CN107514363A - Screw compressor, capacity adjusting device and capacity adjusting method thereof, and air conditioning system - Google Patents
Screw compressor, capacity adjusting device and capacity adjusting method thereof, and air conditioning system Download PDFInfo
- Publication number
- CN107514363A CN107514363A CN201710750740.0A CN201710750740A CN107514363A CN 107514363 A CN107514363 A CN 107514363A CN 201710750740 A CN201710750740 A CN 201710750740A CN 107514363 A CN107514363 A CN 107514363A
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- China
- Prior art keywords
- helical
- lobe compressor
- capacity
- bypass line
- control valve
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000004378 air conditioning Methods 0.000 title claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 41
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000008520 organization Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
- F04C28/26—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
-
- 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
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to the technical field of compressors, in particular to a capacity adjusting device of a screw compressor, which comprises: one end of each bypass pipeline is communicated with a rotor cavity of the screw compressor, and the other end of each bypass pipeline is communicated with a gas suction cavity of the screw compressor; the plurality of bypass pipelines are arranged in parallel along the axial direction of a rotor cavity of the screw compressor; and the control valve is arranged on the bypass pipeline and used for respectively controlling the on-off of each bypass pipeline. According to the capacity adjusting device, the rotor cavity of the screw compressor is respectively communicated with the air suction cavity through the plurality of bypass pipelines, and the on-off of each bypass pipeline is respectively controlled by the control valve, so that the effective working length of the rotor of the screw compressor is changed, and the purpose of adjusting the capacity of the screw compressor is achieved. Meanwhile, the adjusting device is simple in structure, the technological requirement of the whole machine assembly is reduced, no moving part is arranged, and the reliability of the screw compressor is improved.
Description
Technical field
The present invention relates to Compressor Technology field, more particularly to a kind of helical-lobe compressor and its capacity regulating device and appearance
Amount adjustment method, air-conditioning system.
Background technology
At present in exhaust end base of oil injection threaded bolt refrigerating compressor and technical screw compressor, widely used sliding valve structure carries out capacity
Regulation.This adjusting method is that one regulating slide valve of installation, the regulating slide valve are located at body high pressure on helical-lobe compressor body
The point of intersection of the inner circle of side two, turn into a part for compressor block, by moving back and forth on the direction parallel with rotor axis
Pondage.
Capacity regulating sliding valve structure has lot of advantages, but has the following disadvantages：1) required precision of guiding valve process and assemble compared with
Height, improve manufacturing cost；2) guiding valve easily causes rotor scratch in moving process, and reduce helical-lobe compressor can
By property.
The content of the invention
Based on this, it is necessary to it is high for the sliding valve structure assembly precision of traditional pondage, and sliding valve movement produces abrasion,
A kind of and the problems such as being easily caused rotor scratch, there is provided spiral shell that can be improved helical-lobe compressor reliability and reduce assembly technology requirement
The capacity regulating device of bar compressor, while additionally provide a kind of helical-lobe compressor and its capacity with the capacity regulating device
Adjusting method, and air-conditioning system.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of capacity regulating device of helical-lobe compressor, including：Multiple bypass lines, one end of each bypass line with
The rotor chamber connection of helical-lobe compressor, the other end connect with the suction muffler of helical-lobe compressor；Multiple bypass lines are along screw rod pressure
The axial direction of the rotor chamber of contracting machine is set up in parallel；
Control valve, it is arranged on bypass line, for controlling the break-make of each bypass line respectively.
In one of the embodiments, along helical-lobe compressor rotor chamber axial direction, in the rotor chamber of helical-lobe compressor
Compartment of terrain offers multiple through holes through compressor block successively on outer wall, and through hole and screw compression are respectively communicated with by pipeline
The suction muffler of machine, to form multiple bypass lines respectively.
In one of the embodiments, the capacity regulating device of helical-lobe compressor also includes circulation main road, multiple bypass pipes
Road is connected by the main road that circulates with the suction muffler of helical-lobe compressor.
In one of the embodiments, control valve is stop valve.
In one of the embodiments, control valve is magnetic valve.
In one of the embodiments, the capacity regulating device of helical-lobe compressor also includes controlling organization, magnetic valve and control
Mechanism electrical connection processed；
Controlling organization is used for the keying for controlling magnetic valve, to control the break-make of each bypass line respectively.
A kind of helical-lobe compressor, include the capacity regulating device of above-mentioned helical-lobe compressor.
A kind of air-conditioning system, including above-mentioned helical-lobe compressor.
A kind of capacity regulation method of helical-lobe compressor, for adjusting the working capacity of above-mentioned helical-lobe compressor；
It the described method comprises the following steps：
Capacity regulating as needed corresponds to the control valve of bypass line, so that the effective length hair of rotor of helical lobe compressor
Raw respective change.
In one of the embodiments, the control valve of bypass line is corresponded in capacity regulating as needed, so that screw rod
It is further comprising the steps of before the step of respective change occurs for the effective length of compressor drum：
Before helical-lobe compressor startup, each bypass line is controlled to be both turned on respectively by each control valve, to realize screw rod
Compressor Low loading start up.
The capacity regulating device of above-mentioned helical-lobe compressor, by the rotor chamber of helical-lobe compressor by multiple bypass lines with inhaling
Air cavity is respectively communicated with, and controls the break-make of each bypass line respectively using control valve, to change having for rotor of helical lobe compressor
Active length is imitated, so as to reach the purpose of adjusting screw rod compressor capacity.Meanwhile this adjusting means is simple in construction, reduce whole
The technological requirement of machine assembling, and there is no moving component, improve the reliability of helical-lobe compressor.
Because the capacity regulating device of helical-lobe compressor has above-mentioned technique effect, the capacity comprising the helical-lobe compressor is adjusted
The helical-lobe compressor and air-conditioning system of regulating device also have corresponding technique effect.
Brief description of the drawings
Fig. 1 is the principle schematic of the capacity regulating device of helical-lobe compressor provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and combine attached
Figure, to the helical-lobe compressor and its capacity regulating device and capacity regulation method of the present invention, air-conditioning system carries out further detailed
Explanation.It should be appreciated that specific embodiment described herein is not intended to limit the present invention only to explain the present invention.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
In the absence of intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
The capacity regulating device of the helical-lobe compressor of one embodiment of the invention, including multiple bypass lines, each bypass pipe
The one end on road connects with the rotor chamber of helical-lobe compressor, and the other end connects with the suction muffler of helical-lobe compressor；Multiple bypass
Axial direction of the pipeline along the rotor chamber of helical-lobe compressor is set up in parallel；
Control valve, it is arranged on bypass line, for controlling the break-make of each bypass line respectively.
Wherein, control valve can be off valve or magnetic valve etc., to realize the break-make of corresponding bypass line.It is of the invention real
Apply example replaces traditional sliding valve structure to realize the capacity regulating of helical-lobe compressor using multiple bypass lines, simple in construction, drop
The low technological requirement of final assembly, and there is no moving component, improve the reliability of helical-lobe compressor.
As a kind of enforceable mode, along the axial direction of the rotor chamber of helical-lobe compressor, in the rotor chamber of helical-lobe compressor
Outer wall on successively compartment of terrain offer multiple through holes through compressor block, through hole and screw rod pressure are respectively communicated with by pipeline
The suction muffler of contracting machine, to form multiple bypass lines respectively.
Wherein, through hole open up position be according to helical-lobe compressor rotor chamber length, in the capacity regulating position of needs
Carry out perforate is put, is then connected respectively by pipeline with suction muffler.Shape is set with the normal work of the rotor chamber of helical-lobe compressor
On the basis of state, each through hole is opened in the side or top of rotor chamber, to facilitate arrangement pipeline and control valve.The screw rod of the present embodiment
The capacity regulating device of compressor, it is only necessary to multiple through holes through body are set in rotor chamber, realized one in rotor chamber
Portion gas is bypassed to suction muffler, and processing is simple, precision is low, therefore manufacturing cost is low.
Each bypass line can be connected or converged to respectively a supervisor with suction muffler by respective pipeline
Road is communicated to suction muffler.As a kind of enforceable mode, the capacity regulating device of helical-lobe compressor also includes circulation main road, more
Individual bypass line is connected by the main road that circulates with the suction muffler of helical-lobe compressor.So, the arrangement of pipeline can be easy to, make structure
It is compacter.
As a kind of enforceable mode, control valve is magnetic valve.
Further, the capacity regulating device of helical-lobe compressor also includes controlling organization, and magnetic valve is electrically connected with controlling organization
Connect；Controlling organization is used for the keying for controlling magnetic valve, to control the break-make of each bypass line respectively.In this manner it is achieved that capacity
The Automated condtrol of adjusting means.
Referring to Fig. 1, by taking conventional 25%, 50% and 75% three-stage capacity regulating as an example, the screw rod pressure of the embodiment of the present invention
The principle of the capacity regulating device of contracting machine is：
According to the length of the rotor chamber 100 of helical-lobe compressor, in the capacity regulating position of needs, i.e., in rotor cavity length
25%th, 50% and 75% opening position, along axially being opened up respectively through compressor block on the outer wall of rotor chamber for rotor chamber
Through hole, each through hole is all connected with a pipeline, to form bypass line L1, L2, L3；
Design one circulation main road connect with the suction muffler of compressor, correspondence three through holes three bypass lines with stream
Logical main road connection.Control valve S1, S2, a S3 are arranged on every bypass line, with bypass line L1 corresponding to control,
L2, L3 break-make.
When needing to run compressor with 75% capacity, control valve S3, closing control valve S1, S2 are opened, now compressor
The effective length of rotor is only the 75% of physical length；
When needing to run compressor with 50% capacity, control valve S2, S3, closing control valve S1, now compressor are opened
The effective length of rotor is only the 50% of physical length；
When needing to run compressor with 25% capacity, control valve S1, S2, S3 are opened, now compressor drum is effective
Length is only the 25% of physical length.
One embodiment of the invention additionally provides a kind of helical-lobe compressor, including the screw compression described in any of the above-described embodiment
The capacity regulating device of machine.
With traditional compressor compared with sliding valve structure is realized by the way of capacity regulating, the compressor of this implementation only need to be
Multiple through holes run through are opened up on body, is formed and bypasses the portion gas of rotor chamber to multiple bypass lines of suction muffler, and
The break-make of each bypass line is controlled as needed, you can the capacity regulating of compressor is realized, therefore, processing is simple, precision is low,
So that manufacturing cost is low, and there is no moving component so that the reliability of compressor greatly improves.
One embodiment of the invention additionally provides a kind of capacity for being used to adjust the working capacity of above-mentioned helical-lobe compressor and adjusted
Section method, comprises the following steps：
Capacity regulating as needed corresponds to the control valve of bypass line, so that the effective length hair of rotor of helical lobe compressor
Raw respective change.In this manner it is achieved that the capacity regulating in helical-lobe compressor running.
Further, the control valve of bypass line is corresponded in capacity regulating as needed, so that rotor of helical lobe compressor
Effective length occur respective change the step of before, it is further comprising the steps of：
Before helical-lobe compressor startup, each bypass line is controlled to be both turned on respectively by each control valve, to realize screw rod
Compressor Low loading start up.For example, described above by taking conventional 25%, 50% and 75% three-stage capacity regulating as an example, in screw rod
Before compressor start, control valve S1, S2, S3 are opened, it is 25% Low loading start up that can now realize helical-lobe compressor.
One embodiment of the invention additionally provides a kind of air-conditioning system, including above-mentioned helical-lobe compressor.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. capacity regulating device of helical-lobe compressor, it is characterised in that including：Multiple bypass lines, one end of each bypass line connect with the rotor chamber of helical-lobe compressor, the other end with The suction muffler connection of helical-lobe compressor；Axial direction of the multiple bypass line along the rotor chamber of helical-lobe compressor is set up in parallel；Control valve, it is arranged on the bypass line, for controlling the break-make of each bypass line respectively.
- 2. the capacity regulating device of helical-lobe compressor according to claim 1, it is characterised in that along turning for helical-lobe compressor The axial direction of sub- chamber, compartment of terrain offers multiple leading to through compressor block successively on the outer wall of the rotor chamber of helical-lobe compressor Hole, the suction muffler of the through hole and the helical-lobe compressor is respectively communicated with by pipeline, to form the multiple bypass pipe respectively Road.
- 3. the capacity regulating device of helical-lobe compressor according to claim 1, it is characterised in that also include circulation main road, Multiple bypass lines are connected by the circulation main road with the suction muffler of helical-lobe compressor.
- 4. the capacity regulating device of the helical-lobe compressor according to claim any one of 1-3, it is characterised in that the control Valve is stop valve.
- 5. the capacity regulating device of the helical-lobe compressor according to claim any one of 1-3, it is characterised in that the control Valve is magnetic valve.
- 6. the capacity regulating device of helical-lobe compressor according to claim 5, it is characterised in that also including controlling organization, The magnetic valve electrically connects with the controlling organization；The controlling organization is used for the keying for controlling the magnetic valve, to control the break-make of each bypass line respectively.
- 7. a kind of helical-lobe compressor, it is characterised in that include the capacity of the helical-lobe compressor as described in claim any one of 1-6 Adjusting means.
- 8. a kind of air-conditioning system, it is characterised in that including helical-lobe compressor as claimed in claim 7.
- 9. a kind of capacity regulation method of helical-lobe compressor, it is characterised in that methods described is used to adjust as claimed in claim 7 Helical-lobe compressor working capacity；It the described method comprises the following steps：Capacity regulating as needed corresponds to the control valve of bypass line, so that phase occurs for the effective length of rotor of helical lobe compressor It should change.
- 10. the capacity regulation method of helical-lobe compressor according to claim 9, it is characterised in that in appearance as needed The control valve of the corresponding bypass line of amount regulation so that the step of respective change occurs for the effective length of rotor of helical lobe compressor it Before, it is further comprising the steps of：Before helical-lobe compressor startup, each bypass line is controlled to be both turned on respectively by each control valve, to realize screw compression Machine Low loading start up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750740.0A CN107514363A (en) | 2017-08-28 | 2017-08-28 | Screw compressor, capacity adjusting device and capacity adjusting method thereof, and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710750740.0A CN107514363A (en) | 2017-08-28 | 2017-08-28 | Screw compressor, capacity adjusting device and capacity adjusting method thereof, and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107514363A true CN107514363A (en) | 2017-12-26 |
Family
ID=60724357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710750740.0A Pending CN107514363A (en) | 2017-08-28 | 2017-08-28 | Screw compressor, capacity adjusting device and capacity adjusting method thereof, and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107514363A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486278A (en) * | 2019-09-11 | 2019-11-22 | 珠海格力电器股份有限公司 | Double-stage compressor and air-conditioner set |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498849A (en) * | 1980-06-02 | 1985-02-12 | Sullair Technology Ab | Valve arrangement for capacity control of screw compressors |
| US6055967A (en) * | 1997-05-16 | 2000-05-02 | Ishikawajma-Harima Heavy Industries Co., Ltd. | Screw supercharger for vehicle |
| CN203500010U (en) * | 2013-09-16 | 2014-03-26 | 宁波鲍斯能源装备股份有限公司 | Start volume control device of refrigeration screw compressor |
| CN207145240U (en) * | 2017-08-28 | 2018-03-27 | 珠海格力电器股份有限公司 | Screw compressor's capacity adjusting device, screw compressor and air conditioning system |
-
2017
- 2017-08-28 CN CN201710750740.0A patent/CN107514363A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4498849A (en) * | 1980-06-02 | 1985-02-12 | Sullair Technology Ab | Valve arrangement for capacity control of screw compressors |
| US6055967A (en) * | 1997-05-16 | 2000-05-02 | Ishikawajma-Harima Heavy Industries Co., Ltd. | Screw supercharger for vehicle |
| CN203500010U (en) * | 2013-09-16 | 2014-03-26 | 宁波鲍斯能源装备股份有限公司 | Start volume control device of refrigeration screw compressor |
| CN207145240U (en) * | 2017-08-28 | 2018-03-27 | 珠海格力电器股份有限公司 | Screw compressor's capacity adjusting device, screw compressor and air conditioning system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486278A (en) * | 2019-09-11 | 2019-11-22 | 珠海格力电器股份有限公司 | Double-stage compressor and air-conditioner set |
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