CN1190644C

CN1190644C - Plate type heat exchanger

Info

Publication number: CN1190644C
Application number: CNB008004048A
Authority: CN
Inventors: 井上修行; 松原利男
Original assignee: Ebara Corp
Current assignee: Ebara Corp
Priority date: 1999-03-24
Filing date: 2000-03-23
Publication date: 2005-02-23
Anticipated expiration: 2020-03-23
Also published as: EP1085286A4; WO2000057121A1; CN1297523A; EP1085286A1

Abstract

A plate type heat exchanger capable of exchanging heat by laminating plates and passing two types of fluids between the plates alternately, wherein a heat exchange element is formed of a set of two plates having recessed and projected parts and an opening part at both ends in longitudinal direction which are overlapped with each other at their peripheral edges, a plurality of heat exchange elements are formed by overlapping the opening parts with each other, a space between two sheets of plates forming the heat exchange elements is used as a first fluid path, a space between the heat exchange elements is used as a path for another fluid which is in the heat exchange relation with the first fluid, whereby the plates are used as the heat transfer surface for both fluids, and the second fluid path which is in contact with that element at its peripheral edge part and sealed is formed when the heat exchange elements are overlapped with each other.

Description

Heat-exchangers of the plate type

Technical field

The present invention relates to heat-exchangers of the plate type, particularly relate to the evaporimeter that is applicable to the refrigerator that adopts low pressure refrigerant, low-temperature regenerator, condenser etc., when the fluid of one of them is low-pressure steam at least, when perhaps becoming steam or making steam liquefaction by phase transformation, flaggy is folded, between plate, flow through the heat-exchangers of the plate type that two kinds of fluids carry out heat exchange.

Background technology

The heat-exchangers of the plate type of prior art is shown in Figure 10 and Figure 11.Figure 10 is the diagram of expression heat-exchangers of the plate type, and Figure 10 A is a front view, and Figure 10 B is a side view.Figure 11 is the decomposition key diagram of Figure 10.

As shown in Figure 10 and Figure 11, in the heat-exchangers of the plate type of prior art, the two boards 3 that two ends is had peristome 5 is with overlapping in the mode in its inner formation space, with the airtight formation heat exchange unit 2 of its edge part, in the mode that above-mentioned peristome 5 is interconnected that this heat exchange unit 2 is overlapping in conjunction with constituting the heat exchange structure body, they are contained in the inside of housing 20, make fluid flow through heat exchange unit inside and outside, carry out heat exchange mutually.

In this heat-exchangers of the plate type, when needing the heat exchange unit that is made of plate, housing also is necessary, exists the manufacturing process complexity, the problem that man-hours requirement is long and variety of components is various.

Figure 12 represents to utilize the absorber of heat-exchangers of the plate type of prior art and the example of evaporimeter.

In the example of prior art shown in Figure 12, platelet heat exchangers is separately made in evaporimeter 21 and absorber about 22 configurations respectively, and the shape of absorber and evaporimeter is different, the various and worker duration of variety of components.

In addition, in this form,, thereby exist the problem that is difficult to densification because the gap between the plate must be quite big.

Disclosure of an invention

In view of the above problems, the purpose of this invention is to provide a kind of heat-exchangers of the plate type, its number of components is few, make and assembling easily simple, can reduce cost, but densification and have high hot-swap feature simultaneously.

For achieving the above object, first kind of form of the present invention, it is characterized by, it be a kind of will have concavo-convex, be provided with the plate of peristome at the two ends of length direction, with two is one group, make its coincident and as heat exchange unit, peristome is merged each other, overlapping a plurality of this heat exchange units, with the path of the space between two flat boards of formation aforementioned hot crosspoint as first fluid, with the space between this heat exchange unit and the unit as having the path of second fluid of heat exchange relationship with aforementioned first fluid, two plates become the heat-exchangers of the plate type of the heat-transfer area of two kinds of fluids, wherein, and when aforementioned heat exchange unit and cells overlap, its edge part is in contact with one another, and forms the second airtight fluid passage.

In aforementioned heat-exchangers of the plate type, can be on the surface of plate, with the gateway that second fluid is set as the open-ended different position of two of the gateway of first fluid, can be made into a kind of heat-exchangers of the plate type, it is that this heat-exchangers of the plate type is arranged side by side and constituted along two groups in the overlapping direction of heat exchange unit, and the mode of carrying out condensation or absorption in another group so that the one group produces steam is communicated with second fluid passage.

According to the present invention, by constitute the inside and outside concavo-convex stream that forms complications of heat exchange unit by one or both parts, when can forming outside stream, utilize a spot of parts and simple manufacturing process just can make the heat-exchangers of the plate type that carries out the complexity of heat exchange by two groups of fluids of different temperatures without housing.

The heat exchanger of second kind of form of the present invention, it is characterized by, it has following structure, promptly, the inboard that is provided in the aforementioned hot crosspoint is provided with being sealed the space and having a plurality of heat exchange units as two peristomes of the gateway of each system respectively of two systems, meanwhile, fluid is flow through in the outside in the inner space of aforementioned two systems and this space respectively separately.

In aforementioned heat-exchangers of the plate type, be communicated with between heat exchange unit and the unit, edge part in this unit is in contact with one another and the mode that is sealed constitutes a plurality of heat exchange units that are equipped with, at this moment, also can dispose about dual system, be divided into the connected component between the aforementioned unit a plurality of along the vertical direction inner space.

In addition, in the present invention, being characterized as of heat-exchangers of the plate type, the inboard that is provided in the aforementioned hot crosspoint is provided with being sealed the space and having two a plurality of heat exchange units as the peristome of each system gateway respectively of four systems, meanwhile, and in aforementioned four systems, with first system and second system is one group, third and fourth system is one group, divide two groups to be configured in respectively about, and flow through fluid respectively separately at the inner space of aforementioned four systems and the outside in this space.

In this heat-exchangers of the plate type, the a plurality of heat exchange units that are equipped with, can with about be communicated with between heat exchange unit and the unit in first system of configuration and second system and the 3rd system and Quaternary system two groups the outside of uniting, the edge part in this unit contacts airtight mode each other and constitutes.

By this structure, can carry out two kinds or four kinds of heat exchanges with single heat-exchangers of the plate type, for example, flow through in the mode of the outside of first system fluid with liquid film, make liquid film produce steam by heating by internal flow, utilizing second system to be,, aforementioned steam can be condensed upon on the outer surface of second system by the cooling of internal flow as condenser.In addition, when utilizing second system, make absorbent solution flow through outer surface as liquid film as absorber, can be with aforementioned vapor absorption.

The simple declaration of accompanying drawing

Fig. 1 is an example of heat-exchangers of the plate type in expression first kind of form of the present invention, and Figure 1A is a front view, and Figure 1B is along being the profile of the A-A line of Figure 1A, Fig. 1 C be along the B-B line of Figure 1A to view.

Fig. 2 represents the another one example of the heat-exchangers of the plate type in first kind of form of the present invention, and Fig. 2 A is a side cutaway view, and Fig. 2 B is the profile along the A-A line of Fig. 2 A, and Fig. 2 C is the profile along the B-B line of Fig. 2 A, and Fig. 2 D is the profile along the C-C line of Fig. 2 A.

Fig. 3 is the diagram of an example of heat-exchangers of the plate type in expression second kind of form of the present invention, and Fig. 3 A is a front view, and Fig. 3 B is a plane, and Fig. 3 C is a side view.

Fig. 4 is the diagram of another example of heat-exchangers of the plate type in expression second kind of form of the present invention, and Fig. 4 A is a front view, and Fig. 4 B is a plane, and Fig. 4 C is a side view.

Fig. 5 is that expression is contained in the interior simple structure chart of housing to the heat-exchangers of the plate type in second kind of form of the present invention.

Fig. 6 is the diagram of the another one example of the heat-exchangers of the plate type of expression in second kind of form of the present invention, and Fig. 6 A is a front view, and Fig. 6 B is the profile along the A-A line, Fig. 6 C be along the B-B line to view.

Fig. 7 is the diagram of the another one example of the heat-exchangers of the plate type of expression in second kind of form of the present invention, and Fig. 7 A is a front view, and Fig. 7 B is the profile along the A-A line, Fig. 7 C be along the B-B line to view.

Fig. 8 is the diagram of the heat-exchangers of the plate type another one example of expression in second kind of form of the present invention, and Fig. 8 A is a front view, and Fig. 8 B is the profile along the A-A line, Fig. 8 C be along the B-B line to view.

Fig. 9 is the diagram of the another one example of heat-exchangers of the plate type in expression second kind of form of the present invention, and Fig. 9 A is a front view, and Fig. 9 B is a plane, and Fig. 9 C is a side view.

Figure 10 is the diagram of the heat-exchangers of the plate type of expression prior art, and Figure 10 A is a front view, and Figure 10 B is a side view.

Figure 11 is the decomposition key diagram of the heat-exchangers of the plate type of prior art.

Figure 12 is the structure chart that the heat-exchangers of the plate type of prior art is used for absorber and absorber.

Implement most preferred embodiment of the present invention

Describe the heat-exchangers of the plate type of first kind of form of the present invention below in detail.

The plate that is adopted among the present invention, can utilize the plate of the suitable shape made from following mode, that is, the two boards that will have jog is overlapping in the mode that forms the inner space, when having only its edge part overlapping, contact gently along whole edge (line contact), when when overlapping direction applies power, the shape of its contact site changes and becomes face contact, when aforementioned concavo-convex contact, contact-making surface becomes big when applying power, by soldering (solder brazing) edge is sealed.

That is, preferably, aforementioned panels is adjacent to for making between the plate when soldering, though the afterburning one side of one side is carried out soldering, when applying this power, makes edge part parallel, and then the concavo-convex of plate is in contact with one another.

Place (coating) cored solder at the position of upcoming contact simultaneously overlapping with two boards recited above when one side, is formed in the heat exchange unit that has fluid passage between the above-mentioned space by the peristome of two ends that are formed at above-mentioned plate.

In the present invention, except that soldering (solder brazing), also be included between the plate sealing gasket applies power or seals with welding etc. from the outside the situation that adds.

The concavo-convex wavy structure of extending to predetermined direction that forms of plate of the present invention can form two-dimentional crooked complicated stream with simpler structure.

Make heat-exchangers of the plate type with aforementioned heat exchange unit, by sealing between openings at two ends portion and heat exchange unit and the heat exchange unit and overlapping the heat exchange unit edge closure that forms second fluid passage, on the mutual faying surface of the peristome of heat exchange unit and cell edges closure, place cored solder, the heat exchange unit of the described number of heating soldering under the state that applies power to overlapping direction, heat exchange unit each other in the edge part sealing, just be can be made into the heat-exchangers of the plate type with housing effect at one stroke.

By locating to be provided with rising front one of in this plate openings at two ends portion, when overlapping, can be simple and easyly the cooperation of peristome be positioned.Thereby only overlapping heat exchange unit can carry out the mutual bidimensional location of heat exchange unit very naturally, thus simplified manufacturing technique.

Describe heat-exchangers of the plate type in first kind of form of the present invention in detail below with reference to Fig. 1 and Fig. 2.

Fig. 1 is the diagram of an example of expression heat-exchangers of the plate type, and Figure 1A is a front view, and Figure 1B is the A-A line profile of Figure 1A, and Fig. 1 C is the B-B alignment view of Figure 1A.

In Fig. 1, heat-exchangers of the plate type 1, in conjunction with constituting, wherein heat exchange unit 2 by four heat exchange units 2, by two boards 3 is overlapping, welding or soldering between the contact site of concaveconvex structure and the edge part 4 fixed and made.Then, four above-mentioned heat exchange units 2 are overlapped with the contact site 8 of marginal swell portion 7 the edge rising front portion 6 of openings at two ends portion 5, this part with welding or the fixing assembling of soldering, is constituted heat-exchangers of the plate type.Thereby form the inside of connection heat exchange unit 2 and the stream in heat exchange unit 2 space each other.

Simultaneously, in the inner space 11 of heat exchange unit 2, flow through first fluid by peristome 5, in heat exchange unit 2 space 12 each other, for example as the steam of second fluid, discharge from fluid path 10 as liquid after the cohesion by steam passage 9 importings.In addition, also can flow through the stream of second fluid in addition in the arranged outside of heat exchange unit 2, absorb steam, discharge from fluid path 10 by steam passage 9.

Thereby, by outward flange protrusion is set at heat exchange unit 2, make the contact of this protrusion and closed, just can form outside passages at one stroke without housing as second fluid flowing path.

Fig. 2 is the diagram of the another one example of expression heat-exchangers of the plate type, and Fig. 2 A is a side cutaway view, and Fig. 2 B is the A-A line profile of Fig. 2 A, and Fig. 2 C is the B-B line profile of Fig. 2 A, and Fig. 2 D is the profile of the C-C line of Fig. 2 A.

In heat-exchangers of the plate type shown in Figure 2, with two heat exchanger 1a shown in Figure 1, arranged side by side overlapping of 1b and form a heat exchanger with steam passage 9 and two heat exchanger 1a of second fluid, is communicated with between the 1b.

Heat exchanger shown in Figure 2 is applicable to the absorber 1b and the evaporimeter 1a of absorption refrigerating machine, and vapor flow path 9 is communicated with at absorber 1b and evaporimeter 1a, disconnects mutually between cooling water 13a and the cooling water 14a, and liquid outlet also disconnects each other, passes in and out from the end face side.

In this heat-exchangers of the plate type, in evaporimeter 1a, cooling water enters the inner space 11 of heat exchange unit from peristome 13a, flows out from 13b by the back that is cooled, these 11 inside, space.On the other hand, to dirty, from cold water capture heat become refrigerant steam, by outer space 12 by steam passage 9 arrive absorber 1bs in the outer space 12 of heat exchange unit by refrigerant for not shown cooling medium liquid.

In absorber 1b, cooling water enters inner space 11 from peristome 14a, and by 11 inside, space, cool stream is crossed the absorbent solution of outer space 12 and discharged from 14b.Though do not illustrate among the figure, the absorbent solution that flows down to D from outer space 12 absorbs by the next refrigerant steam of steam passage 9 streams, discharges from the discharge stream 18 that is located at steam passage 9 bottoms.

In addition, unevaporated refrigerant is discharged from path 17 and reclaims, and recycles as refrigerant.

In addition, in Fig. 2, the label identical with Fig. 1 represented same member or unit.Label 15 is a baffle plate, and label 16 is a cutout board.

Heat-exchangers of the plate type shown in Figure 2 is applicable to the regenerator and the condenser of absorption refrigerating machine too.

As mentioned above, according to first kind of form of the present invention, inside and outside concavo-convex by the heat exchange unit that constitutes by one or both parts, form tortuous stream, just can form outside stream at one stroke without housing, meanwhile, by utilizing a few components and simple manufacturing process, make the heat-exchangers of the plate type that carries out the complexity of heat exchange by two groups of fluids of different temperatures, can provide a kind of heat exchanger with low cost with high-efficiency thermal switching performance.

Heat-exchangers of the plate type to second kind of form of the present invention is elaborated below.

Used in the present invention plate, can adopt the plate that forms in the following manner with suitable shape, promptly, the two boards that will have jog is with when the mode in formation space, inside is overlapping, form the confined space that is divided into two or four in the inboard of two boards, in these spaces, two peristomes are respectively arranged, only with its edge part, when cutting part and peristome overlap, contact gently along whole edge (line contact), when when overlapping direction is exerted pressure, the shape of this contact site changes, and becomes the face contact, be in contact with one another up to aforementioned jog, when applying power, it is big that contact-making surface becomes, and utilizes soldering (solder brazing) with edge part and cutting part sealing.

That is, when soldering, be adjacent to mutually for making between each plate, one side applies power one and carries out soldering in the face of aforementioned panels, but when applying power, preferably makes edge part parallel with cutting part, and then makes the concavo-convex contact of plate again.

Place (coating) cored solder in predetermined position simultaneously with above-mentioned two boards when overlapping when one side, be formed in the inner space of the independently dual system that two peristomes are respectively arranged respectively of above-mentioned plate or four systems and have fluid flowing path, form heat exchange unit with this.

In the present invention, except that soldering (solder brazing), be also included within and enter between the plate that sealing gasket applies the situation of power from the outside or with welding situation about sealing.

The concavo-convex of plate of the present invention can form the wavy structure of extending to prescribed direction, and available simpler structure forms the complicated stream of bidimensional bending.

By a peristome rising front is set at this plate, can be simple and easyly when overlapping cooperation by peristome position.Thereby, except that plate overlapping, can carry out the bidimensional location between each plate naturally, simplified manufacturing technique.

The aforementioned hot crosspoint, by per two peristome that will be located at dual system or four internal system spaces between a plurality of heat exchange units, be communicated with form fluid flowing path in, make fluid flow through the outside of heat exchange unit of the inner space of this system respectively, can be made into two groups or four groups of heat-exchangerss of the plate type that fluid carries out heat exchange simultaneously.

For example, in aforementioned heat-exchangers of the plate type, the internal flow that makes first system is a cooling water, external fluid is an absorbent solution, the internal flow of second system is a cold water, external fluid is a cooling medium liquid, can be used as board-like absorber and evaporimeter that absorption refrigerating machine is used, in addition, the internal flow of first system as heat source fluid (warm water, steam etc.), external fluid is as absorbent solution, and the internal flow of second system is as cooling water, external fluid is as the refrigerant condensate liquid, can be used as board-like regenerator and condenser that absorption refrigerating machine is used, and then, if these board-like absorbers and evaporimeter and regenerator and the condenser heat-exchangers of the plate type as one four system is used, an available heat-exchangers of the plate type constitutes the absorber of absorption refrigerating machine, evaporimeter, regenerator, condenser.

Describe heat-exchangers of the plate type in second kind of form of the present invention in detail below with reference to Fig. 3 to Fig. 9.

Fig. 3 is the diagram of an example of expression heat-exchangers of the plate type of the present invention, and Fig. 3 A is a front view, and Fig. 3 B is a plane, and Fig. 3 C is a side view.

In Fig. 3, label 3 is a plate, label 2 is a heat exchange unit, here, is made of three heat exchange units, this heat exchange unit 2, by

dual system

23a, 23b forms inner space 23, difference upper and lower settings peristome 24 (24a in each system, 24b), seal by sealing 26 between the inner space of dual system.Simultaneously, the opening rising front portion 25 by peristome 24 between the heat exchange unit 2 connects, and forms outside stream 27 between this unit, and outside stream 27 is provided with in the mode that the outside with this unit is communicated with.

In the heat-exchangers of the plate type of Fig. 3, flow through the fluid of dual system in the inner space of heat exchange unit, simultaneously, also flow through the fluid of dual system in its outside, between this dual system, produce moving of steam, configuration example is like an elephant evaporimeter and absorber or regenerator and two types such heat exchanger of condenser, to reach the purpose of densification.

Fig. 4 is the diagram of another one example of expression heat-exchangers of the plate type of the present invention, and Fig. 4 A is a front view, and Fig. 4 B is a plane, and Fig. 4 C is a side view, on the face of the plate of the heat exchange unit that constitutes so concavo-convex shape 31,32 can be set.Being located at the concaveconvex shape on airtight 26 32 between dual system plays a part steam in the external path 27 in the outside is carried out the cowling panel of fast moving and separates the separator of vapour-liquid.

Fig. 5 is the structure diagram that expression is contained in heat-exchangers of the plate type of the present invention an example in the housing.Like this, will be contained in the housing 20, at the inner space 23a corresponding to heat exchange unit 2, the outside of 23b is provided with fluid dispersion pipe 29 respectively.

Fig. 6 is for replacing the housing sealing 28 that the edge of heat exchange unit 2 is airtight of Fig. 5, and Fig. 6 A is a front view, and Fig. 6 B is the profile along the A-A line, Fig. 6 C be along the B-B line to view.In Fig. 6, for example, have on top and to import the inlet 33 that solution, refrigerant are used, in each machine, supply solution by this inlet 33 respectively by managing 29 (with reference to Fig. 5), refrigerant has solution respectively in the bottom, the

outlet

34,35 of refrigerant.When using, do not supply refrigerant as condenser.

Fig. 7 be the expression another heat-exchangers of the plate type of the present invention diagram, Fig. 7 A is a front view, Fig. 7 B is the profile along the A-A line, Fig. 7 C be along the C-C line to view.

Fig. 8 be the expression another heat-exchangers of the plate type of the present invention diagram, Fig. 8 A is a front view, Fig. 8 B is the profile along the A-A line, Fig. 8 C be along the B-B line to view.

In the heat-exchangers of the plate type shown in Fig. 3 to Fig. 6, be communicated with about the outside of the dual system of the interior side liquid of left and right sides machine, become a system, in contrast, in Fig. 7 and heat-exchangers of the plate type shown in Figure 8, the interior side liquid of left and right sides machine is a dual system, but the outside is being cut apart up and down, is communicated with about divided part.Thereby,, have pressure distribution at above-below direction by cutting apart of outside steam side.For example, when evaporimeter that is applied to absorption refrigerating machine and absorber, can constitute the evaporimeter and the absorber of multistage.Fig. 7 and example shown in Figure 8 are five sections heat exchangers.

In example shown in Figure 7, carry out division up and down with the shaped portion 36 of plate.In addition, in example shown in Figure 8, carry out division up and down by inserting plate 37.In the figure, the plate 37 of insertion also plays a part separator except that the effect as division board, and then, also play a part liquid that the outside to plate flows down and carry out liquid and distribute.

In addition, multistageization also is effective for regenerator and condenser.

Fig. 9 is the further diagram of other example of expression baffle heater of the present invention, it is the shape that further develops of Fig. 6, four systems of internal flow are respectively established a dual system in about the branch of the inboard of plate, the outside in plate, steam passage is communicated with left and right sides dual system, and wherein, Fig. 9 A is a front view, Fig. 9 B is a plane, and Fig. 9 C is a side view.

In heat-exchangers of the plate type shown in Figure 9, the regenerator and condenser and evaporimeter and the absorber that for example can be used for absorption refrigerating machine, regenerator 23b and condenser 23a be configured in top about, evaporimeter 23c and absorber 23d be configured in the bottom about, but evaporimeter, absorber, condenser and regenerator are in sustained height four machines and also have no relations side by side.

Like this, by constituting heat-exchangers of the plate type with four systems, the main machine that constitutes absorption refrigerating machine can all be made by a plate.

As explained above according to second kind of form of the present invention, when the inside of the heat exchange unit that is made of a kind of plate forms dual system or four system's streams, can make the heat-exchangers of the plate type that carries out the complexity of heat exchange by temperature different two groups or four groups of fluids by few part count and simple manufacturing process, the heat exchanger with efficient heat exchange performance can be provided with low cost.

Utilizability on the industry

The present invention is a kind ofly alternatively flow through two kinds of fluids to carry out heat between the plate with flaggy is folded The heat-exchangers of the plate type of exchange can be used for adopting the evaporimeter of the refrigerator of low pressure refrigerant, Low-temperature regenerator, condenser etc.

Claims

1, a kind of heat-exchangers of the plate type, it is characterized by, having concavo-convex two ends the plate of peristome is set at length direction, two is one group, make its imbricate as heat exchange unit, peristome is overlapped each other is piled up a plurality of described heat exchange units, the path of the space between the two boards that forms the aforementioned hot crosspoint as first fluid, with the space between this heat exchange unit and the heat exchange unit as carrying out the path of second fluid of heat exchange with aforementioned first fluid, described plate is as the heat-transfer area of two kinds of fluids, wherein, between aforementioned hot crosspoint and unit when overlapping, be in contact with one another at its edge part, form the path of second fluid of sealing.

2, heat-exchangers of the plate type as claimed in claim 1 is characterized by, on the plate face with the different position of first fluid gateway openings at two ends portion, the gateway of aforementioned second fluid is set.

3, a kind of heat-exchangers of the plate type, it is characterized by, it is with the described heat-exchangers of the plate type of claim 2, constitutes overlapping two groups of arranged side by side arrangements of direction of heat exchange unit, so that the one group produces steam, the mode of carrying out condensation or absorption in another group is communicated with second fluid passage.

4, heat-exchangers of the plate type as claimed in claim 1, it is characterized in that, the inboard that is provided in the aforementioned hot crosspoint is provided with being sealed the space and having a plurality of heat exchange units as two peristomes of the gateway of each system respectively of two systems, meanwhile, fluid is flow through in the outside in the inner space of aforementioned two systems and this space respectively separately.

5, heat-exchangers of the plate type as claimed in claim 4 is characterized in that, is communicated with between a plurality of above-mentioned heat exchange units and the unit, and the aforementioned a plurality of heat exchange units that dispose are in contact with one another and sealed in this cell edges portion.

6, heat-exchangers of the plate type as claimed in claim 5 is characterized in that, about the configuration aforementioned arrangements in the dual system of a plurality of heat exchange unit inner spaces, the connected component between aforementioned unit is divided into a plurality of along the vertical direction.

7, heat-exchangers of the plate type as claimed in claim 1, it is characterized in that, the inboard that is provided in the aforementioned hot crosspoint is provided with being sealed the space and having two a plurality of heat exchange units as the peristome of each system gateway respectively of four systems, meanwhile, in aforementioned four systems, with first system and second system is one group, third and fourth system is one group, about dividing two groups to be configured in respectively, and flow through fluid respectively separately at the inner space of aforementioned four systems and the outside in this space.

8, heat-exchangers of the plate type as claimed in claim 7, it is characterized by, a plurality of heat exchange units of aforementioned arrangements, first system and second system are one group, the 3rd system and Quaternary system system are one group, be communicated with between the heat exchange unit in two groups the outsides separately and unit, the edge part of the above-mentioned a plurality of heat exchange units that are configured is in contact with one another and is sealed and constitute.