CN209414147U - A kind of back pressure cavity structure of voltage regulation and the screw compressor with it - Google Patents
A kind of back pressure cavity structure of voltage regulation and the screw compressor with it Download PDFInfo
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- CN209414147U CN209414147U CN201821961737.XU CN201821961737U CN209414147U CN 209414147 U CN209414147 U CN 209414147U CN 201821961737 U CN201821961737 U CN 201821961737U CN 209414147 U CN209414147 U CN 209414147U
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- 230000006835 compression Effects 0.000 claims abstract description 32
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- 238000007789 sealing Methods 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 11
- 230000010355 oscillation Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 24
- 239000012530 fluid Substances 0.000 description 16
- 239000003507 refrigerant Substances 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 238000007667 floating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a kind of back pressure cavity structure of voltage regulation and with its screw compressor, back pressure cavity structure of voltage regulation includes fixed scroll and orbiter, forms compression chamber between the two；Fixed scroll is equipped with back pressure cavity far from the side of orbiter, and back pressure cavity is connected with middle pressure hole；Pressure stabilizing cavity is equipped with inside orbiter；Orbiter is equipped with first through hole and the second through-hole；First through hole one end is connected with pressure stabilizing cavity, and when orbiter turns to predeterminated position, the first through hole other end is connected with middle pressure hole；The opposite end of second through-hole is separately connected compression chamber and pressure stabilizing cavity.The intermediate pressure of pressure stabilizing cavity is introduced the back pressure cavity at the quiet vortex back side by the conducting cooperation in first through hole and middle pressure hole by the utility model, the pressure for introducing back pressure cavity can be by changing the aperture of first through hole and the second through-hole and the angle range progress flexible design of first through hole, it is not in the excessive problem of the middle pressure oscillation of back pressure cavity, so that compressor operation is more stable and reliable.
Description
Technical field
The utility model relates to Compressor Technology field more particularly to a kind of back pressure cavity structure of voltage regulation and with its vortex
Compressor.
Background technique
Screw compressor is mainly by shell, compression mechanism, supporting mechanism, driving mechanism, working fluid suction line and work
The components such as fluid discharge pipe composition.Compression mechanism is made of dynamic vortex component and quiet scroll element.Driving mechanism includes stator
Component and crankshaft rotor component, crankshaft drives dynamic vortex component, due to being provided with anti-rotation mechanism on dynamic vortex component, so that dynamic
Scroll element does translation rotation relative to quiet scroll element.By the spiral wraps of quiet scroll element and the spiral vortex of dynamic vortex component
It rolls up the compression chamber's volume being defined as to gradually become smaller, the refrigerant pressure in chamber constantly increases, to inhale via working fluid
Enter the pipe sucking indoor refrigerant of compression chamber by compression and the finally exhaust outlet discharge from scroll element center, and from workflow
Compressor is discharged to external refrigeration cycle circuit in body discharge pipe.It is achieved in the working cycles mistake of refrigerant sucking, compression, discharge
Journey.Screw compressor is widely used in air-conditioning and art of heat pumps.
The intermediate pressure of intermediate compression chamber is often introduced the back pressure cavity at the quiet vortex back side by existing screw compressor, utilizes introducing
The middle pressure of back pressure cavity is designed as back pressure with this to complete the axial seal between the screw compressor pump housing.Traditional scroll compression
Contracting machine presses hole to be connected to intermediate compression chamber with back pressure cavity in usually opening up on quiet vortex, and this conventional design is difficult through hole
Position, aperture are connected to angular range and cross senior general and cause to introduce back pressure cavity come the angular range of connection compression chamber in pressure hole in controlling
Middle pressure oscillation is excessive, to cause pump housing leakage, furthermore back pressure fluctuation also results in movable orbiting scroll unbalance stress, accelerates dynamic whirlpool
Disk and upper bracket are worn, to influence the reliability of compressor.
Utility model content
The first of the utility model is designed to provide a kind of back pressure cavity structure of voltage regulation, to solve the connection in existing middle pressure hole
Angular range is excessive to cause the middle pressure oscillation for being introduced into back pressure cavity excessive, thus caused by the pump housing leakage, movable orbiting scroll unbalance stress
The problems such as.
To achieve the above object, the utility model proposes technical solution it is as follows: a kind of back pressure cavity structure of voltage regulation, including phase
The fixed scroll and orbiter of cooperation, form compression chamber between the fixed scroll and orbiter；Wherein, the quiet vortex
Disk is equipped with back pressure cavity far from the side of the orbiter, and the back pressure cavity is connected with middle pressure hole；It is set inside the orbiter
There is pressure stabilizing cavity；The orbiter is equipped at least one first through hole and at least one second through-hole；Wherein, described first is logical
Hole one end is connected with the pressure stabilizing cavity, when the orbiter turns to predeterminated position, the first through hole other end and institute
Middle pressure hole is stated to be connected；The opposite end of second through-hole is separately connected the compression chamber and the pressure stabilizing cavity.
According to back pressure cavity structure of voltage regulation provided by the utility model, pressure stabilizing cavity is opened up in orbiter, it is first through hole, steady
Pressure chamber and the second through-hole are connected, and the intermediate pressure of pressure stabilizing cavity is introduced quiet whirlpool by the conducting cooperation of first through hole and middle pressure hole
The back pressure cavity for revolving the back side, the pressure for introducing back pressure cavity can be by the aperture and first through hole of change first through hole and the second through-hole
Angle range carry out flexible design, be not in the excessive problem of the middle pressure oscillation of back pressure cavity so that compressor operation more
It is steady reliable.
In addition, can also be had following additional according to a kind of back pressure cavity structure of voltage regulation of the utility model above-described embodiment
Technical characteristic:
An example according to the present utility model, the fixed scroll include that the first substrate being connected and first revolve tooth,
The orbiter includes the second substrate being connected and the second rotation tooth；The first substrate and the second substrate are set relatively
It sets, the first rotation tooth and the second rotation tooth cooperate；Wherein, the pressure stabilizing cavity is equipped in the second substrate.
An example according to the present utility model, the first substrate are equipped with medium pressure hole, and the second rotation tooth is equipped with
The first through hole, the second substrate are equipped with second through-hole.
An example according to the present utility model, the first substrate are equipped with first close to the surface of the second substrate
Deep gouge；Medium pressure hole one end is located in first deep gouge, and the other end is connected with the back pressure cavity.
An example according to the present utility model, the first rotation tooth are equipped with medium pressure hole, and the second substrate is equipped with
The first through hole and second through-hole.
An example according to the present utility model, the second substrate are equipped with second close to the surface of the first substrate
Deep gouge, described first through hole one end are located in second deep gouge, and the other end is connected with the pressure stabilizing cavity.
An example according to the present utility model, the second substrate are equipped with blind hole, and the open end of the blind hole is equipped with
Plug, the plug and blind hole sealing cooperatively form the pressure stabilizing cavity.
An example according to the present utility model, the blind hole open up direction perpendicular to the axial direction of the orbiter.
The second of the utility model is designed to provide a kind of screw compressor, with back described in above-mentioned technical proposal
Press chamber structure of voltage regulation.
An example according to the present utility model, including shell, demarcation plate and lid；The shell and the lid are formed
Cavity, the demarcation plate are placed in the cavity, and the cavity is divided into first chamber and second chamber；First chamber
Indoor location has the back pressure cavity structure of voltage regulation；The demarcation plate, which is equipped with, is connected to the logical of the first chamber and the second chamber
Hole, the through hole are equipped with check-valves.
The advantages of above additional aspect, will be set forth in part in the description, and partially will become from the following description bright
It is aobvious, or recognized by the practice of the utility model.
Detailed description of the invention
Fig. 1 is the orbiter and fixed scroll mated condition schematic diagram (one) of this prior art；
Fig. 2 is the orbiter and fixed scroll mated condition schematic diagram (two) of this prior art；
Fig. 3 is the orbiter and fixed scroll mated condition schematic diagram (three) of this prior art；
Fig. 4 is the orbiter and fixed scroll mated condition schematic diagram (four) of this prior art；
Fig. 5 is the structural schematic diagram of the first orbiter of the utility model embodiment；
Fig. 6 is the sectional view of the first orbiter of the utility model embodiment；
Fig. 7 is the structural schematic diagram of the first fixed scroll of the utility model embodiment；
Fig. 8 is the sectional view of the first fixed scroll of the utility model embodiment；
Fig. 9 is the first orbiter and fixed scroll mated condition schematic diagram (one) of the utility model embodiment；
Figure 10 is the first orbiter and fixed scroll mated condition schematic diagram (two) of the utility model embodiment；
Figure 11 is the structural schematic diagram of second of orbiter of the utility model embodiment；
Figure 12 is the sectional view of second of orbiter of the utility model embodiment；
Figure 13 is second of orbiter and fixed scroll mated condition schematic diagram (one) of the utility model embodiment；
Figure 14 is second of orbiter and fixed scroll mated condition schematic diagram (two) of the utility model embodiment；
Figure 15 is the structural schematic diagram of the third orbiter of the utility model embodiment；
Figure 16 is the sectional view of the third orbiter of the utility model embodiment；
Figure 17 is the structural schematic diagram of the third fixed scroll of the utility model embodiment；
Figure 18 is the sectional view of the third fixed scroll of the utility model embodiment；
Figure 19 is the third orbiter and fixed scroll mated condition schematic diagram (one) of the utility model embodiment；
Figure 20 is the third orbiter and fixed scroll mated condition schematic diagram (two) of the utility model embodiment；
Figure 21 is the structural schematic diagram of the 4th kind of orbiter of the utility model embodiment；
Figure 22 is the sectional view of the 4th kind of orbiter of the utility model embodiment；
Figure 23 is the structural schematic diagram of the 4th kind of fixed scroll of the utility model embodiment；
Figure 24 is the sectional view of the 4th kind of fixed scroll of the utility model embodiment；
Figure 25 is the 4th kind of orbiter and fixed scroll mated condition schematic diagram (one) of the utility model embodiment；
Figure 26 is the 4th kind of orbiter and fixed scroll mated condition schematic diagram (two) of the utility model embodiment；
Figure 27 is the structural schematic diagram of the first screw compressor of the utility model embodiment；
Figure 28 is the structural schematic diagram of second of screw compressor of the utility model embodiment；
Figure 29 is the structural schematic diagram of the third screw compressor of the utility model embodiment；
Figure 30 is the structural schematic diagram of the 4th kind of screw compressor of the utility model embodiment.
In attached drawing, parts list represented by the reference numerals are as follows:
1. fixed scroll；2. orbiter；3. back pressure cavity；4. hole is pressed in；5. pressure stabilizing cavity；6. first through hole；7. second is logical
Hole；8. first substrate；9. the first rotation tooth；10, the second substrate；11. the second rotation tooth；12. the first deep gouge；13, the second deep gouge；14.
Blind hole；15. plug；16. shell；17. demarcation plate；18. lid；19. sealing cover；20. anti-rotation mechanism；21. upper bracket supports
Plate；22. eccentric bushing；23. main balance weight；24. upper bracket pedestal；25. shafting component；26. non-return valve block；27. non-return valve seat；
28. sealing station.
Embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Embodiment one
Attached drawing 1-4 is the mated condition schematic diagram of existing orbiter 2 and fixed scroll 1 in different moments.Specifically, such as
Shown in Fig. 1, the pump housing is run to corner α 1, and pressure hole 4 is closed in fixed scroll 1, as shown in Fig. 2, the pump housing is run to corner β 1, quiet whirlpool
Hole 4 is pressed to open for the first time in the cycle in capstan 1, pressure hole 4 is for the first time as shown in figure 3, the pump housing is run to corner α 2, in fixed scroll 1
It closes, as shown in figure 4, the pump housing is run to corner β 2, pressure hole 4 is opened for second in the cycle in fixed scroll 1.Then fixed scroll
The angle range for pressing hole 4 to open in 1 is from 1 → α of β 2,2 → α of β 1, and the angle range of closing is from 2 → β of α 2,1 → β of α 1.Wherein
The angle range of unlatching is larger, and the compression chamber pressure oscillation being related to is big, directly causes 3 pressure oscillation of back pressure cavity big, dynamic vortex fortune
Row is unstable, causes pump housing axial leakage, and furthermore back pressure fluctuation also results in movable orbiting scroll unbalance stress, accelerate movable orbiting scroll with it is upper
Bracket abrasion, to influence the reliability of compressor.
The problem of based on above structure, the present embodiment improve orbiter 2 and the capstan that reposes, are provided
A kind of 3 structure of voltage regulation of back pressure cavity, the structure include the fixed scroll 1 and orbiter 2 matched, fixed scroll 1 and dynamic whirlpool
Compression chamber is formed between capstan 2；Fixed scroll 1 is equipped with above-mentioned back pressure cavity 3 far from the side of orbiter 2, and back pressure cavity 3 connects
There is middle pressure hole 4.
Above structure is same as the prior art, and the present embodiment thes improvement is that: pressure stabilizing is equipped with inside orbiter 2
Chamber 5；Orbiter 2 is equipped at least one first through hole 6 and at least one second through-hole 7；Wherein, 6 one end of first through hole with
Pressure stabilizing cavity 5 is connected, and when orbiter 2 turns to predeterminated position, 6 other end of first through hole is connected with middle pressure hole 4；Second is logical
The opposite end in hole 7 is separately connected compression chamber and pressure stabilizing cavity 5.
The intermediate pressure of pressure stabilizing cavity 5 is introduced quiet vortex by the conducting cooperation of first through hole 6 and middle pressure hole 4 and carried on the back by the structure
The back pressure cavity 3 in face, the pressure for introducing back pressure cavity 3 can be by aperture and the first through hole of change first through hole 6 and the second through-hole 7
6 angle range carries out flexible design, is not in the excessive problem of the middle pressure oscillation of back pressure cavity 3, so that compressor is run
It is more stable and reliable.
The fixed scroll 1 of the present embodiment includes the first substrate 8 being connected and the first rotation tooth 9, and orbiter 2 includes being connected
The second substrate 10 connect and the second rotation tooth 11, first substrate 8 and the second substrate 10 are oppositely arranged, the first rotation tooth 9 and the second rotation tooth
11 cooperate；And pressure stabilizing cavity 5 is equipped in the second substrate 10.
Specifically, the present embodiment the second substrate 10 formed pressure stabilizing cavity 5 generation type there are many, such as processing when it is straight
It connects and makes the substrate with cavity, but the structure is difficult to process.Therefore the pressure stabilizing cavity 5 of the present embodiment preferably by blind hole 14 and blocks up
First 15 form, i.e., as shown in Fig. 5,6,11,12,15,16,21 and 22, the present embodiment offers on the side wall of the second substrate 10
Blind hole 14, the open end of blind hole 14 are equipped with plug 15, and plug 15 and the sealing of blind hole 14 cooperatively form pressure stabilizing cavity 5.In order to extend
The length of blind hole 14, the blind hole 14 of the present embodiment opens up direction and the axial direction of orbiter 2 is perpendicular.
And since orbiter 2 and the capstan that reposes all have substrate and rotation tooth, first through hole 6 and middle pressure hole 4 are two
On person open up mode can there are many:
First way: for example shown in Fig. 5-10, it is equipped with middle pressure hole 4 in the first rotation tooth 9, is equipped with first in the second substrate 10
Through-hole 6 and the second through-hole 7, wherein first through hole 6 and the quantity of the second through-hole 7 all can be one or more, and first is logical
Hole 6 and the second through-hole 7 design according to demand between the two away from.Wherein 6 compliant scroll disk 2 of first through hole does half around fixed scroll 1
Diameter is the circular motion of eccentricity, and by design, the circular motion track at 6 center of first through hole can be by being opened in the first rotation tooth 9
On middle pressure hole 4 center, the two intersection angle range from α to β.In the range, it is opened in the first of the second substrate 10
Through-hole 6 is connected with the middle pressure hole 4 being opened on the first rotation tooth 9, since first through hole 6 is connected to the second through-hole 7, and middle pressure hole
4 are connected with back pressure cavity 3.Since first through hole 6, pressure stabilizing cavity 5, the second through-hole 7 and compression are sequentially communicated by force, design pressure
3 kinds of back pressure cavity will be imported by middle pressure hole 4 and first through hole 6, and the angle range be connected can pass through middle pressure hole 4 and first
Control is designed in the aperture and position of through-hole 6.Therefore under this configuration, the pressure for introducing back pressure cavity 3 can be according to product
It needs and carries out flexible design, so that compressor operation is more stable and reliable, volumetric efficiency gets a promotion with reliability.
The second way: on the basis of above structure, as illustrated in figs. 11-14, the present embodiment is also leaned in the second substrate 10
The surface of nearly first substrate 8 is equipped with the second deep gouge 13, and 6 one end of first through hole is located in the second deep gouge 13, the other end and pressure stabilizing
Chamber 5 is connected.The purpose of setting of second deep gouge 13 is to suitably extend first under the premise of not changing 6 aperture of first through hole
The angle range of the intersection in through-hole 6 and middle pressure hole 4.
The third mode: again for example shown in Figure 15-20, middle pressure hole 4, the second rotation tooth 11 can also be equipped in first substrate 8
Equipped with first through hole 6, the second substrate 10 is equipped with the second through-hole 7.Similarly, 6 compliant scroll disk 2 of first through hole is done around fixed scroll 1
Radius is the circular motion of eccentricity, and by design, the circular motion track at 6 center of first through hole can be by being opened in quiet vortex
The center in the middle pressure hole 4 of 1 compression chamber bottom surface of disk, the angle range of intersection is from α to β.In the range, first through hole 6 is in
Pressure hole 4 is connected, and since first through hole 6, pressure stabilizing cavity 5, the second through-hole 7 and compression are sequentially communicated by force, design pressure will lead to
Pressure hole 4 and first through hole 6 are imported into 3 kinds of back pressure cavity in crossing, and the angle range be connected can pass through middle pressure hole 4 and first through hole
Control is designed in 6 aperture and position.Therefore under this configuration, the pressure for introducing back pressure cavity 3 can be according to product needs
And flexible design is carried out, so that compressor operation is more stable and reliable, volumetric efficiency gets a promotion with reliability.
4th kind of mode: on the basis of above structure, as shown in figures 21-26, the present embodiment is also close in first substrate 8
The surface of the second substrate 10 is equipped with the first deep gouge 12, and middle 4 one end of pressure hole is located in the first deep gouge 12, the other end and back pressure cavity 3
It is connected.The purpose of setting of first deep gouge 12, suitably extends first through hole 6 under the premise of being the aperture in order to press hole 4 in not changing
With the angle range of the intersection in middle pressure hole 4.
Embodiment two
In conjunction with shown in attached drawing 27-30, a kind of screw compressor is present embodiments provided, wherein the screw compressor in Figure 27
Using 3 structure of voltage regulation of back pressure cavity of first way in embodiment one, Figure 28 uses the back pressure of the second way in embodiment one
3 structure of voltage regulation of chamber, Figure 29 is using 3 structure of voltage regulation of back pressure cavity of the third mode in embodiment one, and Figure 30 is using in embodiment one
3 structure of voltage regulation of back pressure cavity of 4th kind of mode.
Specific structure and principle above-described embodiment about four kinds of 3 structure of voltage regulation of back pressure cavity is it is stated that therefore this implementation
Example does not repeat the part, and the present embodiment is mainly whole to the other structures of screw compressor and screw compressor specific
Improvement, which is made, illustrates explanation.
The screw compressor of the present embodiment further includes that shell 16 (specially compresses in addition to above-mentioned 3 structure of voltage regulation of back pressure cavity
Machine upper housing 16), lid 18 (specially compressor top cover), sealing cover 19, anti-rotation mechanism 20, upper bracket support plate 21, partially
The specific components such as heart set 22, main balance weight 23, upper bracket pedestal 24 and shafting component 25.
Driving motor is directly fixed on or is fixed on the middle and lower part of shell 16 by other connectors, and rotor is fixed on song
Shafting component 25 is formed on axis, by being welded and fixed on shell 16, shafting component 25 is placed on for upper bracket pedestal 24 and lower bracket
In the radial support bearing hole of upper bracket pedestal 24 and in the bearing hole of lower bracket, orbiter 2 and fixed scroll 1 differ phase
Angle 180 degree is opposed to be mounted in upper bracket support plate 21, and engagement forms a series of mutually isolated and volume consecutive variations compressions
Chamber, the bearing hole of orbiter 2 are placed in the gearratio of cycloid axle formation of shafting component 25, are set between orbiter 2 and fixed scroll 1
It is equipped with the anti-rotation mechanism 20 (euclidean Ring) for preventing dynamic vortex rotation.
Driving motor Component driver shafting component 25 move, orbiter 2 shafting component 25 driving under and anti-self-revolving machine
Under the limitation of 20 euclidean Ring of structure, translation rotation is done with base radius in the center around fixed scroll 1.Refrigerant working fluid is through inhaling
Enter pipe to enter in 16 component of screw compressor shell, the pressure texture of the spiral wraps composition on orbiter 2 and fixed scroll 1
It free air-breathing and compresses in shell 16, is discharged by compressed high pressure gas from the working fluid discharge pipe of lid 18.Pressure
Power demarcation plate 17 separates high pressure gas and low-pressure gas.The middle pressure working fluid drawn from compression chamber passes through middle pressure hole 4
Back pressure cavity 3 is introduced, floating seal lid 19 can be jacked up, be bonded with the sealing surface of sealing station 28, working fluid passing away is close
Envelope, prevents high-low pressure gas blowby.Apply sealing force axially downwardly to fixed scroll 1 simultaneously, it is ensured that the axis of compression process compression chamber
To sealing.
Specifically, when screw compressor operating, when sucking the refrigerant working fluid of compression chamber and being compressed to middle pressure condition,
Compression refrigerant working fluid introduces a confined space by the middle pressure hole 4 opened up on fixed scroll 1 in fraction, forms and mentions
For the back pressure cavity 3 of back pressure.Middle compression refrigerant working fluid in back pressure cavity 3 applies downward axial seal to fixed scroll 1
Power, with the upward separating force for overcoming fixed scroll 1 to be applied, the separating force is that refrigerant fluid generates in compression process
Pressure caused by.Hereby it is ensured that the axial seal of compression chamber, prevents compression endoluminal leak.In compressor pump compression work
In the process, when there is liquid hammer or solid impurity in pump housing volume, fixed scroll 1 has flying ability axially upwards,
The moment excessive loads that the off-loadable pump housing is born, guarantee the safety of pump body structure.Middle compression refrigerant work in back pressure cavity 3 simultaneously
Fluid applies upward sealing force to floating seal lid 19, and floating seal lid 19 floats to connect with the sealing surface of sealing station 28 upwards
Touching, completes the sealing to refrigerant working fluid passing away, prevents high-low pressure gas blowby.
The present embodiment is provided with pressure demarcation plate 17 between 18 component of shell 16 and lid, for separating in compressor
High-low pressure.One sealing station 28 of close-fitting on pressure demarcation plate 17, sealing station 28 has one or more gas vents, for constituting
Refrigerant working fluid passing away.Non-return valve block 26, and installation 26 institute of non-return valve block are provided in the high-pressure side of sealing station 28
The non-return valve seat 27 needed.When screw compressor operating, non-return valve block 26 is discharged refrigerant working fluid jack-up, and opening is led to
The channel of exhaust side；When screw compressor is shut down, non-return valve block 26 covers in the plane that gravity falls back in sealing station 28
Gas vent in the compression chamber for preventing high-pressure refrigerant working fluid return to constitute to determine vortex and dynamic vortex, pushes dynamic vortex
Reversion, in order to avoid bring unnecessary noise in short-term.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device of indication or suggestion meaning must have a particular orientation, be constructed and be grasped with specific orientation
Make, should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicit includes one or more of the features.The meaning of " plurality " is two or more in the description of the present invention, unless
Separately there is clearly specific restriction.
In the present invention unless specifically defined or limited otherwise, the arts such as term " installation ", " connected ", " connection "
Language shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral etc..For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of back pressure cavity structure of voltage regulation, which is characterized in that described including the fixed scroll (1) and orbiter (2) matched
Compression chamber is formed between fixed scroll (1) and orbiter (2)；Wherein, the fixed scroll (1) is far from the orbiter
(2) side is equipped with back pressure cavity (3), and the back pressure cavity (3) is connected with middle pressure hole (4)；It is equipped with inside the orbiter (2) steady
It presses chamber (5)；The orbiter (2) is equipped at least one first through hole (6) and at least one second through-hole (7)；Wherein, institute
First through hole (6) one end is stated to be connected with the pressure stabilizing cavity (5), when the orbiter (2) turns to predeterminated position, described
One through-hole (6) other end is connected with medium pressure hole (4)；The opposite end of second through-hole (7) is separately connected the pressure
Contracting chamber and the pressure stabilizing cavity (5).
2. back pressure cavity structure of voltage regulation according to claim 1, which is characterized in that the fixed scroll (1) includes being connected
First substrate (8) and first rotation tooth (9), the orbiter (2) include the second substrate (10) being connected and second revolve tooth
(11)；The first substrate (8) and the second substrate (10) are oppositely arranged, first rotation tooth (9) and the second rotation tooth
(11) it cooperates；Wherein, the pressure stabilizing cavity (5) are equipped in the second substrate (10).
3. back pressure cavity structure of voltage regulation according to claim 2, which is characterized in that the first substrate (8) is equipped in described
It presses hole (4), second rotation tooth (11) is equipped with the first through hole (6), and the second substrate (10) is equipped with second through-hole
(7)。
4. back pressure cavity structure of voltage regulation according to claim 3, which is characterized in that the first substrate (8) is close to described the
The surface of two substrates (10) is equipped with the first deep gouge (12)；Medium pressure hole (4) one end is located in first deep gouge (12), separately
One end is connected with the back pressure cavity (3).
5. back pressure cavity structure of voltage regulation according to claim 2, which is characterized in that first rotation tooth (9) is equipped in described
It presses hole (4), the second substrate (10) is equipped with the first through hole (6) and second through-hole (7).
6. back pressure cavity structure of voltage regulation according to claim 5, which is characterized in that the second substrate (10) is close to described the
The surface of one substrate (8) is equipped with the second deep gouge (13), and described first through hole (6) one end is located in second deep gouge (13),
The other end is connected with the pressure stabilizing cavity (5).
7. according to the described in any item back pressure cavity structure of voltage regulation of claim 2-6, which is characterized in that the second substrate (10) sets
Have blind hole (14), the open end of the blind hole (14) is equipped with plug (15), the plug (15) and the blind hole (14) sealing
Cooperatively form the pressure stabilizing cavity (5).
8. back pressure cavity structure of voltage regulation according to claim 7, which is characterized in that the blind hole (14) to open up direction vertical
Axial direction in the orbiter (2).
9. a kind of screw compressor, which is characterized in that it has such as the described in any item back pressure cavity pressure stabilizing knots of claim 1-8
Structure.
10. screw compressor according to claim 9, which is characterized in that including shell (16), demarcation plate (17) and lid
(18)；The shell (16) and the lid (18) form cavity, and the demarcation plate (17) is placed in the cavity, and will be described
Cavity is divided into first chamber and second chamber；The back pressure cavity structure of voltage regulation is installed in the first chamber；The separation
Plate (17) is equipped with the through-hole for being connected to the first chamber and the second chamber, and the through hole is equipped with check-valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961737.XU CN209414147U (en) | 2018-11-26 | 2018-11-26 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821961737.XU CN209414147U (en) | 2018-11-26 | 2018-11-26 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
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| CN209414147U true CN209414147U (en) | 2019-09-20 |
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| CN201821961737.XU Withdrawn - After Issue CN209414147U (en) | 2018-11-26 | 2018-11-26 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
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| CN (1) | CN209414147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306959A (en) * | 2018-11-26 | 2019-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
-
2018
- 2018-11-26 CN CN201821961737.XU patent/CN209414147U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306959A (en) * | 2018-11-26 | 2019-02-05 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of back pressure cavity structure of voltage regulation and the screw compressor with it |
| CN109306959B (en) * | 2018-11-26 | 2024-05-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Back pressure cavity pressure stabilizing structure and vortex compressor with same |
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| AV01 | Patent right actively abandoned |
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