CN112944728A - Air source heat pump concave pit convex hull enhanced heat exchange condenser - Google Patents

Air source heat pump concave pit convex hull enhanced heat exchange condenser Download PDF

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Publication number
CN112944728A
CN112944728A CN202110191159.6A CN202110191159A CN112944728A CN 112944728 A CN112944728 A CN 112944728A CN 202110191159 A CN202110191159 A CN 202110191159A CN 112944728 A CN112944728 A CN 112944728A
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Prior art keywords
heat
pits
heat exchange
heat exchanger
tube
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Pending
Application number
CN202110191159.6A
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Chinese (zh)
Inventor
刘高文
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Shandong Zuoyao Intelligent Equipment Co ltd
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Shandong Zuoyao Intelligent Equipment Co ltd
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Priority to CN202110191159.6A priority Critical patent/CN112944728A/en
Publication of CN112944728A publication Critical patent/CN112944728A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00Heat pumps
    • F25B30/06Heat pumps characterised by the source of low potential heat
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/03Powdery paints
    • C09D5/033Powdery paints characterised by the additives
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses

Abstract

The invention discloses an air source heat pump concave pit convex hull enhanced heat exchange condenser which comprises a compressor, a throttling component and a heat exchanger, wherein the heat exchanger comprises a heat absorber and a heat radiator, the heat radiator is a tube shell or sleeve heat exchanger, the heat absorber is a tube fin type heat exchanger, the heat exchanger also comprises a heat exchange tube, a spherical concave pit is arranged on the outer surface of the heat exchange tube, and a spherical convex hull corresponding to the spherical concave pit is formed on the inner surface of the heat exchange tube. The spherical concave pits and the spherical convex hulls are arranged on the heat exchange tube, so that the convection heat exchange inside and outside the tube is obviously strengthened, the increase range of the flow resistance inside and outside the tube is small, the heat exchange area can be reduced under the condition of certain heat load, and the flow resistance is reduced.

Description

Air source heat pump concave pit convex hull enhanced heat exchange condenser
Technical Field
The invention belongs to the technical field of air source heat pumps, and particularly relates to a pit convex hull enhanced heat exchange condenser of an air source heat pump.
Background
An air source heat pump, also called an air source heat pump water heater, can absorb low-temperature heat in air, gasify a fluorine medium, then pressurize and heat up after being compressed by a compressor, and then convert the heat into water for heating through a heat exchanger, so that the water temperature is heated by the compressed high-temperature heat energy.
The heat exchange pipe is regarded as shell-and-tube type and double pipe heat exchanger's core heat transfer component at present, and the heat transfer and the flow resistance characteristic of heat exchange pipe play decisive role to the performance of whole heat exchanger, because the restriction in aspects such as technology, the engineering generally adopts smooth pipe as the heat exchange pipe of heat exchanger, and the heat transfer effect is poor, for this reason we propose an air source heat pump pit convex closure heat transfer condenser of reinforceing.
Disclosure of Invention
The invention aims to provide an air source heat pump concave pit convex hull reinforced heat exchange condenser to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an air source heat pump pit convex closure reinforces heat transfer condenser, includes compressor, throttle part and heat exchanger, the heat exchanger includes heat absorber and heat radiator, the heat radiator is tube or double-pipe heat exchanger, the heat absorber is tube fin heat exchanger, the heat exchanger still includes the heat exchange tube, the surface of heat exchange tube is provided with the sphere pit, the internal surface of heat exchange tube form with the corresponding sphere convex closure of sphere pit.
Preferably, the preparation of the heat exchanger comprises the following steps:
s1, taking a round heat exchange tube with a smooth surface;
s2, adopting tube expansion and hydraulic technology, processing spherical pits with specific radius R, diameter d, depth h, flow direction interval S1, transverse interval S2 and arrangement mode on the outer surface of the round heat exchange tube, and forming corresponding spherical convex hulls on the inner surface of the round heat exchange tube.
Preferably, the throttling component is one of a thermostatic expansion valve, an electronic expansion valve and a capillary tube, or a component formed by the thermostatic expansion valve and the electronic expansion valve together, or a component formed by the capillary tube, a one-way valve and an electromagnetic valve together.
Preferably, the arrangement of the spherical pits is as follows: a plurality of rows of pits which are uniformly distributed are processed in the direction vertical to the airflow direction, the sizes of all the pits are consistent, and the arrangement and the density of the pits are controlled by changing the flow direction spacing S1 between two adjacent rows of pits in the flow direction and changing the transverse spacing S2 between the centers of the circular impressions of two adjacent pits in each row.
Preferably, the two adjacent columns of pits are arranged in a cross manner, and the cross arrangement mode is as follows: and regarding the two adjacent columns of pits as a first column and a second column respectively, wherein the circle centers of the circular imprints of all pits in the second column are all on the vertical bisector of the connecting line between the circle centers of the circular imprints of the adjacent pits in the first column.
Preferably, the system further comprises an auxiliary heat exchanger, the auxiliary heat exchanger is a heat exchanger which directly provides heat energy for the refrigerant through an external heat source, and the external heat source is an electric heater, hot water, steam, solar heat energy collected by antifreeze, heat dissipation of a compressor motor, hot air or flue gas.
Preferably, the auxiliary heat exchanger is a heat exchanger which stores heat during a forward heating cycle and releases heat during a reverse defrosting cycle by using a heat storage medium, and the heat storage medium is water, antifreeze, heat transfer oil, transformer oil, an inorganic phase change material using caci 2.6H 2O or Na2SO 4.10H 2O as a raw material, or an organic phase change material using paraffin as a raw material.
Preferably, the preparation of the round heat exchange tube in the S1 comprises the following steps:
s101, cleaning: cleaning the working pipe with pure water;
s102, degreasing: spraying or soaking the working pipe with a degreasing agent, and cleaning to remove oil;
s103, secondary cleaning: cleaning the residual degreasing agent on the working pipe by using pure water;
s104, powder injection: and (3) after the working pipe is dried, spraying a powder coating on the surface of the metal by using porous corrosion-resistant powder coating, and solidifying and cooling.
Preferably, the preparation method of the porous corrosion-resistant powder coating comprises the following steps:
s201, uniformly mixing 40-90 parts of epoxy resin, 8-24 parts of heat conducting agent, 4-12 parts of curing agent and 0.2-0.6 part of electrization agent;
s202, melting and extruding the material, wherein the extrusion parameters are 80-90 ℃ in the first zone, 90-100 ℃ in the second zone and 40-50Hz in the screw rotation speed;
s203, cooling the extrudate, crushing the extrudate to obtain sheet materials, and mixing the sheet materials with 1-4 parts of baking soda;
s204, vertically grinding the mixture by using a coffee machine, and sieving the mixture by using a 200-mesh and 300-mesh sieve to obtain a porous corrosion-resistant powder coating product.
Preferably, the curing agent is m-xylylenediamine, the charging agent is a quaternary ammonium salt, and the heat conducting agent is heat conducting graphite powder.
Compared with the prior art, the invention has the beneficial effects that: the spherical concave pits and the spherical convex hulls are arranged on the heat exchange tube, so that the convection heat exchange inside and outside the tube is obviously strengthened, the increase range of the flow resistance inside and outside the tube is small, the heat exchange area can be reduced under the condition of certain heat load, and the flow resistance is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a heat exchange tube of the present invention;
fig. 2 is a schematic top view of the heat exchange tube of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Example 1
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an air source heat pump pit convex closure reinforces heat transfer condenser, includes compressor, throttle part and heat exchanger, the heat exchanger includes heat absorber and heat radiator, the heat radiator is tube or double-pipe heat exchanger, the heat absorber is tube fin heat exchanger, the heat exchanger still includes the heat exchange tube, the surface of heat exchange tube is provided with the sphere pit, the internal surface of heat exchange tube form with the corresponding sphere convex closure of sphere pit.
In this embodiment, preferably, the preparation of the heat exchanger includes the following steps:
s1, taking a round heat exchange tube with a smooth surface;
s2, adopting tube expansion and hydraulic technology, processing spherical pits with specific radius R, diameter d, depth h, flow direction interval S1, transverse interval S2 and arrangement mode on the outer surface of the round heat exchange tube, and forming corresponding spherical convex hulls on the inner surface of the round heat exchange tube.
In this embodiment, preferably, the throttling component is a component formed by a thermostatic expansion valve and an electronic expansion valve.
In this embodiment, preferably, the arrangement of the spherical pits is as follows: a plurality of rows of pits which are uniformly distributed are processed in the direction vertical to the airflow direction, the sizes of all the pits are consistent, and the arrangement and the density of the pits are controlled by changing the flow direction spacing S1 between two adjacent rows of pits in the flow direction and changing the transverse spacing S2 between the centers of the circular impressions of two adjacent pits in each row.
In this embodiment, preferably, the two adjacent columns of pits are arranged in a cross manner, and the cross arrangement mode is as follows: and regarding the two adjacent columns of pits as a first column and a second column respectively, wherein the circle centers of the circular imprints of all pits in the second column are all on the vertical bisector of the connecting line between the circle centers of the circular imprints of the adjacent pits in the first column.
In this embodiment, preferably, the heat exchanger further includes an auxiliary heat exchanger, the auxiliary heat exchanger is a heat exchanger that directly provides heat energy for the refrigerant through an external heat source, and the external heat source is an electric heater.
In order to increase the corrosion resistance of the round heat exchange tube and increase the service life of the round heat exchange tube, in this embodiment, preferably, the preparation of the round heat exchange tube in S1 includes the following steps:
s101, cleaning: cleaning the working pipe with pure water;
s102, degreasing: spraying or soaking the working pipe with a degreasing agent, and cleaning to remove oil;
s103, secondary cleaning: cleaning the residual degreasing agent on the working pipe by using pure water;
s104, powder injection: and (3) after the working pipe is dried, spraying a powder coating on the surface of the metal by using porous corrosion-resistant powder coating, and solidifying and cooling.
In order to increase the corrosion resistance of the round heat exchange tube and increase the service life of the round heat exchange tube, in this embodiment, preferably, the preparation method of the porous corrosion-resistant powder coating includes the following steps:
s201, uniformly mixing 40 parts of epoxy resin, 8 parts of heat conducting agent, 4 parts of curing agent and 0.2 part of electrifier;
s202, melting and extruding materials, wherein the extrusion parameters are 80 ℃ in a first area, 90 ℃ in a second area and 40Hz in screw rotation speed;
s203, cooling the extrudate, crushing the extrudate to obtain sheet materials, and mixing the sheet materials with 1 part of baking soda;
s204, vertically grinding the mixture by using a coffee machine, and sieving the mixture by using a 200-mesh sieve to obtain a porous corrosion-resistant powder coating product.
In this embodiment, preferably, the curing agent is m-xylylenediamine, the charging agent is a quaternary ammonium salt, and the heat conducting agent is heat conducting graphite powder.
Example 2
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an air source heat pump pit convex closure reinforces heat transfer condenser, includes compressor, throttle part and heat exchanger, the heat exchanger includes heat absorber and heat radiator, the heat radiator is tube or double-pipe heat exchanger, the heat absorber is tube fin heat exchanger, the heat exchanger still includes the heat exchange tube, the surface of heat exchange tube is provided with the sphere pit, the internal surface of heat exchange tube form with the corresponding sphere convex closure of sphere pit.
In this embodiment, preferably, the preparation of the heat exchanger includes the following steps:
s1, taking a round heat exchange tube with a smooth surface;
s2, adopting tube expansion and hydraulic technology, processing spherical pits with specific radius R, diameter d, depth h, flow direction interval S1, transverse interval S2 and arrangement mode on the outer surface of the round heat exchange tube, and forming corresponding spherical convex hulls on the inner surface of the round heat exchange tube.
In this embodiment, preferably, the throttling component is a component formed by a capillary tube, a one-way valve and an electromagnetic valve.
In this embodiment, preferably, the arrangement of the spherical pits is as follows: a plurality of rows of pits which are uniformly distributed are processed in the direction vertical to the airflow direction, the sizes of all the pits are consistent, and the arrangement and the density of the pits are controlled by changing the flow direction spacing S1 between two adjacent rows of pits in the flow direction and changing the transverse spacing S2 between the centers of the circular impressions of two adjacent pits in each row.
In this embodiment, preferably, the two adjacent columns of pits are arranged in a cross manner, and the cross arrangement mode is as follows: and regarding the two adjacent columns of pits as a first column and a second column respectively, wherein the circle centers of the circular imprints of all pits in the second column are all on the vertical bisector of the connecting line between the circle centers of the circular imprints of the adjacent pits in the first column.
In this embodiment, preferably, the system further includes an auxiliary heat exchanger, where the auxiliary heat exchanger is a heat exchanger that directly provides heat energy for the refrigerant through an external heat source, and the external heat source is solar heat energy collected by the antifreeze solution.
In this embodiment, preferably, the preparation of the round heat exchange tube in S1 includes the following steps:
s101, cleaning: cleaning the working pipe with pure water;
s102, degreasing: spraying or soaking the working pipe with a degreasing agent, and cleaning to remove oil;
s103, secondary cleaning: cleaning the residual degreasing agent on the working pipe by using pure water;
s104, powder injection: and (3) after the working pipe is dried, spraying a powder coating on the surface of the metal by using porous corrosion-resistant powder coating, and solidifying and cooling.
In this embodiment, preferably, the preparation method of the porous corrosion-resistant powder coating includes the following steps:
s201, uniformly mixing 90 parts of epoxy resin, 24 parts of heat conducting agent, 12 parts of curing agent and 0.6 part of electrization agent;
s202, melting and extruding materials, wherein the extrusion parameters are 90 ℃ in a first area, 100 ℃ in a second area and 50Hz in screw rotation speed;
s203, cooling the extrudate, crushing the extrudate to obtain sheet materials, and mixing the sheet materials with 4 parts of baking soda;
s204, vertically grinding the mixture by using a coffee machine, and sieving the mixture by using a 300-mesh sieve to obtain a porous corrosion-resistant powder coating product.
In this embodiment, preferably, the curing agent is m-xylylenediamine, the charging agent is a quaternary ammonium salt, and the heat conducting agent is heat conducting graphite powder.
Example 3
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides an air source heat pump pit convex closure reinforces heat transfer condenser, includes compressor, throttle part and heat exchanger, the heat exchanger includes heat absorber and heat radiator, the heat radiator is tube or double-pipe heat exchanger, the heat absorber is tube fin heat exchanger, the heat exchanger still includes the heat exchange tube, the surface of heat exchange tube is provided with the sphere pit, the internal surface of heat exchange tube form with the corresponding sphere convex closure of sphere pit.
In this embodiment, preferably, the preparation of the heat exchanger includes the following steps:
s1, taking a round heat exchange tube with a smooth surface;
s2, adopting tube expansion and hydraulic technology, processing spherical pits with specific radius R, diameter d, depth h, flow direction interval S1, transverse interval S2 and arrangement mode on the outer surface of the round heat exchange tube, and forming corresponding spherical convex hulls on the inner surface of the round heat exchange tube.
In this embodiment, preferably, the throttling component is a thermal expansion valve.
In this embodiment, preferably, the arrangement of the spherical pits is as follows: a plurality of rows of pits which are uniformly distributed are processed in the direction vertical to the airflow direction, the sizes of all the pits are consistent, and the arrangement and the density of the pits are controlled by changing the flow direction spacing S1 between two adjacent rows of pits in the flow direction and changing the transverse spacing S2 between the centers of the circular impressions of two adjacent pits in each row.
In this embodiment, preferably, the two adjacent columns of pits are arranged in a cross manner, and the cross arrangement mode is as follows: and regarding the two adjacent columns of pits as a first column and a second column respectively, wherein the circle centers of the circular imprints of all pits in the second column are all on the vertical bisector of the connecting line between the circle centers of the circular imprints of the adjacent pits in the first column.
In this embodiment, preferably, the heat exchanger further includes an auxiliary heat exchanger, the auxiliary heat exchanger is a heat exchanger that directly provides heat energy for the refrigerant through an external heat source, and the external heat source dissipates heat for the compressor motor.
In this embodiment, preferably, the preparation of the round heat exchange tube in S1 includes the following steps:
s101, cleaning: cleaning the working pipe with pure water;
s102, degreasing: spraying or soaking the working pipe with a degreasing agent, and cleaning to remove oil;
s103, secondary cleaning: cleaning the residual degreasing agent on the working pipe by using pure water;
s104, powder injection: and (3) after the working pipe is dried, spraying a powder coating on the surface of the metal by using porous corrosion-resistant powder coating, and solidifying and cooling.
In this embodiment, preferably, the preparation method of the porous corrosion-resistant powder coating includes the following steps:
s201, uniformly mixing 55 parts of epoxy resin, 15 parts of heat conducting agent, 8 parts of curing agent and 0.4 part of electrization agent;
s202, melting and extruding materials, wherein the extrusion parameters are 85 ℃ in a first area, 95 ℃ in a second area and the rotating speed of a screw is 45 Hz;
s203, cooling the extrudate, crushing the extrudate to obtain sheet materials, and mixing the sheet materials with 3 parts of baking soda;
s204, vertically grinding the mixture by using a coffee machine, and screening the mixture by using a 250-mesh screen to obtain a porous corrosion-resistant powder coating product.
In this embodiment, preferably, the curing agent is m-xylylenediamine, the charging agent is a quaternary ammonium salt, and the heat conducting agent is heat conducting graphite powder.
The working principle of the invention is as follows: according to the invention, the spherical concave pits and the spherical convex hulls are arranged on the heat exchange tubes, so that the convection heat exchange inside and outside the tubes is obviously enhanced, and meanwhile, the increase range of the flow resistance inside and outside the tubes is small, so that the heat exchange area can be reduced under the condition of certain heat load, and the flow resistance is reduced;
the invention has the advantages that:
(1) the enhanced heat transfer effect is good, and the heat transfer of the spherical concave pit/spherical convex hull enhanced heat transfer wall surface is enhanced by 40-70% relative to the heat transfer of a smooth wall surface;
(2) the flow resistance is small, and compared with conventional reinforced heat exchange structures such as ribs and threads, the flow resistance of the spherical concave pits/spherical convex hulls can be reduced by 30-50% under the condition of generating the same reinforced heat exchange effect;
(3) the initial investment of equipment is small, the operating cost is low, and under the condition of the same heat load, the product greatly reduces the equipment cost by reducing the area of the heat exchanger by 40-70 percent; the running cost of the equipment is greatly reduced by reducing the power of a fan/pump of the heat exchanger by 20 to 40 percent;
(4) the equipment volume is small, and the equipment volume of the heat pump unit can be reduced by 10-20% due to the fact that the area of the heat exchanger is greatly reduced under the same heat load condition.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides an air source heat pump pit convex closure reinforces heat transfer condenser which characterized in that: including compressor, throttling component and heat exchanger, the heat exchanger includes heat absorber and heat radiator, the heat radiator is tube or double-pipe heat exchanger, the heat absorber is tube fin heat exchanger, the heat exchanger still includes the heat exchange tube, the surface of heat exchange tube is provided with the sphere pit, the internal surface of heat exchange tube form with the corresponding sphere convex closure of sphere pit.
2. The condenser of claim 1, wherein: the preparation of the heat exchanger comprises the following steps:
s1, taking a round heat exchange tube with a smooth surface;
s2, adopting tube expansion and hydraulic technology, processing spherical pits with specific radius R, diameter d, depth h, flow direction interval S1, transverse interval S2 and arrangement mode on the outer surface of the round heat exchange tube, and forming corresponding spherical convex hulls on the inner surface of the round heat exchange tube.
3. The condenser of claim 1, wherein: the throttling part is one of a thermostatic expansion valve, an electronic expansion valve and a capillary tube, or a part formed by the thermostatic expansion valve and the electronic expansion valve together, or a part formed by the capillary tube, a one-way valve and an electromagnetic valve together.
4. The condenser of claim 2, wherein: the arrangement mode of the spherical pits is as follows: a plurality of rows of pits which are uniformly distributed are processed in the direction vertical to the airflow direction, the sizes of all the pits are consistent, and the arrangement and the density of the pits are controlled by changing the flow direction spacing S1 between two adjacent rows of pits in the flow direction and changing the transverse spacing S2 between the centers of the circular impressions of two adjacent pits in each row.
5. The condenser of claim 4, wherein the air source heat pump comprises a concave pit and a convex hull for heat exchange enhancement, and the condenser is characterized in that: two adjacent rows of pits are in cross arrangement, and the mode of the cross arrangement is as follows: and regarding the two adjacent columns of pits as a first column and a second column respectively, wherein the circle centers of the circular imprints of all pits in the second column are all on the vertical bisector of the connecting line between the circle centers of the circular imprints of the adjacent pits in the first column.
6. The condenser of claim 1, wherein: the heat exchanger is a heat exchanger which directly provides heat energy for the refrigerant through an external heat source, and the external heat source is solar heat energy collected by an electric heater, hot water, steam and antifreeze, heat dissipation of a compressor motor, hot air or flue gas.
7. The condenser of claim 6, wherein: the auxiliary heat exchanger is a heat exchanger which stores heat during a forward heating cycle and releases heat during a reverse defrosting cycle through a heat storage medium, and the heat storage medium is water, antifreeze, heat conduction oil, transformer oil, an inorganic phase change substance which takes CaCl2 & 6H2O or Na2SO4 & 10H2O as a raw material or an organic phase change substance which takes paraffin as a raw material.
8. The condenser of claim 2, wherein: the preparation of the round heat exchange tube in the S1 comprises the following steps:
s101, cleaning: cleaning the working pipe with pure water;
s102, degreasing: spraying or soaking the working pipe with a degreasing agent, and cleaning to remove oil;
s103, secondary cleaning: cleaning the residual degreasing agent on the working pipe by using pure water;
s104, powder injection: and (3) after the working pipe is dried, spraying a powder coating on the surface of the metal by using porous corrosion-resistant powder coating, and solidifying and cooling.
9. The condenser of claim 8, wherein: the preparation method of the porous corrosion-resistant powder coating comprises the following steps:
s201, uniformly mixing 40-90 parts of epoxy resin, 8-24 parts of heat conducting agent, 4-12 parts of curing agent and 0.2-0.6 part of electrization agent;
s202, melting and extruding the material, wherein the extrusion parameters are 80-90 ℃ in the first zone, 90-100 ℃ in the second zone and 40-50Hz in the screw rotation speed;
s203, cooling the extrudate, crushing the extrudate to obtain sheet materials, and mixing the sheet materials with 1-4 parts of baking soda;
s204, vertically grinding the mixture by using a coffee machine, and sieving the mixture by using a 200-mesh and 300-mesh sieve to obtain a porous corrosion-resistant powder coating product.
10. The condenser of claim 9, wherein: the curing agent is m-xylylenediamine, the energizer is quaternary ammonium salt, and the heat conducting agent is heat conducting graphite powder.
CN202110191159.6A 2021-02-19 2021-02-19 Air source heat pump concave pit convex hull enhanced heat exchange condenser Pending CN112944728A (en)

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Publication number Priority date Publication date Assignee Title
CN113446194A (en) * 2021-07-05 2021-09-28 江苏宝联气体有限公司 Air type aftercooler

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CN103644690A (en) * 2013-12-02 2014-03-19 陈志强 Air-source heat pump defrosting system
CN206540452U (en) * 2017-02-06 2017-10-03 四川川锅科泰达能源技术有限公司 A kind of spherical pit heat-transfer pipe
CN107655358A (en) * 2017-10-26 2018-02-02 浙江华彩新材料有限公司 A kind of corrosion-resistant heat exchange tube and preparation method thereof
CN108300159A (en) * 2017-10-25 2018-07-20 浙江星丰科技有限公司 A kind of preparation method of anticorrosion direct-buried thermal insulation pipe
CN210833201U (en) * 2019-09-19 2020-06-23 山东美陵化工设备股份有限公司 Spherical pit pipe heat exchanger with inserted spiral sheet

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