KR101646484B1 - Plate Heat Exchangers having copper connectors's manufacturing method - Google Patents

Plate Heat Exchangers having copper connectors's manufacturing method Download PDF

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Publication number
KR101646484B1
KR101646484B1 KR1020160005301A KR20160005301A KR101646484B1 KR 101646484 B1 KR101646484 B1 KR 101646484B1 KR 1020160005301 A KR1020160005301 A KR 1020160005301A KR 20160005301 A KR20160005301 A KR 20160005301A KR 101646484 B1 KR101646484 B1 KR 101646484B1
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KR
South Korea
Prior art keywords
plate
connector
assembly
copper
heat
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Application number
KR1020160005301A
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Korean (ko)
Inventor
천성민
이덕희
Original Assignee
지에이씨피 주식회사
천성민
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Priority to KR1020160005301A priority Critical patent/KR101646484B1/en
Priority to PCT/KR2016/008381 priority patent/WO2017122893A1/en
Application granted granted Critical
Publication of KR101646484B1 publication Critical patent/KR101646484B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/008—Soldering within a furnace
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3006—Ag as the principal constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/302—Cu as the principal constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • F28F2275/064—Fastening; Joining by welding by induction welding or by using microwaves

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate type heat exchanger having a copper connector, and more particularly, to a plate type heat exchanger in which a connector of a plate type heat exchanger is made of a conventional stainless steel material To a plate-type heat exchanger having a copper connector replaced with a copper material, and a method of manufacturing the same.
For this purpose, a step (S11) of forming an assembly by inserting a brass lead plate between the upper and lower plates and the heat exchange plate (2) and then laminating them; A step (S12) of inserting the copper connector into the port hole together with or in succession with the brass lead ring; And a step (S13) of simultaneously brazing the assembly and the connector at 980 to 1050 캜 after charging the assembly into which the connector is inserted into the vacuum brazing furnace.

Description

TECHNICAL FIELD [0001] The present invention relates to a plate heat exchanger having copper connectors,

The present invention relates to a method of manufacturing a plate-type heat exchanger having a copper connector, and more particularly, to a method of manufacturing a plate-type heat exchanger having a connector made of a conventional stainless steel The present invention relates to a method of manufacturing a plate-type heat exchanger having a copper connector replaced with a copper material from a stainless steel material.

As is known, plate heat exchangers are used in various industrial fields for the purpose of transferring heat to a heated fluid having a low temperature through a heat transfer plate, and are also used for various purposes such as supplying hot water for heating and cooling.

As shown in FIG. 1, the conventional heat exchanger has a plurality of heat transfer plates arranged at narrow intervals, and the periphery thereof is sealed. A heat medium space and a heated fluid space formed between the heat transfer plates are alternately formed. The heat exchanger is connected to the cover (5) of the plate heat exchanger so as to communicate with the inner heating / heating flow hole so as to communicate with the inner heating / The pipe connection connector 6,6a is connected to the hole by the brazing material B and the pipe 1 connected to the connector 6 is also connected by the brazing material B, And the pipe with screws.

On the other hand, as a method of sealing the heat transfer plate for manufacturing the plate heat exchanger, a heat exchange plate fusion method in which a plurality of stainless steel heat exchange plates and a copper plate are fused and bonded to each other is adopted.

Specifically, referring to Registration Practical Utility Model Registration No. 20-0409691 (hereinafter referred to as Prior Art 1), a heat exchanger that performs a function of raising the temperature of the fuel gas by using heated engine coolant water, A plurality of heat exchange plates formed of stainless steel are inserted between the heat exchange plates and a copper plate of a plate type (i.e., having a flat face) is inserted between the heat exchange plates, It is manufactured as a heat exchanger. At this time, the copper plate is used as filler metal, the stainless steel is used as a base material, the working temperature is about 1200 Deg. Lt; RTI ID = 0.0 >

That is, in the brazing method of the plate heat exchanger according to the prior art document 1, a copper plate having a flat surface and a heating plate having a V-shaped (corrugated) heat transfer path are sequentially laminated and brazed. At this time, the copper plate melts at a high temperature as a melting material, and the copper plate is melted by the capillary phenomenon while the stainless steel plate is laminated, and is bonded to the stainless steel plates by the cooling process.

The piping connection connectors 6 and 6a of the plate-type heat exchanger are also formed of stainless steel. When the piping connection connectors 6 and 6a are used as a cooper, Because it melts at the same temperature as the copper plate due to the same material as the copper plate used as the copper plate.

In general, the connection pipe 1 connected to the connector 6 adopts a copper material in consideration of the thermal conduction efficiency and the like. This is because the brazing of the connector 6 and the copper connecting pipe 1 B) Due to the necessity of welding between dissimilar metals for bonding, the defect rate is increased, and the price is increased due to the use of a welding rod whose content is 20 times higher than that of copper-copper welding. The welding difficulty is high, As a result, there were problems.

Prior Art 1: Registered Utility Model Registration No. 20-0409691 Prior Art 2: Korean Patent Registration No. 10-0514696 Prior Art 3: Korean Patent Registration No. 10-1214014 Prior Art 4: Korean Patent Publication No. 10-1999-0079555

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a method of manufacturing a plate heat exchanger having a copper connector, which can adopt a connector as a cooper, And to enable welding between copper pipe and copper-copper alloys.

In order to accomplish the above object, the present invention provides a method of manufacturing a plate-type heat exchanger having a copper connector, wherein a plurality of heat exchange plates are laminated and brazed so that the heat and the fluid to be heated exchange heat with each other, And a porthole is formed in the upper plate so as to communicate with an inner porthole, the method comprising: inserting a brass lead plate between the upper and lower plates and the heat exchange plate (2) to form an assembly (S11); Wherein the copper connector is made of copper (Cu) in an amount of 59.56 to 63.62 wt%, nickel (Ni) in an amount of 0.10 to 0.12 wt%, iron (Fe) in an amount of 0.05 wt%, lead (Pb) in an amount of 0.05 wt% (S12) with or in succession to a brass pearl ring composed of 0.02% to 0.03% by weight of silicon (Si) and 36.0 to 40.0% by weight of zinc (Zn) And a step (S13) of simultaneously brazing the assembly and the connector at 980 to 1050 캜 after charging the assembly into which the connector is inserted into the vacuum brazing furnace.

A method of manufacturing a plate-type heat exchanger having a copper connector according to the present invention is characterized in that a plurality of heat exchange plates are laminated and brazed so that heat and a fluid to be heated exchange heat with each other, and upper and lower plates are attached to the outside of the heat exchange plate, A method for manufacturing a plate-type heat exchanger in which a port hole is formed in an upper plate so as to communicate with an inner port hole, wherein a brass solder plate is inserted between the upper plate and the heat exchange plate (2) (S21); A step (S22) of brazing the assembly at 980 to 1050 占 폚 after charging the assembly into a vacuum brazing furnace; A ring-shaped silver solder composed of a connector, a cylindrical portion 171 and a flange 172 formed on the porthole of the brazed assembly is in contact with the inner surface of the porthole 141 with the outer diameter of the cylindrical portion 171, (S23) of bringing the flange (172) into contact with the upper surface of the upper plate (140) while contacting the outer surface of the connector; And a step (S24) of brazing the connector at 800 to 900 DEG C after charging the assembly in which the connector and the ring-shaped silver solder are inserted into the vacuum brazing furnace.

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The coating of the copper paste or the nickel paste on the heat exchange plate (2) is characterized by spraying or dipping.

The manufacturing method of the plate heat exchanger having the copper connector according to the present invention having the above features uses a welding rod whose content is about 20 times lower than that of stainless steel-copper welding, and the work unit cost is reduced. Since the welding hardness is low due to the same kind of welding, And the labor cost is reduced as skilled workers are unnecessary.

1 is a cross-sectional view illustrating connector formation according to prior art;
2 is a perspective view of a plate heat exchanger having a copper connector according to the present invention;
3 is a flowchart of a method of manufacturing a plate heat exchanger having a copper connector according to the first embodiment of the present invention
4 is a perspective view of a method of manufacturing a plate heat exchanger having a copper connector according to a second embodiment of the present invention
5 is a flowchart of a method of manufacturing a plate heat exchanger having a copper connector according to a second embodiment of the present invention

The term used in the present invention is a general term that is widely used at present. However, in some cases, there is a term selected arbitrarily by the applicant. In this case, the term used in the present invention It is necessary to understand the meaning.

Hereinafter, the technical structure of the present invention will be described in detail with reference to preferred embodiments shown in the accompanying drawings.

As shown in FIG. 2, the plate-type heat exchanger according to the present invention includes a plurality of heat-exchange plates stacked and brazed so that heat and a fluid to be heated exchange heat with each other, and upper and lower plates are attached to the outside of the heat- A first plate 120 constituting a heat exchange plate and a second plate 130 constituting a heat exchange plate are sequentially disposed on the lower plate 110 in order, A heated layer WS through which the heat flows and a heated fluid layer OS through which the heated fluid flows are successively formed between the first plate 120 and the second plate 130, And the upper plate 140 is formed with a porthole 141. The porthole 141 is connected to the heat input connector 151 and the heat outlet connector 152 in a diagonal direction And the heated fluid inlet connector 161 and the heated fluid outlet connector 162 are installed in a diagonal direction with respect to each other so that the first and second plates 120 and And communicates with the heating fluid inflow / outflow connector.

The present invention is characterized in that the connectors 151, 152, 161, and 162 used in the plate heat exchanger are made of cooper.

Considering that a connecting pipe connected to a plate-type heat exchanger at a work site generally employs a cooper member, a conventional stainless steel material connector is replaced with a copper material connector according to the present invention, Conventional stainless-copper welding in connection with piping enables copper-copper welding to be possible. Therefore, it is possible to use 20 times lower amount of silver than stainless steel-copper welding when connecting pipes. So that it is possible to perform rapid welding.

The reason why conventional connectors are made of stainless steel is that the first and second plates (first plate and second plate) constituting the heat exchange plate of the plate-type heat exchanger 120 and 130 are made of stainless steel and the copper plate is used as a filler metal between the stainless steel heat exchange plates to perform brazing welding. Therefore, when the connector is used as a copper material, the connector is also melted at the melting point of the copper plate. It is necessary to adopt a stainless steel material having a melting point higher than that of copper and the same material as the heat exchange plate in order to avoid this.

Therefore, in order to adopt the copper connectors 151, 152, 161 and 162, the filler metal for brazing the copper connectors 151, 152, 161 and 162 has a lower melting point Metal material is adopted.

As such a filler, it is desirable to adopt a brass solder in consideration of ductility, thermal conductivity, thermal expansion, corrosion resistance, strong penetration, and affinity with stainless steel as a base material.

Between the upper and lower plates and the heat exchange plates, brass lead plates of the type (that is, having a flat face) are inserted and brazed to form a single plate heat exchanger.

Normally, silver solder, phosphorus copper solder, german silver solder, aluminum solder or the like having a lower melting point than copper can be adopted in addition to brass lead, It is preferable to adopt a brass solder in consideration of the brazing efficiency.

Further, in order to maximize the brazing efficiency with the stainless steel material, the composition and the composition ratio of the brass solder are 59.56 to 63.62% by weight of copper (Cu), 0.10 to 0.12% by weight of nickel (Ni) 0.05% by weight of lead (Pb), 0.15 to 0.20% by weight of tin (Sn), 0.02 to 0.03% by weight of silicon (Si) and 36.0 to 40.0% by weight of zinc (Zn)

Particularly, addition of silicon (Si) has an effect of increasing fluidity and lowering the melting point, and addition of nickel (Ni) has an effect of increasing bonding properties.

Therefore, even if the brazing material for connector brazing is adopted as brass lead, which is the same material as the brazing material for heat exchange plate brazing, it is possible to ensure the perfection of the plate heat exchanger assembly without loss of brazing efficiency as compared with the conventional copper plating.

Meanwhile, the connector brazing welding material may be selected from materials different from those of the heat exchange plate brazing welding material. In this case, the connector brazing welding material is made of a low melting metal material rather than the heat exchange plate brazing welding material.

This is accomplished by first brazing the heat exchange plate in the process of work and then second brazing the connector.

For this purpose, it is desirable to adopt a silver solder having a melting point lower than that of the brass lead, as the filler material used for the first brazing welding of the heat exchange plate, and the second brazing welding material of the connector.

The silver solder is a silver alloy containing silver-copper-zinc (Ag-Cu-Zn) alloy or cadmium (Cd), nickel (Ni) and tin (Sn) alloy and has good flowability and excellent strength and elongation.

In the meantime, in the present invention, a method of manufacturing a plate heat exchanger having copper connectors by two methods will be described. Preferably, the same heat exchange plate and connector are brazed simultaneously, and the heat exchange plate is brazed first, And brazing welding.

Here, in the heating condition, the heating time is somewhat different depending on the thickness of the heat exchanger (the number of laminated plates), and the heating temperature is always constant regardless of the thickness of the heat exchanger. However, the above-described heating conditions (heating temperature and time) may be somewhat variable depending on the structure and performance of the heat exchanger, and such degree will be within the technical scope of the present invention.

[Example 1]

The method for manufacturing a plate-type heat exchanger according to the first embodiment is characterized in that a plurality of heat-exchanging plates are laminated and brazed so that the heat and the fluid to be heated exchange heat with each other, the upper and lower plates are attached to the outside of the heat- A method of manufacturing a plate-type heat exchanger in which a port hole is formed to communicate with an inner port hole,

A step (S11) of inserting a brass lead plate between the upper and lower plates and the heat exchange plate (2) and stacking them to form an assembly (S11); A step (S12) of inserting the copper connector into the port hole together with or in succession with the brass lead ring; ; And a step (S13) of simultaneously brazing the assembly and the connector at 980 to 1050 ° C for 5 to 10 hours after charging the assembly into which the connector is inserted into the vacuum brazing furnace.

First, in the construction of the heat exchanger, the heat exchange plates are sequentially processed through press processing such as shirring, notching, drawing, piercing and the like to process the heat exchange plates.

Through the process S11, the brass lead plate 190 to be joined to the heat exchange plate and the upper and lower plates is inserted between the heat exchange plate and the upper and lower plates, respectively, and then laminated to form an assembly.

The copper connectors 151, 152, 161, and 162 are inserted into the portholes 141 of the upper plate 140 formed through the pressing process together with the brass pads 170 or in turn through the above process (S12).

Through the above step S13, the assembly in which the connector is inserted is placed in a vacuum brazing furnace, fixed with a jig, heated at 980 to 1050 DEG C for 5 to 10 hours to completely melt the copper paste, The connectors are brazed simultaneously.

As described above, brazing welding is performed in one step of the copper connector, the heat exchange plate, and the upper and lower plates at the same time, thereby improving the efficiency of the process.

[Example 2]

The method for manufacturing a plate-type heat exchanger according to the second embodiment is characterized in that a plurality of heat exchange plates are laminated and brazed so that heat and a fluid to be heated exchange heat with each other, upper and lower plates are attached to the outside of the heat exchange plate, (S21) of forming an assembly by inserting a brass lead plate between the upper and lower plates and the heat exchange plate (2) and stacking the brass lead plates, the method comprising: forming a porthole for communicating with an inner porthole; A step (S22) of brazing the assembly for 5 to 10 hours at 980 to 1050 占 폚 after charging the assembly into a vacuum brazing furnace; Inserting a connector and a ring-type silver halide into the porthole of the brazed assembly (S23); And a step (S24) of brazing the connector at 800 to 900 DEG C for 3 to 5 hours after charging the assembly into which the connector and the ring-shaped silver solder are inserted into the vacuum brazing furnace.

First, in the construction of the heat exchanger, the heat exchange plates are sequentially processed through press processing such as shearing, notching, drawing, piercing, and the like to sequentially process the heat exchange plates, A silver solder to be inserted into the port hole 141 is processed into a ring shape.

Through the above process (S21), the brass lead plate 190 to be joined to the heat exchange plate and the upper and lower plates is inserted between the heat exchange plate and the upper and lower plates, respectively, and then laminated to form an assembly.

Through the above-described process (S22), the assembly in which the connector is not inserted is charged into the vacuum brazing furnace, fixed with a jig, heated at 980 to 1050 DEG C for 5 to 10 hours to completely melt the brass lead plate, Only the plate and upper and lower plates are brazed first.

Through the above-described process (S23), the ring-type silver solder 170 is inserted into the port hole, and the connector is inserted into the ring-type silver solder to complete the brazing preparation of the connector.

At this time, the ring silver halide can be inserted into the connector, inserted into the port hole, or inserted at the same time, depending on the convenience of the work process.

3, the ring-type silver solder 170 is composed of a cylindrical portion 171 and a flange 172 formed on the cylindrical portion 171. The outer diameter of the cylindrical portion 171 is in contact with the inner surface of the port hole 141, The flange 172 is positioned so as to be in contact with the upper surface of the upper plate 140 while the flange 172 contacts the outer surface of the connector.

To this end, the connector has flanges (153, 163) formed on its outer surface to face the flange (172), thereby maximizing the brazing area.

Through the above-described process (S24), the assembly in which the connector and the ring-shaped silver solder are inserted is charged into a vacuum brazing furnace and fixed with a jig, and then heated at 800 to 900 DEG C for 3 to 5 hours to completely melt the silver solder, .

After assembling the heat exchanger plate and the upper and lower plates by brazing using the brass lead plate, the assembling efficiency is maximized, and then the copper connector is drastically lowered to the low melting point temperature (800 To 900 < 0 > C), it is possible to safely braze the copper connector to the assembly without deteriorating the brazing performance of the assembly.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention. Various modifications and variations will be possible without departing from the spirit of the invention. Therefore, the scope of the present invention should be construed as being covered by the scope of the appended claims, and technical scope within the scope of equivalency thereof should be construed as being included in the scope of the present invention.

110: lower plate 120: first plate
130: second plate 140: upper plate
151: Fruit inflow connector 152: Fruit inflow connector
153: Flange 161: Fluid inlet connector
162: Heating fluid outlet connector 163: Flange
170: ring type silver halide discharge 171:
172: flange
190: brass lead plate

Claims (7)

A plate heat exchanger is manufactured in which a plurality of heat exchange plates are stacked and brazed so that heat and fluid to be heated exchange heat with each other, upper and lower plates are attached to the outside of the heat exchange plate, and a port hole is formed in the upper plate to communicate with the internal port holes In the method,
A step (S11) of inserting a brass lead plate between the upper and lower plates and the heat exchange plate (2) and stacking them to form an assembly (S11);
Wherein the copper connector is made of copper (Cu) in an amount of 59.56 to 63.62 wt%, nickel (Ni) in an amount of 0.10 to 0.12 wt%, iron (Fe) in an amount of 0.05 wt%, lead (Pb) in an amount of 0.05 wt% (S12) with or in succession to a brass pearl ring composed of 0.02% to 0.03% by weight of silicon (Si) and 36.0 to 40.0% by weight of zinc (Zn)
(S13) of simultaneously brazing the assembly and the connector at 980 to 1050 DEG C after charging the assembly into which the connector is inserted into the vacuum brazing furnace (S13).
A plate heat exchanger is manufactured in which a plurality of heat exchange plates are stacked and brazed so that heat and fluid to be heated exchange heat with each other, upper and lower plates are attached to the outside of the heat exchange plate, and a port hole is formed in the upper plate to communicate with the internal port holes In the method,
A step (S21) of forming an assembly by inserting a brass solder plate between the upper and lower plates and the heat exchange plate (2) and stacking them;
A step (S22) of brazing the assembly at 980 to 1050 占 폚 after charging the assembly into a vacuum brazing furnace;
A ring-shaped silver solder composed of a cylindrical portion 171 and a flange 172 formed on the cylindrical portion 171 is connected to the port hole of the brazed assembly. The outer diameter of the cylindrical portion 171 is in contact with the inner surface of the port hole 141, (S23) of placing the flange 172 in contact with the upper surface of the upper plate 140 while the inner diameter is in contact with the outer surface of the connector;
And a step (S24) of brazing the connector to 800 to 900 占 폚 after charging the assembly having the connector and the ring-shaped silver solder inserted therein into the vacuum brazing furnace (S24).
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KR1020160005301A 2016-01-15 2016-01-15 Plate Heat Exchangers having copper connectors's manufacturing method KR101646484B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160005301A KR101646484B1 (en) 2016-01-15 2016-01-15 Plate Heat Exchangers having copper connectors's manufacturing method
PCT/KR2016/008381 WO2017122893A1 (en) 2016-01-15 2016-07-29 Plate-type heat exchanger having copper connector and method for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160005301A KR101646484B1 (en) 2016-01-15 2016-01-15 Plate Heat Exchangers having copper connectors's manufacturing method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761156A (en) * 2020-07-22 2020-10-13 厦门福鑫特工贸有限公司 Brazing method for large computer radiator
EP3674645B1 (en) 2018-12-28 2021-08-04 Danfoss A/S Plate heat exchanger

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108188524A (en) * 2018-01-16 2018-06-22 向海星 A kind of steel stainless steel composite plate plate type radiator
CN112621017A (en) * 2020-12-09 2021-04-09 广东澳森热交换系统有限公司 Brass solder and brazing process for welding carbon steel and red copper by using same

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06328240A (en) * 1993-05-18 1994-11-29 Showa Alum Corp Method for mutually connecting pipes
KR19990079555A (en) 1998-04-07 1999-11-05 김대원 Plate heat exchanger
JP2001116483A (en) * 1999-10-22 2001-04-27 Ebara Corp Plate heat-exchanger
JP2001124481A (en) * 1999-10-29 2001-05-11 Denso Corp Heat exchanger
KR100514696B1 (en) 2003-04-14 2005-09-14 오철주 treatment heat exchanger of brazing
KR200409691Y1 (en) 2005-10-28 2006-03-03 오철주 heat exchanger a board type
KR20110059768A (en) * 2008-10-16 2011-06-03 알파 라발 코포레이트 에이비 Heat exchanger
KR101214014B1 (en) 2012-01-18 2012-12-20 주식회사 신우오에스 Fusion method of plate type heat exchanger

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101194004B1 (en) * 2010-08-24 2012-10-24 주식회사 동화엔텍 Brazing method and structure of connecting tube in radiator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06328240A (en) * 1993-05-18 1994-11-29 Showa Alum Corp Method for mutually connecting pipes
KR19990079555A (en) 1998-04-07 1999-11-05 김대원 Plate heat exchanger
JP2001116483A (en) * 1999-10-22 2001-04-27 Ebara Corp Plate heat-exchanger
JP2001124481A (en) * 1999-10-29 2001-05-11 Denso Corp Heat exchanger
KR100514696B1 (en) 2003-04-14 2005-09-14 오철주 treatment heat exchanger of brazing
KR200409691Y1 (en) 2005-10-28 2006-03-03 오철주 heat exchanger a board type
KR20110059768A (en) * 2008-10-16 2011-06-03 알파 라발 코포레이트 에이비 Heat exchanger
KR101214014B1 (en) 2012-01-18 2012-12-20 주식회사 신우오에스 Fusion method of plate type heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3674645B1 (en) 2018-12-28 2021-08-04 Danfoss A/S Plate heat exchanger
CN111761156A (en) * 2020-07-22 2020-10-13 厦门福鑫特工贸有限公司 Brazing method for large computer radiator

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