JPH05296643A - Cooling device - Google Patents

Abstract

PURPOSE:To improve the freezing capacity, relating to a cooling device for a refrigerator-freezer or the like, without enlarging the volume of the device by placing two units of heat exchangers in opposition to each other in a V-shaped spatial arrangement and a fan at an intermediate point between and above the two heat exchangers. CONSTITUTION:Two units of heat exchangers 2A, 2B are placed in opposition to each other along the front panel 1 and in a V-shaped spatial arrangement. When fans 3A, 3B placed above them are actuated, air taken in through air inlets 4A, 4B formed in the front panel 1 undergoes heat exchange, one flow from 4A at a heat exchanger 2A and the other flow from 4B at a heat exchanger 2B, and is sent upward as cooling air. Under the heat exchangers 2A, 2B a drain pan 5 extending to the boundary part between the air inlets 4A, 4B is provided and from the drain pan 5 upward a guiding screen 7 by which the cooling air from the heat exchanger 2A is kept from mixing with the cooling air from the heat exchanger 2B is erected. Each of the heat exchangers 2A, 2B and the drain pan 5 are equipped with a defrosting heater 8, the first two specifically at the lower half of the respective device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating unit of a normal type, a cooling unit used in a quick freezing chamber, a cold air drying chamber and the like.

[0002]

2. Description of the Related Art As an apparatus of this type, FIGS.
In general, the air is taken in from one direction, heat is exchanged by a heat exchanger 2 installed perpendicularly to the air flow, and the cooled or heated air is blown out of the unit by a blower 3 as shown in FIG. Target. In this type of cooling unit, it is necessary to make the heat exchanger 2 large in order to enhance the refrigerating capacity, and therefore the unit becomes large and the passage speed of the air exchanged in the heat exchanger 2 is remarkably slowed down. There is a problem.

Further, when the cooling unit is enlarged, the defrost time becomes longer and the capacity of the defrost heater (not shown) needs to be increased, which adversely affects the storage performance in a refrigerating freezer or the like.

On the other hand, as a small cooling unit having a large refrigerating capacity, it is well known that two heat exchangers 2 are installed to face each other in a V shape as shown in FIG. 6, and this type has a large volume. It is possible to double the refrigeration capacity without increasing it.

However, this cooling unit has an air intake 4
Since it was installed at the front and rear or left and right, there were restrictions when installing, and although the cooling unit itself could be downsized,
From the viewpoint of effective use of space, it is not satisfactory.

A cooling unit of the cooling coil type shown in FIG. 7 having such a structure is already known, but this case also has the same problem.

Further, in Japanese Unexamined Patent Publication No. 61-128074, an outdoor unit in which two heat exchangers 2 are installed to face each other in a V shape as shown in FIG. 8 and an air inlet 4 is provided on one side. However, more air is supplied to the heat exchanger 2 closer to the air intake 4, and less air is supplied to the heat exchanger 2 farther from the air intake 4 in this unit. Therefore, there is a problem in that even if two heat exchangers 2 are installed, their respective capacities cannot be sufficiently exhibited.

[0008]

As described above, in the conventional cooling unit, the volume increases proportionally as the refrigerating capacity increases, and the heat exchanger faces the V type in order to prevent the increase in volume. When installed, there is a problem that the installation of the unit is subject to restrictions, or the capabilities of the plurality of heat exchangers installed at an angle cannot be fully exhibited, and the solution to these problems has been a problem.

[0009]

As a concrete means for solving the above-mentioned problems of the prior art, the present invention has two heat exchangers of V type along a front panel having air inlets at two upper and lower positions. The air intake side of the front panel side heat exchanger is connected to the upper air intake port, and the air intake side of the remaining heat exchanger is connected to the lower air intake port. A cooling unit characterized in that a blower is installed above the middle part of the vessel,

An upper wall portion of an air passage communicating with the air suction side of the remaining heat exchanger from the lower air intake is formed by a drain pan installed under each heat exchanger. The cooling unit;

According to another aspect of the present invention, there is provided any one of the above cooling units, characterized in that a defrost heater is installed below the air suction side surface of each heat exchanger.

[0012]

[Operation] When the blower is driven, the air sucked into the cooling unit from the air intake side on the upper side of the front panel is guided to the heat exchanger near the front panel and exchanges heat, and The air sucked into the cooling unit from the air suction side is guided to a heat exchanger in the back away from the front panel to be heat-exchanged, becomes air of a predetermined temperature, and is blown upward from the cooling unit.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling unit 100 according to the present invention illustrated in FIGS. 1 to 3 has built-in heat exchangers 2A and 2B facing each other in a V shape along a front panel 1, and two units installed at the upper part When the blowers 3A, 3B are driven, air is respectively sucked from the air intakes 4A, 4B provided in the front panel 1 and guided to the heat exchangers 2A, 2B to be heat-exchanged. The air of a predetermined temperature is blown out to.

A drain pan 5 provided below the heat exchangers 2A and 2B is extended to the boundary between the air intakes 4A and 4B, and the upper air intake 4A is near the front panel 1 for heat exchange. The air intake side 2A1 of the device 2A is communicated with, and the lower air intake 4B is communicated with the air intake side 2B1 of the heat exchanger 2B located farther from the front panel 1.

The lower air intake 4B is connected to the rear heat exchanger 2B.
In this case, in the ventilation path 6 communicating with the air suction side 2B1, the upper wall portion is formed by the drain pan 5, and the lower wall portion is formed by the lower surface panel 11.

Further, the partition plate 7 is placed on the drain pan 5, the air sucked from the upper air intake 4A is guided to the front heat exchanger 2A to exchange heat, and then is blown to the outside of the cooling unit 100 by the blower 3A. The air blown out and sucked in from the lower air intake 4B is the heat exchanger 2B in the back.
It is erected so as to be blown out of the cooling unit 100 by the blower 3B after being guided to and heat-exchanged.

Further, when the air intake side 2A1 of the heat exchanger 2A is hung from the middle stage to the lower end, the air intake side 2 of the heat exchanger 2B.
A defrost heater 8 that can be switched on and off is provided on the lower surface of the drain pan 5 when it is hung from the middle stage to the lower end of A1 so that the frost that has adhered can be appropriately removed.

Further, from the upper air intake 4A and the lower air intake 4B, to the upper air intake 4A having a large opening, a substantially equal amount of air can be taken into the unit. A plurality of straightening vanes 41 are installed. The rectifying plate 41 has a variable mounting angle and is provided so that the size of the opening can be freely adjusted (a fixed type can also be used).

Further, the partition plate 7A has the heat exchanger 2A on the front side.
And the front panel 1 are connected and divided into upper and lower parts, and only the air sucked from the upper air intake port 4A is guided to the front heat exchanger 2A, and the heat is exchanged from the cooling unit 100 by the blower 3A. It is supposed to be blown out.

Similarly, the partition plate 7B has the heat exchanger 2B in the back.
And the rear panel 12 on the cooler body side are connected to each other to be divided into upper and lower parts, and only the air sucked from the lower air intake port 4B is guided to the heat exchanger 2B in the back and is heat-exchanged by the blower 3B. It is designed to be blown out from the cooling unit 100.

Therefore, when the blowers 3A and 3B are driven so as to blow out the air from the cooling unit 100, only the air sucked from the upper air intake 4A is guided to the heat exchanger 2A near the front panel 1. The heat is smoothly and efficiently exchanged by being blown, and the air sucked from the lower air intake 4B is also guided to the heat exchanger 2B in the back away from the front panel 1 to be smoothly and efficiently heat-exchanged. And the temperature of the cooling unit 100 is blown out.

When the refrigeration load is small, the heat exchanger 2
Only one of A and 2B (usually the front heat exchanger 2A close to the front panel 1) is driven.

This is because the heat exchanger 2 is used when the refrigeration load is small.
This is because if A and 2B are driven at the same time, they are repeatedly turned on and off, which not only causes large fluctuations in temperature, but is also undesirable from the viewpoint of energy efficiency.

According to the above embodiment, the two heat exchangers 2
Since A and 2B are installed opposite to each other in V shape, the refrigerating capacity can be greatly increased without significantly increasing the unit volume, and the air can be sent to the heat exchanger 2B through the lower ventilation passage 6. Since the air flows through the heat exchangers 2A and 2B almost uniformly, the heat exchange efficiency is significantly improved.

Further, since the air intakes 4A and 4B are formed only on the front panel 1, as shown in FIG. 2, there is no restriction when installing the rear panel 12 along the wall surface, and the refrigeration unit 100 is not restricted. Can be installed to save space.

Further, the present invention is not limited to the above-mentioned embodiment, so that appropriate modifications can be made. For example, it is possible to repeatedly install two or more heat exchangers 2A and 2B, which are installed to face each other in a V shape, along the front panel 1. In this case, the partition plate 7 and the blowers 3A and 3B are also repeatedly installed.

[0027]

As described above, in the cooling unit of the present invention, the two heat exchangers are installed so as to face each other in a V-shape, so that the refrigerating capacity can be doubled without increasing the unit volume so much. In addition, since the air intake to the unit is provided only on the front panel, there are no restrictions when installing and it is possible to save space.

Further, since the size of the heat exchanger is the same as that of the conventional small cooling unit, the flow velocity of air at the time of heat exchange in the heat exchanger is not particularly different from that of the conventional small capacity cooling unit. Since the heat exchanger is arranged in the V shape, the drain water at the time of defrosting is drained well, and there are features such as less frost residue, which is a remarkable effect as a cooling unit for various applications. .

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment.

FIG. 2 is an explanatory cross-sectional view of one embodiment.

FIG. 3 is an explanatory plan view of the embodiment.

FIG. 4 is an explanatory diagram of a conventional example.

FIG. 5 is an explanatory diagram of a conventional example.

FIG. 6 is an explanatory diagram of a conventional example.

FIG. 7 is an explanatory diagram of a conventional example.

FIG. 8 is an explanatory diagram of a conventional example.

[Explanation of symbols]

 1 Front Panel 11 Lower Panel 12 Rear Panel 2, 2A, 2B Heat Exchanger 3, 3A, 3B Blower 4, 4A, 4B Air Suction Side 5 Drain Pan 6 Ventilation Path 7, 7A, 7B Partition Plate 8 Heater 100 Cooling Unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Ichinotsuka, 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Shoji Kubota 2-18, Keihan Hondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. Two V-shaped heat exchangers are installed facing each other along a front panel having air intakes at two upper and lower positions, and the upper air intake is on the air intake side of the front panel side heat exchanger. And the lower air intake port is connected to the air suction side of the remaining heat exchanger, and a blower is installed above the middle portion of both heat exchangers. 2. An upper wall portion of an air passage communicating with the air intake side of the remaining heat exchanger from the lower air intake port is formed by a drain pan installed under each heat exchanger. The cooling unit according to claim 1. 3. The cooling unit according to claim 1, wherein a defrost heater is installed below the air suction side surface of each heat exchanger.