CN107614879A - Helical-lobe compressor and the refrigerating circulatory device for possessing the helical-lobe compressor - Google Patents
Helical-lobe compressor and the refrigerating circulatory device for possessing the helical-lobe compressor Download PDFInfo
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- CN107614879A CN107614879A CN201580080054.6A CN201580080054A CN107614879A CN 107614879 A CN107614879 A CN 107614879A CN 201580080054 A CN201580080054 A CN 201580080054A CN 107614879 A CN107614879 A CN 107614879A
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- rudimentary
- discharge chambe
- guiding valve
- advanced
- compression
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- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The helical-lobe compressor of the present invention has：Housing, the housing have the rudimentary compression unit of compressed gas and the advanced compression portion of the gas further compressed by rudimentary compressing section compresses；Rotary shaft, the rotary shaft penetrates rudimentary compression unit and advanced compression portion, and rotatably can configure in housing；Rudimentary screw rotor, the rudimentary screw rotor are installed on the rotary shaft in rudimentary compression unit, and in outer peripheral face formed with multiple screw slots；A pair of rudimentary gate rotors, the teeth portion that the pair of rudimentary gate rotor engages formed with the screw slot with rudimentary screw rotor, and form a pair of rudimentary discharge chambes between the screw slot and the housing of rudimentary screw rotor；And a pair of rudimentary guiding valves, the pair of rudimentary spool valve configuration is in a pair of rudimentary discharge chambes, and by moving in the axial direction of the rotation shaft, so as to adjust the opportunity that gas is discharged from rudimentary discharge chambe, a pair of rudimentary guiding valves are arranged respectively at different positions in the axial direction of the rotation shaft.
Description
Technical field
The present invention relates to helical-lobe compressor, more specifically, is related to the screw rod pressure for the guiding valve for possessing adjustment operating compression ratio
Contracting machine and the refrigerating circulatory device for possessing the helical-lobe compressor.
Background technology
In the past, helical-lobe compressor (being more specifically single screw compressor) possessed with spiral helicine spiral shell on the rotary shaft
The screw rotor of bar groove, at least one gate rotor (gate rotor) for making to have teeth groove in periphery is chimeric with screw rotor, and
They are housed in housing, so as to form discharge chambe.Along with the rotation of rotary shaft, the volume of discharge chambe reduces, so as to press
Contracting gas (with reference to patent document 1,2).
The compression mechanism of single screw compressor substantially has two kinds, the double-gate for making two gate rotors chimeric with screw rotor be present
Rotor mode and make a gate rotor single gate rotor mode chimeric with screw rotor.
In double-gate rotor mode, two discharge chambes are formed respectively opposite to each other centered on the rotary shaft of screw rotor.By
The opposite position of rotary shaft of screw rotor is located relative in the discharge chambe that gas pressure is acted on, so acting on rotation
The gas load of axle is cancelled out each other.
On the other hand, in single gate rotor mode, discharge chambe is formed in the side of the rotary shaft of screw rotor.In the manner
In, due to configuring discharge chambe opposite to each other relative to the rotary shaft of screw rod not as double-gate rotor mode, so discharge chambe
Gas pressure rotary shaft is acted on from discharge chambe side.
Citation
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2013-92091 publications
Patent document 2：No. 4147891 publications of Japanese Patent No.
The content of the invention
The invention problem to be solved
In the two level helical-lobe compressor that compression process is divided into two with rudimentary compression unit and advanced compression portion, rudimentary
Compression unit is known using the compressor of single gate rotor mode using double-gate rotor mode and in advanced compression portion.
In such two level helical-lobe compressor, as noted previously, as in rudimentary compression unit, gas pressure is acted on
Discharge chambe be located relative to the opposite position of rotary shaft of screw rod, so the gas load for acting on rotary shaft is cancelled out each other,
The flexure of the rotary shaft of screw rod is smaller.
But as described above, in advanced compression portion, the gas pressure of discharge chambe is made from discharge chambe side to rotary shaft
With.That is, in advanced compression portion, row is increased to because discharge chambe configures the gas pressure in the side of rotary shaft and discharge chambe
Go out pressure, in contrast, the gas pressure of the opposite side of discharge chambe is the environment of intermediate pressure, so their differential pressure action in
Rotary shaft.Therefore, in advanced compression portion, due to the gas load as caused by the pressure difference, the opposite side of axial rotary discharge chambe is scratched
Song, flexure quantitative change are big.
Further, since screw rotor is configured in series, so the length of the rotary shaft of two level helical-lobe compressor compares single level machine
Rotary shaft length length, it is bigger than single level machine relative to the deflection of gas load.Therefore, the deflection of rotary shaft further expands
Greatly.
When rotating shaft flexing in advanced compression portion, rotary shaft also produces flexure in rudimentary compression unit, in rudimentary pressure
In the discharge chambe (the discharge chambe side in advanced compression portion) of one side in contracting portion, the internal clearance between screw rotor and housing expands.
In addition, in the discharge chambe (the opposite side with the discharge chambe of advanced side) of the opposing party in rudimentary compression unit, screw rotor and shell
Internal clearance between body reduces.
Then, due in a pair of discharge chambes of rudimentary compression unit internal clearance it is unequal, so the internal pressure of each discharge chambe
Passage it is different.That is, the discharge chambe for the side that the internal clearance between screw rotor and housing expands is due in compression process
The increase of internal leakage amount, so compared with the discharge chambe of the opposing party, internal pressure rises.
Therefore, because the internal pressure of a pair of discharge chambes of rudimentary compression unit is unequal, so the operating of helical-lobe compressor be present
The problem that efficiency declines.
The present invention makes to solve above-mentioned problem, even if its object is to provide a kind of inside produced in each discharge chambe
Unequalization in gap, it can also carry out the helical-lobe compressor of high efficiency operating and possess the kind of refrigeration cycle dress of the helical-lobe compressor
Put.
For solving the scheme of problem
The helical-lobe compressor of the present invention has：Housing, the housing have compressed gas rudimentary compression unit and further
The advanced compression portion of the gas compressed by rudimentary compressing section compresses；Rotary shaft, the rotary shaft penetrate rudimentary compression unit and height
Level compression unit, and rotatably can configure in housing；Rudimentary screw rotor, the rudimentary screw rotor are installed on rudimentary compression
Rotary shaft in portion, and in outer peripheral face formed with multiple screw slots；A pair of rudimentary gate rotors, the pair of rudimentary gate rotor are formed
There is the teeth portion that the screw slot with rudimentary screw rotor engages, and formed a pair between the screw slot and housing of rudimentary screw rotor
Rudimentary discharge chambe；And a pair of rudimentary guiding valves, the pair of rudimentary spool valve configuration is in a pair of rudimentary discharge chambes, and by rotating
The axle of axle moves up, and so as to adjust the opportunity that gas is discharged from rudimentary discharge chambe, a pair of rudimentary guiding valves are in the axial direction of rotary shaft
On be arranged respectively at different positions.
The effect of invention
Even if in accordance with the invention it is possible to realize a kind of unequalization for producing the internal clearance in each discharge chambe, also can
Carry out the helical-lobe compressor of high efficiency operating and possess the refrigerating circulatory device of the helical-lobe compressor.
Brief description of the drawings
Fig. 1 is the general profile chart of the two level single screw compressor 100 of embodiment 1.
Fig. 2 is the A-A sectional views in Fig. 1 of the rudimentary compression unit 10 of embodiment 1.
Fig. 3 is the B-B sectional views in the Fig. 1 in the advanced compression portion 20 of embodiment 1.
Fig. 4 is the stereogram of the rudimentary guiding valve 13 of embodiment 1.
Fig. 5 is to show the first discharge chambe and the second discharge chambe in the rudimentary compression unit of conventional two level single screw compressor
Pressure passage explanation figure.
Fig. 6 is the first discharge chambe in the rudimentary compression unit 10 for the two level single screw compressor 100 for showing embodiment 1
The explanation figure of 15a and the second discharge chambe 15b pressure passage.
Fig. 7 is the stereogram of the rudimentary guiding valve 213 of embodiment 2.
Embodiment
Hereinafter, referring to the drawings etc., illustrate the helical-lobe compressors of embodiments of the present invention.Herein, in all of the figs,
The part for marking same reference numerals is identical or suitable with its part, and this is common in the full text of specification.And
And the form of the inscape expressed by specification full text is eventually example, is not limited to these records.
Hereinafter, illustrate the structure of two level single screw compressor 100, the two level single screw compressor 100 be possess it is rudimentary
One of the helical-lobe compressor of the motor part 2 of compression unit 10, advanced compression portion 20 and the above-mentioned each compression unit of driving.
Embodiment 1.
First, the structure of the two level single screw compressor 100 of embodiment 1 is illustrated.
Fig. 1 is the general profile chart of the two level single screw compressor 100 of embodiment 1.
Two level single screw compressor 100 is roughly divided into compression unit 1 and motor part 2.
<Compression unit 1>
Compression unit 1 be separated into be accommodated in cylindrical shape housing 100a in rudimentary compression unit 10 and advanced compression portion 20
Mode form.In the housing 100a of cylindrical shape central axial portion, the rudimentary compression unit 10 of insert and advanced compression are configured with
The rotary shaft 3 in portion 20.Flowed from the low-pressure gas that housing 100a is externally supplied by the first suction inlet 10a and the second suction inlet 10b
Enter to rudimentary compression unit 10, after first compression, be flowed into advanced compression portion 20 and by second-compressed, turn into gases at high pressure and send
Go out to outside housing 100a.
(rudimentary compression unit 10)
Fig. 2 is the A-A sectional views in Fig. 1 of the rudimentary compression unit 10 of embodiment 1.
Rudimentary compression unit 10, which uses, makes two the first rudimentary rudimentary gate rotor 12b of gate rotor 12a and second and rudimentary screw rod
The chimeric double-gate rotor mode of rotor 11.Rudimentary screw rotor 11 is in outer peripheral face formed with multiple spiral helicine screw slot 11a.
Rudimentary screw rotor 11 is accommodated in a manner of its outer peripheral face contacts with housing 100a columned inwall 100b
In housing 100a.
The first rudimentary rudimentary gate rotor 12b of gate rotor 12a and second of rudimentary compression unit 10 are with rudimentary screw rotor 11
The mode for radially clipping rudimentary screw rotor 11 be configured with two opposite to each other.It is low in the first rudimentary gate rotor 12a and second
Level gate rotor 12b peripheral part is formed with multiple teeth portion.
These the first rudimentary rudimentary gate rotor 12b of gate rotor 12a and second teeth portion and the screw rod of rudimentary screw rotor 11
Groove 11a is engaged, and the space between housing 100a inwall 100b forms rudimentary discharge chambe 15.
As shown in Fig. 2 rudimentary discharge chambe 15 is configured opposite to each other centered on rudimentary screw rotor 11, and including low with first
The the first discharge chambe 15a and the second discharge chambe 15b that the level rudimentary gate rotor 12b of gate rotor 12a and second are correspondingly formed.To first
The the first suction inlet 10a and the second suction inlet 10b of discharge chambe 15a and the second discharge chambe 15b supply low-pressure gases are respectively in housing
100a upper sheds.First suction inlet 10a and the second suction inlet 10b is opposite with rotary shaft 3, and in the axial direction of rotary shaft 3, same
One position opening.
Rudimentary guiding valve 13, the rudimentary guiding valve 13 are configured with the first discharge chambe 15a and the second discharge chambe 15b outer circumferential side
Opportunity of the adjustment discharge in each gas for compressing interior compression.Rudimentary guiding valve 13 includes pressing with the first discharge chambe 15a and second
The first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second that contracting room 15b is respectively correspondingly configured.
As shown in Fig. 2 the first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second are accommodated in recess 100c, the recess
100c is formed at housing 100a inwall 100b.Recess 100c is the length with the arc-shaped axially parallel formed of rotary shaft 3
Groove portion.
The first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second inner peripheral surface 40 and the housing for housing rudimentary screw rotor 11
100a inwall 100b forms same arc surface.In addition, the recess 100c of the outer peripheral face 41 of rudimentary guiding valve 13 and housing 100a has
There is same arc surface.
In addition, the first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second are connected via bar 33 with rudimentary drive mechanism 14.It is low
Level drive mechanism 14 is, for example, the drive mechanism being made up of cylinder body and piston, by making working fluid flow into cylinder body and making its stream
Go out, so as to which piston slides in cylinder body, rudimentary guiding valve 13 is moved parallel to rotary shaft 3 via bar 33.
It should be noted that, although the example that rudimentary drive mechanism 14 is made up of cylinder body and piston is shown, but as long as energy
Rudimentary guiding valve 13 is moved parallel to rotary shaft 3, other drive mechanisms can be used.
(advanced compression portion 20)
Fig. 3 is the B-B sectional views in the Fig. 1 in the advanced compression portion 20 of embodiment 1.
Advanced compression portion 20, which uses, makes an advanced gate rotor 22 single gate rotor mode chimeric with advanced screw rotor 21.
Advanced screw rotor 21 is in peripheral part formed with multiple spiral helicine screw slot 21a.
Advanced screw rotor 21 is accommodated in a manner of its outer peripheral face contacts with housing 100a columned inwall 100b
In housing 100a.
The advanced gate rotor 22 in advanced compression portion 20 configures one in the side of the radial direction of advanced screw rotor 21.Advanced
The peripheral part of gate rotor 22 is formed with multiple teeth portion.
The teeth portion of the advanced gate rotor 22 engages with the screw slot 21a of advanced screw rotor 21, in the circle with housing 100a
Space between the inwall 100b of column forms advanced compression room 25.With rotary shaft 3 it is axially vertical radially, advanced pressure
Contracting room 25 and the first discharge chambe 15a of rudimentary compression unit 10 are configured in the same direction.Here same direction refers at least exist
The discharge chambe 15a of advanced compression room 25 and first state is configured with by the side of the imaginary plane of rotary shaft 3.
In advanced compression room 25, corresponding advanced guiding valve 23 is configured with.
As shown in figure 3, in the same manner as rudimentary guiding valve 13, the advanced guiding valve 23 is accommodated in recess 100c, the recess
100c is formed at housing 100a inwall 100b.Recess 100c is the length with the arc-shaped axially parallel formed of rotary shaft 3
Groove portion.
The outer peripheral face of the inner peripheral surface 40 of advanced guiding valve 23 and advanced screw rotor 21 (houses the housing of advanced screw rotor 21
100a inwall 100b) form same arc surface.In addition, the recess 100c of the outer peripheral face 41 of advanced guiding valve 23 and housing 100a has
There is same arc surface.
In addition, advanced guiding valve 23 is connected via bar 33 with advanced drive mechanism 24.It is high in the same manner as rudimentary drive mechanism 14
The structure of level drive mechanism 24 is, for example, the drive mechanism being made up of cylinder body and piston, by making working fluid flow into cylinder body simultaneously
Make its outflow, so as to which piston slides in cylinder body, advanced guiding valve 23 is moved parallel to rotary shaft 3 via bar.
<The structure of guiding valve 13,23>
Herein, the shape of rudimentary guiding valve 13 and advanced guiding valve 23 is described in detail.
Fig. 4 is the stereogram of the rudimentary guiding valve 13 of embodiment 1.
As shown in figure 4, rudimentary guiding valve 13 is made up of valve body 30, guide portion 31, linking part 32 and bar 33.Valve body 30 with
Space between guide portion 31 turns into opening portion 34, and as the medium pressure gas refrigerant outflow from rudimentary discharge chambe 15
Stream.As described above, valve body 30 and the inner peripheral surface of guide portion 31 40 have the housing 100a with housing rudimentary screw rotor 11
Inwall 100b turn into same arc surface cross sectional shape.In addition, the valve body 30 and outer peripheral face of guide portion 31 41 has and shell
Body 100a recess 100c turns into the cross sectional shape of same arc surface.Linking part 32 cuts for smaller than valve body 30 and guide portion 31
Face shape is for example cylindric.
The basic structure of advanced guiding valve 23 is identical with rudimentary guiding valve 13.But due to advanced compression portion 20 and rudimentary compression
The operating pressure in portion 10 is than different, so the optimum shape of the valve body 30 of advanced guiding valve 23 can be set to rudimentary guiding valve 13 not
Same design.
Rudimentary guiding valve 13 and advanced guiding valve 23 are configured to：In housing 100a recess 100c, parallel with rotary shaft 3
Slid freely on axial direction.
(function of guiding valve 13,23)
As a kind of means of the energy-saving in single screw compressor, following technology is disclosed：Using the guiding valve 13,23,
Make internal capacity than variable.Internal capacity is than being defined as the compression chamber volume (being designated as Vs below) when suction is completed with that will start
Discharge the ratio between the compression chamber volume (being designated as Vd below) before process (=Vs ÷ Vd).Internal capacity ratio is adjusted, so that according to low
Energy efficiency maximizes under the operating pressure ratio that pressure and high pressure are obtained.
The position of the guiding valve on rotation direction of principal axis by controlling screw rotor, is discharged so as to change gas from compression process
Opportunity adjust internal capacity ratio.It should be noted that compression process is defined as：Complete to be flowed into pressure from suction inlet from gas
(position) plays (position) at the time of gas compressed is discharged to outside discharge chambe from the opening portion 34 of guiding valve at the time of contracting room
Untill time or rotary shaft 3 axial direction on length.
Similarly, in the two level single screw compressor 100 of embodiment 1, internal capacity ratio can also be adjusted to make fortune
Turn pressure ratio optimization, so as to realize energy-conservation.
Due to being used to maximize energy efficiency in 20 respective compression stage of rudimentary compression unit 10 and advanced compression portion
Optimal internal capacity than different, so two level single screw compressor 100 is matched somebody with somebody in rudimentary compression unit 10, advanced compression portion 20 respectively
Put the guiding valve 13,23 for being capable of adjustment position.
<The first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second configuration>
As a pair of valves, rudimentary guiding valve 13 is made up of the first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second.First is rudimentary
Guiding valve 13a is supported by the first bar 33a, and accordingly configures the outer peripheral face in rudimentary screw rotor 11 with the first discharge chambe 15a.Separately
Outside, the second rudimentary guiding valve 13b is supported by the second bar 33b, and is accordingly configured in rudimentary screw rotor 11 with the second discharge chambe 15b
Outer peripheral face.
First bar 33a and the second bar 33b are connected with web 17, and the web 17 is configured in housing 100a one end
Side.Web 17 is connected with rudimentary drive mechanism 14, and with the mobile linkage of rudimentary drive mechanism 14 and with rotary shaft 3 abreast
It is mobile.Then, the first bar 33a and the second bar 33b rudimentary guiding valve 13b of the first rudimentary guiding valve 13a and second while sliding are installed on
It is dynamic.
Herein, the first bar 33a and the second bar 33b length are compared, the first bar 33a is with longer than the second bar 33b
Length form.Then, in the position relationship on the direction parallel with rotary shaft 3, the first rudimentary guiding valve 13a and second is rudimentary
Guiding valve 13b is configured in different positions.That is, the first rudimentary guiding valve 13a configuration the first discharge chambe 15a low-pressure gas first
Second suction inlet 10b of low-pressure gas of the rudimentary guiding valve 13a of suction inlet 10a and first distance than the second discharge chambe 15b and
The short position of two rudimentary guiding valve 13b distance the, so that compression process (axial direction of time or rotary shaft 3 in rudimentary compression unit 10
On length) guiding valve 13b more rudimentary than second be short.More specifically, be configured to the first rudimentary guiding valve 13a first opening 34a with
First suction inlet 10a distance guiding valve 13b more rudimentary than second the second opening 34b and the second suction inlet 10b distance is short.
Due to rudimentary compression unit 10 the first discharge chambe 15a with rotary shaft 3 it is axially vertical radially with advanced pressure
The advanced compression room 25 in contracting portion 20 configures in the same direction, so being configured to the first discharge chambe 15a of the side of advanced compression room 25
Compression process it is shorter than the compression process of the second opposite discharge chambe 15b.
<The action of two level single screw compressor 100>
Then, the action of the two level single screw compressor 100 of embodiment 1 is illustrated.
Two level single screw compressor 100 be used in a manner of closed loop by as the condenser of heat exchanger and evaporator,
Configure the refrigerant loop that the expansion valve pipe arrangement between these heat exchangers is formed by connecting.
The motor part 2 of two level single screw compressor 100 is driven from inverter circuit (inverter circuit) reception
Move signal and start.
Then, as shown in figure 1, via evaporator from housing 100a low-pressure refrigerant gas being externally supplied respectively from
One suction inlet 10a and the second suction inlet 10b is to the first discharge chambe 15a of a pair of discharge chambes as rudimentary compression unit 10 and second
Discharge chambe 15b is supplied.
Suction to the first discharge chambe 15a and the second discharge chambe 15b low-pressure refrigerant gas is completed on same opportunity,
The gas refrigerant of roughly the same quality is sucked in each discharge chambe.After the completion of suction, with the rotation of rudimentary screw rotor 11,
The volume of each discharge chambe reduces, and internal pressure gradually steps up.
Become by the position in the axial direction of rotary shaft 3 for making to be arranged on the rudimentary guiding valve 13 in each discharge chambe
Change, so as to adjust the opportunity for making the first discharge chambe 15a and the second discharge chambe 15b gas refrigerant be discharged from each discharge chambe.It is low
Level guiding valve 13 is adjusted to the position of multiple grades by special rudimentary drive mechanism 14.In addition it is also possible to it is infinitely to enter
The drive device of row position adjustment, is not limited to multiple grades.
The first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second of embodiment 1 are configured to：It is upper in the axial direction of rotary shaft 3
Difference is put, the first discharge chambe 15a compression process is shorter than the compression process of the second opposite discharge chambe 15b.
That is, following structure is turned into：Compared with the second discharge chambe 15b, the gas refrigeration in the first discharge chambe 15a discharge chambe
Agent is first discharged from discharge chambe.
When gas refrigerant is discharged from discharge chambe, gas refrigerant is flowed out by the opening portion 34 of rudimentary guiding valve.
As shown in figure 1, from the centre that a pair of first discharge chambe 15a of rudimentary compression unit 10 and the second discharge chambe 15b are discharged
The gas refrigerant of pressure is inhaled into advanced compression portion 20 and collected.Advanced compression portion 20 is single gate rotor mode, than inhaling
The gas refrigerant for entering the intermediate pressure of the high pressure of pressure is inhaled into an advanced compression room 25.
Refrigerant in advanced compression room 25 reduces volume and compressed, internal pressure with the rotation of advanced screw rotor 21
Rise.Then, turn into high-pressure gas refrigerant, discharged from the opening portion 34 of advanced guiding valve 23.
The high-pressure gas refrigerant of discharge is flowed into condenser.
During the operating of two level single screw compressor 100, the position adjustment of guiding valve 13,23 is carried out.Carry out guiding valve 13,
During 23 position adjustment, for example, each suction pressure in the rudimentary compression unit 10 of control device detection (not shown) and advanced compression portion 20
Power and each discharge pressure, the speed of motor part 2, according to the optimal internal capacity ratio of its detected value computing.Now, position is utilized
The position that detection means obtain current guiding valve 13,23 is put, the position of guiding valve 13,23 is adjusted to reduce and transport using drive mechanism
Obtained optimal internal capacity than difference, so as to improve energy efficiency.
<The passage of the first discharge chambe 15a and the second discharge chambe 15b of rudimentary compression unit 10 pressure>
Fig. 5 is to show the first discharge chambe and the second discharge chambe in the rudimentary compression unit of conventional two level single screw compressor
Pressure passage explanation figure.
Fig. 6 is the first discharge chambe in the rudimentary compression unit 10 for the two level single screw compressor 100 for showing embodiment 1
The explanation figure of 15a and the second discharge chambe 15b pressure passage.
In Fig. 5 and Fig. 6, the longitudinal axis represents the first discharge chambe 15a and the second discharge chambe 15b internal pressure, and transverse axis represents compression
The time of process or be compressed process rotary shaft 3 axial length.
As described above, with rotary shaft 3 it is axially vertical radially, the advanced compression of two level single screw compressor 100
Room 25 and the first discharge chambe 15a of rudimentary compression unit 10 are configured in the same direction.
The two level list of single gate rotor mode is used using double-gate rotor mode and advanced compression portion 20 in rudimentary compression unit 10
In helical-lobe compressor 100, in advanced compression portion 20, the gas pressure of advanced compression room 25 is carried out from a direction side to rotary shaft 3
Effect.That is, in advanced compression portion 20, because advanced compression room 25 is configured in the side of rotary shaft 3 and advanced compression room 25
Gas pressure is increased to discharge pressure, in contrast, relative to rotary shaft 3, the gas pressure of the opposite side of advanced compression room 25
Power is the environment of intermediate pressure, so their differential pressure action is in rotary shaft 3.Then, in advanced compression portion 20, due to by the pressure
Gas load caused by difference, rotary shaft 3 are bent to the opposite side of advanced compression room 25, and flexure quantitative change is big.
Further, since screw rotor is configured in series, so the rotation shaft length of two level single screw compressor 100 compares single-stage
The rotation shaft length length of machine.Then, it is bigger than single level machine relative to the deflection of gas load.Therefore, the deflection of rotary shaft 3 enters
One step expands.Also, in the case of the refrigerant high using the saturation pressure as R410A, gas load is big, so that
The deflection deformation of rotary shaft 3 expands.
When being bent in the rotary shaft 3 of advanced compression portion 20, rotary shaft 3 also produces flexure in rudimentary compression unit 10, low
In the first discharge chambe 15a (side of advanced compression room 25 on the circumferencial direction of rotary shaft 3) of one side of level compression unit 10, rudimentary spiral shell
Internal clearance between bar rotor 11 and housing 100a expands.In addition, the second discharge chambe of the opposing party in rudimentary compression unit 10
In 15b (side opposite with advanced compression room 25 on the circumferencial direction of rotary shaft 3), rudimentary screw rotor 11 and housing 100a
Between internal clearance reduce.
Then, due to interior in a pair of discharge chambes of rudimentary compression unit 10 (the first discharge chambe 15a and the second discharge chambe 15b)
Portion gap is unequal, so the passage of the internal pressure of each discharge chambe is different.That is, it is interior between rudimentary screw rotor 11 and housing 100a
First discharge chambe 15a of portion's gap enlargement due to the internal leakage amount increase in the first discharge chambe 15a compression process, so
Compared with the second discharge chambe 15b with rudimentary screw rotor 11 with the gap shrinks between housing 100a, internal pressure rises.
In the past, a pair of first rudimentary guiding valve 13a and second for being arranged at the first discharge chambe 15a and the second discharge chambe 15b are low
The opportunity that level guiding valve 13b is opened is identical.Therefore, as shown in figure 5, in the first discharge chambe 15a and the second discharge chambe 15b, compression
Passage in room pressure P compression stage is unequal, and the running efficiency of two level single screw compressor 100 declines.
In addition, as shown in figure 5, due in the first discharge chambe 15a internal pressure easily rise, so can produce more than setting row
Go out the overcompression region of pressure, consume useless energy.
In the two level single screw compressor 100 of embodiment 1, the first rudimentary guiding valve 13a the first bar 33a is with than second
The length of rudimentary guiding valve 13b the second bar 33b length is formed.That is, the first rudimentary guiding valve 13a configurations are in the low of the first discharge chambe 15a
Calm the anger body the rudimentary guiding valve 13a of the first suction inlet 10a and first low-pressure gas of the distance than the second discharge chambe 15b second inhale
The short position of the rudimentary guiding valve 13b of entrance 10b and second distance, so that compression process (time or axle in rudimentary compression unit 10
Upward length) guiding valve 13b more rudimentary than second be short.More specifically, it is configured to the first rudimentary guiding valve 13a the first opening 34a
It is short with the first suction inlet 10a distance guiding valve 13b more rudimentary than second the second opening 34b and the second suction inlet 10b distance.
Therefore, as shown in fig. 6, because the first discharge chambe 15a than the second discharge chambe 15b opens rudimentary guiding valve 13 earlier,
, can be relative to setting discharge pressure equably compressed gas refrigerant so compression indoor pressure P will not excessively rise.
That is, even if unequalization for producing the internal clearance in each discharge chambe can be realized, high efficiency fortune can also be carried out
The two level single screw compressor 100 turned.
In addition, in embodiment 1, due to using same shape in the first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second
The part of shape, so can be manufactured with same mould, processing method, manufacturing cost can be cut down.
<The effect of the helical-lobe compressor of embodiment 1>
Because the helical-lobe compressor of embodiment 1 has：Housing 100a, the housing 100a have the rudimentary of compressed gas
Compression unit 10 and the advanced compression portion 20 for further compressing the gas that have compressed by rudimentary compression unit 10；Rotary shaft 3, the rotation
Axle 3 penetrates rudimentary compression unit 10 and advanced compression portion 20, and can rotatably configure in housing 100a；Rudimentary screw rotor
11, the rudimentary screw rotor 11 is installed on the rotary shaft 3 in rudimentary compression unit 10, and in outer peripheral face formed with multiple screw slots
11a；A pair of rudimentary gate rotors 12, the pair of rudimentary gate rotor 12 are nibbled formed with the screw slot 11a with rudimentary screw rotor 11
The teeth portion of conjunction, and a pair of rudimentary discharge chambes 15 are formed between the screw slot 11a and housing 100a of rudimentary screw rotor 11；And
A pair of rudimentary guiding valves 13, the pair of rudimentary guiding valve 13 are configured at a pair of rudimentary discharge chambes 15, and by the axial direction of rotary shaft 3
Upper movement, so as to adjust the opportunity that gas is discharged from rudimentary compression unit 10, a pair of rudimentary guiding valves 13 divide in the axial direction of rotary shaft 3
Different positions is positioned respectively at, so unequalization that internal clearance is produced in each rudimentary discharge chambe 15 can be realized,
Also the two level single screw compressor 100 of high efficiency operating can be carried out.
Further, since above-mentioned helical-lobe compressor is following structure：Have：Advanced screw rotor 21, the advanced screw rod turn
Son 21 is installed on the rotary shaft 3 in advanced compression room 25, and in outer peripheral face formed with multiple screw slot 21a；And one advanced
Gate rotor 22, the teeth portion that one advanced gate rotor 22 engages formed with the screw slot 21a with advanced screw rotor 21, and
An advanced compression room 25 is formed between the screw slot 21a and housing 100a of advanced screw rotor 21, in the axial direction with rotary shaft 3
Vertically radially, the first discharge chambe 15a of a side of advanced compression room 25 and a pair of rudimentary discharge chambes 15 is configured in same side
Upwards, so following two level single screw compressor 100 can be realized：Even if due to advanced compression room 25 gas pressure and each
Unequalization of internal clearance is produced in rudimentary discharge chambe 15, can also carry out high efficiency operating.
Further, since it is following structure：In above-mentioned helical-lobe compressor, rudimentary discharge chambe 15 has the first discharge chambe 15a
With the second discharge chambe 15b, the second discharge chambe 15b is configured opposite to each other centered on rotary shaft 3 with the first discharge chambe 15a, and one
To rudimentary guiding valve 13 by configuring in the first discharge chambe 15a the first rudimentary guiding valve 13a and configuration the second of the second discharge chambe 15b
Rudimentary guiding valve 13b is formed, in the first discharge chambe 15a and the second discharge chambe 15b each compression process, the first rudimentary guiding valve 13a
The gas in the first discharge chambe 15a is discharged on guiding valve 13b more rudimentary than second early opportunitys, makes the first discharge chambe 15a compression
Process is shorter than the second discharge chambe 15b compression process, thus the compression indoor pressure P in the first discharge chambe 15a will not excessively on
Rise, can be relative to setting discharge pressure equably compressed gas refrigerant.
Further, since above-mentioned helical-lobe compressor is configured to：First suction inlet 10a of supply gas is in the first discharge chambe 15a
Opening, the second suction inlet 10b of supply gas be open in the second discharge chambe 15b, and the first rudimentary guiding valve 13a is with making the first compression
First opening 34a of the gas discharge in the 15a of room, the second rudimentary guiding valve 13b, which has, discharges the gas in the second discharge chambe 15b
The second opening 34b, the first suction inlet 10a and the first opening 34a distance be open 34b than the second suction inlet 10b and second
Apart from short, so the compression indoor pressure P in the first discharge chambe 15a will not excessively rise, can be relative to setting discharge pressure
Equably compressed gas refrigerant.
Further, since above-mentioned helical-lobe compressor is configured to possess the first rudimentary rudimentary guiding valve 13b of guiding valve 13a and second of driving
Rudimentary drive mechanism 14, the first rudimentary guiding valve 13a is connected via the first bar 33a with rudimentary drive mechanism 14, the second rudimentary cunning
Valve 13b is connected via the second bar 33b with rudimentary drive mechanism 14, axle of the length in the first bar 33a axial direction than the second bar 33b
Upward length length, so the compression indoor pressure P in the first discharge chambe 15a will not excessively rise, it can be arranged relative to setting
Compressed gas refrigerant with going out equalization of pressure.
Embodiment 2.
In the two level single screw compressor 100 of embodiment 2, due to the construction of rudimentary guiding valve 13 and the length of each bar 33
It is different from embodiment 1, so mainly being illustrated to this respect.
Fig. 7 is the stereogram of the rudimentary guiding valve 213 of embodiment 2.
In embodiment 2, in the first discharge chambe 15a and the second discharge chambe 15b of rudimentary compression unit 10 is configured
The one rudimentary rudimentary guiding valve 213b of guiding valve 213a and second shape is different from the rudimentary guiding valve 13 of embodiment 1.
Specifically, in the first rudimentary rudimentary guiding valve 213b of guiding valve 213a and second shown in Fig. 7, valve body 30 is with drawing
That leads the ultimate range W1 in portion 31 is sized and configured to difference.Compared with the rudimentary guiding valve 13 of embodiment 1, each chi of valve body 30
It is very little not change.
In addition, the first rudimentary rudimentary guiding valve 213b of guiding valve 213a and second total length L and inclining for valve body 30 shown in Fig. 7
Inclined portion 30a height H and width W is same size.
Therefore, when changing ultimate range W1, the width W2 of guide portion 31 can be changed, and change the broad-ruler of opening portion 34
It is very little.
In the rudimentary guiding valve of embodiment 2, the first discharge chambe 15a the first rudimentary guiding valve 213a maximum will be arranged at
Distance W1 is set as that the ultimate range W1 more rudimentary guiding valve 213b than be arranged at the second discharge chambe 15b second is long.
Then, for the width dimensions of opening portion 34, the first rudimentary guiding valve 213a the first opening 34a is more rudimentary than second
Guiding valve 213b the second opening 34b is big.
In addition, in the same manner as the rudimentary guiding valve 13 of embodiment 1, possess bar 33 in one end of rudimentary guiding valve 213, but
The length of each bar 33 is same size in the one rudimentary rudimentary guiding valve 213b of guiding valve 213a and second.
Second due to the first rudimentary guiding valve 213a the first opening 34a width dimensions guiding valve 213b more rudimentary than second opens
Mouth 34b width dimensions are big, so opening rudimentary guiding valve 213 earlier than the second discharge chambe 15b as the first discharge chambe 15a
Structure.That is, the length on the time of compression process of the first discharge chambe 15a in the axial direction of rotary shaft 3 or the axial direction of compression process
The length spent in the time of compression process or the axial direction of compression process than the second discharge chambe 15b is short.
More specifically, it is configured to the first rudimentary guiding valve 213a the first opening 34a and the first suction inlet 10a distance ratio
Second rudimentary guiding valve 213b the second opening 34b and the second suction inlet 10b distance is short.
<The effect of the helical-lobe compressor of embodiment 2>
In the helical-lobe compressor of embodiment 2, the first rudimentary guiding valve 213a, which has, arranges the gas in the first discharge chambe
The first the opening 34a, the second rudimentary guiding valve 213b gone out has the second opening 34b for discharging the gas in the second discharge chambe 15b,
The first opening 34a length in the axial direction of rotary shaft 3 is configured to than the second opening 34b in the axial direction of rotary shaft 3
Length is grown.That is, the first rudimentary guiding valve 13a the first opening 34a is open to the distance change of the first suction inlet 10a with low-pressure gas
Short position, so that second of length guiding valve 13b more rudimentary than second in the axial direction of compression process in rudimentary compression unit 10 opens
Mouth 34b is short.
Then, the first discharge chambe 15a the first rudimentary guiding valve 13a is configured at than being configured at the of the second discharge chambe 15b
Opportunity early two rudimentary guiding valve 13b discharges the gas in the first discharge chambe 15a.
Therefore, can be relative to as shown in fig. 6, the compression indoor pressure P in the first discharge chambe 15a will not excessively rise
Set discharge pressure equably compressed gas refrigerant.
That is, even if unequalization for producing the internal clearance in each discharge chambe can be realized, high efficiency fortune can also be carried out
The two level single screw compressor 100 turned.
The explanation of reference
1 compression unit, 2 motor parts, 3 rotary shafts, 10 rudimentary compression units, the suction inlets of 10a first, the suction inlets of 10b second, 11
Rudimentary screw rotor, 11a screw slots, 12 rudimentary gate rotors, the first rudimentary gate rotors of 12a, the second rudimentary gate rotors of 12b, 13 is low
Level guiding valve, the first rudimentary guiding valves of 13a, the second rudimentary guiding valves of 13b, 14 rudimentary drive mechanisms, 15 rudimentary discharge chambes, 15a first are pressed
Contracting room, the discharge chambes of 15b second, 17 webs, 20 advanced compression portions, 21 advanced screw rotors, 21a screw slots, 22 advanced locks turn
Son, 23 advanced guiding valves, 24 advanced drive mechanisms, 25 advanced compression rooms, 30 valve bodies, 30a rakes, 31 guide portions, 32 link
Portion, 33 bars, the bars of 33a first, the bars of 33b second, 34 opening portions, 34a first are open, and 34b second is open, 40 inner peripheral surfaces, 41 peripheries
Face, 100 two level single screw compressors, 100a housings, 100b inwalls, 100c recesses, 213 rudimentary guiding valves, the first rudimentary cunnings of 213a
Valve, the second rudimentary guiding valves of 213b.
Claims (7)
1. a kind of helical-lobe compressor, wherein, the helical-lobe compressor has：
Housing, the gas that the housing has the rudimentary compression unit of compressed gas and further compressed by the rudimentary compressing section compresses
The advanced compression portion of body；
Rotary shaft, the rotary shaft penetrates the rudimentary compression unit and the advanced compression portion, and can rotatably configure in institute
State in housing；
Rudimentary screw rotor, the rudimentary screw rotor are installed on the rotary shaft in the rudimentary compression unit, and in periphery
Face is formed with multiple screw slots；
A pair of rudimentary gate rotors, the tooth that the pair of rudimentary gate rotor engages formed with the screw slot with the rudimentary screw rotor
Portion, and form a pair of rudimentary discharge chambes between the screw slot and the housing of the rudimentary screw rotor；And
A pair of rudimentary guiding valves, the pair of rudimentary spool valve configuration is in the pair of rudimentary discharge chambe, and by the rotary shaft
Axle move up, so as to adjust gas from the opportunity of the rudimentary discharge chambe discharge,
The pair of rudimentary guiding valve is arranged respectively at different positions in the axial direction of the rotary shaft.
2. helical-lobe compressor according to claim 1, wherein, the helical-lobe compressor has：
Advanced screw rotor, the advanced screw rotor are installed on the rotary shaft in the advanced compression portion, and in periphery
Face is formed with multiple screw slots；And
One advanced gate rotor, the tooth that one advanced gate rotor engages formed with the screw slot with the advanced screw rotor
Portion, and an advanced compression room is formed between the screw slot and the housing of the advanced screw rotor,
With the rotary shaft it is axially vertical radially, one in the advanced compression room and the pair of rudimentary discharge chambe
The first discharge chambe configuration of side is in the same direction.
3. helical-lobe compressor according to claim 2, wherein,
The rudimentary discharge chambe has first discharge chambe and the second discharge chambe, second discharge chambe using the rotary shaft as
Center configures opposite to each other with first discharge chambe,
The pair of rudimentary guiding valve is by being configured at the first rudimentary guiding valve of first discharge chambe and being configured at second compression
Second rudimentary guiding valve of room is formed,
In each compression process of first discharge chambe and second discharge chambe, the first rudimentary guiding valve is than described
Two rudimentary guiding valves early opportunity discharges the gas in first discharge chambe, and makes the compression process ratio of first discharge chambe
The compression process of second discharge chambe is short.
4. helical-lobe compressor according to claim 3, wherein,
First suction inlet of supply gas is pressed in the first discharge chambe opening, the second suction inlet of supply gas described second
Contracting room opening,
The first rudimentary guiding valve has the first opening for discharging the gas in first discharge chambe,
The second rudimentary guiding valve has the second opening for discharging the gas in second discharge chambe,
Length between first suction inlet and first opening is configured to open than second suction inlet and described second
Length between mouthful is short.
5. the helical-lobe compressor according to claim 3 or 4, wherein,
The helical-lobe compressor possesses the drive mechanism for driving the first rudimentary guiding valve and the second rudimentary guiding valve,
The first rudimentary guiding valve is connected via the first bar with the drive mechanism,
The second rudimentary guiding valve is connected via the second bar with the drive mechanism,
The length that length on the axial direction of first bar is configured on the axial direction than second bar is long.
6. helical-lobe compressor according to claim 3, wherein,
The helical-lobe compressor possesses the drive mechanism for driving the first rudimentary guiding valve and the second rudimentary guiding valve,
The first rudimentary guiding valve has the first opening for discharging the gas in first discharge chambe,
The second rudimentary guiding valve has the second opening for discharging the gas in second discharge chambe,
The length that length on the axial direction of first opening is configured on the axial direction than the described second opening is long.
7. a kind of refrigerating circulatory device, wherein, the refrigerating circulatory device possesses spiral shell according to any one of claims 1 to 6
Bar compressor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2015/065027 WO2016189648A1 (en) | 2015-05-26 | 2015-05-26 | Screw compressor and refrigeration cycle device comprising screw compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107614879A true CN107614879A (en) | 2018-01-19 |
| CN107614879B CN107614879B (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580080054.6A Active CN107614879B (en) | 2015-05-26 | 2015-05-26 | Helical-lobe compressor and the refrigerating circulatory device for having the helical-lobe compressor |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6430003B2 (en) |
| CN (1) | CN107614879B (en) |
| TW (1) | TWI626380B (en) |
| WO (1) | WO2016189648A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112384700A (en) * | 2018-07-12 | 2021-02-19 | 大金工业株式会社 | Screw compressor |
| CN115244302A (en) * | 2020-03-31 | 2022-10-25 | 大金工业株式会社 | Screw compressor and refrigerating device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019102615A1 (en) * | 2017-11-27 | 2019-05-31 | 三菱電機株式会社 | Single screw compressor and refrigeration cycle device with said single screw compressor |
| WO2020026333A1 (en) * | 2018-07-31 | 2020-02-06 | 三菱電機株式会社 | Screw compressor and refrigeration cycle device |
| WO2021240605A1 (en) * | 2020-05-25 | 2021-12-02 | 三菱電機株式会社 | Two-stage single-screw compressor, and refrigeration and air-conditioning device |
| WO2024075176A1 (en) * | 2022-10-04 | 2024-04-11 | 三菱電機株式会社 | Screw compressor |
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| US7891955B2 (en) * | 2007-02-22 | 2011-02-22 | Vilter Manufacturing Llc | Compressor having a dual slide valve assembly |
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2015
- 2015-05-26 JP JP2017520118A patent/JP6430003B2/en active Active
- 2015-05-26 WO PCT/JP2015/065027 patent/WO2016189648A1/en active Application Filing
- 2015-05-26 CN CN201580080054.6A patent/CN107614879B/en active Active
- 2015-10-06 TW TW104132790A patent/TWI626380B/en active
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| JPS5932689A (en) * | 1982-05-13 | 1984-02-22 | ベルナ−ド ツイメルン | Screw-pinion type positive-displacement machine |
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| CN112384700A (en) * | 2018-07-12 | 2021-02-19 | 大金工业株式会社 | Screw compressor |
| CN112384700B (en) * | 2018-07-12 | 2022-04-05 | 大金工业株式会社 | Screw compressor |
| CN115244302A (en) * | 2020-03-31 | 2022-10-25 | 大金工业株式会社 | Screw compressor and refrigerating device |
| CN115244302B (en) * | 2020-03-31 | 2023-08-04 | 大金工业株式会社 | Screw compressor and refrigerating device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201641822A (en) | 2016-12-01 |
| WO2016189648A1 (en) | 2016-12-01 |
| JP6430003B2 (en) | 2018-11-28 |
| JPWO2016189648A1 (en) | 2017-12-21 |
| CN107614879B (en) | 2019-06-18 |
| TWI626380B (en) | 2018-06-11 |
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