CN106930947B - pressure switching mechanism and compressor - Google Patents
pressure switching mechanism and compressor Download PDFInfo
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- CN106930947B CN106930947B CN201511032902.4A CN201511032902A CN106930947B CN 106930947 B CN106930947 B CN 106930947B CN 201511032902 A CN201511032902 A CN 201511032902A CN 106930947 B CN106930947 B CN 106930947B
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- face
- protrusion
- locking device
- compressor
- switching mechanism
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- 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
Abstract
The invention discloses a kind of pressure switching mechanism and compressors, and wherein pressure switching mechanism includes locking device；Locking device has first end face and second end face for being placed in the accommodating chamber opened up in the flange of compressor；Cylinder side of the first end face towards adjacent flanges, low-pressure side of the second end face towards compressor；The lateral wall of locking device is provided with the protrusion of ring structure；And the gas pressure intensity at first end face is high pressure, and when the low-pressure side of locking device towards compressor moves, the side wall clamping of protrusion and accommodating chamber.The case where as a result, under the barrier action of protrusion, high pressure gas cannot flow to the low-pressure side of compressor, this also avoids high pressure gas leakage.Finally efficiently solving traditional switching mechanism influences compressor seal effect, the problem of being easy to cause high pressure gas to leak, reduce the efficiency of compressor.
Description
Technical field
The present invention relates to Compressor Technology fields, more particularly to a kind of pressure switching mechanism and compressor.
Background technique
Currently, twin-tub single-stage or twin-tub twin-stage rotary positive displacement compressor, are all by its internal switching mechanism being arranged
Control the working condition of one of cylinder, come realize compressor discharge capacity change.Wherein, switching construction generally includes band
Lower slide plate, pin, pin hole and the spring of card slot.Pin lower end surface is connected to low pressure air suction port, acts on pin by changing
The stream pressure of end face is nailed on, so that pin blocks slide plate or is detached from slide plate, to realize the working condition of cylinder.Specifically,
When the stream pressure of pin upper surface is low pressure, cylinder is in idle state；When the stream pressure of pin upper surface is
When high pressure, then cylinder works normally.
Pin feature in traditional switching mechanism is usually the cylindrical-shaped structure that upper end is small, lower end is big.Correspondingly, pin
Kong Zewei through hole shape.By the way that pin is placed in pin hole, and being equipped with pin and pin hole as clearance fit.By
This, when the air-flow of pin upper surface is high pressure, lower slide plate is contacted with the lower roller of compressor, the corresponding normal work of cylinder
Make.At this point, this allows for pin since the lower end surface of pin is connected to lower flange lid panel notches (i.e. low pressure air suction port) always
The high pressure of upper end surface affects the sealing effect between pin lower end surface and lower flange cover board end face to flowing at the low pressure of lower end surface
Fruit is easy to cause high pressure gas to leak, and reduces the efficiency of compressor.
Summary of the invention
Based on this, it is necessary to influence compressor seal effect for traditional switching mechanism, be easy to cause outside high pressure gas
The problem of letting out, reducing the efficiency of compressor provides a kind of pressure switching mechanism and compressor.
A kind of pressure switching mechanism that purpose provides to realize the present invention, including locking device；
The locking device has first end face and second end for being placed in the accommodating chamber opened up in the flange of compressor
Face；
Cylinder side of the first end face towards the adjacent flange, low pressure of the second end face towards the compressor
Side；
The lateral wall of the locking device is provided with the protrusion of ring structure；And
Gas pressure intensity at the first end face is high pressure, and the low-pressure side of the locking device towards the compressor moves
When, the side wall of the protrusion and the accommodating chamber is clamped.
The side wall of the accommodating chamber is provided with boss in one of the embodiments, and the boss supports the protrusion；
Gas pressure intensity at the first end face is high pressure, and the low-pressure side of the locking device towards the compressor moves
When, the protrusion fits towards the end face of the boss and the end face of the boss towards the protrusion.
The lateral wall of the protrusion and the sidewall surfaces of the accommodating chamber abut against in one of the embodiments,.
The protrusion is towards the end face of the boss and the central axes of the locking device in one of the embodiments,
Vertically；
The end face of the boss towards the protrusion is vertical with the central axes of the accommodating chamber.
It in one of the embodiments, further include sealing ring；
The end face of the boss towards the protrusion offers the first annular groove, and the sealing ring is placed in first annular groove
In；Or
The end face of the protrusion towards the boss offers the second annular groove, and the sealing ring is placed in second annular groove
In.
The thickness of the sealing ring is greater than the depth of first annular groove or second annular groove in one of the embodiments,
Degree.
The sealing ring is elastic rubber washer in one of the embodiments,.
Extended line and the locking device of the protrusion towards the end face of the boss in one of the embodiments,
Central axes intersection be the first predetermined angle；
The extended line of the boss towards the end face of the protrusion intersects with the central axes of the accommodating chamber for second in advance
If angle；And
First predetermined angle is equal to second predetermined angle, and the thickness of the protrusion is less than the thickness of the boss
Degree.
First predetermined angle and second predetermined angle are all larger than equal to 15 ° in one of the embodiments, and
Less than or equal to 75 °.
The lateral wall of the protrusion and the locking device is integrally formed in one of the embodiments,.
Correspondingly, the present invention also provides a kind of compressor, including as above any pressure switching mechanism；The pressure
Power switching mechanism is arranged in the first flange of the compressor；
In the compressor, the first roller is provided in the first cylinder of the adjacent first flange；
The first slide plate is installed on the lateral wall of first roller；
First slide plate is fluted towards the setting of the end face of the pressure switching mechanism；
The first end face of locking device in the pressure switching mechanism, is suitable for insertion into the groove.
Cylinder at least two in the compressor in one of the embodiments,.
Above-mentioned pressure switching mechanism the utility model has the advantages that
Its protrusion that ring structure is arranged by the lateral wall of the locking device in the flange for being located at compressor, works as lock
Determining gas pressure intensity at the first end face of device is high pressure, locking device towards compressor low-pressure side movement when, protrusion with
The side wall of the accommodating chamber of pressure switching mechanism is clamped.This allow for protrusion at this time towards compressor low-pressure side end face and appearance
Receive chamber side wall be plane contact, thus realize filled by protrusion and cover the lateral wall of locking device and the side wall of accommodating chamber
Between gap purpose, with reach improve pressure switching mechanism sealing effect.As a result, under the barrier action of protrusion,
The case where high pressure gas cannot flow to the low-pressure side of compressor, this also avoids high pressure gas leakage.Finally efficiently solve
Traditional switching mechanism influences compressor seal effect, the problem of being easy to cause high pressure gas to leak, reduce the efficiency of compressor.
Detailed description of the invention
Fig. 1 is the sectional view of a specific embodiment of pressure switching mechanism of the invention；
Fig. 2 is the sectional view of a specific embodiment of the locking device in pressure switching mechanism of the invention；
Fig. 3 is the sectional view of a specific embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 4 is the sectional view of the another specific embodiment of pressure switching mechanism of the invention；
Fig. 5 is the sectional view of the another specific embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 6 is the sectional view of the still another embodiment of the locking device in pressure switching mechanism of the invention；
Fig. 7 is the sectional view of the still another embodiment of the accommodating chamber in pressure switching mechanism of the invention；
Fig. 8 is the sectional view of a specific embodiment of the compressor pump component in compressor of the invention.
Specific embodiment
To keep technical solution of the present invention clearer, the present invention is made below in conjunction with drawings and the specific embodiments further detailed
It describes in detail bright.
Referring to Fig. 1 and Fig. 2, the specific embodiment as pressure switching mechanism 100 of the invention comprising locking device
110.Wherein, in the accommodating chamber 120 opened up inside the flange 200 that locking device 110 is used to be placed in compressor, there is 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
When not working close to the cylinder 300 of flange 200, first end face 111 is stuck on the slide plate 310 in cylinder 300, at this time first end face
At 111 without gas pressure intensity or be low-pressure gas；When the work of cylinder 300 close to flange 200, first end face 111 and slide plate 310
Between airflow channel open, the gas pressure intensity at first end face 111 is high pressure gas.Meanwhile the second end of locking device 110
Face 112 then towards the low-pressure side of compressor (that is, 400 side of flange plate of the adjacent flange 200), passes through flange plate 400
On the low pressure venthole holding of groove 410 and compressor be connected to.As a result, when the cylinder 300 close to the flange 200 does not work
When, the gas pressure intensity at the first end face 111 of locking device 110 is less than or equal to the gas pressure intensity at second end face 112, locking
Device 110 is fixed.When the work of cylinder 300 close to the flange 200, then at the first end face 111 of locking device 110
Gas pressure intensity is greater than the gas pressure intensity at second end face 112, under differential pressure action, low pressure of the locking device 110 towards compressor
Side movement.Meanwhile it being also set up between the second end face of locking device 110 112 and the flange plate 400 of the adjacent flange 200
There is spring 130, for by the rebound effect of spring 130, locking device 110 being rebounded when 300 power cut-off state of cylinder
To original position, it is stuck on slide plate 310 again.
Due to being provided with ring structure in the lateral wall of locking device 110 in pressure switching mechanism 100 of the invention
Protrusion 113, and the protrusion 113 locking device 110 towards compressor low-pressure side movement when, can be with accommodating chamber
120 side wall clamping.To be stuck on the side wall of accommodating chamber 120 by protrusion 113, protrusion 113 is towards compressor low pressure
The end face of side and the side wall of accommodating chamber 120 form plane contact, thus by the lateral wall of locking device 110 and accommodating chamber 120
Gap filling and covering between side wall, ultimately form the structure being fully sealed.In turn, positioned at the first end of locking device 110
High pressure gas at face 111 cannot flow to the low of the second end face 112 of locking device 110 under the barrier effect of protrusion 113
At pressure, and then it would not also generate the case where high pressure gas leaks.Its sealing effect for effectively increasing pressure switching construction, together
When improve compressor cylinder 300 work when volumetric efficiency, ensure that the efficiency of compressor.
Wherein, it should be noted that the main body of locking device 110 is cylindricality.It can be realized by using pin.Pass through
Main body using pin as locking device 110, and protrusion 113 is enclosed around the direct processing and fabricating one of the lateral wall of pin
Realize the preparation of locking device 110, preparation process is simple, low in cost, it is easy to accomplish.
Also, protrusion 113 and the lateral wall of locking device 110 are preferably integrally formed.As a result, in preparation processing locking
When device 110, directlys adopt corresponding mold and prepared.Its preparation process for being effectively simplified locking device 110, together
When also save the preparation time of locking device 110, improve processing efficiency.
Further, in order to further enhance sealing effect, when by the protrusion 113 of locking device 110 towards locking
When end face at the second end face 112 of device 110 is connected in the side wall of accommodating chamber 120, the lateral wall of protrusion 113 and receiving
The sidewall surfaces of chamber 120 abut against, and do not have any gap to be further ensured that between protrusion 113 and the side wall of accommodating chamber 120,
To further increase the being fully sealed property of pressure switching mechanism 100.
In addition, referring to figs. 2 and 3, since the locking device 110 in pressure switching mechanism 100 of the invention is placed in receiving
In chamber 120, and when the gas pressure intensity at the first end face of locking device 110 111 is high pressure, locking device 110 can be
It is moved in accommodating chamber 120 towards the low-pressure side of compressor, therefore, the height l1 of the longitudinal section of locking device 110, which should be less than, to be held
Receive chamber 120 longitudinal section height L1 (that is, L1 > l1), the width d1 of the longitudinal section bottom of locking device 110 should be less than and hold
Receive chamber 120 longitudinal section bottom width D1.Meanwhile and due to locking device 110 towards compressor low-pressure side movement when,
The protrusion 113 of the ring structure of lateral wall setting can be connected on the side wall of accommodating chamber 120, therefore, locking device 110
The longitudinal section width d2 of protrusion 113 should be greater than the bottom width D1 of the longitudinal section of accommodating chamber 120 in longitudinal section.That is, d2 >
D1 > d1.
Further, referring to fig. 4, the another specific embodiment as pressure switching mechanism 100 of the invention, protrusion
113 can be by opening up the groove 122 of ring structure, the groove with the clamping of the side wall of accommodating chamber 120 on the side wall of accommodating chamber 120
122 have certain width, and protrusion 113 is moved up and down in groove 122.Meanwhile when locking device 110
Under differential pressure action after the low-pressure side movement certain distance of supercompressor, end face and groove 122 of the protrusion 113 towards low-pressure side
Sidewall plane fit closely, to form plane bonding structure.Thus, it can be achieved that when cylinder 300 works, pressure switching mechanism
The phenomenon that 100 completely enclosed state, the low-pressure side for avoiding high pressure gas towards compressor flows, effectively increase compressor
Efficiency.
In addition, referring to Fig. 3, as a specific embodiment of pressure switching mechanism 100 of the invention, protrusion 113 and appearance
Receive chamber 120 side wall clamping can also by the side wall of accommodating chamber 120 be arranged boss 121, by boss 121 support protrusion
113 realize.Wherein, on the side wall of accommodating chamber 120 be arranged boss 121 so that the side wall of accommodating chamber 120 formed it is step-like.
As a result, when low-pressure side movement of the locking device 110 towards compressor, protrusion 113 is directly overlapped towards the end face of boss 121
In boss 121 towards on the end face of protrusion 113, fitting with the end face of boss 121 towards protrusion 113 can be realized protrusion
The purpose that the side wall of portion 113 and accommodating chamber 120 is clamped.It has the advantages of simple structure and easy realization.
Wherein, it should be noted that since locking device 110 moves under differential pressure action towards the low-pressure side of compressor
When, boss 121 is used to support protrusion 113, and forms plane contact between protrusion 113, to achieve the effect that sealing.Cause
This, referring to fig. 2 to Fig. 6, by the bottom end of accommodating chamber 120 and the bottom end of locking device 110 on the basis of same level, boss
121 should be greater than protrusion 113 towards the end of boss 121 towards the end face of protrusion 113 and the bottom end distance L2 of accommodating chamber 120
The bottom end distance l2 in face and locking device 110, that is, L2 > l2.
It is specific:
When by boss 121 being arranged on the side wall of accommodating chamber 120 to realize the side wall of protrusion 113 Yu accommodating chamber 120
Clamping when, as an embodiment, referring to figs. 2 and 3, protrusion 113 set by the lateral wall of locking device 110
It is perpendicular towards the end face of boss 121 and the central axes of locking device 110.Meanwhile boss 121 is towards the end face of protrusion 113
It is perpendicular with the central axes of accommodating chamber 120.That is, the lateral wall of protrusion 113 forms column construction, and protrusion 113
Contact surface between boss 121 is plane.As a result, when the cylinder 300 for being disposed proximate to pressure switching mechanism 100 of the invention
When not working, it is connected at the first end face 111 of locking device 110 without gas pressure or with low pressure, the second end of locking device 110
Face 112 is then connected to low pressure always.When the cylinder 300 work, opens and lead at the first end face 111 of locking device 110
Airflow channel allows the first end face 111 of locking device 110 and high pressure to keep being connected to, locking device 110 under gas load to
Lower movement is until contact just stopping with the step surface (end face of boss 121) of accommodating chamber 120, protrusion 113 is towards boss 121
Towards being plane contact between the end face of protrusion 113, formation is fully sealed, and can effectively prevent locking device for end face and boss 121
High pressure at 110 first end face 111 improves volumetric efficiency, to promote compressor efficiency to low-pressure leak.
Further, referring to Fig. 5, in order to further enhance sealing effect, in the reality of above-mentioned pressure switching mechanism 100
On the basis of applying example, as the another specific embodiment of pressure switching mechanism 100 of the invention, may also include has sealing ring
140.Correspondingly, opening up the first annular groove in the end face of boss 121 towards protrusion 113, sealing ring 140 is placed in the first annular groove
In.Wherein, the thickness of sealing ring 140 is greater than the depth of the first annular groove.As a result, when being disposed proximate to pressure switching machine of the invention
When the cylinder 300 of structure 100 does not work, the first end face 111 of locking device 110 is connected to without gas pressure or with low pressure, locking dress
110 second end face 112 is set to be connected to low pressure always.When the cylinder 300 work, opens and lead to the first of locking device 110
Airflow channel at end face 111 allows the first end face 111 of locking device 110 to keep being connected to high pressure, and locking device 110 is in gas
Moved downward under body active force until being pressed against sealing ring 140, at this time protrusion 113 towards boss 121 end face with it is close
Seal 140 forms flat seal, can effectively prevent the high pressure at the first end face 111 of locking device 110 to low-pressure leak, improves
The volumetric efficiency of transfiguration cylinder, to promote compressor efficiency.
Herein, it should be noted that the second annular groove can also be opened up in the end face of protrusion 113 towards boss 121, will sealed
Circle 140 is fixedly placed in the second annular groove.The airflow channel at first end face 111 to lead to locking device 110 when opening,
The first end face 111 of locking device 110 is allowed to keep being connected to high pressure, when locking device 110 moves downward under gas load,
Until being pressed against after sealing ring 140 by boss 121.Boss 121 is formed towards the end face of protrusion 113 and sealing ring 140 at this time
Flat seal equally can effectively prevent the high pressure at the first end face 111 of locking device 110 to low-pressure leak, improve transfiguration
The volumetric efficiency of cylinder, to promote compressor efficiency.Wherein, in this embodiment, it is preferred that the thickness of sealing ring 140 is also answered
Slightly larger than the depth of the second annular groove.
Wherein, in order to guarantee sealing effect, and guarantee that sealing ring 140 will not be raised the end in portion 113 or boss 121 simultaneously
Face is squeezed broken, should have certain elasticity.Preferably, sealing ring 140 can be elastic rubber washer.
Further, referring to Fig. 6 and Fig. 7, as the still another embodiment of pressure switching mechanism 100 of the invention,
The extended line of protrusion 113 towards the end face of boss 121 intersects with the central axes of locking device 110 for the first predetermined angle a.
That is, the lateral wall of protrusion 113 forms taper (such as: circular cone), longitudinal section is trapezoidal.Correspondingly, boss 121 is towards protrusion
The extended line of 113 end face intersects with the central axes of accommodating chamber 120 for the second predetermined angle A.Wherein, in order to guarantee protrusion
113 towards the close contact between the end face of protrusion 113 or are bonded towards the end face of boss 121 with boss 121, and first is default
Angle a should be equal to the second predetermined angle A.Meanwhile the thickness L3 of boss 121 should be greater than the thickness l3 of protrusion 113, that is, L3
> l3.Also, on the basis of being equally in same level by the bottom end of the bottom end of accommodating chamber 120 and locking device 110, protrusion
113 are less than boss 121 towards the end of protrusion 113 towards the end face of cylinder side and the bottom end distance l4 of locking device 110
The bottom end distance L4 in face and accommodating chamber 120, i.e. L4 > l4.
As a result, when the cylinder 300 for being disposed proximate to pressure switching mechanism 100 of the invention works, opens and lead to locking
Airflow channel at the first end face 111 of device 110 allows at the first end face 111 of locking device 110 and is connected to high pressure holding,
Locking device 110 is moved downward in gas load, the circle of the side wall of the circular conical surface and boss 121 of the lateral wall of protrusion 113
Taper-face contact is between the two plane contact, and formation is fully sealed.It equally can effectively prevent the first end of locking device 110
High pressure at face 111 improves volumetric efficiency, to promote compressor efficiency to low-pressure leak.
Wherein, it should be noted that the value of the first predetermined angle a and the second predetermined angle A are all larger than equal to 15 °, and
Less than or equal to 75 °.Meanwhile the gradient of the lateral wall of protrusion 113 and the gradient of the side wall of boss 121 should be kept completely
Unanimously, to ensure sealing effect.
Correspondingly, the present invention also provides a kind of compressors comprising as above any pressure switching mechanism.It should
, it is noted that compressor of the invention is capacity-varying rotary type compressor, the cylinder number at least two of setting.That is, this hair
Bright capacity-varying rotary type compressor is not limited to twin-tub single-stage, twin-tub twin-stage capacity-varying rotary type compressor, be also possible to three cylinder single-stages,
Three cylinder twin-stages or multiple cylinder multiple level capacity-varying rotary type compressor.
It is the compressor pump component diagrammatic cross-section in a specific embodiment of compressor of the invention referring to Fig. 8.Its
In, pressure switching mechanism 100 is arranged in the accommodating chamber 120 opened up inside the first flange 200a of compressor.Also, in this hair
In bright compressor, the first roller 310a is provided in the first cylinder 300a of adjacent first flange 200a.First roller 310a
Lateral wall on the first slide plate 320a is installed.First slide plate 320a is fluted towards the setting of the end face of pressure switching mechanism 100.
The first end face of locking device 110 in pressure switching mechanism 100, is suitable for insertion into groove, thus as the first cylinder 300a
When not working, the first end face of locking device 110 is stuck on the first slide plate 320a.
Meanwhile as compressor of the invention, compressor pump component be also correspondingly provided with first flange cover board 400a,
Crankshaft 500a, second flange 600a, the second roller 700a, the second cylinder 800a and pump partition plate 900a etc..
When by the way that pressure switching mechanism 100 of the invention is arranged in the pump assembly of compressor of the invention, when
When one cylinder 300a does not work, locking device 110 blocks the first slide plate 320a, at this time at the first end face of locking device 110 without
Gas pressure is connected to low pressure, and the second end face of locking device 110 is connected to low pressure always.When first cylinder 300a works,
The airflow channel at the first end face for leading to locking device 110 is opened, the first end face of locking device 110 and high pressure is allowed to keep connecting
Logical, locking device 110 moves downward under gas load just to be stopped until being in contact with the side wall of accommodating chamber 120.At this point, convex
Towards the end face of boss 121 and boss 121 towards being plane contact between the end of protrusion 113, formation is fully sealed in portion 113 out.
Therefore, it can effectively prevent the high pressure at the first end face of locking device 110 to low-pressure leak, volumetric efficiency be improved, to mention
Contracting function of boosting effect.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (12)
1. a kind of pressure switching mechanism (100), which is characterized in that including locking device (110)；
The locking device (110) is used to be placed in the accommodating chamber (120) opened up in the flange (200) of compressor, has first
End face (111) and second end face (112)；
The first end face (111) is towards cylinder (300) side of the adjacent flange (200), second end face (112) direction
The low-pressure side of the compressor；
The lateral wall of the locking device (110) is provided with the protrusion (113) of ring structure；And
Gas pressure intensity at the first end face (111) is high pressure, low pressure of the locking device (110) towards the compressor
When side moves, the side wall of the protrusion (113) and the accommodating chamber (120) is clamped.
2. pressure switching mechanism (100) according to claim 1, which is characterized in that the side wall of the accommodating chamber (120) is set
It is equipped with boss (121), the boss (121) supports the protrusion (113)；
Gas pressure intensity at the first end face (111) is high pressure, low pressure of the locking device (110) towards the compressor
When side moves, the protrusion (113) is towards the end face of the boss (121) and the boss (121) towards the protrusion
(113) end face fits.
3. pressure switching mechanism (100) according to claim 1, which is characterized in that the lateral wall of the protrusion (113)
It is abutted against with the sidewall surfaces of the accommodating chamber (120).
4. pressure switching mechanism (100) according to claim 2, which is characterized in that the protrusion (113) is described in
The end face of boss (121) is vertical with the central axes of the locking device (110)；
The end face of the boss (121) towards the protrusion (113) is vertical with the central axes of the accommodating chamber (120).
5. pressure switching mechanism (100) according to claim 2, which is characterized in that further include sealing ring (140)；
The end face of boss (121) towards the protrusion (113) offers the first annular groove, and the sealing ring (140) is placed in
In first annular groove；Or
The end face of protrusion (113) towards the boss (121) offers the second annular groove, and the sealing ring (140) is placed in
In second annular groove.
6. pressure switching mechanism (100) according to claim 5, which is characterized in that the thickness of the sealing ring (140) is big
In the depth of first annular groove or second annular groove.
7. pressure switching mechanism (100) according to claim 5, which is characterized in that the sealing ring (140) is elastic rubber
Rubber gasket.
8. pressure switching mechanism (100) according to claim 2, which is characterized in that the protrusion (113) is described in
The extended line of the end face of boss (121) intersects with the central axes of the locking device (110) for the first predetermined angle；
The extended line and the central axes phase of the accommodating chamber (120) of end face of the boss (121) towards the protrusion (113)
Handing over is the second predetermined angle；And
First predetermined angle is equal to second predetermined angle, and the thickness of the protrusion (113) is less than the boss
(121) thickness.
9. pressure switching mechanism (100) according to claim 8, which is characterized in that first predetermined angle and described
Second predetermined angle is all larger than equal to 15 °, and is less than or equal to 75 °.
10. pressure switching mechanism (100) according to claim 1, which is characterized in that the protrusion (113) with it is described
The lateral wall of locking device (110) is integrally formed.
11. a kind of compressor, which is characterized in that including the described in any item pressure switching mechanisms (100) of claims 1 to 10；
The pressure switching mechanism (100) is arranged in the first flange (200a) of the compressor；
In the compressor, the first roller is provided in the first cylinder (300a) of the adjacent first flange (200a)
(310a)；
The first slide plate (320a) is installed on the lateral wall of first roller (310a)；
First slide plate (320a) is fluted towards the setting of the end face of the pressure switching mechanism (100)；
The first end face (111) of locking device (110) in the pressure switching mechanism (100), is suitable for insertion into the groove
In.
12. compressor according to claim 11, which is characterized in that the cylinder at least two in the compressor.
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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511032902.4A CN106930947B (en) | 2015-12-30 | 2015-12-30 | pressure switching mechanism and compressor |
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| CN106930947A CN106930947A (en) | 2017-07-07 |
| CN106930947B true CN106930947B (en) | 2018-12-04 |
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| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007023993A (en) * | 2005-07-21 | 2007-02-01 | Daikin Ind Ltd | Two-stage compressor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 varying 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 |
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| CN106930947A (en) | 2017-07-07 |
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