WO2018019174A1 - 多流程可拆卸板式换热器及其专用换热板 - Google Patents
多流程可拆卸板式换热器及其专用换热板 Download PDFInfo
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- WO2018019174A1 WO2018019174A1 PCT/CN2017/093650 CN2017093650W WO2018019174A1 WO 2018019174 A1 WO2018019174 A1 WO 2018019174A1 CN 2017093650 W CN2017093650 W CN 2017093650W WO 2018019174 A1 WO2018019174 A1 WO 2018019174A1
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- plate
- heat exchanger
- flow
- heat exchange
- detachable
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/0056—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another with U-flow or serpentine-flow inside conduits; with centrally arranged openings on the plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
- F28F3/10—Arrangements for sealing the margins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
Definitions
- the present invention relates to a detachable plate heat exchanger, and more particularly to a multi-flow detachable plate heat exchanger and a dedicated heat exchange plate thereof that do not require a joint on the side of the movable pressure plate.
- Plate-and-frame heat exchangers commonly referred to as plate heat exchangers (PHEs)
- PHEs plate heat exchangers
- the plate heat exchanger is an ideal equipment for heat exchange between liquid-liquid and liquid-vapor. It has high heat exchange efficiency, small heat loss, compact and light structure, small floor space, convenient installation and cleaning, wide application, long service life, etc.
- the heat transfer coefficient is 3-5 times higher than that of the tube heat exchanger, and the floor space is one-third of the tube heat exchanger, and the heat recovery rate can be as high as 90% or more.
- the common plate heat exchangers currently on the market are a high-efficiency heat exchanger which is assembled from a series of metal sheets with a certain corrugated shape.
- the types of plate heat exchangers are mainly detachable (frame type) and brazed type.
- the plate form mainly consists of herringbone corrugated plate, horizontal straight corrugated plate and nodular plate.
- the detachable plate heat exchanger is the most commonly used compact heat exchanger for heating, cooling or heat recovery in many industrial fields.
- the popularity of this heat exchanger is attributed to its many unique and advantageous product attributes, including Including high heat transfer efficiency, modular structure, easy assembly and disassembly, easy cleaning and maintenance, and high flexibility for accurate selection according to operating conditions.
- a typical heat exchanger plate set of a detachable plate heat exchanger consists of a series of successively assembled metal sheets.
- a resilient gasket is placed between each of the two metal sheets to form alternating hot and cold fluid flow paths that alternate and are isolated from one another. Gaskets are used to seal the corners and the periphery of the heat exchanger plates to prevent mixing of hot and cold fluids and any fluid leakage to the perimeter.
- the heat exchanger plates are compressed by a frame system to create a pressure and sealing capability.
- the frame system consists of a fixed compression plate at the front; a movable compression plate at the rear; a top lift beam and clamping bolts distributed around the perimeter. During the assembly process, the clamping bolts are adjusted to the appropriate compression to ensure that all flow passages are leak free, but the heat exchanger plates are not crushed. Different forms of interfaces/joints are provided on the fixed compression plate and/or the movable compression plate to allow the hot and cold fluid medium to enter and exit the heat exchanger.
- the detachable plate heat exchanger as a prior art generally comprises: 1) a heat exchanger plate composed of a front end plate 5', a rear end plate 4' and a plurality of heat exchange plates 3' Group; 2) frame system consisting of fixed compression plate 1', movable compression plate 2', upper guide rod 6', lower guide rod 7', rear column 8' and clamping bolt 9'; 3) containing lock An auxiliary member such as a tight washer 10', a fastening nut 11', a support leg 13', a roller assembly 14', and a protective plate 15'; and 4) a fixed compression plate for connecting different types of nozzles To allow the hot and cold fluid medium to enter and exit the four ports 16' of the heat exchanger.
- the front end plate 5', the rear end plate 4' and the heat exchange plate 3' constituting the heat exchanger plate group each include two components: a metal plate and a gasket, wherein
- the metal plate is a thin metal plate with corrugated, sealed grooves and corner holes. It is an important heat transfer element.
- the corrugation not only enhances heat transfer, but also increases the rigidity and rigidity of the plate, thereby improving the pressure bearing capacity of the plate heat exchanger.
- the gasket is installed along the metal plate In the surrounding sealing groove/washer groove, the periphery between the metal sheets is sealed to prevent the fluid from leaking outward, and all or part of the corner holes are sealed as required to allow the cold and hot fluids to flow in the respective flow paths.
- the gasket is designed as a two-way sealing structure with signal holes. When the medium leaks from the first seal, it can be vented from the signal hole, so that the problem can be solved early, and the mixing of the two media is not caused.
- the gaskets are made of different rubber types depending on the medium and operating temperature.
- the heat exchanger plate group greatly affects the overall performance and working condition of the plate heat exchanger, so the performance of the detachable plate heat exchanger can be adjusted and optimized by the following changes of several parameters. Its heat transfer and flow properties: 1) heat exchanger plate slab / plate type; 2) heat exchanger plate size (width and length); 3) angular hole size; 4) plate number; and 5) cold and hot fluid fluid flow The number of processes. It should be particularly noted that the flow pass and the flow channel in the technical field belong to technical terms that are related to each other but have different meanings, and the process refers to a medium in the same heat flow direction in the plate heat exchanger.
- FIG. 1A shows that the detachable plate heat exchanger is a single pass design, and the flow direction of the respective processes of the hot and cold fluid is also indicated by arrows in FIG. 1B, and is cooled in a single process design.
- the sealing gasket of the front end plate 5' seals all four corner holes, and the sealing gasket of the ordinary heat exchange plate 3' only seals part of the corner hole;
- the four corner holes of the end plate 4' do not penetrate the metal The thin plate, while the corner hole of the ordinary heat exchange plate 3' penetrates the thin metal plate, so that the rear end plate 4' and the front end plate 5' can be considered to belong to the special form of the heat exchange plate 3'.
- the rear end plate, the front end plate and the heat exchange plate are not specifically distinguished in this article without any confusion, and are collectively referred to as a heat exchange plate group.
- FIG. 2 shows the schematic construction and operation of a conventional three-flow detachable plate heat exchanger.
- the heat exchanger is composed of a heat exchange plate group 3, a fixed pressure plate 1 and a movable pressure plate 2.
- the cold fluid enters the heat exchanger from the cold fluid inlet nozzle 4 on the side of the fixed pressure plate 1 , flows upward in the first flow, flows downward in the second flow, flows upward again in the third flow, and finally flows from the cold fluid.
- the cold fluid outlet connection 7 on the pressure plate 2 exits the heat exchanger.
- the hot fluid flows in from the hot fluid inlet nozzle 9 on the side of the movable pinch plate 2, and flows out of the heat exchanger from the hot fluid outlet pipe 5 located in the fixed pinch plate 1 in reverse through three processes.
- Existing multi-flow heat exchangers are divided into groups by dividing the heat exchanger plate group between the fixed pressure plate and the movable pressure plate.
- a baffle 6 is installed between each of the two groups to force the fluid to change the direction of flow to achieve an excess between the various processes.
- the baffle 6 is different from the ordinary heat exchanger plate 3 It has two corner holes that are sealed.
- the object of the present invention is to solve many problems existing in the prior art, in particular to overcome the technical limitations of the prior art that a multi-flow design needs to be provided at the opposite ends of the heat exchanger, and provides a completely novel multi-flow.
- the structure and design of the heat exchanger plates are designed to be efficient and easy to maintain, especially for multi-flow detachable plate heat exchangers that do not require a take-over on the movable compression plate.
- the present invention provides a heat exchange plate for a multi-flow detachable plate heat exchanger.
- the heat exchanger plate has a plurality of lateral zones through which a plurality of lateral process zones that are in communication with each other or longitudinal process zones that are isolated from each other can be formed by a specially shaped gasket.
- a heat exchanger plate By using such a heat exchanger plate, it is possible to construct a multi-process detachable plate heat exchanger which does not require a nozzle on the side of the movable pinch plate.
- the present invention also relates to a special gasket shape and structure to achieve a multi-flow detachable plate heat exchanger that does not require a take-over on the movable compression plate.
- a multi-process detachable plate heat exchanger including a fixed pressing plate, a movable pressing plate, and a fixed pressing plate and a movable pressing plate assembled by a clamping bolt.
- a heat exchange plate group wherein the heat exchange plate group comprises a plurality of sealing gaskets configured with special shapes to form two or more laterally partitioned side flow heat exchanger plates that are sequentially connected, and the side flow heat exchanger plates are assembled
- the heat exchanger plates are alternately formed by alternating hot and cold runners, and the number of flows of the multi-flow detachable plate heat exchanger is equal to the number of lateral zones of the side flow heat exchanger plates.
- the connecting pipe is provided only on the fixed pressing plate without providing a connecting pipe on the movable pressing plate.
- the side flow heat exchanger plates have two, three, four or more of the lateral sections.
- a multi-process detachable plate heat exchanger including a fixed pressing plate, a movable pressing plate, and assembled on the fixed pressing plate and the movable pressing plate by a clamping bolt.
- the heat exchange plate group comprises a set of sealing gaskets configured with special shapes to form two laterally partitioned side flow heat exchanger plates that communicate with each other, and a N-1 group configured with a special shape seal a spacer to form two laterally partitioned isolation zone heat exchange plates separated from each other, the side flow heat exchange plates and the isolation zone heat exchange plates being assembled to form the heat exchanger plate group in which the hot and cold flow paths alternate
- the number of flows of the multi-process detachable plate heat exchanger is 2N, wherein N is a natural number greater than or equal to 2.
- the connecting pipe is provided only on the fixed pressing plate without providing a connecting pipe on the movable pressing plate.
- the side flow heat exchanger plate is adapted to two processes for abutting against the movable pressing plate, and the isolating zone heat exchanger plate is used for All other processes except this.
- a side flow heat exchange plate dedicated to the multi-flow detachable plate heat exchanger described above wherein the heat exchange plate is provided with a straight groove at a periphery and a middle portion for a configuration Specially shaped gaskets are formed to form two or more lateral zones that are in communication.
- an isolation zone heat exchanger plate dedicated to the multi-flow detachable plate heat exchanger, wherein the heat exchanger plate is provided with a straight groove at a periphery and a middle portion for a configuration Specially shaped gaskets are formed to form two lateral sections that are isolated from one another.
- the heat exchange plate in the heat exchanger plate dedicated to the multi-flow detachable plate heat exchanger of the above technical solution, can be changed by geometric features to obtain different thermal performance, and the exchange has different geometric characteristics.
- the hot plates can be mixed and arranged in the same heat exchanger plate group.
- the geometric features include a smooth surface, a V-shaped fish wave, a circular or irregular pit, a stud, and Other structures used to enhance heat transfer.
- the sealing and/or separating function of the gasket may be partially or completely replaced by other sealing structures.
- the other sealing structures include brazing, welding, diffusion boundaries, mechanical seals or other sealing means.
- a gasket suitable for the side flow heat exchanger plate is provided, wherein the gasket is disposed at a level disposed at a periphery and a middle portion of the side flow heat exchanger plate.
- Straight grooves are formed such that the side flow heat exchange plates form two or more lateral sections that are in turn connected.
- a gasket for a heat exchange plate of the above-mentioned isolation region wherein the gasket is disposed at a level of a periphery and a middle portion of the heat exchange plate of the isolation region.
- Straight grooves are formed such that the heat exchange plates of the isolation regions form two lateral sections that are isolated from each other.
- the multi-process detachable plate heat exchanger (PHE) designed in accordance with the present invention has the following advantages over conventional single-flow design and/or multi-flow design.
- the multi-flow heat exchanger according to the present invention is as easy to open for cleaning and maintenance as a conventional single-flow heat exchanger;
- the overall heat transfer efficiency of the heat exchanger is improved because there is no local downstream/cocurrent flow between adjacent processes as occurs in conventional multi-flow designs;
- each heat exchanger plate Since the length and width of each heat exchanger plate are relatively small, the overall shape of the heat exchanger tends to be cubic, so the space required for the same total heat conduction area is small;
- FIG. 1A is a schematic exploded view of a prior art single-flow detachable plate heat exchanger.
- FIG. 1B is a schematic structural view of various heat exchange plates composed of a metal plate and a gasket in FIG. 1A.
- Fig. 2 is a schematic view showing the working principle of a conventional three-flow detachable plate heat exchanger which is provided with a nozzle on the side of the movable pressing plate.
- 3A is a schematic view showing the operation principle of a side flow heat exchange plate having two lateral sections, exemplified by a flow path of a hot side fluid, according to an embodiment of the present invention.
- 3B is a schematic view showing the operation principle of a side flow heat exchange plate having two lateral sections, exemplified by a flow path of a cold side fluid, according to an embodiment of the present invention.
- FIG. 4 is a simplified structural exploded view of a two-way detachable plate heat exchanger that does not require a take-over on the side of the movable compression plate in accordance with an embodiment of the present invention.
- 5A is a schematic view showing the operation principle of a side flow heat exchange plate having three lateral sections, exemplified by a flow path of a hot side fluid, according to an embodiment of the present invention.
- 5B is a schematic view showing the operation principle of a side flow heat exchange plate having three lateral sections, exemplified by a flow path of a cold side fluid, according to an embodiment of the present invention.
- Fig. 6A is a schematic view showing the operation principle of a heat exchanger plate having two lateral partitions, exemplified by a flow path of a hot side fluid, according to a modification of the present invention.
- Fig. 6B is a schematic view showing the operation principle of the heat exchanger plate having two lateral partitions, exemplified by the flow path of the cold side fluid, according to a modification of the present invention.
- Figure 7 is a simplified structural exploded view of a six-flow detachable plate heat exchanger that does not require a take-over on the side of the movable compression plate in accordance with a variation of the present invention.
- the invention overcomes the following technical prejudice regarding the multi-flow plate heat exchanger: the multi-flow plate heat exchanger needs to respectively provide the inlet and outlet interfaces of the hot and cold fluid on opposite sides of the fixed pressing plate and the movable pressing plate of the heat exchanger and It takes over.
- This technical bias has appeared in a large number of prior art materials for introducing multi-flow heat exchangers, and the inventors of the present invention have fundamentally subverted this technical bias through inventive technical solutions.
- the heat exchange plate disclosed in the present invention for a multi-flow detachable plate heat exchanger has a plurality of lateral regions, and by combining with a specially shaped gasket, a plurality of lateral flow partitions or a lateral flow partition can be formed or Dedicated heat exchanger plates for the longitudinal channel partitions that are isolated from each other.
- the heat exchanger plates of the prior art do not have a plurality of lateral sections that are connected or isolated from each other, and belong to an integral area for the flow of the hot and cold fluid.
- a key component for solving the technical problems existing in the existing multi-flow plate heat exchanger is a heat exchange plate having a plurality of lateral regions, which further cooperate with a special-shaped sealing gasket. A plurality of horizontal process partitions are realized between each of the two plates.
- This special heat exchange plate can be called a lateral flow plate.
- the side flow heat exchanger plate of the present invention it is possible to construct a multi-flow plate heat exchanger which does not need to be provided with a take-over pipe on the movable pressing plate, and the number of processes corresponds exactly to the lateral partition on each side flow heat exchanger plate. The number of working principles of the side flow heat exchanger plates of the present invention is described below.
- FIG. 3A shows a side flow heat exchange plate having two lateral partitions as an example of a flow path of a hot side fluid
- FIG. 3B shows a side flow having two lateral partitions as an example of a flow path of a cold side fluid.
- Heat exchanger plate Different from the four corner holes of the conventional heat exchange plate shown in FIG. 1B are respectively fixed on the upper and lower ends of the plate, and the positions of the four corner holes of the side flow heat exchange plate 12 of the present invention are different depending on the number of processes. Changed. As shown in FIG. 3A, the hot fluid 15 flows into the right side section of the heat exchanger plate 12 via the hot side inlet corner hole 14 in the upper right corner.
- the elastic sealing gasket 16 is installed in the gasket groove around the metal sheet of the side flow heat exchange plate 12, seals the periphery between the metal sheets to prevent the fluid from leaking outward, and seals the corner holes according to design requirements to make the cold
- the hot fluid flows in the respective flow paths, thereby preventing the hot fluid 15 from coming into contact with the cold side fluid flowing through the adjacent cold side corner holes 13.
- the gasket 16 and a portion of the strip 17 in the gasket direct the flow of hot fluid 15 to the bottom of the sheet.
- An opening 18 between the partial strip 17 of the gasket and the peripheral gasket causes the hot fluid 15 to flow laterally to the left side section of the heat exchanger plate.
- the hot fluid 15 flows further upward therefrom and finally flows out from the hot side exit angle hole 19, and likewise the elastic sealing gasket 16 prevents the hot fluid 15 from flowing to the cold side of the adjacent cold side corner hole.
- the fluid comes into contact.
- the opening 19 which changes the direction of the flow is more moderate in flow steering than the baffle 6 shown in Fig. 2 of the prior art, and the flow velocity is substantially constant and constant at the time of turning, and there is no obvious The compression and expansion of the distribution zone, so that the increase in steering pressure drop is small.
- the flow path of the cold side fluid shown in FIG. 3B is exactly opposite to the flow path of the hot side fluid shown in FIG. 3A.
- the cold fluid 20 flows into the heat exchange plate via the cold side inlet angle hole 21 in the upper left corner.
- the left side of the partition Likewise, the elastomeric gasket 16 serves to prevent cold fluid 20 from coming into contact with hot side fluid flowing through adjacent hot side corner holes.
- the gasket 16 and a portion of the strip 17 in the gasket direct the flow of cold fluid 20 to the bottom of the sheet.
- An opening 18 between the partial strip 17 of the gasket and the peripheral gasket allows cold fluid to flow laterally to the right side section of the sheet.
- the cold fluid 20 flows further upward therefrom and eventually flows out of the cold side exit angle hole 22.
- the flow areas of the hot and cold fluids are the same but the flow directions are completely opposite, a pure countercurrent state is achieved, and the maximum heat transfer potential can be exerted.
- FIG. 4 shows a simplified structural exploded view of a complete dual-flow heat exchanger employing the side-flow heat exchanger plates having two lateral zones as shown in Figure 3.
- the heat exchanger is composed of a fixed pressing plate 1, a movable pressing plate 2, and a heat exchange plate group 3 assembled between the fixed pressing plate 1 and the movable pressing plate 2 by clamping bolts.
- the heat exchanger plate assembly is further assembled from a series of side flow heat exchange plates 12 having two lateral sections.
- the heat exchange plate as the rear end plate and the front end plate can be regarded as a special form of the side flow heat exchange plate 12, and the sealing gasket and the corner hole structure are correspondingly as shown in FIG. 1A. Just configure it.
- each side flow heat exchanger plate 12 itself is used to complete the flow direction adjustment (U-Turn) in the lateral direction, thereby allowing the hot and cold side fluid inlet and outlet nozzles 4, 5, 7, and 9 are all placed on the side of the fixed pressing plate 1, so that it is not necessary to provide any connecting pipe on the side of the movable pressing plate 2, which makes the multi-process detachable plate heat exchanger according to the present invention installed and maintained.
- the convenience is identical to that of a conventional single-pass heat exchanger.
- FIG. 5A shows the structure and working principle of a side flow heat exchange plate having three lateral partitions as an example of a flow path of a hot side fluid
- FIG. 5B shows three flow paths of a cold side fluid as an example.
- the number of flows of the multi-flow heat exchanger using only the side flow heat exchanger plates corresponds exactly to the number of lateral zones on each side flow heat exchanger plate, it can be understood in this sense to be according to the present invention.
- the number of flows of the plate heat exchanger manufactured in the above embodiment is increased in the lateral direction.
- the side flow heat exchanger plates with 2 to 4 lateral process zones are the most practical and economical, in other words, the flow of the plate heat exchanger
- the number is preferably from 2 to 4.
- the inventor of the present invention further proposes another modified embodiment on the basis of realizing a plurality of lateral flow zone partitioning side flow heat exchanger plates. Thereby, the number of flows of the multi-flow plate heat exchanger manufactured according to the present invention can be increased to an unlimited extent in the longitudinal direction.
- this modified embodiment of the present invention will be specifically described.
- FIG. 6A and 6B show the design structure and working principle of the heat exchange plate of this modified embodiment, and Fig. 6A shows a flow path of the hot side fluid as an example of the present invention.
- the divided heat exchange plates, Fig. 6B show a heat exchange plate having two lateral sections, exemplified by a flow path of a cold side fluid, according to a modification of the present invention.
- the modified embodiment uses the same heat exchange plate, but the arrangement of the corner holes and the shape of the gasket are different, in particular, the partial strips 17 of the gasket extend to the length of the entire flow path, so that the lateral direction of the fluid The flow is completely blocked.
- This type of plate is equivalent to a variant heat exchange plate in which two conventional heat exchange plates shown in FIG.
- This variant can be called an isolated partial heat exchanger plate (Isolated Partition Plate) having two The longitudinal process zones that are isolated from each other are significantly different from the above-described lateral flow pass plates having two or more lateral process zones that are in communication with one another.
- the flow path of the hot and cold fluid in each longitudinal flow section of the heat exchanger plate of the isolation region shown in FIGS. 6A and 6B is identical to the two conventional heat exchanger plates 3' shown in FIG. 1B, and therefore is omitted herein. Description.
- FIG. 7 shows the construction and operation of a six-flow detachable plate heat exchanger in accordance with a variation of the present invention.
- the heat exchanger is composed of a fixed pressing plate 1, a movable pressing plate 2, and a heat exchange plate group 3 assembled between the fixed pressing plate 1 and the movable pressing plate 2 by clamping bolts.
- the heat exchanger plate group 3 further comprises a set of side flow heat exchanger plates for two processes (third, fourth flow) directly adjacent to the side of the active pressure plate and for remaining other processes (first, Two sets of isolation zone heat exchange plates of the sixth process and the second and fifth processes), and the hot and cold side fluid inlet and outlet nozzles 4, 5, 7, and 9 are all disposed on the side of the fixed pressure plate 1 so that it is not necessary Any nozzles are placed on the side of the movable pinch plate 2.
- the working principle of the six-flow detachable plate heat exchanger will be described by taking the complete flow path of the hot side fluid as an example.
- the hot fluid enters the heat exchanger from the hot fluid inlet nozzle 9 on the fixed pressure plate 1 , the first process And the second process is completed in different isolation zone heat exchanger plates, wherein the first process flows upward and the second process flows downward; then, the third process and the fourth process are completed in the same side process heat exchanger plate, wherein the third process The upward flow, the fourth flow flows downward; finally, the fifth process and the sixth process are respectively completed in the isolation zone heat exchanger plates corresponding to the first process and the second process, wherein the fifth process flows upward, and the sixth process flows downward. Finally, the hot fluid flows out of the heat exchanger from the hot fluid outlet nozzle 5 located on the fixed pressure plate 1.
- the flow path of the cold side fluid is exactly related to the flow path of the above hot side fluid, and thus the description is omitted here.
- the side flow heat exchanger plates are used in the third and fourth processes next to the side of the active compression plate, and the isolation zone heat exchanger plates are used in other processes.
- the side flow heat exchanger plate is used to complete the flow direction adjustment (U-Turn) in the longitudinal direction to allow the hot and cold side fluid inlet and outlet nozzles 4, 5, 7, and 9 to be all placed on the fixed pressure plate 1 Side, so there is no need to provide any joints on the side of the movable pressing plate 2, so that the detachable plate heat exchanger adopting the multi-flow design of the present variant is similar to the conventional single-flow heat exchanger in terms of installation and maintenance convenience. It's exactly the same.
- the heat exchange plates described in the present invention have the following two typical application examples.
- the heat exchanger plates required for these two applications can be provided by the same pressing die, the only difference being the number of corner holes cut, the shape and configuration of the gasket.
- the second application example not only the lateral flow but also the vertical flow is set, in other words, a heat exchange plate having a lateral process partition and a heat exchange plate having a longitudinal process partition are used in combination.
- the second application example of the present invention is applicable to a case where a higher number of processes is required, including 4, 6, 8, 10, ... 2N (even) processes (if each heat exchanger plate is For benchmarks, the number of processes can be any value greater than or equal to 2, and there is no such limit for even processes. Although only an even number of processes is feasible, there is no structural limit to the maximum number of processes.
- a gasket of a suitable shape is placed on each of the heat exchanger plates to form the isolation zone heat exchanger plates described above.
- This type of heat exchanger plate is used in all other processes except for the two processes that are in close proximity to the active compression plate.
- a spacer of suitable shape is placed on each of the heat exchanger plates to form the side flow heat exchanger plates described above.
- This type of heat exchanger plate is suitable for use in two processes in close proximity to the active compression plate.
- the side flow heat exchange plates for the multi-flow detachable plate heat exchanger are provided with straight grooves (sealing grooves) in the periphery and the middle portion for configuring the special Shaped gaskets to form two or more lateral process zones that are in communication with each other; and isolating zone heat exchanger plates for multi-flow detachable plate heat exchangers with straight grooves in the perimeter and middle
- the gasket of the particular shape is configured to form two longitudinal process zones that are isolated from one another.
- the heat exchanger plate type or corrugation should be determined according to the actual needs of the heat exchange occasion. For the case where the flow pressure is large, the pressure drop is small, and the plate type with small resistance should be selected. . In addition, when determining the plate type, it is not suitable to select the plate with too small a single plate area, so as to avoid the excessive number of plates, the flow velocity between the plates is too small, and the heat transfer coefficient is too low, so this problem should be paid more attention to the larger heat exchanger. Specifically, the heat exchanger plate for the multi-process detachable plate heat exchanger can be changed in geometric characteristics to obtain different thermal performance, and the heat exchange plates having different geometric characteristics can be mixed and arranged on the same heat exchange plate. s.
- the geometric features include smooth surfaces, V-shaped fish waves, round or irregular pits, studs, and other structures for enhancing heat transfer. Further, in the above heat exchanger plates for multi-flow detachable plate heat exchangers, the sealing and/or separating function of the gasket may be partially or completely replaced by other sealing structures.
- the other sealing structures include brazing, welding, diffusion boundaries, and mechanical seals.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims (12)
- 一种多流程可拆卸板式换热器,包括固定压紧板、活动压紧板以及通过夹紧螺栓被组装在所述固定压紧板和活动压紧板之间的换热板组,其特征在于:所述换热板组包含多个配置密封垫片以形成依次连通的两个以上横向分区的侧流程换热板,所述侧流程换热板组装在一起形成冷热流道相互交替的所述换热板组,所述多流程可拆卸板式换热器的流程数等于所述侧流程换热板的横向分区的个数。
- 如权利要求1所述的多流程可拆卸板式换热器,其特征在于:仅仅在所述固定压紧板上设置接管,而无需在所述活动压紧板上设置接管。
- 如权利要求2所述的多流程可拆卸板式换热器,其特征在于:所述侧流程换热板具有二个、三个、四个或更多个所述横向分区。
- 一种多流程可拆卸板式换热器,包括固定压紧板、活动压紧板以及通过夹紧螺栓组装在所述固定压紧板和活动压紧板之间的换热板组,其特征在于:所述换热板组包含一组配置密封垫片以形成彼此连通的两个横向分区的侧流程换热板,和N-1组配置密封垫片以形成彼此隔离的两个横向分区的隔离区换热板,所述侧流程换热板和所述隔离区换热板组装在一起形成冷热流道相互交替的所述换热板组,所述多流程可拆卸板式换热器的流程数为2N,其中N为大于等于2的自然数。
- 如权利要求4所述的多流程可拆卸板式换热器,其特征在于:仅仅在所述固定压紧板上设置接管,而无需在所述活动压紧板上设置接管。
- 如权利要求5所述的多流程可拆卸板式换热器,其特征在于:所述侧流程换热板使用于紧靠所述活动压紧板的两个流程,所述隔离区换热板使用于除此以外的所有其它流程。
- 一种专用于权利要求1所述的多流程可拆卸板式换热器的换热板,其特征在于:所述换热板为侧流程换热板,所述侧流程换热板在其周边和中部设有平直沟纹用于配置密封垫片,以形成依次连通的两个以上横向分区。
- 一种专用于权利要求4所述的多流程可拆卸板式换热器的换热板,其特征在于:所述换热板为侧流程换热板或隔离区换热板,所述侧流程换热板在其周边和中部设有平直沟纹用于配置密封垫片,以形成彼此连通的两个横向分区;所述隔离区换热板在其周边和中部设有平直沟纹用于配置密封垫片,以形成彼此隔离的两个横向分区。
- 如权利要求7或8所述的专用于多流程可拆卸板式换热器的换热板,其特征在于:所述换热板可通过几何特征的变化以取得不同的热力性能,具有不同几何特征的所述换热板可以混合配置在同一换热板组内。
- 如权利要求9所述的专用于多流程可拆卸板式换热器的换热板,其特征在于:所述几何特征包括平滑表面、V形鱼纹波、圆形或不规则的凹坑、钉柱以及其它用于加强换热的结构。
- 如权利要求7或8所述的专用于多流程可拆卸板式换热器的换热板,其特征在于:所述密封垫片的密封和分隔功能可部分地或完全地由其它密封结构取代。
- 如权利要求11所述的专用于多流程可拆卸板式换热器的换热板,其特征在于:所述其它密封结构包括钎焊、焊接、扩散边界以及机械密封。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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AU2017304787A AU2017304787A1 (en) | 2016-07-28 | 2017-07-20 | Multi-process detachable heat exchanger and dedicated heat exchange plate thereof |
EP17833477.7A EP3492854A4 (en) | 2016-07-28 | 2017-07-20 | DETACHABLE MULTIPROCESS HEAT EXCHANGER AND DEDICATED HEAT EXCHANGER PLATE THEREFOR |
US16/346,544 US20190310023A1 (en) | 2016-07-28 | 2017-07-20 | Multi-process detachable heat exchanger and dedicated heat exchange plate thereof |
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CN201610607994.2 | 2016-07-28 | ||
CN201610607994.2A CN107664445A (zh) | 2016-07-28 | 2016-07-28 | 多流程可拆卸板式换热器及其专用换热板 |
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WO2018019174A1 true WO2018019174A1 (zh) | 2018-02-01 |
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PCT/CN2017/093650 WO2018019174A1 (zh) | 2016-07-28 | 2017-07-20 | 多流程可拆卸板式换热器及其专用换热板 |
Country Status (5)
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US (1) | US20190310023A1 (zh) |
EP (1) | EP3492854A4 (zh) |
CN (1) | CN107664445A (zh) |
AU (1) | AU2017304787A1 (zh) |
WO (1) | WO2018019174A1 (zh) |
Cited By (2)
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EP3738657A1 (en) | 2019-05-16 | 2020-11-18 | Alfa Laval Corporate AB | A plate heat exchanger, a heat exchanging plate and a method of treating a feed such as sea water |
CN114623630A (zh) * | 2020-12-09 | 2022-06-14 | 广东美的白色家电技术创新中心有限公司 | 换热器及洗碗机 |
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CN112902446B (zh) * | 2021-03-05 | 2022-05-13 | 山东自贸区金喆新能源科技有限公司 | 一种具有高效储能换热器的电蓄热锅炉 |
CN113294941A (zh) * | 2021-07-05 | 2021-08-24 | 珠海市华晶农谷微冻瞬冷科学研究院 | 一种制冷蒸发系统的专用板式蒸发器及其工作方法 |
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CN114623630A (zh) * | 2020-12-09 | 2022-06-14 | 广东美的白色家电技术创新中心有限公司 | 换热器及洗碗机 |
Also Published As
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CN107664445A (zh) | 2018-02-06 |
US20190310023A1 (en) | 2019-10-10 |
AU2017304787A1 (en) | 2019-05-30 |
EP3492854A4 (en) | 2020-07-29 |
EP3492854A1 (en) | 2019-06-05 |
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