CN111174609A - Plate type combined heat exchanger - Google Patents
Plate type combined heat exchanger Download PDFInfo
- Publication number
- CN111174609A CN111174609A CN202010102571.1A CN202010102571A CN111174609A CN 111174609 A CN111174609 A CN 111174609A CN 202010102571 A CN202010102571 A CN 202010102571A CN 111174609 A CN111174609 A CN 111174609A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 88
- 238000001816 cooling Methods 0.000 claims abstract description 82
- 239000003507 refrigerant Substances 0.000 claims description 56
- 238000003825 pressing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000000306 component Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 240000004282 Grewia occidentalis Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- F28D9/04—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 being formed by spirally-wound plates or laminae
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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
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
-
- 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
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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
The invention belongs to the technical field of heat exchangers, and discloses a plate type combined heat exchanger which comprises a heating core body, a cooling core body and a connecting support, wherein the upper part of the connecting support is provided with an exhaust hole, and the exhaust hole is communicated between an upper heat exchange medium main flow channel of the heating core body and an upper heat exchange medium main flow channel of the cooling core body and is used for leading gas of the upper heat exchange medium main flow channel of the cooling core body to be introduced into the upper heat exchange medium main flow channel of the heating core body; the heating core body comprises a high-temperature medium outlet pipe, the high-temperature medium outlet pipe is communicated with the upper high-temperature medium main flow channel of the heating core body, an external exhaust pipe is further arranged on the high-temperature medium outlet pipe, and the external exhaust pipe can exhaust gas in the high-temperature medium outlet pipe. Through the structure, the plate type combined heat exchanger can discharge gas generated in heat exchange media and high-temperature media, so that the gas is prevented from being accumulated in the plate type combined heat exchanger, the heat exchange performance of the plate type combined heat exchanger is improved, and the service life of the plate type combined heat exchanger is prolonged.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a plate type combined heat exchanger.
Background
The new energy automobile heat exchanger is used as a new product in the automobile heat exchanger, and the application of the new energy automobile heat exchanger is more and more extensive along with the development of the new energy automobile industry. In a new energy automobile heat management system, a heat exchanger is taken as one of core components, the heat exchanger is required to have the characteristics of high heat exchange efficiency, reliable performance and the like, and the heat exchanger not only can be used for cooling a vehicle power battery, a super charging pile and electronic equipment, but also can be used for heating the equipment.
At present, in order to realize the heating and cooling functions of a new energy automobile thermal management system, the requirement of having the cooling and heating functions is usually met through a plate-type combined heat exchanger with a heating core body and a cooling core body, the integration level is high, the occupied space can be reduced, and the use cost is low.
However, in the heating process of the plate-type combined heat exchanger, gas is generated due to the temperature rise and evaporation of the internal heat exchange medium, so that a gas chamber is easily generated inside the plate-type combined heat exchanger; and because the high-temperature medium is always at a higher temperature and is easy to evaporate to generate gas, a gas chamber is generated in a main flow channel of the high-temperature medium, and long-time accumulation of the gas chamber can not only influence the overall heat exchange performance of the heat exchanger, but also easily cause cavitation on the heat exchanger, accelerate aging of heat exchanger materials and influence the service life of the plate type combined heat exchanger.
Disclosure of Invention
The invention aims to provide a plate type combined heat exchanger which can discharge gas generated in a heat exchange medium and a high-temperature medium, avoid gas accumulation in the plate type combined heat exchanger, is beneficial to improving the heat exchange performance of the plate type combined heat exchanger and prolongs the service life of the plate type combined heat exchanger.
In order to achieve the purpose, the invention adopts the following technical scheme:
a plate type combination heat exchanger comprising:
the heating core comprises a high-temperature medium inlet pipe, a high-temperature medium outlet pipe and a heat exchange medium outlet pipe, wherein the high-temperature medium inlet pipe is communicated with the high-temperature medium outlet pipe, the high-temperature medium outlet pipe is communicated with an upper high-temperature medium main flow channel of the heating core, and the heat exchange medium outlet pipe is communicated with an upper heat exchange medium main flow channel of the heating core; the high-temperature medium outlet pipe is communicated with an external exhaust pipe for exhausting gas in the high-temperature medium;
the cooling core comprises a refrigerant inlet and outlet assembly and a heat exchange medium inlet pipe, the refrigerant inlet and outlet assembly is used for introducing and discharging refrigerant, the heat exchange medium inlet pipe is communicated with an upper heat exchange medium main flow channel of the cooling core, and a lower heat exchange medium main flow channel of the cooling core is communicated with a lower heat exchange medium main flow channel of the heating core;
the connecting bracket is clamped between the heating core body and the cooling core body and can be connected with an external component; and the upper part of the connecting support is provided with an exhaust hole, two ends of the exhaust hole are respectively communicated with the upper heat exchange medium main flow channel of the heating core and the upper heat exchange medium main flow channel of the cooling core, and the exhaust hole is used for leading gas in the upper heat exchange medium main flow channel of the cooling core to be introduced into the upper heat exchange medium main flow channel of the heating core.
Preferably, a main flow channel opening is arranged at the lower part of the connecting support, and two ends of the main flow channel opening are respectively communicated with the lower heat exchange medium main flow channel of the heating core and the lower heat exchange medium main flow channel of the cooling core.
Preferably, the heating core further comprises a first bottom plate, the cooling core further comprises a second bottom plate, and the connecting bracket is connected between the first bottom plate and the second bottom plate.
Preferably, a first exhaust hole is formed in the upper portion of the first base plate, a second exhaust hole is formed in the upper portion of the second base plate, two ends of each exhaust hole are respectively communicated with the first exhaust hole and the second exhaust hole, a first flow channel opening is formed in the lower portion of the first base plate, a second flow channel opening is formed in the lower portion of the second base plate, and two ends of the main flow channel opening are respectively communicated with the first flow channel opening and the second flow channel opening.
Preferably, the cross-sectional area of the exhaust hole is set to be less than or equal to 0.5% of the cross-sectional area of the upper heat exchange medium main flow passage of the cooling core.
Preferably, an inner diameter of the external exhaust pipe is set to be one third of an inner diameter of the high temperature medium outlet pipe.
Preferably, the heating core further comprises a first bracket assembly and a second bracket assembly, the first bracket assembly is connected to the heating core, the second bracket assembly is connected to the cooling core, and the first bracket assembly and the second bracket assembly can be connected with external components.
Preferably, the heating core further comprises a first cover plate, the first bracket assembly is connected to the first cover plate, and the cooling core further comprises a second cover plate, and the second bracket assembly is connected to the second cover plate.
Preferably, the refrigerant inlet and outlet assembly includes a refrigerant inlet, a refrigerant outlet and an inlet and outlet pressing plate, the refrigerant inlet and the refrigerant outlet are both disposed on the inlet and outlet pressing plate, the refrigerant inlet is communicated with an upper refrigerant main flow passage of the cooling core, and the refrigerant outlet is communicated with a lower refrigerant main flow passage of the cooling core.
Preferably, the refrigerant inlet and outlet assembly further comprises a flow passage cover plate, the flow passage cover plate is covered on the second cover plate, and the inlet and outlet pressing plate is connected to the flow passage cover plate.
The invention has the beneficial effects that:
the invention provides a plate type combined heat exchanger, which comprises a heating core body, a cooling core body and a connecting bracket, wherein a lower heat exchange medium main flow passage on the heating core body is communicated with a lower heat exchange medium main flow passage of the cooling core body; the connecting support is clamped between the heating core and the cooling core, the upper part of the connecting support is provided with exhaust holes, an upper heat exchange medium main flow channel of the heating core is communicated with an upper heat exchange medium main flow channel of the cooling core, and a heat exchange medium inlet pipe is communicated with the upper heat exchange medium main flow channel of the cooling core; because the high-temperature medium outlet pipe is communicated with the upper high-temperature medium main flow channel of the heating core body, gas generated in the high-temperature medium can be accumulated in the high-temperature medium outlet pipe, and the gas accumulated in the high-temperature medium outlet pipe is discharged by communicating the external exhaust pipe with the high-temperature medium outlet pipe. Through the structure, the plate type combined heat exchanger can discharge gas generated in heat exchange media and high-temperature media, so that the gas is prevented from being accumulated in the plate type combined heat exchanger, the heat exchange performance of the plate type combined heat exchanger is improved, and the service life of the plate type combined heat exchanger is prolonged.
Drawings
Fig. 1 is a schematic perspective view of a plate-type heat exchanger according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a plate type combination heat exchanger provided in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a heating core of a plate type combination heat exchanger provided in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first heat exchange plate in a single flow path in a plate-type combined heat exchanger according to an embodiment of the invention;
fig. 5 is a schematic structural diagram of a first heat exchange plate in a multi-flow path in a plate type combined heat exchanger provided by the embodiment of the invention;
FIG. 6 is a cross-sectional view of a cooling core of a plate heat exchanger according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a connecting bracket of a plate-type combined heat exchanger according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a first bracket assembly of a plate type combined heat exchanger according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a second bracket assembly of the plate type combined heat exchanger according to the specific embodiment of the present invention.
In the figure:
1. heating the core; 11. a high-temperature medium inlet pipe; 12. a high-temperature medium outlet pipe; 121. an external exhaust pipe; 13. a heat exchange medium outlet pipe; 14. a first base plate; 141. a first exhaust port; 142. a first flow passage opening; 143. positioning the boss; 15. a first cover plate; 151. a positioning table; 16. a first heat exchange plate; 161. the corrugated bulges are arranged; 162. a through hole is penetrated; 2. cooling the core body; 21. a refrigerant inlet and outlet assembly; 211. a refrigerant inlet; 212. a refrigerant outlet; 213. an inlet and outlet pressure plate; 214. a runner cover plate; 22. a heat exchange medium inlet pipe; 23. a second base plate; 231. a second vent hole; 232. a second flow passage opening; 24. a second cover plate; 25. a second heat exchange plate; 3. connecting a bracket; 31. an exhaust hole; 32. a main flow channel opening; 33. positioning concave holes; 34. a material removal structure; 35. a circular opening positioning hole; 4. a first bracket assembly; 41. a first bracket; 42. a first support base; 421. positioning holes; 422. removing the structure by a process; 5. a second bracket assembly; 51. a second bracket; 52. a second support base.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention provides a plate type combined heat exchanger, as shown in fig. 1, the plate type combined heat exchanger comprises a heating core body 1, a cooling core body 2 and a connecting bracket 3, wherein the heating core body 1 and the cooling core body 2 are respectively connected to two sides of the connecting bracket 3, and the connecting bracket 3 is used for connecting the plate type combined heat exchanger to an external component. The heating core body 1 comprises a high-temperature medium inlet pipe 11, a high-temperature medium outlet pipe 12 and a heat exchange medium outlet pipe 13, wherein the high-temperature medium inlet pipe 11 is communicated with a lower high-temperature medium main flow channel of the heating core body 1, the high-temperature medium outlet pipe 12 is communicated with an upper high-temperature medium main flow channel of the heating core body 1, and the heat exchange medium outlet pipe 13 is communicated with an upper heat exchange medium main flow channel of the heating core body 1; the cooling core 2 comprises a refrigerant inlet and outlet assembly 21 and a heat exchange medium inlet pipe 22, the refrigerant inlet and outlet assembly 21 is used for introducing and discharging a refrigerant, the heat exchange medium inlet pipe 22 is communicated with an upper heat exchange medium main flow channel of the cooling core 2, a lower heat exchange medium main flow channel of the heating core 1 is communicated with a lower heat exchange medium main flow channel of the cooling core 2, so that the heat exchange medium can be introduced from the cooling core 2 and flows out from the heating core 1, the heat exchange medium can be heated and cooled in the plate type combined heat exchanger, and the plate type heat exchanger has the functions of heating and cooling.
As shown in fig. 2, the upper portion of the connecting bracket 3 is provided with an exhaust hole 31, two ends of the exhaust hole 31 are respectively communicated with the upper heat exchange medium main flow channel of the heating core 1 and the upper heat exchange medium main flow channel of the cooling core 2, so that the gas in the upper heat exchange medium main flow channel of the cooling core 2 can be introduced into the upper heat exchange medium main flow channel of the heating core 1, and when the heat exchange medium flows through the upper heat exchange medium main flow channel of the heating core 1, the gas in the heat exchange medium main flow channel can be taken away and transported to the outside of the plate type combined heat exchanger, thereby realizing the exhaust of the gas in the. Preferably, the cross-sectional area of the exhaust holes 31 is set to be less than or equal to 0.5% of the cross-sectional area of the upper heat exchange medium main flow passage of the cooling core body 2, so that the exhaust holes 31 not only facilitate the effective passage of gas, but also avoid the loss of the heat exchange medium due to the overlarge area of the exhaust holes 31.
The high temperature medium outlet pipe 12 is connected to an external exhaust pipe 121, and the high temperature medium outlet pipe 12 is connected to the upper high temperature medium main flow passage of the heating core 1, so that the gas generated in the high temperature medium can be accumulated in the high temperature medium outlet pipe 12, and the external exhaust pipe 121 can exhaust the gas accumulated in the high temperature medium outlet pipe 12. Preferably, the external exhaust pipe 121 is connected to an upper pipe wall of the high temperature medium outlet pipe 12 so that the gas accumulated in the high temperature medium outlet pipe 12 can be smoothly discharged from the external exhaust pipe 121. More preferably, the inner diameter of the external exhaust pipe 121 is set to be one third of the inner diameter of the high-temperature medium outlet pipe 12, so that efficient discharge of gas is facilitated without loss of the high-temperature medium due to an excessively large diameter of the exhaust pipe. Through the structure, the plate type combined heat exchanger can discharge gas generated in heat exchange media and high-temperature media, avoids gas accumulation in the plate type combined heat exchanger, can improve the heat exchange performance of the plate type combined heat exchanger, and prolongs the service life.
As shown in fig. 3, in this embodiment, the heating core 1 includes a first cover plate 15, a first heat exchange plate 16 and a first bottom plate 14, multiple layers of the first heat exchange plate 16 are stacked between the first cover plate 15 and the first bottom plate 14, the first bottom plate 14 is connected to one side of the connecting bracket 3, a heat exchange fluid channel for a heat exchange medium and a high temperature fluid channel for a high temperature medium are formed between the first heat exchange plate 16 and the adjacent first heat exchange plate 16, the high temperature medium and the heat exchange medium respectively flow in a specific flow channel inside the heating core 1 to realize heat exchange, and the high temperature medium completes a heating process for the heat exchange medium. Specifically, the first bottom plate 14 is provided with a first exhaust hole 141 at the upper portion thereof, and two ends of the first exhaust hole 141 are respectively communicated with the upper heat exchange medium main flow channel of the heating core 1 and the exhaust hole 31, so that the gas passing through the exhaust hole 31 can enter the upper heat exchange medium main flow channel of the heating core 1. Preferably, the corrugated protrusions 161 shaped like Chinese character 'ren' are arranged in the middle of the first heat exchange plate 16, so that the heat exchange area of the first heat exchange plate 16 can be increased, the surface area of the first heat exchange plate 16 is increased by 30-40%, and the heating efficiency of the heating core 1 is improved. More preferably, the first heat exchange plate 16 is used as a basic heat exchange unit and is formed by stamping with a 0.4mm-0.6mm double-composite aluminum plate die.
As shown in fig. 4, in particular, through holes 162 are provided at four corners of the first heat exchange plate 16, so that the heating core 1 is a single-pass core structure. As shown in fig. 5, it can be understood that part of the first heat exchanger plates 16 may be replaced by a triangular through hole 162, the specific structure and material of the first heat exchanger plates are consistent with the through hole 162, the only difference is that one corner of the four-corner through hole is a closed plane, that is, the through hole 162 is not processed, the closed corner can function to guide the fluid inside the split-path heating core 1, so that the formed heating core 1 is a multi-path core structure, and those skilled in the art can select the through hole according to actual conditions. Two adjacent first heat exchange plates 16 in the heating core 1 are sequentially overlapped to form a single fluid channel, and three first heat exchange plates 16 are overlapped into a group to form alternate and mutually non-interfering independent fluid channels. Specifically, the axial positions of the four corners of the first heat exchange plate 16 penetrating through the through holes 162 are kept consistent to form a high-temperature medium main flow channel and a heat exchange medium main flow channel.
Preferably, the high temperature medium inlet pipe 11 is connected to a lower portion of the first cover plate 15, and the high temperature medium outlet pipe 12 and the heat exchange medium outlet pipe 13 are connected to an upper portion of the first cover plate 15, so that the high temperature medium inlet pipe 11, the high temperature medium outlet pipe 12 and the heat exchange medium outlet pipe 13 can be firmly connected to the heating core 1. More preferably, the first bottom plate 14 is connected to one side of the connecting bracket 3 by welding so that the heating core 1 can be firmly connected with the connecting bracket 3 as a single body.
As shown in fig. 6, in the present embodiment, the cooling core 2 includes a second cover plate 24, a second heat exchanger plate 25 and a second bottom plate 23, multiple layers of second heat exchanger plates 25 are stacked between the second cover plate 24 and the second bottom plate 23, the second bottom plate 23 is connected to one side of the connecting bracket 3 away from the first bottom plate 14, a heat exchange fluid channel for a heat exchange medium and a refrigerant channel for a refrigerant are formed between the second heat exchanger plate 25 and the adjacent second heat exchanger plate 25, the refrigerant and the heat exchange medium respectively flow in a specific flow channel inside the cooling core 2 to achieve heat exchange, and the refrigerant completes a cooling process for the heat exchange medium. Specifically, the second exhaust hole 231 is disposed at the upper portion of the second bottom plate 23, and two ends of the second exhaust hole 231 are respectively communicated with the upper heat exchange medium main flow channel of the cooling core 2 and the exhaust holes 31, so that the gas passing through the upper heat exchange medium main flow channel of the cooling core 2 can enter the exhaust holes 31. Preferably, the middle of the second heat exchanger plate 25 is provided with a herringbone corrugated protrusion 161, which can increase the heat exchange area of the second heat exchanger plate 25, increase the surface area of the second heat exchanger plate 25 by 30% -40%, and improve the heating efficiency of the cooling core 2. More preferably, the second heat exchange plate 25 is used as a basic heat exchange unit and is formed by stamping with a 0.4mm-0.6mm double-composite aluminum plate die.
Specifically, the four corners of second heat exchange plate 25 are equipped with and run through-hole 162, make the cooling core 2 of constituteing be single flow core structure, it can be understood, part second heat exchange plate 25 can also be changed into the triangle and be equipped with and run through-hole 162, its concrete structure, the material is unanimous with running through-hole 162, the only difference is that one corner is the closed plane in the four corners perforating hole, do not process and run through-hole 162 promptly, the confined one corner can play the effect of the inside fluid of water conservancy diversion branch journey cooling core 2, make the cooling core 2 of constitution be multi-flow core structure, technical personnel in the art can select according to actual conditions. Two adjacent second heat exchange plates 25 in the cooling core body 2 are sequentially overlapped to form a single fluid channel, and three second heat exchange plates 25 are overlapped into a group to form alternate and mutually independent fluid channels without interference. Specifically, the axial positions of the four corners of the second heat exchange plate 25 passing through the through holes 162 are kept consistent to form a refrigerant main flow channel and a heat exchange medium main flow channel.
Preferably, the refrigerant inlet and outlet assembly 21 is mounted on the second cover plate 24, the refrigerant inlet and outlet assembly 21 includes a refrigerant inlet 211, a refrigerant outlet 212 and an inlet and outlet pressing plate 213, the refrigerant inlet 211 and the refrigerant outlet 212 are both disposed on the inlet and outlet pressing plate 213, the refrigerant inlet 211 is communicated with the upper refrigerant main flow channel of the cooling core 2, and the refrigerant outlet 212 is communicated with the lower refrigerant main flow channel of the cooling core 2, so that the refrigerant can be introduced into and discharged from the cooling core 2. Preferably, the refrigerant inlet and outlet assembly 21 further includes a flow path cover plate 214, the flow path cover plate 214 is covered on the second cover plate 24, and the inlet and outlet pressing plate 213 is connected to the flow path cover plate 214. More preferably, the inlet/outlet pressure plate 213 is an integral pressure plate, and the inlet/outlet pressure plate 213 and the flow passage cover plate 214 are integrally welded, so that the cooling core 2 is firmly connected. Specifically, the refrigerant inlet/outlet assembly 21 further includes an electronic expansion valve or a thermal expansion valve, and the opening degree of the electronic expansion valve or the thermal expansion valve can control the physical properties and the flow rate of the refrigerant so as to control the cooling capacity of the cooling core 2. In the present embodiment, the second bottom plate 23 is connected to the side of the connecting bracket 3 away from the heating core 1 by welding, so that the cooling core 2 can be firmly connected with the connecting bracket 3 as a whole.
As shown in fig. 7, in this embodiment, a main flow channel opening 32 is disposed at a lower portion of the connecting bracket 3, and two ends of the main flow channel opening 32 are respectively communicated with the main flow channel of the lower heat exchange medium of the heating core 1 and the main flow channel of the lower heat exchange medium of the cooling core 2, so that the heat exchange medium in the main flow channel of the lower heat exchange medium of the heating core 1 can pass through the connecting bracket 3 and enter the main flow channel of the lower heat exchange medium of the cooling core 2, thereby realizing the flow of the heat exchange medium in the whole plate heat exchanger, and realizing the heat exchange with the high-temperature medium or the refrigerant. Specifically, the lower portion of the first bottom plate 14 is provided with a first flow channel opening 142, the lower portion of the second bottom plate 23 is provided with a second flow channel opening 232, two ends of the first flow channel opening 142 are respectively communicated with the lower heat exchange medium main flow channel of the heating core 1 and the main flow channel opening 32, and two ends of the second flow channel opening 232 are respectively communicated with the lower heat exchange medium main flow channel of the cooling core 2 and the main flow channel opening 32.
Preferably, the connecting bracket 3 is provided with a positioning concave hole 33, the first bottom plate 14 and the second bottom plate 23 are provided with a positioning boss 143 on one side close to the connecting bracket 3, and the positioning boss 143 can be inserted into the positioning concave hole 33, so that the first bottom plate 14 and the second bottom plate 23 can be positioned relative to the connecting bracket 3. More preferably, the connecting bracket 3 is provided with a material removing structure 34, and the material removing structure 34 is used for removing redundant material on the connecting bracket 3, so that the weight of the connecting bracket 3 can be reduced, the material consumption can be reduced, and the welding yield of the first bottom plate 14, the second bottom plate 23 and the connecting bracket 3 can be improved. In this embodiment, the connecting bracket 3 is provided with a circular opening positioning hole 35 for connecting the plate type heat exchanger with an external component, so that the connection is convenient.
In this embodiment, the plate heat exchanger further includes a first bracket assembly 4 and a second bracket assembly 5, the first bracket assembly 4 is connected to the heating core 1 for supporting the plate heat exchanger, and the second bracket assembly 5 is connected to the cooling core 2 for supporting the plate heat exchanger. As shown in fig. 8, preferably, the first bracket assembly 4 includes a first bracket 41 and a first bracket base 42, the first bracket 41 is connected to the first bracket base 42 through bolts, and the first bracket base 42 is welded to the first cover plate 15, so that the first bracket assembly 4 can firmly support the plate type combination heat exchanger. More preferably, the first bracket 41 is provided with a circular opening positioning hole 35 for connecting the plate type heat exchanger with an external component, so that the connection is convenient. Specifically, the first bracket base 42 is provided with a positioning hole 421, the first cover plate 15 is provided with a positioning table 151, and the positioning table 151 can be inserted into the positioning hole 421, so that the positioning and assembling of the first bracket base 42 and the first cover plate 15 are facilitated. Preferably, the first bracket base 42 is made of aluminum, which has light weight and high connection strength. More preferably, the first frame base 42 is provided with a process removing structure 422, which facilitates welding the first frame base 42 to the first cover plate 15.
As shown in fig. 9, the second bracket assembly 5 includes a second bracket 51 and a second bracket base 52, the second bracket 51 is connected to the second bracket base 52 through bolts, and the second bracket base 52 is welded to the second cover plate 24, so that the second bracket assembly 5 can firmly support the plate type heat exchanger. More preferably, the second bracket 51 is provided with a circular opening positioning hole 35 for connecting the plate type combined heat exchanger with an external component, so that the connection is convenient. Specifically, the second bracket base 52 is provided with a positioning hole 421, the second cover plate 24 is provided with a positioning table 151, and the positioning table 151 can be inserted into the positioning hole 421, so that the positioning and assembling of the second bracket base 52 and the second cover plate 24 are facilitated. Preferably, the second bracket base 52 is made of aluminum, which has light weight and high connection strength. More preferably, the second frame base 52 is provided with a process removing structure 422 to facilitate the welding of the second frame base 52 to the second cover plate 24.
The working process of the plate type combination heat exchanger provided by the embodiment of the present invention is explained in one step.
When the plate type combined heat exchanger is used for refrigerating, only the cooling core body 2 works, the heating core body 1 does not work, namely, a high-temperature medium does not flow into the heating core body 1, only a refrigerant is introduced into the cooling core body 2 from the refrigerant inlet 211, the refrigerant and a heat exchange medium in the cooling core body 2 carry out heat exchange, so that the heat exchange medium is cooled, and at the moment, the heating core body 1 is only used as a circulation channel of the heat exchange medium for the heat exchange medium in the cooling core body 2 to flow out from the heat exchange medium outlet pipe 13 through a lower heat exchange medium main channel and an upper heat exchange medium main channel in the heating core body.
When the plate type combined heat exchanger heats, only the heating core 1 works, the cooling core 2 does not work, namely, the refrigerant does not flow into the cooling core 2, only the high-temperature medium is introduced into the heating core 1 from the high-temperature medium inlet pipe 11, the high-temperature medium and the heat exchange medium in the heating core 1 perform heat exchange, so that the heat exchange medium is heated, and at the moment, the cooling core 2 only serves as a circulation channel of the heat exchange medium, so that the heat exchange medium introduced from the heat exchange medium inlet pipe 22 flows into the heating core 1 through an upper heat exchange medium main channel and a lower heat exchange medium main channel in the cooling core 2. In the heating process, when the high-temperature medium flows in the heating core 1, the generated gas rises to the top of the main flow channel of the high-temperature medium at the upper part of the heating core 1 along with the flow of the high-temperature medium, most of the gas is discharged out of the heating core 1 through the external exhaust pipe 121, and a small part of the gas is discharged out of the heating core 1 along with the high-temperature medium through the high-temperature medium outlet pipe 12; the heat exchange medium enters the cooling core body 2 from the heat exchange medium inlet pipe 22 and enters the heating core body 1 from the main flow passage opening 32, the gas in the heat exchange medium in the cooling core body 2 is accumulated in the upper heat exchange medium main flow passage of the cooling core body 2, and is introduced into the upper heat exchange medium main flow passage of the heating core body 1 from the exhaust hole 31, and finally is discharged out of the heating core body 1 along with the heat exchange medium.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A plate type combination heat exchanger, comprising:
the heating core body (1) comprises a high-temperature medium inlet pipe (11), a high-temperature medium outlet pipe (12) and a heat exchange medium outlet pipe (13), wherein the high-temperature medium inlet pipe (11) is communicated with the high-temperature medium outlet pipe (12), the high-temperature medium outlet pipe (12) is communicated with an upper high-temperature medium main flow channel of the heating core body (1), and the heat exchange medium outlet pipe (13) is communicated with an upper heat exchange medium main flow channel of the heating core body (1); the high-temperature medium outlet pipe (12) is communicated with an external exhaust pipe (121) for exhausting gas in the high-temperature medium;
the cooling core body (2) comprises a refrigerant inlet and outlet assembly (21) and a heat exchange medium inlet pipe (22), the refrigerant inlet and outlet assembly (21) is used for introducing and discharging refrigerant, the heat exchange medium inlet pipe (22) is communicated with an upper heat exchange medium main flow passage of the cooling core body (2), and a lower heat exchange medium main flow passage of the cooling core body (2) is communicated with a lower heat exchange medium main flow passage of the heating core body (1);
the connecting support (3) is clamped between the heating core body (1) and the cooling core body (2), and the connecting support (3) can be connected with an external component; the upper portion of linking bridge (3) is equipped with exhaust hole (31), the both ends of exhaust hole (31) communicate respectively in the upper portion heat transfer medium sprue of heating core (1) with the upper portion heat transfer medium sprue of cooling core (2), exhaust hole (31) are used for making the gas of the upper portion heat transfer medium sprue of cooling core (2) lets in the upper portion heat transfer medium sprue of heating core (1).
2. A plate type combined heat exchanger according to claim 1, characterized in that the lower part of the connecting bracket (3) is provided with a main flow channel opening (32), and both ends of the main flow channel opening (32) are respectively communicated with the lower heat exchange medium main flow channel of the heating core (1) and the lower heat exchange medium main flow channel of the cooling core (2).
3. A plate heat exchanger according to claim 2, characterised in that the heating core (1) further comprises a first bottom plate (14), the cooling core (2) further comprises a second bottom plate (23), and the connection bracket (3) is connected between the first bottom plate (14) and the second bottom plate (23).
4. A plate type combined heat exchanger according to claim 3, wherein the first bottom plate (14) is provided with a first exhaust hole (141) at the upper part thereof, the second bottom plate (23) is provided with a second exhaust hole (231) at the upper part thereof, both ends of the exhaust hole (31) are respectively communicated with the first exhaust hole (141) and the second exhaust hole (231), the first bottom plate (14) is provided with a first flow passage opening (142) at the lower part thereof, the second bottom plate (23) is provided with a second flow passage opening (232) at the lower part thereof, and both ends of the main flow passage opening (32) are respectively communicated with the first flow passage opening (142) and the second flow passage opening (232).
5. A plate type combination heat exchanger according to claim 1, characterized in that the cross-sectional area of the gas discharge hole (31) is set to be less than or equal to 0.5% of the cross-sectional area of the upper heat exchange medium main flow channel of the cooling core (2).
6. A plate combined heat exchanger according to claim 1, characterised in that the inner diameter of the external exhaust pipe (121) is arranged to be one third of the inner diameter of the high temperature medium outlet pipe (12).
7. A plate heat exchanger according to claim 1, further comprising a first bracket assembly (4) and a second bracket assembly (5), the first bracket assembly (4) being connected to the heating core (1), the second bracket assembly (5) being connected to the cooling core (2), the first bracket assembly (4) and the second bracket assembly (5) being connectable to external components.
8. A plate heat exchanger according to claim 7, wherein the heating core (1) further comprises a first cover plate (15), the first bracket assembly (4) being attached to the first cover plate (15), and the cooling core (2) further comprises a second cover plate (24), the second bracket assembly (5) being attached to the second cover plate (24).
9. The plate type combination heat exchanger according to claim 8, wherein the refrigerant inlet and outlet assembly (21) comprises a refrigerant inlet (211), a refrigerant outlet (212) and an inlet and outlet pressing plate (213), the refrigerant inlet (211) and the refrigerant outlet (212) are both arranged on the inlet and outlet pressing plate (213), the refrigerant inlet (211) is communicated with an upper refrigerant main flow passage of the cooling core (2), and the refrigerant outlet (212) is communicated with a lower refrigerant main flow passage of the cooling core (2).
10. The plate type combination heat exchanger according to claim 9, wherein the refrigerant inlet and outlet assembly (21) further comprises a flow passage cover plate (214), the flow passage cover plate (214) is covered on the second cover plate (24), and the inlet and outlet pressure plate (213) is connected to the flow passage cover plate (214).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102571.1A CN111174609A (en) | 2020-02-19 | 2020-02-19 | Plate type combined heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010102571.1A CN111174609A (en) | 2020-02-19 | 2020-02-19 | Plate type combined heat exchanger |
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| CN111174609A true CN111174609A (en) | 2020-05-19 |
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| CN202010102571.1A Pending CN111174609A (en) | 2020-02-19 | 2020-02-19 | Plate type combined heat exchanger |
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| CN106225529A (en) * | 2016-08-23 | 2016-12-14 | 浙江银轮机械股份有限公司 | A kind of plate type heat exchanger |
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