CN213578920U - Radiation heat exchange device with sub-near-field interval - Google Patents
Radiation heat exchange device with sub-near-field interval Download PDFInfo
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- CN213578920U CN213578920U CN202022151631.7U CN202022151631U CN213578920U CN 213578920 U CN213578920 U CN 213578920U CN 202022151631 U CN202022151631 U CN 202022151631U CN 213578920 U CN213578920 U CN 213578920U
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Abstract
The utility model relates to a radiation heat transfer device with sub near field interval. A radiation heat exchange device with sub-near-field intervals comprises a first metal radiation plate and a second metal radiation plate; the first metal radiation plate is provided with a first radiation heat exchange area on the plate surface close to the second metal radiation plate; the second metal radiation plate corresponds to the first radiation heat exchange area of the first metal radiation plate and is provided with a sub-near-field interval, and the minimum interval between the second metal radiation plate and the first radiation heat exchange area is 1-3 mm; the first radiation heat exchange area of the first metal radiation plate is used for performing radiation heat exchange with the second metal radiation plate. The utility model discloses a radiation heat transfer device with sub near field interval through the design of sub near field thermal radiation, both can refrigerate the use, also can heat the use, especially can refrigerate and do not dewfall in the environment of more damp and hot to higher refrigerating capacity has.
Description
Technical Field
The utility model relates to a radiation heat transfer field especially relates to a radiation heat transfer device with sub-near field interval.
Background
The metal radiation heat exchange plate in the prior art roughly comprises the following components:
the heat exchange copper pipe is in direct contact with the metal radiation heat transfer plate, and the heat exchange copper pipe is connected with the metal radiation plate in a heat conduction mode. This mode is mostly used in air conditioning applications. The heat exchange copper pipe in northern Europe uses cold water with the temperature of 12 ℃, the surface temperature of the metal radiation plate is 20 ℃, but the surface temperature of the metal radiation plate is 14 ℃ of cold lines, which is still available in northern Europe most of the time. However, in a relatively hot and humid environment, the temperature of 14 ℃ is already lower than the dew point temperature, and the metal radiation plate can be subjected to dewing. In order to avoid condensation, 16 ℃ cold water is adopted, the temperature of the contact part of the metal radiation plate surface and the heat exchange copper pipe is only 18 ℃, the temperature of the plate surface without contact is raised to 24 ℃, and the refrigerating capacity of the metal radiation plate is very low, so when the metal radiation plate is used in an air-conditioning occasion in a region with large heat and humidity load, the high-temperature water metal radiation plate can only be used for supplementing a common air conditioner.
Other improved metal radiation plate structure, in order to solve the cold uniformity of the metal radiation plate surface, the TROX presses the heat exchange copper pipe into one
The metal base of cell type then bonds on the metal sheet with heat conduction glue with the metal base, but when the heat supply operating mode, heat conduction glue has lost the unable heat conduction of stickness through toasting. The TROX specification states "no heat supply".
And the heat exchange copper pipe is buried in the graphite material, and the graphite block is fixed on the metal plate by using heat conduction glue. However, when all the metal radiation plate products are in a refrigeration working condition, the temperature of the heat exchange refrigerant cannot be lower than the dew point temperature of air due to surface condensation.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a radiation heat transfer device with sub near field interval through the design of sub near field thermal radiation, both can refrigerate the use, also can heat the use, especially can refrigerate and do not dewfall in the environment of damp and hot to higher refrigerating capacity has.
The utility model provides a technical scheme that its technical problem adopted is: a radiation heat exchange device with sub-near-field intervals comprises a first metal radiation plate and a second metal radiation plate; the first metal radiation plate is provided with a first radiation heat exchange area on the plate surface close to the second metal radiation plate; the second metal radiation plate corresponds to the first radiation heat exchange area of the first metal radiation plate and is provided with a sub-near-field interval, and the minimum interval of the interval between the second metal radiation plate and the first radiation heat exchange area is 1-3 mm; the first radiation heat exchange area of the first metal radiation plate is used for carrying out radiation heat exchange with the second metal radiation plate; the surface of the first metal radiation plate, which is far away from the second metal radiation plate, is used for exchanging heat with the environment to be temperature-regulated; the second metal radiation plate is used for exchanging heat with refrigeration and/or heating equipment at the plate surface far away from the first metal radiation plate.
The second metal radiation plate is parallel to the first radiation heat exchange area of the first metal radiation plate; the interval is formed by an isolation net arranged between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate, a framework of the isolation net is used for providing an isolation support function, and meshes of the isolation net are used for providing a radiation heat exchange space; the thickness of the isolation net is 1-3mm, and the minimum distance between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate is 1-3 mm.
The thickness of the isolation net is 2mm, and the minimum distance between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate is 2 mm.
The radiation heat exchange device also comprises a heat transfer channel, and a heat transfer medium is arranged in the heat transfer channel; the second metal radiation plate is contacted with the heat transfer channel and jointly forms a heat exchange core plate; and the second metal radiation plate and the heat transfer channel are used for heat conduction and heat exchange, and exchange heat with refrigeration and/or heating equipment through a heat transfer medium.
The heat exchange core plate is provided with a heat radiation enhancement coating on the surface close to the first metal radiation plate and the surface of the first radiation heat exchange area.
The heat transfer channel is a heat transfer coil; the second metal radiation plate is provided with a first groove corresponding to the heat transfer coil in a pressing mode, and the heat transfer coil is placed in the first groove of the second metal radiation plate and is in close contact with the inner wall of the first groove.
A pressing strip is correspondingly arranged on the first groove of the second metal radiation plate; the pressing strip is also provided with a second groove corresponding to the first groove; the first groove and the second groove jointly form an accommodating channel of the heat transfer coil; the pressing bar is used for enabling the outer wall of the heat transfer coil to be in close contact with the inner wall of the groove of the second metal radiation plate, and is also used for heat transfer between the second metal radiation plate and the outer wall of the heat transfer coil.
The radiation heat exchange device also comprises a heat insulator; the heat insulator covers the outer sides of the second metal radiation plate and the first radiation heat exchange area, and is connected with the first metal radiation plate to form a heat insulation sealing cavity for preventing water vapor from entering a cavity between the second metal radiation plate and the first metal radiation plate to form internal condensation.
The radiation heat exchange device also comprises an outer cover; the outer cover is covered on the outer side of the heat insulator and is also connected with the first metal radiation plate to form a sealed cavity, and the outer cover is used for protecting the heat insulator from being damaged by external force and reflecting the energy of external heat radiation through a mirror surface on the outer surface; the housing also isolates heat transfer between the housing and the second metal radiant panel by insulation.
Two ends of the heat transfer coil respectively penetrate through the heat insulator and the outer cover and then are exposed outside the radiation heat exchange device; the outer cover is provided with a through hole at the position where the heat transfer coil penetrates out; and a sealing ring sleeved on the heat transfer coil is also arranged in the through hole.
The utility model has the advantages that: the utility model discloses a radiation heat transfer device with sub-near field interval not only can refrigerate the use, but also can heat the use, especially can refrigerate in the environment of damp and hot and do not dewfall, and have higher refrigerating capacity; the interval with the minimum distance of 1-3mm is arranged between the first metal radiation plate and the second metal radiation plate to form sub-near-field heat radiation, so that on one hand, the phenomenon that the distance between the two plates is too close to cause the formation of obvious cold temperature lines during refrigeration to cause the plate surface to be easy to dewed is avoided; on the other hand, the sub-near field radiation greatly improves the radiation heat exchange efficiency of the first metal radiation plate and the second metal radiation plate at the heat transfer coil pipe, so that the heat radiation of the two plates is more uniform, the temperature uniformity of the outer surface (the surface contacting with the environment to be temperature-regulated) of the first metal radiation plate is improved, the appearance of obvious cold and hot lines can be further avoided during refrigeration, and due to the fact that the influence of the cold and hot lines is avoided, a heat transfer medium with lower temperature can be adopted for refrigeration without condensation; the heat radiation enhancement coating is arranged on the corresponding plate surfaces of the first metal radiation plate and the second metal radiation plate, so that the radiation heat exchange efficiency between the first metal radiation plate and the second metal radiation plate and the uniformity of the plate surface temperature are further improved; the heat transfer coil pipe is tightly contacted with the heat transfer coil pipe to the maximum extent through the design that the pressing bar and the second radiation metal plate are wrapped on the heat transfer coil pipe, so that the heat exchange efficiency of the second radiation metal plate and the heat transfer coil pipe is ensured; the design of the heat insulator can isolate external water vapor and heat, avoid the influence of external environment on the radiation heat transfer between the first metal radiation plate and the heat exchange core plate and avoid the internal condensation between the first metal radiation plate and the heat exchange core plate; the design of the outer cover can protect the heat insulator from being damaged by external force, and can further seal the heat insulator; the radiation heat exchange device can be used as a heat exchange unit for regulating the temperature of indoor or outdoor environments of residential buildings and public buildings, and can be specifically designed into a wallboard, a ceiling and the like; the heat exchanger can also be used as a heat exchanger of a communication base station, server equipment and a machine room, and can also be used in other relatively low-temperature heat exchange occasions.
Drawings
FIG. 1 is a schematic view of a radiant heat exchange device with sub-near field spacing according to a first embodiment;
FIG. 2 is a schematic illustration of an explosive state of a radiant heat exchange device with sub-near field spacing according to the first embodiment;
FIG. 3 is a schematic diagram of the internal structure of a radiant heat exchange device with sub-near-field spacing according to the first embodiment;
fig. 4 is a schematic view of the first radiation metal plate and the heat exchange core plate of the radiation heat exchange device with sub-near-field spacing according to the first embodiment.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Example one
As shown in fig. 1 to 4, the present embodiment provides a radiation heat exchange device with a sub-near-field interval, which includes a first metal radiation plate 100, a second metal radiation plate 400; the first metal radiation plate 400 is provided with a first radiation heat exchange area on the surface close to the second metal radiation plate; the second metal radiation plate 400 corresponds to the first radiation heat exchange region of the first metal radiation plate 100 and has a sub-near-field interval, and the minimum interval between the second metal radiation plate and the first radiation heat exchange region is 2 mm; the first radiation heat exchange area of the first metal radiation plate 100 and the second metal radiation plate 400 are used for performing radiation heat exchange; the surface of the first metal radiation plate 100 far away from the second metal radiation plate 400 is used for exchanging heat with the environment to be temperature-regulated; the second metal radiation plate 400 is used for exchanging heat with the refrigeration and/or heating equipment at the plate surface far away from the first metal radiation plate 100.
In the radiation heat exchange device with sub-near-field interval of the present embodiment, the second metal radiation plate 400 is parallel to the first radiation heat exchange area of the first metal radiation plate 100; the space is formed by an isolation net 300 arranged between the second metal radiation plate 400 and the first radiation heat exchange area of the first metal radiation plate 100, the framework of the isolation net 300 is used for providing an isolation support function, and the meshes of the isolation net are used for providing a radiation heat exchange space; the thickness of the isolation net 300 is 2mm, and the minimum distance between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate is 2 mm.
In the radiation heat exchange device with the sub-near-field interval of this embodiment, the radiation heat exchange device further includes a heat transfer channel 500, in which a heat transfer medium is disposed; the second metal radiation plate 400 is in contact with the heat transfer channel 500 and forms a heat exchange core plate together; the second metal radiation plate 400 and the heat transfer channel are used for heat conduction and heat exchange, and exchange heat with a refrigeration and/or heating device through a heat transfer medium.
In the radiant heat exchanger with sub-near-field interval of this embodiment, the heat exchange core plate is provided with the enhanced thermal radiation coating 200 on the surface close to the first metal radiant plate 100 and the surface of the first radiant heat exchange zone; the enhanced thermal radiation coating 200 serves to further increase the efficiency of the radiant heat exchange of the heat exchange core plate with the first radiant heat exchange zone.
In a radiant heat exchanger with sub-near field spacing of the present embodiment, the heat transfer channel 500 is a heat transfer coil; a first groove corresponding to the heat transfer coil is pressed on the second metal radiation plate 400, and the heat transfer coil is placed in the first groove of the second metal radiation plate 400 and is in close contact with the inner wall of the first groove; a pressing strip 800 is correspondingly arranged on the first groove of the second metal radiation plate 400; the bead 800 also has a second groove corresponding to the first groove; the first groove and the second groove jointly form an accommodating channel of the heat transfer coil; the bead 800 serves to bring the outer wall of the heat transfer coil into close contact with the inner wall of the groove of the second metal radiation plate 400, and also serves to transfer heat between the second metal radiation plate 400 and the outer wall of the heat transfer coil.
In a radiant heat exchanger with sub-near field spacing of this embodiment, the radiant heat exchanger further comprises a thermal insulator 600; the heat insulator 600 covers the outer sides of the second metal radiation plate 400 and the first radiation heat exchange area, and the heat insulator 600 is connected with the first metal radiation plate 100 to form a heat insulation sealed cavity for preventing water vapor from entering a cavity between the second metal radiation plate 400 and the first metal radiation plate 100 to form internal condensation; the radiant heat exchange unit further comprises a housing 700; the outer cover 700 covers the outer side of the heat insulator 600, the outer cover 700 is also connected with the first metal radiation plate 100 to form a sealed cavity, and the outer cover 700 is used for protecting the heat insulator 600 from being damaged by external force and reflecting the energy of external heat radiation through the mirror surface of the outer surface; the outer cover 700 also insulates heat transfer between the outer cover 700 and the second metal radiant panel 400 by the heat insulator 600.
In the radiant heat exchanger with sub-near-field intervals of this embodiment, two ends of the heat transfer coil respectively penetrate through the thermal insulator 600 and the outer cover 700 and then are exposed outside the radiant heat exchanger; the outer cover 700 is provided with a through hole 702 at the position where the heat transfer coil penetrates out; a sealing ring 701 sleeved on the heat transfer coil is further arranged in the through hole 702 and used for sealing the position where the heat transfer coil penetrates out of the outer cover to form sealing.
In the radiation heat exchange device with the sub-near-field interval of the embodiment, the first metal radiation plate and the second metal radiation plate are preferably aluminum plates, and the aluminum plates have the advantages of light weight, easiness in processing and low cost; of course, other metal plates can be used for processing.
In the radiation heat exchange device with the sub-near-field interval, the heat transfer channel is generally a copper tube, and can also be a heat conduction pipeline made of other materials; the heat on the surface of the heat exchange core plate is taken away by the medium flowing in the pipeline, and the heat transfer medium can be various cooling/heating media, and is not limited in detail here.
In a radiation heat exchange device with a sub-near-field interval of the present embodiment, a space is provided between the second metal radiation plate 400 and the first radiation heat exchange region of the first metal radiation plate 100, and a minimum distance of 1-3mm is defined, and preferably 2 mm; this is because: when the distance between two surfaces generating infrared radiation is very close, very strong thermal radiation can also be generated, which is called near-field radiation; specifically, in the radiant heat exchange device, when the distance between the second metal radiant plate and the first radiant heat exchange area of the first radiant metal plate is too close, through near-field radiation, the low-temperature line of the heat transfer coil during refrigeration is projected onto the first radiant metal plate to form a relatively obvious cold-temperature line, at this time, the plate surface of the first radiant metal plate is prone to dewing at the corresponding position, and when the distance between the heat exchange core plate and the first radiant metal plate is controlled to be 1-3mm, especially 2mm, the heat radiation heat exchange capacity of the heat exchange core plate and the first radiant metal plate is the strongest, and when refrigeration is performed, the first radiant metal plate does not have an obvious low-temperature cold line, which is called as a sub-near-field interval, so that the radiant heat exchange efficiency of the radiant heat exchange device of the embodiment can be improved to the greatest extent.
In the radiant heat exchange device with the sub-near-field interval of the embodiment, in order to ensure that the sub-near-field interval arranged between the heat exchange core plate and the first radiant heat exchange region of the first metal radiant plate 100 can reach a specific interval, the isolation net is clamped between the heat exchange core plate and the first metal radiant plate, the isolation net is of a net structure made of a material with a low heat conductivity coefficient, a framework of the net structure is used for providing an isolation supporting function, meshes are used for providing a space for radiant heat exchange, and for a better effect, on the premise of ensuring the support, the meshes are larger.
In the radiation heat exchange device with the sub-near-field interval of the embodiment, the second metal radiation plate is in contact with the heat transfer channel, and the contact mode is only required to be capable of conducting heat, and certainly, the larger contact area can improve the efficiency of heat conduction; in the embodiment, a contact mode of the second metal radiation plate and the heat transfer channel is provided, specifically, a contact mode of the second metal radiation plate and the heat transfer coil is provided, the heat transfer coil is an S-shaped coil and is provided with a plurality of straight pipe portions arranged in parallel and bent pipe portions connected with the straight pipe portions, and the second metal radiation plate is provided with first grooves corresponding to the straight pipe portions; placing a straight pipe part of the heat transfer coil pipe in a first groove of a second metal radiation plate, arranging a pressing strip on the upper side of the straight pipe part, arranging a second groove corresponding to the straight pipe part on the pressing strip, and wrapping the pressing strip outside the straight pipe part through the second groove and the first groove of the second metal radiation plate in a matched manner; generally, the first groove and the second groove are both similar to a semicircle, and two ends of the semicircle are in fillet transition with the plane of the second metal radiation plate or the pressing strip, so that the processing is convenient; the pressing strip and the first metal radiation plate can be fixed together through compression joint, bonding, welding or other processing modes, and can be in close contact with the heat conduction coil pipe through the design mode, so that the heat conduction contact area with the heat conduction coil pipe can be increased, the heat conduction gap between the pressing strip and the first metal radiation plate and the heat conduction coil pipe can be reduced, and the heat conduction efficiency with the heat conduction coil pipe is improved to the maximum extent; furthermore, the whole heat transfer of the heat exchange core plate is more uniform, the influence of the straight pipe part of the heat transfer coil pipe on the heat transfer uniformity is reduced, the problem of a low-temperature line is solved from the other aspect, the temperature of a heat transfer medium in the heat transfer coil pipe can be further reduced during refrigeration, the phenomenon of condensation cannot occur, the temperature uniformity degree of the first radiation metal plate can be further improved due to the heat transfer uniformity, the first radiation metal plate is enabled to participate in temperature regulation of the environment integrally, and the heat exchange capacity of the radiation heat exchange device can be greatly improved.
In the radiation heat exchange device with the sub-near-field interval of the embodiment, the design of the outer cover 700 and the heat insulator 600 is further adopted, and the heat insulator covers the outer side of the heat exchange core plate and is hermetically connected with the first metal radiation plate 100, so that on one hand, the heat exchange efficiency can be effectively prevented from being influenced by the heat exchange between the heat exchange core plate and the external environment, and on the other hand, the water vapor of the external environment is prevented from entering to form internal condensation, so that the heat exchange efficiency is influenced; the outer cover is arranged on the outer side of the heat insulator and is also in sealing connection with the first metal radiation plate, so that the heat insulator inside is protected from being damaged by external force, and a second seal is formed; meanwhile, the outer surface of the outer cover is designed into a mirror surface, so that a white body function is provided, and the radiant heat of the external environment is reflected; in addition, through the design of the outer cover and the heat insulator, the heat exchange core plate can be firmly fixed, and the distance between the heat exchange core plate and the first metal radiation plate is further kept stable.
In the radiant heat exchange device with the sub-near-field interval, the heat transfer coil extends out to penetrate through the heat insulator and extend out of the outer cover, and a sealing ring is arranged between the outer cover and the heat transfer coil and used for ensuring that the heat exchange core plate is not influenced by the external environment; and, both ends of the heat transfer coil are also provided with joints 501, and the heat transfer coils of a plurality of radiation heat exchangers can be connected in series and/or in parallel through the joints 501 and then connected with a cooling/heating medium pipeline of a refrigeration or heating device.
In the radiation heat exchange device with the sub-near-field interval, during refrigeration, the first radiation metal plate absorbs external radiation heat and emits heat to the second radiation metal plate, the second radiation metal plate transfers the absorbed heat to the heat transfer coil fixed on the second radiation metal plate, and then the heat is taken away through the cold heat transfer medium in the heat transfer coil; when the heat supply, fix the heat conduction heating medium in the copper pipe on the second radiation metal sheet, give the second radiation metal sheet heat transfer through the conduction, the second radiation metal sheet of relative high temperature is to the first radiation metal sheet emission heat of relative microthermal, and other indoor surface emission heats are again given to the heat that first radiation metal sheet will absorb with thermal radiation's form, improve the temperature on each surface to reach the effect of indoor heat supply.
The effects of the examples are verified by the following tests.
A laboratory table for simulating indoor environment is designed, the laboratory table is a cube, the top surface of the inner wall of the laboratory table is a cold water radiation plate, the other five surfaces of the inner wall are hot water radiation plates, and the laboratory table is a hot water radiation plate for simulating the inner wall and the ground of the indoor environment.
The experimental method comprises the following steps: controlling and keeping the relative humidity of the indoor environment simulated in the laboratory bench at 60%, then starting the radiation plate of cold water at the top, adjusting and keeping the radiation plate at the top at a set temperature of 20 ℃, starting the radiation plates of hot water at the other five sides, and adjusting and keeping the radiation plates at the five sides at 26 ℃ (simulating the average radiation temperature of the indoor environment of the real room); meanwhile, detecting related parameters: cold water inlet/outlet temperature, cold water flow, hot water inlet/outlet temperature, hot water flow, cold plate heat absorption, and hot plate heat release.
The test was divided into three groups:
a: in the cold water radiation plate and the hot water radiation plate, the surfaces of the heat exchange core plate and the first radiation heat exchange area are not provided with a heat radiation enhancement coating; the minimum spacing between the heat exchange core plate and the first metal radiation plate is 10 mm;
b: in the cold water radiation plate and the hot water radiation plate, the surfaces of the heat exchange core plate and the first radiation heat exchange area are provided with heat radiation enhancement coatings; the minimum spacing between the heat exchange core plate and the first metal radiation plate is 10 mm;
c: in the cold water radiation plate and the hot water radiation plate, the surfaces of the heat exchange core plate and the first radiation heat exchange area are provided with heat radiation enhancement coatings; the minimum interval between the heat exchange core plate and the first metal radiation plate is 2 mm.
Three sets of tests were tested separately to obtain table 1.
TABLE 1 test A, B, C data
Through the data that table 1 obtained, compare experimental C and experimental B, can obviously reach, adopt 2 mm's sub near field distance can obviously improve radiation heat exchange efficiency, and compare experimental C and experimental A, can obviously reach, adopt reinforcing thermal radiation coating and adopt sub near field distance to promote radiation heat exchange efficiency by a wide margin, simultaneously, the lower surface of the first radiation metal sheet of the radiation board of the cold water of experimental C's top surface does not have the dewfall.
The radiation heat exchange device of the embodiment can be used as a heat exchange unit for regulating the temperature of indoor or outdoor environments of residential buildings and public buildings, and can be specifically designed into wallboards, ceilings and the like; the heat exchanger can also be used as a heat exchanger of a communication base station, server equipment and a machine room, and can also be used in other relatively low-temperature heat exchange occasions.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (10)
1. A radiant heat exchange device with sub-near field spacing, characterized by: comprises a first metal radiation plate and a second metal radiation plate; the first metal radiation plate is provided with a first radiation heat exchange area on the plate surface close to the second metal radiation plate; the second metal radiation plate corresponds to the first radiation heat exchange area of the first metal radiation plate and is provided with a sub-near-field interval, and the minimum interval of the interval between the second metal radiation plate and the first radiation heat exchange area is 1-3 mm; the first radiation heat exchange area of the first metal radiation plate is used for carrying out radiation heat exchange with the second metal radiation plate; the surface of the first metal radiation plate, which is far away from the second metal radiation plate, is used for exchanging heat with the environment to be temperature-regulated; the second metal radiation plate is used for exchanging heat with refrigeration and/or heating equipment at the plate surface far away from the first metal radiation plate.
2. The radiant heat exchange device with sub-near field spacing of claim 1, wherein: the second metal radiation plate is parallel to the first radiation heat exchange area of the first metal radiation plate; the interval is formed by an isolation net arranged between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate, a framework of the isolation net is used for providing an isolation support function, and meshes of the isolation net are used for providing a radiation heat exchange space; the thickness of the isolation net is 1-3mm, and the minimum distance between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate is 1-3 mm.
3. A radiant heat exchange unit with sub-near field spacing as claimed in claim 2 wherein: the thickness of the isolation net is 2mm, and the minimum distance between the second metal radiation plate and the first radiation heat exchange area of the first metal radiation plate is 2 mm.
4. A radiant heat exchange unit with sub-near field separation as claimed in any one of claims 1 to 3 wherein: the radiation heat exchange device also comprises a heat transfer channel, and a heat transfer medium is arranged in the heat transfer channel; the second metal radiation plate is contacted with the heat transfer channel and jointly forms a heat exchange core plate; and the second metal radiation plate and the heat transfer channel are used for heat conduction and heat exchange, and exchange heat with refrigeration and/or heating equipment through a heat transfer medium.
5. The radiant heat exchange device with sub-near field spacing of claim 4, wherein: the heat exchange core plate is provided with a heat radiation enhancement coating on the surface close to the first metal radiation plate and the surface of the first radiation heat exchange area.
6. The radiant heat exchange device with sub-near field spacing of claim 4, wherein: the heat transfer channel is a heat transfer coil; the second metal radiation plate is provided with a first groove corresponding to the heat transfer coil in a pressing mode, and the heat transfer coil is placed in the first groove of the second metal radiation plate and is in close contact with the inner wall of the first groove.
7. The radiant heat exchange device with sub-near field spacing of claim 6, wherein: a pressing strip is correspondingly arranged on the first groove of the second metal radiation plate; the pressing strip is also provided with a second groove corresponding to the first groove; the first groove and the second groove jointly form an accommodating channel of the heat transfer coil; the pressing bar is used for enabling the outer wall of the heat transfer coil to be in close contact with the inner wall of the groove of the second metal radiation plate, and is also used for heat transfer between the second metal radiation plate and the outer wall of the heat transfer coil.
8. A radiant heat exchange unit with sub-near field spacing as claimed in claim 6 or 7 wherein: the radiation heat exchange device also comprises a heat insulator; the heat insulator covers the outer sides of the second metal radiation plate and the first radiation heat exchange area, and is connected with the first metal radiation plate to form a heat insulation sealing cavity for preventing water vapor from entering a cavity between the second metal radiation plate and the first metal radiation plate to form internal condensation.
9. The radiant heat exchange unit with sub-near field spacing of claim 8, wherein: the radiation heat exchange device also comprises an outer cover; the outer cover is covered on the outer side of the heat insulator and is also connected with the first metal radiation plate to form a sealed cavity, and the outer cover is used for protecting the heat insulator from being damaged by external force and reflecting the energy of external heat radiation through a mirror surface on the outer surface; the housing also isolates heat transfer between the housing and the second metal radiant panel by insulation.
10. The radiant heat exchange unit with sub-near field spacing of claim 9, wherein: two ends of the heat transfer coil respectively penetrate through the heat insulator and the outer cover and then are exposed outside the radiation heat exchange device; the outer cover is provided with a through hole at the position where the heat transfer coil penetrates out; and a sealing ring sleeved on the heat transfer coil is also arranged in the through hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022151631.7U CN213578920U (en) | 2020-09-27 | 2020-09-27 | Radiation heat exchange device with sub-near-field interval |
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| CN202022151631.7U CN213578920U (en) | 2020-09-27 | 2020-09-27 | Radiation heat exchange device with sub-near-field interval |
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| CN213578920U true CN213578920U (en) | 2021-06-29 |
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