JP2019203684A - Cooling system for ice making machine - Google Patents

Abstract

To provide a cooling system for an ice making machine capable of improving ice making quality by stably keeping a temperature of a refrigerant supplied to a drum, and reducing manufacturing costs by using optimum components.SOLUTION: A cooling system for cooling a drum by circulating a refrigerant in a drum-type ice making machine, includes an expansion nozzle disposed in a manner of being inserted into a refrigerant supply pipe, a preliminary cooling portion wound on an outer peripheral surface of a refrigerant recovery pipe in a surface contact manner, and a temperature sensor portion measuring a temperature of the drum to adjust an operation start timing of the drum, thus ice making quality can be improved by stably keeping a temperature of the refrigerant, manufacturing costs can be reduced, and a constant production amount can be kept.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a cooling system for an ice making machine, and more particularly, to a cooling system for an ice making machine that can improve the cooling system with a drum type ice making machine, maintain good ice making quality, and reduce costs.

  Generally, a drum type ice making machine is installed so that a cylindrical ice making drum is partially stacked in a raw material water tank (tray). When the ice making drum is cooled and rotated by a cooling system, the surface of the ice making drum is placed. An ice layer is grown, and the ice layer is scratched with a blade to produce powdered ice.

  It is a cooling system for cooling a drum with such a drum type ice making machine, and a refrigeration cycle composed of a compressor, a condenser, an expansion valve, an evaporator, etc. is generally used. Many new technologies with improved cooling systems have been proposed to improve ice-making quality and cooling efficiency.

  As an example, according to Korean Registered Patent No. 10-1463305 (Patent Document 1), a refrigerant, a condenser, a refrigerant supply pipe and a refrigerant recovery pipe constitute a refrigeration cycle, and the refrigerant pipe is branched to provide two refrigerant pipes. In this way, a refrigerant distribution device for a drum type ice making machine has been proposed in which the ice making operation and the ice storage cooling function can be performed using one refrigeration cycle.

  As another example, according to Korean Registered Patent No. 10-1552613 (Patent Document 2), the frozen oil collected on the floor is collected in a collecting tube using a trough-shaped wing, thereby freezing We propose a refrigeration oil recovery system for drum ice makers that improves efficiency and ice quality.

  However, in such a conventional ice making machine cooling system, there is a possibility that the temperature of the refrigerant supplied to the drum may fluctuate, which causes a problem that the ice making quality is deteriorated. In addition, there is a problem that the surface temperature of the drum at the beginning of operation is not constant and the amount of ice production becomes irregular.

  Therefore, there is a need to develop an ice maker cooling system with improved performance, which can solve the problems in the conventional ice making apparatus and can reduce the manufacturing cost by using optimum parts.

Korean Registered Patent No. 10-1463305 Korean Registered Patent No. 10-1552613

  The present invention is for improving the problems in the conventional ice making machine described above, and an object of the present invention is to stably maintain the temperature of the refrigerant supplied to the drum and improve the ice making quality. It is possible to provide a cooling system for an ice making machine that can reduce manufacturing costs by using optimum parts.

  A cooling system for circulating a refrigerant in a drum type ice making machine to cool the drum, a refrigerant supply pipe for supplying the refrigerant into the drum, a refrigerant recovery pipe for collecting the refrigerant outside the drum, A compressor that compresses the refrigerant from the refrigerant recovery pipe at a high pressure, a condenser that liquefies the refrigerant from the compressor, an expander that expands and decompresses the refrigerant from the condenser, and from the expander And an evaporator for evaporating the refrigerant inside the drum.

  The expander is formed of an expansion nozzle that is inserted and installed on a refrigerant inlet side of the drum of the refrigerant supply pipe.

  The expansion nozzle includes a hemispherical nozzle cap in which a through hole is formed in the center, and the periphery of the through hole is recessed in a concave surface, and a pipe shape that can be fastened to the refrigerant supply pipe. And a body part that is formed to bulge so as to be inserted into the cap.

  The refrigerant supply pipe further includes a pre-cooling section wound so as to be in surface contact with the outer peripheral surface of the refrigerant recovery pipe, and before the refrigerant is supplied to the evaporator, the refrigerant supply pipe and the refrigerant recovery pipe It is preliminarily cooled by the temperature difference of the tube.

  It further includes a temperature sensor unit that measures the temperature of the drum and transmits the measured temperature to a control device that controls the driving of the drum so that the operation start time of the drum can be adjusted. To do.

  The temperature sensor unit is installed on a refrigerant outlet side of the drum of the refrigerant recovery pipe.

  According to the ice making machine cooling system of the present invention, the following effects can be expected.

1. By preliminarily cooling the low-temperature refrigerant recovered by the drum by the preliminary cooling unit, the temperature of the refrigerant supplied to the drum can be stably maintained to improve the ice making quality.
2. By using an expansion nozzle having a simple structure that can be installed by being inserted into the refrigerant pipe, the structure of the system can be simplified and the manufacturing cost can be reduced.
3. By enabling automatic warm-up by drum driving by the temperature sensor unit, the production amount of powder ice can be easily adjusted.

The block diagram which shows roughly the structure of the cooling system for ice makers based on the Example of this invention. The perspective view which shows the structure of the expansion nozzle of the cooling system which concerns on the Example of this invention. The perspective view which shows the structure of the state by which the expansion nozzle of the cooling system which concerns on the Example of this invention was assembled. The perspective view which shows the structure of the preliminary cooling part of the cooling system which concerns on the Example of this invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  In general, a drum-type ice making machine has a tray in which raw materials such as water and drinks are stored at the bottom of a rotating drum. When the drum is cooled, the tray is moved to move the raw material to the outer peripheral surface of the drum. The raw material is cooled and adhered to the drum surface. While the drum rotates, the raw material on the surface is cut by a cutting machine such as a blade and made into the form of powder ice.

  In order to cool the surface of the drum with such a drum type ice making machine, a cooling system for circulating the refrigerant inside the drum is used, and FIG. 1 is a block diagram showing the configuration of the cooling system according to the embodiment of the present invention. Indicated.

  As shown in FIG. 1, the cooling system according to the embodiment of the present invention includes a cooling cycle in which a refrigerant is circulated through a compressor 100, a condenser 200, an expander 300, and an evaporator 400.

  The compressor 100 compressed the refrigerant in a low-pressure gas state into a high-pressure gas refrigerant, and the condenser 200 was cooled by exchanging heat between the high-temperature and high-pressure gas refrigerant from the compressor 100 and the surrounding air. The expander 300 expands the refrigerant from the condenser 200 so that the refrigerant absorbs heat easily by evaporation, and the evaporator 400 is a refrigerant whose pressure is reduced by the expander 300. Is allowed to evaporate to absorb ambient heat and cool.

  The drum 500 receives the supply of the refrigerant through the refrigerant supply pipe 510 and discharges the refrigerant to the outside through the refrigerant recovery pipe 520. The evaporator 400 can be composed of a pipe-type evaporation pipe and a plurality of nozzles formed in the evaporation pipe, and the drum 500 is rapidly cooled by spraying the expanded refrigerant inside the drum 500 and evaporating it. Let On the other hand, the evaporator 400 can also be configured by using an evaporator coil in direct contact with the inner surface of the drum 500 as a refrigerant coil. On the other hand, in the cooling system of the present invention, a dryer 600 may be further used to remove moisture from the refrigerant to prevent leakage and clogging.

  On the other hand, the above-described expander 300 according to the present invention is configured in the form of an expansion nozzle 310 and is inserted and installed on the refrigerant inlet side of the drum 500 of the refrigerant supply pipe 510. The shape of the expansion nozzle 310 is shown in FIG.

  As shown in FIG. 2, the expansion nozzle 310 of the present invention has a through-hole 313 formed in the center, and a hemispherical shape in which the periphery of the through-hole 313 is recessed into a concave surface (the cross-sectional shape of the central portion is an inverted W shape) The nozzle cap 311 and the center portion are in the form of a flange, and both end portions are constituted by a body portion 312 having a screw shape.

  As shown in FIG. 3, the expansion nozzle 310 is used by inserting the nozzle cap 311 into the upper portion of the body portion 312 and assembling it, and inserting and fastening it between the refrigerant supply pipes 510.

  In the conventional ice making machine cooling system, many expansion valves and capillaries are used as the expander 300, but the structure is complicated and expensive, and the ice making machine functions as an expansion valve that opens and closes depending on the temperature. Do not need. Therefore, the expansion nozzle 310 of the present invention, which can be installed by being inserted into the refrigerant pipe in the form of a simple nozzle, is optimized for an ice making machine, and has a simple structure and excellent performance.

  The nozzle cap 311 described above can be formed by plastic processing of a metal material, and is not necessarily limited to the shape shown in FIGS. That is, it is sufficient if it has a through hole 313 and is inserted into the refrigerant supply pipe 510 so that the flow of the refrigerant can be narrowed down. The body portion 312 is not limited to the shape shown in FIGS. 2 and 3, and any structure that can insert and fix the nozzle cap 311 between the refrigerant supply pipes 510 is sufficient. The body portion 312 can be produced exclusively, but a normal piping joint can also be used.

  Next, in the ice making machine cooling system of the present invention, the refrigerant supply pipe 510 includes a preliminary cooling unit 530 that cools in advance before supplying the refrigerant to the evaporator 400. The specific form is shown in FIG.

  The preliminary cooling unit 530 is configured to be wound so as to be in surface contact with the outer peripheral surface of the refrigerant recovery pipe 520 and is supplied to the evaporator 400 due to a temperature difference between the refrigerant supply pipe 510 and the refrigerant recovery pipe 520. The refrigerant before being cooled is cooled in advance.

  In general, in an ice making machine, the temperature of the drum 500 must be lowered to the lowest possible level. Therefore, when a high-temperature refrigerant is supplied to the drum 500, there is a problem that the ice quality is deteriorated. In the present invention, the low-temperature refrigerant recovered by the drum 500 is cooled in advance by the preliminary cooling unit 530, so that the highest ice quality can be maintained.

  In the embodiment of the present invention, the preliminary cooling unit 530 is configured to be wound around the outer peripheral surface of the refrigerant recovery pipe 520, but is not necessarily limited thereto. In other words, other forms of configurations that can cool the refrigerant in the refrigerant supply pipe 510 by bringing the refrigerant supply pipe 510 and the refrigerant recovery pipe 520 into contact with each other can also be applied.

  Next, in the ice making machine cooling system of the present invention, a temperature sensor unit 700 is provided which makes it possible to adjust the operation start time of the drum.

  Such a temperature sensor unit 700 measures the temperature of the drum 500 and transmits the measured temperature to a control device (not shown) that controls the driving of the drum 500. The control device can determine the operating point of the drum 500 based on the temperature measured by the temperature sensor unit 700.

  Such a configuration of the temperature sensor unit 700 enables automatic warm-up of the ice making machine. In other words, the ice making machine is used while being repeatedly started and interrupted, but the temperature of the drum 500 slightly rises when the ice making machine is restarted after the operation. That is, since the temperature of the drum 500 at the start of operation is irregular, it is difficult to produce the same amount of powdered ice at the same time.

  In the present invention, since the temperature of the drum 500 is measured using the temperature sensor unit 700 and the drum 500 reaches a predetermined temperature using this, the tray is raised and production is started. It is easy to produce an amount (for example, one serving) of powdered ice. That is, the production amount can be accurately adjusted by controlling the operation start time and the predetermined operation time according to the measured temperature by the control device.

  The temperature sensor 700 described above is preferably installed on the outer peripheral surface of the drum 500 for accurate temperature measurement, but the installation structure can be complicated. Therefore, in the embodiment of the present invention, as shown in FIG. 1, the temperature sensor unit 700 is installed on the refrigerant outlet side of the drum 500 in the refrigerant recovery pipe 520. Since the relative value of the temperature value measured by the temperature sensor unit 700 is important, even if the temperature sensor unit 700 is installed at a position as shown in FIG. 1, the effect of automatic warm-up is sufficiently achieved. be able to.

  The cooling system of the present invention described above can be optimally applied to an ice making machine, but is not limited thereto, and can be sufficiently applied to other devices having a function similar to that of an ice making machine.

  Although the present invention has been described with reference to the preferred embodiments described above and the accompanying drawings, different embodiments may be constructed within the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims and is not limited by the specific embodiments described herein.

DESCRIPTION OF SYMBOLS 100 Compressor 200 Condenser 300 Expander 310 Expansion nozzle 311 Nozzle cap 312 Body part 313 Through-hole 400 Evaporator 500 Drum 510 Refrigerant supply pipe 520 Refrigerant recovery pipe 530 Precooling part 600 Dryer 700 Temperature sensor part

Claims (5)

A cooling system that cools a drum by circulating a refrigerant in a drum ice maker,
A refrigerant supply pipe for supplying a refrigerant into the drum;
A refrigerant recovery pipe for recovering the refrigerant outside the drum;
A compressor for compressing the refrigerant from the refrigerant recovery pipe at a high pressure;
A condenser for liquefying the refrigerant from the compressor;
An expander that expands and depressurizes the refrigerant from the condenser; and an evaporator that evaporates the refrigerant from the expander inside the drum,
The said expander is formed with the expansion nozzle inserted and installed in the refrigerant | coolant inlet side of the said drum of the said refrigerant | coolant supply pipe | tube. The cooling system for ice makers characterized by the above-mentioned. The expansion nozzle is
A through-hole is formed at the center, and the periphery of the through-hole is formed into a hemispherical nozzle cap recessed in a concave surface, and a pipe shape that can be fastened to the refrigerant supply pipe, and one end is inserted into the nozzle cap to fit together The ice maker cooling system according to claim 1, further comprising: a body part formed so as to swell. The refrigerant supply pipe further includes a pre-cooling section wound so as to be in surface contact with the outer peripheral surface of the refrigerant recovery pipe, and before the refrigerant is supplied to the evaporator, the refrigerant supply pipe and the refrigerant recovery pipe The cooling system for an ice making machine according to claim 1, wherein the cooling system is preliminarily cooled by a temperature difference between the tubes. The temperature sensor unit that measures the temperature of the drum and transmits the measured temperature to a control device that controls the driving of the drum so that the operation start time of the drum can be adjusted. Cooling system for ice machine as described. The ice making machine cooling system according to claim 4, wherein the temperature sensor unit is installed on a refrigerant outlet side of the drum of the refrigerant recovery pipe.

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