KR102115924B1 - Plate type heat exchanger and a method for manufacturng the same - Google Patents

Abstract

The present invention relates to a plate heat exchanger and a method for manufacturing the same.
The plate heat exchanger according to an embodiment of the present invention includes an adhesive provided between a plurality of heat exchange plates and composed of a glass frit containing P ₂ O ₅ , TiO ₂ and a group I oxide, and the plurality of heat exchange plates Can be simply combined by the adhesive.

Description

Plate heat exchanger and its manufacturing method {Plate type heat exchanger and a method for manufacturng the same}

The present invention relates to a plate heat exchanger and a method for manufacturing the same.

A heat exchanger is a device that guides heat exchange between at least two fluids, and may include, for example, a plate heat exchanger. The plate heat exchanger includes at least two or more flow paths through which fluids forming different temperatures flow, and the two or more flow paths may be alternately arranged.

The plate-type heat exchanger has an advantage of high heat exchange efficiency compared to other heat exchangers, and its structure can be reduced in size and weight.

In connection with such a plate heat exchanger, the following prior art is introduced.

1. Public patent number (published date): 10-2008-0006122 (January 16, 2008)

2. Name of invention: Plate heat exchanger and manufacturing method

According to the prior art, the following problems exist.

First, the conventional plate-type heat exchanger is manufactured through a process of performing brazing welding after laminating a plurality of heat exchange plates and a metal for brazing, but using such a manufacturing method has a disadvantage of high manufacturing cost and low production efficiency.

Second, when the fluid flows in the plate heat exchanger, the foreign matter contained in the fluid is attached to the brazed welded portion, contamination occurs in the heat exchange plate, and accordingly corrosion of the plate heat exchanger appears and heat exchange performance is deteriorated. .

The present invention has been proposed to solve this problem, and an object of the present invention is to provide a plate-type heat exchanger and a method of manufacturing the same by combining heat exchange plates using adhesives, thereby reducing manufacturing costs.

In addition, an object of the present invention is to provide a plate-type heat exchanger capable of improving adhesive strength by constructing an adhesive using a glass composition and a method for manufacturing the same.

In addition, by using the hydrophilicity of the glass composition, it is an object to provide a plate heat exchanger and a method of manufacturing the same, which can prevent the foreign matter contained in the fluid from accumulating on the heat exchange plate even if the fluid flows in the plate heat exchanger.

The plate heat exchanger according to an embodiment of the present invention includes an adhesive provided between a plurality of heat exchange plates and composed of a glass frit containing P ₂ O ₅ , TiO ₂ and a group I oxide, and the plurality of heat exchange plates Can be simply combined by the adhesive.

The P ₂ O ₅ is contained by 20% by weight to 30% by weight relative to the entire glass frit, the TiO ₂ is contained by 10% by weight to 20% by weight relative to the entire glass frit, and the Group I oxide is 15 wt% to 30 wt% based on the entire glass frit, it is possible to improve the strength of the plurality of heat exchange plates.

The glass frit further includes SiO ₂ , and the SiO ₂ may be included in an amount of 10 to 20% by weight relative to the entire glass frit.

The glass frit is a B ₂ O, and further comprises a B ₂ O _{3 3} may be contained by 5% to 15% by weight by weight of the total of the glass frit.

The glass frit is the Al ₂ O, Al ₂ O ₃ contains more ₃ can be contained as much as 10% to 30% by weight of the total of the glass frit.

The glass frit may further include a fluorine (F) compound, and the fluorine (F) compound may include at least one metal oxide of NaF and AlF ₃ .

The fluorine (F) compound may be included in an amount of 0.1 to 5% by weight relative to the entire glass frit.

The glass frit is the ZrO _2, and further comprising a ZrO ₂ may be contained by 1 wt% to 5 wt.% Based on the total of the glass frit.

The glass frit may further include a Group II oxide, and the Group II oxide may include at least one metal oxide of CaO, MgO, and BaO.

The group II oxide may be included in an amount of 0.1 to 10% by weight relative to the entire glass frit.

A plate-shaped heat exchanger according to another aspect includes: a first flat portion extending on both sides of the unevenness and forming a flat surface; An inclined portion extending obliquely from the first flat portion; And a second planar portion extending outward from the inclined portion and forming a plane.

The adhesive is provided on the unevenness, the first planar portion, and the inclined portion, so that a stable coupling of the plurality of heat exchange plates can be achieved.

The adhesive may include a glass composition to improve adhesive strength.

A method of manufacturing a plate heat exchanger according to another aspect includes spraying or dipping an adhesive comprising a glass frit on an upper surface of a first plate; Stacking a second plate on the upper side of the first plate to produce a plate assembly; And heating the plate assembly to melt the adhesive, thereby manufacturing a plate heat exchanger by a simple process.

According to the present invention according to the above-described solution, it is possible to lower the manufacturing cost and shorten the manufacturing time by combining the heat exchange plate using an adhesive.

In addition, by constructing the adhesive using the glass composition, it is possible to improve the adhesive strength and shear strength, and accordingly, there is an advantage that the pressure strength and the breaking pressure that can withstand the internal pressure of the plate heat exchanger can be increased.

In addition, by using the hydrophilicity of the glass composition, even if the fluid flows in the plate heat exchanger, there is an effect that foreign matters contained in the fluid can be prevented from being accumulated on the heat exchange plate. That is, the cleanability of the glass composition or the heat exchange plate can be improved.

In addition, even if the adhesive is applied to the entire area of the heat exchange plate, there is an advantage that the inner flow path of the heat exchange plate may not be blocked since it can be adhered at the contact portions of the two plates.

1 is a side view showing the configuration of a plate heat exchanger according to an embodiment of the present invention.
2 is a view showing the configuration of a heat exchange plate constituting a plate heat exchanger according to an embodiment of the present invention.
3 is an exploded view showing the configuration of a heat exchange plate according to an embodiment of the present invention.
4 is a view showing a state in which two heat exchange plates are bonded according to an embodiment of the present invention.
5 is a cross-sectional view taken along V-V 'of FIG. 4.
6 is a flow chart showing a method of manufacturing a plate heat exchanger according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art to understand the spirit of the present invention may easily propose other embodiments within the scope of the same spirit.

1 is a side view showing the configuration of a plate heat exchanger according to an embodiment of the present invention.

Referring to FIG. 1, a plate heat exchanger 10 according to an embodiment of the present invention includes a plate package including a plurality of heat exchange plates 100 and two end plates 20 and 30 provided on both sides of the plate package. ) Is included. For example, the heat exchange plate 100 and the two end plates 20 and 30 may have a quadrangular panel shape.

The heat exchange plate 100 may be formed of a metal material having excellent thermal conductivity and excellent pressure resistance against pressure. For example, the heat exchange plate 100 may be made of stainless steel.

The plurality of heat exchange plates 100 are arranged to be stacked in the front-rear direction, and between the plurality of heat exchange plates 100, a flow path through which a fluid flows is formed. The flow path includes a first flow path through which the first fluid flows and a second flow path through which the second fluid flows. The first and second flow paths may be alternately arranged in sequence.

The two end plates 20 and 30 include a first end plate 20 provided on one side of the plate package and a second end plate 30 provided on the other side of the plate package. That is, between the two end plates 20 and 30, the plate package may be installed.

The two end plates 20 and 30 may be fastened by a fastening member 40. A bolt may be included in the fastening member 40. The plate package may be pressed by the two end plates 20 and 30. A plurality of fastening members 40 may be provided, and may be provided at upper and lower portions of the plate heat exchanger 10, respectively.

In the plate heat exchanger (10), a first inlet / outlet port (60) for allowing a first fluid to flow into or out of the plate package and a second inlet / outlet for a second fluid to flow into or out of the plate package The port 70 is further included. The first entry / exit port 60 and the second entry / exit port 70 may be coupled to the second end plate 30. The first and second fluids have a temperature difference and may exchange heat with each other.

Two first input / output ports 60 are provided, and the two first input / output ports 60 may be disposed on upper and lower portions of the second end plate 30, respectively. In addition, two second input / output ports 70 are provided, and the two second input / output ports 70 may be disposed on upper and lower portions of the second end plate 30, respectively.

For example, the two first entry / exit ports 60 may be disposed on the first and fourth corner sides arranged diagonally among the four corners of the second end plate 30. In addition, the two second entry / exit ports 70 may be disposed on the second and third corner sides arranged in different diagonal directions among the four corners of the second end plate 30.

2 is a view showing the configuration of a heat exchange plate constituting a plate-type heat exchanger according to an embodiment of the present invention, Figure 3 is an exploded view showing the configuration of a heat exchange plate according to an embodiment of the present invention.

2 and 3, in the heat exchange plate 100 according to an embodiment of the present invention, the plate body 110 having a shape of a substantially quadrangular panel and the four corners of the plate body 110 are arranged, A plurality of port openings 120, 130, 140, and 150 are provided to communicate fluid flow through the first and second in / out ports 60, 70.

The plurality of port openings 120, 130, 140, and 150 include first and fourth port openings 120 and 150 formed at positions corresponding to the two first entry / exit ports 60. That is, the first and fourth port openings 120 and 150 may be arranged diagonally to each other.

The first fluid flows from the front to the rear of the heat exchange plate 100 through the first port opening 120, and flows from the rear to the front of the heat exchange plate 100 through the fourth port opening 150. can do.

The plurality of port openings 120, 130, 140, and 150 include second and third port openings 130 and 140 formed at positions corresponding to the two second entry / exit ports 70. That is, the second and third port openings 130 and 140 may be arranged in different diagonal directions.

The second fluid flows forward from the rear of the heat exchange plate 100 through the second port opening 130, and flows forward from the front of the heat exchange plate 100 through the third port opening 140. can do.

The front surface of the plate body 110 includes irregularities. In detail, the unevenness includes a protrusion 112 protruding forward from the front surface of the plate body 110 and a depression 114 recessed rearward from the front surface of the plate body 110. A plurality of protrusions 112 and depressions 114 may be provided, and may be alternately arranged. In addition, the unevenness may be included on the rear surface of the plate body 110.

For example, a herringbone pattern may be formed on front and rear surfaces of the plate body 110 by the plurality of protrusions 112 and the plurality of depressions 114.

The unevenness of the plate body 110 may be provided to contact the unevenness provided in another adjacent heat exchange plate 100. In addition, an adhesive portion 210 (see FIG. 5) may be provided between the contact irregularities. The adhesive portion 210 constitutes a part of the adhesive 200.

The adhesive 200 includes a glass frit. In detail, the adhesive 200 is composed of a paste-shaped glass composition (enamel composition), and may be dispensed or applied to the front surface of the plate body 110. For example, the adhesive 200 may be sprayed or dipping onto the plate body 110 in a liquid form having a predetermined viscosity.

Also, a debinding process may be performed on the plate body 110 provided with the adhesive 200 to remove a binder included in the adhesive 200. The debinding process may be understood as a process of vaporizing the binder by exposing the plate body 110 provided with the adhesive 200 to an environment at a preset temperature.

The configuration of the adhesive 200 will be described in more detail.

The adhesive 200 may be prepared by mixing a glass powder containing a glass composition and a binder, and a solvent.

The glass composition according to the embodiment may include a glass frit including P ₂ O ₅ , TiO ₂ and a group I oxide.

The P ₂ O ₅ may be included in an amount of about 30% by weight or less with respect to the entire glass frit. In detail, the P ₂ O ₅ may be included by about 20% to about 30% by weight relative to the entire glass frit. More specifically, the P ₂ O ₅ may be included by about 22% to about 28% by weight relative to the entire glass frit.

The P ₂ O ₅ is included in the glass composition, and may improve the cleaning performance of the glass composition. When the P ₂ O ₅ is included in an amount of less than about 20% by weight relative to the entire glass composition, the cleaning performance of the glass composition may be deteriorated. In addition, when the P ₂ O ₅ is included in an amount exceeding about 30% by weight relative to the entire glass composition, thermal properties of the glass composition may be deteriorated, and the vitrification of the glass composition may be weakened.

The TiO ₂ may be included in an amount of about 20% by weight or less with respect to the entire glass frit. In detail, the TiO ₂ may be included in an amount of 10% to 20% by weight with respect to the entire glass frit. In more detail, the TiO ₂ may be included in an amount of 12 to 18% by weight relative to the entire glass frit. The TiO ₂ improves the water resistance of the glass composition.

The group I oxide may include at least one metal oxide of Na ₂ O, K ₂ O, and Li ₂ O. In detail, the group I oxide may include Na ₂ O, K ₂ O, and Li ₂ O. That is, the glass frit may include all of Na ₂ O, K ₂ O, and Li ₂ O.

The group I oxide may be included in an amount of about 30% by weight or less with respect to the entire glass frit. In detail, the group I oxide may include about 15% to about 30% by weight relative to the entire glass frit. More specifically, the Group I oxide may include about 20% to about 25% by weight relative to the entire glass frit.

For example, if the said glass frit contains all of the Na ₂ O, K ₂ O and Li ₂ O, may be included, such as to the Na ₂ O, K ₂ O and Li ₂ O is.

The Na ₂ O may be included in an amount of about 5% to about 10% by weight with respect to the entire glass frit. In detail, the Na ₂ O may be included in an amount of about 6% to about 9% by weight with respect to the entire glass frit.

The K ₂ O may be included in an amount of about 10% to about 20% by weight relative to the entire glass frit. In detail, the K ₂ O may be included in an amount of about 12% to about 18% by weight with respect to the entire glass frit.

The Li ₂ O may be included in an amount of about 0.1% to about 1.5% by weight with respect to the entire glass frit. In detail, the Li ₂ O may be included by about 0.5% to about 1% by weight relative to the entire glass frit.

The glass frit may further include SiO ₂ .

The SiO ₂ may be included in an amount of about 20% by weight or less with respect to the entire glass frit. In detail, the SiO ₂ may be included by about 10% to about 20% by weight relative to the entire glass frit. More specifically, the SiO ₂ may be included by about 12% to about 18% by weight relative to the entire glass frit.

The SiO ₂ is included in the glass composition, can form a glass structure of the glass composition, can improve the skeleton of the glass structure, can improve the acid resistance of the glass frit.

When the SiO ₂ is contained in an amount of less than about 10% by weight relative to the entire glass frit, the glass structure of the glass composition may be deteriorated and adhesive strength of the adhesive may be deteriorated. In addition, when the SiO ₂ is contained in excess of about 20% by weight relative to the entire glass frit, the cleaning performance of the glass frit may be deteriorated.

The glass frit may further include B ₂ O ₃ .

The B ₂ O ₃ may be included in an amount of about 15% by weight or less with respect to the entire glass frit. In detail, the B ₂ O ₃ may be included in an amount of about 5% to about 15% by weight with respect to the entire glass frit. More specifically, the B ₂ O ₃ may be included by about 7% to about 13% by weight relative to the entire glass frit.

The B ₂ O ₃ may perform a function of expanding the vitrification region of the glass frit and appropriately adjusting the coefficient of thermal expansion of the glass composition according to the embodiment.

When the B ₂ O ₃ is included in an amount of less than about 5% by weight with respect to the entire glass frit, the vitrification region is reduced to degrade the glass structure, and thus the adhesive strength of the adhesive may be deteriorated. In addition, when the B ₂ O ₃ is contained in excess of about 15% by weight relative to the entire glass frit, the cleaning performance of the glass frit may be deteriorated.

The glass frit may further include Al ₂ O ₃ .

The Al ₂ O ₃ may be included in an amount of about 30% by weight or less with respect to the entire glass frit. In detail, the Al ₂ O ₃ may be included by about 10% to about 30% by weight relative to the entire glass frit. More specifically, the Al ₂ O ₃ may be included by about 15% to about 25% by weight relative to the entire glass frit.

The glass frit may further include ZrO ₂ .

The ZrO ₂ may be included in an amount of about 5% by weight or less with respect to the entire glass frit. In detail, the ZrO ₂ may be included by about 1% to about 5% by weight relative to the entire glass frit. More specifically, the ZrO ₂ may be included by about 2% to about 4% by weight relative to the entire glass frit. The ZrO ₂ may increase the chemical resistance and durability of the glass composition.

The Al ₂ O ₃ and the ZrO ₂ may improve the chemical durability of the glass frit. In particular, the Al ₂ O ₃ and the ZrO ₂ serve to supplement the low chemical durability of the alkaline _four-space glass structure formed by P ₂ O ₅ , Na ₂ O, K ₂ O and LiO ₂ through structural stabilization. Can be.

The glass frit may further include a fluorinated compound. The fluorinated compound may be selected from NaF or AlF ₃ . In detail, the fluorinated compound may include NaF and AlF ₃ . That is, the glass frit may include both NaF and AlF ₃ .

The fluorinated compound may function to properly adjust the surface tension of the adhesive formed by the glass composition. In addition, the vitrification region of the glass frit can be enlarged by the fluorinated compound.

The fluorinated compound may be included in an amount of about 5% by weight or less with respect to the entire glass frit. In detail, the fluorinated compound may be included in an amount of about 0.1% to about 5% by weight with respect to the entire glass frit. In detail, the fluorinated compound may be included in an amount of about 1% to about 4% by weight relative to the entire glass frit.

When the fluorinated compound is contained in an amount of less than about 0.1% by weight relative to the entire glass frit, the vitrification region is reduced to degrade the glass structure, and thus the adhesive strength of the adhesive may be deteriorated.

The glass frit may further include a group II oxide. The group II oxide may be selected from CaO, BaO or MgO. In detail, the group II oxide may include CaO, BaO, and MgO. That is, the glass frit may include CaO, BaO and MgO.

The group II oxide may be included in an amount of about 10% by weight or less with respect to the entire glass frit. In detail, the Group II oxide may be included in an amount of about 0.1% to about 10% by weight with respect to the entire glass frit. More specifically, the Group II oxide may be included in an amount of about 3% by weight to about 7% by weight with respect to the entire glass frit.

The group II oxide may improve durability of the glass composition.

When the Group II oxide is included in an amount of less than about 0.1% by weight relative to the entire glass frit, chemical resistance and durability of the glass composition may be reduced. In addition, when the Group II oxide is included in an amount exceeding about 10% by weight relative to the entire glass frit, the cleaning performance of the glass frit may be deteriorated.

In summary, the range of weight percent of the components constituting the above-mentioned glass composition is preferably as shown in Table 1 below.

Composition (ingredient) weight% P ₂ O ₅ 22 to 28 TiO ₂ 12 to 18 SiO ₂ 12 to 18 Al ₂ O ₃ 15 to 25 Na ₂ O 6.0 to 9.0 K ₂ O 12 to 18 Li ₂ O 0.5 to 1.0 B ₂ O ₃ 7.0 to 13.0 ZrO ₂ 2.0 to 4.0 Fluorinated compounds (NaF or AlF _{3 )} 1.0 to 4.0 Group II oxide (CaO or BaO or MgO) 3.0 to 7.0

4 is a view showing a state in which two heat exchange plates are bonded according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view taken along V-V 'of FIG. 4.

The plurality of heat exchange plates 100 according to the embodiment of the present invention are stacked in the front-rear direction and may be combined by the adhesive 200 provided therebetween. As an example, FIG. 4 shows a state in which two heat exchange plates 100a and 100b are stacked and combined. The two heat exchange plates 100a and 100b include a first plate 100a and a second plate 100b coupled to the front surface of the first plate 100a.

An adhesive 200 for adhesion to the second plate 100b may be provided on the front surface of the first plate 100a. The adhesive 200 may be coated on the first plate 100a by spraying the glass composition described above.

Unevenness may be included in front and rear surfaces of the first plate 100a and the second plate 100b.

In detail, the first plate 100a includes irregularities 112a and 114a in which protruding and recessed structures are alternately formed. The unevenness 112a, 114a includes a first protrusion 112a and a first depression 114a. The plurality of first protrusions 112a and the plurality of first depressions 114a may be alternately arranged to form a herringbone pattern. The irregularities 112a and 114a may be formed on both the front and rear surfaces of the first plate 100a.

The second plate 100b includes irregularities 112b and 114b in which protruding and recessed structures are alternately formed. The unevenness 112b, 114b includes a second protrusion 112b and a second depression 114b. The plurality of second protrusions 112b and the plurality of second depressions 114b may be alternately arranged to form a herringbone pattern.

The second protrusion 112b of the second plate 100b may be located in front of the first depression 114a of the first plate 100a.

The second depression 114b may be located in front of the first protrusion 112a of the first plate 100a. In addition, the second depression 114b may be adhered to the first protrusion 112a. That is, the second depression 114b may be provided to contact the first protrusion 112a by the adhesive 200.

In summary, the adhesive 200 includes an adhesive portion 210 for bonding the first plate 100a and the second plate 100b. The adhesive portion 210 may be provided between the second recessed portion 114b and the first protrusion 112a. The left and right widths of the adhesive portion 210 may form about 3 mm.

Due to the configuration of the first and second plates 100a and 100b forming the herringbone pattern, a plurality of the adhesive parts 210 are provided, and the plurality of adhesive parts 210 may be spaced apart in the left and right directions. By the configuration of the plurality of adhesive parts 210, the first and second plates 100a and 100b may be firmly coupled.

The space defined by the second protrusion 112b, the first depression 114a, and the two adhesive portions 210 on both sides forms a flow path 118 through which the fluid flows.

In the plate body 110 of the first plate 100a, the first flat portion 111a is formed to be flat on both sides of the irregularities 112a and 114a, and is inclined outwardly from the first flat portion 111a. An extended inclined portion 113a and a second flat portion 115a extending outward from the inclined portion 113a and configured as a plane are included.

The adhesive 200 is provided on the front surface of the first plate 100a. In detail, the adhesive 200 may be provided on the first flat portion 111a of the first plate 100a, the inclined portion 113a, and the unevenness 112a, 114a. Then, the adhesive 200 may be provided to have a height of about 3 ~ 5mm from the front surface of the first plate (100a).

In the plate body 110 of the second plate 100b, the first flat portion 111b is formed of planes on both sides of the irregularities 112a and 114a, and is inclined outwardly from the first flat portion 111b. An extended inclined portion 113b and a second planar portion 115b extending outward from the inclined portion 113b and configured as a plane are included.

The first flat portion 111b, the inclined portion 113b, and the second flat portion 115b of the second plate 100b are the first flat portion 111a and the inclined portion 113a of the first plate 100a. ) And the second flat portion 115a.

In addition, the first flat portion 111b and the inclined portion 113b of the second plate 100b are the first flat portion 111a and the inclined portion of the first plate 100a by the adhesive 200 ( 113a).

According to this configuration, the adhesive 200 is provided in most areas of the first plate 100a, and in particular, the adhesive 200 is provided on the front surface of the first plate 100a forming the flow path 118. Therefore, a phenomenon in which foreign substances contained in the fluid accumulate in the heat exchange plate 100 can be prevented. Accordingly, the heat exchange plate 100 may be maintained in a clean state, and damage caused by corrosion may be prevented.

In addition, by being provided with an adhesive composed of a glass composition, the adhesive strength, in particular, the compressive strength compressed in the front-rear direction is improved, and the withstand strength that can withstand the internal pressure of the plate heat exchanger can be improved.

6 is a flow chart showing a method of manufacturing a plate heat exchanger according to an embodiment of the present invention.

Referring to FIG. 6, first, a first plate 100a is prepared. The first plate 100a may be provided in a washed state (S11).

The adhesive 200 is supplied to the first plate 100a. For example, the adhesive 200 may be applied to the front surface of the first plate 100a by spraying or dipping (S12).

The first plate 100a is heated, and in this process, the binder included in the adhesive 200 may be vaporized. Then, the adhesive 200 may be stably coated on the first plate 100a (S13).

The second plate 100b is stacked on the first plate 100a, and in the process, the second plate 100b may contact the adhesive 200 provided on the first plate 100a. . The assembly of the first and second plates 100a may be referred to as a “plate assembly” (S14).

The plate assembly can be heated. When the plate assembly is heated, the adhesive 200 may be melted and the plate assembly may be adhered. And, when the cooling of the plate assembly is made, a solid bonding of the first and second plates 100a and 100b may be achieved. By such a simple manufacturing method, coupling of the plate assembly can be reliably implemented (S15).

And, by performing the process described in S12 to S15 to the combined plate assembly, it is possible to adhere additional plates. By repeating this process, a plate package composed of a plurality of heat exchange plates can be manufactured.

Another example is proposed.

By stacking multiple heat exchange plates at once and melting and cooling the adhesive provided on each heat exchange plate, the plate package may be manufactured at once.

10: plate heat exchanger 20,30: end plate
40: fastening member 60,70: entry and exit port
100: heat exchange plate 110: plate body
112: protrusion 111a: first flat portion
113a: slope 114: groove
115a: 2nd flat part 120 ~ 150: Port opening
200: bonding portion 210: bonding portion

Claims (15)

A plurality of stacked heat exchange plates; And
It is provided on the front surface of the heat exchange plate, and includes an adhesive composed of a glass frit containing P2O5, TiO2 and a group I oxide,
The P2O5 is contained by 20 to 30% by weight relative to the entire glass frit,
The TiO2 is contained in an amount of 10 to 20% by weight relative to the entire glass frit,
The Group I oxide is contained in an amount of 15% to 30% by weight with respect to the entire glass frit,
The plurality of heat exchange plates include a first plate and a second plate,
The first plate and the second plate,
Irregularities in which a plurality of protrusions and depressions are alternately arranged;
A first planar portion extending to both sides of the irregularity and constituting a plane;
An inclined portion extending obliquely from the first flat portion; And
It extends outwardly from the inclined portion, and includes a second plane portion constituting the plane,
The adhesive is provided on the front surface of the protrusion of the first plate, the front surface of the recessed portion, the front surface of the first flat portion, and the front surface of the inclined portion,
A plate heat exchanger, characterized in that the protrusion of the first plate and the depression of the second plate are adhered to form a flow path. According to claim 1,
The group I oxide is a plate heat exchanger comprising at least one of Na ₂ O, K ₂ 0 and Li ₂ O. According to claim 2,
The glass frit further comprises SiO ₂ ,
The SiO ₂ is plate-type heat exchanger that is contained by 10 to 20% by weight relative to the entire glass frit. The method of claim 3,
The glass frit further comprises B ₂ O ₃ ,
The B ₂ O ₃ is a plate-type heat exchanger that is included by 5 to 15% by weight relative to the entire glass frit. The method of claim 4,
The glass frit further comprises Al ₂ O ₃ ,
The Al ₂ O ₃ is a plate-type heat exchanger that is contained by 10 to 30% by weight relative to the entire glass frit. The method of claim 5,
The glass frit further comprises a fluorine (F) compound,
The fluorine (F) compound includes at least one metal oxide of NaF and AlF ₃ ,
The fluorine (F) compound is 0.1 to 5% by weight relative to the entire glass frit plate heat exchanger. The method of claim 4,
The glass frit further comprises ZrO ₂ ,
The ZrO ₂ is a plate-type heat exchanger included by 1 to 5% by weight relative to the entire glass frit. According to claim 1,
The glass frit further comprises a group II oxide,
The group II oxide includes at least one metal oxide of CaO, MgO, and BaO,
The group II oxide is 0.1 to 10% by weight of the plate-like heat exchanger with respect to the entire glass frit. delete delete delete delete Spraying or dipping an adhesive comprising a glass frit onto the top surface of the first plate;
Heating the first plate provided with the adhesive to vaporize the binder included in the adhesive;
Manufacturing a plate assembly by stacking a second plate on an upper side of the first plate; And
Heating the plate assembly to melt the adhesive,
On the first plate,
Irregularities in which a plurality of protrusions and depressions are alternately arranged;
A first planar portion extending to both sides of the irregularity and constituting a plane;
An inclined portion extending obliquely from the first flat portion; And
It extends outward from the inclined portion, and includes a second plane portion constituting the plane,
The adhesive is provided on the irregularities, the first flat portion and the inclined portion,
The adhesive is provided on the front surface of the protrusion of the first plate, the front surface of the recessed portion, the front surface of the first flat portion, and the front surface of the inclined portion,
Method of manufacturing a plate-type heat exchanger, characterized in that the protrusion of the first plate and the depression of the second plate are bonded to form a flow path. The method of claim 13,
The glass frit, P ₂ O ₅ , TiO ₂ and a method of manufacturing a plate-type heat exchanger containing a group I oxide. delete

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