JP2001165581A - Flowing air cooling device for air heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the elongation of a life while avoiding the deterioration of an efficiency, which is accompanied by the temperature rise of outdoor air. SOLUTION: In a flowing air cooling device for an air heat exchanger, equipped with a fan for moving air to flow and a heat exchanging coil 7, in which heat transferring fluid is conducted to flow through the inside of the same so as to be contacted with the flowing air by the fan, a humidifying element 10, constituted of a water absorbing fabric reticulated body, a porous body or the like, is provided in the upstream side of flowing direction of air for the heat exchanging coil 7 while the humidifying element 10 is provided with a water supplementing feed water pipe 11 and a trough 12 for damming downfall water and draining the same to bear moisture in an humidifying element 10 and evaporate the moisture naturally by the contact between the moisture and flowing air and cool the flowing air utilizing the latent heat of the evaporation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a moving air for an air heat exchanger comprising a fan for flowing air, and a heat exchange coil for flowing a heat transfer fluid inside and contacting the flowing air by the fan. It relates to a cooling device.

[0002]

2. Description of the Related Art An air heat exchanger has a problem in that the efficiency is reduced when the temperature of the outside air becomes higher than 30 ° C., for example, 35 ° C. in the daytime in summer.
For example, when an ice maker is connected as a heat exchanger on the refrigerant evaporation side, the ice making efficiency is reduced by 13%.

Conventionally, as a configuration for solving this problem, there is a configuration as shown in a front view of FIG. A heat exchange coil 02 and a fan 03 are provided around the housing 01, and the fan 03 sucks outside air through the heat exchange coil 02 and exchanges air heat so as to condense a refrigerant or the like flowing in the heat exchange coil 02. The device 04 is constituted.

A spray 05 for spraying water to the heat exchange coil 02 is provided on the upper side, and a gutter 06 for receiving the sprayed water is provided on the lower side on the upstream side in the intake direction of the heat exchange coil 02. Then, the outside air drawn into the heat exchange coil 02 is cooled by utilizing the latent heat of evaporation accompanying the spraying of water.

[0005]

However, due to the water sprayed, the fins attached to the heat exchange coil 02 are corroded at an early stage, and the life of the air heat exchanger 04 is reduced. . Further, even the heat exchange coil 02 having no fins has a disadvantage that the initial cost is increased because a corrosion-resistant tube material whose outer surface is plated with nickel, zinc or chrome is used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to extend the life of a battery while avoiding a decrease in efficiency due to a rise in the temperature of outside air.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a fan for flowing air and a heat exchange fluid for flowing a heat transfer fluid inside and contacting the flowing air by the fan. In the flowing air cooling device of the air heat exchanger including the coil, the air-permeable air-absorbing body that carries moisture so that it naturally evaporates by contact with the flowing air, on the upstream side in the flowing direction of the flowing air of the heat exchange coil. Provide.

[0008]

According to the structure of the flowing air cooling device of the air heat exchanger of the present invention, the moisture carried on the air permeable absorbent is naturally evaporated by contacting the air flowing through the heat exchange coil with the latent heat of evaporation. Then, the air flowing through the heat exchange coil is cooled.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an overall schematic diagram showing a modular air-cooled ice making machine using a flowing air cooling device of an air heat exchanger according to a first embodiment of the present invention, which is connected to a compressor 1 and mutually. Three air heat exchangers 2, an expansion valve 3, and an ice machine 4
Are connected to form a modular air-cooled ice maker.

The air heat exchanger 2 has a fan 6 mounted on the upper surface of the housing 5 and a pair of heat exchange coils 7 provided in an inverted C shape below the fan 6. A portion between both heat exchange coils 7 is closed by a plate 8 at each of both sides orthogonal to the connecting direction of the air heat exchangers 2, and a permeable water absorbing body 9 is provided at the other portion.

As shown in the enlarged perspective view of the main part of FIG. 2 and the enlarged front view of the main part of FIG. 3, the air-permeable water-absorbing body 9 is constituted by a net made of a water-absorbing fiber or a porous body. A humidifying element 10, a water supply pipe 11 for replenishing the humidifying element 10 with water by a pump P, and a gutter 12 for receiving and discharging the water flowing down, so as to be naturally evaporated by contact with flowing air. Humidifying element 1
It is configured so that water can be carried on the substrate.

With the above configuration, as the air sucked by the fan 6 and flowing toward the heat exchange coil 7 comes into contact with the water carried on the humidifying element 10, the water naturally evaporates. Cools the flowing air.

As a result, even if the temperature of the outside air exceeds 30 ° C., for example, 35 ° C., during the daytime in summer, the temperature of the air flowing through the heat exchange coil 7 is reduced. Of the ice making machine 4 can be prevented from decreasing due to the rise in the ice making efficiency.

When the flowing air is cooled as described above, for example, when the temperature of the outside air is 35 ° C., the temperature of the air flowing through the heat exchange coil 7 can be lowered to about 30 ° C., which is about 5 ° C. lower. In addition, the power consumption can be improved by 5%, the power consumption can be reduced by 8%, and the ice making efficiency can be improved by 13% as a whole.

Further, for example, when making ice for storing ice heat at night, if the flowing air is cooled in a tropical night where the outside air temperature exceeds 30 ° C., the ice making efficiency can be similarly improved by 13% and the running cost can be effectively reduced. Can be reduced.

FIG. 4 is an enlarged front view of a main part of the second embodiment. The differences from the first embodiment are as follows. That is, the humidifying element 10 is provided on the upstream side in the air flow direction of each of the pair of heat exchange coils 7 so as to face each other with a predetermined separation. Other configurations are the first
This is the same as the embodiment, and the description is omitted by attaching the same figure number.

FIG. 5A is a cross-sectional view showing a modified example, in which one fan 6 is provided in a housing 5 and one heat exchange coil 7 is provided on an intake side thereof, so that air of an intake type is provided. A heat exchanger is provided, and a humidifying element 10 is provided on the upstream side of the heat exchange coil 7 in the direction of air flow in a state where the humidifying element 10 is opposed to the heat exchange coil 7 with a predetermined space therebetween to form a flowing air cooling device.

FIG. 5B is a cross-sectional view showing another modified example, in which one fan 6 is provided in the housing 5 and one heat exchange coil 7 is provided on the blow-out side thereof and pushed in. A humidifying element 10 is provided between the fan 6 and the heat exchange coil 7 in a state where the humidification element 10 faces the upstream side in the air flow direction of the heat exchange coil 7 with a predetermined separation therebetween. Are provided to constitute a flowing air cooling device.

In the above embodiment, the moving air cooling device of the air heat exchanger applied to the modular type air-cooled ice maker has been described. It can be applied to various types of air heat exchangers such as a flowing air cooling device for an outdoor air heat exchanger.

As the humidifying element 10 of the present invention, a strip of narrow width is formed from a water-absorbing fibrous net or a porous body, and the strip is formed with a small interval. It may be provided so as to be arranged at a distance,
Various modifications are possible.

In the above embodiment, the humidifying element 1
0 is disposed at a position deviated from above the heat exchange coil 7 in the vertical direction so that water can be prevented from splashing directly on the heat exchange coil 7, but is supported by the humidifying element 10 as moisture. However, by adjusting the amount of water so that the water separates from the humidifying element 10 only by spontaneous evaporation, the water can be prevented from dropping as water droplets. In such a configuration, the humidifying element 10 is heated. It may be provided vertically above the replacement coil 7.

[0023]

As described above, according to the flowing air cooling device of the air heat exchanger of the present invention, the moisture carried on the air-permeable water absorber is naturally evaporated, and the air flowing through the heat exchange coil is cooled. It cools and does not bring water into contact with the heat exchange coil as in the past, so it is possible to avoid using expensive corrosion-resistant tubing as the heat exchange coil and to prevent the fins from corroding at an early stage. The service life can be extended while avoiding a decrease in efficiency.

[Brief description of the drawings]

FIG. 1 is an overall schematic configuration diagram showing a modular air-cooled ice maker using a flowing air cooling device of an air heat exchanger according to a first embodiment of the present invention.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is an enlarged front view of a main part.

FIG. 4 is an enlarged front view of a main part of the second embodiment.

FIG. 5 is a sectional view of a modification.

FIG. 6 is a front view of a conventional example.

[Explanation of symbols]

 2 ... Air heat exchanger 6 ... Fan 7 ... Coil for heat exchange 9 ... Breathable water absorber

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yuji Yoshitake 4-1-1, Honmachi, Chuo-ku, Osaka-shi F-term in Takenaka Corporation Osaka Main Store (Reference) 3L103 AA12 AA27 AA35 AA37 BB42 BB44 CC22 CC28 CC30 DD22 DD67 DD99

Claims (1)

[Claims] 1. A flowing air cooling device for an air heat exchanger, comprising: a fan for flowing air; and a heat exchange coil for flowing a heat transfer fluid inside and contacting the flowing air by the fan, A flowable air cooling system for an air heat exchanger, comprising a gas-permeable air-absorbing body provided with moisture so as to evaporate spontaneously by contact with the flowing air on the upstream side in the flowing direction of the flowing air of the heat exchange coil. apparatus.