KR102572073B1 - Evaporator and refrigerator having the same - Google Patents

Abstract

An evaporator with improved efficiency by changing the arrangement of tubes and the shape of fins and a refrigerator having the same are provided.
A refrigerator includes a main body having a storage compartment and an evaporator provided at the rear of the storage compartment to generate cold air. The tube includes a tube provided on both sides of the evaporator and a plurality of fins coupled to the outer circumferential surface of the tube.

Description

Evaporator and refrigerator having the same {EVAPORATOR AND REFRIGERATOR HAVING THE SAME}

The present invention relates to an evaporator with improved efficiency and a refrigerator having the same.

In general, a refrigerator is a device for keeping food fresh by including a storage compartment and a cold air supply device for supplying cold air to the storage compartment.

The temperature of the storage compartment is maintained within a certain range required to keep food fresh.

The storage compartment of such a refrigerator is provided so that its front surface is opened, and the open front surface is closed by a door to maintain the temperature of the storage compartment at normal times.

The storage compartment is divided into a freezing compartment on the right side and a refrigerating compartment on the left side by a partition wall, and the freezing compartment and the refrigerating compartment are opened and closed by a freezing compartment door and a refrigerating compartment door, respectively.

The inside of the storage compartment is supplied with cold air by a cold air supply device to maintain the temperature. The cold air supply device includes an evaporator that generates cold air, a blower device that induces the cold air generated by the evaporator to be supplied to the storage compartment, and a blower device. and a cold air duct for receiving the cold air induced by the cooling air and discharging it to the storage compartment.

The evaporator includes a tube through which the refrigerant flows and a plurality of fins coupled to the outer circumferential surface of the tube, and the refrigerant absorbs heat from the outside air through heat exchange between the refrigerant flowing inside the tube and the outside air, thereby lowering the temperature of the outside air and providing cold air. let it be created

Accordingly, the efficiency of the evaporator may improve or deteriorate depending on how efficiently heat exchange between the refrigerant and the outside air is performed.

One aspect of the present invention provides an evaporator with improved efficiency by changing the arrangement of tubes and the shape of fins, and a refrigerator having the same.

A refrigerator according to an embodiment of the present invention includes a main body having a storage compartment, and an evaporator provided behind the storage compartment to generate cold air, wherein the evaporator is in a direction opposite to the air flow direction among directions parallel to the air flow direction. A connection pipe through which the refrigerant flows only includes a tube provided on both sides of the evaporator and a plurality of fins coupled to an outer circumferential surface of the tube.

The tube includes an inlet pipe through which the refrigerant flows, an outlet pipe through which the refrigerant flows out, and a plurality of heat exchange pipes to which the plurality of fins are coupled, and the connection pipe may connect the plurality of heat exchange pipes.

The plurality of heat exchange tubes may be provided so that the refrigerant flows in a direction perpendicular to the air flow direction.

The connection tubes include a plurality of first connection tubes connecting the plurality of heat exchange tubes in a direction perpendicular to the air flow direction, and a plurality of second connection tubes connecting the plurality of heat exchange tubes in a direction parallel to the air flow direction. It may contain connectors.

The inlet pipe may be connected to the heat exchange pipe disposed at an upper side in a direction in which air flows among the plurality of heat exchange pipes connected by the first connection pipe.

The outlet pipe may be connected to the heat exchange pipe disposed at a lower side in a direction in which air flows among the plurality of heat exchange pipes connected by the first connection pipe.

The refrigerant introduced into the inlet pipe may flow in the air flow direction through the heat exchange pipe disposed at the upper side and then move in a direction opposite to the air flow direction through the second connection pipe.

The refrigerant moving in a direction opposite to the air flow direction through the second connection pipe may flow through the heat exchange pipe disposed at the lower side in the air flow direction and then flow out through the outlet pipe.

The plurality of fins may be disposed to be spaced apart in a direction perpendicular to a direction in which air flows to form a plurality of air passages.

Each of the plurality of pins may be provided with a plurality of communication holes through which the plurality of air passages communicate with each other.

The plurality of communication holes may be formed by cutting the plurality of pin edges.

A heater is provided below the evaporator, and the heater may be fixed to a bracket coupled to the tube and disposed under the plurality of fins.

A heat conducting portion having a shape corresponding to a portion of an outer circumferential surface of the heater may be provided at a lower end of each of the plurality of fins.

The heater may be accommodated and disposed in the heat conducting part such that a part of the outer circumferential surface of the heater is spaced apart from the heat conducting part.

The heater may be accommodated and disposed in the heat conducting part such that a part of the outer circumferential surface of the heater comes into contact with the heat conducting part.

In addition, a refrigerator according to an embodiment of the present invention includes a main body having a storage compartment, and an evaporator provided behind the storage compartment to generate cold air. The evaporator is coupled to a tube through which a refrigerant flows and an outer circumferential surface of the tube, It includes a plurality of fins spaced apart from each other in a direction perpendicular to the air flow direction so that a plurality of air passages are formed in the flow direction, and each of the plurality of fins has a plurality of communication ports for communicating the plurality of air passages with each other. be prepared

The tube includes a connection pipe for allowing the refrigerant to flow only in a direction opposite to the air flow direction among directions parallel to the air flow direction, and the connection pipe may be provided on both sides of the evaporator.

A heater is provided at the lower part of the evaporator, and a heat conducting part having a shape corresponding to a part of the outer circumferential surface of the heater is provided at the lower end of each of the plurality of fins, and the heater is configured such that a part of the outer circumferential surface of the heater is spaced apart from the heat conducting part. It may be accommodated and disposed in the heat conduction unit.

In addition, an evaporator generating cold air through heat exchange between a refrigerant and air according to an embodiment of the present invention has a direction from the bottom to the top of the evaporator and the evaporator to have a direction opposite to the air flowing from the bottom to the top of the evaporator. Includes a connection pipe for allowing the refrigerant to flow only in a direction from the top to the bottom of the evaporator among the directions from the top to the bottom of the evaporator, wherein the connection pipe is provided on both sides of the evaporator and on the outer circumferential surface of the tube and a plurality of pins coupled and spaced apart in a direction perpendicular to the air flow direction so that a plurality of air passages are formed in the air flow direction, wherein each of the plurality of fins communicates the plurality of air passages with each other. It is provided with a dog communication port.

A heater is provided under the plurality of fins, and a heat conduction part having a shape corresponding to a part of the outer circumferential surface of the heater is provided at the lower end of each of the plurality of fins, and the heater is configured such that a part of the outer circumferential surface of the heater is spaced apart from the heat conduction part. It may be accommodated and disposed in the heat conduction unit.

According to embodiments of the present invention, heat exchange efficiency between a refrigerant flowing inside the tube and external air can be improved.

1 is a perspective view of a refrigerator according to an embodiment of the present invention;
2 is a side cross-sectional view of a refrigerator according to an embodiment of the present invention;
Figure 3 is a perspective view of an evaporator according to an embodiment of the present invention.
Figure 4 is a view showing the flow of refrigerant flowing through the heat exchange tube of the evaporator according to an embodiment of the present invention.
Figure 5 is a view showing the flow of refrigerant flowing through the connection pipe provided on one side of the evaporator according to an embodiment of the present invention.
Figure 6 is a view showing the flow of refrigerant flowing through the connection pipe provided on the other side of the evaporator according to an embodiment of the present invention.
Figure 7 is a perspective view showing a part of the side of the evaporator according to an embodiment of the present invention.
8 is a view showing how air flows through a communication hole according to an embodiment of the present invention.
9 is a perspective view showing a state in which a heater is provided under an evaporator according to an embodiment of the present invention;
10 is a view showing a state in which a part of the outer circumferential surface of a heater according to an embodiment of the present invention is accommodated and arranged in a heat conducting unit so as to be spaced apart from the heat conducting unit.
11 is a view showing a state in which a part of the outer circumferential surface of a heater according to another embodiment of the present invention is accommodated and arranged in a heat conducting unit so as to come into contact with the heat conducting unit.

The embodiments described in this specification and the configurations shown in the drawings are only one preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings in this specification at the time of filing of the present application.

In addition, the same reference numerals or numerals presented in each drawing in this specification indicate parts or components that perform substantially the same function.

In addition, terms used in this specification are used to describe embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “include” or “have” are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It does not preclude in advance the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms including ordinal numbers such as “first” and “second” used herein may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related recited items or any one of a plurality of related recited items.

Meanwhile, the terms "front", "rear", "top", "bottom", "top", and "bottom" used in the following description are defined based on drawings, and by these terms, the shape of each component and location are not limited.

In general, types of refrigerators may be classified according to the shape of a storage compartment and a door.

A TMF (Top Mounted Freezer) type refrigerator in which a storage compartment is partitioned vertically by horizontal bulkheads, with a freezing compartment formed on the upper side and a refrigerating compartment formed on the lower side, and a BMF (Bottom Mounted Freezer) having a refrigerating compartment formed on the upper side and a freezing compartment formed on the lower side. There is a brother refrigerator.

In addition, there is a SBS (Side By Side) type refrigerator in which a storage compartment is divided into left and right sides by vertical partition walls, a freezing compartment is formed on one side, and a refrigerating compartment is formed on the other side. There is a French Door Refrigerator (FDR) type refrigerator in which a freezer compartment is formed on the lower side and the upper refrigerator compartment is opened and closed by a pair of doors.

In this embodiment, for convenience of description, the SBS type refrigerator is described, but is not limited thereto.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a cross-sectional side view of a refrigerator according to an embodiment of the present invention.

As shown in FIGS. 1 and 2, the refrigerator includes a main body 10 forming an exterior, a storage compartment 20 provided so that the front surface is open inside the main body 10, and an open front surface of the storage compartment 20. Hinge module including a door 30 rotatably coupled to the main body 10 to open and close, and an upper hinge 41 and a lower hinge 43 to allow the door 30 to be rotatably coupled to the main body 10 (40).

The main body 10 includes an inner case 11 forming a storage compartment 20 and an outer case 13 forming an exterior, and between the inner case 11 and the outer case 13, leakage of cold air from the storage compartment 20 is prevented. The heat insulating material 15 is foamed so as to do so.

In addition, the main body 10 includes partition walls 17 dividing the storage chamber 20 into left and right refrigerating chambers 21 and freezing chambers 23, and a compressor 51 for compressing refrigerant is installed at the lower rear of the main body 10. A machine room 29 is provided in which a condenser (not shown) for condensing the compressed refrigerant is installed.

The storage chamber 20 is divided into left and right sides by partition walls 17, a refrigerating chamber 21 is provided on the right side of the main body 10, and a freezing chamber 23 is provided on the left side of the main body 10.

A plurality of shelves 25 and storage containers 27 may be provided inside the storage compartment 20 to store food and the like.

The storage compartment 20 is opened and closed by a door 30 rotatably coupled to the main body 10, and the refrigerating compartment 21 and the freezing compartment 23 partitioned left and right by the partition wall 17 are refrigerating compartment doors 31, respectively. and the freezer compartment door 33.

The refrigerating compartment door 31 and the freezing compartment door 33 are connected to a hinge module 40 including an upper hinge 41 provided on the upper part of the main body 10 and a lower hinge 43 provided on the lower part of the main body 10. It can be rotatably coupled to the main body 10 by.

A plurality of door guards 35 are provided on the rear surfaces of the refrigerating chamber door 31 and the freezing chamber door 33 to accommodate food and the like.

The cold air supply device includes a compressor 51 and a condenser installed in the machine room 29, an evaporator 100 installed on the back of the storage compartment 20 to generate cold air, and the cold air generated in the evaporator 100 to the storage compartment 20. ) A blowing fan 53 for inducing supply to the inside and a cold air duct 55 having a plurality of cold air discharge holes 57 for discharging the cold air induced by the blowing fan 53 to the storage compartment 20, and the like can be configured to include

Figure 3 is a perspective view of an evaporator according to an embodiment of the present invention, Figure 4 is a view showing the flow of refrigerant flowing through the heat exchange tube of the evaporator according to an embodiment of the present invention, Figure 5 is an embodiment of the present invention A view showing the flow of refrigerant flowing through a connection pipe provided on one side of an evaporator according to an example, and FIG. 6 is a view showing a flow of refrigerant flowing through a connection pipe provided on the other side of an evaporator according to an embodiment of the present invention. am.

As shown in FIGS. 3 to 6, the evaporator 100 is coupled to the tube 110 through which the refrigerant flows, and the outer circumferential surface of the tube 110, so that heat exchange between the refrigerant flowing through the tube 110 and the outside air is smooth. It includes a plurality of pins 120 to be made.

The tube 110 includes a plurality of tubes in which an inlet pipe 111 through which a refrigerant flows, an outlet pipe 113 through which a refrigerant that enters the tube 110 and exchanges heat with air flows out, and a plurality of fins 120 are coupled. A heat exchange tube 115 and a connection tube 117 connecting the plurality of heat exchange tubes 115 are included.

The tube 110 is preferably formed long to widen the heat exchange area between the refrigerant flowing inside the tube 110 and the outside air. It is possible to efficiently widen the heat exchange area in a limited space.

In the case of the evaporator 100, the liquid refrigerant flowing inside the tube 110 exchanges heat with the outside air to change (expand) to a gaseous state while absorbing heat from the surroundings to lower the temperature of the outside air so that cool air is generated. .

An accumulator 114 for vaporizing the refrigerant flowing out of the tube 110 may be provided in the outlet pipe 113 .

The inlet pipe 111 is connected to the heat exchange pipe 115, and the refrigerant flowing into the inlet pipe 111 is moved to the heat exchange pipe 115.

A plurality of fins 120 are coupled to the outer circumferential surface of the heat exchange tube 115, and the plurality of fins 120 form an air flow path P through which air flowing in a direction from the bottom to the top of the evaporator 100 passes. .

Therefore, when the refrigerant passes through the heat exchange tube 115, the contact area between the external air and the tube 110 is widened by the plurality of fins 120, so that heat exchange with the air passing through the air flow path P is smoothly performed. It can be done.

A plurality of heat exchange tubes 115 are provided and arranged in a direction perpendicular to the direction of movement of the air passing through the evaporator 100 so that the refrigerant flows in a direction perpendicular to the direction in which the air flows.

Three heat exchange tubes 115 may be disposed at the same height in the vertical direction of the evaporator 100 .

The connecting pipe 117 connects the plurality of heat exchange pipes 115 so that the tube 110 has a shape bent several times.

The connection tube 117 includes a plurality of first connection tubes 118 connecting the heat exchange tubes 115 so that the refrigerant flowing inside the plurality of heat exchange tubes 115 can flow in a direction perpendicular to the direction in which air flows, and It includes a plurality of second connection pipes 119 connecting the heat exchange pipes 115 so that the refrigerant flowing inside the two heat exchange pipes 115 can flow in a direction parallel to the direction in which the air flows.

The first connection pipe 118 and the second connection pipe 119 may be arranged to be provided on both left and right sides of the evaporator 100 .

Therefore, two first connection pipes 118 are provided at the same height in the vertical direction of the evaporator 100, and one each is provided on both sides of the evaporator 100 to connect the three heat exchange pipes 115.

In addition, the heat exchange tubes 115 arranged to have different heights in the vertical direction of the evaporator 100 are connected by the second connection tube 119.

Among the three heat exchange tubes 115 disposed at the same height in the vertical direction of the evaporator 100, two heat exchange tubes 115 are connected by a first connection tube 118, and the other one is connected by a second connection tube 119. ), the refrigerant flows through the three heat exchange tubes 115 arranged at the same height in the vertical direction of the evaporator 100, and then moves downward through the second connection tube 119.

The refrigerant moved in the lower direction of the evaporator 100 by the second connection pipe 119 passes through all of the plurality of other heat exchange pipes 115 located at the same height in the vertical direction of the evaporator 100, and then another It moves in the lower direction of the evaporator 100 by the second connection pipe 119.

Therefore, the refrigerant introduced through the inlet pipe 111 passes through all of the plurality of heat exchange pipes 115 located at the same height in the vertical direction of the evaporator 100, and then moves in the downward direction of the evaporator 100. is repeated to flow through a plurality of heat exchange tubes 115 located at the lowest height in the vertical direction of the evaporator 100.

A plurality of heat exchange tubes 115 positioned at the lowest height in the vertical direction of the evaporator 100 are connected to the outlet tube 113 so that the refrigerant flows out through the outlet tube 113 .

Since the refrigerant flows from the top to the bottom in the vertical direction of the evaporator 100, it has a direction opposite to the flow of air passing through the evaporator 100, so that heat exchange efficiency between the refrigerant and external air can be improved.

7 is a perspective view showing a part of the side of an evaporator according to an embodiment of the present invention, and FIG. 8 is a view showing how air flows through a communication hole according to an embodiment of the present invention.

As shown in FIGS. 3 and 7 to 8, the plurality of fins 120 provided are coupled to the outer circumferential surface of the tube 110 so that the contact area between the tube 110 and the outside air is widened so that the tube 110 It ensures efficient heat exchange between the refrigerant passing through the inside and the outside air.

The plurality of fins 120 may be made of various metal materials including aluminum having high thermal conductivity.

The plurality of fins 120 are arranged to be spaced apart in the left-right direction of the evaporator 100, which is a direction perpendicular to the direction in which air flows, to form a plurality of air passages P.

The narrower the distance between the plurality of pins 120, the greater the number of pins 120 can be placed. However, when the distance becomes too narrow, it acts as resistance to the air passing through the evaporator 100, resulting in pressure loss. There is a concern, so it is necessary to adjust the interval appropriately.

Each of the plurality of pins 120 is provided to have a plurality of communication holes 121 communicating the plurality of air passages P to each other.

The plurality of communication holes 121 are formed on the edges of each of the plurality of pins 120, and may be formed by cutting the edges of each of the plurality of pins 120.

Since a plurality of communication ports 121 are formed on each of the plurality of fins 120 and the plurality of air passages P communicate with each other, the air passing through the plurality of air passages P passes through the plurality of communication holes 121 The heat exchange between the refrigerant flowing inside the tube 110 and the outside air can be performed more efficiently.

9 is a perspective view showing a state in which a heater is provided under an evaporator according to an embodiment of the present invention, and FIG. 10 is a portion of the outer circumferential surface of the heater according to an embodiment of the present invention accommodated in the heat conduction unit so as to be spaced apart from the heat conduction unit. FIG. 11 is a view showing a state in which a heater according to another embodiment of the present invention is accommodated and arranged in a heat conducting part such that a part of the outer circumferential surface contacts the heat conducting part.

9 to 10, a heater 60 is provided at the bottom of the evaporator 100, and the heater 60 is not directly coupled to the plurality of fins 120, but coupled to the tube 110 It is fixed to the bracket 70 and is disposed under the plurality of pins 120.

The heater 60 provided at the lower part of the evaporator 100 is provided to remove frost generated in the evaporator 100, and transfers heat from the lower part of the evaporator 100 to a plurality of fins 120 so that the evaporator 100 ) to remove the frost generated.

A heat conducting part 123 having a shape corresponding to a part of the outer circumferential surface of the heater 60 is provided at the lower end of each of the plurality of fins 120 .

The heat conduction unit 123 is provided at a position corresponding to the heater 60 located at the lower end of the plurality of fins 120, and a portion of the outer circumferential surface of the heater 60 fixed to the bracket 70 is constant with the heat conduction unit 123. They are accommodated and disposed inside the heat conducting part 123 so as to be spaced apart.

Since the heater 60 is accommodated and disposed in the heat conduction unit 123, an area in which heat can be conducted between the heater 60 and the fin 120 is widened, thereby improving defrosting efficiency by the heater 60. can

As shown in FIG. 11 , the heater 60 may be disposed inside the heat conducting part 123 such that a part of its outer circumferential surface comes into contact with the heat conducting part 123 .

When the heater 60 is placed in contact with the heat conduction unit 123, the contact area between the heater 60 and the fin 120 is widened so that the heat of the heater 60 is efficiently conducted through the plurality of fins 120. Therefore, defrosting efficiency by the heater 60 can be improved.

In the above description of the evaporator and the refrigerator having the evaporator with reference to the accompanying drawings, the specific shape and direction have been mainly described, but various modifications and changes are possible by those skilled in the art, and these modifications and changes are within the scope of the present invention. should be construed as being included in

10: main body 11: inner box
13: outer box 15: insulation
17: bulkhead
20: storage compartment 21: refrigerator compartment
23: freezer 25: shelf
27: storage container 29: machine room
30: door 31: refrigerator compartment door
33: freezer door 35: door guard
40: hinge module 41: upper hinge
43: lower hinge
51: compressor 53: blowing fan
55: cold air duct 57: cold air discharge hole
60: heater 70: bracket
100: evaporator
110: tube 111: inlet pipe
113: outflow pipe 114: accumulator
115: heat exchange pipe 117: connector pipe
118: first connector 119: second connector
120: pin
121: communication port 123: heat conduction unit
P: Air flow path

Claims (20)

a main body having a storage compartment;
An evaporator provided at the rear of the storage compartment to generate cold air,
the evaporator,
Tubes provided on both sides of the evaporator so that the refrigerant flows only in a direction opposite to the air flow direction among directions parallel to the air flow direction; and
A plurality of pins coupled to the outer circumferential surface of the tube; including,
The tube includes an inlet pipe through which the refrigerant flows, an outlet pipe through which the refrigerant flows out, and a plurality of heat exchange pipes to which the plurality of fins are coupled, and the connection pipe connects the plurality of heat exchange pipes,
The connection tubes include a plurality of first connection tubes connecting the plurality of heat exchange tubes in a direction perpendicular to the air flow direction, and a plurality of second connection tubes connecting the plurality of heat exchange tubes in a direction parallel to the air flow direction. including connectors,
The inlet pipe is connected to the heat exchange pipe disposed on the upper side in the direction in which air flows among the plurality of heat exchange pipes connected by the first connection pipe, and the outlet pipe is connected to the heat exchange pipe by the first connection pipe. It is connected to the heat exchange tube disposed on the lower side in the direction in which air flows among the plurality of heat exchange tubes,
The refrigerant introduced through the inlet pipe passes through all of the plurality of heat exchange pipes located at the same height in the direction of air flow, and then passes through the second connection pipe to the plurality of heat exchange pipes disposed at the lower side in the direction of air flow. A refrigerator arranged to flow through heat exchange tubes. delete delete delete delete delete According to claim 1,
The refrigerator of claim 1 , wherein the refrigerant introduced into the inlet pipe flows through the heat exchange pipe disposed at an upper side in a direction in which the air flows, and then moves in a direction opposite to the direction in which the air flows through the second connection pipe. According to claim 7,
Refrigerant moving in a direction opposite to the air flow direction through the second connection pipe flows through the heat exchange tube disposed at the lower side in the air flow direction, and then flows out through the outlet pipe. According to claim 1,
The plurality of fins are arranged to be spaced apart in a direction perpendicular to a direction in which air flows to form a plurality of air passages. According to claim 9,
Each of the plurality of fins is provided to have a plurality of communication ports through which the plurality of air passages communicate with each other. ◈Claim 11 was abandoned when the registration fee was paid.◈ According to claim 10,
The plurality of communication ports are formed by cutting the plurality of pin edges. According to claim 1,
A heater is provided below the evaporator, and the heater is fixed to a bracket coupled to the tube and disposed below the plurality of fins. According to claim 12,
A refrigerator having a heat conduction part having a shape corresponding to a part of an outer circumferential surface of the heater at a lower end of each of the plurality of fins. According to claim 13,
The heater is accommodated in the heat conducting part so that a part of the outer circumferential surface of the heater is spaced apart from the heat conducting part. ◈Claim 15 was abandoned when the registration fee was paid.◈ According to claim 13,
The refrigerator is accommodated in the heat conducting part so that a part of the outer circumferential surface of the heater comes into contact with the heat conducting part. ◈Claim 16 was abandoned when the registration fee was paid.◈ a main body having a storage compartment;
An evaporator provided at the rear of the storage compartment to generate cold air,
the evaporator,
tube through which the refrigerant flows; and
fins coupled to the outer circumferential surface of the tube and spaced apart from each other in a direction perpendicular to the air flow direction to form a plurality of air passages in the air flow direction; Including,
Each of the plurality of pins is provided to have a plurality of communication ports for communicating the plurality of air passages with each other,
The tube includes an inlet pipe through which the refrigerant flows, an outlet pipe through which the refrigerant flows out, a plurality of heat exchange pipes to which the plurality of fins are coupled, and a plurality of heat exchange pipes connected in a direction perpendicular to the air flow direction. It includes a plurality of first connection pipes and a plurality of second connection pipes connecting the plurality of heat exchange pipes in a direction parallel to a direction in which air flows,
The inlet pipe is connected to the heat exchange pipe disposed on the upper side in the direction in which air flows among the plurality of heat exchange pipes connected by the first connection pipe, and the outlet pipe is connected to the heat exchange pipe by the first connection pipe. It is connected to the heat exchange tube disposed on the lower side in the direction in which air flows among the plurality of heat exchange tubes,
The refrigerant introduced through the inlet pipe passes through all of the plurality of heat exchange pipes located at the same height in the direction of air flow, and then passes through the second connection pipe to the plurality of heat exchange pipes disposed at the lower side in the direction of air flow. A refrigerator arranged to flow through heat exchange tubes. ◈Claim 17 was abandoned when the registration fee was paid.◈ 17. The method of claim 16,
The tube includes a connection pipe for allowing the refrigerant to flow only in a direction opposite to the air flow direction among directions parallel to the air flow direction, and the connection pipe is provided on both sides of the evaporator. ◈Claim 18 was abandoned when the registration fee was paid.◈ 17. The method of claim 16,
A heater is provided at the lower part of the evaporator, and a heat conducting part having a shape corresponding to a part of the outer circumferential surface of the heater is provided at the lower end of each of the plurality of fins, and the heater is configured such that a part of the outer circumferential surface of the heater is spaced apart from the heat conducting part. A refrigerator accommodated and disposed in the heat conduction unit. In the evaporator for generating cold air through heat exchange between the refrigerant and the air,
The refrigerant flows only in the direction from the top to the bottom of the evaporator among the direction from the bottom to the top of the evaporator and the direction from the top to the bottom of the evaporator to have a direction opposite to the air flowing from the bottom to the top of the evaporator. A tube provided on both sides of the evaporator; and
fins coupled to the outer circumferential surface of the tube and spaced apart from each other in a direction perpendicular to the air flow direction to form a plurality of air passages in the air flow direction; Including,
Each of the plurality of pins is provided to have a plurality of communication ports for communicating the plurality of air passages with each other,
The tube includes an inlet pipe through which the refrigerant flows, an outlet pipe through which the refrigerant flows out, a plurality of heat exchange pipes to which the plurality of fins are coupled, and a plurality of heat exchange pipes connected in a direction perpendicular to the air flow direction. It includes a plurality of first connection pipes and a plurality of second connection pipes connecting the plurality of heat exchange pipes in a direction parallel to a direction in which air flows,
The inlet pipe is connected to the heat exchange pipe disposed on the upper side in the direction in which air flows among the plurality of heat exchange pipes connected by the first connection pipe, and the outlet pipe is connected to the heat exchange pipe by the first connection pipe. It is connected to the heat exchange tube disposed on the lower side in the direction in which air flows among the plurality of heat exchange tubes,
The refrigerant introduced through the inlet pipe passes through all of the plurality of heat exchange pipes located at the same height in the direction of air flow, and then passes through the second connection pipe to the plurality of heat exchange pipes disposed at the lower side in the direction of air flow. An evaporator arranged to flow through heat exchange tubes. According to claim 19,
A heater is provided under the plurality of fins, and a heat conduction part having a shape corresponding to a part of the outer circumferential surface of the heater is provided at the lower end of each of the plurality of fins, and the heater is configured such that a part of the outer circumferential surface of the heater is spaced apart from the heat conduction part. An evaporator accommodated and disposed in the heat conducting part.

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