CN206419206U - Asymmetric side valve type single screw rod refrigeration compressor - Google Patents
Asymmetric side valve type single screw rod refrigeration compressor Download PDFInfo
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- CN206419206U CN206419206U CN201720026384.3U CN201720026384U CN206419206U CN 206419206 U CN206419206 U CN 206419206U CN 201720026384 U CN201720026384 U CN 201720026384U CN 206419206 U CN206419206 U CN 206419206U
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Abstract
The utility model is related to a kind of asymmetric side valve type single screw rod refrigeration compressor, including electric rotating machine, compressor casing, screw rotor, two spider pieces, short guiding valve and long guiding valve, the electric rotating machine includes motor stator, rotor and main shaft, the main shaft is fixedly connected with the screw rotor, two described star-wheels are meshed with screw rotor respectively, the long guiding valve, which is used, level regulation, the short guiding valve uses step-less adjustment, the short guiding valve and long guiding valve are respectively provided on compressor casing at the by-pass port of both sides, a displacement transducer is provided with the short guiding valve.The utility model load control range is wider, and energy-conservation is reliable, is contrasted with symmetrical expression volumetric void fraction, COP is identical at full capacity；Asymmetric volumetric void fraction is than symmetrical expression volumetric void fraction efficiency high 24% during 50% load；Asymmetric volumetric void fraction is than symmetrical expression volumetric void fraction efficiency high 4% during 75% load, and IPLV can effectively improve 12%.
Description
Technical field
The utility model is related to a kind of invariable frequency compressor, and in particular to a kind of asymmetric side valve type single screw rod refrigerant compression
Machine.
Background technology
In recent years, in refrigeration air-conditioner application field, screw compressor is increasingly popularized.Because reliability is high, build
Small, lightweight, under equal refrigerating capacity, helical-lobe compressor turns into the preferable outfit of refrigeration unit.Nowadays, environmental problem has been
It is the subject matter of today's society, developing more energy-efficient refrigeration unit also becomes particularly important.
Existing single screw rod type refrigerating compressor is mainly made up of a motor, screw rotor and compression cylinder.Its
In, in compression cylinder side provided with two symmetrical expression volumetric void fraction guiding valves, by adjusting the guiding valve, so that it is symmetrical to adjust extraction flow
Volumetric void fraction guiding valve carries solenoid valve control high-pressure oil feed and draining by a connection support connection, compressor by increase and decrease, and oil circuit leads to
Piston and connection support are crossed while controlling the motion of two guiding valves.The single-screw compressor designed at present is mostly using two stars
Symmetrical volume adjustment control is taken turns, 25% to 100% step-less adjustment of load can only be realized, it is impossible to control the regulation of wider scope.
In consideration of it, the step-less adjustment scope in order to improve compressor load, proposes a kind of asymmetric side valve type single screw rod system
Cold compressor is the problem to be studied of the utility model.
The content of the invention
The utility model purpose is to provide a kind of asymmetric side valve type single screw rod refrigeration compressor, to solve in the prior art
The problems such as.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：Asymmetric side valve type single screw rod refrigerant compression
Machine, including an electric rotating machine, a compressor casing, a screw rotor, two spider pieces, a short guiding valve and a long guiding valve, institute
Stating electric rotating machine includes a motor stator, a rotor and a main shaft, and the main shaft is fixedly connected with the screw rotor,
Two described star-wheels are meshed with screw rotor respectively, and the long guiding valve is using there is level regulation, and the short guiding valve is using stepless
Regulation, the short guiding valve and long guiding valve are respectively provided on compressor casing at the by-pass port of both sides, on the short guiding valve
Provided with a displacement transducer；
A compression cylinder is provided with for the short guiding valve, the compression cylinder has two compression work chambers, this two compression works
It is respectively the first compression work chamber and the second compression work chamber as chamber, the first compression work chamber is pressed towards compression cylinder cap side, second
Contracting working chamber is connected on a piston, the piston towards short guiding valve side between the first compression work chamber and the second compression work chamber
It is cased with a unloaded spring;The first hydraulic fluid port is offered in the second compression work chamber, Liang Ge branches are provided with for first hydraulic fluid port
Oil circuit, first branch's oil circuit connects the main oil-feed port of the compressor by one first off-load magnetic valve, and second branch's oil circuit leads to
The suction end that one first increment of load magnetic valve connects the compressor is crossed, the piston of the compression cylinder connects with the short guiding valve screw thread
Connect, the short guiding valve other end is provided with a displacement transducer；
A hydraulic cylinder is provided with for the long guiding valve, the long guiding valve is located in hydraulic cylinder, will as the piston of hydraulic cylinder
Hydraulic cylinder is divided into two working chambers；The hydraulic cylinder has two hydraulic fluid ports towards the hydraulic intracavitary of compression cylinder cap side, respectively
For the second hydraulic fluid port and the 3rd hydraulic fluid port, wherein, the second hydraulic fluid port is oil-feed port, the oil-feed port by one second off-load magnetic valve with it is described
The main oil-feed port connection of compressor, the 3rd hydraulic fluid port is drain tap, and the drain tap passes through one second increment of load magnetic valve and the compression
The suction end connection of machine.
Relevant content in above-mentioned technical proposal is explained as follows：
1st, in such scheme, for the short guiding valve, one first gas port is offered on the first compression work chamber, should
First gas port leads to the suction end of the compressor.
2nd, in such scheme, in addition to increment of load oil circuit is aided in all the way, the auxiliary increment of load oil circuit is provided with a pilot solenoid valve,
When operating mode is severe, i.e., when the height pressure difference of short guiding valve both sides is smaller, making a concerted effort suffered by short guiding valve is smaller, is now insufficiently resistant to
The reaction force of unloaded spring, short guiding valve can not increment of load；At this moment pilot solenoid valve is opened, makes the first compression work intracavitary
Gas circuit is connected with gases at high pressure, while opening the first increment of load magnetic valve, under high pressure effect, promotes piston to the described second compression
Working chamber is moved, and the oil of the second compression work intracavitary is let out to low pressure, so that can normal increment of load under low-pressure ratio operating mode.
3rd, in such scheme, in addition to a controlling organization, institute's displacement sensors send the position of short guiding valve to described
Controlling organization, the controlling organization is according to the position signalling of the short guiding valve received, to control to be pressed into or discharge in the first hydraulic fluid port
Oil mass so that realize short guiding valve position control.
4th, in such scheme, for the hydraulic cylinder, for the compression cylinder, the first increment of load magnetic valve correspondence draining
Set, the first off-load magnetic valve correspondence oil-feed is set, the auxiliary increment of load magnetic valve correspondence high pressure admission is set.
5th, in such scheme, for the hydraulic cylinder, the second increment of load magnetic valve correspondence draining is set, the second off-load electricity
Magnet valve correspondence fuel feeding is set.
6th, in such scheme, IPLV (integrated part load value) Integrated part-load value is
The part-load efficiency index of air adjustment handpiece Water Chilling Units is represented with a single numerical value.
7th, in such scheme, for the short guiding valve, a unloaded spring is additionally provided with compression cylinder, unloaded spring effect
On the piston, for the reset after compressor shutdown to short guiding valve.
8th, in such scheme, the Energy Efficiency Ratio of air conditioner is exactly nominal capacity (heating capacity) and runs power ratio, i.e.,
EER and COP.EER is the coefficient of performance of refrigerating of air conditioner, also referred to as Energy Efficiency Ratio, represents the unit power refrigerating capacity of air conditioner.COP
It is refrigeration (heat) amount produced and the ratio between (heat) institute power consumption that freezes in refrigeration (heat) circulation, is divided into when freezing and heating
COP。
9th, regulation that is described to have level regulation in such scheme, having level regulation to be exactly gear, refers to that long guiding valve can only be deposited
In two regulation stalls, step-less adjustment is exactly that within the scope of one, smoothly continuous speed adjustment, refers to short guiding valve in certain distance
It is interior can continuously adjusting position.
Utility model works principle is：Short guiding valve and long guiding valve are controlled respectively using independent hydraulic cylinder, and one
Individual use has a grade control, the stepless control of a use：
Compression cylinder is provided with for the short guiding valve, compression cylinder has two working chambers, and two working chambers are respectively first
A piston is connected between compression work chamber and the second compression work chamber, two working chambers, the first compression work chamber is compression cylinder cap
Side, the second compression work chamber is short guiding valve side.A unloaded spring is cased with the second compression work intracavitary, piston.In the first pressure
One first gas port is offered on contracting working chamber, the gas port leads to compressor air suction end by a restriction（Low-pressure side）, second
One first hydraulic fluid port is offered on compression work chamber, for the first hydraulic fluid port You Liangge branches oil circuit, is respectively set on Liang Ge branches oil circuit
There is a magnetic valve.First branch's oil circuit passes through the first off-load magnetic valve connection compression owner's oil-feed port（Hydraulic oil）, the second branch
Oil circuit connects compressor air suction end by the first increment of load magnetic valve（Low-pressure side）.The piston of compression cylinder is threadedly coupled with short guiding valve,
The short guiding valve other end is provided with a displacement transducer.Because in screw rotor and spider piece compression process, short guiding valve is close to piston
The end face of side is acted on by gases at high pressure, and short another side end face of guiding valve is acted on by low pressure, therefore short guiding valve is all the time by one by height
Calm the anger make a concerted effort Fv of the body to low pressure direction, promotees to make it have the trend to moving linearly away from the first compression work cavity direction.
When needing off-load, by the first off-load magnetic valve pulse to electricity, the first hydraulic fluid port connection compression owner's oil-feed port is high
A certain amount of oil pressure is entered the second compression work chamber by pressure.When the first off-load magnetic valve is powered off, the second compression work chamber turns into envelope
Closed chamber, interior to be full of a certain amount of oil, because oil belongs to incompressible liquid, short guiding valve is made a concerted effort the reaction force of Fv and hydraulic oil
With spring dynamic balance so that piston has been parked in a certain load position.When continuing to the first unloading magnetic valve pulse to electricity, then after
Continue oil-filled to the second compression work chamber, until piston is moved to cylinder cap, whole working chamber turns into the second compression work chamber, and
Full of oil, now short guiding valve is in minimum load position；When needing increment of load, electricity is given by the first increment of load magnetic valve pulse, the
One hydraulic fluid port is connected with compressor air suction end, and the oil of the second compression work intracavitary is gradually toward leaking, when releasing certain gauging, and first
Increment of load closed electromagnetic valve, the closing of the second compression work chamber, now piston is parked at a certain load.Continue to the first increment of load magnetic valve
During energization, the oil of the second compression work chamber continues toward leaking, when reaction force and the short guiding valve of spring-compressed make a concerted effort Fv it is equal when,
Piston can not be continued to move along, and now short guiding valve has been in fully loaded position.With this, by adjusting the second compression work intracavitary
Oil body accumulated amount, to realize the step-less adjustment of short guiding valve.
Hydraulic cylinder is provided with for the long guiding valve, long guiding valve is located in hydraulic cylinder, equivalent to the piston of hydraulic cylinder, so that will
Hydraulic cylinder is divided into two working chambers；The hydraulic cylinder has two hydraulic fluid ports towards the hydraulic intracavitary of compression cylinder cap side, respectively
For the second hydraulic fluid port and the 3rd hydraulic fluid port, wherein, the second hydraulic fluid port is oil-feed port, the oil-feed port by one second off-load magnetic valve with it is described
The main oil-feed port connection of compressor, the 3rd hydraulic fluid port is drain tap, and the drain tap passes through one second increment of load magnetic valve and the compression
The suction end connection of machine.When persistently giving the second off-load solenoid valves, oil-feed port is connected with compression owner's oil-feed port, is let out simultaneously
Hydraulic fluid port is to close, and hydraulic oil promotes long guiding valve to move forward, and is now off-load.When long guiding valve reaches restraining position, now
Minimum load position is reached, magnetic valve power-off, oil-feed port is closed, and long guiding valve is maintained at minimum load position；When needing increment of load,
Second increment of load solenoid valves, drain tap is connected with compressor air suction end, and the hydraulic oil in working chamber is discharged from drain tap, now
It is moved rearwards by as the long guiding valve of piston, when reaching restraining position at the top of long guiding valve, now hydraulic oil has all been let out to the greatest extent, long to slide
Valve is maintained at fully loaded position.Increasing（Subtract）Carry in whole process, long guiding valve is spacing come holding position by the physics at two ends, only
Two-stage：Fully loaded position and minimum load position, therefore, the regulation of long guiding valve, which belongs to, level regulation.
Because above-mentioned technical proposal is used, the utility model has following advantages compared with prior art：
1st, asymmetric volumetric void fraction and symmetrical expression volumetric void fraction are contrasted, and load control range is wider, at full capacity COP phases
Together；Asymmetric volumetric void fraction is than symmetrical expression volumetric void fraction efficiency high 24% during 50% load；Asymmetric volume control during 75% load
System is than symmetrical expression volumetric void fraction efficiency high 4%.
2nd, the Compressor Group of symmetrical expression volumetric void fraction is compared using the Compressor Group of asymmetric volumetric void fraction, IPLV can
Effectively improve 12%, by taking 200RT units as an example, year more than 50,000 yuan of power cost saving.
Brief description of the drawings
Accompanying drawing 1 is the sectional view of asymmetric side valve type Spiral Lobe Refrigeration Compressor in the present embodiment；
Accompanying drawing 2 is the partial schematic diagram of asymmetric side valve type Spiral Lobe Refrigeration Compressor in the present embodiment.
In the figures above：1st, motor stator；2nd, rotor；3rd, main shaft；4th, screw rotor；5th, short guiding valve；6th, long guiding valve；
7th, compression cylinder；8th, hydraulic cylinder；9th, displacement transducer；10th, piston；11st, unloaded spring.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model：
Embodiment：Asymmetric side valve type single screw rod refrigeration compressor
Referring to accompanying drawing 1-2, asymmetric side valve type single screw rod refrigeration compressor, including an electric rotating machine, a compressor casing,
One screw rotor 4, two spider pieces（Not shown in figure）, a short guiding valve 5 of long guiding valve 6 and one, the electric rotating machine include one
Motor stator 1, a rotor 2 and a main shaft 3, the main shaft 3 are fixedly connected with the screw rotor 4, described two
Star-wheel is meshed with screw rotor 4 respectively, and the long guiding valve 6 is using there is level regulation, and the short guiding valve 5 uses step-less adjustment, institute
State long guiding valve 6 and short guiding valve 5 is respectively provided on compressor casing at the by-pass port of both sides.
Compression cylinder 7 is provided with for the short guiding valve 5, compression cylinder 7 has two compression work chambers, two compression work chambers
A piston 10, the first compression work chamber are connected between respectively the first compression work chamber and the second compression work chamber, two working chambers
For cylinder head side, the second compression work chamber is short guiding valve side.A unloaded spring is cased with the second compression work intracavitary, piston 10
11.One first gas port is offered on the first compression work chamber, the gas port leads to low pressure by a restriction, work is compressed second
Make to offer one first hydraulic fluid port on chamber, for the first hydraulic fluid port You Liangge branches oil circuit, an electricity is respectively provided with Liang Ge branches oil circuit
Magnet valve.First branch's oil circuit connects main oil-feed port by the first off-load magnetic valve（Hydraulic oil）, second branch's oil circuit passes through first
Increment of load magnetic valve connection compressor air suction end（Low-pressure side）.
When compression cylinder 7 is not acted on short guiding valve 5, due in screw rotor 4 and spider piece compression process, short guiding valve
5 end face close to the side of piston 10 is acted on by gases at high pressure, and another side end face of short guiding valve 5 is acted on by low pressure, therefore short guiding valve 5 is all the time
Made a concerted effort Fv from gases at high pressure to low pressure direction by one, rush makes it have to away from the first compression work cavity direction straight line and moved
Dynamic trend.
When needing off-load, by the first off-load magnetic valve pulse to electricity, the first hydraulic fluid port connection compression owner's fuel feeding
Mouthful, a certain amount of oil pressure is entered the second compression work chamber by high pressure.When the first off-load magnetic valve is powered off, the second compression work chamber into
Interior to be full of a certain amount of oil for closing chamber, because oil belongs to incompressible liquid, short guiding valve is made a concerted effort the anti-work of Fv and hydraulic oil
Firmly with spring dynamic balance so that piston 10 has been parked in a certain load position.When continuation to the first unloading magnetic valve pulse to electricity
When, then continue oil-filled to the second compression work chamber, until piston 10 is moved to cylinder cap, whole working chamber turns into the second compression
Working chamber, and full of oil, now short guiding valve 5 is in minimum load position；When needing increment of load, pass through the first increment of load magnetic valve arteries and veins
Rush to electricity, the first hydraulic fluid port is connected with compressor air suction end, the oil of the second compression work intracavitary is a certain amount of when releasing gradually toward leaking
When oily, the first increment of load closed electromagnetic valve, the closing of the second compression work chamber, now piston 10 is parked at a certain load.Continue to
During one increment of load solenoid valves, the oil of the second compression work chamber continues toward leaking, when reaction force and the short guiding valve of spring-compressed
When Fv is equal with joint efforts, piston 10 can not be continued to move along, and now short guiding valve 5 has been in fully loaded position.Therefore, increase by first
Magnetic valve is carried, dredge oil amount is adjusted, to promote the increment of load of short guiding valve 5 to move；By the first off-load magnetic valve, oil inlet quantity is adjusted, is come
The off-load of short guiding valve 5 is promoted to move.In a word, by adjusting the oil body accumulated amount of the second compression work intracavitary, to realize short guiding valve 5
Step-less adjustment.
Being provided with for the long guiding valve 6 on hydraulic cylinder 8, hydraulic cylinder 8 has two working chambers, has two in working chamber
Hydraulic fluid port, i.e. the 3rd hydraulic fluid port and the 4th hydraulic fluid port, the 3rd hydraulic fluid port are oil-feed port, and the hydraulic fluid port connects compressor by the second off-load magnetic valve
Main oil-feed port（Hydraulic oil）, the 4th hydraulic fluid port is drain tap, connects suction side by the second increment of load magnetic valve, the long guiding valve 6 is set
In hydraulic cylinder 8, equivalent to the piston of hydraulic cylinder 8.When persistently giving the second off-load solenoid valves, oil-feed port and compression owner
Oil-feed port is connected, while drain tap is to close, hydraulic oil promotes long guiding valve 6 to move forward, and is now off-load.When long guiding valve 6
When reaching restraining position, minimum load position is now reached, magnetic valve power-off, oil-feed port is closed, and long guiding valve 6 is maintained at minimal negative
Lotus position；When needing increment of load, the second increment of load solenoid valves, drain tap and compressor air suction end（Low-pressure side）Connection, work
The hydraulic oil of intracavitary is discharged from drain tap, and this duration guiding valve 6 is moved rearwards by, when the long top of guiding valve 6 reaches restraining position, now
Hydraulic oil is all let out to the greatest extent, and long guiding valve 6 is maintained at fully loaded position.Increasing（Subtract）Carry in whole process, long guiding valve 6 passes through two ends
Physics it is spacing come holding position, only two-stage：Fully loaded position and minimum load position, therefore, the regulation of long guiding valve 6, which belongs to, level
Regulation.
Further, in addition to all the way increment of load oil circuit is aided in, the auxiliary increment of load oil circuit is provided with a pilot solenoid valve, works as work
When condition is severe, i.e., when the height pressure difference of the short both sides of guiding valve 5 is smaller, making a concerted effort suffered by short guiding valve 5 is smaller, is now insufficiently resistant to unload
The reaction force of spring 11 is carried, short guiding valve 5 can not increment of load；At this moment pilot solenoid valve is opened, makes the first compression work intracavitary
Gas circuit connected with gases at high pressure, while opening the first increment of load magnetic valve, under high pressure effect, promote piston 10 to described second
Compression work chamber is moved, and the oil of the second compression work intracavitary is let out to low pressure, so that short guiding valve 5 can under low-pressure ratio operating mode
With normal increment of load.
Further, in addition to a controlling organization, institute's displacement sensors 9 send the position of short guiding valve 5 to control machine
Structure, the controlling organization is according to the position signalling of the short guiding valve 5 received, to control the oil mass for being pressed into or discharging in logical hydraulic fluid port,
So as to realize the position control of short guiding valve 5.
Symmetrical expression volumetric void fraction and the contrast of asymmetric volumetric void fraction compressor efficiency by inputoutput test；Its method of testing is as follows：
The symmetrical expression volumetric void fraction compressor that an interior volume specific ratio is 3.0 is taken, in 1.7 DEG C of operating mode evaporating temperature;Condensation temperature
51.7℃;5 DEG C of degree of supercooling;5 DEG C of the degree of superheat.Test performance parameter during its 100%, 75%, 50% and 25% load.
The asymmetric volumetric void fraction compressor for taking an interior volume specific ratio to be 3.0, tests it 100% under identical operating mode,
Performance parameter during 75%, 62.5%, 50%, 25% and 12.5% load.
Experiment is implemented：
Two compressor model machines are taken in the test platform approved through national compressor cooling equipment quality Supervision Test Center
Tested, obtain experimental data and analyzed.
Measured result such as table 1 below：
Test data analyzer is contrasted：
Asymmetric volumetric void fraction is contrasted with symmetrical expression volumetric void fraction, and COP is identical at full capacity；Asymmetric during 50% load
Volumetric void fraction is than symmetrical expression volumetric void fraction efficiency high 24%；Asymmetric volumetric void fraction is imitated than symmetrical expression volumetric void fraction during 75% load
Rate is high by 4%, see the table below shown in 2.
Thus, by taking 200RT points of cold groups as an example, the IPLV of symmetrical expression Volume Control Technology is used for 3.3；Using symmetrical expression
The IPLV of Volume Control Technology is up to 3.7.With whole year operation 245 days, calculate within daily 8 hours, then whole year can power saving：
200*3.517/3.3*8*245-200*3.517/3.7*8*245=55,146 kilowatt hours.Therefore, year economic benefit
More than 50,000 yuan.
Above-described embodiment is only to illustrate technical concepts and features of the present utility model, and its object is to allow be familiar with technique
Personage can understand content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.
All equivalent change or modifications made according to the utility model Spirit Essence, should all cover protection domain of the present utility model it
It is interior.
Claims (6)
1. a kind of asymmetric side valve type single screw rod refrigeration compressor, it is characterised in that：Including an electric rotating machine, a compressor cylinder
Body, a screw rotor, two spider pieces, a short guiding valve and a long guiding valve, the electric rotating machine include a motor stator, an electricity
Machine rotor and a main shaft, the main shaft are fixedly connected with the screw rotor, described two star-wheels respectively with screw rotor
It is meshed, the long guiding valve is using there is level regulation, and the short guiding valve uses step-less adjustment, and the short guiding valve and long guiding valve are set respectively
On compressor casing at the by-pass port of both sides；
A compression cylinder is provided with for the short guiding valve, the compression cylinder has two compression work chambers, two compression work chambers
Respectively the first compression work chamber and the second compression work chamber, the first compression work chamber compress work towards compression cylinder cap side, second
Make chamber towards short guiding valve side, connect and be cased with a piston, the piston between the first compression work chamber and the second compression work chamber
One unloaded spring;The first hydraulic fluid port is offered in the second compression work chamber, Liang Ge branches oil circuit is provided with for first hydraulic fluid port,
First branch's oil circuit connects the main oil-feed port of the compressor by one first off-load magnetic valve, and second branch's oil circuit passes through one the
One increment of load magnetic valve connects the suction end of the compressor, and the piston of the compression cylinder is threadedly coupled with the short guiding valve, short cunning
The valve other end is provided with a displacement transducer；
A hydraulic cylinder is provided with for the long guiding valve, the long guiding valve is located in hydraulic cylinder, as the piston of hydraulic cylinder by hydraulic pressure
Cylinder is divided into two working chambers；The hydraulic cylinder has two hydraulic fluid ports towards the hydraulic intracavitary of compression cylinder cap side, and respectively the
Two hydraulic fluid ports and the 3rd hydraulic fluid port, wherein, the second hydraulic fluid port is oil-feed port, and the oil-feed port passes through one second off-load magnetic valve and the compression
The main oil-feed port connection of machine, the 3rd hydraulic fluid port is drain tap, and the drain tap passes through one second increment of load magnetic valve and the compressor
Suction end is connected.
2. asymmetric side valve type single screw rod refrigeration compressor according to claim 1, it is characterised in that：For the short cunning
Valve, offers one first gas port on the first compression work chamber, and first gas port leads to the suction end of the compressor.
3. asymmetric side valve type single screw rod refrigeration compressor according to claim 2, it is characterised in that：For the short cunning
Valve, in addition to increment of load oil circuit is aided in all the way, the auxiliary increment of load oil circuit is provided with a pilot solenoid valve, when short guiding valve operating mode is severe
When, i.e., when the height pressure difference of short guiding valve both sides is smaller, making a concerted effort suffered by short guiding valve is smaller, is now insufficiently resistant to the unloading bullet
The reaction force of spring, short guiding valve can not increment of load；At this moment open pilot solenoid valve, make the gas circuit of the first compression work intracavitary with
Gases at high pressure are connected, while opening the first increment of load magnetic valve, under high pressure effect, promote piston to the second compression work chamber
It is mobile, the oil of the second compression work intracavitary is let out to low pressure, so that short guiding valve can normal increment of load under low-pressure ratio operating mode.
4. according to any described asymmetric side valve type single screw rod refrigeration compressors of claim 1-3, it is characterised in that：Also include
One controlling organization, institute's displacement sensors send the position of short guiding valve to the controlling organization, and the controlling organization is according to connecing
The position signalling of the short guiding valve received, to control the oil mass for being pressed into or discharging in the first hydraulic fluid port, so as to realize the position of short guiding valve
Control.
5. asymmetric side valve type single screw rod refrigeration compressor according to claim 3, it is characterised in that：For the compression
Cylinder, the first increment of load magnetic valve correspondence draining is set, and the first off-load magnetic valve correspondence oil-feed is set, the auxiliary increment of load
Magnetic valve correspondence high pressure admission is set.
6. asymmetric side valve type single screw rod refrigeration compressor according to claim 1, it is characterised in that：For the hydraulic pressure
Cylinder, the second increment of load magnetic valve correspondence draining is set, and the second off-load magnetic valve correspondence fuel feeding is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026384.3U CN206419206U (en) | 2017-01-10 | 2017-01-10 | Asymmetric side valve type single screw rod refrigeration compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720026384.3U CN206419206U (en) | 2017-01-10 | 2017-01-10 | Asymmetric side valve type single screw rod refrigeration compressor |
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| Publication Number | Publication Date |
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| CN206419206U true CN206419206U (en) | 2017-08-18 |
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ID=59573768
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720026384.3U Active CN206419206U (en) | 2017-01-10 | 2017-01-10 | Asymmetric side valve type single screw rod refrigeration compressor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108035877A (en) * | 2018-01-15 | 2018-05-15 | 福建雪人股份有限公司 | A kind of helical-lobe compressor internal volume rate regulating mechanism |
| CN108644116A (en) * | 2018-07-13 | 2018-10-12 | 麦克维尔空调制冷(苏州)有限公司 | Screw compressor system and heat-exchange system comprising the screw compressor system |
| CN111183288A (en) * | 2017-10-30 | 2020-05-19 | 大金工业株式会社 | Screw compressor |
| CN113062862A (en) * | 2021-04-22 | 2021-07-02 | 江西奥夫科压缩机有限公司 | Single screw compressor with long service life |
-
2017
- 2017-01-10 CN CN201720026384.3U patent/CN206419206U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111183288A (en) * | 2017-10-30 | 2020-05-19 | 大金工业株式会社 | Screw compressor |
| CN111183288B (en) * | 2017-10-30 | 2021-03-26 | 大金工业株式会社 | Screw compressor |
| CN108035877A (en) * | 2018-01-15 | 2018-05-15 | 福建雪人股份有限公司 | A kind of helical-lobe compressor internal volume rate regulating mechanism |
| CN108644116A (en) * | 2018-07-13 | 2018-10-12 | 麦克维尔空调制冷(苏州)有限公司 | Screw compressor system and heat-exchange system comprising the screw compressor system |
| CN113062862A (en) * | 2021-04-22 | 2021-07-02 | 江西奥夫科压缩机有限公司 | Single screw compressor with long service life |
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