JP3888789B2 - Ice machine cooler - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ice making machine cooler, and more particularly to an ice making machine cooler that uses an evaporator of a dynamic ice making machine that forms a refrigeration cycle by a compressor, an evaporator, and a condenser as a cooler.
[0002]
[Prior art]
Conventionally, it has been known to use a refrigerator including a compressor, an evaporator, and a condenser, and to use the evaporator of the refrigerator as a cooler for an ice making machine.
FIG. 4 shows a cross-sectional configuration diagram of a conventional ice machine cooler. As shown in FIG. 4, in the conventional one, the wet refrigerant liquid entering from the lower refrigerant liquid inlet nozzle 4 flows diagonally from the refrigerant chamber 2 toward the upper outlet nozzle 10.
Further, the evaporated refrigerant gas is affected by the dynamic pressure due to the speed, and the refrigerant boiling liquid level 9 becomes the highest at the outlet nozzle portion 10, and the refrigerant liquid is easy to carry over.
At a location away from the outlet nozzle 10, the refrigerant boiling liquid level 9 is low and the heat transfer surface is in contact with the refrigerant gas, so that the heat transfer is reduced, evaporating temperature, cooling capacity and COP are lowered, and the cooling surface There was a problem that the temperature became non-uniform and water or low-concentration brine was easily frozen.
[0003]
[Problems to be solved by the invention]
An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a cooler for an ice making machine that does not cause a carryover of a refrigerant liquid and that makes cooling of a heat transfer surface uniform and hardly causes freezing.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, an evaporator of a dynamic ice making machine that forms a refrigeration cycle by a compressor, an evaporator, and a condenser is a horizontal double cylinder type, and a refrigerant chamber through which a refrigerant passes. A cooler for generating slurry-like ice configured as a passage of water or low-concentration brine whose inside is supercooled by latent heat of vaporization of the refrigerant, and a longitudinal passage through which a refrigerant liquid passes and a lower portion of the refrigerant chamber fast with, the upper portion of the coolant chamber and communicating with the coolant chamber in the longitudinal direction of the longitudinal passage and passage through a refrigerant vapor, humid liquid refrigerant providing a plurality of orifices communicating with the coolant chamber in the longitudinal direction of the passage The ice cooler is provided with a plurality of openings for spraying on the heat transfer surface .
In the ice maker cooler, the plurality of openings communicating with the passage in the upper longitudinal direction of the refrigerant chamber may be openings that gradually or gradually narrow as the opening area is closer to the refrigerant gas outlet .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in detail with reference to the drawings.
In FIG. 2, the whole block diagram of the refrigerating cycle which installs the cooler for ice making machines of this invention is shown. In FIG. 2, 1 is an evaporator used as a cooler, 2 is a refrigerant chamber, 3 is cold water or a brine passage, 13 is a compressor, 14 is a condenser, 15 is an expander, and 16 is a liquid separator.
The refrigeration cycle of FIG. 2 will be described. The refrigerant gas from which the refrigerant liquid has been separated by the liquid separator 16 is compressed by the compressor 13, introduced into the condenser 14, cooled by the cooling water 19, and liquefied. Is decompressed by the expansion valve 15 and enters the refrigerant chamber 2 of the cooler 1, evaporates by receiving heat from cold water or brine, enters the liquid separator 16 through the passage 18, and is circulated.
An enlarged sectional view of the cooler 1 is shown in FIG. 1A is a front view, and FIG. 1B is a side sectional view.
[0006]
1, 3 is the same as FIG. 2, 4 is a refrigerant liquid inlet, 5 is a lower longitudinal passage, 6 is an orifice, 7 is an upper longitudinal passage, 8 is an opening, 9 is a refrigerant liquid level, Reference numeral 10 denotes a refrigerant gas outlet.
As shown in FIG. 1, in the present invention, the longitudinal passage 5 is provided in the lower part of the refrigerant chamber 2, and the plurality of orifices 6 are provided in the longitudinal passage 5. Is sprayed onto the heat transfer surface at a high speed (Mach 0.2 to 1.0) to promote heat transfer.
Further, a longitudinal passage 7 is also provided in the upper part of the refrigerant chamber 2 on the outlet side, and the plurality of openings 8 or the areas of the openings are continuously and stepwise changed so that the evaporative refrigerant gas having the full length is spread over the full length. The refrigerant boiling liquid surface 9 is made uniform, and the heat transfer surface is all heat exchanged with the refrigerant liquid, and the carryover of the refrigerant liquid from the outlet nozzle 10 is reduced.
FIG. 3 shows a partially enlarged view in which an opening whose area is continuously changed is provided in the upper longitudinal passage, (a) is a front view, and (b) is an AA cross-sectional view. Thus, the closer to the outlet 10, the narrower the opening makes it possible to suck refrigerant gas on the average in the longitudinal direction.
[0007]
【The invention's effect】
According to the present invention, by adopting the configuration as described above, the heat transfer performance is improved, the evaporation temperature, the cooling capacity, and the COP are improved, the cooling of the heat transfer surface is made uniform, and water or It was possible to provide a cooler for an ice making machine in which freezing of low-concentration brine was difficult to occur.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view of an ice making machine cooler according to the present invention, in which (a) is a front view and (b) is a side cross-sectional view.
FIG. 2 is an overall configuration diagram of a refrigeration cycle to which the ice maker cooler of the present invention is applied.
FIGS. 3A and 3B are partially enlarged views showing an example of an upper longitudinal passage, wherein FIG. 3A is a front view, and FIG.
FIG. 4 is an enlarged cross-sectional view of a conventional ice maker cooler, where (a) is a front view and (b) is a side cross-sectional view.
[Explanation of symbols]
1: Cooler (evaporator), 2: Refrigerant chamber, 3: Water or brine passage, 4: Refrigerant liquid inlet, 5: Lower longitudinal passage, 6: Orifice, 7: Upper longitudinal passage, 8: Opening, 9 : Refrigerant boiling liquid level, 10: Refrigerant gas outlet, 11: Flow of refrigerant, 12: Water or brine, 13: Compressor, 14: Condenser, 15: Expansion valve, 16: Liquid separator, 18: Passage, 19 :Cooling water

Claims (2)

The dynamic ice maker evaporator, which forms a refrigeration cycle with a compressor, an evaporator and a condenser, is a horizontal double cylinder type, and is cooled to the refrigerant chamber through which the refrigerant passes, and the inside is supercooled by the latent heat of vaporization of the refrigerant. in the cooler to produce a slurry of ice configured as water or low concentration brine passage, a lower portion of the coolant chamber, and communicating with the coolant chamber in the longitudinal direction of the longitudinal passage and passage through a refrigerant liquid, the refrigerant Are provided with a plurality of orifices for injecting the dampening liquid onto the heat transfer surface at a high speed, and a longitudinal passage through which the refrigerant vapor passes and a plurality of openings communicating with the refrigerant chamber in the longitudinal direction of the passage are provided at the upper portion of the refrigerant chamber. A cooler for an ice making machine. 2. The ice making according to claim 1, wherein the plurality of openings communicating with the upper longitudinal passage of the refrigerant chamber are openings that narrow gradually or continuously as the opening area is closer to the refrigerant gas outlet. Machine cooler.

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