CN101162113A - Structure of wiper decompressor for trans-critical CO2 refrigerating cycle system - Google Patents

Structure of wiper decompressor for trans-critical CO2 refrigerating cycle system Download PDF

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Publication number
CN101162113A
CN101162113A CNA2007100189954A CN200710018995A CN101162113A CN 101162113 A CN101162113 A CN 101162113A CN A2007100189954 A CNA2007100189954 A CN A2007100189954A CN 200710018995 A CN200710018995 A CN 200710018995A CN 101162113 A CN101162113 A CN 101162113A
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CN
China
Prior art keywords
rotor
bearing
cycle system
slide plate
cooling cycle
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.)
Granted
Application number
CNA2007100189954A
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Chinese (zh)
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CN100510572C (en
Inventor
彭学院
杨炳春
刁安娜
孙少毅
邢子文
郭蓓
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Suzhou Haladane New Energy Co., Ltd.
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Xian Jiaotong University
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Priority to CNB2007100189954A priority Critical patent/CN100510572C/en
Publication of CN101162113A publication Critical patent/CN101162113A/en
Application granted granted Critical
Publication of CN100510572C publication Critical patent/CN100510572C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3441—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F01C1/3442—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • F04C2210/261—Carbon dioxide (CO2)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

The invention discloses a structure of a gleithretter expansion machine for transcritical CO2 refrigeration cycle system, comprising an air cylinder body, wherein, one end of the air cylinder body is provided with a left end closure, the other end of the air cylinder body is provided with a bearing support which is arranged on a base; an inner chamber of the air cylinder body is provided with a rotor which is connected with a rotor shaft, a bearing is embedded inside the bearing support; the end part of the bearing is provided with a bearing gland bush which is inside provided with a shaft gland, the shaft gland is impacted by a right end closure; the rotor is connected with the rotor shaft by a key, the axial direction is not fixed, a floating construction is formed, that is the rotor is capable of moving in an axial direction freely; the rotor is further provided with two pairs of gleithretters which are vertically arranged, the two pair gleithretters are connected with each other through a connecting rod, a papilionaceous spring or a cylindrical spring is arranged between the connecting rod and the gleithretter. With compact structure, small volume, light weight, and small friction and leakage, the gleithretter expansion machine can effectively prevent the gleithretter from breaking away the air cylinder.

Description

A kind ofly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system
Technical field
The present invention relates to a kind of dynamic power machine, particularly a kind ofly be used to stride critical CO 2The structure of a kind of slipping sheet expander of cooling cycle system.
Background technology
Stride critical CO 2Cycle refrigeration system is a kind of novel environment friendly refrigeration system, but since system pressure than conventional refrigeration system pressure height, pressure reduction is big, so choke pressure loss is very big.Use decompressor to replace choke valve can reduce the irreversible loss of throttling process, the while can be reclaimed the expansion work of high-pressure working medium again, can improve the COP value of refrigeration system greatly.General slipping sheet expander is under the situation of high pressure, High Pressure Difference, and leakage and friction loss are very serious, and particularly the slide plate bottom is not having under the situation of special back pressure, occurs slide plate and cylinder break-off easily.Increase back pressure or add spring and can prevent that slide plate breaks away from, but bring very big friction loss.According to the data-searching that the inventor carried out, do not find document related to the present invention.
Summary of the invention
The objective of the invention is to, a kind of critical CO that is used to stride is provided 2The structure of the slipping sheet expander of cooling cycle system, the disengaging that this slipping sheet expander compact conformation, volume be little, in light weight, can effectively prevent slide plate and cylinder, leak little, friction is low, is specially adapted to CO 2High Pressure Difference refrigeration systems such as kind of refrigeration cycle.
Realize that the technical solution that above-mentioned purpose is taked is: a kind ofly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system comprises a cylinder block, at an end of cylinder block left end cap is installed, and the other end of cylinder block is equipped with bearing block, and bearing block is installed on the base; Be provided with rotor in the inner chamber of cylinder block, rotor is connected with armature spindle, and bearing is embedded in the bearing block; There is bearing gland the end of bearing, and the axle envelope is arranged in the bearing gland, and the axle envelope compresses by right end cap; It is characterized in that, be connected with key between described rotor and the armature spindle, axially fixing, form floating structure, promptly rotor axially can move freely; Also be provided with vertically arranged 2 pairs of slide plates on the rotor, link to each other by connecting rod between every pair of slide plate, and connecting rod and slide plate intermediate arrangement there are butterfly spring or cylindrical spring.
Of the present inventionly be used to stride critical CO 2The slipping sheet expander of cooling cycle system, it is simple in structure, easy to process, volume is little, in light weight, leak and friction all less than existing slipping sheet expander.Replace choke valve with this sliding vane type expander, reclaim the expansion work of high-pressure working medium, reach good energy-saving effect, can be widely used in CO 2Etc. the air-conditioning of working medium, heat pump in the circulatory systems such as water heater, changes the bigger shortcoming of restriction loss when using choke valve, can improve the COP of system greatly.
Description of drawings
Fig. 1 is the structural representation of slipping sheet expander of the present invention.
Fig. 2 is the horizontal section schematic diagram of sliding vane type expander in the slipping sheet expander of the present invention.
Fig. 3 is the schematic diagram of slide plate combination in the slipping sheet expander of the present invention.
Fig. 4 is the schematic diagram that adopts molded lines in the slipping sheet expander of the present invention.
Label among above-mentioned Fig. 1 is respectively: 1 is the sliding vane type expander left end cap, and 2 is cylinder block, and 3 is rotor, 4 is bearing block, and 5 is key, and 6 is bearing, 7 is the O RunddichtringO, and 8 is bearing gland, 9 right end caps, 10 are rubber seal, 11 is base, and 12 is slide plate, and 13 is armature spindle, 14 is connecting rod, and 15 is butterfly spring.
Label among Fig. 2 is respectively: 2 are cylinder block, and 5 is key, and 12 is slide plate, and 13 is armature spindle, and 14 is connecting rod, and 15 is butterfly spring.
Label among Fig. 3 is respectively: 12 are slide plate, and 14 is connecting rod, and 15 is butterfly spring, and 16 is cylindrical spring.
The present invention is described in further detail below in conjunction with embodiment that accompanying drawing and inventor provide, so that clearer understanding purpose of the present invention, concrete feature of the module and advantage.
The specific embodiment
Please refer to Fig. 1 and Fig. 2, of the present inventionly be used to stride critical CO 2The slipping sheet expander of cooling cycle system comprises: a cylinder block 2, and an end of cylinder block 2 is equipped with left end cap 1, and the other end of cylinder block 2 is equipped with bearing block 4, and bearing block 4 is installed on the base 11; Be provided with rotor 3 in cylinder block 2 inner chambers, rotor 3 is connected with armature spindle 13, and rotor 3 evenly is furnished with 2 pairs of slide plates 12, links to each other by connecting rod 14 between every pair of slide plate 12, and bearing 6 is embedded in the bearing block 4; There is bearing gland 8 end of bearing 6, and axle envelope 10 is arranged in the bearing gland 8, and axle envelope 10 compresses by right end cap 9; Rotor 3 links to each other with the rotating shaft 13 of bearing 6 by key 5, and is axially unfixing, forms floating structure; Between the bottom of slide plate 12 and the connecting rod 14 butterfly spring 15 is installed.
Between bearing block 4 and the right end cap 9 and between bearing gland 8 and the right end cap 9 O RunddichtringO 7 is installed.
Rotor 3 is installed in cylinder block 2 inner chambers by rotating shaft 13, and slide plate 12 is arranged in the vane slot of internal rotor.
The material that armature spindle 13 adopts is 20CrMnSi, and surface hardening is to HRC50-55, to reduce wearing and tearing.The material of cylinder and parts thereof uses 45 steel, and slide plate 12 is for to be coated with the aluminium alloy or the stainless steel of MoS2 or Ti friction coat, or the resin material of self-lubricating function is arranged;
The cylinder profile of described cylinder block 2 is in the arbitrarily angled equal diameters that all makes cylinder, and the transition of each section line smoothing.Cylinder profile is in the equal diameters of arbitrarily angled cylinder, and the transition of each section line smoothing.
Rotor 3 adopts cantilever design, and bearing 6 is contained in the bearing block 4 of rotor one side, is used for rationally bearing the load of entire equipment;
Bearing 6 is the self-lubricating ball bearing.Axle envelope 10 is self-lubricating rubber shaft seals.
Rotor 3 is a floating structure, promptly only is connected with key 5 between rotor 3 and the armature spindle 13, does not axially fix, so rotor 3 axially can move freely.When work, the axial force of oil film meeting automatic balancing rotor 3 both sides of rotor 3 both sides avoids rotor stuck.
Butterfly spring 15 deflections are little but deformation force is big, can under very little distortion, bear the gas force that High Pressure Difference produces, guarantee the applying of slide plate 12 and cylinder, prevent that the top of slide plate 12 from leaking, butterfly spring 15 can be adjusted deflection automatically the wearing and tearing of slide plate 12 or cylinder are compensated simultaneously.Under different operating modes, can select to replace butterfly springs 15, particularly when the less situation of pressure reduction with cylindrical spring 16.
As can be seen from Figure 1: rotor 3 is a floating structure, promptly only is connected with key between rotor and the rotating shaft 13, does not axially fix, so rotor axially can move freely.When work, the axial force of oil film meeting automatic balancing rotor 3 both sides of rotor both sides avoids rotor 3 to be stuck.
Butterfly spring 15 is installed between slide plate 12 and the connecting rod 14 from Fig. 3 (a) as can be seen, is guaranteed the applying of slide plate 12 tops and cylinder inner wall, prevent the leakage of slide plate 12 tops.Guarantee the self-compensating after cylinder inner wall or slide plate 12 wear and tear simultaneously.Fig. 3 (b) provides another kind of slide plate combination, and wherein cylindrical spring 16 is used for replacing butterfly spring 15, adapts to the less operating mode of pressure reduction.
As can be seen from Figure 4 the molded lines of using in the cylinder block 3 is formed by connecting by three sections curves.One section sealing circular arc that guarantees the aperture sealing is arranged between induction port and the vent ports, and these two sections curves are by one section O-ring arc light slip.The characteristics of this molded lines are the equal diameters at arbitrarily angled cylinder, and the transition of each section line smoothing.
The principal mode line of the cylinder profile of cylinder block be conchoid: ρ=R-e * ecos (θ) wherein R be cylinder radius, e is an offset, seal section adopts circular arc: ρ=R-e in order to guarantee connecting naturally of these two kinds of curves, adopts one section easement curve to connect: ρ=a0+a1 * θ 1+ a2 * θ 2+ a3 * θ 3+ a4 * θ 4+ a5 * θ 5, by guaranteeing utmost point footpath and the single order of curve, the second order equal undetermined coefficient of determining reciprocal at two ends.The characteristics of this molded lines are the equal diameters at arbitrarily angled cylinder, and the transition of each section line smoothing.

Claims (8)

1. one kind is used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system comprises a cylinder block (2), at an end of cylinder block (2) left end cap (1) is installed, and the other end of cylinder block (2) is equipped with bearing block (4), and bearing block is installed on the base (11); Be provided with rotor (3) in the inner chamber of cylinder block (2), rotor (3) is connected with armature spindle (13), and bearing (6) is embedded in the bearing block (4); There is bearing gland (8) end of bearing (6), and axle envelope (10) is arranged in the bearing gland (8), and axle envelope (10) compresses by right end cap (9); It is characterized in that, be connected with key (5) between described rotor (3) and the armature spindle (13), axially fixing, form floating structure, promptly rotor (3) axially can move freely; Also be provided with vertically arranged 2 pairs of slide plates (12) on the rotor (3), link to each other by connecting rod (14) between every pair of slide plate (12), and connecting rod (14) there is butterfly spring (15) with slide plate (12) intermediate arrangement.
2. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, the cylinder profile of described cylinder block (2) is in the arbitrarily angled equal diameters that all makes cylinder, and the transition of each section line smoothing.
3. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, described slide plate (12) is arranged in the inner vane slot of rotor (3).And link to each other connecting rod (14) and middle butterfly spring (15) or the cylindrical spring (16) of being added with of slide plate (12) in the middle of every pair of slide plate (12) with connecting rod (14).
4. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, between described bearing block (4) and the right end cap (9) and between bearing gland (8) and the right end cap (9) O RunddichtringO (7) is installed.
5. as claimed in claim 2ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, the principal mode line of described cylinder profile is a conchoid, and one section sealing circular arc that guarantees the aperture sealing is arranged between the inlet and outlet aperture, and these two sections curves are by one section smooth connection of easement curve.
6. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, the material of described slide plate (12) is for being coated with MoS 2Or the aluminium alloy of Ti friction coat makes, or adopts stainless steel to make, or adopts and have the resin material of self-lubricating function to make.
7. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, described bearing (6) is the self-lubricating ball bearing.
8. as claimed in claim 1ly be used to stride critical CO 2The structure of the slipping sheet expander of cooling cycle system is characterized in that, described axle envelope (10) is the self-lubricating rubber shaft seal.
CNB2007100189954A 2007-11-02 2007-11-02 Structure of wiper decompressor for trans-critical CO* refrigerating cycle system Expired - Fee Related CN100510572C (en)

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CNB2007100189954A CN100510572C (en) 2007-11-02 2007-11-02 Structure of wiper decompressor for trans-critical CO* refrigerating cycle system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2007100189954A CN100510572C (en) 2007-11-02 2007-11-02 Structure of wiper decompressor for trans-critical CO* refrigerating cycle system

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CN101162113A true CN101162113A (en) 2008-04-16
CN100510572C CN100510572C (en) 2009-07-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074550A (en) * 2014-07-08 2014-10-01 重庆春升科技发展有限公司 Lubricating oil-free sliding vane expander and/or compressor
CN105509360A (en) * 2016-03-04 2016-04-20 河北科技大学 Novel efficient energy-saving expander for carbon dioxide and heat pump refrigeration technologies

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1751994A1 (en) * 1968-08-29 1971-10-14 Schmid & Wezel Pneumatic rotary piston motor for left and right rotation
CN1222741C (en) * 2001-12-06 2005-10-12 天津大学 Rotor-type expander by CO2 cross-critical refrigerating cycle
JP2007162493A (en) * 2005-12-09 2007-06-28 Ntn Corp Compression expansion turbine system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074550A (en) * 2014-07-08 2014-10-01 重庆春升科技发展有限公司 Lubricating oil-free sliding vane expander and/or compressor
CN105509360A (en) * 2016-03-04 2016-04-20 河北科技大学 Novel efficient energy-saving expander for carbon dioxide and heat pump refrigeration technologies
CN105509360B (en) * 2016-03-04 2018-04-03 河北科技大学 A kind of energy-conservation expanding machine for carbon dioxide heat-pump Refrigeration Technique

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Publication number Publication date
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Owner name: SUZHOU HALADANE NEW ENERGY CO., LTD.

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Effective date of registration: 20121217

Address after: 215124, Suzhou, Jiangsu province Suzhou Industrial Park, the only Town Pavilion Road, No. 18 building, D107-2

Patentee after: Suzhou Haladane New Energy Co., Ltd.

Address before: 710049 Xianning Road, Shaanxi, China, No. 28, No.

Patentee before: Xi'an Jiaotong University

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090708

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CF01 Termination of patent right due to non-payment of annual fee