JPH10185376A - Ice making equipment - Google Patents

Abstract

(57) [Problem] To provide an ice making device capable of increasing the contact area between water and gas in an evaporator. SOLUTION: An evaporator 1 of an ice making device for making ice using an absorption type refrigeration cycle includes a container main body 2 filled with water as a refrigerant liquid, and an upper refrigerant liquid supply chamber provided in the container main body 2. A partition plate 5 having a through hole 5a formed therein for partitioning the chamber 3 and a lower ice generating chamber 4 and communicating the chambers 3 and 4;
The through-hole 5a of the partition plate 5 is loosely inserted into a rod-shaped body 6 suspended from the refrigerant liquid supply chamber 3 side to the ice generation chamber 4 side, and supplied into the refrigerant liquid supply chamber 3. Water is allowed to fall into the ice forming chamber 4 from around the rod 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making apparatus using an absorption refrigeration cycle.

[0002]

2. Description of the Related Art Some ice making apparatuses use an absorption refrigeration cycle. Conventionally, as shown in FIG. 4, this ice making device has an evaporator 51 for evaporating water as a refrigerant, and a water vapor evaporating in the evaporator 51 for absorbing the water vapor into an absorbing liquid composed of a lithium bromide aqueous solution. Absorber 52, regenerator 53 that absorbs water vapor with absorber 52, and heats diluted absorbent having a reduced concentration to evaporate water to obtain a concentrated absorbent, and evaporates with regenerator 53. A condenser 54 for condensing water vapor, wherein the water is cooled by the heat of vaporization of the water in the evaporator 51 to obtain ice.

The ice making apparatus is provided with an ice storage tank 55 for guiding the ice obtained by the evaporator 51 as a slurry and storing the ice. The ice storage tank 55 is provided with a heat transfer tube 55a.
Cold water close to 0 ° C. is supplied to a cold water demand point via a cold water supply pipe 56 connected to 5a.

[0004]

According to the structure of the evaporator 51, almost all of the steam is generated.
The ice is produced from the surface of the water stored in 1 and, therefore, ice is generated from the water surface, particularly near the inner wall surface of the evaporator 51.

As a result, ice generated on the water surface adheres and grows over time on the inner wall surface of the evaporator 51, and the contact area between water and gas (steam), that is, the evaporation area is reduced, so that the ice making efficiency is reduced. There was a problem of doing.

Accordingly, an object of the present invention is to provide an ice making device capable of increasing the contact area between water and gas in an evaporator.

[0007]

According to a first aspect of the present invention, there is provided a first ice making apparatus comprising: an evaporator of an ice making apparatus for making ice using an absorption refrigeration cycle; A partition body provided in the container body, partitioned into an upper coolant liquid supply chamber and a lower ice generation chamber, and formed with a through hole communicating with both chambers; and a through hole of the partition plate. And the rod-shaped body hanging down from the refrigerant liquid supply chamber side to the ice generation chamber side, and the water supplied into the refrigerant liquid supply chamber falls from the periphery of the rod-shaped body into the ice generation chamber. It is intended to be.

[0008] A second ice making device of the present invention comprises an evaporator of an ice making device for making ice using an absorption refrigeration cycle,
A container main body filled with water as a refrigerant liquid, a partition plate provided in the container main body to partition an upper refrigerant liquid supply chamber and a lower ice generation chamber, and inserted into the partition plate to supply the refrigerant liquid. And a tubular body that drops indoor water into the ice producing chamber.

Further, a third ice making device of the present invention comprises an evaporator of an ice making device for making ice using an absorption refrigeration cycle, comprising: a container main body filled with water as a refrigerant liquid; And a filler that is disposed below the dispersion tube to disperse and drop water.

According to each of the above structures, the water and the gas, which are the refrigerant supplied into the container body constituting the evaporator, are sufficiently brought into contact with each other.
For example, the ice making effect is improved as compared with the case where steam is generated only from the water surface in the lower portion inside the container body.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an ice making device according to a first embodiment of the present invention will be described with reference to FIG.

The gist of the present invention lies in the configuration of an evaporator in an ice making device using an absorption refrigeration cycle.
In the embodiments described below, only the evaporator will be described, and description of other components will be omitted.

As shown in FIG. 1, the evaporator 1 of the first embodiment has a cylindrical shape (not limited to a cylindrical shape but may be, for example, a prismatic shape) filled with water as a refrigerant liquid. A partition provided with a plurality of through-holes 5a provided in the container main body 2 and divided into an upper refrigerant liquid supply chamber 3 and a lower ice generation chamber 4 and communicating the chambers 3 and 4 with each other. The plate 5 is inserted through the through holes 5a of the partition plate 5 so as to have a gap a (idle insertion).
And a plurality of rods (in some cases, pipes may be used) 6 suspended from the refrigerant liquid supply chamber 3 to the ice generation chamber 4.

The upper end of each rod 6 is fixed to the upper wall 2a of the container body 2. A coolant liquid supply pipe 7 is connected to the side wall 2b of the container body 2 corresponding to the coolant liquid supply chamber 3, and a bottom wall 2c corresponding to the ice formation chamber 4 is provided.
Is provided with an ice extraction tube 8 for extracting ice.

Therefore, the water supplied into the coolant supply chamber 3 in the container body 2 falls into the ice formation chamber 4 from the gap a between the through hole 5a and the rod-shaped body 6. Then, at the time of this drop, the water droplet comes into contact with a gas (specifically, water vapor, the same applies hereinafter), heat is efficiently removed, and the ice becomes ice, and falls on the water surface.

When water drops falling along the rod 6 become ice, the ice is prevented from adhering to the rod 6 by water falling from above. As described above, when water falls along the rod-shaped body, the water comes into contact with the gas and heat is efficiently taken away to become ice, so that water vapor is generated only from the water surface in the lower portion of the inside of the container body as in the related art. The ice making effect is significantly improved as compared with the case.

Further, since most of the ice is generated when the water falls, the adhesion of ice on the inner wall surface of the evaporator as in the prior art.
No growth occurs. Next, an ice making device according to a second embodiment of the present invention will be described with reference to FIG.

As shown in FIG. 2, the evaporator 11 in the second embodiment comprises a cylindrical container body 12 filled with water as a refrigerant liquid, and an upper refrigerant provided in the container body 12. A partition plate 15 for partitioning the liquid supply chamber 13 and the ice generation chamber 14, and a tubular body 16 that is inserted through a plurality of locations of the partition plate 15 and drops water in the refrigerant liquid supply chamber 13 into the ice generation chamber 14. It is composed of

The upper end of the tubular body 16 is fixed to the partition plate 15 so as to protrude upward from the partition plate 15, and a hole for dispersing and supplying water to the inner peripheral surface of the tubular body 16 is provided in the upper end. A nozzle member 17 having 17a is provided.

A refrigerant liquid supply pipe 18 is connected to a side wall 12a of the container body 12 corresponding to the refrigerant liquid supply chamber 13, and ice is taken out from a bottom wall 12b corresponding to the ice generation chamber 14. An ice extraction pipe 19 is provided to pass therethrough.

Therefore, the water supplied into the refrigerant liquid supply chamber 13 in the container body 12 falls along the inner peripheral surface of the tubular body 16 toward the ice generation chamber 14. And at the time of this fall,
The water droplets come into contact with the gas, heat is efficiently removed and becomes ice,
Ice falls on the surface of the water.

In this case, as in the first embodiment, when water falls along the inner peripheral surface of the tubular body 16, the water comes into contact with the gas and heat is efficiently taken away to form ice and water. Therefore, the ice making effect is remarkably improved as compared with the conventional case in which steam is generated only from the water surface in the lower portion inside the container body.

Next, an ice making device according to a third embodiment of the present invention will be described with reference to FIG. As shown in FIG. 3, an evaporator 21 according to the third embodiment has a cylindrical container main body 22 filled with water as a refrigerant liquid, and is inserted and arranged at an upper part in the container main body 22 from a side wall 22a. And a filling layer 24 disposed below the dispersion tube 23 in the container body 22.

The filling layer 24 is filled with a large number of fillers, and specifically, is filled with a large number of Teflon (registered trademark) pole rings (also called Raschig rings).

The bottom wall 22 corresponding to the ice forming chamber 24
An ice extraction tube 25 for extracting ice is inserted through b. Therefore, the water dropped from above in the container main body 22 from the dispersion pipe 23 is dispersed in the filling layer 24 and falls. At the time of the dispersion drop, the contact area and the contact time with the gas are also increased, and the heat is efficiently deprived to fall down as ice. Also in this case, the ice generated in the packed bed 24 falls downward without remaining in the packed bed 24 due to the water that is dispersed and dropped.

As described above, since the packing layer (filling material) is arranged in the container body, similar to the above-described embodiments,
Since the contact between water and gas is sufficiently performed, the heat is efficiently taken away and the ice is formed, so that the ice making effect is reduced as compared with the case where water vapor is generated only from the water surface in the lower part of the container body as in the past. Significantly improved.

[0027]

As described above, according to the structure of each ice making device of the present invention, water and gas (refrigerant vapor, specifically, water vapor), which are the refrigerant supplied into the container main body constituting the evaporator, are produced. Due to sufficient contact, heat is efficiently taken away and becomes ice,
Therefore, the ice making effect is remarkably improved as compared with the conventional case in which steam is generated only from the water surface in the lower portion inside the container body.

Further, since most of the ice is generated when the water falls, the adhesion of the ice on the inner wall of the evaporator as in the prior art is reduced.
No growth occurs.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an evaporator of an ice making device according to a first embodiment of the present invention.

FIG. 2 is a sectional view of an evaporator of an ice making device according to a second embodiment of the present invention.

FIG. 3 is a sectional view of an evaporator of an ice making device according to a third embodiment of the present invention.

FIG. 4 is a diagram showing a schematic configuration of an entire conventional ice making device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Evaporator 2 Container main body 3 Refrigerant liquid supply chamber 4 Ice generation chamber 5 Partition plate 5a Through hole 6 Rod 11 Evaporator 12 Container main body 13 Refrigerant liquid supply chamber 14 Ice generation chamber 15 Partition plate 16 Tubular body 17 Nozzle member 21 Evaporation Container 22 Container body 23 Dispersion tube 24 Packing layer

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuji Araki 4-5-26 Kami-Osaki, Shinagawa-ku, Tokyo Mansion Gajoen (72) Inventor Yoshito Masuda 2-4-12- Ichikawa, Ichikawa, Chiba 301 (72) Inventor Tetsuro Miyamoto 1-10-7-301 Hirata, Ichikawa-shi, Chiba (72) Inventor Takashi Yoshida 2-6-1 Nishishinjuku, Shinjuku-ku, Tokyo In-house Daiki Co., Ltd. (72) Inventor Masanobu Saito 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Co., Ltd. Oki Company (72) Inventor Hiroyuki Sasao 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Co., Ltd. Oki Company (72) Inventor Masaharu Furuji Osaka, Osaka 5-3-28 Nishikujo, Konohana-ku Hitachi Zosen Corporation (72) Inventor Kazuhisa Kira 5-28-3-Nishikujo, Konohana-ku, Osaka-shi, Osaka Hitachi Zosen Corporation (72) Inventor Takeshi Yamanan Osaka 5-3-28 Nishikujo, Konohana-ku, Osaka City, Hitachi Zosen Corporation (72) Inventor Yoshinobu Takagi 5-72-3-Nishikujo, Konohana-ku, Osaka City, Osaka Prefecture Hitachi Zosen Corporation (72) Inventor Sato Shinwa 5-3-28 Nishikujo, Konohana-ku, Osaka-shi Inside Hitachi Zosen Corporation

Claims (3)

[Claims] An evaporator of an ice making device for making ice using an absorption refrigeration cycle includes a container main body filled with water as a refrigerant liquid, an upper refrigerant liquid supply chamber provided in the container main body, and a lower part. A partition plate formed with a through hole communicating with both chambers while partitioning into the ice generation chamber, and a rod-shaped hanging through the through hole of the partition plate from the refrigerant liquid supply chamber side to the ice generation chamber side. An ice making device, wherein the water supplied to the refrigerant liquid supply chamber is dropped from the periphery of the rod into the ice generating chamber. 2. An evaporator of an ice making device for making ice using an absorption refrigeration cycle includes a container main body filled with water as a refrigerant liquid, an upper refrigerant liquid supply chamber provided in the container main body, and a lower part. An ice-making apparatus, comprising: a partition plate for partitioning into the ice generation chamber; and a tubular body inserted through the partition plate to drop water in the coolant supply chamber into the ice generation chamber. 3. An evaporator of an ice making device for making ice using an absorption refrigeration cycle, comprising: a container main body filled with water as a refrigerant liquid; and a dispersing unit disposed at an upper portion of the container main body for dispersing and dropping water. An ice making device comprising: a tube; and a packing disposed below the dispersion tube.