JPS62158969A - Chiller for cooling liquid - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Industrial Application Field The present invention mainly relates to a chiller for cooling liquids used for food, such as fresh water, salt water, water containing sugar, etc. This invention relates to a chiller that is washable and does not mix refrigerant into cold water.

B. Conventional technology and problems A cooler that cools a liquid using a commonly used refrigerant is one that puts the liquid in a tank, installs a refrigerant pipe inside the tank, and cools the liquid with the refrigerant pipe. It has a cooling structure.

This structure poses no problem if the liquid is clear water, but if the liquid contains dirt and this dirt adheres to the surface of the refrigerant pipe, the deposits on the refrigerant pipe cannot be easily removed. Also, with this structure, it is difficult to make the liquid flow at high speed on the surface of the refrigerant pipe, and if the temperature of the cold water is lowered to near the freezing point, ice will adhere to the surface of the refrigerant pipe, and the ice will significantly reduce the cooling effect of the liquid. do.

A cooler having the structure shown in FIG. 7 has been developed as a cooler to eliminate this drawback. This cooler has flanges 2 at both open ends of a cylindrical casing 1, and an opening/closing lid 3 thereon.
is attached, and the two partition walls 4 are fixed at positions somewhat centrally from both ends of the inside of the casing 1, and a refrigerant vaporization chamber 5 is formed within the partition wall 4.
A cold water pipe 6 is welded to the partition wall, passing through the vaporization chamber in an airtight manner.

This cooler is provided with communication chambers 7 on both sides of a casing 1 that communicate the ends of cold water pipes 6, and a vaporization chamber 5 in the center of the casing 1.
has been established. In a cooler with this structure, the inside of the cold water pipe 6 can be easily cleaned by opening the lid 3, and since the liquid flows through the thin cold water pipe 6, the flow rate of the liquid can be increased, and the water temperature can be set close to the freezing point to increase the temperature. Cooling efficiency can be achieved.

However, in a water cooler with this structure, even if an extremely small gap is created between the end of the cold water pipe 6 and the partition wall 4, the refrigerant is pressurized from the gap and enters the communication chamber 7 from the vaporization chamber. There is a drawback that it gets mixed in. Moreover, since the refrigerant contains oil for lubricating the compressor, when the refrigerant enters the water, there is a problem that the lubricating oil for the compressor is also mixed into the water. This is a drawback that must be avoided since devices of this type are often used for cooling food products.

Furthermore, when a gap is created between the cold water pipe 6 and the partition wall 4 and the refrigerant flows out from there, the pressure on the suction side of the compressor decreases, the pressure in the vaporization chamber 5 decreases, and the pressure inside the cold water pipe 6 decreases. Water, etc. is inhaled. When moisture is sucked into the compressor,
Since the refrigerant temperature on the suction side of the compressor is extremely low, water freezes within the compressor, causing damage to the suction valve of the compressor.

Furthermore, food-grade liquids are often mixed with metal corrosives such as salt, and cold water pipes corrode and the refrigerant tends to get mixed into the liquid over time. If a titanium alloy made of aluminum or the like was used, it became extremely difficult to completely weld the partition walls, that is, to connect them with no gaps at all.

The present invention was developed with the aim of solving this conventional drawback, and an important objective of the present invention is to provide cold water that does not allow refrigerant to mix with the liquid even if there is a minute gap between the cold water pipe and the casing. To provide a chiller for liquid cooling equipped with a container.

C1 Means for Solving Conventional Problems A chiller for liquid cooling consists of a compressor P that pressurizes a refrigerant, a radiator that cools and liquefies the pressurized refrigerant, and a radiator C as shown in Fig. 1. As shown in FIG. 2, the cooler E has a cold water pipe 6 passing through it, and a liquid such as water is passed through the cold water pipe 6 for cooling.

The cooler E includes a casing 1 having an airtightly sealed refrigerant vaporization chamber 5, a plurality of cold water pipes 6 that airtightly penetrate the casing 1, and a communication chamber connecting the plurality of cold water pipes 6 at both ends. 7, the communication chamber 7 and the vaporization chamber 5 are separated by a double partition wall separated from each other, and the communication chamber 7 has a cold water pipe 6.
The extended line of the opening/closing lid 3 is watertightly closed.

00 Actions and Effects The refrigerant pressurized by the compressor P is cooled and liquefied by the radiator C, evaporated by the cooler E to cool the liquid in the cooler E, and sucked into the compressor P again to be pressurized. sent out.

In FIG. 2, if there is a gap between the casing l and the cold water pipe 6, the refrigerant in the casing 1 of the cooler E leaks into the atmosphere outside the casing 1, but this leaks into the atmosphere from the cold water pipe 6. It does not flow into the communication chamber 7 whose ends are connected.

In addition, the communication chambers 7 on both sides are arranged apart from the vaporization chamber 5 of the casing 1, and are connected via a plurality of cold water pipes 6, so the vaporization chamber 5 and the communication chamber 7 have a double structure. They are separated from each other by a partition wall, and the liquid in the communication chamber 7 and the refrigerant in the vaporization chamber 5 do not mix. The cold water pipe 6 passes through the vaporization chamber 5, and since the vibrator forming the cold water pipe 6 can be manufactured in large quantities with uniformity, there is almost no refrigerant mixed into the liquid from the pipe.

Furthermore, the end of the cold water pipe 6 is connected to the communication chamber 7, but even if there is a gap in this connection, the liquid may leak to the outside, but the refrigerant will not mix into the liquid. .

Therefore, it is possible to completely eliminate the mixing of refrigerant into the liquid, and it can be used safely for food cooling.

Also, even if there is a gap between the cold water pipe and the casing,
Since it does not give bad marks to the liquid, it is easy to connect the cold water pipe to the casing, and it is also possible to use materials such as titanium alloys, which are difficult to completely weld, in the cold water pipe with confidence. It also has features that allow it to be used for a variety of purposes.

Furthermore, since the cold water pipe passes through the vaporization chamber and the opening/closing lid 3 is provided in the communication chamber on an extension of the cold water pipe, the feature that the cold water pipe can be cleaned easily and neatly is not lost.

E. Preferred embodiment Embodiments of the present invention will be described below based on the drawings.

The liquid cooling chiller shown in FIG. 1 includes a compressor P that pressurizes the refrigerant, a radiator C that cools the pressurized refrigerant and liquefies it, and a radiator C that evaporates the liquefied refrigerant to remove heat from the surroundings. This consists of a cooler E that cools the liquid 7 such as water.

The circulating cooling cycle consisting of a compressor P, a radiator C, and a cooler E is the same as that of a conventional chiller, but in the present invention, the cooler E has a unique configuration. Therefore, a specific example of the cooler E will be described in detail below.

The cooler E shown in FIGS. 2 and 6 includes a plurality of cold water pipes 6 that airtightly penetrate partition walls 4 on both sides of a cylindrical casing 1
and a communication chamber 7 that connects the ends of a plurality of cold water pipes 6.

The casing 1 is airtightly sealed at both ends with a partition wall 4 so that the refrigerant is vaporized and removes heat, and a vaporization chamber 5 is provided inside the casing 1. The vaporization chamber 5 has a refrigerant inlet 15 and an outlet. 1
6 are opened, the inlet 15 is connected to the radiator C via an expansion valve (not shown), and the outlet 16 is connected to the suction side of the compressor P.

The cold water pipe 6 is formed to have a slightly longer overall length than the casing 1, and both ends thereof hermetically penetrate the partition wall 4 of the casing 1 and further protrude from the partition wall 4.

The cold water pipe 6 is preferably a corrosion-resistant metal pipe made of titanium alloy, stainless steel, or the like.

To make the cold water pipe 6 airtightly pass through the partition wall 4 of the casing, as shown in FIG. It is preferable to expand the hole and connect it to the inner surface 10 of the through hole, that is, to connect it with an expander.

It is preferable that a groove 11 is provided in the inner surface 10 of the through hole in the circumferential direction as shown in FIG. 3, and the outer surface of the cold water pipe 6 to be expanded is press-fitted into the groove 11 so as to be brought into airtight contact.

Furthermore, as shown in FIG. 3, a caulking material 9 that has strong adhesion to metal, hardens hard, is resistant to cold, and has little expansion is attached to the outer periphery of the cold water pipe outside the partition wall 4. You can also do it.

Furthermore, as shown in FIG. 2, it is also possible to apply caulking material 9 to the entire outer surface of the partition wall.

When using a metal pipe, such as iron, copper, brass, or aluminum, which is easy to weld, for the cold water pipe 6, it can be connected by welding to the partition wall 4, by welding with an expander, or by using a combination of both.

The ends of the cold water pipe 6 are watertightly connected to communication chambers 7 at both ends of the casing. The communication chamber 7 connects a plurality of cold water pipes 6 in series, in parallel, or in series, and allows liquid such as cold water to flow through the cold water pipes.

FIGS. 4 and 5 show communication chambers located on the left and right sides of the cold water pipes 6 shown in FIG. It is equipped with

The partition wall 14 extends to the same plane as the inner surface of the lid 3 so as to partition the communication chamber 7 when the lid 3 is closed.

Both sides of the communication chamber 70, that is, the extension line of the cold water pipe 6, are watertightly closed with opening/closing lids 3 so that the inside of the cold water pipe can be easily cleaned. As shown in FIG. 2, the opening/closing lid 3 has an upper edge attached to the upper edge of the communication chamber 7 via a hinge 12, and a flange 2 is provided around the periphery so that the communication chamber 7 can be sealed watertightly. The flange 2 is clamped with a nut 13. To open the pipe, remove the nut 13, lift the lower part of the pipe to open it, and in this state push a cleaning tool into the cold water pipe to clean the inside.

The communication chamber 7 has a liquid inlet 17 as shown in FIG.
and an outlet 18 are opened.

By the way, the liquid that flows into the cold water pipe 6 and is cooled includes:
Clean water or a brine solution in which salt or sugar is mixed with clean water to lower the freezing point to below 0° C. is used. Brine liquid with a freezing point below 0℃ cools food to the state just before freezing.
It is often used to maintain high freshness for long periods of time.

As shown in FIG. 2, the vaporization chamber 5 and the communication chamber 7 are separated from each other by a double partition wall consisting of the partition wall 4 of the casing 1 and the wall of the communication chamber 7. The interval is usually 10
They are separated by at least 1 mm, preferably at least 10 cm.

By the way, as shown in Figure 1, if two compressors that can be operated separately are connected in parallel, by operating one of them, the liquid can be cooled at half the capacity. The water temperature can be controlled through three stages of two-unit operation, allowing for precise temperature control of the liquid, as well as power-saving operation when only one compressor is operated during low cooling loads.

Furthermore, if three or more compressors are connected in parallel and the operation of each compressor is controlled separately, more precise control becomes possible.

[Brief explanation of drawings]

Fig. 1 is a block diagram of a liquid cooling chiller, Fig. 2 is a sectional view of a cooler used in the chiller of the present invention, Fig. 3 is a sectional view showing a state in which cold water pipes are brought into close contact with a partition wall, and Fig. 4 is a sectional view of a cooler used in the chiller of the present invention. 5 and 5 are front views showing the open/close lids of the left and right communication chambers of the cooler shown in FIG. 2, and FIG. 6 shows the inflow of refrigerant and liquid,
FIG. 7 is a cross-sectional view of a conventional cooler showing an outlet. 1. Casing, 2. Flange, 3. Opening/closing lid, 4. Partition wall, 5. Vaporization chamber, 6. Cold water pipe, 7. Communication chamber,
8...Through hole, 9...Caulking material, 10...
Inner surface of through hole, 11... Groove, 12... Hinge, 13... Nut, 14... Partition wall, 15... Inlet, 16... Outlet, 17... Inlet, 1
8.Outlet C..Radiator, E..Cooler, P..Compressor.

Claims (3)

[Claims] (1) Consists of a compressor that pressurizes refrigerant, a radiator that cools and liquefies the pressurized refrigerant, and a cooler that vaporizes the refrigerant that has been liquefied in the radiator. In a liquid cooling chiller configured to cool the liquid by passing the liquid through the chilled water pipe, the cooler includes a casing having an airtightly sealed refrigerant vaporization chamber, and a plurality of tubes passing through the casing in an airtight manner. It has a cold water pipe and a communication chamber that connects multiple cold water pipes at both ends.The communication chamber and the vaporization chamber are separated by a double partition wall separated from each other, and the communication chamber is an extension of the cold water pipe. A chiller for liquid cooling characterized by a line that is watertightly closed with an opening/closing lid. (2) A chiller for liquid cooling according to claim (1), wherein the cold water pipe is a pipe made of titanium alloy. (3) The casing penetrating portion of the cold water pipe is expanded to the outer periphery and is airtightly attached to the casing.
The chiller for liquid cooling described in item 1).