KR102097061B1 - Heat exchanger and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a heat exchanger and a method for manufacturing the same, wherein the heat exchanger is installed to be spaced apart from the frame and the frame, and a flow path through which the refrigerant flows is provided inside, and the flow path refrigerant is respectively supplied to both ends. Or, a manifold is installed to collect the refrigerant that has passed through the flow path, and has a plurality of refrigerant tubes formed by bending both ends divided into multiple stages based on the central portion.
The heat exchanger according to the present invention is formed by bending both ends divided into multiple stages based on the central portion of the refrigerant tube, so that the length of the refrigerant tube can be relatively extended, thereby increasing the heat contact time between the refrigerant and the outside air, thereby improving heat exchange efficiency. It has the advantage of being excellent.

Description

Heat exchanger and its manufacturing method {Heat exchanger and manufacturing method thereof}

The present invention relates to a heat exchanger and a method for manufacturing the same, and relates to a heat exchanger and a method for manufacturing the same, which can improve the heat exchange efficiency of the refrigerant tube by extending the contact time between the refrigerant and the outside air by bending the refrigerant tube in multiple stages.

In general, a refrigeration cycle implemented in a refrigerator, an air conditioner, etc. converts a low-temperature, low-pressure gas refrigerant to a high temperature and high pressure, and a high-temperature and high-pressure gas refrigerant flowing from the compressor is cooled and condensed by outside air to convert it into liquid refrigerant. The condenser is formed in a narrower diameter than the diameter of other parts, and the capillary tube for decompressing the liquid refrigerant flowing from the condenser and the liquid refrigerant passing through the capillary tube are evaporated at low temperature in a low pressure state, or in the refrigerator. It comprises an evaporator that absorbs the heat of the indoor air blown from the air conditioner.

Here, the condenser and the evaporator function as a device in which heat exchange is performed between a fluid such as outside air and a refrigerant as a working fluid, that is, a heat exchanger.

In such a heat exchanger, a circular refrigerant tube having a hollow cross section is conventionally bent in various shapes such as a meandering shape, and a plurality of cooling fins are provided in close contact at regular intervals along the outer circumferential surface of the refrigerant tube. Then, heat exchange is performed between the refrigerant flowing inside the refrigerant tube and a fluid such as air or cooling water passing through the refrigerant tube installation, wherein the cooling fins increase the heat exchange area and heat conductivity, thereby improving heat exchange efficiency. Improve.

However, since the refrigerant tube of the heat exchanger is formed in a meander, there is a disadvantage that the heat exchange efficiency of the refrigerant tube is relatively low because the volume is relatively large and the length of the internal flow path is limited.

Patent Publication No. 10-2014-0116625: Heat exchanger

The present invention was devised to improve the above problems, and an object of the present invention is to provide a heat exchanger and a method for manufacturing the heat exchanger formed by bending both ends divided into multiple stages based on the central portion of the refrigerant tube.

The heat exchanger according to the present invention for achieving the above object is installed to be spaced apart from the frame and the frame, a flow path through which the refrigerant flows is provided, and refrigerant is supplied to the flow path or the flow path respectively at both ends. A manifold is installed to collect the refrigerant that has passed through, and each of the two ends divided by the central portion is provided with a plurality of refrigerant tubes formed to bend in multiple stages.

The refrigerant tube is formed to extend such that the first unit portion from the central portion to one end portion and the second unit portion from the central portion to one end are pivoted around the central portion.

The first unit portion of the refrigerant tube extends in an arc shape having a predetermined first radius around the center portion, and the second unit portion of the refrigerant tube extends in an arc shape having a predetermined second radius around the center portion. It is desirable to be.

The first unit portion of the refrigerant tube is formed in a spiral in which the first radius increases as it moves away from the center portion, and the second unit portion of the refrigerant tube increases in a spiral shape as the second radius increases away from the center portion. It may be formed, but may be formed to extend in a spiral progress direction corresponding to the spiral progress direction of the first unit portion based on the central portion.

The first unit portion of the refrigerant tube is bent in multiple stages such that the first extension part extending in the first direction and the second extension part extending in the second direction intersecting with respect to the first direction are alternately formed. The second unit portion of the refrigerant tube is formed so as to alternately form a third extension part extending in a third direction and a fourth extension part extending in a fourth direction intersecting with respect to the third direction. It may be bent.

The first unit portion is formed such that the lengths of the first and second extension parts increase as the distance from the central portion increases, and the second unit portion increases as the lengths of the third and fourth extension portions move away from the central portion. It may be formed to increase.

The frame, which supports the refrigerant tubes, extends a predetermined length, and the central member of the refrigerant tubes is spaced apart from each other along the longitudinal direction, and is installed on the support member, and can be fixed to an installation object. It has a fixing unit provided with a bracket.

Meanwhile, the heat exchanger according to the present invention further includes at least one spacer installed on the refrigerant tubes so that the refrigerant tubes are spaced apart from each other.

The spacer extends along the separation direction of the refrigerant tubes, and the first gripping member and the first insertion groove are formed with a plurality of first insertion grooves along the extension direction on the outer surface so that the refrigerant tubes can be respectively inserted. It is in contact with the first gripping member so as to cover the outer surface of the formed first gripping member, and a plurality of second insertion grooves are formed at positions opposite to the first insertion grooves so that the refrigerant tubes can be respectively inserted. It has a two gripping member and a fixing member for fixing the first and second gripping members to each other.

At this time, it is preferable that one of the first and second gripping members is formed to be bent so that the other one of the first and second gripping members is inserted into the end so that a binding slot for binding is provided. .

The fixing member is coupled to the first and second gripping members between the first insertion grooves so as to surround the first and second gripping members so that the first and second gripping members can be in close contact with each other. Combined.

On the other hand, the manufacturing method of the heat exchanger according to the present invention is a header preparation step of supplying refrigerant to the refrigerant tube or preparing a manifold for receiving the refrigerant that has passed through the refrigerant tube, and the manifold along a predetermined arrangement direction. A connection step of installing the respective ends of the refrigerant tubes arranged to be spaced apart from each other, and a setting step of setting spacers in the refrigerant tubes so as to support the refrigerant tubes having the manifolds spaced apart from each other, and after the setting step In, a processing step of bending the refrigerant tubes in multiple stages.

The header preparation step includes a first forming step of forming a first pipe coupling portion so that a supply pipe or a discharge pipe can be coupled to one end of a binding pipe provided with a flow path through which a refrigerant can flow, and a center of the binding pipe. A pressing step of applying a pressing force to the pressing portion of the binding pipe multiple times so that the binding pipe can be deformed so that the distance between the pressing portions of the binding pipe opposite to each other is reduced, and after the pressing step, the And a second forming step of manufacturing the manifold by forming a second pipe coupling portion so that the refrigerant tubes can be inserted into the other end of the binding pipe.

The spacer has a width smaller than the length of the refrigerant tube, and a plurality of inlet grooves are formed to be spaced apart from each other along the arrangement direction so that the central portion of the refrigerant tube can be drawn, and in the processing step, the refrigerant tube is bent. When the coolant tubes are bent together with the spacer so that the coolant tubes are supported on the spacer, and after the processing step, an installation step of installing the spacers supported by the coolant tubes on a bracket for fixing to the installation object It is preferable to further include.

In the processing step, the refrigerant tube is bent so that the first unit portion from the center portion to one end portion and the second unit portion from the center portion to one end are formed to pivot around the center portion.

In the processing step, the first unit portion extends in an arc shape having a predetermined first radius around the center portion, and is formed in a spiral shape in which the first radius increases as the distance from the center portion increases. The portion extends in an arc shape having a predetermined second radius around the central portion, and is formed in a spiral shape in which the second radius increases as it moves away from the central portion, and the spiral progresses of the first unit portion based on the central portion. Bending may be performed so as to extend in a spiral progressing direction corresponding to the direction.

In the processing step, the first unit portion is multi-staged such that a first extension part extending along the first direction and a second extension part extending along the second direction intersecting the first direction are alternately formed. It is bent, but the distance from the central portion is formed to increase the length of the first and second extension parts, the second unit portion is a third extension part extending in the third direction, and the third direction The fourth extension parts extending along the fourth direction intersecting with respect to each other are bent in multiple stages so as to be alternately formed, but it is preferable that the third and fourth extension parts are bent to increase in length as they move away from the center. .

The heat exchanger according to the present invention is formed by bending both ends divided into multiple stages based on the central portion of the refrigerant tube, so that the length of the refrigerant tube can be extended relatively long, so that the heat contact time between the refrigerant and the outside air is increased, thereby improving heat exchange efficiency. It has the advantage of being excellent.

1 is a conceptual diagram for a refrigeration cycle to which a heat exchanger according to the present invention is applied,
2 is a perspective view of a heat exchanger according to the first embodiment of the present invention,
Figure 3 is a front view of the refrigerant tube of the heat exchanger of Figure 2,
Figure 4 is a side view of the heat exchanger of Figure 2,
5 is an exploded perspective view of a heat exchanger according to a second embodiment of the present invention,
Figure 6 is a front view of the refrigerant tube of the heat exchanger of Figure 5,
7 is a perspective view of a heat exchanger according to a third embodiment of the present invention,
8 is a perspective view of a spacer of the heat exchanger of Figure 7,
9 is a cross-sectional view of a spacer according to another embodiment of the present invention,
10 is a flow chart for a method of manufacturing the heat exchanger of the present invention,
11 is a conceptual diagram showing the working state of the setting step of the heat exchanger manufacturing method of FIG. 10;

Hereinafter, a heat exchanger according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention can be applied to various changes and may have various forms, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals are used for similar components. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual for clarity of the present invention.

Terms such as first and second 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 other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

Terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “include” or “have” are intended to indicate the presence of features, numbers, steps, actions, elements, parts or combinations thereof described in the specification, but one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, actions, components, parts or combinations thereof are not excluded in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

1 is a view of a refrigeration cycle to which the heat exchanger according to the present invention is applied.

Referring to FIG. 1, a refrigeration cycle to which a heat exchanger according to the present invention is applied may include a compressor 100, a condenser 300, a capillary tube 500, and an evaporator 700.

The compressor 100 converts a low temperature low pressure gas refrigerant to a high temperature high pressure gas refrigerant. The refrigerant changed to a high temperature and high pressure gas is discharged to the condenser 300 through the discharge pipe 150.

The condenser 300 is changed into a gas of high temperature and high pressure from the compressor 100, the refrigerant discharged through the discharge pipe 150 flows, and the flow path having various shapes such as a meandering shape of the introduced refrigerant It is changed to liquid refrigerant at room temperature and high pressure while being transported through.

The condenser 300 is preferably formed to have a flow path forming a state in which the upper and lower sides are continuously bent, but is not limited thereto. To remove moisture contained in the liquid refrigerant at room temperature and high pressure that has passed through the condenser 300, the condenser 300 is biased toward the condenser 300 so as to be close to the condenser 300 between the condenser 300 and the capillary 500. 200 is provided. The liquid refrigerant at room temperature and high pressure that has passed through the condenser 300 is dehumidified by the dryer 200 and transferred to the capillary tube 500.

The capillary tube 500 is a tube having a longer length and a smaller diameter than the discharge tube 150, and the refrigerant is expanded while the liquid refrigerant at room temperature and high pressure passing through the condenser 300 passes through the capillary tube 500. More specifically, the capillary tube 500 regulates the amount of refrigerant by passing a suitable amount of liquid refrigerant corresponding to a degree capable of covering the amount of vaporization in the evaporator 700 while the compressor 100 is operating. . The capillary tube 500 lowers the liquid refrigerant of high pressure to the evaporation pressure, so that when the refrigerant reaches the end of the capillary tube 500, the amount of the refrigerant is evaporated.

The evaporator 700 is spaced in a short width in the front-rear direction and spaced in a relatively long width in the left-right direction when viewed from a plane. Then, the evaporator 700 may be bent in a coil shape from bottom to top, but the bending method is not limited thereto.

The accumulator 900 is installed between the compressor 100 and the evaporator 700. The refrigerant that has passed through the accumulator 900 is transferred to the compressor 100 side. In the accumulator 900, the refrigerant flows inward when the compressor 100 stops driving, and a part of the refrigerant accumulates and accumulates. By the accumulator 900, the compressor 100 can maintain a constant pressure suitable for operation.

At this time, a connection part 910 connected to the evaporator 700 may be provided at an inlet side of the accumulator 900. In addition, the compressor 100 is connected to the outlet side of the accumulator 900 by a suction pipe 130. The outlet side of the accumulator 900 may be provided with a coupling portion 930 to which the end of the suction pipe is coupled and fixed.

Here, the condenser 300 and the evaporator 700 serves as a heat exchanger in which heat exchange is performed between a fluid such as air or cooling water and a refrigerant as a working fluid. The heat exchanger is formed by bending a refrigerant tube forming a movement path of the refrigerant in various shapes on the manifold (34). In addition, the heat exchanger exchanges heat with a fluid such as air or coolant passing through a place where the refrigerant tube is installed.

 In the present invention, both the condenser 300 and the evaporator 700 may be applied to the heat exchanger, but the condenser 300 will be described here. At this time, the technical idea of the present invention may be applied to the evaporator 700, and is not limited to the condenser 300.

2 to 4, a heat exchanger 10 according to a first embodiment of the present invention is shown.

Referring to the drawings, the heat exchanger 10 is installed to be spaced apart from each other in the frame 20 and the frame 20, and there are provided flow paths through which refrigerant flows, and the flow path refrigerants are respectively provided at both ends. A manifold 34 is installed to collect the refrigerant that has been supplied or has passed through the flow path, and has a plurality of refrigerant tubes 30 formed by bending both ends divided into multiple stages based on the central portion 31 do.

The frame 20 is to support the refrigerant tubes 30, extends a predetermined length, and a support member 21 in which the central parts 31 of the refrigerant tubes 30 are installed to be spaced apart from each other along the longitudinal direction, and It is installed on the support member 21 and is provided with a fixing unit 22 provided with a bracket 25 to be fixed to an installation object.

The support member 21 extends a predetermined length in the front-rear direction and is formed to have a bent cross section corresponding to the shape of the central portion 31 and the portion adjacent to the central portion 31 of the refrigerant tube 30. At this time, the support member 21 is formed with a plurality of inlet grooves (not shown) in which the central portion 31 of the refrigerant tube 30 is drawn and fixed on the outer circumferential surface. The inlet grooves are introduced into the inside with respect to the outer circumferential surface of the support member 21 at a predetermined depth, and a plurality are formed to be spaced apart from each other along the front-rear direction. At this time, the inlet groove is preferably formed to form a closed orbit along the outer circumferential surface of the support member 21.

The fixing unit 22 is fixed to the connecting rod 23 fixed to the rear end of the support member 21, and fixed to the lower end of the fixing rod 24, and the fixing rod 24 provided with brackets 25 on each side. To be equipped.

The connecting rod 23 extends a predetermined length in the vertical direction, and the rear end of the support member 21 is fixed to the upper end. The fixed rod 24 is extended so that both ends of the connecting rod 23 are separated from the left and right directions. At this time, brackets 25 are formed at both ends of the fixed rod 24, respectively. The bracket 25 extends a predetermined length forward with respect to the fixed rod 24, and a plurality of through holes penetrated in the vertical direction are formed to allow the fixed bolt to pass therethrough. The fixing bolt inserted in the through-hole may be bolted to the installation object, that is, a household appliance such as a refrigerator or a wall surface of a building to fix the frame 20 to the installation object.

A plurality of manifolds 34 are respectively installed at both ends of the plurality of refrigerant tubes 30, and an accommodation space in which the refrigerant is accommodated is provided. The manifold 34 is provided with an injection pipe 35 for supplying refrigerant to the receiving space or an outlet pipe 36 for discharging the refrigerant in the receiving space, respectively, on one side, and a plurality of refrigerant tubes on the other side. The end of 30 is provided.

The injection pipe 35 is supplied to the manifold 34 installed at one end of the refrigerant tubes 30, and the refrigerant accommodated in the accommodation space of the manifold 34 is injected into the refrigerant tubes 30. The refrigerant that has passed through the refrigerant tubes 30 is discharged to the manifold 34 installed at the other end of the refrigerant tubes 30, and discharged to the outside through the outlet pipe 36 installed in the manifold 34.

The refrigerant tube 30 is formed in a pipe shape with a movement path provided therein, and a plurality of refrigerant tubes 30 are installed to be spaced apart from each other on the support member 21 of the frame 20 along a predetermined arrangement direction, that is, in the front-rear direction. The refrigerant tube 30, the refrigerant is introduced into the movement path, the manifolds 34 are respectively installed at both ends so that the refrigerant in the movement path can be discharged to the outside, the heat transfer rate is formed of a metallic material such as copper excellent It is preferred.

On the other hand, in the refrigerant tube 30, the first unit portion 32 from the central portion 31 to one end and the second unit portion 33 from the central portion 31 to one end center the central portion 31. It is formed to be extended to turn. That is, the first unit portion 32 of the refrigerant tube 30 extends in an arc shape having a predetermined first radius around the central portion 31, and the second unit portion 33 of the refrigerant tube 30 ) Extends in an arc shape with a predetermined second radius around the central portion (31).

At this time, the first unit portion 32 is formed in a spiral shape in which the first radius increases as it moves away from the central portion 31. In addition, the second unit portion 33 is formed in a spiral shape in which the second radius increases as the second unit portion 33 of the refrigerant tube 30 moves away from the central portion 31. At this time, the second unit part 33 is formed to extend in a spiral progress direction corresponding to the spiral progress direction of the first unit part 32 based on the central portion 31. More preferably, the second unit part 33 is formed to extend in a spiral progress direction parallel to the spiral progress direction of the first unit part 32 with respect to the central portion 31.

That is, referring to FIG. 3, the first unit portion 32 is formed in a spiral wound around the center portion 31 of the refrigerant tube 30 to the left, and the second unit portion 33 is also a refrigerant tube 30 ) Is formed in a spiral wound to the left around the central portion (31).

As described above, the heat exchanger 10 according to the present invention is formed by bending both ends divided into multiple stages based on the central portion 31 of the refrigerant tube 30, thereby extending the length of the refrigerant tube 30 relatively long. Since it can be done, the heat contact time between the refrigerant and the outside air is increased, and thus, the heat exchange efficiency is excellent. Particularly, since the first unit part 32 and the second unit part 33 of the refrigerant tube 30 extend in the parallel spiral direction with respect to the central part 31, the length of the refrigerant tube 30 is extended longer. The manifold can be installed relatively easily because both ends of the refrigerant tube 30 are respectively located outside the refrigerant tube 30.

Meanwhile, FIGS. 5 and 6 illustrate a heat exchanger 110 according to a second embodiment of the present invention.

Elements having the same function as in the previously illustrated drawings are denoted by the same reference numerals.

Referring to the drawings, the refrigerant tube 120 of the heat exchanger 110 includes a first unit portion 122 from the central portion 121 to one end portion and a second unit portion 33 from the central portion 121 to one end portion. It is formed to pivot around the central portion 121, but is formed to have a polygonal structure.

That is, the first unit portion 122 of the refrigerant tube 120 includes a first extension part 124 extending along the first direction and a second extension extending along the second direction intersecting the first direction. The parts 125 are bent in multiple stages so that they are alternately formed. In the first direction, a vertical direction is applied, and in the second direction, a left and right direction orthogonal to the first direction is applied. In addition, the first unit portion 122 of the first and second extension parts 124 and 125 is further away from the central portion 121 so as to extend in a direction that rotates around the central portion 121 of the refrigerant tube 120 It is preferably formed to increase in length.

Meanwhile, the second unit portion 123 of the refrigerant tube 120 includes a third extension part 126 extending along the third direction, and a fourth extension extending along the fourth direction intersecting the third direction. The parts 127 are bent in multiple stages so that they are alternately formed. In the third direction, an up-down direction is applied, and in the fourth direction, a left-right direction orthogonal to the third direction is applied. In addition, the second unit portion 123 is the length of the third and fourth extension parts 126 and 127 as they move away from the central portion 121 so as to extend in a direction that rotates around the central portion 121 of the refrigerant tube 120 It is preferably formed to increase.

In addition, the second unit part 123 is formed to extend in a turning direction corresponding to the turning direction of the first unit part 122 based on the central portion 121. More preferably, the second unit part 123 is formed to extend in a turning direction parallel to the turning direction of the first unit part 122 based on the central portion 121. That is, the first unit portion 122 is formed of a square structure wound around the center portion 121 of the refrigerant tube 120 to the left, and the second unit portion 123 is also the central portion 121 of the refrigerant tube 120 ), It is formed in a square structure wound to the left.

Meanwhile, both ends are bent so that the central part 121 of the refrigerant tube 120 is also connected to the first extension part 124 of the first unit part 122 and the second extension part 125 of the second unit part 123. It is preferably formed.

At this time, in the illustrated example, the structure in which the refrigerant tube 120 is bent in multiple stages to have a rectangular structure is illustrated, but the refrigerant tube 120 is not limited thereto, and may be formed in a polygonal structure such as a pentagon or hexagon.

Meanwhile, FIGS. 7 and 8 show a heat exchanger 200 according to another embodiment of the present invention.

Referring to the drawings, the heat exchanger 200 is provided with a plurality of spacers 210 installed in the refrigerant tubes 120 so as to support the refrigerant tubes 120 apart from each other, instead of the support member 21 do. At this time, the bracket 220 is formed with a plurality of fixing grooves 221 spaced apart from each other along the front-rear direction so that the refrigerant tubes 120 are respectively inserted and fixed to the upper portion instead of the connecting rod and the fixing rod.

The spacer 210 includes a first gripping member 211 supported on the outer circumferential surfaces of the refrigerant tubes 120, a second gripping member 212 coupled to the first gripping member 211, and the first and second It is provided with a fixing member 213 for mutually fixing the gripping members (211,212).

The first gripping member 211 has a predetermined thickness and is formed in a plate shape extending in the front-rear direction, and a plurality of first insertion grooves 214 are formed so that the refrigerant tubes 120 can be respectively inserted on the outer surface. It is. The first insertion groove 214 is drawn into a predetermined depth inward with respect to the outer surface of the first gripping member 211, and is formed to be spaced apart from each other along the front-rear direction of the first gripping member 211.

On the other hand, the first gripping member 211 is formed so that one end is bent toward the other end so that a binding slot for binding is inserted into one end of the second gripping member 212. Meanwhile, in the illustrated example, one end of the first gripping member 211 is formed to be bent, but the present invention is not limited thereto, and one end of the second gripping member 212 is inserted so that one end of the first gripping member 211 can be inserted. The part may be formed to be bent.

The second gripping member 212 may be in contact with the first gripping member 211 so as to cover the outer surface of the first gripping member 211 in which the first insertion groove 214 is formed. It is formed in a plate shape corresponding to 211), the other end is formed to be rotatable to the other end of the first gripping member 211. The second gripping member 212 has a plurality of second inserting grooves 215 at positions opposite to the first inserting grooves 214 so that the refrigerant tubes 120 supported on the first gripping member 211 can be respectively inserted. ) May be formed.

The fixing member 213 is coupled to surround the first and second gripping members 211 and 212 so that the first and second gripping members 211 and 212 can be in close contact with each other. The fixing member 213 has a lead-in space so that the first and second gripping members 211 and 212 can be inserted through, so that the first and second gripping members 211 and 212 can be easily drawn into the lead-in space. It is formed in a 'C' shape with one side incised. A plurality of the fixing members 213 are coupled to the first and second gripping members 211 and 212 between the first insertion grooves 214.

Since the spacer 210 according to the present invention configured as described above firmly supports the refrigerant tubes 120 so that the mutual separation distances of the refrigerant tubes 120 are maintained, the refrigerant tubes 120 even when external force is applied during transportation or assembly To prevent them from contacting each other.

On the other hand, in the illustrated example, four spacers 210 are installed on the upper, lower, left and right sides of the refrigerant tubes 120, respectively, but the spacer 210 is not limited to this, but the size or length of the refrigerant tube 120 Depending on the number, it may be installed in three or fewer or five or fewer. At this time, the manifolds respectively installed at both ends of the refrigerant tubes 120 are preferably formed in a relatively flat shape to reduce the volume.

Meanwhile, as illustrated in FIG. 9, the second gripping member 212 may be formed detachably from the first gripping member 211. At this time, the first gripping member 211 is formed such that the other end is bent toward one end so that an insertion slot into which the other end of the second gripping member 212 is inserted is provided.

Meanwhile, FIG. 10 is a flowchart illustrating a method of manufacturing a heat exchanger according to the present invention.

Referring to the drawings, the manufacturing method of the heat exchanger includes a header preparation step (S101), an installation step, a connection step (S105), a setting step (S110), a processing step (S120), and an installation step (S130).

The header preparation step (S101) is a step of preparing a manifold for supplying refrigerant to the refrigerant tube 120 or receiving a refrigerant that has passed through the refrigerant tube 120, the first forming step (S102), the pressing step ( S103), and a second forming step (S104).

The first forming step (S102) is a step of forming a first pipe coupling portion so that a supply pipe or a discharge pipe can be coupled to one end of a binding pipe provided with a flow path through which a refrigerant can flow.

The first pipe joint is formed by forming one end of the binding pipe so as to have an inner diameter corresponding to the outer diameter of the supply pipe or the discharge pipe so that the supply pipe or the discharge pipe can be inserted. At this time, it is preferable to mold a plurality of binding pipes provided with a first pipe coupling portion.

The pressing step S103 applies a pressing force to the pressing portion of the binding tube multiple times so that the binding tube can be deformed so that the distance between the pressing parts of the binding tube opposite to each other based on the center of the binding tube is reduced. It is a step. At this time, it is preferable that a portion of the binding pipe except the first pipe coupling portion is applied to the pressing portion of the binding pipe. A predetermined pressing force is applied to the binding tube a number of times so that the circular binding tube has an elliptical shape with a relatively flat shape. The flat-shaped bundling tube is relatively small in volume when molded into a manifold, so it can be easily installed even on an installation object with a small installation space.

The second forming step (S104) is a step of manufacturing the manifold by forming a second pipe coupling portion so that the refrigerant tubes 120 can be inserted into the other end of the binding pipe after the pressing step (S103). By applying a pressing force to the pressing portion of the other end of the binding pipe, the width of the tube is reduced from the central portion of the binding pipe to form the second pipe coupling portion.

The installation step is a step of installing the manifolds at both ends of the refrigerant tubes 120 arranged to be spaced apart from each other along a predetermined arrangement direction. After arranging the refrigerant tubes 120 apart from each other, the manifolds are respectively coupled to both ends of the refrigerant tubes 120. At this time, it is preferable that the operator inserts the refrigerant tube 120 into the second pipe coupling portion of the manifold, and then seals the gap between the manifold and the refrigerant tube 120 through a brazing operation.

Setting step (S110) is a step of setting a plurality of refrigerant tubes 50 in the plate member 51 to be spaced apart from each other along a predetermined arrangement direction as shown in FIG.

At this time, the plate member 51 is formed in a plate shape having a left and right width smaller than the length of the refrigerant tube 50, and extends a predetermined length in the front-rear direction. In addition, a plurality of inlet grooves 53 are formed on the upper surface of the plate member 51 so that the central portion of the refrigerant tubes 50 can be introduced. The inlet grooves 53 are drawn at a predetermined depth downward with respect to the upper surface of the plate member 51, and are formed to be spaced apart from each other along the front-rear direction in the arrangement direction.

The operator inserts the central portion of the refrigerant tube 50 into the inlet grooves 53 of the plate member 51 to set the refrigerant tubes 50 in the plate member 51. At this time, the refrigerant tubes 50 are linearly extended along the left and right directions, and it is preferable that manifolds 34 are installed at both ends.

On the other hand, in the setting step (S110), instead of the plate member 51, the spacers 210 shown in FIGS. 7 and 8 may be installed in the refrigerant tubes 120. At this time, the operator may install a plurality of spacers 210 spaced apart from each other along the longitudinal direction of the refrigerant tube 120.

The processing step S120 is a step in which the refrigerant tubes 50 are bent in multiple stages after the setting step S110, after the setting step S110. At this time, the operator bends the refrigerant tubes 50 together with the plate member 51 using a bending machine so that the refrigerant tubes 50 can be supported on the plate member 51.

On the other hand, the refrigerant tube 50 is bent so that the first unit portion from the central portion to one end portion and the second unit portion from the central portion to one end are formed to pivot around the central portion. At this time, the first unit portion extends in an arc shape having a predetermined first radius around the central portion so that the refrigerant tube 50 is formed into the refrigerant tube 30 of the first embodiment. The first radius is formed in a spiral that increases, and the second unit portion extends in an arc shape having a predetermined second radius around the center, and is formed in a spiral that increases in distance from the center. However, it may be bent so as to extend in a spiral progress direction corresponding to the spiral progress direction of the first unit portion based on the central portion.

In addition, the first unit part extends along the first direction so that the refrigerant tube 50 is formed into the refrigerant tube 120 of the second embodiment, and the first extension part 124 intersects with respect to the first direction. The second extension parts 125 extending along the second direction are bent in multiple stages so as to be alternately formed. However, as the distance from the center portion increases, the lengths of the first and second extension parts 124 and 125 increase. The second unit portion is formed such that the third extension parts 126 extending along the third direction and the fourth extension parts 127 extending along the fourth direction intersecting with respect to the third direction are alternately formed. It is bent in multiple stages, but may be bent to increase the lengths of the third and fourth extension parts 126 and 127 as they move away from the central portion 121. The plate member 51 is bent together with the refrigerant tubes 50 and is formed as a support member 21 of the frame 20.

On the other hand, when the spacer 210 of the embodiment shown in FIGS. 7 and 8 is installed on the refrigerant tubes 50, it is preferable to bend the refrigerant tube 50 excluding the spacers 210 in the processing step S120. Do.

The installation step (S130) is a step of installing the bracket 25 for fixing the plate member 51 on which the refrigerant tubes 50 are supported to the installation object after the processing step (S120). The plate member 51 bent in the processing step (S120) is fixed to the fixing unit 22 with the brackets 25 installed at both ends. At this time, it is preferable to fix the rear end of the plate member 51 to the upper end of the connecting rod 23 of the fixing unit 22.

The manufacturing method of the heat exchanger according to the present invention configured as described above is set to the linearly extended refrigerant tube 50 to the plate member 51 and then bent together with the refrigerant tubes 50, so that the refrigerant tube 50 and Since the molding of the support member 21 of the frame 20 can be performed at the same time, there is an advantage that the manufacturing work efficiency is improved.

On the other hand, when the spacer 210 of the embodiment shown in FIGS. 7 and 8 is installed in the refrigerant tubes 50, in the installation step (S130), the refrigerant in the bracket 220 of the embodiment shown in FIGS. 7 and 8 It is preferred that the tubes 50 are installed.

The description of the presented embodiments is provided to enable any person of ordinary skill in the art to use or practice the present invention. Various modifications to these embodiments will be apparent to those skilled in the art of the present invention, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention should not be limited to the embodiments presented herein, but should be interpreted in the broadest scope consistent with the principles and novel features presented herein.

10: heat exchanger
20: frame
21: support member
22: Fixed unit
23: connecting rod
24: fixed rod
25: bracket
30: refrigerant tube
31: Central
32: first unit part
33: second unit part
34: Manifold
35: Infusion tube
36: outflow pipe

Claims (17)

frame;
The frame is arranged to be spaced apart from each other along one direction, a flow path through which the refrigerant flows is provided, and a manifold is provided at both ends to supply refrigerant to the flow path or collect refrigerant that has passed through the flow path. Is installed, a plurality of refrigerant tubes are formed to be bent in multiple stages, both ends partitioned based on the central portion; And
And at least one spacer installed on the outermost sides of the refrigerant tubes so as to support the refrigerant tubes apart from each other.
The manifold
A binding tube provided with a flow path through which the refrigerant flows;
A first pipe coupling portion formed at one end of the binding pipe so that a supply pipe through which the refrigerant is supplied or a discharge pipe through which the refrigerant is discharged may be coupled;
It has a second pipe coupling portion formed so that the refrigerant tube can be inserted into the other end of the binding tube;
The binding tube is manufactured such that the distance between the pressing parts is deformed adjacent to each other by applying a pressing force to the pressing parts facing each other based on the center, wherein the pressing part is the binding tube except the first pipe coupling part. Is part of,
The refrigerant tube is formed to extend such that the first unit portion from the center portion to one end portion and the second unit portion from the center portion to one end portion pivot around the center portion,
The frame
As the central parts of the refrigerant tubes are installed to be spaced apart from each other along the longitudinal direction, a predetermined length is extended along the arrangement direction of the refrigerant tubes, and a plurality of inlet grooves are formed on the outer circumferential surface so that the central parts of the refrigerant tubes can be inserted. , A support member formed to be bent to correspond to a shape of a central portion of the refrigerant tube and a portion adjacent to the central portion,
It is installed on the support member, and is provided with a fixing unit provided with a bracket to be fixed to the installation object,
The bracket is fixed to the installation object, and a plurality of protruding parts protruding upward are formed to support the refrigerant tubes, and the arrangement direction of the refrigerant tubes is arranged so that the refrigerant tubes are respectively inserted in the protruding parts. Accordingly, a plurality of fixing grooves are formed to be spaced apart from each other,
The spacer
A first gripping member extending along the separation direction of the refrigerant tubes and having a plurality of first insertion grooves along an extension direction on an outer surface so that the refrigerant tubes can be respectively inserted;
The first insertion groove is contacted with the first gripping member so as to cover the outer surface of the formed first gripping member, and the plurality of agents are positioned at positions opposite to the first insertion grooves so that the refrigerant tubes can be respectively inserted. A second gripping member having two insertion grooves; And
And a fixing member fixing the first and second gripping members to each other.
One of the first and second gripping members is formed to be bent at an end so that another end of the first and second gripping members may be inserted at an end to provide a binding slot for binding.
The fixing member is a plurality of each coupled to the first and second gripping members between the first inserting grooves, and an inlet space is formed so that the first and second gripping members can be inserted through, The first and second gripping members are formed into a 'C' type with one side cut out so that the first and second gripping members can be easily drawn into the inlet space,
The support member is bent together with the refrigerant tubes during the bending process of the refrigerant tube, a plate member having a plurality of the inlet grooves formed on the outer circumferential surface, wherein the central portions of the refrigerant tubes before bending are respectively inserted into the inlet grooves. Heat exchanger characterized in that it is manufactured.
delete According to claim 1,
The first unit portion of the refrigerant tube extends in an arc shape having a predetermined first radius around the central portion,
The heat exchanger, characterized in that the second unit portion of the refrigerant tube extends in an arc shape having a predetermined second radius around the central portion.
According to claim 3,
The first unit portion of the refrigerant tube is formed in a spiral in which the first radius increases as it moves away from the central portion,
The second unit portion of the refrigerant tube is formed in a spiral in which the second radius increases as it moves away from the central portion, and is formed extending in a spiral progression direction corresponding to the spiral progression direction of the first unit portion based on the central portion. Heat exchanger, characterized in that.
According to claim 1,
The first unit portion of the refrigerant tube is bent in multiple stages such that the first extension part extending in the first direction and the second extension part extending in the second direction intersecting with respect to the first direction are alternately formed. Become,
The second unit portion of the refrigerant tube is bent in multiple stages such that a third extension part extending in the third direction and a fourth extension part extending in the fourth direction intersecting with respect to the third direction are formed alternately. Heat exchanger, characterized in that.
The method of claim 5,
The first unit portion is formed so that the lengths of the first and second extension parts increase as the distance from the central portion increases.
The second unit portion is a heat exchanger, characterized in that formed to increase the length of the third and fourth extension parts away from the central portion.
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