JP2012520439A - Plate heat exchanger - Google Patents

Abstract

The present invention comprises first and second end plates and a core of a heat exchange plate disposed between the first end plate and the second end plate, and the cores of the heat exchange plate are joined together. A plurality of threaded tightening bolts are provided to hold the first end plate and the second end plate at desired intervals, each with the aid of a nut or the like. And at least one guide member for guiding the first end plate and the heat exchange plate relative to the second end plate is provided on the plurality of threaded fastening bolts. At least one of which is removably disposed, the guide member extends through an aperture in the first endplate, and the at least one guide member is at least one of a plurality of threaded clamping bolts. There is a through hole to receive one Ri, has an outer shape corresponding to the notch and the first end plate of the heat exchanger plate, to the plate heat exchanger.
[Selection] Figure 1

Description

  The present invention generally relates to a plate heat exchanger that allows heat to be transferred between two fluids at different temperatures for various purposes. In particular, the present invention relates to a plate heat exchanger including a first end plate, a second end plate, and a heat exchange plate package disposed between a frame plate and a pressure plate. A plurality of threaded tightening bolts extend between the first end plate and the second end plate and hold the plates together with the aid of nuts or the like to hold the heat exchange plate package together. It arrange | positions so that it may hold | maintain at a desired space | interval.

  A plate heat exchanger is usually provided with a frame plate and pressure plate, also called end plates, and a package of a plurality of heat exchange plates arranged adjacent to each other between the frame plate and the pressure plate. . The gasket is disposed between the heat exchange plates. This gasket is accommodated in the gasket groove of the heat exchange plate formed by pressure molding of the heat exchange plate. The plate heat exchanger further includes an injection port and an exhaust port. The inlet and outlet ports are for handling two or more media in the plate heat exchanger and extend through the plate package. A plurality of threaded fastening bolts extend between the frame plate and the pressure plate to hold the heat exchange plate package together and ensure that the plate heat exchanger is leak-free. These plates are arranged to be held at a desired distance from each other with the aid of nuts or the like.

  The heat exchange plate is usually formed by pressure forming of a metal plate, and includes a first inter-plate space connecting the first injection port and the first discharge port, a second injection port, and a second discharge. It is arrange | positioned in a plate package so that the 2nd space between plates which connects a port may be formed. The first and second inter-plate spaces are alternately arranged in the plate package.

  Heat exchange plate designs for plate heat exchangers aim to use the widest possible heat transfer or heat exchange area for heat exchange between two or more media, but the gasket is heat exchange There is also a need to consider how it is applied on the plate, tightly tied and its sealing is realized. The location of the threaded clamping bolt is preferably selected to achieve a plate heat exchanger without being exposed to excessive pressure.

  Patent Document 1 shows a plate heat exchanger having a frame plate, a pressure plate, a heat exchange plate package, two coupling bars, and a special support member. Both the frame plate and the support member are provided with legs. Pressure is created on the pressure plate through the action from other objects such as bars, and the package of the plate is integrated. This structure presents the disadvantage that both the support member and the pressure plate have to be made in the form of a very strong structure. Furthermore, the auxiliary carrying bar for supporting the plate for mounting and disassembling the heat exchanger constitutes unnecessary complexity.

  Patent Document 2 shows another plate heat exchanger in which a fastening bolt is embedded in a carrying bar and a guide bar, and forms a guide member for the pressure plate and the heat exchange plate. Yes. In this regard, the position of the clamping bolt is more suitable to resist the force applied to the plate heat exchanger in operation. The guide member is surrounded by a protective groove extending from the frame plate to the pressure plate, and protects the thread of the guide member from the relationship with the heat exchange plate. The guide member is also disposed so as to be connected to a support member disposed at a predetermined distance from the pressure plate.

  The disadvantage with the above solution is that the pressure and force are too great when this solution is used in a larger plate heat exchanger.

Swedish Patent No. 171499 European Patent No. 1027571

  The object of the present invention is to create a structure that provides an appropriate load distribution on a plate heat exchanger, which structure is cheaper and less complex to manufacture than the one described above.

  The effect is achieved by using at least one guide member for guiding the first end plate and the heat exchange plate relative to the second end plate. Here, the guide member is detachably disposed on at least one of the screwed tightening bolts. The guide member extends through the aperture and the at least one guide member is provided with a through hole for receiving at least one threaded clamping bolt. Here, the outer shape of the guide member corresponds to the notch and the first end plate of the heat exchange plate.

  According to another aspect of the invention, the plate heat exchanger is provided with two guide members. The 1st guide member is provided in the upper part of a plate type heat exchanger, and the 2nd guide member is provided in the lower part of a plate type heat exchanger. The first and second guide members may have the same cross-sectional shape.

  According to still another aspect of the present invention, the second guide member is further provided with a guide rail that movably receives the second guide member.

  According to still another aspect of the present invention, the guide rail that movably receives the second guide member is supported on the ground in whole or in part.

  According to yet another aspect of the invention, the at least one guide member includes two independent parts, respectively. The at least one guide member and the guide rail are made of an extrudable material.

  According to yet another aspect of the invention, the support member is detachably disposed at a predetermined distance from the first end plate at the ends of the upper and lower clamping bolts. , Extending between the upper clamping bolt and the lower clamping bolt.

  According to yet another aspect of the invention, the at least one guide member is movable along the clamping bolt. A portion of the guide member can be removed when the heat exchange plate is pressed together by the first end plate to form an operable plate heat exchanger. Thereafter, a portion of the removed guide member can be placed on the free part of the clamping bolt outside the plate heat exchanger.

  According to still another aspect of the present invention, the object is achieved by the following plate heat exchanger. In this plate heat exchanger, the heat exchange plate is supported on at least one guide member, the first end plate is disposed on the guide rail, and the at least one guide member moves on the guide rail. It is received as possible.

  Further aspects of the invention are defined in the dependent claims.

FIG. 1 is a perspective view of a plate heat exchanger according to an embodiment of the present invention. FIG. 2 shows a side view of a plate heat exchanger according to an embodiment of the present invention. FIG. 3 represents a partial view of a plate heat exchanger according to an embodiment of the present invention. FIG. 4: represents AA sectional drawing of the plate type heat exchanger which concerns on one Embodiment of this invention. FIG. 5 shows a first partial detail view of the B portion of the plate heat exchanger of FIG. 4 according to one embodiment of the present invention. 6 represents a second partial detail view of the C portion of the plate heat exchanger of FIG. 4 according to one embodiment of the present invention. FIG. 7a shows a different view of the guide member according to the invention. FIG. 7b shows a different view of the guide member according to the present invention. FIG. 8a shows a different view of the guide rail according to the invention. FIG. 8b shows a different view of the guide rail according to the invention.

  The present invention will be described in more detail using the description of various embodiments with reference to the accompanying drawings.

  A heat exchanger is used for the transfer of heat between two fluids separated by solids. The heat exchanger can be of various types, but the most common types are spiral heat exchangers, tubular heat exchangers, and plate heat exchangers. Plate heat exchangers are used to transfer heat between hot and cold liquids that flow in alternating channels formed between a set of heat exchange plates. The arrangement of the heat exchange plates described above is sandwiched between a plurality of end plates that are thicker than the heat exchange plates. The inner surface of each end plate faces the heat exchange plate.

  1 and 2 show a schematic view of a plate heat exchanger 1 comprising a number of compression molded heat exchange plates 4. The heat exchange plates 4 are continuously provided in parallel to each other so as to form a plate package. This plate package is provided between a first end plate 2 also called a pressure plate and a second end plate 3 also called a frame plate. A first plate space and a second plate space are formed between each of the plurality of heat exchange plates 4. The end plates 2 and 3 are pressed against the plate package by clamping bolts or coupling bars 5a-c and pressed against each other. The fastening bolts 5 a-c extend through the end plates 2, 3 and are fixed by nuts 6, 20.

  The plate heat exchanger 1 includes a first injection port and a first discharge port for the first medium, and a second injection port and a second discharge port for the second medium. . The injection port and the discharge port extend through the second end plate 3 and the plate package. Of course, the injection port and the discharge port can also be arranged on both sides of the plate heat exchanger 1, that is, on both the first end plate 2 and the second end plate 3. The two media can be flowed in the same direction or in opposite directions.

  In the embodiment shown here, each of the heat exchange plates 4 has a first interplate space leading to the first injection port and the first discharge port, a second injection port and a second discharge in the plate package, respectively. And a second inter-plate space that communicates with the port. The first and second inter-plate spaces are alternately arranged in the plate package. The separation of the interplate space can be made by a gasket that is spread in a gasket groove formed during the pressure forming of the heat exchange plate. The gasket is generally made of rubber or a polymer material. The heat exchange plate 4 is provided with a corrugated shape in order to improve heat exchange between the two fluids.

  In order to guide the heat exchange plate 4, to protect the threaded fastening bolts 5a, 5b from wear of the heat exchange plate 4, to simplify the structure and to manufacture the structure cheaply, the uppermost tightening Guide members 7, 7a, 7b were provided on the bolt 5a and the lowermost fastening bolt 5b.

  Compared to the state-of-the-art plate heat exchanger, the uppermost tightening bolt 5a and the lowermost tightening bolt 5b have the first end plate 2 and the heat exchange plate 4 while the plate heat exchanger stands. It replaces the traditional carrying and guide bars that serve to allow the plate heat exchanger to be opened and closed by allowing them to move along the carrying and guide bars. By providing an upper guide member 7a disposed on the tightening bolt 5a and a lower guide member 7b disposed on the tightening bolt 5b, the guide members 7a and 7b are arranged on the outer side similar to a traditional carrying bar. It has a cross-sectional shape (see FIGS. 7a and 7b). Thereby, the heat exchange plate 4 having the notch shape 11 corresponding to the lower part of the guide members 7a and 7b having the outer shape 10 can be guided along the upper guide member 7a. The fastening bolts 5a and 5b are received in the apertures or through holes 9 of the guide members 7a and 7b. The through hole 9 extends along the entire length in the longitudinal direction of the guide members 7a and 7b. The guide members 7a and 7b are made of an extrudable material in order to reduce the manufacturing cost and lighten the structure. The amount of material that can be extruded can be plastic, aluminum, or other suitable component.

  Further, the fastening bolt 5c exists in a general manner between the second end plate 3 and the first end plate 2, and an edge cut between the second end plate 3 and the first end plate 2 or Located in the recess.

  Since the guide members 7a and 7b are formed by the amount of material that can be extruded, they cannot withstand the same load as the corresponding metal structure. Therefore, the load of the heat exchange plate 4 and the first end plate 2 is transmitted to the ground via the second or lower guide member 7b and the guide rail 12. The upper guide member 7a and the lower guide member 7b are preferably the same in order to reduce manufacturing costs, but may have different shapes. In the embodiment shown here (see FIG. 6), the outer shape 10 at the bottom of the guide member 7b is the inner part of the guide rail 12 so that the guide member 7b is secured to the guide rail 12 and can move along the guide rail 12. Corresponds to shape 16. In some applications, the plate heat exchanger 1 is placed on a frame that fully or partially supports the guide rail 12.

  The upper guide member 7a extends through the uppermost aperture 8 of the first end plate 2 so that the first end plate 2 can move relative to the upper guide member 7a. Similarly, the lower guide member 7 b extends through the lowermost aperture 17 of the first end plate 2. While the load of the first end plate 2 is supported by the guide rail 12 on which the first end plate 2 is supported, the lower guide member 7b and the upper guide member 7a are It only guides the end plate 2. The heat exchange plate 4 is supported by the lower guide member 7b and is guided in the lateral direction by the upper guide member 7a.

  Each guide member 7a, 7b comprises two parts 13a, 13b; 14a, 14b (see FIG. 3). In the process of opening and closing the plate heat exchanger 1, the heat exchange plate 4 can be guided, and as a result, the heat exchange plate 4 and the first end plate 2 are formed so as to form an operable plate heat exchanger 1. When tightened together, the parts 14a and 14b of the outer guide member can be removed, the first end plate 2 is fixed, and the heat exchange plate 4 is connected to the first end plate 2 and the first end plate 2. The nut 6 is fitted to the fastening bolts 5a and 5b so as to be fastened together with the two end plates 3. The length of the parts 13a and 13b of the inner guide member is preferably slightly shorter than the length corresponding to the total thickness of the total heat exchange plate 4 and the first end plate 2 in the plate package. The length of the outer guide member parts 14a and 14b is longer than the remaining length of the fastening bolts 5a and 5b on the free end side when the inner guide member parts 13a and 13b are arranged on the fastening bolts 5a and 5b. Slightly shorter is preferred.

  The upper guide member 7 a may be provided with a wear protection distribution material in order to reduce wear due to the heat exchange plate 4. The wear protection distribution material can be a plate, rubber material, or other suitable material. The wear protection distribution material is preferably fixed to the upper guide member 7a.

  The guide members 7a and 7b have upper portions formed in an outer shape 19 having a width corresponding to the open width between the notches 11 of the heat exchange plate 4 and the apertures 8 and 17 of the first end plate 2. As a result, while the weight of the first end plate 2 is supported by the guide rail 12, the upper guide member 7a and the lower guide member 7b guide the first end plate 2 in the lateral direction. be able to. The upper guide member 7a and the lower guide member 7b guide the heat exchange plate 4 laterally by the outer shape 19 of the guide members 7a and 7b, and the lower guide member 7b Supports weighting. The weight is transmitted directly to the guide rail 12 and further to the ground. The lower outer shape 10 of the upper guide member 7a guides the heat exchange plate 4 and functions as a tilt protection for the heat exchange plate 4 when the plate heat exchanger 1 is open.

  The upper guide member 7 a can also support the load of the heat exchange plate 4 completely or partially by the outer shape 10.

  FIGS. 5 to 6 show enlarged views of portions B and C in FIG. 4 in a state where the guide members 7a and 7b and the guide rail 12 are arranged in the plate heat exchanger 1. FIG. One advantage of the proposed guide shapes 7a, 7b is that the same components can be used as a carrying bar or a guide bar in the upper part of the plate heat exchanger 1, and in the lower part of the plate heat exchanger 1. It can be used as both a carrying bar and a guide bar. The guide rail 12 functions as a load transmission element. The guide rail 12 is closed by tightening the heat exchange plate 4 and the first end plate 2 together so that the nut 6 can be disposed on the lowermost tightening bolt 5b adjacent to the first end plate 2. It also allows the lower guide member 14b to be removed when maintaining the plate heat exchanger 1 in the operating mode.

  As shown in FIGS. 1 and 2, the plate heat exchanger 1 is provided with a support member 15 that allows the plate heat exchanger 1 to be easily opened. The support member 15 is provided at the free ends of the fastening bolts 5 a and 5 b and is fixed by the nut 20. The support member 15 extends between the two fastening bolts 5a and 5b, the distance between the two fastening bolts 5a and 5b does not change, and the force acting on the upper fastening bolt 5a is transmitted to the ground. Ensure that it is. Further details of the function and operation of the support member 15 will be described in connection with the description of the opening and closing process of the plate heat exchanger 1.

  First, the opening process of the plate heat exchanger 1 will be described. 1 and 2, the plate heat exchanger 1 is in an operation mode. The plate heat exchanger 1 can be opened to allow maintenance such as cleaning, repairing, heat exchange plate replacement and the like. The nut 20 is removed, and the support member 15 and the outer guide members 14a and 14b are removed from the fastening bolts 5a and 5b, respectively. The nuts 6 arranged on the fastening bolts 5a and 5b are removed, and the outer guide members 14a and 14b are again arranged on the free parts of the fastening bolts 5a and 5b and pressed against the inner guide members 13a and 13b. It is done. The package of the heat exchange plate 4 and the first end plate 2 are still integrated by another fastening bolt 5c. The support member 15 is again attached to the free part of the upper tightening bolt 5a and the lower tightening bolt 5b. The support member 15 is supported with respect to the ground via the outer guide member 14 b and the guide rail 12. The nut 20 is brought to the tightening bolts 5a and 5b and tightened. The other fastening bolt 5c is removed. When the fastening bolt 5c is removed, the first end plate 2 and the heat exchange plate 4 can be moved along the guide members 7a, 7b accordingly. As a result, an open mode of inspection of the plate heat exchanger 1 is realized. The heat exchange plate 4 located between the first end plate 2 and the second end plate 3 can be separated for cleaning, and one or more heat exchange plates 4 can be removed and other heat A new one can be finally attached without disassembling the exchange plate 4. Closing or closing the plate heat exchanger 1 to the operating mode is similarly performed in the reverse procedure.

  The support member 15 is a bar, an iron plate, or the like, and has a sufficient length to hold the uppermost fastening bolt 5a and the lowermost fastening bolt 5b at an accurate distance from each other, and at the same time, the plate-type heat exchanger 1 In the maintenance open mode, the entire plate heat exchanger 1 can function as a support member 15 integrated with the second end plate 2. Furthermore, it is ensured that the force acting on the upper clamping bolt 5a is transmitted to the ground via the lower clamping bolt 5a.

  The guide members 7a and 7b and the guide rail 12 are preferably made of an extrudable material such as plastic or aluminum, but may be formed by other appropriate manufacturing methods and materials.

  The invention is not limited to the embodiments described and the drawings shown, but can be added and modified in various ways within the scope of the invention as defined by the appended claims.

Claims (11)

A first end plate (2);
A second end plate (3);
A core of a heat exchange plate (4) disposed between the first end plate (2) and the second end plate (3);
Comprising
In order to hold the core of the heat exchange plate (4) together, the first end plate and the second end plate are held at a desired distance with the help of nuts (6, 20), respectively. A plurality of threaded fastening bolts (5a, 5b, 5c) are arranged extending between the first end plate (2) and the second end plate (3);
At least one guide member (7a, 7b) for guiding the first end plate (2) and the heat exchange plate (4) with respect to the second end plate (3) has a plurality of thread cuttings. At least one of the tightened bolts (5a, 5b),
The guide member (7a) extends through the aperture (8) of the first end plate (2),
In the plate heat exchanger (1),
The at least one guide member (7, 7a, 7b) is provided with a through hole (9) for receiving the at least one of the plurality of threaded fastening bolts (5a, 5b). ,
The at least one guide member (7, 7a, 7b) has an outer shape (10) corresponding to the notch (11) of the heat exchange plate (4) and the first end plate (2).
The plate type heat exchanger (1) characterized by the above-mentioned. The guide member (7a, 7b) has a first guide member (7a) and a second guide member (7b) which are two guide members,
The first guide member (7a) is disposed at the top of the plate heat exchanger (1),
The second guide member (7b) is disposed at the bottom of the plate heat exchanger (1).
The plate heat exchanger (1) according to claim 1.   The plate heat exchanger (1) according to claim 1 or 2, wherein the first guide member (7a) and the second guide member (7b) have the same cross-sectional shape.   The plate-type heat exchange according to claim 2 or 3, wherein the second guide member (7b) is further provided with a guide rail (12) that movably receives the second guide member (7b). Vessel (1).   The plate-type heat exchanger (1) according to claim 4, wherein the guide rail (12) movably receiving the second guide member (7b) is supported entirely or partially on the ground.   The plate heat exchanger according to any one of claims 1 to 5, wherein the at least one guide member (7a, 7b) includes two independent parts (13a, 13b, 14a, 14b), respectively. (1).   The plate heat exchanger according to any one of claims 1 to 6, wherein the at least one guide member (7a, 7b) and the guide rail (12) are formed of an extrudable material. (1). The at least one guide member (7, 7a, 7b) is movable along the fastening bolt (5a, 5b);
When the heat exchange plate (4) is clamped together by the first end plate (2) so as to form this operable plate heat exchanger (1), the guide members (7a, 7b) ) Part (14a, 14b) is removable,
The removed part (14a, 14b) of the guide member (7a, 7b) may be disposed in a free part of the fastening bolt (5a, 5b) outside the first end plate (2).
The plate heat exchanger (1) according to any one of claims 1 to 7. A support member (15) is detachably disposed at an end of the fastening bolt (5a, 5b) at a predetermined distance from the first end plate (2),
The support member extends between the plurality of clamping bolts;
The plate-type heat exchanger (1) according to any one of claims 1 to 8. A first end plate (2);
A second end plate (3);
A core of a heat exchange plate (4) disposed between the first end plate (2) and the second end plate (3);
Comprising
In order to hold the core of the heat exchange plate together, a plurality of the end plates are held at a desired interval with the help of nuts (6, 20), respectively. Threaded fastening bolts (5a, 5b, 5c) are arranged extending between the first end plate (2) and the second end plate (3),
At least one guide member (7a, 7b) for guiding the first end plate (2) and the heat exchange plate (4) with respect to the second end plate (3) has a plurality of thread cuttings. At least one of the tightened bolts (5a, 5b),
The guide member (7a) extends through the aperture (8) of the first end plate (2),
In the plate heat exchanger (1),
The heat exchange plate (4) is supported by the at least one guide member (7b),
The first end plate (2) is supported by a guide rail (12),
The at least one guide member (7b) is movably received by the guide rail,
The plate type heat exchanger (1) characterized by the above-mentioned.   The plate heat exchanger (1) according to claim 10, wherein a guide member (7a) arranged on the upper side only guides the heat exchange plate (4) and the first end plate (2).

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