CN105332923B - The anti-reverse-rotation structure of screw compressor and there is its screw compressor - Google Patents
The anti-reverse-rotation structure of screw compressor and there is its screw compressor Download PDFInfo
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- CN105332923B CN105332923B CN201410384030.7A CN201410384030A CN105332923B CN 105332923 B CN105332923 B CN 105332923B CN 201410384030 A CN201410384030 A CN 201410384030A CN 105332923 B CN105332923 B CN 105332923B
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Abstract
The invention provides a kind of anti-reverse-rotation structure of screw compressor and there is its screw compressor.Wherein, the anti-reverse-rotation structure of screw compressor includes：Quiet disk suction hole；Air-breathing groove, the first air intake passage is formed between air entry and air-breathing groove；Anti-reverse component has the first blocking state and the first conducting state, anti-reverse component includes sleeve pipe, the top of sleeve pipe has air inlet corresponding with air entry, first exhaust breach is provided with the side wall of sleeve pipe, the second air intake passage is formed between air inlet and first exhaust breach, anti-reverse component also includes closure part, when anti-reverse component is in the first blocking state, closure part is in the second blocking state for blocking the second air intake passage, when anti-reverse component is in the first conducting state, closure part is on the second conducting state of the second air intake passage.Technical scheme can increase air-breathing circulation area.
Description
Technical field
The present invention relates to screw compressor technical field, in particular to a kind of anti-reverse-rotation structure of screw compressor
And there is its screw compressor.
Background technology
At present, screw compressor utilizes the fixed scroll with scroll wrap to be formed with revolution scroll plate several to selenodont pressure
Contracting chamber, compression chamber volume periodically change with the gyration of revolution scroll plate, realize suction to refrigerant gas-
Compression-discharge process.Stop the moment of driving in drive shaft, revolution scroll plate is in central compressed chamber and the second compression chamber gas
It can be inverted in the presence of tangential force, in order to prevent from turning round eddy spinner disk improper reversion when shutting down, existing scroll compression
Contracting machine is that the technical method for preventing from turning round scroll plate reversion is the air intake passage that quiet disk is blocked after compressor assembly shutdown, is prevented
Scroll plate reversion compressed gas is turned round, the air intake passage of quiet disk refers to the air entry of suction hole with being located on the hole wall of suction hole
Air-breathing groove between refrigerant flow direction.As shown in figure 1, the anti-reverse-rotation structure in screw compressor mainly includes quiet disk suction hole
10 ', the air-breathing groove on the hole wall of quiet disk suction hole and the anti-reverse component in quiet disk suction hole, anti-reverse component bag
Include the sleeve pipe 20 ' of top closure and the compression spring 40 ' being arranged between the bottom of quiet disk suction hole and sleeve pipe 20 ', specific work
It is that after screw compressor starts, refrigerant enters in disk suction hole in meditation from air entry and promotes sleeve pipe to move down, now as process
Compression spring is compressed, and air-breathing circulation area S2 is formed between the top of sleeve pipe and air entry 11 ', refrigerant is through quiet disk suction hole stream
Enter air-breathing groove, dotted arrow is refrigerant flow direction in figure；After screw compressor is closed, sleeve pipe 20 ' returns compression spring 40 '
The lower air intake passage (the alternatively top closure air entry 11 ' of sleeve pipe 20 ') for blocking quiet disk of multiple power effect, is avoided in compression chamber
Gases at high pressure through air entry 11 ' flow out and cause turn round scroll plate reversion.Air-breathing circulation area S2 size is influenceed most
That big is the spacing L2 between the top of sleeve pipe 20 ' and air entry 11 ', because in air-breathing, the side wall of sleeve pipe has blocked air-breathing
The portion of groove, therefore spacing L2 is smaller, causes air-breathing circulation area S2 smaller, and then cause to flow into the cold of compression chamber
Matchmaker's amount is smaller, causes screw compressor refrigerating capacity smaller, has a strong impact on the performance of screw compressor.
The content of the invention
The present invention is intended to provide it is a kind of increase air-breathing circulation area screw compressor anti-reverse-rotation structure and with its
Screw compressor.
To achieve these goals, according to an aspect of the invention, there is provided a kind of anti-reverse knot of screw compressor
Structure, including：Quiet disk suction hole, there is air entry；It is arranged on the hole wall of quiet disk suction hole and along the axial direction of the quiet disk suction hole
The air-breathing groove of extension, forms the first air intake passage between air entry and air-breathing groove；Anti-reverse component, have and block the first air-breathing to lead to
First conducting state of the first air intake passage of first blocking state in road and conducting, anti-reverse component are included with can be in quiet disk air-breathing
The mode that the axle in hole moves up is arranged on the inside of the quiet disk suction hole and along the axially extending sleeve pipe of the quiet disk suction hole,
When anti-reverse component is in the first conducting state, sleeve pipe is located at the lower section of air entry；The top of sleeve pipe has and air entry pair
The air inlet answered, first exhaust breach is provided with the side wall of sleeve pipe, second is formed between air inlet and first exhaust breach and is inhaled
Gas passage, anti-reverse component also include closure part, and when anti-reverse component is in the first blocking state, closure part, which is in, blocks the
Second blocking state of two air intake passages, when anti-reverse component is in the first conducting state, closure part is on the second suction
The second conducting state and first exhaust breach of gas passage radially correspond to air-breathing groove in quiet disk suction hole.
Further, closure part by can facing sleeve be arranged on the sleeve pipe in a manner of the axle of quiet disk suction hole moves up
Inside, the bottom of sleeve pipe is provided with the first limiting section for stopping closure part and extending towards the inside of sleeve pipe, anti-reverse component
Also include：Baffle plate, baffle plate include plate body, and plate body forms closure part, and closure part is in the second conducting state simultaneously by self gravitation
And it is in the second blocking state by the gases at high pressure in screw compressor；First dynamic clamping head and quiet clamping head, the first dynamic clamping head and quiet clamping head pair
The active force of sleeve pipe is towards air entry and anti-reverse component is tended to the first blocking state.
Further, first exhaust breach penetrates on the bearing of trend of sleeve pipe.
Further, anti-reverse component also includes：The annular stop being arranged on the hole wall of quiet disk suction hole, works as counnter attack
When turning component and being in the first blocking state, supported at the top of sleeve pipe in annular stop, the outer peripheral face of sleeve pipe and quiet disk air-breathing
The hole wall in hole is coordinated using gap.
Further, anti-reverse component also includes：Limiting steering part, is arranged on sleeve pipe, limiting steering part limiting boot
Rotate so that first exhaust breach radially corresponds to air-breathing groove in quiet disk suction hole.
Further, limiting steering part includes：Annular stop circle, it is provided with the inner peripheral surface of sleeve pipe and accommodates annular stop circle
Accommodate groove, annular stop circle has in quiet disk suction hole radially through first exhaust breach and stretching into air-breathing groove
Second limiting section in portion, annular stop circle for non-close structure and have installation gap in the circumferential, and installation gap is positioned at appearance
Receive in groove.
Further, anti-reverse component also includes：Baffle plate, baffle plate include plate body and the footpath being arranged on the outer peripheral face of plate body
To expansion board, plate body forms closure part, and closure part is in the second conducting state by self gravitation and relies on screw compressor
Interior gases at high pressure are in the second blocking state, and plate body has convex for the convex of radial dilatation plate in the axial direction of quiet disk suction hole
Go out portion, in the oblique upper of radial dilatation plate, radial dilatation plate stretches into the inside of first exhaust breach, radial dilatation plate for protruding parts
Positioned at the lower section of annular stop circle, when closure part is in the second blocking state, radial dilatation plate is supported on annular stop circle.
Further, the first dynamic clamping head and quiet clamping head is the first axially extending compression spring along quiet disk suction hole, and first presses
The top of contracting spring is fixedly installed on sleeve pipe, and the bottom of quiet disk suction hole is fixedly installed in the bottom of the first compression spring.
Further, multiple second exhaust breach, first exhaust breach and the first exhaust are provided with the side wall of sleeve pipe
The spacing of the adjacent second exhaust breach of breach and the spacing of two neighboring second exhaust breach are respectively less than the notch of air-breathing groove
Spacing, the 3rd air intake passage is each formed between air inlet and each first exhaust breach, when closure part is in the second conducting state
When, each 3rd air intake passage is in the conduction state, and when closure part is in the second blocking state, each 3rd air intake passage is in resistance
Disconnected state.
Further, the second dynamic clamping head and quiet clamping head, the second dynamic clamping head and quiet clamping head pair are provided between closure part and the bottom of sleeve pipe
The active force of sleeve pipe is towards air inlet and closure part is tended to the second blocking state, the top fixed setting of the second dynamic clamping head and quiet clamping head
On closure part, the bottom of the second dynamic clamping head and quiet clamping head is fixedly installed on the bottom of sleeve pipe.
According to another aspect of the present invention, there is provided a kind of screw compressor, including anti-reverse-rotation structure, anti-reverse-rotation structure are
The anti-reverse-rotation structure of above-mentioned screw compressor.
Apply the technical scheme of the present invention, due to when anti-reverse component is in the first conducting state, closure part is in the
Two conducting states and first exhaust breach radially corresponds to air-breathing groove in quiet disk suction hole, therefore, refrigerant can be divided into two strands
Into air-breathing groove, wherein one refrigerant is directly entered air-breathing groove by the region between the top of sleeve pipe and air entry, that is,
Say, it is same with the refrigerant mobile phase described in background technology, and another strand of refrigerant by sleeve pipe top and first exhaust breach it
Between region enter air-breathing groove, that is to say, that the setting of the second air intake passage adds the anti-reverse knot described in background technology
The air-breathing circulation area of structure, and this strand of refrigerant is more compared to the suction refrigerant of the anti-reverse-rotation structure described in background technology
The part gone out.Because when anti-reverse component is in the first blocking state, closure part is in the second blocking state, therefore, it is possible to
Play a part of preventing scroll plate reversion of circling round.As the above analysis, the anti-reverse-rotation structure energy of screw compressor of the invention
Enough increase air-breathing circulation area.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the main view schematic cross-sectional view of anti-reverse-rotation structure in background technology；
Fig. 2 shows the main view schematic cross-sectional view of the embodiment one of the anti-reverse-rotation structure of the screw compressor according to the present invention
(anti-reverse-rotation structure is in the first blocking state)；
Fig. 3 shows main view schematic cross-sectional view when being in the first conducting state of Fig. 2 anti-reverse-rotation structure；
Fig. 4 shows the vertical view schematic cross-sectional view of Fig. 3 anti-reverse-rotation structure；
Fig. 5 shows the assembling schematic front view of the part-structure of Fig. 2 anti-reverse-rotation structure；
Fig. 6 show the A-A of Fig. 5 anti-reverse-rotation structure to schematic cross-sectional view；
Fig. 7 shows the schematic top plan view of Fig. 5 anti-reverse-rotation structure；
Fig. 8 shows the main view schematic cross-sectional view of Fig. 2 anti-reverse-rotation structure middle sleeve (sleeve pipe is laterally disposed)；
Fig. 9 shows that the right side of Fig. 8 sleeve pipe regards schematic cross-sectional view；
Figure 10 shows the vertical view schematic cross-sectional view of baffle plate in Fig. 2 anti-reverse-rotation structure；
Figure 11 shows the schematic cross-sectional view of the B-B direction of Figure 10 baffle plate；
Figure 12 shows the vertical view schematic cross-sectional view of annular spacing collar in Fig. 2 anti-reverse-rotation structure；
Figure 13 shows the group of part-structure in the embodiment two according to the anti-reverse-rotation structure of screw compressor of the invention
Fill main view schematic cross-sectional view；
Figure 14 shows that the main view of the middle sleeve of embodiment three of the anti-reverse-rotation structure of the screw compressor according to the present invention is shown
It is intended to.
Wherein, the reference in above-mentioned figure is as follows：
10th, quiet disk suction hole；11st, air entry；12nd, air-breathing groove；13rd, annular stop；20th, sleeve pipe；21st, air inlet；22、
First exhaust breach；23rd, the first limiting section；24th, accommodate groove；25th, second exhaust breach；26th, spring top；30th, baffle plate；
31st, closure part；32nd, radial dilatation plate；40th, the first dynamic clamping head and quiet clamping head；50th, annular stop circle；51st, the second limiting section；52nd, install
Breach；60th, the second dynamic clamping head and quiet clamping head.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Fig. 2 to Fig. 4 and Fig. 9, the anti-reverse-rotation structure of the screw compressor of embodiment one includes quiet disk suction hole
10th, air-breathing groove 12 and anti-reverse component.Quiet disk suction hole 10 has air entry 11.Air-breathing groove 12 is arranged on quiet disk suction hole 10
On hole wall and along the axially extending of the quiet disk suction hole 10, the first air intake passage is formed between air entry 11 and air-breathing groove 12.It is anti-
Inversion component has the first conducting state of the first air intake passage of the first blocking state for blocking the first air intake passage and conducting, prevents
Inversion component include by can be arranged in a manner of the axle of quiet disk suction hole 10 moves up the quiet disk suction hole 10 inside and
Along the axially extending sleeve pipe 20 of the quiet disk suction hole 10, when anti-reverse component is in the first conducting state, sleeve pipe 20 is located at
The lower section of air entry 11.The top of sleeve pipe 20 has air inlet 21 corresponding with air entry 11, is provided with the side wall of sleeve pipe 20
First exhaust breach 22, forms the second air intake passage between air inlet 21 and first exhaust breach 22, anti-reverse component also includes
Closure part 31, closure part 31 are arranged on the inside of sleeve pipe 20, and closure part 31, which has, blocks the second of the second air intake passage to block shape
Second conducting state of the second air intake passage of state and conducting, when anti-reverse component is in the first blocking state, at closure part 31
In the second blocking state, when anti-reverse component is in the first conducting state, closure part 31 is in the second conducting state and
One exhaust breach 22 radially corresponds to air-breathing groove 12 in quiet disk suction hole 10.Second air intake passage belongs to the first air intake passage
A part, it is preferable that when anti-reverse component is in the first blocking state, anti-reverse component blocks air entry 11, works as closure part
31 are in the second blocking state, and closure part 31 blocks air inlet 21.As feasible embodiment, the top of sleeve pipe 20 does not reach
Air entry 11 can make anti-reverse component be in the first blocking state, and closure part 31, which does not reach air inlet 21, can make closure part 31
In the second blocking state.
The anti-reverse-rotation structure of the screw compressor of Application Example one, due to being in the first conducting state when anti-reverse component
When, closure part 31 is in the second conducting state and first exhaust breach 22 radially corresponds to air-breathing groove in quiet disk suction hole 10
12, therefore, refrigerant can be divided into two strands and enter air-breathing groove 12, and wherein one refrigerant is by between the top of sleeve pipe 20 and air entry 11
Region be directly entered air-breathing groove 12, that is to say, that it is same with the refrigerant mobile phase described in background technology, and another strand of refrigerant warp
The region crossed between the top of sleeve pipe 20 and first exhaust breach 22 enters air-breathing groove 12, that is to say, that the second air intake passage
The air-breathing circulation area for adding the anti-reverse-rotation structure described in background technology is set, and this strand of refrigerant is compared to background
The part that the suction refrigerant of anti-reverse-rotation structure described in technology has more.Due to being in the first blocking state when anti-reverse component
When, closure part 31 is in the second blocking state, therefore, it is possible to scroll plate reversion of playing a part of preventing circling round.By above-mentioned analysis
Understand, the anti-reverse-rotation structure of the screw compressor of embodiment one can increase air-breathing circulation area.It should be noted that only need
When screw compressor is just stopped, prevents the inner high voltage refrigerant of screw compressor from flowing out air entry 11 and can be achieved to prevent
The effect of scroll plate of circling round reversion, if not having high pressure refrigerant in screw compressor, whether anti-reverse component is in the first resistance
Disconnected state and closure part 31 whether in the second blocking state all without causing scroll plate reversion of circling round.Using said structure,
The effect that increase air-breathing circulation area can be achieved in the axial size of quiet disk suction hole 10 for sleeve pipe 20 need not be reduced, ensure that
Sleeve pipe 20 has certain intensity.
As shown in Fig. 2, Fig. 3 and Figure 10, in embodiment one, closure part 31 with can facing sleeve 20 in quiet disk suction hole 10
The mode that moves up of axle be arranged on the inside of sleeve pipe 20, the bottom of sleeve pipe 20, which is provided with, stops closure part 31 and towards sleeve pipe
First limiting section 23 of 20 inside extension, the anti-reverse-rotation structure of the screw compressor of embodiment one also include the first elastic reset
Part 40 and baffle plate 30.First dynamic clamping head and quiet clamping head 40 towards air entry 11 and makes anti-reverse component tend to the active force of sleeve pipe 20
One blocking state, that is to say, that the first dynamic clamping head and quiet clamping head 40 makes anti-reverse component change to the first blocking state.Baffle plate 30 includes
Plate body, plate body form closure part 31, and closure part 31 is in the second conducting state and relies on screw compressor by self gravitation
Interior gases at high pressure are in the second blocking state.Using aforesaid way, without setting single controlling organization that counnter attack can be achieved
Turn component and changed between the first conducting state and the first blocking state.First limiting section 23 is preferably in the circumference of sleeve pipe 20
The spacing preiection being spaced apart, or the annular protrusion upwardly extended in the week of sleeve pipe 20, or, the bottom of sleeve pipe 20
Portion is provided with closed plate and forms enclosed construction with the bottom, and closed plate forms the first limiting section 23.
Specifically, as shown in Fig. 2 closure part 31 in the case of by external force, the second conducting be not in by self gravitation
State, after screw compressor starts, refrigerant enters disk suction hole 10 in meditation by air entry 11, and dotted arrow represents refrigerant stream in figure
To the down force from extraneous refrigerant is passed to the first limiting section 23 by closure part 31, and now, the first limiting section 23 drives
Sleeve pipe 20 moves down and overcomes the restoring force of the first dynamic clamping head and quiet clamping head 40, and the distance of closure part 31 and air entry 11 is increasingly
Far, until that can not continue to move to, the first air intake passage reaches maximum.As shown in figure 3, the moment that screw compressor stops, closure
Portion 31 is no longer influenced by the down force of extraneous refrigerant, and sleeve pipe 20 is under the restoring force effect of the first dynamic clamping head and quiet clamping head 40 towards suction
Gas port 11 moves, and the first limiting section 23 drives closure part 31 to be moved towards air entry 11, and at the same time, closure part 31 is in whirlpool
Moved in the presence of gases at high pressure in rotation compressor towards the air inlet 21 of sleeve pipe 20, dotted arrow represents refrigerant stream in figure
The second blocking state is in, final closure part 31, and anti-reverse component is in the first blocking state, in screw compressor
Gases at high pressure will not discharge through air entry 11, and then avoid scroll plate reversion of circling round.
As shown in Figure 8 and Figure 9, in embodiment one, first exhaust breach 22 penetrates on the bearing of trend of sleeve pipe 20.
That is the side wall of sleeve pipe 20 is the annular of non-close in its circumferential direction, the second air intake passage can be improved to greatest extent
Refrigerant circulation.Certainly, first exhaust breach 22 can be made only in the bottom of the side wall of sleeve pipe 20, can be made only in sleeve pipe 20
The top of side wall.The L1 shown in Fig. 2 is the distance between closure part 31 and air entry 11, and S1 is air-breathing circulation area.
L1 adds the distance between closure part 31 and the top of sleeve pipe 20 compared to the L2 in background technology.
As shown in Figures 2 and 3, the anti-reverse-rotation structure of the screw compressor of embodiment one also includes being arranged on quiet disk suction hole
Annular stop 13 on 10 hole wall, when anti-reverse component is in the first blocking state, the top and closure part of sleeve pipe 20
31 are supported in annular stop 13, and the hole wall of the outer peripheral face of sleeve pipe 20 and quiet disk suction hole 10 is coordinated using gap, closure
The outer peripheral face in portion 31 is coordinated with the inner surface of sleeve pipe 20 using gap.Due to the hole of the outer peripheral face and quiet disk suction hole 10 of sleeve pipe 20
Wall is coordinated using gap, therefore frictional force of the sleeve pipe 20 when the axle of quiet disk suction hole 10 moves up is smaller, and sleeve pipe 20 moves
It is more flexible, sensitivity is higher.Due to, the top of sleeve pipe 20 is supported in annular stop 13, therefore, the meeting of annular stop 13
The gap between the outer peripheral face of sleeve pipe 20 and the hole wall of quiet disk suction hole 10 is sheltered from, avoids refrigerant from passing through air entry by the gap
11.Similarly understand, frictional force of the closure part 31 in the bearing of trend movement of sleeve pipe 20 is smaller.In addition, as feasible implementation
Mode, annular stop 13 can be not provided with, the outer peripheral face of sleeve pipe 20 is in contact with the hole wall of quiet disk suction hole 10, closure part 31
Outer peripheral face be in contact with the inner surface of sleeve pipe 20.Annular stop 13 is preferably air inlet pipe, and air entry 11 is located at air inlet pipe
Bottom.
Because sleeve pipe 20 can rotate in moving back and forth, if rotational angle is excessive, first exhaust breach 22
Air-breathing groove 12 would not be corresponded to, the extraneous refrigerant flowed into by air entry 11 can not just pass through first exhaust breach 22 to enter air-breathing groove
In 12, and then air-breathing circulation area is reduced, to solve the above problems, the anti-reverse-rotation structure of the screw compressor of embodiment one is also
Including limiting steering part, limiting steering part is arranged on sleeve pipe 20, and limiting steering part limiting boot 20 is rotated so that first exhaust
Breach 22 radially corresponds to air-breathing groove 12 quiet disk suction hole 10.
As shown in figures 7 and 12, in embodiment one, limiting steering part includes annular stop circle 50, the inner circumferential of sleeve pipe 20
The accommodate groove 24 for accommodating annular stop circle 50 is provided with face, annular stop circle 50 has in quiet disk suction hole 10 radially
Through first exhaust breach 22 and the second limiting section 51 of the inside of air-breathing groove 12 is stretched into, annular stop circle 50 is in the circumferential to be non-
Enclosed construction and there is installation gap 52, installation gap 52 is located in accommodate groove 24.By clamp annular spacing collar 50 with
The spacing of installation gap 52 is diminished, be easy to annular stop circle 50 being arranged in accommodate groove 24.In addition, as feasible reality
Mode is applied, limiting steering part can be two projections being fixed on sleeve pipe 20, and two projections are in the circumferentially-spaced of sleeve pipe 20
Set, and stretch into air-breathing groove 12, then or, opened up on the hole wall of quiet disk suction hole 10 along its axially extending guiding
Groove, above-mentioned projection are arranged in guide groove.
As shown in Fig. 7, Figure 10 and Figure 11, in embodiment one, baffle plate 30 also includes being arranged on the outer peripheral face of plate body
Radial dilatation plate 32, plate body have the convex protuberance for radial dilatation plate in axial direction in quiet disk suction hole 10, protruding parts
In the oblique upper of radial dilatation plate, radial dilatation plate 32 stretches into the inside of first exhaust breach 22, and radial dilatation plate 32 is located at ring
The lower section of shape spacing collar 50, when closure part 31 is in the second blocking state, radial dilatation plate 32 is supported in annular stop circle 50
On.While radial dilatation plate 32 is by annular stop 50 backstop of circle, plate body is also secured to specified location.Plate body is circular slab,
Radial dilatation plate 32 is with the circular arc in the center of circle at the center of plate body.Can be in the case where being not provided with annular stop circle 50, will
Radial dilatation plate 32 is arranged to annular slab, and the top of sleeve pipe 20 is provided with annular stop portion, is blocked when closure part 31 is in second
During state, annular stop portion backstop annular slab.
As shown in Figure 5 and Figure 6, in embodiment one, the first dynamic clamping head and quiet clamping head 40 is to prolong along the axial direction of quiet disk suction hole 10
The first compression spring stretched, the top of the first compression spring are supported on sleeve pipe 20, and the bottom of the first compression spring is supported quiet
The bottom of disk suction hole 10.As shown in figure 8, the spring top 26 of radially protruding is provided with the outer peripheral face of sleeve pipe 20, first
Support on spring top 26 on the top of compression spring.Feelings for being not provided with annular stop 13 and limiting steering part
Condition, the top of the first compression spring are fixedly installed on sleeve pipe 20, and quiet disk suction hole is fixedly installed in the bottom of the first compression spring
10 bottom.Using said structure, sleeve pipe 20 will not eject air entry 11, will not also rotate., can as feasible embodiment
Will replace the first compression spring with resilient sleeve, then or, the first compression spring is replaced using extension spring.
As shown in figure 13, the difference of the anti-reverse-rotation structure of the screw compressor of embodiment two and above-described embodiment one is,
Annular stop circle 50 and radial dilatation plate 32 are not provided with, adds the second dynamic clamping head and quiet clamping head 60, closure part 31 and the bottom of sleeve pipe 20
The second dynamic clamping head and quiet clamping head 60 is provided between portion, the second dynamic clamping head and quiet clamping head 60 towards air inlet 21 and makes to the active force of sleeve pipe 20
Closure part 31 tends to the second blocking state, and the top of the second dynamic clamping head and quiet clamping head is fixedly installed on closure part 31, and the second elasticity is multiple
The bottom of position part 60 is fixedly installed on the bottom of sleeve pipe 20.When screw compressor is just stopped, closure part 31 is second
In the presence of dynamic clamping head and quiet clamping head 60, the second blocking state can be in rapidly, and improving prevents the effect that scroll plate inverts of circling round.
Certainly, the anti-reverse-rotation structure of the screw compressor of embodiment one equally can set using with the identical mode of embodiment two
Two dynamic clamping head and quiet clamping heads 60.
As shown in figure 14, the difference of the anti-reverse-rotation structure of the screw compressor of embodiment three and above-described embodiment one is,
Annular stop circle 50 is not provided with, and is the increase in second exhaust breach 25, multiple second exhausts are provided with the side wall of sleeve pipe 20
Breach 25, the spacing of the second exhaust breach 25 adjacent with the first exhaust breach 22 of first exhaust breach 22 and two neighboring
The spacing of second exhaust breach 25 is respectively less than the notch spacing of air-breathing groove 12, between air inlet 21 and each second exhaust breach 25
Formed with the 3rd air intake passage, when closure part 31 is in the second conducting state, each 3rd air intake passage is in the conduction state, when
When closure part 31 is in the second blocking state, each 3rd air intake passage is in blocking state.Said structure is used, even if sleeve pipe 20
Rotate, at least a portion for also having at least one above-mentioned breach corresponds to air-breathing groove 12, to allow extraneous refrigerant to pass through.
Present invention also provides a kind of screw compressor, the screw compressor of the present embodiment includes anti-reverse-rotation structure, counnter attack
Rotation structure is the anti-reverse-rotation structure of the screw compressor of any of the above-described embodiment.Quiet disk suction hole is formed on quiet disk, air-breathing groove
It is connected with compression chamber.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (11)
1. a kind of anti-reverse-rotation structure of screw compressor, including：
Quiet disk suction hole (10), there is air entry (11)；
It is arranged on the hole wall of the quiet disk suction hole (10) and along the axially extending air-breathing groove of the quiet disk suction hole (10)
(12), the first air intake passage is formed between the air entry (11) and the air-breathing groove (12)；
Anti-reverse component, there is the first blocking state for blocking first air intake passage and turn on first air intake passage
First conducting state, the anti-reverse component are included can be set in a manner of the axle of the quiet disk suction hole (10) moves up
In the inside of the quiet disk suction hole (10) and along the axially extending sleeve pipe (20) of the quiet disk suction hole (10), when described anti-reverse
When component is in first conducting state, described sleeve pipe (20) is located at the lower section of air entry (11)；
Characterized in that, the top of described sleeve pipe (20) has air inlet (21) corresponding with the air entry (11), the set
Manage and be provided with first exhaust breach (22) in the side wall of (20), between the air inlet (21) and the first exhaust breach (22)
The second air intake passage is formed, the anti-reverse component also includes closure part (31), when the anti-reverse component is in described first
During blocking state, the closure part (31) is in the second blocking state for blocking second air intake passage, when anti-reverse component
During in first conducting state, the closure part (31) is on the second conducting state of second air intake passage simultaneously
And the first exhaust breach (22) radially corresponds to the air-breathing groove (12) in the quiet disk suction hole (10).
2. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the closure part (31) is with can
The inside of the sleeve pipe (20) is arranged in the mode that the axle of the quiet disk suction hole (10) moves up with respect to described sleeve pipe (20),
The bottom of described sleeve pipe (20) is provided with first for stopping the closure part (31) and extending towards the inside of described sleeve pipe (20)
Limiting section (23), the anti-reverse component also include：
Baffle plate (30), the baffle plate (30) include plate body, and the plate body forms the closure part (31), the closure part (31) according to
It is in second conducting state by self gravitation and is in described second by the gases at high pressure in screw compressor and blocks
State；
First dynamic clamping head and quiet clamping head (40), first dynamic clamping head and quiet clamping head (40) is to the active force of described sleeve pipe (20) towards the suction
Gas port (11) simultaneously makes the anti-reverse component tend to first blocking state.
3. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the first exhaust breach
(22) penetrated on the bearing of trend of described sleeve pipe (20).
4. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the anti-reverse component also wraps
Include：
The annular stop (13) being arranged on the hole wall of the quiet disk suction hole (10), when the anti-reverse component is in first
During blocking state, supported at the top of described sleeve pipe (20) in the annular stop (13), the outer peripheral face of described sleeve pipe (20)
Coordinated with the hole wall of quiet disk suction hole (10) using gap.
5. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the anti-reverse component also wraps
Include：
Limiting steering part, it is arranged in described sleeve pipe (20), the limiting steering part limitation described sleeve pipe (20) is rotated so that institute
State first exhaust breach (22) and radially correspond to the air-breathing groove (12) in the quiet disk suction hole (10).
6. the anti-reverse-rotation structure of screw compressor according to claim 5, it is characterised in that the limiting steering part bag
Include：
Annular stop circle (50), it is provided with the inner peripheral surface of described sleeve pipe (20) and accommodates the receiving of the annular stop circle (50) and lead to
Groove (24), the annular stop circle (50) has radially passes through the first exhaust breach in the quiet disk suction hole (10)
(22) and the second limiting section (51) of the inside of the air-breathing groove (12) is stretched into, the annular stop circle (50) is in the circumferential to be non-
Enclosed construction and there is installation gap (52), the installation gap (52) is located in the accommodate groove (24).
7. the anti-reverse-rotation structure of screw compressor according to claim 6, it is characterised in that the anti-reverse component also wraps
Include：
Baffle plate (30), the baffle plate (30) include plate body and the radial dilatation plate (32) being arranged on the outer peripheral face of the plate body,
The plate body forms the closure part (31), the closure part (31) by self gravitation be in second conducting state and
Second blocking state is in by the gases at high pressure in the screw compressor, the plate body has in the quiet disk air-breathing
The convex protuberance for radial dilatation plate (32) in axial direction in hole (10), the protruding parts in radial dilatation plate (32) it is oblique on
Side, the radial dilatation plate (32) stretch into the inside of the first exhaust breach (22), and the radial dilatation plate (32) is located at ring
The lower section of shape spacing collar (50), when the closure part (31) are in second blocking state, the radial dilatation plate (32)
Support on the annular stop circle (50).
8. the anti-reverse-rotation structure of screw compressor according to claim 2, it is characterised in that first dynamic clamping head and quiet clamping head
(40) for along the first axially extending compression spring of the quiet disk suction hole (10), the top of first compression spring is fixed
It is arranged in described sleeve pipe (20), the bottom of the quiet disk suction hole (10) is fixedly installed in the bottom of first compression spring.
9. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the side wall of described sleeve pipe (20)
On be provided with multiple second exhaust breach (25), the first exhaust breach (22) and the adjacent institute of the first exhaust breach (22)
State the spacing of second exhaust breach (25) and the spacing of the two neighboring second exhaust breach (25) is respectively less than the air-breathing
The notch spacing of groove (12), it is each formed with the 3rd air-breathing between the air inlet (21) and each second exhaust breach (25) and leads to
Road, when the closure part (31) are in second conducting state, each 3rd air intake passage is in the conduction state, works as institute
When stating closure part (31) and being in second blocking state, each 3rd air intake passage is in blocking state.
10. the anti-reverse-rotation structure of screw compressor according to claim 1, it is characterised in that the closure part (31) with
The second dynamic clamping head and quiet clamping head (60) is provided between the bottom of described sleeve pipe (20), second dynamic clamping head and quiet clamping head (60) is to the set
The active force of (20) is managed towards the air inlet (21) and the closure part (31) is tended to second blocking state, described the
The top of two dynamic clamping head and quiet clamping heads is fixedly installed on the closure part (31), and the bottom of second dynamic clamping head and quiet clamping head (60) is fixed
It is arranged on the bottom of described sleeve pipe (20).
11. a kind of screw compressor, including anti-reverse-rotation structure, the anti-reverse-rotation structure is any one of claim 1 to 10 institute
The anti-reverse-rotation structure for the screw compressor stated.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384030.7A CN105332923B (en) | 2014-08-06 | 2014-08-06 | The anti-reverse-rotation structure of screw compressor and there is its screw compressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384030.7A CN105332923B (en) | 2014-08-06 | 2014-08-06 | The anti-reverse-rotation structure of screw compressor and there is its screw compressor |
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| CN105332923B true CN105332923B (en) | 2018-02-13 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204061191U (en) * | 2014-08-06 | 2014-12-31 | 珠海格力节能环保制冷技术研究中心有限公司 | The anti-reverse-rotation structure of scroll compressor and there is its scroll compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5807081A (en) * | 1997-01-06 | 1998-09-15 | Carrier Corporation | Combination valve for screw compressors |
| JP4429827B2 (en) * | 2004-07-06 | 2010-03-10 | カルソニックカンセイ株式会社 | Check valve and gas compression device equipped with check valve |
| JP2009281345A (en) * | 2008-05-26 | 2009-12-03 | Daikin Ind Ltd | Scroll compressor |
| JP2010031677A (en) * | 2008-07-25 | 2010-02-12 | Daikin Ind Ltd | Scroll compressor |
| JP2010112239A (en) * | 2008-11-05 | 2010-05-20 | Daikin Ind Ltd | Compressor |
| CN203463294U (en) * | 2013-09-10 | 2014-03-05 | 陕西赛恩斯压缩机有限公司 | Device for preventing air return of horizontal type scroll air compressor |
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2014
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204061191U (en) * | 2014-08-06 | 2014-12-31 | 珠海格力节能环保制冷技术研究中心有限公司 | The anti-reverse-rotation structure of scroll compressor and there is its scroll compressor |
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