CN109162919A - A kind of anti-vacuum evacuation device of screw compressor - Google Patents
A kind of anti-vacuum evacuation device of screw compressor Download PDFInfo
- Publication number
- CN109162919A CN109162919A CN201811315603.5A CN201811315603A CN109162919A CN 109162919 A CN109162919 A CN 109162919A CN 201811315603 A CN201811315603 A CN 201811315603A CN 109162919 A CN109162919 A CN 109162919A
- Authority
- CN
- China
- Prior art keywords
- screw compressor
- valve body
- pressure
- fixed scroll
- evacuation device
- 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.)
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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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
- F04C18/0269—Details concerning the involute wraps
- F04C18/0292—Ports or channels located in the wrap
-
- 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
Abstract
The present invention discloses a kind of anti-vacuum evacuation device of screw compressor, include: shell and is set to the intracorporal noise reduction lid of shell, floating seal assembly, orbiter, fixed scroll and driving assembly, there is enclosure space in shell, the enclosure space, which is isolated, is divided into suction plenum and discharge plenum, floating seal assembly is used to seal noise reduction lid and fixed scroll, intermediate compression chamber is formed between orbiter and fixed scroll, driving assembly drives orbiter rotation, further includes: anti-vacuum pumping valve.The present invention discloses a kind of anti-device vacuumized of screw compressor, when the intracavitary pressure value of pressure of inspiration(Pi) is too low, discharge plenum is connected to suction plenum, is effectively prevented screw compressor failure as caused by vacuumizing, and is more suitable for the low pressure screw compressor using noise reduction lid.
Description
Technical field
The present invention relates to a kind of screw compressors, and in particular to a kind of anti-vacuum evacuation device of screw compressor.
Background technique
Screw compressor is often combined with evaporator etc., is applied to refrigeration system, when evaporator or other valve member pipeline obstructions
When, it is too low to will lead to pressure of inspiration(Pi), when the pressure is too low, will cause excessive discharge temperature, lubricating oil missing abrasion, and electrical member
Part vacuum is beaten arc and is burnt.It is one of most common failure of screw compressor.
To solve this problem, pressure protector is usually installed in system, but this solution increases the costs of system.
In the prior art, such as application No. is: 200680001600.3, apply title are as follows: for preventing scroll compressor
The middle device for generating vacuum, discloses a kind of anti-vacuum evacuation device.When pressure of inspiration(Pi) is lower than setting value, the pressure of intermediate compression chamber
Power is lower than setting value, and resilient element urges valve member is mobile, and the refrigerant in pressure at expulsion area flows into the suction zone being vortexed by bypass line,
To prevent from vacuumizing.
But there is also disadvantages, the pressure of intermediate compression chamber is in 360 degree that a press cycles rotate, period wave
It is dynamic, greatly reduce the precision of setup pressure value.The technical solution is only applicable to the screw compressor of no noise reduction lid structure.
Summary of the invention
In order to solve the above-mentioned technical problem, the invention proposes a kind of anti-vacuum evacuation devices of screw compressor.
In order to achieve the above object, technical scheme is as follows:
A kind of anti-vacuum evacuation device of screw compressor, comprising: shell and be set to the intracorporal noise reduction lid of shell, float it is close
Sealing assembly, orbiter, fixed scroll and driving assembly, shell is interior to have enclosure space, which, which is isolated, is divided into suction
Atmospheric pressure chamber and discharge plenum, floating seal assembly are used to seal noise reduction lid and fixed scroll, orbiter and quiet vortex
Intermediate compression chamber is formed between disk, driving assembly drives orbiter rotation, further includes:
Anti- vacuum pumping valve comprising:
Valve body is set on fixed scroll；
Valve chamber is set in valve body, is communicated by the first suction hole on valve body with suction plenum, by valve body
Exhaust passage on gas vent and fixed scroll is communicated with discharge plenum, by back pressure hole on valve body and fixed scroll
Backpressure passage is communicated with back pressure cavity, and back pressure cavity is communicated with intermediate compression chamber；
Spool is set in valve chamber, and the side of spool is by elastic component and valve body elastic connection, the opposite other side with
The valve body one side wall for being provided with back pressure hole is oppositely arranged, and an intermediate channel is additionally provided on spool；
When the intracavitary pressure value P s of pressure of inspiration(Pi) be less than setting value when, spool under the action of the elastic member so that on valve body
The first suction hole, intermediate channel and gas vent communicate, the intracavitary refrigerant of pressure at expulsion pass through the first suction hole, intermediate channel
And gas vent flows into suction plenum；
When the intracavitary pressure value P s of pressure of inspiration(Pi) is greater than the set value, spool is under the action of Pressure in Back-pressure Cavity, so that valve
The first suction hole on body is not communicated with gas vent, and discharge plenum is isolated with suction plenum.
The present invention discloses a kind of anti-device vacuumized of screw compressor, when the intracavitary pressure value of pressure of inspiration(Pi) is too low
When, discharge plenum is connected to suction plenum, is effectively prevented screw compressor failure as caused by vacuumizing, is more suitable for
Using the low pressure screw compressor of noise reduction lid.
Based on the above technical solution, following improvement can also be done:
As a preferred option, installation cavity is equipped on valve body, elastic component is set in installation cavity, and is equipped on valve body
Second suction hole, the second suction hole communicate installation cavity with suction plenum.
Using the above preferred scheme, the pressure of spool two sides is the pressure of suction plenum and back pressure cavity respectively, without
It is the pressure of intermediate compression chamber, greatly improves the precision for pushing the setting pressure of spool movement.
As a preferred option, the pore size of the second suction hole is not more than the pore size of back pressure hole.
Using the above preferred scheme, push spool movement more stable.
As a preferred option, valve body is equipped with the mounting blocks of one with its detachable connection, and back pressure hole is set to this
On mounting blocks.
Using the above preferred scheme, made by replacing different mounting blocks to replace the back pressure hole in different size aperture
Its demand for being more able to satisfy different screw compressors.
As a preferred option, intermediate channel is the annular groove or through-hole being set on spool.
Using the above preferred scheme, the intermediate channel technique that annular groove is arranged is simpler, and the centre that through-hole is arranged is logical
Road is more direct.
As a preferred option, exhaust passage is set in parallel with backpressure passage.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
As a preferred option, floating seal assembly is set to back pressure cavity.
Using the above preferred scheme, performance is more stable.
As a preferred option, back pressure cavity is communicated by the intercommunicating pore on fixed scroll with intermediate compression chamber.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
As a preferred option, exhaust passage and backpressure passage are set to the same side of fixed scroll, and intercommunicating pore is arranged
In the other side opposite with exhaust passage and backpressure passage on fixed scroll.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
As a preferred option, the intracavitary pressure value of pressure of inspiration(Pi) is Ps, and the pressure Pf of back pressure cavity is KPs, K > 1.
Using the above preferred scheme, the precision for pushing the setting pressure of spool movement is greatly improved.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the anti-vacuum evacuation device of screw compressor provided in an embodiment of the present invention.
Fig. 2 is the portion A partial enlarged view in Fig. 1.
Fig. 3 is the pressure comparison figure of the pressure VS intermediate compression chamber of back pressure cavity.
Wherein: 1 shell, 2 noise reduction lids, 3 floating seal assemblies, 4 orbiters, 5 fixed scrolls, 51 exhaust passages, 52 back
Pressure passageway, 53 intercommunicating pores, 6 anti-vacuum pumping valves, 61 valve bodies, 611 first suction holes, 612 second suction holes, 613 gas vents, 614
Back pressure hole, 62 valve chambers, 63 spools, 631 annular grooves, 6311 opening portions, 6312 interconnecting parts, 7 elastic components, 8 mounting blocks；
A suction plenum, b discharge plenum, c intermediate compression chamber, d back pressure cavity, e installation cavity.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
In order to reach the purpose of the present invention, in a kind of some of embodiments of the anti-vacuum evacuation device of screw compressor,
As illustrated in fig. 1 and 2, a kind of anti-vacuum evacuation device of screw compressor includes: shell 1 and the noise reduction lid being set in shell 1
2, floating seal assembly 3, orbiter 4, fixed scroll 5 and driving assembly (not shown), shell 1 is interior to have closing empty
Between, which, which is isolated, is divided into suction plenum a and discharge plenum b, floating seal assembly 3 be used for noise reduction lid 2 with
Fixed scroll 5 seals, and intermediate compression chamber c is formed between orbiter 4 and fixed scroll 5, and driving assembly drives 4 turns of orbiter
It is dynamic, further includes:
Anti- vacuum pumping valve 6 comprising:
Valve body 61 is set on fixed scroll 5；
Valve chamber 62 is set in valve body 61, is communicated by the first suction hole 611 on valve body 61 with suction plenum a, is led to
The exhaust passage 51 on gas vent 613 and fixed scroll 5 crossed on valve body 61 is communicated with discharge plenum b, by valve body 61
Back pressure hole 614 and fixed scroll 5 on backpressure passage 52 communicated with back pressure cavity d, back pressure cavity d is communicated with intermediate compression chamber c；
Spool 63 is set in valve chamber 62, and the side of spool 63 passes through elastic component 7 and 61 elastic connection of valve body, phase
The other side is oppositely arranged with 61 one side wall of valve body for being provided with back pressure hole 614, an intermediate channel is additionally provided on spool 63；
When the pressure value P s in suction plenum a is less than setting value, spool 63 is under the action of elastic component 7, so that valve
The first suction hole 611, intermediate channel and gas vent 613 on body 61 communicate, and the refrigerant in discharge plenum b is inhaled by first
Stomata 611, intermediate channel and gas vent 613 flow into suction plenum a；
When the pressure value P s in suction plenum a is greater than the set value, spool 63 makes under the action of back pressure cavity d pressure
The first suction hole 611 obtained on valve body 61 is not communicated with gas vent 613, and discharge plenum b is isolated with suction plenum a.
The present invention discloses a kind of anti-device vacuumized of screw compressor, when the pressure value in suction plenum a is too low
When, discharge plenum b is connected to suction plenum a, is effectively prevented screw compressor failure as caused by vacuumizing, more applicable
In the low pressure screw compressor using noise reduction lid 2.
In order to further optimize implementation result of the invention, in other embodiment, remaining feature technology phase
Together, the difference is that, installation cavity d is equipped on valve body 61, elastic component 7 is set in installation cavity e, and is equipped on valve body 61
Second suction hole 612, the second suction hole 612 communicate installation cavity e with suction plenum a.
Using the above preferred scheme, as shown in figure 3, it is certain model screw compressor, among the pressure VS of back pressure cavity d
The pressure of compression chamber c.And the fluctuating range of intermediate compression chamber c pressure is 3.15 times of its back pressure cavity d pressure fluctuations amplitude.This Shen
Please be as illustrated in fig. 1 and 2, the pressure of the left and right sides of spool 63 is the pressure of suction plenum a and the pressure of back pressure cavity d respectively, and
It is not the pressure of intermediate compression chamber c, greatly improves the precision for the setting pressure for pushing spool 63 to act." main shaft rotation in its Fig. 3
Gyration " refers to the transmission main shaft of driving assembly.
Further, on the basis of upper one embodiment, the pore size of the second suction hole 612 is not more than back pressure hole 614
Pore size.
Using the above preferred scheme, promotion spool 63 acts more stable.
Further, on the basis of upper one embodiment, valve body 61 is equipped with the mounting blocks of one with its detachable connection
8, and back pressure hole 614 is set on the mounting blocks 8.
Using the above preferred scheme, by replacing different mounting blocks 8, to replace the back pressure hole in different size aperture
614, so that it is more able to satisfy the demand of different screw compressors.
In order to further optimize implementation result of the invention, in other embodiment, remaining feature technology phase
Together, the difference is that, intermediate channel is the annular groove 631 being set on spool 63.
Using the above preferred scheme, the intermediate channel technique that annular groove 631 is arranged is simpler, and the annular groove includes:
Opening portion 6311 and interconnecting part 6312 of the opening in "eight" shape.Splay opening, the circulation between cavity of being more convenient for.
And intermediate channel may be the through-hole being set on spool 63, the intermediate channel that through-hole is arranged is more direct.Meanwhile
Pore size of the aperture of the through-hole not less than the first suction hole 611 and gas vent 613.
In order to further optimize implementation result of the invention, in other embodiment, remaining feature technology phase
Together, the difference is that, exhaust passage 51 is set in parallel with backpressure passage 52.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
In order to further optimize implementation result of the invention, in other embodiment, remaining feature technology phase
Together, the difference is that, floating seal assembly 3 is set to back pressure cavity d.
Using the above preferred scheme, performance is more stable.
Further, on the basis of upper one embodiment, back pressure cavity d passes through intercommunicating pore 53 and centre on fixed scroll 5
Compression chamber c is communicated.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
Further, on the basis of upper one embodiment, exhaust passage 51 and backpressure passage 52 are set to fixed scroll 5
The same side, and intercommunicating pore 53 is set to the other side opposite with exhaust passage 51 and backpressure passage 52 on fixed scroll 5.
Using the above preferred scheme, structure is more attractive, and performance is more stable.
Further, on the basis of upper one embodiment, the pressure value in suction plenum a is Ps, and the pressure of back pressure cavity d
Power Pf is KPs, K > 1.
Using the above preferred scheme, the precision for the setting pressure for pushing spool 63 to act is greatly improved.
For the preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art, do not taking off
Under the premise of from the invention design, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (10)
1. a kind of anti-vacuum evacuation device of screw compressor, comprising: shell and be set to the intracorporal noise reduction lid of the shell, float
Seal assembly, orbiter, fixed scroll and driving assembly, the shell is interior to have enclosure space, which is isolated
It is divided into suction plenum and discharge plenum, the floating seal assembly is for close to the noise reduction lid and the fixed scroll
Envelope, forms intermediate compression chamber between the orbiter and the fixed scroll, the driving component drives the orbiter
Rotation, which is characterized in that further include:
Anti- vacuum pumping valve comprising:
Valve body is set on the fixed scroll；
Valve chamber is set in the valve body, is communicated, is passed through with the suction plenum by the first suction hole on the valve body
The exhaust passage on gas vent and the fixed scroll on the valve body is communicated with the discharge plenum, passes through the valve body
On back pressure hole and the backpressure passage on the fixed scroll communicated with back pressure cavity, the back pressure cavity and the intermediate compression chamber phase
It is logical；
Spool is set in the valve chamber, and the side of the spool is by elastic component and the valve body elastic connection, opposite
The other side is oppositely arranged with the valve body one side wall for being provided with the back pressure hole, and an intermediate channel is additionally provided on the spool；
When the intracavitary pressure value P s of the pressure of inspiration(Pi) is less than setting value, the spool makes under the action of the elastic component
The first suction hole, intermediate channel and the gas vent obtained on the valve body communicates, and the intracavitary refrigerant of the pressure at expulsion passes through institute
It states the first suction hole, intermediate channel and gas vent and flows into the suction plenum；
When the intracavitary pressure value P s of the pressure of inspiration(Pi) is greater than the set value, effect of the spool in the Pressure in Back-pressure Cavity
Under so that the first suction hole on the valve body is not communicated with gas vent, the discharge plenum and the suction plenum every
From.
2. the anti-vacuum evacuation device of screw compressor according to claim 1, which is characterized in that be equipped on the valve body
Installation cavity, the elastic component are set in the installation cavity, and the second suction hole, second air-breathing are equipped on the valve body
Hole communicates the installation cavity with the suction plenum.
3. the anti-vacuum evacuation device of screw compressor according to claim 2, which is characterized in that second suction hole
Pore size is not more than the pore size of the back pressure hole.
4. the anti-vacuum evacuation device of screw compressor according to claim 3, which is characterized in that the valve body is equipped with one
With the mounting blocks of its detachable connection, and the back pressure hole is set on the mounting blocks.
5. the anti-vacuum evacuation device of screw compressor according to claim 1-4, which is characterized in that the centre
Channel is the annular groove or through-hole being set on the spool.
6. the anti-vacuum evacuation device of screw compressor according to claim 1-4, which is characterized in that the exhaust
Channel is set in parallel with the backpressure passage.
7. the anti-vacuum evacuation device of screw compressor according to claim 1-4, which is characterized in that the floating
Seal assembly is set to the back pressure cavity.
8. the anti-vacuum evacuation device of screw compressor according to claim 7, which is characterized in that the back pressure cavity passes through institute
The intercommunicating pore stated on fixed scroll is communicated with the intermediate compression chamber.
9. the anti-vacuum evacuation device of screw compressor according to claim 8, which is characterized in that the exhaust passage and institute
The same side that backpressure passage is set to the fixed scroll is stated, and the intercommunicating pore is set on the fixed scroll and the row
Gas channel and the opposite other side of the backpressure passage.
10. the anti-vacuum evacuation device of screw compressor according to claim 9, which is characterized in that the suction plenum
Interior pressure value is Ps, and the pressure Pf of the back pressure cavity is KPs, K > 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315603.5A CN109162919B (en) | 2018-11-06 | 2018-11-06 | Anti-vacuumizing device of scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811315603.5A CN109162919B (en) | 2018-11-06 | 2018-11-06 | Anti-vacuumizing device of scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109162919A true CN109162919A (en) | 2019-01-08 |
| CN109162919B CN109162919B (en) | 2023-09-26 |
Family
ID=64876824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811315603.5A Active CN109162919B (en) | 2018-11-06 | 2018-11-06 | Anti-vacuumizing device of scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109162919B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253457A (en) * | 2020-09-16 | 2021-01-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner |
| CN113048051A (en) * | 2019-12-27 | 2021-06-29 | 丹佛斯（天津）有限公司 | Scroll compressor having a plurality of scroll members |
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| CN102330677A (en) * | 2010-07-12 | 2012-01-25 | Lg电子株式会社 | Scroll compressor |
| CN209053784U (en) * | 2018-11-06 | 2019-07-02 | 苏州英华特涡旋技术有限公司 | A kind of anti-vacuum evacuation device of screw compressor |
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| KR20010066790A (en) * | 1999-12-10 | 2001-07-11 | 구자홍 | Apparatus for preventing vacuum compression of scroll compressor |
| CN1455113A (en) * | 2002-04-29 | 2003-11-12 | Lg电子株式会社 | Vacuum-protective device for vortex compressor |
| CN1487197A (en) * | 2002-05-01 | 2004-04-07 | Lg电子株式会社 | Vacuumproof device for vortex type compressor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048051A (en) * | 2019-12-27 | 2021-06-29 | 丹佛斯（天津）有限公司 | Scroll compressor having a plurality of scroll members |
| CN113048051B (en) * | 2019-12-27 | 2023-02-28 | 丹佛斯（天津）有限公司 | Scroll compressor having a discharge port for discharging refrigerant from a discharge chamber |
| CN112253457A (en) * | 2020-09-16 | 2021-01-22 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109162919B (en) | 2023-09-26 |
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