KR101699473B1

KR101699473B1 - Heat exchanger for refrigerating and cooling

Info

Publication number: KR101699473B1
Application number: KR1020150084932A
Authority: KR
Inventors: 이영웅; 인 이
Original assignee: 이영웅
Priority date: 2015-06-16
Filing date: 2015-06-16
Publication date: 2017-01-25
Also published as: KR20160148226A

Abstract

The present invention relates to a heat exchanger for a refrigerator and a refrigerator in which the structure of the condenser in a heat exchanger used for refrigeration and freezing of a refrigerator, a cold water heater, a water purifier, a Kimchi refrigerator, A second refrigerant pipe connected to the refrigerant discharge pipe for discharging the cooled refrigerant, a connection pipe connecting the first refrigerant pipe and the second refrigerant pipe, a first refrigerant pipe connected to the first refrigerant pipe, And a second cooling pipe connected to the second refrigerant pipe, wherein the first refrigerant pipe and the first cooling pipe are connected in a cross shape, and the second refrigerant pipe and the second cooling pipe are connected in a cross- So that the heat exchange can be maximized.

Description

[0001] Heat exchanger for refrigerating and freezing [

The present invention relates to a heat exchanger for a refrigerator and a refrigerator, and more particularly to a refrigerator and a refrigerator having a miniaturized structure of a condenser in a heat exchanger used for refrigeration and freezing of a refrigerator, a cold / hot water machine, a water purifier, Heat exchanger.

Generally, there are refrigerators, heat pumps, air conditioners and the like in a refrigeration and air-conditioning apparatus to which a heat exchanger which is frequently in contact with the surroundings is applied. Particularly, in the refrigerator room or the freezer compartment of the refrigerator, an evaporator that performs heat exchange between the refrigerant and the air is provided, and a condenser is included in the rear lower machine room of the refrigerator. The heat exchanging ability of the evaporator or the condenser greatly affects the cycle performance of the refrigerator. If the heat exchanging efficiency of the condenser is excellent, the condensing efficiency can be increased and the overall refrigerating cycle efficiency is increased. In the case of the evaporator, Thereby further improving the performance.

Conventionally, a fin plate type, a wire condenser type or a pin core type heat exchanger has been mainly employed as a heat exchanger of a refrigerator or an air conditioner.

The fin-plate type heat exchanger is a method in which a plate pin is inserted into a core of a copper material in a lamination manner and the copper tube is expanded and joined in a press form, and a U-shaped tube is used for the bending position between the tube arrangements. The fin plate type heat exchanger is disadvantageous in terms of process complexity and durability of the product, resulting in poor workability. Particularly, since it is manufactured through a multi-step process, the productivity is lowered, and the leak limit of the refrigerant by the U-shaped bending welded portion is also limited. Leakage of refrigerant can be said to be critical to the maintenance of the air conditioning equipment.

The wire condenser type heat exchanger is mainly used in the condenser of the refrigerator. The tube is bent into a box shape, and the surface is electrodeposited. However, the wire condenser type heat exchanger is advantageous in manufacturing, but has a disadvantage in that the heat transfer area is lower than that of other heat exchangers, and the heat radiation performance is lowered, and there is a disadvantage that the electroplated coating contaminates the environment and can not be recycled at all.

The pin-core type heat exchanger is a heat exchanger formed by cutting the outer diameter of the tube to a predetermined depth, raising the cut-out portion at a predetermined angle, and making the heat-dissipating fin. The radiating fins may have a spiral shape depending on the application. The pin-core type heat exchanger is disadvantageous in that a separate cutting process must be included because the tube and the spiral fin are integrally formed. In addition, the production process is complicated and the productivity is lowered, and a complicated manufacturing apparatus is used. In addition, depending on the intended use of the heat exchanger, it is necessary to treat the heat exchanger in a round shape in order to finish the both ends. At this time, welding by hand is essential, which results in a decrease in working efficiency.

In recent years, a spiral fin tube type heat exchanger having greatly improved productivity has been proposed. The fin tube is a heat exchanger in which a radiating fin is spirally wound around an outer circumferential surface of a tube and is fixed by welding, and a wrinkle is formed in the central portion of the radiating fin to facilitate bending along an outer circumferential surface of the tube.

1, the refrigerator having the heat exchanger includes a refrigerator body 10 having a freezing chamber 12, a refrigerating chamber 14, and a machine chamber 16 with partition walls formed along the vertical direction therebetween, A wire condenser 23 disposed on one side of the compressor 21 for radiating the refrigerant and a heat exchanger 23 disposed on the front opening of the freezer compartment 12 and the refrigerating compartment 14 so as to prevent dew condensation A capillary tube 27 for expanding the refrigerant passed through the hot line 25 and an evaporator 29 disposed inside the main body 10 and performing a cooling action, , And the wire capacitor 23 is usually disposed inside the machine room 16.

A blowing fan 24 is provided on one side of the wire capacitor 23 to facilitate the heat dissipation of the wire capacitor 23 and the refrigerant passed through the capillary 27 is supplied to the inflow side of the evaporator 29 And the refrigerant passed through the evaporator 29 is sucked into the compressor 21 by the suction pipe 32 connected to the suction side of the compressor 21.

The capillary 27 is arranged to be able to exchange heat with the suction pipe 32 to promote evaporation of the refrigerant sucked into the compressor 21 through the suction pipe 32. A portion of the capillary tube 27 is disposed inside the machine room 16 and the rest is in contact with one side of the suction tube 32.

Examples of such techniques are described in documents 1 and 2 below.

For example, the following Patent Document 1 discloses a first refrigerant pipe which forms a flow path so that refrigerant flowing from one side flows and whose other side is closed, a second refrigerant pipe which is arranged to be spaced apart from the first refrigerant pipe so as to communicate with the first refrigerant pipe, A first refrigerant pipe connected to the first refrigerant pipe and a second refrigerant pipe connected to the first refrigerant pipe and the second refrigerant pipe to communicate with the flow path of the first refrigerant pipe and the second refrigerant pipe, And a plurality of connection pipes connecting the first and second refrigerant pipes and the second refrigerant pipe in parallel, wherein the connection pipe connects the first refrigerant pipe and the second refrigerant pipe, And an evaporator for an ice maker that is formed to connect a pair of opposed first and second projecting cooling tubes.

Patent Document 2 discloses a heat exchanger having a tube-shaped tube in which a refrigerant flows in and a discharge portion in which a refrigerant flows in one side, a contact portion formed to surround an outer periphery of the tube, And an extension portion connecting the lower support portion and the upper support portion, the lower support portion and the upper support portion so as to support the pin and the tube and the pin assembly, wherein the lower support portion, the upper support portion, And a fixing unit including an additional supporting plate, a height forming unit having a predetermined height on one side of the supporting plate, and a seating part on which the tube and the pin assembly are mounted at the end of the height forming unit. The pin assembly is bended using a single tube to have a single flow path, Having a, a zigzag pattern is formed so as to have a single column, the column adjacent to a heat exchanger is disclosed which is formed such that the tube located spaced from each other in the air flow direction.

Korean Registered Patent No. 10-1092627 (Registered on December 5, 2011) Korean Registered Patent No. 10-1053172 (registered on July 26, 2011)

However, in the case of applying the wire condenser (condenser) as in the conventional technique as described above, since the ambient air temperature of the heat exchanger is used, there is an advantage that forced cooling blowing is not necessary. However, So that there is a problem that the external shape of the heat exchanger becomes large.

In the case of the fin tube condenser, the cooling efficiency of the high temperature gas is excellent and the heat exchanger can be downsized. However, since the shape of the heat exchanger is formed in a rectangular shape, the problem of the heat exchange function in the corner portion of the square shape there was.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a heat exchanger for a refrigerator and a freezer, which has advantages of a wire capacitor and an advantage of a fin tube condenser and is small in size and heat exchange is performed over the entire cooling tube.

It is another object of the present invention to provide a refrigerant and refrigerator heat exchanger capable of realizing miniaturization while maintaining the residence time of the refrigerant gas at high temperature and high pressure in the cooling pipe.

In order to achieve the above object, a heat exchanger according to the present invention is a heat exchanger used in a refrigerator and a freezer. The heat exchanger includes a first refrigerant pipe connected to a refrigerant inlet pipe for introducing refrigerant supplied from a compressor, a refrigerant pipe connected to a refrigerant discharge pipe A second refrigerant pipe, a connection pipe connecting the first refrigerant pipe and the second refrigerant pipe, a first cooling pipe connected to the first refrigerant pipe, and a second cooling pipe connected to the second refrigerant pipe, The first refrigerant pipe and the first cooling pipe are connected in a cross shape, and the second refrigerant pipe and the second cooling pipe are connected in a cross shape.

Further, in the heat exchanger according to the present invention, the first refrigerant pipe and the second refrigerant pipe are opposed to each other, the first cooling pipe comprises n (n is an integer of 2 or more) cooling pipes, The cooling pipe is composed of (n-1) cooling pipes, and the n cooling pipes and the (n-1) cooling pipes are disposed at positions displaced from each other.

Further, in the heat exchanger according to the present invention, the n cooling pipes and (n-1) cooling pipes each have a structure in which the length of the cooling pipe provided at the center portion is the longest and the length of the cooling pipe becomes shorter toward the upper portion and the lower portion As shown in FIG.

Further, in the heat exchanger according to the present invention, a plurality of thin plates having thermal conductivity are mounted on the outside of each of the n cooling pipes and (n-1) cooling pipes, and the plurality of thin plates are arranged in a circular shape And a fan for blowing air is provided on the front surface of the second cooling pipe.

In the heat exchanger according to the present invention, a partition plate for dividing the inside of the cooling pipe in the longitudinal direction is provided in each of the n cooling pipes and (n-1) cooling pipes, The refrigerant flows into the lower part through the upper part of the partition plate, and the refrigerant passing through the connection pipe is discharged to the upper part through the lower part of the partition plate.

As described above, according to the refrigerant / freezer heat exchanger of the present invention, the first refrigerant pipe and the first cooling pipe are connected in a cross shape, the second refrigerant pipe and the second cooling pipe are formed in a cross shape, A partition plate for dividing in the longitudinal direction is provided in the interior of the cooling pipe, so that the residence time of the high-temperature and high-pressure gas is extended to achieve the effect of maximizing the heat exchange.

According to the refrigerator and freezer heat exchanger of the present invention, the length of the cooling pipe provided at the center portion is the longest, and the length of the cooling pipe becomes shorter toward the upper portion and the lower portion. Is formed in a substantially circular shape, and when the air is blown by the blowing fan, heat exchange can be uniformly performed throughout the entire cooling tube.

1 is a view for explaining a refrigeration cycle of a refrigerator,
FIG. 2 is a main configuration diagram of a heat exchanger according to the present invention,
3 is a cross-sectional view showing a state where a thin plate is mounted on the first cooling pipe shown in FIG. 2,
4 is a view for explaining the flow of refrigerant through a refrigerant pipe and a cooling pipe,
5 is a view for explaining the flow of air passing through the first cooling pipe and the second cooling pipe;

These and other objects and novel features of the present invention will become more apparent from the description of the present specification and the accompanying drawings.

Hereinafter, the configuration of the present invention will be described with reference to the drawings.

FIG. 2 is a main structural view of a heat exchanger according to the present invention, and FIG. 3 is a sectional view showing a state where a thin plate is mounted on the first cooling pipe shown in FIG.

FIG. 4 is a view for explaining the inflow process of the refrigerant through the refrigerant pipe and the cooling pipe, and FIG. 5 is a view for explaining the flow of air passing through the first cooling pipe and the second cooling pipe.

2, the heat exchanger according to the present invention is a heat exchanger used in refrigerators and refrigerators such as refrigerators, cold / hot water machines, water purifiers, Kimchi refrigerators, ice makers, etc., and includes a compressor 100, a refrigerant supplied from the compressor 100 A first refrigerant pipe 300 connected to the refrigerant inlet pipe 200 and a second refrigerant pipe 500 connected to the refrigerant outlet pipe 400 for discharging the cooled refrigerant, 2, a refrigerant pipe (600) connecting the refrigerant pipe (500), a filter dryer (700) for removing impurities contained in the refrigerant gas discharged through the refrigerant discharge pipe (400) And a capillary tube 800 for supplying the capillary tube 800 to the evaporator.

In addition, as shown in FIG. 2, a blowing fan 900 is provided on the front surface of the second refrigerant pipe 500.

The connection between the first refrigerant pipe 300 and the connection pipe 600 and the connection between the second refrigerant pipe 500 and the connection pipe 600 are applied during the assembling process of a conventional heat exchanger Welding or the like, so that a detailed description thereof will be omitted.

2, a first cooling pipe 310 is connected to the first refrigerant pipe 300 in a direction substantially perpendicular to the first refrigerant pipe 300, The second cooling pipe 510 is connected to the pipe 500 in a direction substantially orthogonal to the second refrigerant pipe 500.

Accordingly, the first refrigerant pipe 300 and the first cooling pipe 310 are connected in a substantially cross shape, the second refrigerant pipe 500 and the second cooling pipe 510 are also connected in a substantially cross- Each refrigerant pipe and the inside of the cooling pipe are in communication with each other.

2, the first refrigerant pipe 300 and the second refrigerant pipe 500 are disposed opposite to each other, and the first cooling pipe 310 includes n (n is an integer of 2 or more) (N-1) number of cooling tubes which are one less than the number of the first cooling tubes, and the n cooling tubes and the (n-1) The cooling tubes are arranged at positions displaced from each other.

In the cooling pipe shown in FIG. 2, six first cooling pipes 310 are provided, five second cooling pipes 510 are provided, and each second cooling pipe 510 is connected to each first cooling pipe The first cooling pipe 310 and the second cooling pipe 510 may be connected to each other depending on the refrigeration or freezing capacity, the blowing capacity of the blowing fan 900, or the like, It is possible to realize the increase / decrease of the number.

In the structure shown in Fig. 2, the number of the second cooling pipes adjacent to the fan 900 is one less than the number of the first cooling pipes. However, the present invention is not limited to this, It is possible.

The main feature of the present invention is that the first cooling pipe 310 and the second cooling pipe 510 are arranged to be offset from each other with respect to the air blowing fan 900, A structure in which the blowing air is uniformly applied to the entire cooling pipe is applied.

Further, in the heat exchanger according to the present invention, the n cooling pipes and (n-1) cooling pipes each have a structure in which the length of the cooling pipe provided at the center portion is the longest and the length of the cooling pipe becomes shorter toward the upper portion and the lower portion And the first cooling pipe 310 and the second cooling pipe 510 are formed in a substantially circular shape so that the blowing air from the blowing fan 900 is almost uniformly transmitted to the entire cooling pipe. Thus, by forming the cooling pipes in a substantially circular shape corresponding to the shape of the blowing fan 900, the problem of the conventional pin tube condenser having a substantially rectangular shape can be solved.

In the heat exchanger according to the present invention, as shown in FIG. 3, the n-th cooling tubes 310 and the (n-1) A plurality of thin plates 320 having conductivity are mounted, and the thin plates 320 are mounted in a circular shape at intervals from each other.

The plurality of thin plates 320 may be formed of, for example, an aluminum thin plate, a copper thin plate, or the like.

In the heat exchanger according to the present invention, as shown in FIG. 3, inside the first cooling pipe 310, which is the n cooling pipes, and the second cooling pipe 510, which is the (n-1) The refrigerant flowing into the first refrigerant pipe 300 flows through the upper portion of the partition plate 330 to the lower portion of the partition plate 330, And the refrigerant having passed through the connection pipe 600 is discharged to the upper portion through the lower part of the partition plate 330.

That is, as shown in FIG. 4, the first refrigerant pipe 300 and the second refrigerant pipe 500 function as a pipe for balancing and maintaining the center for supplying and discharging the compressed refrigerant, The main heat exchange is performed in a plurality of first cooling pipes 310 and second cooling pipes 510 provided in the first refrigerant pipe 300 and the second refrigerant pipe 500, respectively.

4, the high-temperature, high-pressure gas supplied from the compressor 100 flows into the first refrigerant pipe 300 through the refrigerant inlet pipe 200 , And flows into the upper central portion of the cooling pipe. Subsequently, the refrigerant introduced into the upper central portion of the cooling tube flows toward the right and left ends of the cooling tube by the partition plate 330, passes through the left and right end portions, and then is supplied to the next stage cooling tube through the lower central portion. The above-described process is executed in each of the cooling pipes of the first cooling pipe 310 and is discharged to the second refrigerant pipe 500 through the connection pipe 600.

In the second refrigerant pipe (50), a process opposite to the flow of the refrigerant in the first refrigerant pipe (300), that is, the refrigerant flowing into the second refrigerant pipe (500) flows into the lower central portion of the cooling pipe The refrigerant flowing into the lower central portion of the pipe flows toward the right and left ends of the cooling pipe by the partition plate 330, passes through the left and right end portions, and is discharged to the next cooling pipe through the upper central portion. The above-described process is executed in each of the cooling pipes of the second cooling pipe 510, and is discharged to the dryer 700 through the refrigerant discharge pipe 400.

As described above, the high-temperature, high-pressure gas supplied to each of the cooling pipes is circulated in two stages in the respective cooling pipes by the partition plate 330 provided in each cooling pipe, so that the residence time in the pipe can be extended .

5, the total length of the first refrigerant pipe 300 and the second refrigerant pipe 500 is substantially the same as the total length of the blades provided in the air blowing fan 900, Since the tubes are provided to be shifted from each other, the blowing can be almost uniformly transmitted throughout the entire cooling tube.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

The heat exchanger can be maximized by using the refrigerant and freezer heat exchanger according to the present invention.

100: Compressor
200: Refrigerant inlet pipe
300: first refrigerant pipe
310: first cooling pipe
400: Refrigerant discharge pipe
500: second refrigerant piping
510: second cooling pipe
600: Connector

Claims

A heat exchanger for refrigeration and freezer,
A first refrigerant pipe connected to a refrigerant inlet pipe through which refrigerant supplied from the compressor flows, a second refrigerant pipe connected to a refrigerant outlet pipe for discharging the refrigerant, a second refrigerant pipe connected in series with the first refrigerant pipe and the second refrigerant pipe, A plurality of first cooling pipes connected in a direction perpendicular to the first refrigerant pipe and a plurality of second cooling pipes connected in a direction perpendicular to the second refrigerant pipe,
Wherein the first refrigerant pipe and the first refrigerant pipe are connected in a cross shape, the second refrigerant pipe and the second cooling pipe are connected in a cross shape, and the first refrigerant pipe and the second refrigerant pipe are connected to each other And piping for central balancing and maintenance for discharge,
A partition plate for dividing the inside of the cooling pipe in the longitudinal direction is provided in each of the first cooling pipe and the second cooling pipe,
The refrigerant introduced into the first refrigerant pipe flows into the upper central portion of the first refrigerant pipe, flows toward the left and right end portions of the first cooling pipe by the partition plate, passes through the left and right end portions, To the first cooling tube of the next stage,
The refrigerant introduced into the second refrigerant pipe flows into the lower central portion of the second refrigerant pipe, flows toward the right and left ends of the second cooling pipe by the partition plate, passes through the left and right end portions, To the second cooling pipe at the next stage.

The method of claim 1,
Wherein the first refrigerant pipe and the second refrigerant pipe are disposed opposite to each other,
Wherein the first cooling pipe comprises n cooling pipes (n is an integer of 2 or more), the second cooling pipe comprises (n-1) cooling pipes, and the n cooling pipes and (n- And the cooling tubes are disposed at positions displaced from each other.

3. The method of claim 2,
Wherein the n cooling pipes and the (n-1) cooling pipes each have a structure in which the length of the cooling pipe provided at the center portion is the longest and the length of the cooling pipe becomes shorter toward the upper and lower portions.

3. The method of claim 2,
Wherein a plurality of thin plates having thermal conductivity are mounted on the outside of each of the n cooling pipes and the (n-1) cooling pipes, the plurality of thin plates are mounted in a circular shape with an interval therebetween, And a fan for blowing air is provided on the front surface of the heat exchanger.

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