WO2020134907A1 - 多回路板式换热器 - Google Patents

多回路板式换热器 Download PDF

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Publication number
WO2020134907A1
WO2020134907A1 PCT/CN2019/122699 CN2019122699W WO2020134907A1 WO 2020134907 A1 WO2020134907 A1 WO 2020134907A1 CN 2019122699 W CN2019122699 W CN 2019122699W WO 2020134907 A1 WO2020134907 A1 WO 2020134907A1
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WO
WIPO (PCT)
Prior art keywords
heat exchange
fluid
channel
port
channels
Prior art date
Application number
PCT/CN2019/122699
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English (en)
French (fr)
Inventor
佩尔蒂埃·彼埃尔·奥利弗
张志锋
魏文建
Original Assignee
丹佛斯有限公司
张志锋
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 丹佛斯有限公司, 张志锋 filed Critical 丹佛斯有限公司
Priority to EP19906570.7A priority Critical patent/EP3904816A4/en
Priority to US17/418,065 priority patent/US20220099381A1/en
Publication of WO2020134907A1 publication Critical patent/WO2020134907A1/zh

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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
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • 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
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles

Definitions

  • the invention relates to the fields of refrigeration, air conditioning, industrial refrigeration, heating and the like, in particular to a multi-circuit plate heat exchanger.
  • Plate heat exchangers For plate heat exchangers, there are usually four ports for stamping. Two of the ports are for one working fluid, and the other two ports are for the other working fluid. Plate heat exchangers used in multi-circuit systems have six or more ports. This approach has the following deficiencies or disadvantages:
  • the purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects existing in the prior art.
  • a multi-circuit plate heat exchanger includes:
  • the at least two fluid channels share one port channel, and the at least two fluid channels are arranged side by side along the radial direction of the port channel.
  • the at least two fluid channels are separated from each other by a partition.
  • At least a portion of the partition is integrally formed on the respective heat exchange plates or is independent of the heat exchange plates.
  • the divider includes a flange bridge that passes the region where the corresponding heat exchange plate is at one of the at least two fluid channels in the port channel Deformed.
  • the at least two fluid channels include a first fluid channel for one of the at least two refrigerants and a second fluid channel for the other of the at least two refrigerants Fluid channels,
  • the heat exchange channel includes a first heat exchange channel for one of the at least two refrigerants and a second heat exchange channel for the other of the at least two refrigerants,
  • the first fluid channel is in fluid communication with the first heat exchange channel through a first fluid channel hole
  • the second fluid channel is in fluid communication with the second heat exchange channel through a second fluid channel hole.
  • the first fluid channel holes and the second fluid channel holes are alternately arranged along the extending direction of the port channel.
  • the first fluid channel hole and the second fluid channel hole are located in respective corresponding fluid channels.
  • At least one of the first fluid channel hole and the second fluid channel hole is provided on an annular member, and at least a portion of the annular member is integrally formed in the corresponding heat exchange On the plate or independently of the heat exchange plate.
  • the ring member includes a flange that deforms the region of the corresponding heat exchange plate at one of the at least two fluid channels in the port channel While forming.
  • a part of the ring member is provided in the first fluid channel, and a part is provided in the second fluid channel, the ring member provided with the first fluid channel hole
  • the portion provided in the second fluid channel blocks the second fluid channel and the first heat exchange channel
  • a portion of the ring-shaped member provided with the second fluid channel hole provided in the first fluid channel blocks the first fluid channel and the second heat exchange channel.
  • the ring-shaped member provided with the first fluid passage hole is located between adjacent heat exchange plates forming the first heat exchange passage;
  • the ring-shaped member provided with the second fluid passage hole is located between adjacent heat exchange plates forming the second heat exchange passage.
  • the partition includes a plurality of baffles, the baffles are disposed in the ring, the ends of the plurality of baffles are connected to partition the at least one port channel into Said at least two fluid channels.
  • the plate heat exchanger further includes a port connector connected to the at least one port channel, the port connector includes at least two connection channels separated by a partition, the at least two The two connecting channels respectively communicate with the at least two fluid channels, thereby forming two mutually isolated channels for refrigerant inflow or outflow.
  • Figure 1 shows a schematic diagram of the port structure arrangement used in the prior art plate heat exchanger
  • FIG. 2 shows a schematic diagram of the port structure arrangement of a plate heat exchanger according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view of a plate heat exchanger according to an embodiment of the present invention.
  • FIG. 4A is a cross-sectional view of a plate heat exchanger according to another embodiment of the present invention.
  • 4B and 4C respectively show the structural schematic diagrams of the partitions in the port channels on two adjacent heat exchange plates
  • FIG. 5 is a cross-sectional view of a plate heat exchanger according to another embodiment of the present invention.
  • 6A and 6B respectively show a schematic structural view and a cross-sectional view of a port connector according to an embodiment of the present invention.
  • FIG. 1 a schematic diagram about the layout of ports on a plate heat exchanger in the prior art is shown.
  • the port arrangement shown in FIG. 1 can be used in a three-circuit refrigeration system.
  • Ports 11 and 12 are inlets and outlets for the first fluid respectively, while ports 21 and 22 are inlets and outlets for the second fluid respectively; and ports 31 and 32 are inlets for the third fluid respectively And export.
  • each port or port channel corresponds to a port connector.
  • a working fluid requires two port channels and two port connectors, where the port of one port channel is the inlet and the port of the other port channel is the outlet.
  • This common design and port layout limits or reduces the effective heat transfer area and strength of the plate heat exchanger, so that the ports need to be enlarged to increase the heat transfer capacity.
  • the present invention provides a new inventive concept to at least partially alleviate or eliminate these deficiencies.
  • the present invention provides a special port design that can join ports or port channels of at least two working fluids.
  • the new special port design can also allow simple piping connections and make the corresponding refrigeration system more compact. Further, it can also allow the number of port connectors connected to it to be reduced, thereby reducing costs.
  • the present invention provides a port channel including at least two fluid channels separated from each other for at least two refrigerant inflows or outflows.
  • At least two port channels for at least two refrigerants in the prior art are replaced by dividing the port channel originally used for one fluid into at least two port channels independent of each other.
  • the problems discussed in the prior art due to the need to provide more port channels on the plate heat exchanger are at least partially solved.
  • the solution of the present invention can increase the effective heat transfer area by reducing the number of port channels, and can also simplify the complexity of the pipe connection to the port channels to a certain extent.
  • the solution of the present invention can reduce costs, simplify complexity, and improve the performance of the plate heat exchanger.
  • the invention lies in expanding the effective heat exchange area and simplifying the connection between the port connector and the plate heat exchanger without losing strength and performance. Therefore, it is proposed to divide one port channel into at least two fluid channels (for example, the at least two fluid channels are arranged side by side along the radial direction of the port channel).
  • the at least two refrigerant fluids flow through the at least two fluid passages in the port passages respectively, and are relatively independent without causing the refrigerant fluids to mix with each other.
  • the at least two refrigerant fluids referred to in the present invention are not limited to whether the refrigerant fluid types are the same. For example, it may be the same type of refrigerant fluid, or it may be a different type of refrigerant fluid.
  • the concept of the plate heat exchanger in one embodiment of the present invention is specifically:
  • the plate heat exchanger has a multi-circuit system and includes:
  • the at least two fluid channels share one port channel, and the at least two fluid channels are arranged side by side along the radial direction of the port channel.
  • one port channel as shown in FIG. 1 is divided into two fluid channels, namely a first fluid channel and a second fluid channel.
  • the design concept of the present invention is explained and explained by taking one port channel as shown in FIG. 1 divided into two fluid channels as an example.
  • one port channel can also be divided into three or more fluid channels, the arrangement or structural arrangement of which is similar to the case of dividing into two fluid channels, so it is no longer one by one for example.
  • a circular port channel for the inflow heat exchange medium at the lower left corner is divided into two fluid channels 111 and 121 for the inflow fluid, and accordingly, the A circular port channel of the heat medium is divided into two fluid channels 112 and 122 for the outflow of fluid.
  • the circular port channel 131 in the upper right corner is still used to flow in another fluid
  • the circular port channel 132 in the lower right corner is used to flow out another fluid, such as a coolant.
  • the positions of all port channels are not limited to those shown in the figure.
  • the two fluid channels 131 and 132 provided on the right side can also be divided into at least two fluid channels according to the design concept of the present invention.
  • those skilled in the art can perform select.
  • At least one of the port channel where the fluid channels 111 and 121 are located and the port channel where the fluid channels 112 and 122 are located can also be divided into at least three fluid channels, one of which is used for the inflow or outflow of the refrigerant, thereby
  • the illustrated fluid channels 131 and/or 132 may not be separately provided.
  • the design concept of the present invention is mainly described by taking the port channel of the inflow fluid as an example. However, the design concept of the present invention can also be applied to the port channel of the outflow fluid, and the specific details will not be repeated here.
  • FIG. 3 a cross-sectional view of a plate heat exchanger according to an embodiment of the present invention is shown, in which a port channel is divided into two by a partition 141 such as a baffle and a ring 142 such as a distribution ring Fluid channels 111, 121.
  • a partition 141 such as a baffle
  • a ring 142 such as a distribution ring Fluid channels 111, 121.
  • the two fluid passages 111 and 121 include a first fluid passage 111 for one refrigerant among the two refrigerants, and a second fluid passage 121 for the other refrigerant.
  • the two heat exchange channels include a first heat exchange channel 151 for one refrigerant among the two refrigerants and a second heat exchange channel 152 for the other refrigerant.
  • a distribution ring 142 is provided in the port channel at positions corresponding to the heat exchange channels 151, 152 formed by each two heat exchange plates.
  • a baffle 141 is arranged in the middle of each distribution ring 142 to divide it into two parts sealed and isolated from each other. When installed in the port channel, the plurality of baffles 141 are aligned with each other and the ends are connected to achieve sealing isolation.
  • the plurality of baffles 141 may also be arranged as a longer single baffle, that is, one end of the baffle is inserted into the plurality of distribution rings 142 to divide them into two parts.
  • part of the plurality of distribution rings 142 is provided in the first fluid channel 111 and the other part is provided in the second fluid channel 121.
  • Some distribution rings 142 are located between adjacent heat exchange plates forming the corresponding first heat exchange channels 151, and other distribution rings 142 are located between adjacent heat exchange plates forming the corresponding second heat exchange channels 152.
  • the first fluid channel 111 is in fluid communication with the first heat exchange channel 151 through the first fluid channel hole 1111 provided on the distribution ring 142, and the portion of the distribution ring 142 inside the second fluid channel 121 can be used to block the second The fluid channel 121 and the first heat exchange channel 151.
  • the second fluid channel 121 is in fluid communication with the second heat exchange channel 152 through the second fluid channel hole 1211 provided on the distribution ring 142.
  • the portion of the distribution ring 142 located in the first fluid channel 111 can be used to block the first fluid channel 111 ⁇ Heat exchange channel 152.
  • the portion of the distribution ring located in the other fluid channel can be used to block the other fluid channel and the heat exchange channel.
  • part of one distribution ring 142 functions as a distributor and the other part functions as a gasket for isolation, so the present invention can reduce the number of distributors and gaskets by at least 50%.
  • first fluid passage hole 1111 and the second fluid passage hole 1211 also extend along the extension direction of the port passage ( That is, the upper and lower directions of the drawing pages are alternately arranged.
  • the first fluid channel hole 1111 and the second fluid channel hole 1211 are located in respective fluid channels 151, 152.
  • first fluid channel 111 is in fluid communication with the first heat exchange channel 151 through the first fluid channel hole 1111
  • second fluid channel 121 is in fluid communication with the second heat exchange channel 152 through the second fluid channel hole 1211.
  • fluid channel hole Although only one fluid channel hole is shown to communicate with one heat exchange channel in the figure, it can be understood that a plurality of fluid channel holes may be provided to communicate with one heat exchange channel.
  • connection channels 161 and 162 are divided into two connection channels 161 and 162 by providing a partition 163 in the middle of the port connector 160.
  • the two connection channels 161 and 162 correspond to the two fluid channels 111 and 121 respectively, thereby forming two mutually isolated channels for refrigerant inflow or outflow.
  • FIG. 4A a cross-sectional view of a plate heat exchanger according to another embodiment of the present invention is shown, in which a port channel is divided into two fluids by a partition 241 integrally formed on a corresponding heat exchange plate Channel 111, 121.
  • the two fluid passages 111 and 121 include a first fluid passage 111 for one refrigerant among the two refrigerants, and a second fluid passage 121 for the other refrigerant.
  • the two heat exchange channels include a first heat exchange channel 151 for one refrigerant among the two refrigerants and a second heat exchange channel 152 for the other refrigerant.
  • first fluid channel 111 is in fluid communication with the first heat exchange channel 151 through the first fluid channel hole 1111
  • second fluid channel 121 is in fluid communication with the second heat exchange channel 152 through the second fluid channel hole 1211.
  • first fluid passage hole 1111 and the second fluid passage hole 1211 also extend along the extension direction of the port passage ( That is, the upper and lower directions of the drawing pages are alternately arranged.
  • the first fluid channel hole 1111 and the second fluid channel hole 1211 are located in respective fluid channels 151, 152.
  • fluid channel hole Although only one fluid channel hole is shown to communicate with one heat exchange channel in the figure, it can be understood that a plurality of fluid channel holes may be provided to communicate with one heat exchange channel.
  • FIG. 4A The main feature of FIG. 4A is that the partition is provided integrally formed on the corresponding heat exchange plate, while FIG. 3 is formed by a baffle independent of the heat exchange plate.
  • One function of the ring members 142, 242 is to connect a fluid channel and the corresponding heat exchange channel. For example, when the inlet port is provided, the refrigerant is distributed to the corresponding heat exchange channel through the fluid channel hole. When the outlet port is provided, it can also play a role To enhance the port strength.
  • the rings 142, 242 can also block other fluid channels and the heat exchange channels. The position and function of the ring 242 have been described in detail above with reference to the distribution ring 142 in the embodiment of FIG. 3, and will not be repeated here.
  • ring-shaped member 242 may be partially arranged to be integrally formed on the corresponding heat exchange plate, and partially be an independent component, for example, the independent distribution ring 142 may be a half ring.
  • Part of the plurality of ring-shaped parts of the heat exchanger may be integrally formed on the corresponding heat exchange plates, and part of them are independent components.
  • the partition 240 includes a flange 241.
  • the flanging bridge 241 is formed by deforming a region of the corresponding heat exchange plate in the port channel (for example, at the fluid channel).
  • FIG. 4B shows the structure of the flange bridge 241 for the first fluid channel 111
  • FIG. 4C shows the structure of the flange bridge 241 for the second fluid channel 121.
  • the structure of the flanging bridge 241 shown in FIGS. 4B and 4C is roughly similar, and the main difference is that when multiple heat exchange plates are assembled together, there are two adjacent flanking bridges 241 shown in FIGS. 4B and 4C, respectively.
  • the heat exchange plates can be assembled with each other and divide the port channel into two fluid channels. That is, the flanging bridges 241 shown in FIGS. 4B and 4C can cooperate with each other and achieve sealing isolation of the port channel by, for example, welding or the like.
  • annular member 242 is further provided at a position of each heat exchange plate corresponding to the port channel, and at least a portion of the annular member 242 is integrally formed on the corresponding heat exchange plate.
  • the ring member 242 can also be provided as a separate component independent of the heat exchange plates, and then welded to each heat exchange plate.
  • the ring 242 includes a plurality of flanges formed by deforming regions of the corresponding heat exchange plates in the port channel (for example, at one fluid channel).
  • the flanges of adjacent heat exchange plates cooperate with each other and are connected together by, for example, crimping, welding, or bonding.
  • a part of the ring-shaped member 242 is disposed in the first fluid channel 111 and is located between adjacent heat exchange plates forming the corresponding first heat-exchange channel 151; accordingly, the ring-shaped member 242 The remaining part of is located in the second fluid channel 121 and between adjacent heat exchange plates forming the corresponding second heat exchange channel 152.
  • connection channels 161 and 162 correspond to the two fluid channels 111 and 121 respectively, thereby forming two mutually isolated channels for refrigerant inflow or outflow.
  • the function of the ring in FIG. 4A is substantially the same as that of the distribution ring shown in FIG. 3, so it will not be described in detail.
  • FIG. 5 a cross-sectional view of a plate heat exchanger according to another embodiment of the present invention is shown, in which only the port channel portion divided into two fluid channels is shown.
  • FIG. 5 An example of the combination of the ring member in FIG. 4 and the separator shown in FIG. 3 is shown in FIG. 5.
  • the partitions are not integrally formed on the corresponding heat exchange plates, but are formed by a plurality of baffles.
  • FIG. 5 at least a part of the ring-shaped member is integrally formed on the corresponding heat exchange plate.
  • the plate heat exchanger includes a plate assembly 300, and the plate assembly is provided with inlet and outlet channels for three working fluids.
  • the plate assembly includes first, second, third, and fourth heat exchange plates 301, 302, 303, 304 having the same shape periphery.
  • the heat exchange plates are sequentially arranged in a cycle of the first, second, third, and fourth heat exchange plates 301, 302, 303, and 304.
  • a flow is provided between the first heat exchange plate 301 and the second heat exchange plate 302, a first heat exchange channel 151 flowing through the first fluid R1, a third heat exchange plate 303, and a fourth heat exchange plate 304 Through the second heat exchange channel 152 of the second fluid R2, and between the second heat exchange plate 302 and the third heat exchange plate 303, the fourth heat exchange plate 304 and the adjacent first heat exchange plate 301 A third heat exchange channel 153 flowing through the third fluid W is provided therebetween.
  • the plate assembly 300 further includes at least one partition space 311 corresponding to two adjacent first heat exchange channels 151 and second heat exchange channels 152 in the port channel, and in the respective fluid flow channels, the partition space 311 The other of the first fluid R1 and the second fluid R2 is closed. That is, in the first fluid channel 111, the first fluid R1 flows into the first heat exchange channel 151 through the first fluid flow channel hole 1111, and the second fluid R2 flows into the first fluid channel hole 1211 through the second fluid flow channel hole 1111. Two heat exchange channels 152.
  • the third and fourth heat exchange plates 303 and 304 for one partitioned space 311 and the first and second The ring members 142 of the two heat exchange plates 301, 302 are connected to each other at the port channel to form an annular contact portion surrounding the port channel.
  • the four heat exchange plates 301, 302, 303, and 304 are in contact with each other, for example, by crimping, welding, or bonding.
  • baffles 141 are provided between adjacent annular contact portions 314, and adjacent baffles 141 are connected to each other to divide the port channel into two fluid channels.
  • the fluid flow channel hole may be a recessed area integrally formed on the heat exchange plate, or may be a through hole passing through the port channel.
  • the shape of the fluid flow channel hole may be any shape such as a circle, a semicircle, an ellipse, a rectangle, and a trapezoid.
  • 6A and 6B respectively show a schematic structural view and a cross-sectional view of a port connector according to an embodiment of the present invention.
  • a partition 163 is provided at a substantially middle portion of the port connector 160.
  • the partition 163 it is not necessary to divide the port connector 160 into two substantially equal parts by the partition 163, or may be divided into two parts of different sizes.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

本发明公开了一种多回路板式换热器，所述板式换热器包括：多个层叠布置的换热板片；形成在所述多个换热板片中的相邻换热板片之间的换热通道；以及延伸通过所述换热板片的分别用于换热介质流入和流出的端口通道，所述端口通道中的至少一个包括彼此分隔开的用于多路制冷剂中的至少两路制冷剂流入或流出的至少两个流体通道。所述至少两个流体通道共用一个所述端口通道，且所述至少两个流体通道沿着端口通道的径向并排设置。

Description

多回路板式换热器
本申请要求于2018年12月28日递交的、申请号为201811632290.6、发明名称为“多回路板式换热器”的中国专利申请的优先权，其全部内容通过引用并入本申请中。
技术领域
本发明涉及制冷、空调、工业制冷、加热等领域，尤其涉及多回路板式换热器。
背景技术
对于板式换热器，通常冲压有四个端口。其中的两个端口用于一种工作流体，而另外的两个端口用于另一种工作流体。用于多回路系统的板式换热器，则有六个或更多的端口。这样的做法存在以下不足或不利之处：
1)因为端口处的区域不能用于进行换热，故设置过多的端口减小了有效换热面积；
2)因为端口处的区域总是板式换热器中最薄弱的部分，故设置过多的端口会减小板式换热器的强度；
3)每个端口需要连接一个端口连接器，这导致了高的潜在泄漏风险和高的成本。
发明内容
本发明的目的旨在解决现有技术中存在的上述问题和缺陷的至少一个方面。
根据本发明的一个方面，提供了一种多回路板式换热器，所述板式换热器包括：
多个层叠布置的换热板片；
形成在所述多个换热板片中的相邻的两个换热板片之间的换热通道；以及
延伸通过所述换热板片的分别用于换热介质流入和流出的端口通道，所述端口通道中的至少一个包括彼此分隔开的用于多路制冷剂中的至少两路制冷剂流入或流出的至少两个流体通道，
其中，所述至少两个流体通道共用一个所述端口通道，且所述至少两个流体通道沿着端口通道的径向并排设置。
在一些实施例中，所述至少两个流体通道通过分隔件彼此分隔开。
在一些实施例中，所述分隔件的至少一部分一体地形成在相应的所述换热板片上或者独立于所述换热板片。
在一些实施例中，所述分隔件包括翻边桥，所述翻边桥通过使所述相应的换热板片在所述端口通道中的所述至少两个流体通道中的一个处的区域变形而形成。
在一些实施例中，所述至少两个流体通道包括用于至少两路制冷剂中的一路制冷剂的第一流体通道和用于所述至少两路制冷剂中的另一路制冷剂的第二流体通道，
所述换热通道包括用于所述至少两路制冷剂中的一路制冷剂的第一换热通道和用于所述至少两路制冷剂中的另一路制冷剂的第二换热通道，
所述第一流体通道通过第一流体通道孔与所述第一换热通道流体连通，所述第二流体通道通过第二流体通道孔与所述第二换热通道流体连通。
在一些实施例中，所述第一流体通道孔和第二流体通道孔沿着所述端口通道的延伸方向交替布置。
在一些实施例中，所述第一流体通道孔和第二流体通道孔位于各自的对应的流体通道内。
在一些实施例中，所述第一流体通道孔和所述第二流体通道孔中的至少一个设置在环状件上，所述环状件的至少一部分一体地形成在相应的所述换热板片上或者独立于所述换热板片。
在一些实施例中，所述环状件包括凸缘，所述凸缘通过使所述相应的换热板片在所述端口通道中的所述至少两个流体通道中的一个处的区域变形而形成。
在一些实施例中，所述环状件的一部分设置在所述第一流体通道内，并且一部分设置在所述第二流体通道内，设置有所述第一流体通道孔的所述环状件的设置在所述第二流体通道内的部分阻隔所述第二流体通道和所述第一换热通道；和/或
设置有所述第二流体通道孔的所述环状件的设置在所述第一流体通道内的部分阻隔所述第一流体通道和所述第二换热通道。
在一些实施例中，设置有所述第一流体通道孔的所述环状件位于形成所述第一换热通道的相邻换热板片之间；和/或
设置有所述第二流体通道孔的所述环状件位于形成所述第二换热通道的相邻换热板片之间。
在一些实施例中，所述分隔件包括多个挡板，所述挡板设置在所述环状件中，所述多个挡板端部相连接以将所述至少一个端口通道分隔成所述至少两个流体通道。
在一些实施例中，所述板式换热器还包括与所述至少一个端口通道连接的端口连接器，所述端口连接器包括由隔板分隔开的至少两个连接通道，所述至少两个连接通道分别与所述至少两个流体通道对应连通，由此形成两个用于制冷剂流入或流出的相互隔离的通路。
附图说明
本发明的这些和/或其他方面和优点从下面结合附图对优选实施例的描述中将变得明显和容易理解，其中：
图1显示了用于现有技术的板式换热器的端口结构布置的示意图；
图2显示了根据本发明的实施例的板式换热器的端口结构布置的示意图；
图3是根据本发明的一个实施例的板式换热器的横截面视图；
图4A是根据本发明的另一个实施例的板式换热器的横截面视图；
图4B和4C分别显示相邻的两个换热板片上的端口通道内的分隔件的结构示意图；
图5是根据本发明的另一个实施例的板式换热器的横截面视图；
图6A和6B分别示出了根据本发明的实施例的端口连接器的结构示意图和横截面视图。
具体实施方式
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。在说明书中，相同或相似的附图标号指示相同或相似的部件。下述参照附图对本发明实施方式的说明旨在对本发明的总体发明构思进行解释，而不应当理解为对本发明的一种限制。
如图1所示，显示了关于现有技术的板式换热器上的端口布局的示意图。具体地，图1中显示的端口布置能够用于三回路制冷系统。端口11和12为分别用于第一种流体的入口和出口，而端口21和22为分别用于第二种流体的入口和出口；而端口31和32为分别用于第三种流体的入口和出口。
到目前为止，对于现有的板式换热器来说，如图1所示，都是一个端口或端口通道对应于一个端口连接器。在一般情况下，一种工作流体需要两个端口通道和两个端口连接器，其中的一个端口通道的端口是入口，而另一个端口通道的端口是出口。这种常见的设计和端口布局限缩或减小了板式换热器的有效换热面积和强度，以致于 需要扩大端口来增加换热能力。
因此，现有技术中的板式换热器普遍存在如在本发明的背景部分所提及的不足。
针对于这种技术问题，本发明提供了一种新的发明构思以期至少部分地缓解或消除这些不足。
具体地，本发明提供了一种特殊的端口设计，其可以将至少两种工作流体的端口或端口通道接合在一起。另外，该新的特殊端口设计还可以允许简单地进行管道连接，并且使得相应的制冷系统结构更紧凑。进一步地，其还可以允许减少与之连接的端口连接器的数量，从而降低了成本。
在本发明的一个示例中，本发明提供了一种端口通道，所述端口通道包括彼此分隔开的用于至少两路制冷剂流入或流出的至少两个流体通道。
在本发明中，通过将原本用于一种流体的端口通道分隔成至少两个彼此独立的端口通道，以替代现有技术中的用于至少两路制冷剂的至少两个端口通道。或者说，通过将至少两个端口通道集成到一个端口通道中，至少部分地解决了现有技术中所论述的由于需要在板式换热器上设置更多的端口通道而导致的问题。
此外，本发明的方案可以通过减少端口通道的数量而增加有效热传递的面积，并且还可以在一定程度上简化与端口通道连接的管道连接的复杂性。
显然，与现有技术的方案相比，可以至少使分配器和垫圈的数量减少50％。
从以上多个方面可以看出，本发明的方案可以降低成本，简化复杂性，同时改善板式换热器的性能。
本发明在于扩大有效换热面积和简化所述端口连接器和板式换热器之间的连接，而不损失强度和性能。因此，提出了将一个端口通道分隔成至少两个流体通道(例如所述至少两个流体通道沿着端口通道的径向并排设置)的构思。在这样的情况下，所述至少两路制冷剂流体分别流过端口通道中的至少两个流体通道，并且是相对独立的，而不会造成制冷剂流体的相互混合。需要说明的是，本发明所指的至少两路制冷剂流体不限于制冷剂流体种类是否相同。例如，可以是相同种类的制冷剂流体，也可以是不相同种类的制冷剂流体。
具体地，本发明的一个实施例中的板式换热器的构思具体是：
该板式换热器具有多回路系统并且包括：
多个层叠布置的换热板片；
形成在所述多个换热板片中的相邻的两个换热板片之间的换热通道；以及
延伸通过所述换热板片的分别用于换热介质流入和流出的端口通道，所述端口通道中的至少一个包括彼此分隔开的用于多路制冷剂中的至少两路制冷剂流入或流出的至少两个流体通道，
其中，所述至少两个流体通道共用一个所述端口通道，且所述至少两个流体通道沿着端口通道的径向并排设置。
如图2所示，在本实施例中，示出了将如图1所示的一个端口通道分隔成两个流体通道，即第一流体通道和第二流体通道。可以理解，在本实例中以将如图1所示的一个端口通道分隔成两个流体通道为例对本发明的设计构思进行了解释和说明。然而，本领域技术人员可以明白，还可以将该一个端口通道分隔成三个或更多个流体通道，其设置方式或结构布置均与分隔成两个流体通道的情形相似，故不再一一举例说明。
如图2所示，左下角处的用于流入换热介质的一个圆形的端口通道被分隔成两个用于流入流体的流体通道111和121，相应地，左上角处的用于流出换热介质的一个圆形的端口通道被分隔成两个用于流出流体的流体通道112和122。为了对比，右上角的圆形的端口通道131则仍然用于流入另一种流体，则右下角的圆形的端口通道132则用于流出另一种流体，例如载冷剂。所有端口通道的位置不限于图中所示位置。
需要说明的是，该设置在右侧的两个流体通道131和132也可以采用本发明的设计构思被分隔成至少两个流体通道，具体设置方式和数量，本领域技术人员可以根据实际需要进行选择。
另外，流体通道111、121所在的端口通道和流体通道112、122所在的端口通道中的至少一个还可以分隔成至少三个流体通道，其中一个流体通道用于载冷剂的流入或流出，从而可以不单独设置图示的流体通道131和/或132。
可以明白，两路换热介质在分别流入流体通道111和121之后，需要继续保持相互独立，相互之间避免干扰，故将在该两个流体通道111和121之间设置分隔件，或通过分隔件将它们彼此分隔开。此处，主要以流入流体的端口通道为例来说明本发明的设计构思，然而本发明的设计构思还可以应用于流出流体的端口通道，具体细节不再累述。
以下将着重说明端口通道内分隔件、流体通道孔等各个部件的具体设置方式。
如图3所示，示出了根据本发明的一个实施例的板式换热器的横截面视图，其 中端口通道通过例如挡板的分隔件141和例如分配环的环状件142分隔成两个流体通道111、121。
如图所示，所述两个流体通道111和121包括用于两路制冷剂中的一路制冷剂的第一流体通道111，和用于另一路制冷剂的第二流体通道121。所述两个换热通道包括用于两路制冷剂中的一路制冷剂的第一换热通道151和用于另一路制冷剂的第二换热通道152。
在端口通道内对应于每两个换热板片所形成的换热通道151、152的位置处设置一个分配环142。每个分配环142中间设置一个挡板141，将其分隔成相互密封隔离的两个部分。所述多个挡板141在安装在端口通道中时彼此相互对齐且端部相连接以实现密封隔离。当然，也可以把多个挡板141设置成一个更长的单个挡板，即将挡板的一端插入到多个分配环142中以将他们分隔成两个部分。
在本实例中，多个分配环142中的一部分设置在第一流体通道111内，另一部分设置在第二流体通道121内。一些分配环142位于形成相应的第一换热通道151的相邻换热板片之间，其他分配环142位于形成相应的第二换热通道152的相邻的换热板片之间。
具体地，第一流体通道111通过设置在分配环142上的第一流体通道孔1111与第一换热通道151流体连通，分配环142的位于第二流体通道121内的部分可用于阻隔第二流体通道121和第一换热通道151。而第二流体通道121通过设置在分配环142上的第二流体通道孔1211与第二换热通道152流体连通，分配环142的位于第一流体通道111内的部分可用于阻隔第一流体通道111和第二换热通道152。也就是说分配环连通相应流体通道和换热通道时，分配环位于其他流体通道内的部分可用于阻隔其他流体通道和所述换热通道。可见，一个分配环142的一部分起到分配器的作用，另一部分起到用于隔离的垫圈的作用，所以本发明可以至少使分配器和垫圈的数量减少50％。
通常，由于第一换热通道151和第二换热通道152彼此交替布置在板式换热器中，故第一流体通道孔1111和第二流体通道孔1211也沿着该端口通道的延伸方向(即大致图页的上下方向)交替布置。所述第一流体通道孔1111和第二流体通道孔1211位于各自的对应的流体通道151、152内。
具体地，第一流体通道111通过第一流体通道孔1111与第一换热通道151流体连通，而第二流体通道121通过第二流体通道孔1211与第二换热通道152流体连通。
尽管图中仅示出了一个流体通道孔与一个换热通道连通，可以理解可以设置多个流体通道孔与一个换热通道连通。
另外，在与端口通道连接的端口连接器160中，通过在该端口连接器160中间部分设置一个隔板163将其分隔开成两个连接通道161、162。所述两个连接通道161、162分别与两个流体通道111和121对应连通，由此形成两个用于制冷剂流入或流出的相互隔离的通路。
如图4A所示，示出了根据本发明的另一个实施例的板式换热器的横截面视图，其中端口通道通过一体地形成在相应的换热板片上的分隔件241分隔成两个流体通道111、121。
如图所示，所述两个流体通道111和121包括用于两路制冷剂中的一路制冷剂的第一流体通道111，和用于另一路制冷剂的第二流体通道121。所述两个换热通道包括用于两路制冷剂中的一路制冷剂的第一换热通道151和用于另一路制冷剂的第二换热通道152。
具体地，第一流体通道111通过第一流体通道孔1111与第一换热通道151流体连通，而第二流体通道121通过第二流体通道孔1211与第二换热通道152流体连通。
通常，由于第一换热通道151和第二换热通道152彼此交替布置在板式换热器中，故第一流体通道孔1111和第二流体通道孔1211也沿着该端口通道的延伸方向(即大致图页的上下方向)交替布置。所述第一流体通道孔1111和第二流体通道孔1211位于各自的对应的流体通道151、152内。
尽管图中仅示出了一个流体通道孔与一个换热通道连通，可以理解可以设置多个流体通道孔与一个换热通道连通。
图4A的主要特征在于将分隔件设置成一体地形成在相应的换热板片上，而图3则是通过独立于换热板片的挡板形成分隔件。环状件142，242的一个作用是连通一个流体通道和相应换热通道，例如设置在入口端口时，通过流体通道孔向相应的换热通道分配制冷剂，设置在出口端口时，还可以起到增强端口强度的作用。环状件142，242还可阻隔其他流体通道和所述换热通道。环状件242的位置和作用等在上文对图3的实施例中已经参考分配环142进行了详细说明，此处不再赘述。图4中的环状件242被设置成一体地形成在相应的换热板片上，而图3中环状件(分配环142)是独立的部件。可以理解的是，一个环状件242可以部分设置成一体地形成在相应的换热板片上，部分是独立的部件，例如所述独立的分配环142可以是半环。换 热器的多个环状件中，可以部分被设置成一体地形成在相应的换热板片上，部分是独立的部件。
如图4B和4C所示，该分隔件240包括翻边桥241。该翻边桥241通过使相应的换热板片在所述端口通道中(例如流体通道处)的区域变形而形成。图4B显示出了用于第一流体通道111处的翻边桥241的结构，而图4C显示出了用于第二流体通道121处的翻边桥241的结构。图4B和4C所显示的翻边桥241的结构大致类似，其主要区别在于当多个换热板片组装在一起时，分别具有图4B和4C所显示的翻边桥241的两个相邻的换热板片能够彼此装配在一起，并且将端口通道分隔成两个流体通道。也就是说，图4B和4C所显示的翻边桥241彼此能够配合并通过例如焊接等以实现对端口通道的密封隔离。
在每个换热板片对应于端口通道的位置处还设置有环状件242，该环状件242的至少一部分一体地形成在相应的换热板片上。可替代地，还可以将该环状件242设置成独立于换热板片的单独的部件，之后将其与每个换热板片焊接在一起。例如图3中的分配环142。
该环状件242包括多个凸缘，所述凸缘通过使相应的换热板片在所述端口通道中(例如一个流体通道处)的区域变形而形成。相邻换热板片的凸缘彼此配合并通过例如通过压接、焊接或粘结连在一起。
在本实例中，该环状件242的一部分设置在第一流体通道111内，且位于形成相应的第一换热通道151的相邻换热板片之间；相应地，该环状件242的剩下的部分设置在第二流体通道121内，且位于形成相应的第二换热通道152的相邻的换热板片之间。
此外，在与进口接管连接的端口通道的端口连接器160中，通过在该端口连接器160中间部分设置一个隔板163将其分隔开成两个连接通道161、162。所述两个连接通道161、162分别与两个流体通道111和121对应连通，由此形成两个用于制冷剂流入或流出的相互隔离的通路。
图4A中的环状件与图3中显示的分配环的作用大致相同，故不再详细说明。
如图5所示，示出了根据本发明的另一个实施例的板式换热器的横截面视图，其中仅示出了分隔成两个流体通道的端口通道部分。
图5中显示出了图4中的环状件与图3显示的分隔件的组合的示例。具体地，在图5中分隔件不是成一体地形成在相应的换热板片上，而是通过由多个挡板形成分隔件。图5中，环状件的至少一部分一体地形成在相应的换热板片上。
具体地，该板式换热器包括板组件300，所述板组件设有三种工质流体的进出口通道。所述板组件包括具有相同形状周边的第一、第二、第三和第四四种换热板301、302、303、304。所述换热板以第一、第二、第三和第四换热板301、302、303、304的循环周期依次设置。在第一换热板301和第二换热板302之间设置有流过第一流体R1的第一换热通道151、第三换热板303和第四换热板304之间设有流过第二流体R2的第二换热通道152，且在第二换热板302和第三换热板303之间、第四换热板304和与之相邻的第一换热板301之间设有流过第三流体W的第三换热通道153。
所述板组件300还包括在端口通道内对应于相邻的两个第一换热通道151和第二换热通道152的至少一个分隔空间311，在各自的流体流道内，所述分隔空间311对于第一流体R1和第二流体R2中的另一种流体是封闭的。也就是，在第一流体通道111内，第一流体R1通过第一流体流道孔1111流入到第一换热通道151内，而第二流体R2则通过第二流体流道孔1211流入到第二换热通道152内。
如图5所示，在至少设置了两个分隔空间311的情况下，针对于一个分隔空间311的第三和第四换热板303、304与相邻的另一分隔空间的第一和第二换热板301、302的环状件142在端口通道处彼此连接以形成一围绕所述端口通道的环形接触部。为了图示简单，仅示出了在端口通道中的三个环形接触部，作为示例。在该环形接触部处，四种换热板301、302、303、304彼此相互接触，例如通过压接、焊接或粘结在一起。
在端口通道内，相邻的环形接触部314之间设置有挡板141，相邻的挡板141的相互连接以将该端口通道分隔成两个流体通道。
在本发明的各实施例中，流体流道孔可以是一体形成于换热板片上的凹坑区域，也可以是穿过端口通道的通孔。该流体流道孔的形状可以圆形、半圆形、椭圆形、矩形、梯形等任意形状。
图6A和6B分别示出了根据本发明的实施例的端口连接器的结构示意图和横截面视图。
为了实现该端口连接器160具有两个连接通道161、162，该端口连接器160的大致中间部分设置有一个隔板163。当然，不一定必须通过隔板163将该端口连接器160分隔成两个大致相等的部分，也可以分隔成大小不等的两个部分。
以上仅为本发明的一些实施例，本领域普通技术人员将理解，在不背离本总体 发明构思的原则和精神的情况下，可对这些实施例做出改变，本发明的范围以权利要求和它们的等同物限定。

Claims (13)

  1. 一种多回路板式换热器，所述板式换热器包括：
    多个层叠布置的换热板片；
    形成在所述多个换热板片中的相邻的两个换热板片之间的换热通道；以及
    延伸通过所述换热板片的分别用于换热介质流入和流出的端口通道，所述端口通道中的至少一个包括彼此分隔开的用于多路制冷剂中的至少两路制冷剂流入或流出的至少两个流体通道，
    其中，所述至少两个流体通道共用一个所述端口通道，且所述至少两个流体通道沿着端口通道的径向并排设置。
  2. 根据权利要求1所述的多回路板式换热器，其中，
    所述至少两个流体通道通过分隔件彼此分隔开。
  3. 根据权利要求2所述的多回路板式换热器，其中，
    所述分隔件的至少一部分一体地形成在相应的所述换热板片上或者独立于所述换热板片。
  4. 根据权利要求2或3所述的多回路板式换热器，其中，
    所述分隔件包括翻边桥，所述翻边桥通过使所述相应的换热板片在所述端口通道中的区域变形而形成。
  5. 根据权利要求1或2所述的多回路板式换热器，其中，
    所述至少两个流体通道包括用于至少两路制冷剂中的一路制冷剂的第一流体通道和用于所述至少两路制冷剂中的另一路制冷剂的第二流体通道，
    所述换热通道包括用于所述至少两路制冷剂中的一路制冷剂的第一换热通道和用于所述至少两路制冷剂中的另一路制冷剂的第二换热通道，
    所述第一流体通道通过第一流体通道孔与所述第一换热通道流体连通，所述第二流体通道通过第二流体通道孔与所述第二换热通道流体连通。
  6. 根据权利要求5所述的多回路板式换热器，其中，
    所述第一流体通道孔和第二流体通道孔沿着所述端口通道的延伸方向交替布置。
  7. 根据权利要求5所述的多回路板式换热器，其中，
    所述第一流体通道孔和第二流体通道孔位于各自的对应的流体通道内。
  8. 根据权利要求5所述的多回路板式换热器，其中，
    所述第一流体通道孔和所述第二流体通道孔中的至少一个设置在环状件上，所述环状件的至少一部分一体地形成在相应的所述换热板片上或者独立于所述换热板片。
  9. 根据权利要求8所述的多回路板式换热器，其中，
    所述环状件包括凸缘，所述凸缘通过使所述相应的换热板片在所述端口通道中的区域变形而形成。
  10. 根据权利要求8所述的多回路板式换热器，其中，
    所述环状件的一部分设置在所述第一流体通道内，并且一部分设置在所述第二流体通道内，
    设置有所述第一流体通道孔的所述环状件的设置在所述第二流体通道内的部分阻隔所述第二流体通道和所述第一换热通道；和/或
    设置有所述第二流体通道孔的所述环状件的设置在所述第一流体通道内的部分阻隔所述第一流体通道和所述第二换热通道。
  11. 根据权利要求8所述的多回路板式换热器，其中，
    设置有所述第一流体通道孔的所述环状件位于形成所述第一换热通道的相邻换热板片之间；和/或
    设置有所述第二流体通道孔的所述环状件位于形成所述第二换热通道的相邻换热板片之间。
  12. 根据引用权利要求2时的权利要求8所述的多回路板式换热器，其中，
    所述分隔件包括多个挡板，所述挡板设置在所述环状件中，所述多个挡板端部相连接以将所述至少一个端口通道分隔成所述至少两个流体通道。
  13. 根据权利要求1-3、6-12中任一项所述的多回路板式换热器，还包括：
    与所述至少一个端口通道连接的端口连接器，所述端口连接器包括由隔板分隔开的至少两个连接通道，所述至少两个连接通道分别与所述至少两个流体通道对应连通，由此形成两个用于制冷剂流入或流出的相互隔离的通路。
PCT/CN2019/122699 2018-12-28 2019-12-03 多回路板式换热器 WO2020134907A1 (zh)

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EP3904816A4 (en) 2022-09-14

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