JP4633709B2 - Plate heat exchanger - Google Patents

Description

  The present invention relates to a plate heat exchanger employed in various devices such as a water heater and a water heater.

  2. Description of the Related Art Conventionally, as one of heat exchangers that exchange heat between a heat exchange medium and a heat exchange medium, plate-type heat exchangers that are employed in various devices such as a water heater and a water heater are known.

  Such a plate heat exchanger includes a plurality of heat transfer plates having heat transfer portions in which a plurality of ridges and recesses are alternately formed on both front and back surfaces, and the plurality of heat transfer plates face each other. The first space through which the heat exchange medium such as hot water and steam circulates and the second space through which the heat exchange medium such as water and hot water circulates alternately with each heat transfer section as a boundary. ing.

  In such a plate heat exchanger, a plurality of heat transfer plates are laminated so that the protrusions of the adjacent heat transfer portions cross each other (the protrusions are partially in contact with each other). Accordingly, the first space and the second space are formed between the heat transfer plates while keeping the interval between the heat transfer plates at a predetermined interval.

  And the plate-type heat exchanger having the above-described structure forms a plurality of ridges and ridges on both the front and back surfaces of the heat transfer section, thereby widening the heat transfer area, the heat exchange medium, and the heat exchange medium. The heat exchange medium and the heat exchange medium are circulated while disturbing the flow.

As a result, the plate heat exchanger having the above configuration can increase the chance of heat transfer between the heat exchange medium and the heat exchange medium. It is employed in various devices such as a water heater and a water heater (see, for example, Patent Document 1).
JP 2005-326074 A

  By the way, as described above, the plate type heat exchanger distributes pure hot water, steam or the like as a heat exchange medium in the first space, and distributes a heat exchange medium such as water or hot water in the second space. For example, when it is employed in a heat exchanger for reheating hot water in a bathtub, the hot water in the bathtub containing impurities such as scale and hair in the second space is used as the heat exchange medium. Since it circulates, there is a problem that impurities are deposited at the site where the ridges meet each other, and the circulation of the heat exchange medium is hindered.

  That is, in the plate heat exchanger, since the second space is formed between the heat transfer portions in which the protrusions cross each other, the hair or the like on the upstream side of the portion where the protrusions abut each other The area where the heat exchange medium stagnates is formed on the downstream side of the part where the fibers are caught or the protrusions meet, and impurities such as scale accumulate over time, and the accumulated impurities Had the problem of clogging the second space.

  In order to remove impurities accumulated in the second space in this way, it is conceivable to wash the second space by flowing cleaning water, but the portion where the protrusions collide with each other and the accumulated impurities are washed water. As a result, the impurities cannot be removed and the second space is obstructed.

Accordingly, in view of such circumstances, the present invention ensures the flowability of the heat exchange medium without causing the impurities to accumulate even when the heat exchange medium containing impurities is circulated, and performs efficient heat exchange. it can of performing, without forming a region to be accumulated impurities contained in a heat exchange medium, challenge to provide a plate heat exchanger capable of a plurality of heat transfer plates in proper placement And

The plate heat exchanger according to the present invention includes a plurality of heat transfer plates having heat transfer portions in which a plurality of ridges and recesses are alternately formed on both front and back surfaces, and the plurality of heat transfer plates are heat transfer portions. In the plate type heat exchanger in which the first space for circulating the heat exchange medium and the second space for circulating the heat exchange medium are alternately formed with each other facing and stacked, with each heat transfer section as a boundary, The first space is formed between the heat transfer portions where the protrusions cross each other, while the second space is a heat transfer portion in which the regions where the protrusions and the recesses are formed are not in contact with each other. Each heat transfer plate is formed between a fitting portion extending from the entire circumference of the outer periphery of the heat transfer portion to one surface side of the heat transfer portion, and outward from the tip of the fitting portion. Rutotomoni a extending therefrom has a flange portion, a plurality of supporting portions formed a flange portion partially is uplift intervals in the circumferential direction of the flange portion The plurality of support portions of one of the adjacent heat transfer plates are formed at positions corresponding to the support portions of the other heat transfer plate, and the flange portion of the other heat transfer plate Is configured to maintain the protrusions and recesses of the heat transfer portion forming the second space in a non-contact manner, and the fitting portions of the adjacent heat transfer plates are in a fitted state. It is characterized in that the heat transfer part is sealed by brazing.

  According to the plate heat exchanger, since the first space is formed between the heat transfer portions in which the protrusions cross each other, the uneven shape of the protrusions and the recesses in the first space. The heat exchange medium can be circulated while giving an appropriate disturbance to the flow of the heat exchange medium due to the presence of the portions where the protrusions and the ridges meet, and the heat of the heat exchange medium is transferred to a heat transfer plate (heat transfer part) Will be transmitted efficiently. On the other hand, in the second space, the regions where the ridges and the ridges are formed are formed between the non-contact heat transfer portions, so that the portions where the heat transfer portions partially contact, that is, impurities accumulate. Even a heat exchange medium that does not have a causative site and contains impurities can be smoothly distributed without depositing the impurities.

And since the ridges and ridges are formed also in the heat transfer section forming the second space, the heat transfer area can be widened, and the heat exchange medium has the ridge and ridge irregular shapes. The heat exchange medium can be circulated while giving an appropriate turbulence to the flow, and heat exchange with the heat exchange medium flowing in the first space can be efficiently performed via the heat transfer section. In addition, each heat transfer plate extends from the entire circumference of the outer periphery of the heat transfer portion to one surface side of the heat transfer portion, and extends outward from the tip of the fit portion. Rutotomoni a flange portion, a plurality of supporting portions formed a flange portion partially is raised are provided at intervals in the circumferential direction of the flange portion, one of the heat transfer of the adjacent heat transfer plates The plurality of support portions of the plate are formed at positions corresponding to the support portions of the other heat transfer plate to support the flange portion of the other heat transfer plate and form the second space. And the regions where the concave stripes are formed are maintained in a non-contact manner, and the fitting portions of the adjacent heat transfer plates are brazed in a fitted state and the heat transfer portions are sealed. The heat transfer part (heat transfer process) that forms the second space without forming a site that causes impurities to accumulate in the second space. Over door) can be properly placed. In particular, in manufacturing the plate heat exchanger, each heat transfer plate can be appropriately positioned by simply stacking the heat transfer plates, which is very effective from the viewpoint of manufacturing efficiency.

As described above, according to the plate heat exchanger according to the present invention, the flow path is not clogged even when the heat exchange medium containing impurities is circulated, and the heat exchange medium and the heat exchange medium are not clogged. Excellent effect of being able to perform highly efficient heat exchange and arranging a plurality of heat transfer plates appropriately without forming a region where impurities contained in the heat exchange medium are accumulated Can be played.

  Hereinafter, a plate heat exchanger according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  The plate heat exchanger according to the present embodiment is employed as a heat exchanger for various devices such as a water heater and a water heater, and as shown in FIGS. 1, 2 (a) and 2 (b), a plurality of heat exchangers are used. Is provided with heat transfer plates 10a, 10b..., And the heat transfer plates H are stacked on the heat transfer plates 10a, 10b (a heat transfer unit 100 described later) as a boundary. The first space A that circulates and the second space B that circulates the heat exchange medium C are alternately formed. Further, the openings 12, 12, 13, and 13 provided in the heat transfer plates 10a and 10b are connected, and the heat exchange medium inflow path A1 and the heat exchange medium outflow path A2 through which the heat exchange medium H flows into and out of the first space A. Are formed, and a heat exchange medium inflow passage B1 and a heat exchange medium outflow passage B2 through which the heat exchange medium C flows into and out of the second space B are formed.

  In the plate heat exchanger according to this embodiment, two types of heat transfer plates 10a and 10b are alternately stacked.

  The two types of heat transfer plates 10a and 10b have the same basic configuration except that the unevenness of the peripheral portion of the openings 12 and 13 is different from that of the flange 102 (supporting portion 103) described later. Has been. Specifically, each of the heat transfer plates 10a and 10b is formed by press-molding a flat plate made of a stainless alloy or a titanium alloy, and the heat transfer section 100 that partitions the first space A and the second space B; A fitting portion 101 extending from the entire circumference of the outer periphery of the heat transfer portion 100 to the one surface side of the heat transfer portion 100, and a flange portion 102 extending outward from the tip of the fitting portion 101. I have.

  As shown in FIGS. 3A and 3B, the heat transfer section 100 is formed in a substantially rectangular shape in plan view, and the heat exchange medium inflow path A1, the heat exchange medium outflow path A2, and the heat exchange medium inflow path. Openings 12, 12, 13, and 13 for forming B1 and the heat exchange medium outflow path B2 are formed at the four corners.

  In the heat transfer section 100, a plurality of ridges 20 and 21 are formed alternately on the front and back surfaces. The ridges 20 and the ridges 21 are formed to extend in an inclined state with respect to the center line (reference line) in the longitudinal direction of the heat transfer section 100. In the present embodiment, the ridges 20 ... and the ridges 21 ... are located on one end side in the short direction of the heat transfer section 100 and on the other end side in the short direction of the heat transfer section 100 with the center line as a boundary. It is formed so as to form a mirror image with the region, and has a so-called herringbone shape (fish bone shape) in a plan view and a wave shape in a cross section. Since the heat transfer section 100 is formed by press molding as described above, the back surface (the other surface) of the ridges 20 on one surface becomes the ridges 21. The reverse side of the strip 21 is a convex strip 20.

  1 and 2, the fitting portion 101 is formed so that it can be fitted to the fitting portions 101 of the adjacent heat transfer plates 10a, 10b ... in a state where the heat transfer plates 10a, 10b ... are stacked. Then, the fitting portions 101, 101 are brazed to each other so that the space between the heat transfer portions 100, 100 (first space A and second space B) can be sealed.

  The said flange part 102 is provided in the perimeter of the outer periphery of heat-transfer plate 10a, 10b, and it extends in the same direction as the surface direction of the heat-transfer part 100, and is the other heat-transfer plate 10a, 10b ... laminated | stacked. It is formed so as to face the flange portion 102. And the support part 103 ... which supports the flange part 102 of laminated | stacked adjacent heat-transfer plate 10a, 10b ... is formed in this flange part 102. As shown in FIG. The support portions 103 are formed by partially protruding the flange portion 102.

  More specifically, the flange portion 102 according to the present embodiment is intermittently cut along the boundary (ridge line) between the fitting portion 101 and the flange portion 102, and the cut range as shown in FIG. Are raised in a substantially trapezoidal shape on the other surface side of the heat transfer plates 10a, 10b... (Heat transfer part 100), so that a plurality of support parts 103 are formed. The plurality of support portions 103 are spaced apart from each other in a non-contact state between the heat transfer portion 100 of one heat transfer plate 10a ... defining the second space B and the heat transfer portion 100 of the other heat transfer plate 10b ... As shown (see FIG. 7), the outer periphery of one heat transfer plate 10a ... is formed to support the outer periphery of the other heat transfer plate 10b ....

  Therefore, the support portions 103 of the one heat transfer plate 10a ... and the support portions 103 of the other heat transfer plate 10b ... have one pitch (support portion 103 ...) in the direction in which the ridge line extends. 1) and the support portion 103 of one heat transfer plate 10b ... supports the flange portion 102 (the portion not raised) of the other heat transfer plate 10b .... .

  Since the plate-type heat exchanger 1 according to the present embodiment is provided with the support portion 103 raised in a trapezoidal shape on any of the heat transfer plates 10a, 10b, a plurality of heat transfer plates 10a, 10b,. Thus, in the side view, the plurality of support portions 103 and the flange portion 102 have a honeycomb shape so as to increase the strength of the entire plate heat exchanger. The support portions 103 may be provided over the entire circumference of the heat transfer plates 10a, 10b, but in this embodiment, the flange portions 102 on both end sides in the short direction of the heat transfer plates 10a, 10b. Are provided with a plurality of support portions 103 at a part of the flange portion 102 at both ends in the longitudinal direction of the heat transfer plates 10a, 10b.

  Moreover, since the main purpose of providing the support portion 103 is to bring the heat transfer portions 100 forming the second space B into a non-contact state, one of the heat transfer plates 10a and 10b facing each other. The support part 103 may be provided in 10a, and only the collar part 102 supported by this support part 103 may be provided in the other heat transfer plate 10b. However, in order to increase the overall rigidity of the plate heat exchanger 1, it is preferable to provide the support portions 103 on the heat transfer plates 10a and 10b as in the present embodiment.

  As shown in FIGS. 2A and 2B, the plate heat exchanger 1 according to the present embodiment includes the heat transfer unit 100 among the openings 12, 12, 13, and 13 at the four corners of the heat transfer unit 100. An opening 12 on one end side in the short direction is connected to one end side in the longitudinal direction to form a heat exchange medium inflow passage A1, and an opening on the other end side in the short direction on the other end side in the longitudinal direction of the heat transfer section 100. 12 are connected to form a heat exchange medium outflow path A2. Of the four corner openings 12, 12, 13, 13 of the heat transfer section 100, the opening 13 on one end side in the short direction is connected to the other end side in the longitudinal direction of the heat transfer section 100 to form a heat exchange medium. An inflow path B1 is formed, and an opening 13 on the other end side in the short direction is connected to one end side in the longitudinal direction of the heat transfer section 100 to form a heat exchange medium outflow path B2. As a result, the plate heat exchanger 1 forms a diagonally inclined flow in the first space A and the second space B as shown in FIGS. 5 (a) and 5 (b).

  The basic configuration of each of the heat transfer plates 10a and 10b is as described above. Of the two types of heat transfer plates 10a and 10b, one heat transfer plate 10a has a longitudinal direction as shown in FIG. The peripheral portion of the opening 12 on one end side in the short side direction on one end side and the peripheral portion of the opening 12 on the other end side in the short side direction on the other end side in the longitudinal direction are the other side of the heat transfer unit 100 (in the drawing) It is formed by bulging (protruding) toward the front side, and has a peripheral portion of the opening 13 on the other end side in the short direction on one end side in the longitudinal direction, and one end side in the short direction on the other end side in the longitudinal direction The peripheral portion of the opening 13 is formed so as to be recessed on the other surface side of the heat transfer portion 100 (bulge (protrude) on one surface side). In FIG. 3, the wavy hatched area is convex on the front side of the paper, and the diagonally hatched area is concave on the back side of the paper.

  As shown in FIG. 3B, the other heat transfer plate 10b includes a peripheral portion of the opening 12 on one end side in the short direction on one end side in the longitudinal direction and the other end in the short direction on the other end side in the longitudinal direction. The peripheral portion of the opening 12 on the side is formed so as to be recessed on the other surface side of the heat transfer portion 100 (bulge (protrude) on one surface side), and the other end in the short direction on one end side in the longitudinal direction. The peripheral portion of the opening 13 on the side and the peripheral portion of the opening 13 on the one end side in the short side direction on the other end side in the longitudinal direction are bulged (protruded) to the other surface (front side in the drawing) side of the heat transfer unit 100. ).

  Thereby, in the state which laminated | stacked two types of heat-transfer plates 10a and 10b, the protruding peripheral part of the opening 12, 12, 13, 13 of the opposing heat-transfer parts 100 and 100 closely_contact | adheres, and each heat-transfer plate The opening 12 on one end side in the short direction is connected to one end side in the longitudinal direction of the heat transfer section 100 of 10a and 10b to form a heat exchange medium inflow passage A1 that communicates only with the first space A, and the other end in the longitudinal direction. On the other hand, the opening 12 on the other end side in the short direction is continuous to form the heat exchange medium inflow passage A1 that communicates only with the first space A, while the short direction on the other end side in the longitudinal direction of the heat transfer unit 100 The one end side opening 13 is connected to form a heat exchange medium inflow passage B1 communicating only with the second space B, and the one end side in the longitudinal direction of the heat transfer section 100 is connected to the opening 13 on the other end side in the short direction. Thus, the heat exchange medium outflow path B2 communicated only with the second space B. It has manner (see FIG. 2 (a) and (b)).

  As described above, the plate-type heat exchange according to this embodiment is based on the assumption that the two basic types of heat transfer plates 10a and 10b having the same basic configuration and different irregularities in the peripheral portions of the openings 12 and 13 are employed. As shown in FIG. 6, the apparatus 1 has two types of heat transfer by reversing the same kind of heat transfer plates 10 a and 10 b from the upper layer side to the lower layer side by 180 ° on the surface of the heat transfer unit 100 in the stacking order. Plates 10a and 10b are alternately stacked.

  Accordingly, the protrusions 20 on the one surface side of the one heat transfer plate 10a and the other surface side (opposing heat transfer portion 100) of the other heat transfer plate 10b cross each other, and FIG. As shown in FIG. 7B, a first space A having a region where the heat transfer units 100 are partially in contact and a region where the heat transfer units 100 are not in contact with each other is formed as shown in FIG. Then, as shown in FIG. 4, the support portion 103 of one heat transfer plate 10a supports the flange portion 102 of the other heat transfer plate 10a. As a result, in the plate heat exchanger 1, FIG. And as shown in (b), the other surface of the other heat transfer plate 10b (the region where the protrusions 20 ... and the recesses 21 ... of the heat transfer section 100 are formed) and one surface of one heat transfer plate 10a (the heat transfer plate). The areas where the ridges 20 ... and the ridges 21 ... of the heat section 100 are formed in a non-contact manner across the entire area, and a second space B is formed between the areas (heat transfer sections 100, 100). Is done.

  In this embodiment, since the shape, arrangement | positioning, and size of the protruding item | line 20 ... of the two types of heat-transfer plates 10a and 10b, and the concave item 21 ... are set equally, the heat transfer which forms the 2nd space B is carried out. The portions 100, 100 are formed such that the ridges 20 ... and the ridges 21 are substantially parallel to each other, and the ridges 20 of the other heat transfer plate 10b are opposed to the ridges 21 of the one heat transfer plate 10a. Yes. Further, by setting the height of the support portion 103 (height raised from the flange portion 102), the heat transfer portions 100 and 100 forming the second space B are maintained in a non-contact state (predetermined interval). The convex strip 20 of the other heat transfer plate 10b enters the concave strip 21 of the heat transfer plate 10a.

  In addition, as shown in FIG. 1, the plate-type heat exchanger 1 according to the present embodiment has a cylindrical nozzle 30a that is pipe-connected to only one heat transfer plate 10a that is positioned on the outermost side in a stacked state. 30b, 30c, 30d is connected to the periphery of the openings 12, 12, 13, 13 at the four corners, and only the other heat transfer plate 10b located on the outermost side has the openings 12, 12, 13, 13 What is not formed is adopted.

  And the plate type heat exchanger 1 which concerns on this embodiment forms the 1st space A between one heat-transfer plate 10a in the outermost side, and the other heat-transfer plate 10b ... adjacent to this, As described above, the plurality of heat transfer plates 10a, 10b,... Are sequentially formed so as to form the first space A between the other heat transfer plate 10b on the outside and the heat transfer plates 10a adjacent thereto. Are stacked.

  And this plate-type heat exchanger 1 is the part (the protrusions 20 ... of the heat-transfer part 100 which forms the 1st space A, and the fitting part 101) where the heat-transfer plates 10a, 10b ... in a laminated state contact. , 101 and the peripheral portions of the openings 12, 12, 13, 13) are integrally formed by welding (brazing). In the brazing, when a plurality of heat transfer plates 10a, 10b,... Are laminated, a copper plate (copper foil) or the like is interposed between the heat transfer plates 10a, 10b, and the whole is heated. It is done by melting.

  The plate-type heat exchanger 1 according to the present embodiment has the above-described configuration. Next, for the operation of the plate-type heat exchanger 1 having the above-described configuration, the plate-type heat exchanger 1 is replaced with a water heater (refresher). The case where it is adopted as an example will be described.

  In the plate heat exchanger 1, the nozzle 30a of the heat exchange medium inflow path A1 is liquid-tightly connected to a pipe for supplying a heat exchange medium H such as hot water, while the nozzle 30b of the heat exchange medium outflow path A2 is heated. It is connected to piping connected to a heating source for reheating the exchange medium H. Thus, the plate heat exchanger 1 constitutes a part of the heating circulation path of the heat exchange medium H.

  On the other hand, the nozzle 30c of the heat exchange medium inflow passage B1 is connected to the forward piping connected to the bathtub via the pump, and the nozzle 30d of the heat exchange medium outflow passage B2 is connected to the return piping connected to the bathtub. Is done. Thereby, this plate type heat exchanger 1 comprises a part of circulation path which circulates the water (hot water) in a bathtub.

  Then, when the heat exchange medium H and the heat exchange medium C are circulated through each circulation path, the heat exchange medium H flowing through the first space A and the heat exchange medium C flowing through the second space B are transmitted. Heat exchange is performed via the heat plates 10a, 10b (heat transfer unit 100). At this time, the heat exchanging medium H is bent so as to deface the abutted portions of the ridges 20 while causing a moderate turbulence in the flow due to the existence of the opposed ridges 20. The heat in the heat exchange medium H is efficiently transferred to the heat transfer unit 100 through the first space A.

  On the other hand, in the second space B, unlike the first space A, since the opposing heat transfer units 100 are in a non-contact state, the heat exchange medium C passes between the heat transfer units 100 (convex). The heat transfer plates 10a, 10b,... (The heat transfer section 100) circulate from the heat exchange medium inflow path B1 toward the heat exchange medium outflow path B2. By receiving the heat of the heat exchange medium H transmitted through the heat exchange medium, the heat exchange between the heat exchange medium H and the heat exchange medium C is performed. And even if the hot water in the bathtub containing impurities such as scales is circulated, the contact portion of the ridges 20... Is deposited in the second space B through which the heat exchange medium C is circulated so as to deposit impurities. Since it does not exist, the heat exchange medium C can be circulated smoothly over a long period without depositing impurities in the second space B.

  As described above, in the plate heat exchanger 1 according to the present embodiment, the first space A is formed between the heat transfer units 100 and 100 in which the protrusions 20 are brought into contact with each other. In the space A, the heat exchange medium H can be circulated while giving an appropriate disturbance to the flow of the heat exchange medium H due to the presence of the protruding ridges 20 in a contact state, and the heat of the heat exchange medium H is transferred to the heat transfer plate. Heat is efficiently transferred to 10a, 10b (heat transfer unit 100). On the other hand, since the second space B is formed between the heat transfer parts 100 in a non-contact state, there is no portion where the ridges 20 contact each other, that is, there is no portion that causes impurities to accumulate. The heat exchange medium C containing impurities can be smoothly circulated in the second space B.

  And in the heat-transfer part 100 which forms the 2nd space B, since the protruding item | line 20 ... and the recessed item | line 21 ... are formed, in addition to being able to enlarge a heat-transfer area, the protruding item | line 20 ... The heat exchange medium C can be circulated while giving an appropriate disturbance to the flow of the heat exchange medium C with the uneven shape of 21..., And the heat exchange with the heat exchange medium H circulated in the first space A is transmitted. This can be done efficiently via the heat section 100.

  Further, each of the heat transfer plates 10a, 10b,... Has a flange portion 102 on the outer periphery of the heat transfer portion 100, and the second space B is formed in one flange portion 102 of the heat transfer plate 10a, which forms the second space B. Is provided with a support portion 103 that supports the flange portion 102 of the other heat transfer plate 10b to form the second space B and maintains the heat transfer portions 100 facing each other to form the second space B at a predetermined interval. Without forming a site that causes impurities to accumulate in the two spaces B, the interval between the opposed heat transfer units 100 can be set to a preferable interval for heat exchange. In particular, in producing the plate heat exchanger 1, the heat transfer plates 10a, 10b,... Can be arranged at appropriate positions, which is very effective from the viewpoint of manufacturing efficiency.

  The ridges 20 ... and the ridges 21 ... are composed of a plurality of ridges 20 ... and ridges 21 ... which extend in an inclined state with respect to a reference line and are alternately formed in a direction orthogonal to the extending direction. Therefore, one of the heat transfer plates 10a and 10b forming the first space A is inverted by 180 ° with respect to the other and laminated, so that the ridges 20 can be brought into point contact with each other. .

  The plate heat exchanger of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention.

  In the said embodiment, although the plate type heat exchanger 1 was demonstrated as a heat exchanger for chasing the hot water of a bathtub, it is not limited to this, The said plate type heat exchanger 1 is non-heat exchange. If the piping system (circulation system) through which the medium C circulates is an open type in which some impurities enter from the outside, it functions effectively. Of course, it is needless to say that the piping system (circulation system) through which the non-heat exchange medium C is circulated can be a closed piping system in which no impurities enter from the outside.

  In the said embodiment, the shape, arrangement | positioning, and size of the convex strip 20 ... of each heat-transfer plate 10a, 10b, the concave strip 21 ... are set equally, and it protrudes to the concave strip 21 ... which opposes maintaining a non-contact state. Although the second space B is formed between the heat transfer parts 100 in the form in which the strips 20 enter, the present invention is not limited to this, and the protrusions of the heat transfer parts 100 and 100 forming the second space B are not limited thereto. Assuming that the regions where the strips 20 and the concave strips 21 are formed are not in contact with each other, for example, the projections 20 of the heat transfer section 100 forming the second space B are opposed to each other. The protrusions 20 of the heat transfer section 100 are formed so as to form the protrusions 20 ... and the recesses 21 of the heat transfer section 100, or the protrusions 20 of the heat transfer section 100 that form the second space B intersect each other. The strips 20 ... and the concave strips 21 ... may be formed. Even if it does in this way, since each mutual protruding item | line 20 ... will become non-contact, there can exist an effect | action and effect similar to the said embodiment.

  In the embodiment described above, the support portion 103 is formed in a trapezoidal shape so that the opposing heat transfer portions 100 are maintained in a non-contact state and the second space B is formed between the heat transfer portions 100, but the present invention is not limited thereto. For example, the support portion 103 may be formed so as to partially bulge the flange portion 102. However, in order to increase the overall strength of the plate heat exchanger 1, a plurality of trapezoidal support portions 103 are formed on each of the heat transfer plates 10a and 10b, as in the above embodiment, so that the plate heat exchange is performed. The periphery of the vessel 1 is preferably a honeycomb structure.

The perspective view of the plate type heat exchanger concerning one embodiment of the present invention is shown. It is sectional drawing of the plate type heat exchanger concerning the embodiment, Comprising: (a) shows the II cross section of FIG. 1, (b) shows the cross section of II-II of FIG. It is explanatory drawing of the heat exchanger plate employ | adopted as the plate type heat exchanger concerning the embodiment, Comprising: (a) shows one heat exchanger plate and (b) shows the other heat exchanger plate. The partial side view of the plate type heat exchanger concerning the embodiment is shown. It is explanatory drawing for demonstrating the flow of the heat exchange medium and to-be-heat exchange medium of the plate type heat exchanger concerning the embodiment, (a) shows the flow in 1st space, (b) The flow of the second space is shown. Explanatory drawing for demonstrating the lamination | stacking aspect of the heat-transfer plate of the plate type heat exchanger concerning the embodiment is shown. It is explanatory drawing for demonstrating the 1st space and 2nd space of the plate type heat exchanger concerning the embodiment, Comprising: (a) has contacted the protrusions of the heat-transfer part which forms 1st space. Explanatory drawing of an area | region and 2nd space is shown, (b) shows explanatory drawing of the area | region and 2nd space where the convex stripes of the heat-transfer part which form 1st space are non-contacting.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Plate type heat exchanger, 10a, 10b ... Heat transfer plate, 12, 12, 13, 13 ... Opening, 20 ... Convex strip, 21 ... Concave strip, 30a, 30b, 30c, 30d ... Nozzle, 100 ... Heat transfer , 101 ... fitting part, 102 ... collar part, 103 ... support part, A ... first space, A1 ... heat exchange medium inflow path, A2 ... heat exchange medium outflow path, B ... second space, B1 ... heated Exchange medium inflow path, B2 ... Heat exchange medium outflow path, C ... Heat exchange medium, H ... Heat exchange medium

Claims (1)

Each of the heat transfer plates includes a plurality of heat transfer plates having heat transfer portions in which a plurality of ridges and recesses are alternately formed on the front and back surfaces, and the heat transfer plates are laminated with the heat transfer portions facing each other. In the plate heat exchanger in which the first space through which the heat exchange medium flows and the second space through which the heat exchange medium flows are alternately formed at the boundary, the first space includes the ridges of each other While the second space is formed between the heat transfer portions where the protrusions and the recesses are formed in a non-contact manner, each heat transfer plate is formed between the heat transfer portions crossing each other. Rutotomoni includes a fitting portion extending from the entire periphery of the outer periphery of the heat transfer unit on one side of the heat transfer portion, and a flange portion extending outward from the tip of the fitting portion, A plurality of support portions formed by partially raising the flange portion are provided at intervals in the circumferential direction of the flange portion, and the adjacent heat transfer plates The plurality of support portions of the one heat transfer plate are formed at positions corresponding to the support portions of the other heat transfer plate, support the flange portion of the other heat transfer plate, and form a second space. It is configured to maintain the ridges and ridges of the hot part in a non-contact manner, and the fitting parts of the adjacent heat transfer plates are brazed together to seal between the heat transfer parts. Plate type heat exchanger characterized by being stopped.

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