JPS5940676B2 - Fishing boat cooling device for small fishing boats - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fishing boat cooling device for a small fishing boat, and particularly to a structure of a suitable cooler for cooling the inside of a fishing boat.

The reality is that live fish is traded at a price 1.5 to 3 times higher than fresh fish in the general market.

Therefore, it is desirable for fishermen to bring the fish they catch to land as alive as possible, that is, in the state of live fish.

Currently, small fishing boats (approximately 15 tons or less) are equipped with fishing boats that house live fish in order to bring them ashore.

The size of this fishing boat is about 1 m long, 1.3 m wide, and 1 m high, and the fishing boat is especially cooled to keep the freshness of the fish it catches.

Conventionally, ice has been used as this cooling means.

In other words, when going fishing, a considerable amount of ice must be loaded (about 9 in 30 for a 5-ton fishing boat in summer), and the ice must be broken into pieces of appropriate size and loaded onto the fishing boat.

In particular, small fishing boats often have at most three crew members, and sometimes only one crew member.

Therefore, there are many problems in keeping this ice from melting, loading it on ships, and breaking it up and putting it on fishing boats.

Furthermore, there are significant losses due to the use of ice in terms of changes in seawater concentration, temperature distribution, and space inside the fishing boat.

A fishing boat cooling system for small fishing boats has been proposed to solve the above-mentioned drawbacks.

FIG. 1 is a schematic diagram showing such a cooling system. Inside the fishing boat 1, a cooling pipe 2 of an evaporator of the cooling system is arranged on the side, a compressor 4 is installed in the engine room 3, and a wheelhouse 5 is located inside the fishing boat 1. A liquid receiver 6 and a condenser 7 are arranged on the roof 5A.

FIG. 2 shows the inside of the fishing boat 1 in more detail. The cooling pipe 2 of the evaporator is formed of a steel pipe with good heat transfer, and this cooling pipe is arranged in a meandering manner along the side wall 1A of the fishing boat 1. ing.

The compressor 4 is driven by a ship's engine, which is not shown in the diagram.
The condenser 7, liquid receiver 6, and evaporator 2 are operated in the same manner as the existing refrigeration system.

A heat insulating material (not shown in the figure) is placed around the outer circumference of the fishing boat 1 to prevent heat from penetrating.

Further, seawater is contained in the fishing boat 1, and the evaporator 2 cools this seawater.

However, such a cooling device has the following drawbacks.

That is, the metal tubes that make up the cooling tubes undergo a chemical reaction with seawater, which causes the metal tubes to break.

In particular, if the metal pipe is made of steel, copper dissolved in seawater will have a negative ecological impact on live fish on a fishing boat.

SUMMARY OF THE INVENTION The object of the present invention is to provide a fishing boat cooling system for small fishing boats that does not have the drawbacks of the prior art as described above.

A feature of the present invention is that, in a fishing boat cooling device for a small fishing boat, which is composed of a compressor, a condenser, a liquid receiver, and an evaporator disposed inside a fishing boat, a protective This is due to the fact that it is coated with

FIG. 3 is a diagram showing a cross section of the cooling pipe of the evaporator according to the present invention, in which nickel plating N1 is applied to the outer peripheral surface of two steel pipes,
Furthermore, the outer circumferential surface is coated with a coating T to prevent salt damage.

By applying the nickel plating N1 and the coating T for preventing salt damage on the outer circumferential surface of the steel pipe in this manner, the steel pipe can be more safely protected even if the nickel plating is defective.

In addition, the interior of the fishing boat is painted in different colors to mark the amount of seawater that is being filled.

Therefore, it is preferable that the coating applied to the nickel plating described above be similar to the color of the coating inside the fishing boat.

Further, the structure of the cooling pipe 2 may be one in which two plates are pasted together as shown in FIG. 4 and a passage 9 is formed between them.

In this case, it is important to press these two plates together under high pressure so that the refrigerant passing through the passage 9 does not leak out.

In the above embodiment, the outer peripheral surface of the cooling pipe of the evaporator made of steel pipe is coated with nickel plating N1 and coating T for preventing salt damage, but the material of the cooling pipe may be made of a material with good thermal conductivity other than copper. The same effect can also be obtained by applying both nickel plating and salt damage prevention coating to the outer circumferential surface, or by applying only one of them.

However, steel pipes have the advantage that piping is relatively easy.

The fishing boat cooling device for small fishing boats according to the present invention has the following effects.

1. A protective coating is applied to the surface of the metal tubes that make up the cooling tubes, so the metal tubes do not come into direct contact with seawater, and chemical reactions with salt do not cause damage to the tubes.

2. The cooling pipe is made of low-cost steel pipe with good workability, and its surface is plated with nickel, which is compatible with copper, so it is low cost as a heat exchanger, and the patina does not enter the human body through fish. There is no longer any fear of entering.

3. Furthermore, since the nickel plating is coated with 1L paint for salt damage, even if the plating peels off or there are areas where the plating does not stick, the effects of items 1 and 2 above will not be lost.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a fishing boat cooling system arranged in a small fishing boat, Fig. 2 is a perspective view of the interior of the fishing boat, Fig. 3 is a cross-sectional view of the cooling pipe of the evaporator of the cooling system according to the present invention, and Fig. 4 is Another example of the cooling pipe is shown. 1...Fishing boat, 2...Evaporator cooling pipe,
2A...Copper tube, N1...Nickel plating, T...Painting to prevent salt damage.

Claims (1)

[Scope of Claims] 1. A cooling device that cools a fishing boat installed inside a fishing boat and includes a compressor, a condenser, a liquid receiver, and an evaporator that is placed inside the fishing boat. A fishing boat cooling device for a small fishing boat, which is patented in that a protective coating is applied to the outer peripheral surface of the metal cooling pipe of the evaporator. 2. A fishing boat cooling device for a small fishing boat as set forth in claim 1, wherein the metal cooling pipe is made of a steel pipe, and the outer peripheral surface thereof is nickel plated. 3. A fishing boat cooling device for a small fishing boat as set forth in claim 2, characterized in that the cooling tube whose outer peripheral surface is nickel-plated is further coated with a coating to prevent salt damage.