CN101634285A - Wiring terminal for carbon dioxide refrigeration compressor - Google Patents
Wiring terminal for carbon dioxide refrigeration compressor Download PDFInfo
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- CN101634285A CN101634285A CN200910108231A CN200910108231A CN101634285A CN 101634285 A CN101634285 A CN 101634285A CN 200910108231 A CN200910108231 A CN 200910108231A CN 200910108231 A CN200910108231 A CN 200910108231A CN 101634285 A CN101634285 A CN 101634285A
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- carbon dioxide
- wiring terminal
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- refrigeration compressor
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Abstract
The invention relates to a component for a refrigeration compressor, in particular to a wiring terminal for a carbon dioxide refrigeration compressor, which comprises a cover body and a wiring post, wherein the wiring post is inserted in an inserting hole on the cover body; the cover body is made of carbon steel containing 0.1-0.18% of carbon; the production technology of the cover body includes a roughly forming procedure and a finely processing procedure; the wiring post is made of 446 stainless steel or 4j28 alloy; and the space between the wiring post and the inserting hole of the cover body is hermetically sintered by TCG-910S glass materials meeting the RoHs requirements. The wiring terminal can be widely used for supercritical carbon dioxide refrigeration compressors or two-stage compression type carbon dioxide compressors, not only can meet the using requirements of the wiring terminals of the carbon dioxide refrigeration compressors in the future, but also can achieve the purpose of low manufacturing cost, and further promotes the industrial production of the carbon dioxide refrigeration compressors to finally replace compressors using refrigerants harmful to the environment.
Description
Technical field
The present invention relates to a kind of refrigeration compressor parts, refer more particularly to a kind of tenminal block that is used for carbon dioxide refrigeration compressor.
Background technique
Along with the continuous development of science and technology, people use cooling systems such as refrigerator, air-conditioning more and more, can damage the ozone layer and cause global greenhouse effect thereby be present in refrigeration agent in these equipment in the past.Be the ozonosphere of preserving our planet, people change specialty into HFC with employed refrigeration agent ' freon ' in the compressor of air conditioner or refrigerating machine, but the alternative of freon such as HFC also be experimental results show that and can cause greenhouse effect.Therefore be to adopt carbon dioxide as refrigeration agent at present, the employing carbon dioxide will be very little as refrigeration agent depletion of the ozone layer degree, we can say that the load to environment is inappreciable, and can not have problems such as toxicity or combustibility.
Though carbon dioxide coolant has very outstanding effect aspect environmental protection, but compare with the refrigeration agent in past, because of the critical temperature of carbon dioxide has only subzero thirties degree, make its liquefaction, need very high pressure, therefore the compressor internal pressure has increased by 5 times, can reach 20-30Mpa, and ultimate pressure can reach 50MPa.The compressor metallic cavity can meet the demands by thickening, and traditional tenminal block can't bear so high pressure owing to adopt the low carbon steel plate of 1.0-2.0 millimeter thickness to be stamped to form.
As China Patent No. is ZL200520081914.1, and name is called structure described in ' hermetic motor compressor power supply terminal ', and it comprises pedestal and wiring terminal, and wiring terminal is plugged in the jack of pedestal.Sintering has insulator in the space of wiring terminal and jack inwall.Jack is positioned at the body of pedestal mounting bedplate, and the axial section of jack has reducing positions such as ladder section, waveform segment, has improved the combination force between Socket walls and insulator greatly, has the characteristics of solid durable, good reliability.General tenminal block making method has following two kinds of schemes at present, and first kind of scheme is: lid adopts 2.0mm low carbon steel to be stamped to form, through CO-CO
2Mixed gas protected sintering forms, and second kind of scheme is that lid adopts No. 15 carbon steel bars to form through machining, through CO-CO
2Mixed gas protected sintering forms.Two kinds of but above making methods all are both advantageous and disadvantageous, at first are that first kind of lid in the scheme is out of shape in air tightness test 15MPa hydraulic pressure but do not leak, and when compression resistance test 45Mpa hydraulic pressure the rupture and leakage phenomenon take place then, and manufacture cost is relatively low.The lid of second kind of scheme is qualified in air tightness test 15MPa hydraulic pressure, when compression resistance test 45Mpa hydraulic pressure the steel part decarburization takes place then, slight deformation, but do not leak, manufacture cost is relatively very high.In sum, do not leak though adopt the lid of first kind of scheme low carbon steel plate punching press can stand normal working pressure distortion, but under ultimate pressure, break, can't satisfy usage requirement; Though adopt second kind of scheme can satisfy usage requirement but cost is higher, the decarburization phenomenon makes part have potential defective.
Existing lid adopts two kinds of method manufacturings to form, and is the compressor terminal of HFC for refrigerant, and lid adopts and is stamped to form, the smear metal of No. 15 carbon steel bars of another kind of employing forms, the big and shape relative complex because of scrap rate, and operation is various, cause work efficiency very low, cost is very high.
The present CO-CO that adopts
2Sintering process, the equipment input is bigger, and because the existence of CO, safety problem will be can not ignore, and therefore safing supplementary equipment has high input, and has caused the raising of manufacture cost indirectly.In addition, thick again CO and CO
2High temperature active, can make metalwork produce decarburization, cause the decline of mechanical strength.
Based on the low deficiency of above-mentioned existing carbon dioxide refrigeration compressor tenminal block pressure-bearing, it is moderate and can bear " a kind of tenminal block that is used for carbon dioxide refrigeration compressor " of 50Mpa pressure that the inventor has designed cost.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art technical problem to be solved is: provide a kind of cost moderate and can bear the carbon dioxide refrigeration compressor tenminal block of 50Mpa pressure.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of tenminal block that is used for carbon dioxide refrigeration compressor, it comprises lid and wiring terminal, wiring terminal is plugged in the jack on the lid, described lid is that 0.1～0.18% carbon steel is made by adopting carbon content, the production technology of lid comprises thick molding procedure and two stages of finishing step, thick molding procedure is that the employing carbon content is 0.1～0.18% carbon steel formation crude green body, finishing step is to adopt lathe that crude green body is cut, so that crude green body reaches required dimensional accuracy and surface roughness;
Existing lid adopts two kinds of method manufacturings to form, and is the compressor terminal of HFC for refrigerant, and lid adopts and is stamped to form, the smear metal of No. 15 carbon steel bars of another kind of employing forms, the big and shape relative complex because of scrap rate, and operation is various, cause work efficiency very low, cost is very high.And adopt production technology of the present invention, by the crude green body method for finishing manufactured, crude green body adopts to forge and forms, and forms basic profile and three holes of lid, flange edge etc., only need during fine finishing the crude green body external diameter, three apertures are made smear metal to given size slightly and are got final product, and through verification experimental verification, adopt method processing lid of the present invention, efficient is to adopt 10 times of rod iron processing method at present, so the lid cost will obviously descend.
The present CO-CO that adopts
2Sintering process, the equipment input is bigger, and because the existence of CO, safety problem will be can not ignore, and therefore safing supplementary equipment has high input, and has caused the raising of manufacture cost indirectly.In addition, again because of CO and CO
2High temperature active, can make metalwork produce decarburization, cause the decline of mechanical strength.And adopting nitrogen as protection gas, above problem will not exist.
Wiring terminal adopts 446 stainless steels or 4j28 alloy to make; 446 stainless steels are ferrochromes, are a kind of Ferritic Stainless Steels, and cost is relatively low; The 4J28 alloy is the resisto that contains of the homemade trade mark, physical property and 446 similar, and the material defective is less, and these two kinds of materials all can be used in the terminal connections post because of having similar physics and chemical property.
Adopt the TCG-910S glass material that meets the RoHs requirement to seal sintering between the jack of wiring terminal and lid, sintering process adopts the continous way sintering furnace of wet nitrogen protection to carry out sintering, is used to guarantee that metallic material can not cause tightness or electrical properties to descend because of decarburization causes reduction in strength or carbon residue to pollute;
TCG-910S glass is to improve to form on the basis of former common terminal glass TCG-910, compare with other glass materials, advantage is that it has lower high temperature viscosity and activity, energy and metal, pottery form high-intensity physics and chemical bond layer, thereby make terminal can bear higher pressure, and glass mechanical property excellence, compressive strength and fracture toughness are higher than other glass.
Comprise preheating, sintering, annealing and four steps of cooling in wet nitrogen sintering process, wherein the zone of preheating temperature is 800 degrees centigrade, oxidizing atmosphere; The sintering zone temperature is 950 degrees centigrade, oxidizing atmosphere; The annealed zone temperature is 400 degrees centigrade, neutral atmosphere; The cooling zone temperature is 100 degrees centigrade, neutral atmosphere.
These temperature are formulated according to properties of materials, each warm area effect difference, the zone of preheating purpose is for obtaining suitable oxidated layer thickness, the sintering zone is to make glass fusion and produce high temperature active under this temperature, form the chemical bond layer with metal, the annealed zone temperature is to make the microstructure of metals homogenization, and and glass forming substance reason binder course.The cooling zone temperature is in order to make glass avoid strong temperature shock.It is in order to ensure reliability of products that these temperature are set.
Described wiring terminal is provided with ceramic insulator, is used for further improving electrical properties, and ceramic insulator adopts Zirconia reinforced alumina to make, and has good mechanical, and electricity and thermal property, its expansion coefficient are @500 ℃ of 8.5 ± 0.5*10^-6/K (); Tensile strength is 400Mpa; Fracture toughness is 8.0; Insulating strength when temperature 18-25 ℃ and humidity 40-60% greater than 3000V/mm.
Existing ceramic insulation is made by talcum or forsterite at material, Zirconia reinforced alumina (ZTA) and other material mainly are its toughness and expansion coefficient, ZTA toughness is to compare talcum, it is high a lot of that forsterite and aluminium oxide are wanted, expansion coefficient and glass are more approaching, and matching is better.
Described thick molding procedure employing carbon content is 0.1～0.18% carbon steel, and available No. 15 carbon steels form crude green body by casting or forging.
Described wiring terminal coats the oxygen free copper core with 446 stainless steels and makes, and is used for the compressor greater than 2000W power, passes through to allow big electric current.
In the described wet nitrogen sintering: be 20 minutes preheat time; Sintering time is 25 minutes; Annealing time is 30 minutes; Be cooled to 20 minutes.
The present invention is used for carbon dioxide refrigeration compressor as wire connecting portion, by inserted sheet on the welding resistance, is beneficial to wiring on the stem stem; Product and compressor case are welded into one by the mode of projection welding, and outside wiring terminal connects external power supply, and inboard wiring terminal connects motor, can be widely used in supercritical carbon dioxide refrigeration compressor or secondary compression-type carbon-dioxide gas compressor.
A kind of beneficial effect that is used for the tenminal block of carbon dioxide refrigeration compressor of the present invention is:
The present invention is used for carbon dioxide refrigeration compressor as wire connecting portion, by inserted sheet on the welding resistance, is beneficial to wiring on the stem stem of the present invention; Product and compressor case are welded into one by the mode of projection welding, and outside wiring terminal connects external power supply, and inboard wiring terminal connects motor, can be widely used in supercritical carbon dioxide refrigeration compressor or secondary compression-type carbon-dioxide gas compressor.Can satisfy the usage requirement of following carbon dioxide refrigeration compressor tenminal block, can reach the requirement of low manufacture cost again, further advance the industrialization production of carbon dioxide refrigeration compressor, use the compressor of hostile environments refrigeration agent with final replacement.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a cover body structure front view of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is a cover body structure rear view of the present invention;
Fig. 4 is a wiring terminal overall structure schematic representation of the present invention;
Fig. 5 is a ceramic insulation substructure front view of the present invention;
Fig. 6 is the B-B sectional view of Fig. 5;
Fig. 7 is an overall structure front view of the present invention;
Fig. 8 is the C-C sectional view of Fig. 7;
Fig. 9 is an overall structure rear view of the present invention.
Description of reference numerals:
10, lid 11, jack 20, wiring terminal
30, ceramic insulator
Embodiment
Referring to figs. 1 through Fig. 9, the present invention implements like this:
In Fig. 1 to Fig. 9, a kind of tenminal block that is used for carbon dioxide refrigeration compressor, it comprises lid 10 and wiring terminal 20, wiring terminal 20 is plugged in the jack 11 on the lid 10, lid 10 is that 0.1～0.18% carbon steel is made by adopting carbon content, the production technology of lid 10 comprises thick molding procedure and two stages of finishing step, thick molding procedure is that the employing carbon content is 0.1～0.18% carbon steel formation crude green body, be to adopt No. 15 carbon steels in the present embodiment, finishing step is to adopt lathe that crude green body is cut, so that crude green body reaches required dimensional accuracy and surface roughness; Wiring terminal 20 adopts 446 stainless steels or 4j28 alloy to make; Seal sintering with the TCG-910S glass material between the jack 11 of wiring terminal 20 and lid 10, sintering process adopts the continous way sintering furnace of wet nitrogen protection to carry out sintering, is used to guarantee that metallic material can not cause tightness or electrical properties to descend because of decarburization causes reduction in strength or carbon residue to pollute; Comprise preheating, sintering, annealing and four steps of cooling in wet nitrogen sintering process, wherein the zone of preheating temperature is 800 degrees centigrade, oxidizing atmosphere; The sintering zone temperature is 950 degrees centigrade, oxidizing atmosphere; The annealed zone temperature is 400 degrees centigrade, neutral atmosphere; The cooling zone temperature is 100 degrees centigrade, neutral atmosphere.In the wet nitrogen sintering of present embodiment: be 20 minutes preheat time; Sintering time is 25 minutes; Annealing time is 30 minutes; Be cooled to 20 minutes.Can obtain better effect with the data in the present embodiment.
Warp is at test environment: temperature 18-25 ℃, and humidity 40-60% records following laboratory data:
| Mechanical performance index | Tightness | Thermal shock resistance | Anti-ultimate pressure | Anti-mechanical impact |
| Measured result and method | ??15Mpa ??CO 2Do not leak down | Do not leak in RT-250 ℃/10 seconds | 50MPa hydraulic pressure does not leak | 0.5Kg-0.5m bump does not leak |
| Electricity function index | Insulation resistance | Voltage proof intensity | Welding performance | Corrosion Protection |
| Measured result and method | ＞1000 megohms | ??＞2500VAC | Satisfy the projection welding requirement | Pass through neutral salt spray test |
The above, it only is a kind of preferred embodiment that is used for the tenminal block of carbon dioxide refrigeration compressor of the present invention, be not that technical scope of the present invention is imposed any restrictions, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention above any trickle modification, equivalent variations and modification that embodiment did.
Claims (5)
1, a kind of tenminal block that is used for carbon dioxide refrigeration compressor, it comprises lid (10) and wiring terminal (20), wiring terminal (20) is plugged in the jack (11) on the lid (10), it is characterized in that: described lid (10) is that 0.1～0.18% carbon steel is made by adopting carbon content, the production technology of lid (10) comprises thick molding procedure and two stages of finishing step, thick molding procedure is that the employing carbon content is 0.1～0.18% carbon steel formation crude green body, finishing step is to adopt lathe that crude green body is cut, so that crude green body reaches required dimensional accuracy and surface roughness;
Wiring terminal (20) adopts 446 stainless steels or 4j28 alloy to make;
Seal sintering with the TCG-910S glass material between the jack (11) of wiring terminal (20) and lid (10), sintering process adopts the continous way sintering furnace of wet nitrogen protection to carry out sintering, is used to guarantee that metallic material can not cause tightness or electrical properties to descend because of decarburization causes reduction in strength or carbon residue to pollute;
In wet nitrogen sintering process, comprise preheating, sintering, annealing and four steps of cooling, wherein
The zone of preheating temperature is 800 degrees centigrade, oxidizing atmosphere;
The sintering zone temperature is 950 degrees centigrade, oxidizing atmosphere;
The annealed zone temperature is 400 degrees centigrade, neutral atmosphere;
The cooling zone temperature is 100 degrees centigrade, neutral atmosphere.
2, a kind of tenminal block that is used for carbon dioxide refrigeration compressor according to claim 1, it is characterized in that described wiring terminal (20) is provided with ceramic insulator (30), be used for further improving electrical properties, ceramic insulator (30) adopts Zirconia reinforced alumina to make, and its expansion coefficient is @500 ℃ of (8.5 ± 0.5) * 10^-6/K (); Tensile strength is 400Mpa3; Fracture toughness is 8.0; Insulating strength when temperature 18-25 ℃ and humidity 40-60% greater than 3000V/mm.
3, a kind of tenminal block that is used for carbon dioxide refrigeration compressor according to claim 1 is characterized in that described thick molding procedure adopts No. 15 carbon steels to form crude green body by casting or forging.
4, a kind of tenminal block that is used for carbon dioxide refrigeration compressor according to claim 1 is characterized in that described wiring terminal (20) coats the oxygen free copper core with 446 stainless steels and makes, and is used for the compressor greater than 2000W power, passes through to allow big electric current.
5, a kind of tenminal block that is used for carbon dioxide refrigeration compressor according to claim 1, it is characterized in that in the described wet nitrogen sintering: be 20 minutes preheat time; Sintering time is 25 minutes; Annealing time is 30 minutes; Be cooled to 20 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108231A CN101634285A (en) | 2009-06-19 | 2009-06-19 | Wiring terminal for carbon dioxide refrigeration compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910108231A CN101634285A (en) | 2009-06-19 | 2009-06-19 | Wiring terminal for carbon dioxide refrigeration compressor |
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| CN101634285A true CN101634285A (en) | 2010-01-27 |
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| CN200910108231A Pending CN101634285A (en) | 2009-06-19 | 2009-06-19 | Wiring terminal for carbon dioxide refrigeration compressor |
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| CN (1) | CN101634285A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354817A (en) * | 2011-08-01 | 2012-02-15 | 黄山泰客轨道电气有限公司 | Wiring terminal and special wiring bolt |
| CN103441346A (en) * | 2013-07-30 | 2013-12-11 | 张家港市格致电器制造有限公司 | Sealed wiring holder used for compressor |
| CN106894998A (en) * | 2015-12-21 | 2017-06-27 | 欧伊特股份有限公司 | Compressor |
| CN108591025A (en) * | 2018-06-25 | 2018-09-28 | 海门亿峰机械零部件制造有限公司 | A kind of compressor of air conditioner upper shell cover and terminal base structure |
| CN108988099A (en) * | 2018-07-24 | 2018-12-11 | 深圳市南方源芯电气有限公司 | A kind of manufacturing method of sealed wiring column |
| CN109185103A (en) * | 2018-09-06 | 2019-01-11 | 蚌埠富源电子科技有限责任公司 | A kind of upper end cover of micro-compressor |
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| CN1924356A (en) * | 2005-08-30 | 2007-03-07 | 三洋电机株式会社 | Closed electric compressor |
| CN101259985A (en) * | 2008-03-27 | 2008-09-10 | 潮州市三江电子有限公司 | Glass sealing technique |
| CN101404360A (en) * | 2008-10-21 | 2009-04-08 | 潮州市三江电子有限公司 | Connector post of refrigeration compressor |
-
2009
- 2009-06-19 CN CN200910108231A patent/CN101634285A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924356A (en) * | 2005-08-30 | 2007-03-07 | 三洋电机株式会社 | Closed electric compressor |
| CN101259985A (en) * | 2008-03-27 | 2008-09-10 | 潮州市三江电子有限公司 | Glass sealing technique |
| CN101404360A (en) * | 2008-10-21 | 2009-04-08 | 潮州市三江电子有限公司 | Connector post of refrigeration compressor |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102354817A (en) * | 2011-08-01 | 2012-02-15 | 黄山泰客轨道电气有限公司 | Wiring terminal and special wiring bolt |
| CN102354817B (en) * | 2011-08-01 | 2014-04-16 | 黄山泰客轨道电气有限公司 | Wiring terminal and special wiring bolt |
| CN103441346A (en) * | 2013-07-30 | 2013-12-11 | 张家港市格致电器制造有限公司 | Sealed wiring holder used for compressor |
| CN106894998A (en) * | 2015-12-21 | 2017-06-27 | 欧伊特股份有限公司 | Compressor |
| CN106894998B (en) * | 2015-12-21 | 2020-05-19 | 欧伊特股份有限公司 | Compressor with a compressor housing having a plurality of compressor blades |
| CN108591025A (en) * | 2018-06-25 | 2018-09-28 | 海门亿峰机械零部件制造有限公司 | A kind of compressor of air conditioner upper shell cover and terminal base structure |
| CN108988099A (en) * | 2018-07-24 | 2018-12-11 | 深圳市南方源芯电气有限公司 | A kind of manufacturing method of sealed wiring column |
| CN109185103A (en) * | 2018-09-06 | 2019-01-11 | 蚌埠富源电子科技有限责任公司 | A kind of upper end cover of micro-compressor |
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Owner name: CHAOZHOU THREE-CIRCLE (GROUP) CO., LTD. Free format text: FORMER OWNER: CHAOZHOU SANJIANG ELECTRONICS CO., LTD. Effective date: 20120723 |
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Effective date of registration: 20120723 Address after: 521000 comprehensive building of three ring industrial city, Feng Tang, Guangdong, Chaozhou Applicant after: Chaozhou Three-Circle (Group) Co., Ltd. Address before: 515646, Guangdong City, Chaozhou Province Feng Tang Sanhuan Industrial City Complex Building Applicant before: Chaozhou Sanjiang Electronics Co., Ltd. |
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Application publication date: 20100127 |