CN106930947A - Pressure switching mechanism and compressor - Google Patents
Pressure switching mechanism and compressor Download PDFInfo
- Publication number
- CN106930947A CN106930947A CN201511032902.4A CN201511032902A CN106930947A CN 106930947 A CN106930947 A CN 106930947A CN 201511032902 A CN201511032902 A CN 201511032902A CN 106930947 A CN106930947 A CN 106930947A
- Authority
- CN
- China
- Prior art keywords
- face
- protuberance
- pressure
- locking device
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 57
- 238000007789 sealing Methods 0.000 claims description 27
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 38
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- 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
- F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
- F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
Abstract
The invention discloses a kind of pressure switching mechanism and compressor, wherein pressure switching mechanism includes locking device；Locking device is used to be placed in the accommodating chamber opened up in the flange of compressor, with first end face and second end face；First end face towards adjacent flanges cylinder side, low-pressure side of the second end face towards compressor；The lateral wall of locking device is provided with the protuberance of loop configuration；And the gas pressure intensity at first end face is high pressure, locking device towards compressor low pressure lateral movement when, the side wall clamping of protuberance and accommodating chamber.Thus, under the iris action of protuberance, gases at high pressure can not flow to the low-pressure side of compressor, and this also avoids the situation of gases at high pressure leakage.Traditional switching mechanism influence compressor seal effect is finally efficiently solved, gases at high pressure is easily caused and is leaked, reduce the problem of the efficiency of compressor.
Description
Technical field
The present invention relates to Compressor Technology field, more particularly to a kind of pressure switching mechanism and compressor.
Background technology
At present, twin-tub single-stage or twin-tub twin-stage rotary positive displacement compressor, are all cutting by its internal setting
Converting mechanism is come the change that controls the working condition of one of cylinder to realize the discharge capacity of compressor.Wherein,
Switching construction generally includes the lower slide plate with draw-in groove, pin, pin hole and spring.Pin lower surface and low pressure
Air-breathing port is connected, and the stream pressure of pin upper surface is acted on by changing so that pin block slide plate or
Depart from slide plate, so as to realize the working condition of cylinder.Specifically, when the stream pressure of pin upper surface is low
During pressure, cylinder is in idle state；When the stream pressure of pin upper surface is high pressure, then cylinder is being just
Often work.
Pin feature in traditional switching mechanism is usually the cylindrical-shaped structure that upper end is small, lower end is big.Accordingly
, pin hole is then through hole shape.It is placed in pin hole by by pin, and by the cooperation of pin and pin hole
It is set to gap cooperation.Thus, when the air-flow of pin upper surface is high pressure, under lower slide plate and compressor
Roller contact, its corresponding cylinder normal work.Now, due to pin lower surface all the time with lower flange lid
Plate groove (i.e. low pressure air suction port) is connected, and this allows for the high pressure of pin upper end surface to lower surface low pressure
Place's flowing, have impact on the sealing effectiveness between pin lower surface and lower flange cover plate end face, be easily caused high pressure
Gas leak, reduces the efficiency of compressor.
The content of the invention
Based on this, it is necessary to influence compressor seal effect for traditional switching mechanism, be easily caused high pressure
Gas leak, reduces the problem of the efficiency of compressor, there is provided a kind of pressure switching mechanism and compressor.
To realize a kind of pressure switching mechanism that the object of the invention is provided, including locking device；
The locking device is used to be placed in the accommodating chamber opened up in the flange of compressor, with first end face and
Second end face；
, towards the cylinder side of the adjacent flange, the second end face is towards the compressor for the first end face
Low-pressure side；
The lateral wall of the locking device is provided with the protuberance of loop configuration；And
Gas pressure intensity at the first end face is high pressure, low pressure of the locking device towards the compressor
During lateral movement, the side wall clamping of the protuberance and the accommodating chamber.
Wherein in one embodiment, the side wall of the accommodating chamber is provided with boss, and the boss support is described
Protuberance；
Gas pressure intensity at the first end face is high pressure, low pressure of the locking device towards the compressor
During lateral movement, the protuberance towards the boss end face and the boss towards the protuberance end face
Fit.
Wherein in one embodiment, the lateral wall of the protuberance offsets with the sidewall surfaces of the accommodating chamber
Connect.
Wherein in one embodiment, end face and the locking device of the protuberance towards the boss
Axis is vertical；
The boss is vertical with the axis of the accommodating chamber towards the end face of the protuberance.
Wherein in one embodiment, also including sealing ring；
The boss offers the first annular groove towards the end face of the protuberance；Or
The protuberance offers the second annular groove towards the end face of the boss；
The sealing ring is placed in first annular groove or second annular groove.
Wherein in one embodiment, the thickness of the sealing ring is more than first annular groove or second ring
The depth of groove.
Wherein in one embodiment, the sealing ring is elastic caoutchouc packing ring.
Wherein in one embodiment, extended line and the lock of the protuberance towards the end face of the boss
Determining the axis of device, to intersect be the first predetermined angle；
It is that the boss intersects towards the extended line of the end face of the protuberance with the axis of the accommodating chamber
Two predetermined angles；And
First predetermined angle is equal to second predetermined angle, and the thickness of the protuberance is less than described convex
The thickness of platform.
Wherein in one embodiment, first predetermined angle and second predetermined angle are all higher than or wait
In 15 °, and less than or equal to 75 °.
Wherein in one embodiment, the protuberance is integrally formed with the lateral wall of the locking device.
Accordingly, present invention also offers a kind of compressor, including as above any described pressure switching mechanism；
The pressure switching mechanism is arranged in the first flange of the compressor；
In the compressor, the first roller is provided with the first cylinder of the adjacent first flange；
The first slide plate is installed on the lateral wall of first roller；
First slide plate sets fluted towards the end face of the pressure switching mechanism；
The first end face of the locking device in the pressure switching mechanism, it is adaptable in inserting the groove.
Wherein in one embodiment, the cylinder at least two in the compressor.
The beneficial effect of above-mentioned pressure switching mechanism：
Its protrusion by setting loop configuration in the lateral wall of the locking device in the flange of compressor
Portion, the gas pressure intensity at the first end face of locking device is high pressure, low pressure of the locking device towards compressor
During lateral movement, the side wall clamping of the accommodating chamber of protuberance and pressure switching mechanism.This allows for now protuberance
The end face of low-pressure side and the side wall of accommodating chamber towards compressor are plane contact, so as to realize being filled out by protuberance
The purpose in the gap between the lateral wall of locking device and the side wall of accommodating chamber is filled and covered, pressure is improved to reach
The sealing effectiveness of power switching mechanism.Thus, under the iris action of protuberance, gases at high pressure can not flow to pressure
The low-pressure side of contracting machine, this also avoids the situation of gases at high pressure leakage.Finally efficiently solve traditional cutting
Converting mechanism influences compressor seal effect, is easily caused gases at high pressure and leaks, and the efficiency for reducing compressor is asked
Topic.
Brief description of the drawings
Fig. 1 is the profile of a specific embodiment of pressure switching mechanism of the invention；
Fig. 2 is the profile of a specific embodiment of the locking device in pressure switching mechanism of the invention；
Fig. 3 is the profile of a specific embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 4 is the profile of the another specific embodiment of pressure switching mechanism of the invention；
Fig. 5 is the profile of the another specific embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 6 is the profile of the still another embodiment of the locking device in pressure switching mechanism of the invention；
Fig. 7 is the profile of the still another embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 8 is the profile of a specific embodiment of the compressor pump component in compressor of the invention.
Specific embodiment
To make technical solution of the present invention clearer, below in conjunction with drawings and the specific embodiments the present invention is made into
One step is described in detail.
Referring to Fig. 1 and Fig. 2, used as a specific embodiment of pressure switching mechanism 100 of the invention, it includes
Locking device 110.Wherein, locking device 110 is used for the appearance opened up inside the flange 200 that is placed in compressor
Receive in chamber 120, with first end face 111 and second end face 112.The first end face 111 of locking device 110
Towards cylinder 300 side adjacent with flange 200, when not worked close to the cylinder 300 of flange 200,
First end face 111 is stuck on the slide plate 310 in cylinder 300, now at first end face 111 without gas pressure intensity or
It is low-pressure gas；When being worked close to the cylinder 300 of flange 200, first end face 111 and slide plate 310 it
Between gas channel open, gas pressure intensity at first end face 111 is gases at high pressure.Meanwhile, locking device
110 second end face 112 is then towards low-pressure side (that is, the flange plate of the adjacent flange 200 of compressor
400 sides), keep connecting with the low pressure passage of compressor by the groove 410 on flange plate 400.
Thus, when not worked close to the cylinder 300 of the flange 200, the first end face 111 of locking device 110
The gas pressure intensity at place is maintained static less than or equal to the gas pressure intensity at second end face 112, locking device 110.
When being worked close to the cylinder 300 of the flange 200, then the gas at the first end face 111 of locking device 110
, more than the gas pressure intensity at second end face 112, under differential pressure action, locking device 110 is towards compression for pressure
The low pressure lateral movement of machine.Meanwhile, in second end face 112 and the adjacent flange 200 of locking device 110
Spring 130 is additionally provided between flange plate 400, for when 300 power cut-off state of cylinder, by bullet
The rebound effect of spring 130, original position is sprung back to by locking device 110, is stuck in again on slide plate 310.
In due to pressure switching mechanism 100 of the invention, it is provided with ring in the lateral wall of locking device 110
The protuberance 113 of shape structure, and the protuberance 113 locking device 110 towards compressor low-pressure side transport
When dynamic, can be with the side wall clamping of accommodating chamber 120.So as to be stuck in accommodating chamber 120 by protuberance 113
On the wall of side, protuberance 113 forms plane and connects towards the end face of compressor low-pressure side and the side wall of accommodating chamber 120
Touch, thus the gap between the lateral wall of locking device 110 and the side wall of accommodating chamber 120 filled and covered,
Ultimately form the structure being fully sealed.And then, the high pressure gas at the first end face 111 of locking device 110
Body is under the barrier effect of protuberance 113, it is impossible to flow at the low pressure of second end face 112 of locking device 110,
And then would not also produce the situation that gases at high pressure leak.The sealing effect that it effectively increases pressure switching construction
Really, at the same improve compressor cylinder 300 work when volumetric efficiency, it is ensured that the efficiency of compressor.
, wherein it is desired to explanation, the main body of locking device 110 is cylindricality.It can by using pin come
Realize.By using pin as locking device 110 main body, and lateral wall around pin directly processes
It is the preparation for being capable of achieving locking device 110, its preparation process is simple, low cost to make one and enclose protuberance 113
It is honest and clean, it is easy to accomplish.
Also, protuberance 113 is preferably formed in one with the lateral wall of locking device 110.Thus, in system
During standby processing locking device 110, directly it is prepared using corresponding mould.It is effectively simplified lock
Determine the preparation technology of device 110, while also saving the preparation time of locking device 110, improve processing
Efficiency.
Further, in order to further enhance sealing effectiveness, when the protuberance 113 by locking device 110
It is convex when in being connected to the side wall of accommodating chamber 120 towards the end face at the second end face 112 of locking device 110
The lateral wall and the sidewall surfaces of accommodating chamber 120 for going out portion 113 are abutted against, to be further ensured that protuberance 113
There is no any space and the side wall of accommodating chamber 120 between, so as to further improve pressure switching mechanism 100
Being fully sealed property.
In addition, referring to Fig. 2 and Fig. 3, due to the locking device 110 in pressure switching mechanism 100 of the invention
It is placed in accommodating chamber 120, and gas pressure intensity at the first end face 111 of locking device 110 is when being high pressure,
Locking device 110 can in accommodating chamber 120 towards the low pressure lateral movement of compressor, therefore, locking device
The height l1 of 110 longitudinal section should be less than the height L1 (that is, L1 ＞ l1) of the longitudinal section of accommodating chamber 120,
The width d1 of the longitudinal section bottom of locking device 110 should be less than the bottom width of the longitudinal section of accommodating chamber 120
D1.Meanwhile, and due to locking device 110 towards compressor low pressure lateral movement when, its lateral wall set
The protuberance 113 of loop configuration can be connected on the side wall of accommodating chamber 120, therefore, locking device 110
Longitudinal section in protuberance 113 the longitudinal section width d2 longitudinal sections that should be more than accommodating chamber 120 bottom it is wide
Degree D1.That is, d2 ＞ D1 ＞ d1.
Further, referring to Fig. 4, as the another specific embodiment of pressure switching mechanism 100 of the invention,
Protuberance 113 can open up ring junction with the side wall clamping of accommodating chamber 120 by the side wall of accommodating chamber 120
The groove 122 of structure, the groove 122 has certain width so that protuberance 113 can be in groove 122
Moved up and down.Meanwhile, when the low pressure lateral movement one of the supercompressor under differential pressure action of locking device 110
After set a distance, protuberance 113 is brought into close contact towards the end face of low-pressure side with the sidewall plane of groove 122, from
And form plane bonding structure.Thus, be capable of achieving cylinder 300 work when, pressure switching mechanism 100 it is complete
Full closeding state, it is to avoid the phenomenons that gases at high pressure flow towards the low-pressure side of compressor, effectively increases pressure
The efficiency of contracting machine.
In addition, referring to Fig. 3, as a specific embodiment of pressure switching mechanism 100 of the invention, protuberance
113 with the side wall clamping of accommodating chamber 120 also can by setting boss 121 on the side wall of accommodating chamber 120, by
Boss 121 supports protuberance 113 to realize.Wherein, boss 121 is set on the side wall of accommodating chamber 120,
So that the side wall of accommodating chamber 120 forms step-like.Thus, when locking device 110 towards the low pressure of compressor
During lateral movement, protuberance 113 is directly overlapped on boss 121 towards protuberance 113 towards the end face of boss 121
End face on, with boss 121 towards the end face of protuberance 113 fit i.e. be capable of achieving protuberance 113 with hold
Receive chamber 120 side wall clamping purpose.Simple structure, it is easy to accomplish.
, wherein it is desired to explanation, due to locking device 110 under differential pressure action towards the low pressure of compressor
During lateral movement, boss 121 is used to support protuberance 113, and forms plane contact between protuberance 113,
To reach the effect of sealing.Therefore, referring to Fig. 2 to Fig. 6, with the bottom of accommodating chamber 120 and locking device
110 bottom on the basis of same level, end face and accommodating chamber 120 of the boss 121 towards protuberance 113
Bottom apart from L2 should be greater than protuberance 113 towards the end face of boss 121 and the bottom of locking device 110
Apart from l2, i.e. L2 ＞ l2.
Specifically：
When setting boss 121 to realize protuberance 113 and accommodating chamber 120 by the side wall of accommodating chamber 120
Side wall clamping when, as a kind of embodiment, referring to Fig. 2 and Fig. 3, the outside of locking device 110
Protuberance 113 set by wall is perpendicular with the axis of locking device 110 towards the end face of boss 121.
Meanwhile, boss 121 is perpendicular with the axis of accommodating chamber 120 towards the end face of protuberance 113.Namely
Say, the lateral wall of protuberance 113 forms the contact between column construction, and protuberance 113 and boss 121
Face is plane.Thus, when the cylinder 300 for being disposed proximate to pressure switching mechanism 100 of the invention does not work
When, connected without gas pressure or with low pressure at the first end face 111 of locking device 110, locking device 110
Second end face 112 then always with low pressure connect.When the cylinder 300 works, open and lead to locking device
Gas channel at 110 first end face 111, allows the first end face 111 of locking device 110 and high pressure to keep
Connection, locking device 110 is moved downward until (convex with the step surface of accommodating chamber 120 under gas load
The end face of platform 121) contact just stopping, end face and boss 121 direction of the protuberance 113 towards boss 121
It is plane contact between the end face of protuberance 113, formation is fully sealed, and can effectively prevent locking device 110
High pressure at first end face 111 improves volumetric efficiency, so as to lift compressor efficiency to low-pressure leak.
Further, referring to Fig. 5, in order to further strengthen sealing effectiveness, in above-mentioned pressure switching mechanism
On the basis of 100 embodiment, as the another specific embodiment of pressure switching mechanism 100 of the invention, its
Sealing ring 140 is may also include.Accordingly, the first ring is opened up towards the end face of protuberance 113 in boss 121
Groove, sealing ring 140 is placed in the first annular groove.Wherein, the thickness of sealing ring 140 is more than the first annular groove
Depth.Thus, when the cylinder 300 for being disposed proximate to pressure switching mechanism 100 of the invention does not work,
The first end face 111 of locking device 110 is connected without gas pressure or with low pressure, the second end of locking device 110
Face 112 connects with low pressure always.When the cylinder 300 works, first towards locking device 110 is opened
Gas channel at end face 111, allows the first end face 111 of locking device 110 and high pressure to keep connecting, and locks
Device 110 is moved downward untill sealing ring 140 is pressed against under gas load, now protuberance 113
Flat seal is formed with sealing ring 140 towards the end face of boss 121, locking device 110 can be effectively prevented
High pressure at first end face 111 improves the volumetric efficiency of transfiguration cylinder, so as to lift compressor to low-pressure leak
Efficiency.
Herein, it is necessary to explanation, also can open up the second ring in protuberance 113 towards the end face of boss 121
Groove, by the fixed placement of sealing ring 140 in the second annular groove.So as to when opening towards locking device 110 the
Gas channel at end face 111, allows the first end face 111 of locking device 110 and high pressure to keep connecting, and locks
When determining device 110 and being moved downward under gas load, untill being pressed against after sealing ring 140 by boss 121.
Now boss 121 forms flat seal towards the end face of protuberance 113 with sealing ring 140, can equally have
Effect prevents the high pressure at the first end face 111 of locking device 110 to low-pressure leak, improves the volume effect of transfiguration cylinder
Rate, so as to lift compressor efficiency.Wherein, in this embodiment, it is preferred that the thickness of sealing ring 140
Also should be slightly bigger than the depth of the second annular groove.
Wherein, in order to ensure sealing effectiveness, and ensure that sealing ring 140 will not be raised portion 113 or convex simultaneously
The end face of platform 121 squeezes broken, and it should have certain elasticity.Preferably, sealing ring 140 can be elastic rubber
Rubber gasket.
Further, referring to Fig. 6 and Fig. 7, as the another specific of pressure switching mechanism 100 of the invention
Embodiment, protuberance 113 is towards the extended line of the end face of boss 121 and the axis phase of locking device 110
It is the first predetermined angle a to hand over.That is, the lateral wall of protuberance 113 forms taper (such as：Circular cone), longitudinal section
For trapezoidal.Accordingly, boss 121 is towards in extended line and the accommodating chamber 120 of the end face of protuberance 113
It is the second predetermined angle A that axis intersects.Wherein, in order to ensure protuberance 113 towards the end face of boss 121
With boss 121 is towards the close contact between the end face of protuberance 113 or fits, the first predetermined angle a should
Equal to the second predetermined angle A.Meanwhile, the thickness L3 of boss 121 should be greater than the thickness l3 of protuberance 113,
That is, L3 ＞ l3.Also, the same bottom with accommodating chamber 120 is in same water with the bottom of locking device 110
On the basis of plane, protuberance 113 is towards the bottom of end face and the locking device 110 of cylinder side apart from l4
Less than boss 121 towards the bottom of end face and the accommodating chamber 120 of protuberance 113 apart from L4, i.e. L4 ＞ l4.
Thus, when the cylinder 300 for being disposed proximate to pressure switching mechanism 100 of the invention works, open
Gas channel towards at the first end face 111 of locking device 110, allows the first end face of locking device 110
Connected with high pressure holding at 111, locking device 110 is moved downward in gas load, outside protuberance 113
The conical surface contact of the circular conical surface of side wall and the side wall of boss 121, is between the two plane contact, has been formed
It is hermetically sealed.The high pressure at the first end face 111 of locking device 110 equally can effectively be prevented to low-pressure leak,
Volumetric efficiency is improved, so as to lift compressor efficiency.
Wherein, it should be noted that the value of the first predetermined angle a and the second predetermined angle A be all higher than or
Equal to 15 °, and less than or equal to 75 °.Meanwhile, gradient and the boss 121 of the lateral wall of protuberance 113
The gradient of side wall should be consistent completely, to ensure sealing effectiveness.
Accordingly, present invention also offers a kind of compressor, it includes as above any described pressure switching machine
Structure.It should be pointed out that compressor of the invention is capacity-varying rotary type compressor, its cylinder number for setting
At least two.That is, capacity-varying rotary type compressor of the invention is not limited to twin-tub single-stage, twin-tub twin-stage transfiguration
Rotary compressor, or three cylinder single-stages, three cylinder twin-stages or multiple cylinder multiple level capacity-varying rotary type compressor.
Referring to Fig. 8, be compressor of the invention a specific embodiment in compressor pump component section illustrate
Figure.Wherein, pressure switching mechanism 100 is arranged on the accommodating chamber opened up inside the first flange 200a of compressor
In 120.Also, in compressor of the invention, set in the first cylinder 300a of adjacent first flange 200a
It is equipped with the first roller 310a.First slide plate 320a is installed on the lateral wall of the first roller 310a.First slide plate
320a sets fluted towards the end face of pressure switching mechanism 100.Locking dress in pressure switching mechanism 100
110 first end face is put, it is adaptable in inserting groove, so as to when the first cylinder 300a does not work so that
The first end face of locking device 110 can be stuck on the first slide plate 320a.
Meanwhile, used as compressor of the invention, its compressor pump component is also correspondingly provided with first flange lid
Plate 400a, bent axle 500a, second flange 600a, the second roller 700a, the second cylinder 800a and the pump housing every
Plate 900a etc..
When by setting pressure switching mechanism 100 of the invention in the pump assembly of compressor of the invention,
When the first cylinder 300a does not work, locking device 110 blocks the first slide plate 320a, now locking device 110
First end face at connected without gas pressure or with low pressure, the second end face of locking device 110 same low pressure always
Connection.When first cylinder 300a works, open towards the gas channel at the first end face of locking device 110,
Allow locking device 110 first end face and high pressure keep connect, locking device 110 under gas load to
Lower motion just stop until being in contact with the side wall of accommodating chamber 120.Now, protuberance 113 is towards boss 121
End face and boss 121 towards being plane contact between the end of protuberance 113, formation is fully sealed.Therefore,
Can effectively prevent the high pressure at the first end face of locking device 110 to low-pressure leak, improve volumetric efficiency,
So as to lift compressor efficiency.
Embodiment described above only expresses several embodiments of the invention, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, can also make it is some deformation and
Improve, these belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is defined.
Claims (12)
1. a kind of pressure switching mechanism (100), it is characterised in that including locking device (110)；
The locking device (110) is for being placed in the accommodating chamber (120) opened up in the flange of compressor (200)
It is interior, with first end face (111) and second end face (112)；
The first end face (111) is towards cylinder (300) side of the adjacent flange (200), described
Low-pressure side of the biend (112) towards the compressor；
The lateral wall of the locking device (110) is provided with the protuberance (113) of loop configuration；And
The gas pressure intensity at first end face (111) place is high pressure, and the locking device (110) is described in
During the low pressure lateral movement of compressor, the side wall clamping of the protuberance (113) and the accommodating chamber (120).
2. pressure switching mechanism (100) according to claim 1, it is characterised in that the accommodating chamber
(120) side wall is provided with boss (121), and the boss (121) supports the protuberance (113)；
The gas pressure intensity at first end face (111) place is high pressure, and the locking device (110) is described in
During the low pressure lateral movement of compressor, end face and institute of the protuberance (113) towards the boss (121)
Boss (121) is stated to be fitted towards the end face of the protuberance (113).
3. pressure switching mechanism (100) according to claim 1, it is characterised in that the protuberance
(113) lateral wall is abutted against with the sidewall surfaces of the accommodating chamber (120).
4. pressure switching mechanism (100) according to claim 2, it is characterised in that the protuberance
(113) end face towards the boss (121) is vertical with the axis of the locking device (110)；
The boss (121) is towards in end face and the accommodating chamber (120) of the protuberance (113)
Axis is vertical.
5. pressure switching mechanism (100) according to claim 2, it is characterised in that also including sealing
Circle (140)；
The boss (121) offers the first annular groove towards the end face of the protuberance (113)；Or
The protuberance (113) offers the second annular groove towards the end face of the boss (121)；
The sealing ring (140) is placed in first annular groove or second annular groove.
6. pressure switching mechanism (100) according to claim 5, it is characterised in that the sealing ring
(140) thickness is more than first annular groove or the depth of second annular groove.
7. pressure switching mechanism (100) according to claim 5, it is characterised in that the sealing ring
(140) it is elastic caoutchouc packing ring.
8. pressure switching mechanism (100) according to claim 2, it is characterised in that the protuberance
(113) towards the boss (121) end face extended line and the locking device (110) axis
It is the first predetermined angle to intersect；
The extended line of end face of the boss (121) towards the protuberance (113) and the accommodating chamber (120)
To intersect be the second predetermined angle for axis；And
First predetermined angle is equal to second predetermined angle, and the thickness of the protuberance (113) is less than
The thickness of the boss (121).
9. pressure switching mechanism (100) according to claim 8, it is characterised in that described first is pre-
If angle and second predetermined angle are all higher than or equal to 15 °, and less than or equal to 75 °.
10. pressure switching mechanism (100) according to claim 1, it is characterised in that the protrusion
Portion (113) is integrally formed with the lateral wall of the locking device (110).
11. a kind of compressors, it is characterised in that cut including the pressure described in any one of claim 1 to 10
Converting mechanism (100)；The pressure switching mechanism (100) is arranged on the first flange (200a) of the compressor
In；
In the compressor, the is provided with first cylinder (300a) of the adjacent first flange (200a)
One roller (310a)；
The first slide plate (320a) is installed on the lateral wall of first roller (310a)；
First slide plate (320a) sets fluted towards the end face of the pressure switching mechanism (100)；
The first end face (111) of the locking device (110) in the pressure switching mechanism (100), it is adaptable to
In inserting the groove.
12. compressors according to claim 11, it is characterised in that the cylinder in the compressor is extremely
It is less two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511032902.4A CN106930947B (en) | 2015-12-30 | 2015-12-30 | pressure switching mechanism and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511032902.4A CN106930947B (en) | 2015-12-30 | 2015-12-30 | pressure switching mechanism and compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106930947A true CN106930947A (en) | 2017-07-07 |
| CN106930947B CN106930947B (en) | 2018-12-04 |
Family
ID=59444309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511032902.4A Active CN106930947B (en) | 2015-12-30 | 2015-12-30 | pressure switching mechanism and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106930947B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023993A (en) * | 2005-07-21 | 2007-02-01 | Daikin Ind Ltd | Two-stage compressor |
| CN202954971U (en) * | 2012-10-12 | 2013-05-29 | 珠海格力电器股份有限公司 | Double-cylinder variable capacity compressor |
| CN103423164A (en) * | 2012-05-22 | 2013-12-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage variable capacity compressor and control method therefor |
| CN104074763A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage enthalpy-increased rotor compressor and air conditioner and heat pump water heater with same |
| CN105020138A (en) * | 2014-04-17 | 2015-11-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-cylinder positive displacement compressor and control method |
| CN205370990U (en) * | 2015-12-30 | 2016-07-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Pressure switching mechanism and compressor |
-
2015
- 2015-12-30 CN CN201511032902.4A patent/CN106930947B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023993A (en) * | 2005-07-21 | 2007-02-01 | Daikin Ind Ltd | Two-stage compressor |
| CN103423164A (en) * | 2012-05-22 | 2013-12-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage variable capacity compressor and control method therefor |
| CN202954971U (en) * | 2012-10-12 | 2013-05-29 | 珠海格力电器股份有限公司 | Double-cylinder variable capacity compressor |
| CN104074763A (en) * | 2013-03-26 | 2014-10-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Double-stage enthalpy-increased rotor compressor and air conditioner and heat pump water heater with same |
| CN105020138A (en) * | 2014-04-17 | 2015-11-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-cylinder positive displacement compressor and control method |
| CN205370990U (en) * | 2015-12-30 | 2016-07-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Pressure switching mechanism and compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106930947B (en) | 2018-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205036534U (en) | A compressor that is used for valves part of compressor and has it | |
| CN104696193A (en) | Combined piston for air compressor | |
| CN212616341U (en) | Flow regulation structure of water pump valve | |
| CN201202625Y (en) | Seal device of diaphragm pump | |
| CN203051861U (en) | Piston type check valve | |
| CN204024964U (en) | A kind of vertical reciprocating type vacuum pump | |
| CN205370990U (en) | Pressure switching mechanism and compressor | |
| CN204921344U (en) | A suction valves for reciprocating pump | |
| CN106930947A (en) | Pressure switching mechanism and compressor | |
| CN104074646A (en) | Ventilation-type leakage-resistant oil tank cap and oil tank with same | |
| CN206268059U (en) | A kind of membrane pump pressure relief and membrane pump | |
| CN205243923U (en) | Open double suction centrifugal pump in level | |
| CN205715844U (en) | A kind of making-up air device of backflow preventer | |
| CN210424479U (en) | Gas storage tank with valve with good sealing performance | |
| CN204784886U (en) | A multifunctional valve | |
| CN102873727B (en) | A kind of micro-blasting device inside lumber | |
| CN110259597A (en) | A kind of new Joining Structure between valve mechanism cover and cylinder head | |
| CN202047969U (en) | Diaphragm pump diaphragm with double oscillating body seal rings and diaphragm pump thereof | |
| ITTO20080113U1 (en) | OIL FEED PUMP, FOR EXAMPLE FOR CHAIN SAWS LUBRICATION | |
| CN203962242U (en) | A kind of fuel tank of a kind of Ventilated anti-leakage oil tank cover and application thereof | |
| CN204458278U (en) | Miniature suction pump | |
| CN217130318U (en) | Side door double sealing reinforcing means | |
| CN203836312U (en) | Flat sealing ultralow-temperature safety valve | |
| CN204312297U (en) | A kind of compressor | |
| JP2013181474A (en) | Sealing structure for compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20181025 Address after: 519070 golden hill road, Qianshan, Zhuhai, Guangdong Applicant after: GREE ELECTRIC APPLIANCES,Inc.OF ZHUHAI Address before: 519070 9 Building (Science and technology building) 789 Jinji Road, Qianshan, Zhuhai, Guangdong Applicant before: GREE GREEN REFRIGERATION TECHNOLOGY CENTER Co.,Ltd. OF ZHUHAI |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |