CN104019291A - Composite tube special for air conditioner and tube fitting of composite tube - Google Patents
Composite tube special for air conditioner and tube fitting of composite tube Download PDFInfo
- Publication number
- CN104019291A CN104019291A CN201410269617.3A CN201410269617A CN104019291A CN 104019291 A CN104019291 A CN 104019291A CN 201410269617 A CN201410269617 A CN 201410269617A CN 104019291 A CN104019291 A CN 104019291A
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- China
- Prior art keywords
- tube
- plastic
- pipe
- air
- pipe fitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
- F16L9/121—Rigid pipes of plastics with or without reinforcement with three layers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/26—Refrigerant piping
- F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention provides a composite tube special for an air conditioner and a tube fitting of the composite tube, and belongs to parts special for air conditioners. The composite tube is characterized by being formed by compounding a polytetrafluoroethylene plastic inner tube, an ordinary plastic outer protection layer and a foamed plastic heat insulation layer arranged between the inner tube and the outer protection layer. Male connectors for hot melting connection are designed at the two ends of the polytetrafluoroethylene plastic inner tube. The polytetrafluoroethylene plastic tube fitting matched with the composite tube special for the air conditioner is characterized by being composed of a polytetrafluoroethylene plastic tube fitting body, a female connector and a red copper tube body, wherein the female connector for being connected with the male connectors in a hot melting mode is designed at one end of the tube fitting body, and the red copper tube body is embedded into an inner cavity of the tube fitting body in an injection molding mode. At least two annular metal protrusions arranged at intervals and at least one metal positioning block located between the annular protrusions are designed on the periphery of the end, embedded into the tube fitting body, of the red copper tube body. After the trial, the requirements for the performance of the tube connected with the air conditioner are met, manufacturing cost is greatly reduced by 2/3, and the composite tube can completely replace an existing red copper tube for the air conditioner.
Description
Technical field: the invention belongs to air-conditioning special-purpose member, particularly a kind of air-conditioning specific complex pipe and pipe fitting thereof.
Background technique: existing indoor apparatus of air conditioner and outdoor unit connecting pipe are all copper tubes, reason is that copper pipe convection moves in ducted liquid coolant media, as fluorine Lyons, there are quite high corrosion-resistant, high temperature resistant 50 ℃ of above, the subzero 20 ℃ of following performances of low temperature resistant need that reach, and because indoor apparatus of air conditioner one connecting pipe one outdoor unit is a high-seal the system more than high pressure resistant 3MPa of reaching, idle call connecting pipe must be also high pressure resistant and the goodish pipeline of sealability, and copper tube has also exactly met such requirement.But along with the minimizing day by day of copper resource, the price of copper tube rises steadily, idle call copper tube price climbs up and up, and its cost is high.
As can be seen here, study and design and a kind ofly can meet air-conditioning connecting pipe performance requirement, and air-conditioning specific complex pipe and pipe fitting thereof that manufacture cost significantly reduces are again necessary.
Summary of the invention: the object of the invention is for the high problem of prior art air-conditioning connecting pipe manufacture cost, study and design and a kind ofly can meet air-conditioning connecting pipe performance requirement, and manufacture cost the air-conditioning specific complex pipe and the pipe fitting thereof that significantly reduce again.
The object of the present invention is achieved like this: a kind of air-conditioning specific complex pipe, is characterized in that forming by the expandable plastic insulating between polytetrafluoroethylplastic plastic inner tube, common plastics external protection and inner tube and external protection is compound.
Described polytetrafluoroethylplastic plastic inner tube two ends are designed with hot melting way and connect and use positive connecting head.
The material of described external protection is PVC＝polyvinyl chloride ,/or polypropylene outside ,/or polyethylene.
Anti-oxidant plastic additive and antiultraviolet plastic additive in the material of described external protection, have been added.
Described expandable plastic insulating is polyethylene feed back/or virgin material foaming layer ,/or polyphenyl alkene feed back/or virgin material foaming layer ,/or polypropylene feed back/or virgin material foaming layer.
A kind of polytetrafluoroethylplastic plastic pipe fitting that is matched with described air-conditioning specific complex pipe sun connecting head, it is characterized in that by polytetrafluoroethylplastic plastic pipe fitting body, described pipe fitting body one end is designed with for connect the cloudy connecting head of positive connecting head with hot melting way, and the copper tube body that described pipe fitting chamber body embeds with injection molding forms.
End, one end periphery of described copper tube body embedding pipe fitting body is designed with metal ring projection and at least 1 metal positioning block between annular projection at least 2 intervals.
The tube chamber of described cloudy connecting head communicates with end, one end inner chamber that copper tube body embeds pipe fitting body.
In using process, refrigerant is along air conditioning chamber's endosome------copper tube tube cavity---cloudy connecting head tube chamber------polytetrafluoroethylplastic plastic inner tube------copper tube tube cavity---copper tube connects copper tube body bared end of another pipe fitting that fastening piece the connects---running body outside air conditioning chamber that connects the cloudy connecting head tube chamber of all-in-one-piece through positive connecting head with hot melting way of the polytetrafluoroethylplastic plastic inner tube the other end that connects all-in-one-piece sun connecting head tube chamber through cloudy connecting head with hot melting way that connects the copper tube body bared end that fastening piece connects with copper tube; Vice versa.
Air-conditioning specific complex pipe and pipe fitting thereof that the invention process obtains, through on probation, compare and shown following beneficial effect with the idle call copper tube of prior art:
1, met air-conditioning connecting pipe performance requirement.
Teflon Polytetrafluoroethylene; PTFE; Ethylene tetrafluoro-polymer, molecular formula: [CF2CF2] n, relative density 2.1-2.3,327 ℃ of fusing points.There is the outstanding properties such as heat-resisting quantity, lower temperature resistance, chemical stability, electrical insulating property, resistance to weathering and lubricity, non-viscosity.The inner tube that the present invention adopts teflon to make, because it has good heat-resisting quantity, lower temperature resistance and chemical stability, what reached the idle call indoor set the same with prior art copper tube and outdoor unit connecting pipe completely corrosion-resistant, high temperature resistantly reaches 50 ℃ of above, subzero 20 ℃ of following performance requirements of low temperature resistant need.
The present invention with molding and forming be coated on copper pipe body and on metal ring projection and the pipe fitting that forms of the teflon inner tube end of metal positioning block periphery, the copper pipe body of combining closely with teflon inner tube in pipe fitting, played and while using, kept being connected between air-conditioning connecting pipe and indoor set or outdoor unit, still adopt the Placement the same with prior art copper tube, the performance requirement of the high-seal system that has met indoor apparatus of air conditioner more than the high pressure resistant 3MPa of reaching of--connecting pipe--outdoor unit composition.
Through practical probation, confirm: corrosion-resistant, high temperature resistantly reaching more than 50 ℃, low temperature resistant need are subzero below 20 ℃, and on the high pressure resistant performance requirements such as high-seal system that reach more than 3MPa, can substitute the idle call copper tube of prior art completely.
Because adopting, plastic composite pipe body of the present invention forms by the expandable plastic insulating between teflon inner tube, common plastics external protection and inner tube and external protection is compound, on the one hand, anti-oxidant plastic additive and antiultraviolet additive in the material of common plastics external protection, have been added again, the erosion and the sunlight middle-ultraviolet lamp that prevent oxygen and other corrosive gass in air irradiate cause aging, with this, have extended working life of the present invention; On the other hand; the design of the expandable plastic insulating between inner tube and external protection, be connected with the air-conditioning of prior art with copper tube only hover ground parcel expandable plastic pipe box compare, obviously improved heat insulation and preservation effect; directly play minimizing heat loss, reduced the effect of power consumption.
2, significantly reduced the manufacture cost of idle call connecting pipe.
As mentioned above, the teflon inner tube of relative density 2.1-2.3, is connected with copper tube and compares with the air-conditioning of prior art relative density 8.9, and material consumption amount has reduced nearly 3/4ths; In addition, the market price of red copper is about 60,000 yuan/ton, is that teflon is about 30,000 yuan/ton 2 times.Two compare, and air-conditioning connection of the present invention has declined 2/3 by composite pipe manufacture cost, has also also reduced the consumption in narrow resources copper village simultaneously.
Accompanying drawing explanation: Fig. 1 is the schematic diagram that meets thematic structure of the present invention, and Fig. 2 is the A in Fig. 1---A sectional view.
Embodiment: by reference to the accompanying drawings implementation detail of the present invention is described as follows:
As shown in Figure 1, 2, a kind of air-conditioning specific complex pipe, is characterized in that forming by the expandable plastic insulating 103 between polytetrafluoroethylplastic plastic inner tube 101, common plastics external protection 102 and inner tube and external protection is compound.
The internal diameter of teflon inner tube 101 equals the internal diameter of copper pipe body 2, and pipe thickness is greater than the pipe thickness of copper pipe body 2, conventionally selected in 2-4 millimeter; The thickness of expandable plastic insulating 103 is selected in 10-12 millimeter; The pipe thickness of common plastics external protection 102 is selected in 0.3-0.5 millimeter.
As shown in Figure 1, described polytetrafluoroethylplastic plastic inner tube 101 two ends are designed with hot melting way and connect with positive connecting head 1011.The external diameter of sun connecting head is half sum of polytetrafluoroethylplastic plastic inner tube diameter and polytetrafluoroethylplastic plastic inner pipe wall thickness, and length is at 15-20 millimeter.
As shown in Figure 1, 2, the material of described external protection 102 is PVC＝polyvinyl chloride ,/or polypropylene ,/or polyethylene.
As shown in Figure 1, 2, anti-oxidant plastic additive and antiultraviolet plastic additive in the material of described outer tube 102, have been added.
Anti-oxidant plastic additive is to make an addition on a small quantity the material that can delay or suppress oxidative degradation in plastics.By chemical structure, can be divided into five kinds of phenols, amine, phosphorous acid esters, sulfuric acid ester and other etc.Its mechanism of action is very complicated.Mainly contain and suppress free radicals growth; Decompose hydroperoxide, suppresses autocatalysis and some metal ions of chelating of superoxide, removes metal ion to the catalysis of oxidation etc.General types comprises hindered phenol compound, aromatic amine compounds, thio-ether type compounds, bi-ester of phosphite etc.
Antiultraviolet plastic additive can be divided into photomask agent, ultraviolet light absorber, quencher, radical scavenger by mechanism.By chemical structure, can be divided into: salicylate class, benzotriazole, group-substituted acrylonitrile, triazines etc.
It is the needs that reduce costs that external protection 102 adopts common plasticses, adds anti-oxidant plastic additive and be the erosion that prevents oxygen and other corrosive gass in air; Adding antiultraviolet additive is to prevent that sunlight middle-ultraviolet lamp from irradiating cause aging, extends working life of the present invention with this.
As shown in Figure 1, 2, described expandable plastic insulating 103 is polyethylene feed back/or virgin material foaming layers ,/or polyphenyl alkene feed back/or virgin material foaming layer ,/or polypropylene feed back/or virgin material foaming layer.The polyolefin esters such as the polyethylene that wherein expandable plastic insulating proposes in technical solution of the present invention, polyphenyl alkene, polypropylene, those of ordinary skill in the art's common-sense is known, according to manufacture method of the present invention, other polyolefin esters, rubber and plastic, nylon etc. all can be foamed into insulating through above-mentioned technique.The setting of expandable plastic insulating 103 is to guarantee scattering and disappearing of ducted refrigerant heat; expandable plastic insulating of the present invention and the external protection covering outward; the foamed plastics that is wrapped in idle call copper tube outside with existing separated type is compared, and heat preservation and insulation obviously improves.
As shown in Figure 1, 2, a kind of polytetrafluoroethylplastic plastic pipe fitting 3 that is matched with air-conditioning specific complex pipe sun connecting head 1011, it is characterized in that by polytetrafluoroethylplastic plastic pipe fitting body 301, described pipe fitting body one end is designed with for connect the cloudy connecting head 3011 of positive connecting head 1011 with hot melting way, and the copper tube body 2 that described pipe fitting chamber body embeds with injection molding forms.The length of idle call copper pipe body 2 need to select between 5-8 centimetre of SEALING FITTING when installing an air-conditioner wherein, external diameter and pipe thickness, according to the watt level of air-conditioning, are selected by current standard.Conventionally external diameter is 6,9,12,16,19 millimeters, and pipe thickness is 0.3-1.0 millimeter.
As shown in Figure 1, end, one end periphery that described copper tube body 2 embeds pipe fitting body 301 is designed with metal ring projection 201 and at least 1 metal positioning block 202 between annular projection at least 2 intervals.With the setting that welding manner is bound up on copper pipe body 2 end metal ring projections 201 be prevent between copper pipe body 2 and polytetrafluoroethylplastic plastic pipe fitting body 301 loosening along pipeline axial, the height of metal ring projection 201 normally copper pipe body 2 pipe thicknesses 3-5 doubly; The setting of metal positioning block 202 is to prevent that copper pipe body 2 and polytetrafluoroethylplastic plastic pipe fitting body 301 are radially loosening along pipeline, metal positioning block 202 height normally copper pipe body 2 pipe thicknesses 3-5 doubly.
As shown in Figure 1, the tube chamber of described cloudy connecting head 3011 communicates with end, one end inner chamber that copper tube body 2 embeds pipe fitting body 301.------copper tube tube cavity---cloudy connecting head tube chamber------polytetrafluoroethylplastic plastic inner tube------copper tube tube cavity---the copper tube body bared end that connects another pipe fitting that fastening piece connects with copper tube---the smooth and easy operation of air conditioning chamber's ectosome that connects the cloudy connecting head tube chamber of all-in-one-piece through positive connecting head with hot melting way of polytetrafluoroethylplastic plastic inner tube 101 the other ends that connects all-in-one-piece sun connecting head tube chamber through cloudy connecting head with hot melting way that connects the copper tube body bared end that fastening piece connects with copper tube that the technique effect of this design is to have guaranteed in using process that refrigerant is along air conditioning chamber's endosome.
The mode of execution that has only provided direct-type pipe fitting in accompanying drawing of the present invention, obviously comprises bending head type, or the concrete enforcement of other forms of connecting pipe part is self-evident for the ordinary skill in the art.
Below by reference to the accompanying drawings embodiments of the present invention have been made and having been illustrated; but the present invention is not limited to described mode of execution; obviously; for the ordinary skill in the art; without departing from the principles and spirit of the present invention, these mode of executions being carried out to multiple replacement, modification and modification all still falls within the full scope of protection of the present invention.
Claims (8)
1. an air-conditioning specific complex pipe, is characterized in that by the compound formation of expandable plastic insulating (103) between polytetrafluoroethylplastic plastic inner tube (101), common plastics external protection (102) and inner tube and external protection.
2. an air-conditioning specific complex pipe claimed in claim 1, is characterized in that described polytetrafluoroethylplastic plastic inner tube (101) two ends are designed with hot melting way to connect with positive connecting head (1011).
3. an air-conditioning specific complex pipe claimed in claim 1, is characterized in that the material of described external protection (102) is PVC＝polyvinyl chloride ,/or polypropylene ,/or polyethylene.
4. the air-conditioning specific complex pipe described in claim 1 or 2, is characterized in that having added anti-oxidant plastic additive and antiultraviolet plastic additive in the material of described external protection (102).
5. an air-conditioning specific complex pipe claimed in claim 1, is characterized in that described expandable plastic insulating (103) is polyethylene feed back/or virgin material foaming layer ,/or polyphenyl alkene feed back/or virgin material foaming layer ,/or polypropylene feed back/or virgin material foaming layer.
6. a polytetrafluoroethylplastic plastic pipe fitting (3) that is matched with air-conditioning specific complex pipe sun connecting head (1011) described in claim 1 or 2, it is characterized in that by polytetrafluoroethylplastic plastic pipe fitting body (301), described pipe fitting body one end is designed with for connect the cloudy connecting head (3011) of positive connecting head (1011) with hot melting way, and the copper tube body (2) that described pipe fitting chamber body embeds with injection molding forms.
7. a polytetrafluoroethylplastic plastic pipe fitting claimed in claim 6, end, one end periphery that described copper tube body (2) embeds pipe fitting body (301) is designed with metal ring projection (201) and at least 1 metal positioning block (202) between annular projection at least 2 intervals.
8. a polytetrafluoroethylplastic plastic pipe fitting claimed in claim 6, the tube chamber of described cloudy connecting head (3011) communicates with end, one end inner chamber that copper tube body (2) embeds pipe fitting body (301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269617.3A CN104019291A (en) | 2014-06-16 | 2014-06-16 | Composite tube special for air conditioner and tube fitting of composite tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269617.3A CN104019291A (en) | 2014-06-16 | 2014-06-16 | Composite tube special for air conditioner and tube fitting of composite tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104019291A true CN104019291A (en) | 2014-09-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410269617.3A Pending CN104019291A (en) | 2014-06-16 | 2014-06-16 | Composite tube special for air conditioner and tube fitting of composite tube |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504282A (en) * | 2017-09-30 | 2017-12-22 | 镇江市星耀智能装备有限公司 | A kind of high-efficiency insulated pipe |
| CN108548018A (en) * | 2018-04-30 | 2018-09-18 | 上海英泰塑胶股份有限公司 | Three step port high-pressure pipe member of continuous fiber reinforced thermoplastic concave |
| CN108692135A (en) * | 2018-06-14 | 2018-10-23 | 苏州逸新和电子有限公司 | A kind of thermal insulation casing of all standing |
| CN111022780A (en) * | 2019-12-31 | 2020-04-17 | 广东省第一建筑工程有限公司 | Construction method of thermal water supply system of PPR polyurethane foaming heat-preservation pipe |
| CN111496669A (en) * | 2020-04-20 | 2020-08-07 | 宁波赢伟泰科新材料有限公司 | Chemical mechanical polishing retaining ring and manufacturing method thereof |
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| CN201779368U (en) * | 2010-09-16 | 2011-03-30 | 广东美的电器股份有限公司 | Composite flexible pipe used in air conditioner |
| CN103075611A (en) * | 2013-01-18 | 2013-05-01 | 镇江华伟塑管有限公司 | High-performance low-cost composite heat insulation pipe |
| CN202946794U (en) * | 2012-11-19 | 2013-05-22 | 同济大学附属七一中学 | Abrasion-resistant pipe |
| CN203258273U (en) * | 2013-04-08 | 2013-10-30 | 宁波波尔管业开发有限公司 | Pipe fitting for solar device |
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- 2014-06-16 CN CN201410269617.3A patent/CN104019291A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5096231A (en) * | 1990-11-28 | 1992-03-17 | S&H Fabricating And Engineering Inc. | Flexible fluid conduit assembly |
| CN201377657Y (en) * | 2009-04-07 | 2010-01-06 | 苏建元 | Polyethylene foam thermal insulation water delivery pipe |
| CN201779368U (en) * | 2010-09-16 | 2011-03-30 | 广东美的电器股份有限公司 | Composite flexible pipe used in air conditioner |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504282A (en) * | 2017-09-30 | 2017-12-22 | 镇江市星耀智能装备有限公司 | A kind of high-efficiency insulated pipe |
| CN108548018A (en) * | 2018-04-30 | 2018-09-18 | 上海英泰塑胶股份有限公司 | Three step port high-pressure pipe member of continuous fiber reinforced thermoplastic concave |
| CN108692135A (en) * | 2018-06-14 | 2018-10-23 | 苏州逸新和电子有限公司 | A kind of thermal insulation casing of all standing |
| CN111022780A (en) * | 2019-12-31 | 2020-04-17 | 广东省第一建筑工程有限公司 | Construction method of thermal water supply system of PPR polyurethane foaming heat-preservation pipe |
| CN111496669A (en) * | 2020-04-20 | 2020-08-07 | 宁波赢伟泰科新材料有限公司 | Chemical mechanical polishing retaining ring and manufacturing method thereof |
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Application publication date: 20140903 |