JP3888815B2 - Ice machine cooler - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
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]
A conventional method will be described with reference to FIG.
FIG. 3 is a conventional ice machine cooler, FIG. 3 (a) is a front sectional view, and FIG. 3 (b) is a side sectional view. 1 is a double cylindrical evaporator used as a cooler, 2 is an inner cylinder, Refrigerant chamber constructed between the outer cylinder, 3 is an ice making chamber through which cold water or brine in the inner cylinder passes, 4 is a refrigerant liquid inlet nozzle, 5 is a refrigerant side lower longitudinal passage, 6 is an orifice, 7 is on the refrigerant side Part longitudinal passage, 8 is an opening, 9 is a refrigerant boiling liquid level, 10 is a refrigerant gas outlet nozzle, 11 is a refrigerant flow, 12 is water or brine, and 13 is a cold water / brine side stirrer.
As shown in FIG. 3, in the conventional one, the wet refrigerant liquid entering from the refrigerant liquid inlet nozzle 4 flows into the refrigerant-side lower longitudinal passage 5, passes through the orifice 6, and between the inner cylinder and the outer cylinder. The refrigerant flows from the refrigerant chamber 2 to the refrigerant gas outlet nozzle 10 through the opening 8 and the refrigerant side upper longitudinal passage 7. In the refrigerant chamber 2 formed between the inner cylinder and the outer cylinder, the refrigerant absorbs heat from the cold water or brine 12 using the outer peripheral surface of the inner cylinder as a heat transfer surface and evaporates, and cools water or brine with the latent heat of evaporation.
[0003]
The cooling capacity of the cooler is affected by the heat transfer performance on the cooled side (cold water / brine side) and the heat transfer performance on the cooling side (refrigerant side), and it is desirable to improve these performances. Regarding the heat transfer on the cooled side (cold water / brine side), the heat transfer is improved by the cold water / brine side stirrer 13; however, the heat transfer on the cooling side (refrigerant side) is particularly improved. Not implemented.
As a result, in the middle and lower part of the refrigerant chamber 2 formed between the inner cylinder and the outer cylinder, the refrigerant cannot be sufficiently evaporated, cooling due to latent heat of vaporization is not sufficiently performed, heat transfer is reduced, evaporation temperature, cooling In addition to lowering the capacity and COP, the temperature of the cooling surface became non-uniform, and water or brine was likely to freeze.
[0004]
[Problems to be solved by the invention]
The present invention eliminates the problems of the prior art, promotes the turbulent flow of the refrigerant flowing in the refrigerant chamber formed between the inner cylinder and the outer cylinder, evaporates the refrigerant uniformly, and cools the heat transfer surface. An object of the present invention is to provide a cooler for an ice making machine that can improve the cooling capacity uniformly to increase the cooling capacity and hardly cause freezing.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, in a cooler used in a dynamic ice making machine that forms a refrigeration cycle by connecting a compressor, an evaporator, and a condenser, the evaporator is a double cylinder type, A cooler having a structure in which a refrigerant chamber through which the refrigerant passes through and an ice making chamber through which water or low-concentration brine passes through to generate slurry-like ice is formed, and resistance for diffusing the refrigerant flow rate in the refrigerant chamber For ice making machines characterized in that the body is mounted in a dense manner near the refrigerant gas outlet where the refrigerant flow rate in the refrigerant chamber is high, and at a position far from the refrigerant gas outlet, with a gradual change in density . It is a cooler.
In the ice making machine cooler, the resistor, in the longitudinal direction or the circumferential direction of the coolant chamber, a wire mesh-like, Ru can be attached to a bellows or spirally.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
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 an ice making machine cooler, the cooler is a horizontal double cylinder type, and a refrigerant passes outside. The refrigerant chamber is configured as an ice making chamber that generates slurry-like ice in the passage of water or low-concentration brine that is supercooled by the latent heat of vaporization of the refrigerant, and has a wire mesh shape in the longitudinal direction or circumferential direction of the refrigerant chamber Alternatively, a bellows-like, spiral-like or other shape resistor is attached to promote the turbulent flow and evaporation of the refrigerant and increase the heat transfer area to improve the heat transfer.
[0007]
Next, the present invention will be described with reference to the drawings.
In FIG. 1, the whole block diagram of the refrigerating cycle which installs the cooler for ice making machines of this invention is shown.
In FIG. 1, 1 is a double cylindrical evaporator used as a cooler, 2 is a refrigerant chamber formed between an inner cylinder and an outer cylinder, 3 is an ice making chamber through which cold water or brine in the inner cylinder passes, and 12 is Water or brine, 14 is a compressor, 15 is a condenser, 16 is an expansion valve, 17 is a liquid separator, and 21 is a refrigerant diffusion resistor.
The refrigeration cycle of FIG. 1 will be described. The refrigerant gas from which the refrigerant liquid has been separated by the liquid separator 17 is compressed by the compressor 14, introduced into the condenser 15, cooled by the cooling water 20, and liquefied and liquefied refrigerant. The liquid is decompressed by the expansion valve 16, enters the refrigerant chamber 2 formed between the inner cylinder and the outer cylinder of the double cylindrical evaporator 1 used as a cooler from the refrigerant liquid pipe 18, and enters the cylindrical ice making chamber 3. Heat is taken from the cold water or brine 12 passing through and evaporated to pass through the passage 19 and enter the liquid separator 17 for circulation. The cold water or brine 12 passing through the ice making chamber 3 is cooled and stirred with a stirrer 13 to generate slurry-like ice.
[0008]
FIG. 2 shows a cross-sectional configuration diagram of a double cylindrical evaporator used as a cooler for an ice making machine of the present invention. 2A is a front sectional view, and FIG. 2B is a side sectional view.
In FIG. 2, reference numerals 1 to 13 have the same meaning as in FIG. 3, and 21 is a refrigerant diffusion resistor. The refrigerant diffusion resistor 21 is spirally installed in the refrigerant chamber 2 between the inner cylinder and the outer cylinder of the double-cylindrical evaporator 1, and the installation state is dense in the vicinity of the refrigerant gas outlet A. In the place B away from A, it is changed gradually and gradually.
In this way, the wet refrigerant liquid entering from the refrigerant liquid inlet nozzle 4 flows into the refrigerant-side lower longitudinal passage 5 as shown in FIG. 3 and passes through the orifice 6 between the inner cylinder and the outer cylinder. The refrigerant evaporates as it passes through the refrigerant chamber 2 constituted by the above, but in the present invention, the provision of the refrigerant diffusion resistor 21 promotes the turbulent flow of the refrigerant between the inner cylinder and the outer cylinder. The refrigerant can sufficiently evaporate in the middle and lower parts of the refrigerant chamber 2 to be configured, and the latent heat of vaporization can be used effectively. Furthermore, the heat transfer area is increased by attaching the refrigerant diffusion resistor 21.
[0009]
【The invention's effect】
According to the present invention, with the above-described configuration, the cooling of the cooler is sufficiently performed by promoting the evaporation of the refrigerant and increasing the heat transfer area, the heat transfer is improved, the cooling capacity and the COP are increased, and the cooling surface is increased. The temperature of the water becomes uniform, and freezing of water or brine can be prevented.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a refrigeration cycle in which an ice maker cooler according to the present invention is installed.
FIG. 2 is a cross-sectional configuration diagram showing an example of an evaporator used as a cooler for an ice making machine of the present invention, (a) a front cross-sectional view and (b) a side cross-sectional view.
FIG. 3 is a cross-sectional configuration diagram of an evaporator used in a conventional ice making machine cooler, (a) a front cross-sectional view and (b) a side cross-sectional view.
[Explanation of symbols]
1: a double cylindrical evaporator used as a cooler, 2: a refrigerant chamber configured between an inner cylinder and an outer cylinder, 3: an ice making chamber through which cold water or brine in the inner cylinder passes, 4: a refrigerant liquid inlet nozzle, 5: Refrigerant-side lower longitudinal passage, 6: Orifice, 7: Refrigerant-side upper longitudinal passage, 8: Opening, 9: Refrigerant boiling liquid level, 10: Refrigerant gas outlet nozzle, 11: Flow of refrigerant, 12: Water or Brine, 13: Cold water / brine side stirrer, 14: Compressor, 15: Condenser, 16: Expansion valve, 17: Liquid separator, 18: Refrigerant liquid pipe, 19: Passage, 20: Cooling water, 21: Refrigerant diffusion Resistors

Claims (2)

In a cooler used in a dynamic ice making machine that connects a compressor, an evaporator, and a condenser to form a refrigeration cycle, the evaporator is a double cylinder type, a refrigerant chamber through which a refrigerant passes, and a water inside. Alternatively, the cooler is configured as an ice making chamber through which low-concentration brine passes to generate slurry-like ice, and a resistor for diffusing the refrigerant flow rate is provided in the refrigerant chamber, and the refrigerant chamber has a high refrigerant flow rate. A cooler for an ice making machine, wherein the vicinity of the gas outlet is “dense” and the position far from the refrigerant gas outlet is “sparse” and the density is changed stepwise .   2. The ice maker cooler according to claim 1, wherein the resistor is attached in a wire mesh shape, a bellows shape, or a spiral shape in a longitudinal direction or a circumferential direction of the refrigerant chamber.

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