KR100370007B1 - plate heat exchanger - Google Patents

Abstract

The present invention relates to a plate heat exchanger, and a plurality of plates and offset pins are stacked inside the tunnel forming the appearance of the plate heat exchanger, and the protrusions formed on the side plate constituting the tunnel and the notching portion formed on each plate. The inflow and outflow pipes of the thermal fluid are inserted into the space created by the notching so that the alignment of each plate and the offset pin can be easily performed, and each plate is plated with nickel or the like to a vacuum furnace. The position alignment is fixed and maintained in the transfer process and heat treatment process.

To this end, the present invention provides a plate heat exchanger comprising a top plate and a bottom plate and two side plates fastened to form an exterior of the plate heat exchanger, and a plurality of plates and offset pins inserted into the tunnel.

In addition, upper and lower portions of the two side plates are formed with semi-circular protrusions, respectively, and each plate edge is formed with a notching portion having the same radius as the semi-circular protrusions, and each of the two side plates and each plate is fastened. The heat fluid inlet and outlet pipes having a plurality of slots are inserted into the space created by the protrusions and notches.

Description

Plate heat exchanger

The present invention relates to a heat exchanger, and more particularly to a plate heat exchanger configured by stacking a plurality of plates (plates).

In general, a heat exchanger is a device for exchanging heat by directly or indirectly contacting two fluids having different temperatures. Among them, a plate heat exchanger is formed by stacking plates formed with a plurality of semicircular ports to allow fluid to pass therethrough. Lose.

The configuration of the plate heat exchanger will be described in detail with reference to the drawings.

As shown in FIGS. 1 to 3, the plate heat exchanger includes a semicircular protrusion 16 formed at each corner thereof, and a semicircular port 17 formed at each corner of the first outer plate 10. On the rear surface, the first plate 11 having the same shape and size as the first outer plate 10 is stacked.

The first plate 11 has a first border 18 having the same shape and size as the first outer plate 10 and an offset pin having the same thickness as the first border 18 therein. fin 30 is mounted.

The first edge 18 is formed at the corners with the same protrusions 16 as the first plate 10, but the ports 17 are formed only at the right and bottom protrusions 16, respectively. The edges of the offset pins 30 are mounted to coincide with the inner edges of the first edge 18 formed by the protrusions 16 of the first edge 18.

The same plate as the first outer plate 10 is mounted on the rear surface of the first plate 11 as the second plate 12, and the same plate as the first plate 11 is mounted on the rear surface of the third plate 13. ) Is mounted.

However, the ports 17 of the third plate 13 are not formed on the upper and lower protrusions 16 on the right side, but are formed on the upper and lower protrusions 16 on the left side (as illustrated).

That is, the first plate 11 and the third plate 13 are left-right symmetrical.

The same plate as the first outer plate 10 is mounted to the fourth plate 14 on the rear surface of the third plate 13, and the same as the first plate 10 on the rear surface of the third plate 13, but each protrusion 16 is provided. The plate on which the pot 17 is not formed is mounted as the second outer plate 15.

On the other hand, the first and third plates (11, 13) are each formed with a space in which fluid can flow by the offset pin 30, each plate 11 (except the second outer plate 15) ( 12) The ports 17 formed in each plate by the stacking of the 13 and 14 form a flow path of the thermal fluid.

That is, the ports 17 formed on the upper left side and the lower left side of the first outer plate 10 serve as inlets and outlets of the first thermal fluid, respectively, and the ports 17 formed on the upper right and lower sides of the first outer plate 10 are formed of the second thermal fluid. It becomes an inlet and an outlet.

The first heat fluid inflow and outflow ports are formed by the first plate 11 between the first outer plate 10 and the second plate 12 by the left upper and lower protrusions 16 of the first plate 11. The third plate between the second plate 12 and the fourth plate 14 by the port 17 formed in the upper and lower protrusions 16 on the right side of the third plate 13 but in communication with the space formed in the third plate 13 It does not communicate with the space formed in 13).

On the contrary, the second heat fluid inflow and outflow ports are formed on the first outer plate 10 and the second plate by the ports 17 formed on the right upper and lower protrusions 16 of the first plate 11, respectively. Although not in communication with the space formed in the first plate 11 between the 12, between the second plate 12 and the fourth plate 14 by the upper and lower protrusions 16 on the left side of the third plate 13. It communicates with the space shape | mold on the 3rd plate 13. As shown in FIG.

Accordingly, the first heat fluid and the second heat fluid flow through respective communicating spaces while being separated from each other, and perform heat exchange with each other between the third plates 13.

On the other hand, although the plate heat exchanger consisting of six plates has been described, it is possible to increase the number of plates in the same configuration as described above according to the heat exchange area.

However, the conventional plate heat exchanger has the following problems.

The plate heat exchanger is manufactured by plating each plate constituting the plate with a material such as nickel, then positioning the plate heat exchanger so as to match its appearance and heat-treating in a vacuum furnace.

At this time, the plated each plate is laminated by holding the position, it is fixed by a fixing means such as a jig (zig) in order to prevent the deformation of the position during the transfer to the vacuum furnace and heat treatment process.

Therefore, since it takes a long time to accurately position each plate, the production time of the heat exchanger has been shown to increase.

In addition, since the fixing means such as the number of jigs and the like to be produced is required, the production cost of the heat exchanger has been shown to increase.

The present invention has been made in order to solve the above problems, after each plate constituting the plate heat exchanger is laminated in place, it is not fixed by a separate fixing means during the transfer to the vacuum furnace and heat treatment process Its purpose is to maintain its position in the state.

1 is a perspective view of a typical plate heat exchanger.

Figure 2 is an exploded perspective view of Figure 1;

3 is an exploded perspective view showing the first plate of FIG.

4 is a perspective view of a plate heat exchanger according to the present invention.

5 is an exploded perspective view of FIG. 4;

6A is a cross-sectional view taken along the line II of FIG. 4.

6B is a cross-sectional view taken along the line II-II of FIG. 4.

Explanation of symbols for main parts of the drawings

30: offset pin 41: top plate

42: lower plate 43: first side plate

44: second side plate 51, 52, 53, 54, 55: plate

56 notching part 60: first heat fluid inlet pipe

61: first heat fluid outflow pipe 62: second heat fluid inflow pipe

63: second heat fluid outlet pipe 64: slot

In order to achieve the above object, the present invention provides a plate heat exchanger consisting of a tunnel consisting of an upper plate and a lower plate and two side plates, and a plurality of plates and offset pins inserted into the plate heat exchanger.

Hereinafter, as a preferred embodiment of the present invention, a plate heat exchanger in which five plates are stacked will be described in detail with reference to the accompanying drawings.

As shown in Figures 4 to 6, the plate heat exchanger according to the present invention consists of the upper and lower plates 41, 42 and the first and second side plates 43, 44, the tunnel forming the appearance of the plate heat exchanger First, second, third, fourth and fifth plates 51, 52, 53, 54, 55 and the respective plates 51, 52, 53, 54, 55 Offset pins 30 are respectively inserted and stacked between the two ends, and the inflow pipes 60 and 62 and the outflow pipes 61 and 63 of the first and second heat fluids are inserted in the corner portions thereof.

The thicknesses t of the upper and lower plates 41 and 42 and the first and second side plates 43 and 44 are equal to each other, and the upper and lower sides of the first and second side plates 43 and 44 are respectively equal. In the lower part, semi-circular protrusions 45 having a predetermined radius R are formed, respectively.

At the corners of the first, second, third, fourth, and fifth plates 51, 52, 53, 54, and 55, the same radius R as that of each of the protrusions of the first and second side plates 43 and 44 is formed. Each semicircular notching 56 is formed.

Meanwhile, the widths of the 1, 2, 3, 4, and 5 plates 51, 52, 53, 54, 55, the offset pins 30, and the upper and lower plates 41, 42 respectively. (W) are all the same.

In addition, the height H of the offset pins 30 stacked between the plates 51, 52, 53, 54, and 55 is notched in the upper and lower portions of the plate height. Same as the height H except 56, and the width W1 of each of the first and second side plates 43 and 44 and the length L of each of the upper and lower plates 41 and 42 are all laminated. It is equal to the sum of the thicknesses of the (51) (52) (53) (54) (55) and the offset pin thickness.

Then, when the respective plates 51, 52, 53, 54, 55 and the first and second side plates 43, 44 are fastened, respectively, the respective plates 51, 52, 53 are A space in the form of a circular tunnel is formed by the notches 56 and the protrusions 45 formed on the upper and lower portions of the first and second side plates 43 and 44, respectively. The first thermal fluid inflow pipe 60 and the outflow pipe 61, each of which has one end blocked to the upper and lower spaces of the left side (drawings), are inserted, respectively, and the first end of the one end of the upper and lower spaces of the upper right and lower sides thereof is blocked. The thermal fluid inlet pipe 63 and the outlet pipe 64 are respectively inserted.

The outer diameter D of each of the first and second thermal fluid inflow pipes 60 and 62 and the outflow pipes 61 and 62 is twice the radius R of the protruding portion 45 or the notching portion 56. In each of the tubes 60, 61, 62, 63, slots 64 having a width W1 smaller than the thickness T2 of the offset pin 30 are formed at regular intervals and are formed in two, respectively. do. In this embodiment, since the offset pin 30 is four, the two slots 64 are formed. The slot 64 corresponds to half of the number of the offset pins 30 embedded in the heat exchanger. It is formed for each tube 60, 61, 62, 63. Since there are two types of fluid flowing through the offset pin 30, the offset pin through which the first heat fluid flows and the offset pin through which the second heat fluid flows are alternately formed, and thus the slot 64 through which only one heat fluid passes. One half of the number of offset pins 30 is formed.

In each of the inlet pipe 60, 62 and the outlet pipe 61, 63 is inserted, the slot 64 formed in the first thermal fluid inlet tube 60 and the second thermal fluid inlet tube 62 These are inserted to face each other, the slot 64 formed in the first heat fluid outlet pipe 61 and the second heat fluid outlet pipe 63 are also inserted to face each other.

In addition, the slot 64 formed in the first heat fluid inlet pipe 60 and the outlet pipe 61 and the slot 64 formed in the second heat fluid inlet pipe 62 and the outlet pipe 63 are single plates. (51) formed at staggered positions P1 by the sum of the thickness T1 and the single offset pin 30 thickness T2, and the pitch P2 of all slots 64 is a single plate 51 thickness T1. And the sum of the single offset pin 30 thickness T2.

Therefore, the slot 64 of the first heat fluid inflow pipe 60 and the outflow pipe 61 is formed in the inner space formed between the first plate 51 and the second plate 52 and the third plate 53 and the third plate 53. The inner spaces formed between the four plates 54 communicate with each other.

In addition, the slot 64 of the second heat fluid inflow pipe 62 and the outflow pipe 63 may include an inner space formed between the second plate 52 and the third plate 53, and the fourth plate 54 and the fourth plate 54. It communicates with the internal space formed between the five plates 55, respectively.

Referring to the process of the two heat fluid heat exchange by the plate heat exchanger configured as described above are as follows.

When the high temperature fluid flows into the first heat fluid inlet pipe 60, the high temperature fluid is formed between the first plate 51 and the second plate 52 through the slot 64 formed therein. And flow along the flow paths of the offset pins 30 respectively mounted in the inner space formed between the third plate 53 and the fourth plate 54.

On the other hand, when the low temperature fluid flows into the second heat fluid inlet pipe 62, the low temperature fluid is formed between the second plate 52 and the third plate 53 through the slot 64 formed therein. It flows along the flow path of the offset pin 30 mounted in the inner space and the inner space formed between the fourth plate 54 and the fifth plate 55, respectively.

The high-temperature and low-temperature fluids flowing through the second, third, and fourth plates 52, 53, and 54 are heat-exchanged through the second, third, and fourth plates 52, 53, and 54. Thereafter, the high temperature fluid flows into the first heat fluid outlet pipe 61 through the slot 64 formed in the first heat fluid outlet pipe 61 and is discharged, and the low temperature fluid is the second heat fluid outlet pipe 63. Through the slot 64 formed in the) is introduced into the second heat fluid outlet pipe 63 and discharged.

At this time, the high temperature fluid is lower than the temperature when it is introduced into the first heat fluid inlet pipe (60), and the low temperature fluid is higher than the temperature when it is introduced into the second heat fluid inlet pipe (62).

On the other hand, the present invention is not limited to the above-described embodiment, and those skilled in the art will understand that the present invention can be variously implemented without departing from the scope and spirit of the present invention.

For example, more plates and offset pins may be stacked according to the heat exchange area, and each of the inlet pipes and the outlet pipes may be inserted at different positions, or may be inserted in different directions.

As described above, when the tunnel consisting of the upper plate and the lower plate and the two side plates forms an outer appearance of the plate heat exchanger, a plurality of plates and offset fins inserted therein are stacked, and an inlet / outlet pipe of the thermal fluid is inserted. There is no need for a separate fixing means such as a jig.

Therefore, when the upper plate and the lower plate and the two side plates are fastened to form an external appearance of the plate heat exchanger, each plate and the offset fin are stacked in place and the positions thereof are fixed and held, so that each plate is made of nickel or the like. After being plated, it is not deformed at the position during transfer to the vacuum furnace and heat treatment.

As described above, the present invention forms the appearance of the plate heat exchanger, and then a plurality of plates and offset pins are stacked therein, and the heat fluid is formed in the space formed by the protrusions and knocking portions formed on the respective plates. Inlet and outlet pipes may be inserted.

Thus, by simply stacking each plate and offset pin inside the exterior, the exterior plate stacks the respective plates and offset pins in their correct positions.

Therefore, there is an advantage that the production time of the heat exchanger is shortened by reducing the time required for positioning the respective plates and offset fins.

In addition, since the position of each plate and offset pin is fixed and maintained by the appearance, each plate is plated with nickel or the like and then transferred to a vacuum furnace and the jig or the like is not deformed during the heat treatment. Since no means is required, the production cost of the heat exchanger is reduced.

Claims (3)

The upper plate which forms the upper part of the tunnel forming the exterior, A lower plate forming a lower portion of the tunnel, A first side plate and a second side plate which form left and right sides of the tunnel, and protrusions each having a predetermined radius at each of the upper and lower parts thereof are vertically fastened to the upper and lower plates; A plurality of plates each inserted and stacked in the tunnel, each having a notching portion having a radius equal to the radius of the protrusion at each corner; A plurality of offset pins inserted and fastened between the plates, Inserted into spaces formed by respective protrusions formed on the first and second side plates and respective notches formed on the respective plates, 1/2 slots are formed in each of the plurality of offset pins to communicate with the internal spaces generated between the plates, A plate heat exchanger comprising: a first heat fluid inlet / outlet tube and a second heat fluid inlet / outlet tube having one end blocked. The method of claim 1, Slots formed at the first heat fluid inlet and outlet, respectively, and slots respectively formed at the second heat fluid inlet and outlet, The plate heat exchanger, characterized in that the staggered gap formed by the sum of the single plate thickness (T1) and the single offset pin thickness (T2). The method of claim 1, The pitch between the slots formed in the first and second thermal fluid inlet and outlet ports, A plate heat exchanger, characterized in that twice the sum of a single plate thickness (T1) and a single offset fin thickness (T2).