CN116202361A - Microchannel heat exchanger filter core and have its microchannel heat exchanger - Google Patents
Microchannel heat exchanger filter core and have its microchannel heat exchanger Download PDFInfo
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- CN116202361A CN116202361A CN202111472538.9A CN202111472538A CN116202361A CN 116202361 A CN116202361 A CN 116202361A CN 202111472538 A CN202111472538 A CN 202111472538A CN 116202361 A CN116202361 A CN 116202361A
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- heat exchanger
- filter
- layer
- microchannel heat
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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
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/01—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using means for separating solid materials from heat-exchange fluids, e.g. filters
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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
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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 relates to the technical field of micro-channel heat exchangers, in particular to a micro-channel heat exchanger filter element and a micro-channel heat exchanger with the same. A microchannel heat exchanger cartridge comprising: a support layer on which a plurality of flow holes are provided; the filter layer is arranged on one side of the supporting layer, the thickness of the filter layer is smaller than that of the supporting layer, the filter layer and the supporting layer are of an integrated structure, a plurality of filter holes are formed in the filter layer, and the area of each filter hole is smaller than that of each flow hole. Through set up supporting layer and filter layer on integral type structure, can guarantee that the filter layer can not be damaged in the course of the work, also can not lead to the fracture owing to fluidic high pressure and violent vibration between supporting layer and the filter layer. The service life of the micro-channel heat exchanger filter element under severe working conditions is greatly prolonged, and the micro-channel heat exchanger can stably run for a long time.
Description
Technical Field
The invention relates to the technical field of micro-channel heat exchangers, in particular to a micro-channel heat exchanger filter element and a micro-channel heat exchanger with the same.
Background
With the development of the social technology, various high-precision heat exchangers, such as printed circuit board heat exchangers and other products, have put forward higher technical requirements on the filter element of the filter due to the limitations of the use conditions and the range, such as high temperature, high pressure difference, high pressure resistance, corrosion resistance and the like.
The size of a single channel of the micro-channel heat exchanger is generally only about 0.5mm, the working condition is severe in actual use, the temperature can reach about 780 ℃, the pressure can reach about 30MPa, and the effective dredging and cleaning are difficult to carry out if the channel of the heat exchanger is blocked, so that a filter is required to be installed at the inlet end of the heat exchanger. The filter element of the filter in the prior art adopts the silk screen for filtering, the silk screen structure can be riveted or welded on the supporting frame for enhancing the stability of the silk screen, when the micro-channel heat exchanger works, the connecting point between the supporting frame and the silk screen body can be torn under the action of high temperature and high pressure and liquid vibration to cause the filter to be damaged and invalid, so that impurities enter into the channel of the micro-channel heat exchanger to cause the channel to be blocked.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the microchannel heat exchanger is blocked due to the fact that the microchannel heat exchanger filter element is easy to damage and lose efficacy in the prior art, so as to provide the microchannel heat exchanger filter element and the microchannel heat exchanger with the same.
In order to solve the technical problems, the invention provides a micro-channel heat exchanger filter element, which comprises:
a support layer on which a plurality of flow holes are provided;
the filter layer is arranged on one side of the supporting layer, the thickness of the filter layer is smaller than that of the supporting layer, the filter layer and the supporting layer are of an integrated structure, a plurality of filter holes are formed in the filter layer, and the area of each filter hole is smaller than that of each flow hole.
Optionally, the spacing between adjacent filter holes is not less than the thickness of the filter layer.
Optionally, a plurality of the filter holes are evenly distributed over the filter layer.
Optionally, the distance between adjacent flow holes is not smaller than the thickness of the supporting layer.
Optionally, the supporting layer is in a cone-shaped structure, the filtering layer is arranged on the inner side of the supporting layer, and a blocking head is arranged at one end of the supporting layer with smaller section diameter to completely close one end of the supporting layer.
Optionally, a connecting piece is fixedly installed at the end with the larger section diameter of the supporting layer.
Optionally, the blocking head is of a hollow hemispherical structure.
Optionally, the support layer and the filter layer are an integral flat plate structure.
The invention also provides a micro-channel heat exchanger, which is provided with the micro-channel heat exchanger filter element.
The technical scheme of the invention has the following advantages:
1. the invention provides a micro-channel heat exchanger filter element, comprising: a support layer on which a plurality of flow holes are provided; the filter layer is arranged on one side of the supporting layer, the thickness of the filter layer is smaller than that of the supporting layer, the filter layer and the supporting layer are of an integrated structure, a plurality of filter holes are formed in the filter layer, and the area of each filter hole is smaller than that of each flow hole.
The micro-channel heat exchanger filter element can be prepared into various forms such as a cylinder, a cone or a flat plate, and the like, and on the micro-channel heat exchanger filter element, the supporting layer is used for enhancing the integral strength of the micro-channel heat exchanger filter element, and the filter layer is used for blocking impurities in fluid. Through set up supporting layer and filter layer on integral type structure, can guarantee that the filter layer can not be damaged in the course of the work, also can not lead to the fracture owing to fluidic high pressure and violent vibration between supporting layer and the filter layer. The pressure-resistant and high-temperature-resistant degree of the micro-channel heat exchanger filter element can be greatly improved, the micro-channel heat exchanger filter element can stably operate for a long time under the use condition of the temperature of 780 ℃ and the pressure of 30MPa, the service life of the micro-channel heat exchanger filter element under the severe working condition is greatly prolonged, and the micro-channel heat exchanger can stably operate for a long time.
2. According to the micro-channel heat exchanger filter element provided by the invention, the interval between the adjacent filter holes is not smaller than the thickness of the filter layer. The thicker the sheet material, the larger the aperture of the holes allowed to be formed therein, the higher the bearing strength, but the poorer the filtering effect thereof. The filter holes can be formed on the filter layer smoothly by controlling the hole spacing between the filters to be not smaller than the thickness of the filter layer.
3. According to the microchannel heat exchanger filter element provided by the invention, the supporting layer is of a cone-shaped structure, the filter layer is arranged on the inner side of the supporting layer, the end of the supporting layer with smaller section diameter is provided with the blocking head, and one end of the supporting layer is completely closed. Through setting up the supporting layer as the toper for when fluid impacted the filter layer, certain angle was formed between impact force and the filter layer, reduced the local pressure that receives on the filter layer, reduced the influence that the fluid impact that the filter layer received, promoted the life of microchannel heat exchanger filter core.
4. According to the micro-channel heat exchanger filter element provided by the invention, the end with the larger section diameter of the supporting layer is fixedly provided with the connecting piece. The connecting piece can be a flange and other connecting structures and is used for fixedly mounting the filter element in the microchannel heat exchanger.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a microchannel heat exchanger cartridge provided in an embodiment of the present invention.
Fig. 2 is an exploded view of a microchannel heat exchanger cartridge provided in an embodiment of the present invention.
Fig. 3 is a schematic structural view of a cartridge body provided in an embodiment of the present invention.
Fig. 4 is a schematic structural view of a microchannel heat exchanger cartridge provided in another embodiment of the present invention.
Fig. 5 is a schematic view of another angle of the microchannel heat exchanger cartridge of fig. 4.
Reference numerals illustrate: 1. a support layer; 2. a filter layer; 3. a blocking head; 4. a connecting piece; 5. a flow hole; 6. and (5) filtering the holes.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Example 1
Fig. 1 to 3 show a micro-channel heat exchanger filter element provided in this embodiment, including: a support layer 1, a filter layer 2 and a plugging head 3.
The support layer 1 is provided with a plurality of flow holes 5, and in order to ensure the support strength of the support layer 1, the distance between adjacent flow holes 5 is not less than the thickness of the support layer 1. The filter layer 2 is located one side of supporting layer 1, and the thickness of filter layer 2 is less than the thickness of supporting layer 1, and filter layer 2 and supporting layer 1 are integrated into one piece structure, are provided with a plurality of filtration pore 6 on the filter layer 2, and the area of filtration pore 6 is less than the area of circulation hole 5, and the aperture of filtration pore 6 is 0.2mm. In the production process, the aperture size of the filter holes 6 can be prepared into filter holes with any size of 0.1-1 mm according to actual requirements. The spacing between adjacent filter holes 6 is not smaller than the thickness of the filter layer 2. The plurality of filter openings 6 are evenly distributed over the filter layer 2.
The supporting layer 1 is of a cone-shaped structure, the filtering layer 2 is arranged on the inner side of the supporting layer 1, the blocking head 3 is arranged at one end of the supporting layer 1 with smaller section diameter, the blocking head 3 is of a hollow hemispherical structure, and one end of the supporting layer 1 is completely closed by the blocking head 3. In order to facilitate the installation of the filter element in the microchannel filter, a flange ring is fixedly installed at the end of the support layer 1 with larger section diameter as a connecting piece 4, and the flange ring is perpendicular to the axial direction of the support layer 1.
The micro-channel heat exchanger filter element provided in this embodiment can select different metal materials or other special materials that can be welded by diffusion according to the actual working condition, and the materials with different thickness can cope with the high temperature in actual use (can select as follows: 310S stainless steel, superalloy, etc.), high strength (may be selected as: 316L stainless steel, 304H stainless steel, etc.) and corrosion resistance (can be selected from the following: titanium material such as TA 1).
The flange ring as the connecting piece 4 adopts a machining mode to support the flange connecting port so as to be convenient to install and detach in the heat exchanger, and in order to ensure structural strength, the thickness of the flange ring is not less than the sum of the thicknesses of the supporting layer 1 and the filtering layer 2, or a reinforcing rib structure is arranged between the flange ring and the supporting layer 1.
The blocking head 3 is manufactured into a hemispherical hollow shell structure by one of the processes of turning, stamping and forming or spinning and forming. The blocking head 3 may have a tapered shape, a plate shape, or the like. In order to ensure the integral structural strength of the filter element, the thickness of the blocking head 3 is not smaller than the sum of the thicknesses of the supporting layer 1 and the filtering layer 2, or a reinforcing rib structure is added between the blocking head 3 and the supporting layer 1.
The filter layer 2 is formed by processing a filter plate. The filter plate is a metal sheet manufactured by adopting processes of machining, drilling, punching, etching, laser cutting, water cutting and the like according to the requirements of the material, the thickness and the mesh number of the plate. The thicker the plate is, the larger the aperture is, the higher the bearing strength is, but the more difficult the filtering holes 6 are processed and formed. The thickness of the filtering plate is 0.15-5 mm according to the pressure-bearing strength requirement, the filtering holes 6 can be round holes, square holes, hexagonal holes and the like, and in the embodiment, the filtering holes 6 are round holes. According to the parameters of the filtering precision, the plate thickness and the like, one of etching, laser cutting or punching technology is adopted to form the filtering holes 6 with the aperture not more than 0.2mm on the filtering plate.
The support plate is formed by processing the support plate. The supporting plate is a thick metal plate manufactured by adopting machining drilling, hole punching, laser cutting, water cutting and other processes according to the material, thickness and aperture size of the plate. The thickness of the supporting plate is 3-15 mm according to the requirement of the bearing strength. The distance between the adjacent flow holes 5 is not smaller than the thickness of the support plate. The aperture of the flow-through holes 5 is greater than three times the aperture of the filter holes 6.
The integrated structure of the filter layer 2 and the supporting layer 1 is formed by processing a filter plate and a supporting plate through diffusion welding. Polishing the prepared support plate and filter plate plates to remove burrs and other attachments; the polished supporting plate and the filtering plate are cleaned by ultrasonic cleaning or chemical cleaning and the like; and (3) stacking the cleaned supporting plate and the cleaned filtering plate, and then positioning and fixing the supporting plate and the filtering plate by argon arc welding (or resistance welding, laser welding, limiting pins and the like). Finally, the supporting plate and the filtering plate are placed into a diffusion welding furnace, and the two plates are fused and welded through high temperature and high pressure to form a whole, namely the filtering core main body plate. By diffusion welding, all contact surfaces of the support plate and the filter plate can be fully and effectively welded and combined together, so that the strength of the whole structure is improved. After the solid parts around the circulating holes 5 on the supporting layer 1 and the solid parts around the filtering holes 6 on the filter plate are subjected to diffusion welding, the two plates are fused and welded into a whole, a large-area and high-strength fixing effect is generated on the filter plate, and the problem of insufficient fastening area and strength generated when fixing in a fixing mode such as riveting and local welding is solved. Damage between the filter layer 2 and the support layer 1 due to severe vibration of the fluid is avoided. After the filter element main body plate is bent and formed, the filter element main body is welded and fixed to form a conical filter element main body. The flange ring, the filter element main body and the blocking head 3 are assembled and fixed in a welding mode.
The supporting layer 1 with relatively thicker thickness can provide effective strength support, thereby ensuring structural strength, forming an integrated structure through the supporting layer 1 and the filtering layer 2, combining the supporting layer 1 and the filtering layer 2 into an effective whole, strengthening the structural strength of the filtering layer 2 and avoiding the problems of deformation and breakage of the filtering layer 2 under the working condition of high temperature and high pressure difference. The pressure-resistant and high-temperature-resistant degree of the micro-channel heat exchanger filter element can be greatly improved, the micro-channel heat exchanger filter element can stably operate for a long time under the use condition of the temperature of 780 ℃ and the pressure of 30MPa, the service life of the micro-channel heat exchanger filter element under the severe working condition is greatly prolonged, and the micro-channel heat exchanger can stably operate for a long time.
As an alternative embodiment, as shown in fig. 4 and 5, the support layer 1 and the filter layer 2 are of an integral circular flat plate structure, and a flange ring as a connecting member 4 is connected around the support layer 1.
Example 2
This embodiment provides a microchannel heat exchanger having the microchannel heat exchanger cartridge described in embodiment 1. The micro-channel heat exchanger filter element can stably operate for a long time in a high-temperature and high-pressure environment with the temperature of 780 ℃ and the pressure of 30MPa, so that the service life of the micro-channel heat exchanger filter element under severe working conditions is greatly prolonged, and the micro-channel heat exchanger can stably operate for a long time.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. A microchannel heat exchanger cartridge comprising:
a support layer (1) on which a plurality of flow holes (5) are provided;
the filter layer (2) is arranged on one side of the supporting layer (1), the thickness of the filter layer (2) is smaller than that of the supporting layer (1), the filter layer (2) and the supporting layer (1) are of an integrated structure, a plurality of filter holes (6) are formed in the filter layer (2), and the area of the filter holes (6) is smaller than that of the flow holes (5).
2. The microchannel heat exchanger cartridge according to claim 1, wherein the spacing between adjacent filter holes (6) is not smaller than the thickness of the filter layer (2).
3. A microchannel heat exchanger cartridge according to claim 2, wherein a plurality of the filter holes (6) are evenly distributed over the filter layer (2).
4. A microchannel heat exchanger filter cartridge according to any one of claims 1 to 3, wherein the spacing between adjacent flow holes (5) is not less than the thickness of the support layer (1).
5. A microchannel heat exchanger filter cartridge according to any one of claims 1 to 3, wherein the support layer (1) is of a conical tubular structure, the filter layer (2) is arranged inside the support layer (1), and a blocking head (3) is arranged at the end of the support layer (1) with smaller cross-sectional diameter, so that one end of the support layer (1) is completely closed.
6. A microchannel heat exchanger cartridge according to claim 5, wherein the end of the support layer (1) having the larger cross-sectional diameter is fixedly fitted with a connecting piece (4).
7. The microchannel heat exchanger cartridge according to claim 5, wherein the plug head (3) is of hollow hemispherical structure.
8. A microchannel heat exchanger cartridge according to any one of claims 1 to 3, wherein the support layer (1) and the filter layer (2) are of unitary planar construction.
9. A microchannel heat exchanger having a microchannel heat exchanger cartridge according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472538.9A CN116202361A (en) | 2021-12-01 | 2021-12-01 | Microchannel heat exchanger filter core and have its microchannel heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111472538.9A CN116202361A (en) | 2021-12-01 | 2021-12-01 | Microchannel heat exchanger filter core and have its microchannel heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116202361A true CN116202361A (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111472538.9A Pending CN116202361A (en) | 2021-12-01 | 2021-12-01 | Microchannel heat exchanger filter core and have its microchannel heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116202361A (en) |
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2021
- 2021-12-01 CN CN202111472538.9A patent/CN116202361A/en active Pending
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