KR20180063000A - Cold storage system - Google Patents

Abstract

Disclosed is an ice storage type refrigerating and freezing system. According to one aspect of the present invention, the system comprises: ice storage modules facing each other; and a cooling tube disposed between the ice storage modules and coming in contact with the ice storage modules. The cooling tube has a unit cooling tube, which can have horizontal cooling tubes and an inclined cooling tube disposed to be inclined while connecting the horizontal cooling tubes to each other.

Description

[0001] COLD STORAGE SYSTEM [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice-cooled refrigeration refrigeration system, and more particularly, to a refrigeration refrigeration system having a simple structure and excellent efficiency.

The cold storage refrigeration refrigeration system refers to a refrigeration or refrigeration system using a cold storage material (phase change material - PCM (Phase Change Material)) instead of a refrigeration system having a general refrigeration system. The cold storage refrigeration refrigeration system is a device for keeping cold storage at a low temperature by storing cold heat in a refrigeration module containing a phase change material (cold storage material). In the cold-storage refrigeration system, at least one or more constriction units are disposed at regular intervals, and a cooling pipe connected to the refrigeration apparatus is installed in each of the condensed cooling units so as to pass through the cooling pipes. The cooling tube is connected to the refrigerating device and is installed so that cold refrigerant flows.

The cold storage refrigeration refrigeration system can maintain a stable refrigerating temperature and save energy because the on-off cycle of the motor is reduced by the operation of a uniform refrigeration system. Also, the cold storage refrigeration system can reduce the operation cost by operating the refrigerator at night by using the low-priced nighttime power, and it is also advantageous in that the refrigerator can be operated in the designated daytime even during the daytime operation. In particular, the cold storage refrigeration refrigeration system can maintain the refrigeration temperature for a certain period of time even during a power failure or a failure of the refrigerating apparatus, thereby maintaining the freshness of the refrigerated or frozen product.

Since cold air is transferred from the cooling pipe to the cooling unit, it is important that the cooling air is transmitted efficiently. That is, in a cold storage refrigeration refrigeration system, it is required to reduce the cooling time and cost by maximizing the heat transfer amount between the cooling pipe and the cooling unit.

Korean Patent No. 1604974 discloses a cold-formed cold storage refrigeration system in which a heat conduction plate made of a metal material is provided to reduce contact thermal resistance between a cooling pipe and a cold-storage module. Such a thermally conductive plate is positioned between the cooling tube and the cooling module and serves to reduce the thermal resistance by surface contact.

However, the provision of the heat conduction plate increases the number of components and adds a process for fixing the heat conduction plate.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a cooling-type refrigeration refrigeration system that is simple in construction and excellent in efficiency.

Other objects of the present invention will become more apparent through the embodiments described below.

An aspect of the present invention provides an air-cooled refrigerating and freezing system, comprising: a water-cooled cooling unit that is opposed to each other and a cooling pipe that is positioned between the water- May include a horizontal cooling tube and an inclined cooling tube that interconnects the horizontal cooling tube and is disposed obliquely.

The cold storage refrigeration system according to the present invention may include one or more of the following embodiments. For example, the end of the unit cooling tube can be connected to the connection cooling tube.

The cooling tube is coupled to the frame, and the frame has a horizontal frame and a vertical frame, the horizontal frame having an engaging groove into which the connecting cooling tube is inserted, and the vertical frame, .

The cross section of the cooling pipe may have an elliptical shape.

A case having an inlet and an outlet, a partition wall partitioned into an inflow space and an outflow space, the partition being divided into an inflow space and an outflow space, and a constriction unit disposed in the inflow space and the inflow space, respectively, The air introduced through the inlet is cooled while flowing from the upper part to the lower part of the constricting part located in the inflow space and is moved to the outflow space. The air in the outflow space is cooled while flowing from the lower part to the upper part of the constriction part located in the outflow space And can be discharged to the outside of the case through the outlet.

The inlet and the outlet may be respectively formed on the upper part of the case.

The present invention can provide a cold-formed refrigeration refrigeration system that is simple in construction and excellent in efficiency.

1 is a perspective view illustrating an ice-cooled refrigeration refrigeration system according to an embodiment of the present invention.
FIG. 2 is a front view illustrating the cold-water refrigeration refrigeration system illustrated in FIG. 1;
3 is a perspective view illustrating the arrangement of the cooling pipes.
Figure 4 is a front view of the cooling tube illustrated in Figure 3;
5 is a view illustrating a unit cooling pipe.
6 is a cross-sectional view illustrating a state in which a cooling pipe is disposed between the water cooling modules.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout the specification and claims. The description will be omitted.

FIG. 1 is a perspective view illustrating an ice-cooled refrigeration and freezing system 100 according to an embodiment of the present invention, and FIG. 2 is a front view of a refrigeration and freezing system 100 illustrated in FIG. In FIG. 2, the refrigerating device 150 is omitted, and the air flow is indicated by an arrow in FIGS. 1 and 2. FIG.

1 and 2, an ice-cooled refrigeration and freezing system 100 according to an embodiment of the present invention includes a case 120 positioned inside a freezing space (not shown) Which is provided in the case 120 to divide the internal space of the case 120 into an inflow space 170 and an outflow space 175, A partition 140 and a refrigerating device 150 for cooling the refrigerating unit 130 while being positioned outside the freezing space. The cold storage unit 130 is composed of a plurality of cold storage modules 132 (see FIG. 6), and a cooling pipe 160 is provided between a pair of adjacent cold storage modules 132

The case 120 accommodates the refrigerating portion 130 in the interior thereof and includes a suction port 122 through which the air in the freezing space 112 flows and a suction fan 122 disposed in the suction port 122, An outlet 126 through which the air cooled by the cold storage unit 130 is discharged and a support table 128 which supports the cold storage unit 130 at a predetermined height from the bottom of the case 120 .

Two suction ports 122 are disposed at the center of the upper portion of the case 120, and a suction fan 124 for forcedly sucking air is provided in front of the suction port 122. The air introduced into the case 120 through the inlet port 122 flows downward from the upper portion of the inlet space 170 divided by the partition 140 and then flows into the lower portion of the outlet space 175, (126). In this process, the air is respectively cooled by the cold storage portion 130 located in the inflow space 170 and the outflow space 175, respectively.

The outflow ports 126 are formed on the left and right sides of the upper portion of the case 120, respectively, and are formed one on top of the two outflow spaces 175, respectively. The air cooled by the cooling unit 130 through the outlet 126 is discharged to the outside of the case 120 to cool the freezing space.

The cooling and cooling system 100 according to the present embodiment has the inflow space 170 at the center and the inflow space 175 at the left and right sides of the inflow space 170. However, The air may flow in the opposite direction inside the case 120 at this time. Although the ice-cooled refrigeration and freezing system 100 according to the present embodiment has two intake ports 122 and an outlet port 126, it is also possible to provide one or more intake ports 122 and an outlet port 126 Of course.

The support base 128 provided at the lower portion of the case 120 has a constant height on the bottom surface of the case 120. 2, the inflow space 170 and the outflow space 175 defined by the barrier ribs 140 are formed in the case (not shown) because the partition wall 140 is not formed in the lower part of the case 120. Therefore, 120 at the lower end thereof.

The cold storage unit 130 has a plate shape, and a plurality of the cooling units 132 are coupled to each other to form one cooling unit 130. One cold storage unit 130 is composed of two cold storage modules 132 in the transverse direction and four cooling units 132 in the vertical direction, And a module 132. In addition, it can be seen that three cold coolers 130 are arranged at a predetermined interval in the case 120. [

It goes without saying that the numbers of the constriction modules 132 and the cold storage units 130 may vary depending on the load conditions of the environment in which the cooling and cooling system 100 is used.

The cooling and cooling modules 132 are disposed opposite to each other, and a cooling pipe 160 is disposed therebetween (see FIG. 6). The cooling pipe 160 cools the cooling and cooling module 132 while contacting the adjacent cooling and cooling modules 132, respectively.

A phase change material (PCM) is provided in each of the cooling and cooling modules 132 forming the cold storage part 130. The phase change material generates a large amount of latent heat while maintaining various intrinsic freezing point temperatures constantly in a phase change from liquid to solid or from solid to liquid depending on the temperature. The quench module 132 may utilize a variety of phase change materials from -40 ° C to + 60 ° C.

The cooling unit 130 is cooled by the cooling unit 150 to have a constant cooling capacity. The cooling pipe 160 of the refrigerating apparatus 150 cools the phase change material provided inside the cooling unit 132 while flowing from the upper part to the lower part or from the lower part to the upper part in the left and right width direction of the cooling part 130.

The cold storage part 130 is divided into one inflow space 170 and two outflow spaces 175 by a partition wall 140 formed inside the case 120. Accordingly, the middle portion of the cooling unit 130 is positioned in one inflow space 170, and the left and right portions of the cooling unit 130 are positioned in the respective outflow spaces 175 located on the left and right sides. The partition wall 140 does not block the interior of the cooling and cooling module 132 but is disposed in close contact with the outside of the refrigerated portion 130 so that only the space of the case 120 is filled with the inflow space 170 and the outflow space 175 Separate. Therefore, since the a portion and the d portion of the cold storage portion 130 are thermally connected, it is possible to replenish the cold portion, which has been relatively taken away at the portion a on the side of the intake port 122, with the cold portion of the portion d. Also, since the b portion and the c portion of the cold storage portion 130 are also thermally connected, the cool air that has been relatively taken away from the portion b can be replenished with the cold portion of the c portion.

Of course, the cold portion 130 may be thermally connected to portions a, b, c, and d.

In the inflow space 170, the inflow air is cooled while flowing from the upper end (a portion) to the lower end (portion b) of the refrigerated portion 130. The cooled air that has exited the inflow space 170 is once again cooled in the outflow space 175 as it flows from the lower end (c portion) to the upper end (d portion) of the refrigerated portion 130. The temperature of the air sucked from the upper end (a portion) to the lower end (b portion) of the inflow space 170 and from the lower end (c portion) of the outflow space 175 to the upper end (d portion) (I.e., T _a > T _b > T _c > T _d ).

The portion a located in the inflow space 170 flows at the highest temperature T _a and the portion d located in the outflow space 175 flows at the lowest temperature T _d , Air flows. At a lower portion of the cold storage portion 130, air having a temperature T _b flows into the portion b located in the inflow space 170 and air having a temperature T _c flows into the portion c located in the outflow space 175. Therefore, since the heat transfer rate at the portions a to d is satisfactory as q _a > q _b > q _c > q _d , the heat exchange amount generated at the upper portion (a portion and d portion) And the amount of heat exchange generated in the lower part (part b and part c) of the cold part 130 is balanced to some extent. This can solve the problem that the upper portion (portion a and portion d) melt earlier than the lower portion (portions b and c) of the cold storage portion 130.

The partition wall 140 divides an internal space of the case 120 into an inflow space 170 and an outflow space 175 and has two identical shapes.

The barrier ribs 140 are formed in close contact with the outer surface of the cooling portion 130. The other edge of the partition wall 140 excluding the lower end is closely contacted with the inner surface of the case 120. The edge of the lower end of the partition 120 is spaced apart from the bottom surface of the case 120 by a predetermined height. Therefore, the air flowing from the upper end to the lower end of the cold storage part 130 in the inflow space 170 is prevented from flowing out to the inflow space 175 on the way. The air flowing inside the case 120 flows from the upper end to the lower end of the inflow space 170 and then flows into the outflow space 175 through the passage formed in the bottom portion of the case 120.

The suction port (122) and the outlet port (126) are separated from each other by the partition wall (140).

The refrigeration apparatus 150 includes a compressor 152, a condenser 154, a receiver 156, an expansion valve 158, and a cooling pipe 160 for freezing and cooling the cold storage unit 130 to a predetermined temperature . Since the refrigerating device 150 corresponds to a general refrigerating system, a detailed description thereof will be omitted.

The refrigerant cooled by the refrigerating device (150) flows into the cooling pipe (160). The cooling pipes 160 are arranged in the left-right direction and the vertical direction of the cooling unit 130. Accordingly, the low-temperature refrigerant flowing in the cooling pipe 160 cools the entirety of the refrigerating portion 130, and then flows into the refrigerating device 150 again.

Fig. 3 is a perspective view illustrating the arrangement of the cooling tube 160, and Fig. 4 is a front view of the cooling tube 160 illustrated in Fig. 5 is a view illustrating a unit cooling pipe 161 and FIG. 6 is a sectional view illustrating a state in which a cooling pipe 160 is disposed between the cooling and cooling modules 132. FIG. 6 is a cross-sectional view with respect to the vertical frame 186. As shown in FIG.

Referring to FIGS. 3 to 6, the cooling pipe 160 of the ice-cooled refrigeration system 100 according to the present embodiment has a structure in which a plurality of cooling pipes 160 are connected to each other inside the frame 180. The cooling pipe 160 includes a plurality of unit cooling pipes 161 and a connection cooling pipe 166.

The unit cooling pipe 161 is composed of two horizontal cooling pipes 162 and one inclined cooling pipe 164.

The horizontal cooling pipe 162 is horizontally positioned with respect to the frame 180 and is coupled to both ends of the inclined cooling pipe 164 by U-shaped connecting members 163. In the unit cooling pipe 161, the two horizontal cooling pipes 162 are arranged at regular intervals in parallel with each other by the inclined cooling pipe 164. The horizontal cooling pipe 162 located at the top of the first layer (a) of the frame 180 among the horizontal cooling pipes 162 is connected to the inlet 162a. And a horizontal cooling pipe 162 located at the lowermost portion of the fourth layer (d) of the frame 180 among the horizontal cooling pipe 162 is connected to the outlet 162b. The refrigerant flows into the inflow portion 162a, flows continuously through the cooling pipe 160, and then is discharged to the outflow portion 162b.

The horizontal cooling pipe 162 of the unit cooling pipe 161 is connected to the horizontal cooling pipe 162 of the adjacent unit cooling pipe 161. And unit cooling tubes 161 located in different layers (exemplified by four layers a, b, c, and d) in the frame 180 can be interconnected by a U-shaped connection cooling tube 166 . Both ends of the connection cooling pipe 166 are connected to the horizontal cooling pipe 162 of the unit cooling pipe 161, respectively. And the connection cooling pipe 166 can be inserted and fixed in the coupling groove 184 of the horizontal frame 182.

The inclined cooling pipe 164 is disposed obliquely to the two horizontal cooling pipes 162 positioned in parallel to each other and serves to connect the horizontal cooling pipe 162. Since the inclined cooling pipes 164 are disposed at an inclination angle other than horizontal, the number of the cooling pipes 160 that can be disposed within the same area increases. As a result, the contact area of the cooling pipe 160 with respect to the ice-cooling module 132 increases, and as a result, the ice-cooling module 132 can be efficiently cooled.

Particularly, the ice-cooled cooling and refrigerating system 100 according to the present embodiment is provided with a part of the cooling pipe 160 (the inclined cooling pipe 164) in an inclined manner without providing a separate heat conduction plate (not shown) Thereby increasing the heat transfer efficiency by increasing the contact area. Thus, the ice-cooled refrigeration and freezing system 100 according to the present embodiment can have a high efficiency with a simple configuration.

The cross section of the unit cooling pipe 161 and the connection cooling pipe 166 constituting the cooling pipe 160 may have various shapes such as a circular shape or an elliptical shape. Particularly, when the cross section of the cooling pipe 160 has an elliptical shape, the area of contact with the cooling unit 132 increases and the amount of heat transfer increases. Therefore, the cooling water flowing from the low- 132 to efficiently transmit cold air.

The frame 180 serves to fix a plurality of unit cooling pipes 161 and a cooling pipe 160 to which the connection cooling pipes 166 are connected in series. The frame 180 has a generally rectangular shape and consists of a horizontal frame 182 and a vertical frame 186.

The horizontal frame 182 is disposed in parallel with the horizontal cooling pipe 162 of the unit cooling pipe 161. The frame 180 is separated into the respective layers by the horizontal frame 182. In this embodiment, the frame 180 is divided into the first layer a, the second layer b, the third layer c, Layer (d). ≪ / RTI > A vertical frame 186 is positioned at the center of each layer a, b, c, d. For this reason, the frame 180 according to the present embodiment can be divided into eight sections (not shown) having the same size and shape, and the front and rear surfaces of each section, as illustrated in FIG. 6, (132) may be disposed in contact with the cooling pipe (160).

At both ends of the horizontal frame 182, coupling grooves 184 are formed. One of the two coupling grooves 184 may be inserted with a connection cooling tube 166 to be fixed in position. And one end of the connection cooling pipe 166 can be inserted into the vertical frame 186 and fixed in position.

In the vertical frame 186, the end of the horizontal cooling pipe 162 is joined and fixed. Thus, the vertical frame 186 is engaged with the horizontal cooling pipe 162 and the connection cooling pipe 166, thereby functioning to fix the cooling pipe 160 as a whole.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

100: Cooling-type refrigeration system
120: Case 130:
132: Cooling module 150: Refrigeration unit
160: cooling pipe 161: unit cooling pipe
162: horizontal cooling pipe 164: inclined cooling pipe
166: connection cooling tube 180: frame
182: Horizontal frame 184: Coupling groove
186: Vertical frame

Claims (4)

A casing having a suction port and an outlet formed thereon, a suction fan for sucking indoor air into the casing, and a condensing module disposed inside the casing to receive the phase change material, and a cooling pipe Wherein the cooling system comprises:
Wherein the cooling pipe includes a plurality of unit cooling pipes positioned between the cooling units and contacting the cooling unit, and a connection cooling pipe connecting the unit cooling pipes,
Wherein the unit cooling pipe comprises two horizontal cooling pipes arranged at regular intervals and an inclined cooling pipe arranged between the horizontal cooling pipes so as to be inclined upward with respect to the flow direction of the coolant, And a connecting member for connecting an end of the cooling pipe,
In the unit cooling pipe, the coolant flows in the first horizontal direction through the horizontal cooling pipe located at the upper part, flows in the upward slope direction through the inclined cooling pipe, passes through the horizontal cooling pipe at the lower part, Flowing in a second, opposite direction. The method according to claim 1,
Wherein the unit cooling pipe and the connection cooling pipe have an elliptical cross section and a portion having a large radius of curvature is disposed in contact with the cooling unit so as to increase a heat transfer area with the cooling unit. 3. The method according to claim 1 or 2,
And a partition wall installed in the case and dividing the inside of the case into an inflow space and an outflow space,
The air introduced through the suction port is cooled down from the upper portion to the lower portion of the constricted portion located in the inflow space and moved to the outflow space,
Wherein the air in the outflow space is cooled while flowing from the lower part to the upper part of the constriction part located in the outflow space and discharged to the outside of the case through the outflow opening. The method of claim 3,
Wherein the inlet and the outlet are formed on an upper portion of the case, respectively.

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