JPS6294747A - Cooling apparatus - Google Patents

Abstract

PURPOSE:To conserve the motive force and the like of a freezing apparatus by sectioning the room into a lower space having a predetermined height required to be cooled and an upper space located upwardly of the lower space by means of an air curtain, and providing a cooler for circulating a cool air flow to the lower space. CONSTITUTION:By operating a fan 4 for an air curtain, the inside of a room 1 is sectioned into a lower space 2 and an upper space 3 by an air curtain 5, and then a freezing unit 6 and a cooling fan 8 are operated to circulate a cool air flow. In a wide and large space, only the lower space 2 where persons are present, is cooled, and thus an atmosphere of a temperature comfortable for one's body is obtained. Further, since the lower space 2 is of a fan smaller in capacity as compared with an upper space 3, it is possible to circulate a cool air flow by unrequiring a specifically large freezing power even within a wide and large room 1. The lower space where indoor cooling is required is cooled by a cooler, and the upper space partitioned by the air curtain is not cooled, and hence only a small cooling force is sufficient enough.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling device, and relates to indoor cooling. This is rarely done due to the freezing capacity of refrigerators and economic problems. In addition, when the coils and insulating oil of a transformer installed in a substation room rise, problems such as poor insulation occur. There is also a risk that malfunctions may occur as moisture in the air condenses as the air cools. Furthermore, since cooling is required only in the vicinity of the transformer at the bottom of the substation room, cooling the entire substation room would be a waste of refrigeration power.

[Problem that the invention seeks to solve]

In view of the above-mentioned problems, the present invention makes it possible to cool the space close to the floor where people are located in the vast auditorium, and also cools the transformer in the substation room to prevent temperature rise and transform the transformer. This is to prevent condensation from condensing on the opening/closing devices of the container, and to reduce the need for refrigeration.

[Failure to solve the problem]

The present invention divides a room into a lower space at a predetermined height that requires cooling and an upper space above using an air curtain, and provides a cooler that circulates cold air in the lower space to create a lower space at a predetermined height. For example, in a large auditorium or other room, by separating the lower part near the floor where people are located from the vast upper space with an air curtain in the horizontal plane, it is possible to circulate cold air using the cooler in the lower space. In addition, for example, the lower space in the substation room is cooled to cool the transformer housed in the lower space to prevent temperature rise, and the switchgear installed in the upper space partitioned with an air curtain is prevented from being cooled to prevent condensation. This is intended to prevent malfunctions of switches and other devices and to save refrigeration power.

[Effect]

The lower space in the room that needs to be cooled is cooled by the cooler, and the upper space partitioned off by the air curtain is not cooled, so less cooling power is required.

〔Example〕

Example 1 Explanation regarding FIG. 1 follows.

Room 1 is a large space with buildings such as an auditorium and gymnasium on the right.
An air curtain 5 formed by blowing air horizontally from a curtain fan 4 divides a lower space 2 at a height on the floor where people are located and a vast upper space 3 above. A cooler 7 consisting of an evaporator of a refrigeration device 6 provided outside the room 1 is provided, and a cold air fan 8 is provided on one side of the cooler 7.

Next, the operation of this first embodiment will be explained.

The curtain fan 4 is operated to divide the interior of the room 1 into a lower space 2 and an upper space 3 by the air curtain 5, and then the refrigeration device 6 and the cold air fan 8 are operated to circulate cold air in the lower space 2 to expand the space. In this space, only the lower space 2 where the person is located is cooled, and an atmosphere with a temperature comfortable for the human body is obtained. Furthermore, since the lower space 2 has a much smaller capacity than the upper space 3, cold air can be circulated even in the vast room 1 without the need to increase the refrigerating power.

Furthermore, as shown in Fig. 2, the lower space 2 is connected to the curtain fan 4.
It is also possible to incorporate a cooling '57 for cooling the air curtain 5 and the lower space 2.

Example 2 FIG. 3 will be explained.

Room 1 is a substation room, and a transformer 9 is housed on the floor. A position slightly above the height of the transformer 9 is partitioned by the air curtain 5 to form a lower space 2 and an upper space 3. Further upper space 3
A switch 10 connected to the transformer 9 and an oil-filled switch 1 sequentially connected to the power supply side of the switch 10 are installed near the ceiling.
1. An automatic switch 12 is provided. Also, transformer 9
is provided with a temperature sensor 13 for detecting oil temperature, and in response to a signal from this temperature sensor 13, a controller 14 operates a transformer fan 15 provided close to the transformer 9, a refrigeration device 6° cold air fan 8, etc. is designed to be controlled. The other configurations are the same as in the first embodiment.

Next, the operation of this second embodiment will be explained.

When cold air is circulated in the lower space 2 in the substation room 1 in the same manner as in the first embodiment, the cool air is concentrated on the transformer 9 by the transformer fan 15 and the transformer 2! i9 is cooled, and damage to the coil and insulating oil due to the rise in temperature of transformer 9 is prevented. Furthermore, since the upper space 3 is not cooled, there is no risk of condensation forming on the switches 10, 12, etc.

Further, the temperature of the transformer 9 is detected by the temperature detector 13, and the signal is sent to the frozen bag V! via the controller 14. 16,
Fans 8.15 are automatically controlled to maintain an appropriate temperature at all times.

Other operations are the same as in Example 1.

Example 3 FIG. 4 will be explained.

A plurality of transformers 9 are provided in the lower space 2, and each transformer 9
A cooler 7 with a fan 8 is provided facing the air conditioner. Then, an upper space 3 partitioned by an air curtain 5 in the substation room 1
There is a switch 1 connected to each switch 9 near the ceiling.
0 is connected to the power supply side via an oil-filled switch 11 and an automatic switch 12. The plurality of coolers 7 are each composed of a plurality of evaporators to which refrigerant is distributed from a refrigeration device 6 provided outside the transformer T5 room 1.

Next, the operation of this third embodiment will be explained.

In the lower space 2 of the substation room 1 partitioned by the air curtain 5, a plurality of transformers 9 are cooled by coolers 7 with fans 8 provided respectively to prevent temperature rise. Further, since the cooling pin 7 with fan 8 is provided in each transformer 9, temperature adjustment of each transformer 9 is possible. Further, the upper space 3 partitioned by the air curtain 5 is not cooled, and no dew condensation occurs on the switches 10 and 12 provided near the ceiling.

〔Effect of the invention〕

According to the present invention, the interior of the room is horizontally divided into a lower space at a predetermined height that requires cooling and an upper space above by an air curtain, and a cooler is provided to circulate cold air in the lower space. For example, in a large auditorium, gymnasium, etc., a comfortable atmosphere can be created by circulating cool air only in the lower space near the floor where people are located. In addition, in substation rooms, etc., it is possible to cool the space below where the transformer is housed to prevent the temperature of the transformer coil and insulating oil from rising, and to withstand overload capacity relative to the transformer capacity. It is possible to prevent condensation from forming on the switchgear installed in the upper space of the substation room due to cooling.Furthermore, since it does not cool the entire substation room but only the lower space partitioned off by the air curtain, the cooling power is low. It is possible to save power and other costs for the refrigeration device for the corner cooler.

[Brief explanation of drawings]

FIG. 1 is a flow sheet showing one embodiment of the present invention, and FIGS. 2 to 4 are flow sheets showing other embodiments of the same. 1. Room, 2. Lower space, 3. Upper space, 5. Air curtain, 7. Cooler.

Claims (4)

[Claims] (1) A room is divided horizontally into a lower space at a predetermined height that requires cooling and an upper space above by an air curtain, and a cooler is provided for circulating cold air in the lower space. cooling device. (2) The cooling device according to claim 1, wherein the room is a substation room, and the lower space accommodates a transformer. (3) The cooling device according to claim 2, wherein the cooler is controlled by a temperature sensor of a transformer. (4) The cooling device according to claim 2, wherein a cooler is provided for each transformer.