 8 filled between the two boxes, and an electric compressor 9 and a well-known refrigeration cycle are installed on the back wall of the refrigerator. The constituting cooler 10 is provided.

A fan casing 1 is fixed above the cooler 10,
An electric motor 12 with a fan 11 attached thereto is fixed opposite to the fan hole 3.

The front of the cooler 10 and the fan casing 1 is a partition plate 13
A cold air passage 14 is formed which is covered with a refrigerator and separated from the inside of the refrigerator.
Openings 15 and 15' are bored in the upper part of the partition plate 13, and the lower edge is connected to the suction port 16 while keeping a gap with the bottom wall of the refrigerator.
is formed.

Reference numeral 17 denotes a portion requiring rapid cooling, which is formed on the left side of the upper part of the refrigerator, and the opening 15 faces this portion 17 requiring rapid cooling.

This portion 17 that requires rapid cooling is formed by bending an aluminum plate or the like into an L-shape and fixing it above the inside of the refrigerator to form a chamber separated from the inside of the refrigerator. Press the button to make ice.

A sealing member 20 seals the upper side of the front wall 1D of the fan casing 1 and the sides of the left and right side walls IA and IB of the fan casing 1, and comes into contact with the back side of the partition plate 13 to prevent air from passing by.

As the electric compressor 9 operates, the cooler 10 is cooled down.

By operating the electric motor 12, the fan 11 becomes the cooler 1.
The air that has undergone heat exchange with the cold air passageway 14 is sent to the upper part of the cold air passage 14, and is discharged into the refrigerator from the opening 15.15'.

The ice tray 19 is cooled by the low temperature air discharged from the opening 15, the room is cooled by the air discharged into the refrigerator from the opening 15', and the warm air returns to the cooler 10 from the suction port 16, repeating the circulation. .

Now, if the fan hole 3 of the fan casing 1 is eccentric to the left, the air volume will increase relative to the opening 15, and a large amount of air with a high wind speed will be sent to the area 17 that requires rapid cooling, allowing ice to be made quickly. becomes.

5 and 6 are diagrams showing a well-known double door refrigerator, and the same reference numerals as above indicate the same items.

The inner box 7 has a freezer compartment part 7a, a refrigerator compartment part 7b, and a partition wall IC.
The interior of the heat insulating box 5 is divided into a freezer compartment 21 on the left and a refrigerator compartment 22 on the right by a partition wall 7C.

An electric motor 12 to which a cooler 10, a fan casing 1, and a fan 11 are attached is fixed to the rear wall of the freezer compartment 21.
A partition plate 13 covers the front of the partition plate 13 to form a cold air passage 14.

A step 13A is provided in the middle of the partition plate 13 so as to come into contact with the surface of the front wall 1D of the fan casing 1.

Reference numeral 24 denotes a cold air intake port 2 bored in the back wall of the freezer compartment portion 7b.
5 and a cold air outlet 26 protruding from the back wall of the refrigerator compartment portion 7b.
These ducts form an inlet passage 23 that introduces the air rising in the cold air passage 14 into the refrigerator compartment 22.

27 is provided in the partition wall 7c and connects the refrigerator compartment 22 and the cold air passage 14.
This is an outlet passageway that communicates with the air cooler 10 and returns the air inside the refrigerator compartment to the cooler 10.

The fan hole 3 of the fan casing 1 is eccentric to the right.
Therefore, a large amount of air is sent to the inlet passage 23.

Since the door of the ordinary refrigerator compartment 22 is frequently opened, conventionally a distribution plate is provided in the cold air passage 14 so that a sufficient amount of low-temperature air can be sent. This eliminates the need for a distribution plate.

As described above, the present invention forms a fan casing by the left and right side walls, an arcuate lower wall, and a front wall having a fan hole, and the fan casing is attached to the wall surface, and the fan casing is disposed below the fan casing toward the upper opening of the fan casing. In a cooling device in which a fan is disposed opposite a fan hole to discharge air that has exchanged heat with a cooler, the center of the fan hole is offset from the center line of the left and right side walls of the fan casing. It is.

Therefore, since the air volume increases, a fan with a small diameter may be used, and the electric motor may be replaced with one with a small torque.

Also, since the air flow distribution increases in the eccentric direction, accessories such as a distribution plate are required for applications where the air space above the fan casing is divided into areas that require a large amount of air and areas that require a small amount of air. Since the cooling device can be sufficiently distributed without the need for additional cooling, it becomes an inexpensive cooling device with a reduced number of parts.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a fan casing used in the device of the present invention, Fig. 2 is a front view of the fan casing and a wind speed distribution diagram, Fig. 3 is a front view of a freezer equipped with the device of the present invention, and Fig. 4 is a front view of the fan casing used in the device of the present invention.
The figures are a schematic longitudinal side view taken along line A-A' in FIG. 3, FIG. 5 is a front view of the same side-by-side refrigerator-freezer, and FIG. 6 is a schematic longitudinal side view taken along line B-B' in FIG. 1...Fan casing, IA, IB...Side wall, 1
C...Circular lower wall, 1D...Front wall, 3...Fan hole, 4...Upper opening, 5...Insulating box body, 10...
Cooler, 11... Fan, 12... Electric motor, 13.
... Partition plate, 14... Cold air passage, 15.15... Opening, 17... Area requiring rapid cooling, 21... Freezer compartment, 22
... Refrigerator room, 23... Inlet passage, 27... Outlet passage, l... Center line, P... Center of fan hole.

Claims (1)

[Claims] 1. A cooler is disposed on the back wall of the inside of the insulating box, and a propeller fan and a fan casing are disposed above the cooler, and the fan casing has left and right side walls, an arc-shaped lower wall, and a fan hole. The fan is disposed opposite to the fan hole so as to suck air that has exchanged heat with the cooler through the fan hole and discharges it toward the upper opening, and The front surface is covered with a partition plate to form a cold air passage separated from the storage space in front of the partition plate, and the air discharged from the fan casing is supplied to the upper part of the storage space from an opening provided in the partition plate. In the cooling device, the center of the fan hole of the fan casing is located on the left side of the fan casing. A cooling device characterized in that the cooling device is eccentrically located toward the portion requiring rapid cooling from the center line of the right side wall. 2 The interior of the insulated box is divided by a partition wall to form a freezing room on one side and a refrigerator room on the other side, and a cooler is placed on the back of the freezer compartment, and a propeller fan and fan casing are placed above the cooler. The fan casing sucks air that has exchanged heat with the cooler from the left and right side walls, an arcuate lower wall, and a front wall having a fan hole through the fan hole and discharges it toward the upper opening. The fan is arranged opposite to the fan hole, and the front surfaces of the cooler and the fan casing are covered with a partition plate to form a cold air passage separated from the inside of the freezer compartment, and the cold air is discharged from the fan casing. In the cooling device provided with an inlet passage for introducing rising air into the refrigerating compartment, the center of the fan hole of the fan casing is eccentric toward the refrigerating compartment by a center line 1 of the left and right side walls of the fan casing. Cooling device.