CN105840520B - Fuel control device, compressor, screw compressor and air-conditioning system - Google Patents
Fuel control device, compressor, screw compressor and air-conditioning system Download PDFInfo
- Publication number
- CN105840520B CN105840520B CN201610353162.2A CN201610353162A CN105840520B CN 105840520 B CN105840520 B CN 105840520B CN 201610353162 A CN201610353162 A CN 201610353162A CN 105840520 B CN105840520 B CN 105840520B
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- Prior art keywords
- compressor
- oil inlet
- oil
- inlet passage
- chamber
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- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000004378 air conditioning Methods 0.000 title claims abstract description 9
- 230000006835 compression Effects 0.000 claims abstract description 60
- 238000007906 compression Methods 0.000 claims abstract description 60
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 239000002826 coolant Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 110
- 239000007789 gas Substances 0.000 description 39
- 239000010687 lubricating oil Substances 0.000 description 24
- 238000005057 refrigeration Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 206010008469 Chest discomfort Diseases 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000010725 compressor oil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/021—Control systems for the circulation of the lubricant
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses the fuel control device of compressor, including cavity, piston, elastic component, airway tube and gas path switching device；Cavity is located in compression case body, and the piston that cavity is separated into first chamber and second chamber is provided with cavity, and piston is provided with closure part close to the side of the first chamber；First chamber is provided with oil inlet and oil-out, and oil inlet connects with fueller, and oil-out connects with compression chamber；The elastic component being set on pistons end is provided with first chamber；Airway tube one end connects through cavity and with second chamber, and the other end connects through compressor housing and with gas path switching device；Gas path switching device includes a gas outlet and two air inlets, gas outlet connect with airway tube, and two air inlets are corresponding to be connected with the air intake duct and blast pipe of compressor.The invention also discloses compressor, screw compressor, air-conditioning system.The present invention can meet the demand of the medium-high frequency operation of compressor, can also meet the demand of the low-frequency operation of compressor.
Description
Technical field
The present invention relates to compressor field, more particularly to fuel control device, have fuel control device compressor and
Screw compressor, air-conditioning system.
Background technology
Convertible frequency air-conditioner in the process of running, by changing compressor frequency of supply, so as to adjust compressor rotary speed so that pressure
Contracting machine may operate under different frequencies.Therefore, the convertible frequency air-conditioner because of compressor operating at very low frequencies, so as to
To reach energy-conservation purpose.
The frequency of compressor operating is different in convertible frequency air-conditioner, and the oil extraction efficiency of compressor is also different.Generally under medium-high frequency,
Compressor oil drainage rate is higher, and at low frequency, compressor oil drainage rate is relatively low, the too high heat exchange effect that can reduce air-conditioning system of oil extraction rate
Fruit, therefore the oil mass into compression chamber is controlled as far as possible.
In existing technology, typically by opening up the oil supply gallery of connection compression chamber, compression chamber is introduced after oil is throttled
In, meet lubrication and sealing needs.Because the oil mass for entering compression chamber is relevant with rotating speed, therefore to ensure oil extraction rate under medium-high frequency
Will not be too high, the gap of oil supply gallery can do it is smaller, but consequently, it is possible to the compressor operating in low frequency, then often
The problem of compressor oil-supplying deficiency be present, cause in compression chamber oil film deficiency, internal leakage be present, reduce the efficiency of compressor with
And reliability.
The content of the invention
It is a primary object of the present invention to provide fuel control device, compressor, screw compressor and air-conditioning system, it is intended to
Realize that compressor operating process can adjust corresponding fuel delivery as needed, so that the supply of lubricating oil can meet to compress
The demand of the medium-high frequency operation of machine, it can also meet the demand of the low-frequency operation of compressor.
To achieve the above object, the invention provides a kind of fuel control device of compressor, including：Cavity, piston, bullet
Property part, airway tube and gas path switching device；
The cavity is located in compression case body；
The piston is located in the cavity, and the cavity is separated into first chamber and second chamber, and the piston
Closure part is provided with close to the side of the first chamber；The first chamber is provided with oil inlet and oil-out, the oil inlet
Connected with the fueller of compressor, the oil-out connects with the compression chamber of the compressor, and the oil-out is by described
The closure part closure of piston is exposed；The elastic component being set on the closure part of the piston is provided with the first chamber；
Described airway tube one end connects through cavity and with the second chamber, and the other end passes through the compressor housing simultaneously
Connected with the gas path switching device；
The gas path switching device includes a gas outlet and two air inlets, and the gas outlet and the airway tube are another
End connection, described two air inlets are corresponding to be connected with the air intake duct and blast pipe of the compressor.
Preferably, it is external to set the compression case for the fueller, and the oil inlet is by through the compression case
The oil inlet passage of body connects with the fueller.
Preferably, in compression case body, the oil inlet passes through located at the compressor housing fueller
Interior oil inlet passage connects with the oil storage portion.
Preferably, it is provided with throttle part in the oil inlet passage.
Preferably, the gas path switching device is triple valve, or the electromagnetism including being arranged at described two air inlets
Switch.
Preferably, the fuel control device also includes controller：For obtaining the running frequency of compressor, described in judgement
Compressor operating frequency is located at low-frequency range and is still located at medium-high frequency scope；When the running frequency of compressor is located at low-frequency range
When, gas path switching device is controlled, airway tube is connected with the air intake duct of compressor；When the running frequency of compressor is located at medium-high frequency
During scope, control airway tube connects with the blast pipe of compressor.
In addition, to achieve the above object, the embodiment of the present invention additionally provides a kind of compressor, including compressor housing, sets
The fuel control device in compression case body is put, the fuel control device is the fuel control device of said structure.
In addition, to achieve the above object, the embodiment of the present invention additionally provides a kind of screw compressor, including casing, upper lid
The compressor housing to be formed is enclosed with lower cover, fixed scroll, orbiter, mainframe are provided with the compression case body；It is described
Orbiter and fixed scroll engage to form compression chamber；The mainframe is located at the side of the orbiter；Characterized in that,
Above-mentioned fuel control device is additionally provided with the compression case body, and the cavity of the fuel control device is arranged on the quiet whirlpool
On capstan.
Preferably, the mainframe is provided with oil storage portion, and the fixed scroll is provided with the radial direction along the fixed scroll
The first oil inlet passage, the second axially extending oil inlet passage along the fixed scroll of extension, the mainframe are provided with edge
The 3rd axially extending oil inlet passage, the 4th oil inlet passage radially extended along the mainframe of the mainframe；It is described
First oil inlet passage one end connects with the oil inlet of the fuel control device, and the other end connects with described second oil inlet passage one end
It is logical；The second oil inlet passage other end connects with described 3rd oil inlet passage one end, the 3rd oil inlet passage other end with it is described
4th oil inlet passage one end connects, and the 4th oil inlet passage other end connects with the oil storage portion.
Preferably, the first oil inlet passage other end also extends through the perisporium of the fixed scroll, forms the first breach；Institute
The one end for stating the 4th oil inlet passage also extends through the perisporium of the mainframe, forms the second breach；First breach and second lacks
The seal is respectively provided with mouthful.
Preferably, the fueller connected in the fuel control device with the oil inlet of the fuel control device is located at
Compression case is external, and the oil inlet is connected by the oil inlet passage through the compressor housing with the fueller.
Preferably, it is provided with throttle part in the oil inlet passage.
Preferably, the fueller connected in the fuel control device with the oil inlet of the fuel control device is position
Oil sump at the lower cover, the oil inlet along the axially extending capillary of compressor housing with the oil sump by connecting.
In addition, to achieve the above object, the embodiment of the present invention additionally provides a kind of air-conditioning system, including compressor, condensation
Device, evaporator, and the coolant loop of connection compressor, condenser and evaporator；Institute's compressor is the pressure of said structure
Contracting machine.
The embodiment of the present invention in compressor by setting fuel control device, the gas circuit switching dress of the fuel control device
Put so that airway tube connects with air intake duct as needed, or is connected with blast pipe, so as to the oil-out that will be connected with compression chamber
Block or expose, realize the regulation on demand into the oil mass in compression chamber so that the supply of lubricating oil can meet compressor
Medium-high frequency operation demand, can also meet the demand of the low-frequency operation of compressor.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the cross section structure schematic diagram of the compressor first embodiment of the present invention；
Fig. 2 is the close-up schematic view in A portions in Fig. 1；
Fig. 3 is the partial schematic diagram of the cross section structure of the compressor second embodiment of the present invention；
Fig. 4 is the fuel feeding schematic diagram of compressor operating fuel control device in medium-high frequency of the present invention；
Fig. 5 is the fuel feeding schematic diagram of compressor operating fuel control device in low frequency of the present invention；
Fig. 6 is the cross section structure schematic diagram of the compressor 3rd embodiment of the present invention；
Fig. 7 is the cross section structure schematic diagram of the compressor fourth embodiment of the present invention.
Drawing reference numeral explanation：
The realization, functional characteristics and advantage of the object of the invention will be described further referring to accompanying drawing in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only the part of the embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining the relative position relation under a certain particular pose between each part, motion conditions etc., if the particular pose occurs
During change, then directionality instruction also correspondingly changes therewith.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or imply the quantity of the technical characteristic indicated by indicating.Thus, " first ", " are defined
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when can not realize should people think that the combination of this technical scheme is not present, also not in the protection of application claims
Within the scope of.
The present invention mainly proposes a kind of fuel control device, applied to compressor, compression that can optionally to compressor
Chamber fuel feeding, so as to improve the compression efficiency under compressor medium-high frequency, and reliability during raising compressor low-frequency operation.
Compressor can be applied in refrigeration system, such as air-conditioning, refrigerator, freezer etc..It is low from air intake duct suction low temperature
The refrigerant gas of pressure, after being compressed by motor operating to it, the refrigerant gas of HTHP is discharged to blast pipe, from
And provide power for kind of refrigeration cycle.During compressor operating, can't do without the lubrication of lubricating oil, thus in compressor there will be
A certain amount of lubricating oil, to be lubricated during compressor operating to each component of compressor.
Above-mentioned compressor may include reciprocating compressor, rotary compressor, and rotary compressor may include to be vortexed
Formula, centrifugal, screw.Mainly its fuel control device is described by taking scroll compressor as an example for the embodiment of the present invention.
As shown in figure 1, the screw compressor includes the closed collecting formed by casing 101, upper lid 102 and lower cover 103
Space, i.e. compressor housing.Fixed scroll 11, orbiter 12, mainframe 13, bent axle 14, motor are provided with the receiving space
15th, oil sump 16, slave frame 17.Wherein,
Casing 101 is cylinder block, and the cylinder body both ends are opening-like.One opening adapter of upper lid 102 and cylinder body
Close, and setting of being arched upward in the middle part of upper lid 102.Lower cover 103 is adapted to engaging with another opening of cylinder body, and the middle part of lower cover 103 is arched upward and set
Put.The lower cover 103 to arch upward encloses the oil sump 16 to form compression motor spindle with cylinder body, for installing lubricating oil.
Fixed scroll 11 includes quiet disk body 111, static vortex tooth 112.Orbiter 12 includes Moving plate body 121, dynamic vortex tooth
122 and wheel hub 123.The static vortex tooth 112 of fixed scroll 11 and the dynamic vortex tooth 122 of orbiter 12 are intermeshed, and form one
The crescent compression chamber 20 of series.Quiet disk body 111 is in round pie, and between the periphery wall of quiet disk body 111 and the internal perisporium of cylinder body
Form a gap.The fixed scroll 11 and orbiter 12 are located in cylinder body and close to the position of upper lid 102.Fixed scroll 11
Quiet disk body 111 set than orbiter 12 closer to upper lid 102, and quiet disk body 11 and upper lid 102 enclose to form discharge chamber 30.
Steam vent 113 is additionally provided with fixed scroll 11, and fixed scroll 11 is connected with an air intake duct 18.The air intake duct 18 is along fixed scroll
11 axial direction extension, and pass compressor housing.Certainly, the air intake duct 18 can also prolong along the radial direction of fixed scroll 11
Stretch, and pass compressor housing, as shown in Figure 7.Low pressure refrigerant gas is sucked into fixed scroll 11 and dynamic whirlpool by air intake duct 18
In the compression chamber 20 that capstan 12 is formed, after gas compression, then by fixed scroll 11 steam vent 113 to discharge chamber 30.
Mainframe 13 is arranged in cylinder body, and positioned at the lower section of orbiter 12.The mainframe 13 is overall to be in the form of a column, and main
A gap is formed between the periphery wall of frame 13 and the internal perisporium of cylinder body.Oil storage portion 131, oil storage portion 131 are provided with the mainframe 13
Bottom be provided with spill port 132.In addition, the center of mainframe 13 is additionally provided with the through hole passed through for bent axle 14.
Motor 15 is arranged in cylinder body, and positioned at the lower section of mainframe 13.The motor 15 may include stator 151 and rotor
152.Slave frame 17 is located at the lower section of motor 15.Space between motor 15 and mainframe 13, and motor 15 and slave frame 17 it
Between space formed high pressure chest 40.The high pressure chest 40 connects a blast pipe 19, and the blast pipe 19 extends to compression through casing 102
Outside machine, for gases at high pressure caused by compressor to be discharged, the kind of refrigeration cycle of heating/refrigerating system.
The one end of bent axle 14 sequentially passes through rotor 152, mainframe 13, and is connected with the wheel hub 123 of orbiter 12.Bent axle 14
The other end pass through slave frame 17, and the Oil Guide part with stretching into oil sump 16 is connected.The bent axle 14 is provided with center oilhole 141.
Motor 15 rotates, and is rotated with dynamic crankshaft 14.Because bent axle is connected with orbiter 12, therefore orbiter 12 is same with bent axle 14
Step rotates.While bent axle 14 rotates, by Oil Guide part by the lubricating oil in oil sump 16 via center oilhole be delivered up to
Orbiter 12, and enter in compression chamber 20.After the lubrication to each operating assembly, oil storage portion 131 will be flow to, and by oil storage
The spill port 132 in portion 131 returns to oil sump 16.
In the process of running, refrigerant is drawn into by fixed scroll 11 and dynamic vortex above-mentioned screw compressor from air intake duct 18
In multiple crescent compression chambers 20 that disk 12 is formed, along with the eccentric operating of orbiter, crescent compression chamber by periphery not
Disconnected moves to center.Now, the refrigerant of intracavitary is also pushed to center, is constantly raised as chamber volume constantly reduces pressure, directly
It is discharged to after turning into gases at high pressure to refrigerant in discharge chamber 30 by the steam vent 113 of fixed scroll 11, and along fixed scroll 11, mainframe
Gap between 13 and cylinder body, cooling motor 15 in the high pressure chest 40 at motor 15 is discharged to downwards, finally by blast pipe 19
Discharge.Meanwhile lubricating oil is in the presence of the Oil Guide part of the bottom of bent axle 14, from oil sump 16 along the center oilhole of bent axle 14
141, to top fuel feeding, enter in the oil storage portion 131 of mainframe 13, and flowed out from spill port 132 and return to bottom after bearing is lubricated
Portion's oil sump 16, parts of lubricating oil can also enter lubrication orbiter 12 and fixed scroll 11 in compression chamber 20.
In order that the supply for obtaining lubricating oil can meet the medium-high frequency operation of compressor, it can also meet the low frequency fortune of compressor
OK, the invention provides a kind of fuel control device, it is arranged in compressor cylinder body, to be adjusted according to the running frequency of compressor
The supply of lubricating oil.By taking screw compressor as an example, with reference to reference picture 2 and Fig. 3, the fuel control device includes：Cavity 51, piston
52nd, elastic component 53, airway tube 54, gas path switching device 55.
Above-mentioned cavity 51 is located on the quiet disk body 111 of fixed scroll 11.In processing, by quiet disk body 111 along quiet disk body 11
Axial direction inwardly open up to form cavity 51, and the opening of the cavity 51 is sealed by cover plate 501, to form confined air
Between.Piston 52 is located in cavity 51, and piston 52 can slide along the axial direction of cavity 51 in cavity 51.In order to ensure to live
52 being slidingly sealed property is filled in, sealing ring 521 is arranged with the periphery wall of the piston.Axial direction of the piston 52 along cavity 51 will
Cavity 51 is separated into first chamber 51a and second chamber 51b.First chamber 51a is provided with oil inlet 511 and oil-out 512, enters
Hydraulic fluid port 511 connects with fueller, and oil-out 512 connects with the compression chamber 20 of the compressor.Piston 52 is close to first chamber
51a side is provided with closure part, is provided with elastic component 53 in first chamber 51a, and elastic component is spring, is linked in the closure part
On.When basal sliding of the piston 52 to cavity 51 and oil-out 512 is blocked, then the lubricating oil that fueller provides will not enter
Compressor chamber 20；When piston 52 exposes to the top slide of cavity 51 and by oil-out 512, then fueller provides lubricating oil,
To be provided from first chamber 51a oil-out 512 to compression chamber 20.It is understood that above-mentioned oil-out 512 can be more
Individual, the oil-out 512 is connected by oil discharge passage with compression chamber 20.Moreover, in order to prevent ganging up for adjacent compressor, this is fuel-displaced
The aperture of passage is less than the wall thickness of static vortex tooth.
The one end of airway tube 54 through cavity 51 and connect with second chamber 51b, the other end pass through compressor top cover 102 and with
Gas path switching device 55 connects.Gas path switching device 55 includes a gas outlet and two air inlets, gas outlet and airway tube 54
The other end is connected, and two air inlets are corresponding to be connected with the air intake duct 18 and blast pipe 19 of the compressor.
The present embodiment passes through gas path switching device 55 so that airway tube 54 is connected with air intake duct 18 or connected with blast pipe 19
It is logical, so as to change second chamber 51b air pressure.Specifically, when airway tube 54 connects with air intake duct 18, what air intake duct 18 sucked
Low pressure refrigerant gas enters second chamber 51b along airway tube 54 so that second chamber 51b air pressure reduces；When airway tube 54 with
When blast pipe 19 connects, the gases at high pressure that blast pipe 19 is discharged enter second chamber 51b along airway tube 54 so that second chamber
51b air pressure rise.And above-mentioned piston 52 is then according to first chamber 51a air pressure, second chamber 51b air pressure and elastic component
The collective effect of 53 elastic force, slided along the axial direction of cavity 51 in cavity 51.When second chamber 51b air pressure is more than the
One chamber 51a air pressure and the elastic force sum of elastic component, then piston 52 moved to the bottom of cavity 51, and can be by the envelope of oil-out 512
It is stifled；When the elastic force sum of air pressure of the second chamber 51b air pressure less than first chamber 51a and elastic component, then piston 52 is to cavity
51 top movements, and oil-out 512 can be exposed.
Further, above-mentioned gas path switching device 55 can be triple valve, and the triple valve includes a gas outlet, two air inlets
Mouthful, the switching of the inside communication channel by controlling gas outlet and air inlet.In another embodiment, the gas path switching device 55
The electromagnetic switch at two air inlets of gas path switching device 55 can be included, by the ON/OFF for controlling the electromagnetic switch
Carry out the switching of communicating passage.
Further, above-mentioned fueller can be external positioned at compression case, such as gas-liquid separator etc..Oil inlet 511
Connected by the oil inlet passage through compressor housing with the fueller.Due to the compression chamber position connected with oil inlet 511
In the outward flange position of quiet disk body 111, i.e. air pressure in the compression chamber is relatively low, therefore in order that must enter the lubricating oil of compression chamber
For low pressure oil, throttle part will be set in the oil inlet passage, to carry out reducing pressure by regulating flow to the lubricating oil entered in oil inlet passage
Afterwards, compression chamber is entered back into.If it is understood that the lubricating oil that the fueller provides is low pressure oil, the section can be omitted
The setting of stream unit.The throttle part can be choke valve, expansion valve, capillary etc..Or the fueller can also be above-mentioned
Oil sump 16 in screw compressor, i.e. oil inlet are directly connected by oil inlet passage with the bottom oil sump 16 of screw compressor.And
And in order that the lubricating oil that must enter compression chamber is low pressure oil, the oil inlet passage can be replaced by capillary 60, as shown in Figure 6.
In another embodiment, the fueller can be the oil storage portion 131 in above-mentioned screw compressor on mainframe 13.Oil-feed
Mouth 511 is connected by oil inlet passage with oil storage portion 131.Specifically, the oil inlet passage 56 includes the first oil inlet passage 561, second
Oil inlet passage 562, the 3rd oil inlet passage 563, the 4th oil inlet passage 564.Wherein, fixed scroll 11 is provided with along the quiet vortex
The first oil inlet passage 561 radially extended of disk 11, the second axially extending oil inlet passage 562 along the fixed scroll 11,
The mainframe 13 is provided with the 3rd axially extending oil inlet passage 563 along the mainframe 13, along the mainframe 13
The 4th oil inlet passage 564 radially extended；Described one end of first oil inlet passage 561 connects with the oil inlet 411, the other end with
The one end of second oil inlet passage 562 connection；The other end of second oil inlet passage 562 and the 3rd oil inlet passage 563 1
End connection, the other end of the 3rd oil inlet passage 563 connect with described one end of 4th oil inlet passage 564, and the 4th oil inlet passage 564 is another
End connects with the oil storage portion 131.Because the compression chamber 20 connected with oil inlet 511 is located at the outward flange position of quiet disk body 111,
Air pressure i.e. in the compression chamber 20 is relatively low, and the lubricating oil that oil storage portion 131 is provided is hydraulic oil, therefore in order that must enter pressure
The lubricating oil of contracting chamber 20 is low pressure oil, and throttle part 58 will be set in the oil inlet passage, with to entering in oil inlet passage 56
After lubricating oil carries out reducing pressure by regulating flow, compression chamber 20 is entered back into.It is understood that the throttle part 58 may be provided at oil inlet passage
Any one position in any one passage in 56, as long as reducing pressure by regulating flow can be played a part of.The throttle part 58 can
For choke valve, expansion valve, capillary etc..In addition, as shown in figure 3, it is additionally provided with the periphery wall of above-mentioned mainframe 13 along main frame
The axially arranged drainback passage 59 of frame, and the drainback passage 59 connects with the 4th oil inlet passage 564.When needs supply to compression chamber 20
When oily, under differential pressure action, lubricating oil can preferentially supply compression chamber 20, if in the presence of excessive oil, can be along drainback passage 59
Return to bottom oil sump 16.
Further, because the processing of passage needs, the other end of the first oil inlet passage 561 passes through the outer of fixed scroll 11
Perisporium, and form the first breach.One end of 4th oil inlet passage 564 passes through the periphery wall of mainframe 13, and forms the second breach.
And first breach and the second indentation, there are provided with seal 57.The height in discharge chamber 30 can be prevented by the seal 57
Calm the anger when internal perisporium of the body along cylinder body drains into high pressure chest 40 downwards and enter oil inlet passage.
In the present embodiment, by setting fuel control device, the gas circuit switching dress of the fuel control device in compressor
Put so that airway tube connects with air intake duct as needed, or is connected with blast pipe, so as to the oil-out that will be connected with compression chamber
Expose or block, realize the regulation on demand into the oil mass in compression chamber so that the supply of lubricating oil can meet compressor
Medium-high frequency operation demand, can also meet the demand of the low-frequency operation of compressor.
When above-mentioned screw compressor is applied to refrigeration system, above-mentioned gas path switching device 55 can be connected with a controller, with
Switched over according to the control of controller.The controller can be controlling switch, and is connected with the master control borad of refrigeration system, i.e. basis
The control of master control borad switches over.Or the controller is a functional unit, on the master control borad of refrigeration system.
Specifically, above-mentioned master control borad can be used for：Judge that the compressor operating frequency is located at during low-frequency range is still located at
High-frequency range；When the running frequency of compressor is located at low-frequency range, gas path switching device 55 is controlled, by airway tube 54 and compression
The air intake duct 18 of machine connects；When the running frequency of compressor is located at medium-high frequency scope, gas path switching device 55 is controlled, by air guide
Pipe 54 connects with the blast pipe 19 of compressor.
As shown in figure 4, when refrigeration system runs well in medium-high frequency, screw compressor operating frequency is higher, compression chamber
Fuel feeding is sufficient in 20, now controls gas path switching device 55 gas circuit 2 is connected with gas circuit 3, gases at high pressure are entered by airway tube 54
Enter second chamber 51b, when second chamber 51b air pressure gradually rises, and the air pressure more than first chamber 51a and elastic component 53
During elastic force sum, piston 52 moves down and blocks oil-out 512.At this point it is possible to excessive lubricating oil is avoided to enter pressure
In contracting chamber 20, it is suppressed that the rising of oil extraction rate.
As shown in figure 5, when refrigeration system needs output cold less, or during low-frequency start, screw compressor operating
Frequency is relatively low, and possible fuel feeding deficiency, now controls gas path switching device 55 gas circuit 1 is connected with gas circuit 3, low pressure in compression chamber 20
Gas enters second chamber 51b by airway tube 54, when second chamber 51b air pressure gradually reduces, and is less than first chamber 51a
Air pressure and elastic component 53 elastic force sum when, piston 52 moves up and exposes oil-out 512.Now, oil storage portion 131
Lubricating oil can enter first chamber 51a by oil inlet passage, and be entered through oil-out 512 in compression chamber 20, lubricate scroll plate
And enough oil films are provided, suppress the internal leakage of compression chamber 20, so as to improve compression efficiency and reliability.
Above-mentioned fuel control device can also be applied in other compressors, realize the supply on demand of lubricating oil, meet pressure
Operation demand under each running frequency of contracting machine.Every structure for employing above-mentioned fuel control device and the distressed structure that carries out or
The compressor of alternate constructions is within the scope of the present invention.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (14)
- A kind of 1. fuel control device of compressor, it is characterised in that including：Cavity, piston, elastic component, airway tube and gas Circuit switching device；The cavity is located in compression case body；The piston is located in the cavity, the cavity is separated into first chamber and second chamber, and the piston is close The side of the first chamber is provided with closure part；The first chamber is provided with oil inlet and oil-out, the oil inlet and pressure The fueller connection of contracting machine, the oil-out connects with the compression chamber of the compressor, and the oil-out is by the piston Closure part closure or expose；The elastic component being set on the closure part of the piston is provided with the first chamber；Described airway tube one end through cavity and connect with the second chamber, the other end pass through the compressor housing and with institute State gas path switching device connection；The gas path switching device includes a gas outlet and two air inlets, and the gas outlet connects with the airway tube other end Logical, described two air inlets are corresponding to be connected with the air intake duct and blast pipe of the compressor.
- 2. fuel control device as claimed in claim 1, it is characterised in that the fueller is located at the compressor housing Outside, the oil inlet is connected by the oil inlet passage through the compressor housing with the fueller.
- 3. fuel control device as claimed in claim 1, it is characterised in that the fueller is arranged on compressor housing Interior, the oil inlet is connected by the oil inlet passage in the compression case body with oil storage portion.
- 4. fuel control device as claimed in claim 2 or claim 3, it is characterised in that be provided with throttle part in the oil inlet passage.
- 5. fuel control device as claimed in claim 1, it is characterised in that the gas path switching device is triple valve, or Including the electromagnetic switch being arranged at described two air inlets.
- 6. fuel control device as claimed in claim 1, it is characterised in that the fuel control device also includes controller： For obtaining the running frequency of compressor, judge that the compressor operating frequency is located at low-frequency range and is still located at medium-high frequency model Enclose；When the running frequency of compressor is located at low-frequency range, gas path switching device is controlled, by airway tube and the air intake duct of compressor Connection；When the running frequency of compressor is located at medium-high frequency scope, control airway tube connects with the blast pipe of compressor.
- A kind of 7. compressor, it is characterised in that including compressor housing, the fuel control device being arranged in compression case body, The fuel control device is the fuel control device as described in claim any one of 1-6.
- 8. a kind of screw compressor, including casing, upper lid and lower cover enclose the compressor housing to be formed, in the compression case body Provided with fixed scroll, orbiter, mainframe；The orbiter and fixed scroll engage to form compression chamber；The mainframe Positioned at the side of the orbiter；Characterized in that, it is additionally provided with fuel feeding as claimed in claim 1 in the compression case body Adjusting means, and the cavity of the fuel control device is arranged on the fixed scroll.
- 9. screw compressor as claimed in claim 8, it is characterised in that the mainframe is provided with oil storage portion, the quiet whirlpool Capstan is provided with the first oil inlet passage radially extended along the fixed scroll, axially extending the along the fixed scroll Two oil inlet passages, the mainframe are provided with the 3rd axially extending oil inlet passage along the mainframe, along the mainframe The 4th oil inlet passage radially extended；Described first oil inlet passage one end connects with the oil inlet of the fuel control device, The other end connects with described second oil inlet passage one end；The second oil inlet passage other end and described 3rd oil inlet passage one end Connection, the 3rd oil inlet passage other end connect with described 4th oil inlet passage one end, the 4th oil inlet passage other end and the storage Oily portion's connection.
- 10. screw compressor as claimed in claim 9, it is characterised in that the first oil inlet passage other end also extends through institute The perisporium of fixed scroll is stated, forms the first breach；One end of 4th oil inlet passage also extends through the perisporium of the mainframe, shape Into the second breach；Seal is respectively provided with first breach and the second breach.
- 11. screw compressor as claimed in claim 8, it is characterised in that adjusted in the fuel control device with the fuel feeding It is external that the fueller of the oil inlet connection of regulating device is located at compression case, and the oil inlet is by through the compressor housing Oil inlet passage connected with the fueller.
- 12. the screw compressor as described in claim 9 or 11, it is characterised in that be provided with throttle part in the oil inlet passage.
- 13. screw compressor as claimed in claim 8, it is characterised in that adjusted in the fuel control device with the fuel feeding The fueller of the oil inlet connection of regulating device is oil sump at the lower cover, and the oil inlet is by along compressor housing Axially extending capillary connects with the oil sump.
- 14. a kind of air-conditioning system, including compressor, condenser, evaporator, and connect compressor, condenser and evaporator Coolant loop；Characterized in that, the compressor is the screw compressor described in claim any one of 8-13, or right will Seek the compressor described in 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610353162.2A CN105840520B (en) | 2016-05-24 | 2016-05-24 | Fuel control device, compressor, screw compressor and air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610353162.2A CN105840520B (en) | 2016-05-24 | 2016-05-24 | Fuel control device, compressor, screw compressor and air-conditioning system |
Publications (2)
| Publication Number | Publication Date |
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| CN105840520A CN105840520A (en) | 2016-08-10 |
| CN105840520B true CN105840520B (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610353162.2A Active CN105840520B (en) | 2016-05-24 | 2016-05-24 | Fuel control device, compressor, screw compressor and air-conditioning system |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH073229B2 (en) * | 1986-12-16 | 1995-01-18 | 松下電器産業株式会社 | Scroll gas compressor |
| JP3013079B2 (en) * | 1996-11-18 | 2000-02-28 | セイコー精機株式会社 | Gas compressor |
| US6884046B2 (en) * | 2002-03-04 | 2005-04-26 | Daiken Industries, Ltd. | Scroll compressor |
| JP4385722B2 (en) * | 2003-10-22 | 2009-12-16 | パナソニック株式会社 | Scroll compressor |
| US8337183B2 (en) * | 2009-09-21 | 2012-12-25 | Danfoss Scroll Technologies, Llc | Oil return valve for a scroll compressor |
| CN102996686B (en) * | 2012-12-04 | 2015-09-30 | 华南农业大学 | Eliminate oil channel structures and the method for work thereof of hydrodynamic retarder air-fuel mixture |
| CN205172938U (en) * | 2015-11-23 | 2016-04-20 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| CN205908466U (en) * | 2016-05-24 | 2017-01-25 | 广东美的暖通设备有限公司 | Fuel feeding adjusting device , compressor, scroll compressor and air conditioning system |
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2016
- 2016-05-24 CN CN201610353162.2A patent/CN105840520B/en active Active
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| CN105840520A (en) | 2016-08-10 |
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Effective date of registration: 20190109 Address after: 528300 Shun Feng Shan Industrial Development Zone, Shunde District, Foshan, Guangdong. Patentee after: GUANGDONG MEIZHI COMPRESSOR Co.,Ltd. Address before: 528311 Penglai Road industrial town, Beijiao Town, Shunde District, Foshan, Guangdong Co-patentee before: MIDEA GROUP Co.,Ltd. Patentee before: GD MIDEA HEATING & VENTILATING EQUIPMENT Co.,Ltd. |
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Effective date of registration: 20190514 Address after: 528300 3rd floor, 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee after: GUANGDONG MIDEA ENVIRONMENT TECHNOLOGY Co.,Ltd. Address before: 528300 Shun Feng Shan Industrial Development Zone, Shunde District, Foshan, Guangdong. Patentee before: GUANGDONG MEIZHI COMPRESSOR Co.,Ltd. |
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Effective date of registration: 20191121 Address after: 528300 3rd floor, 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan City, Guangdong Province Co-patentee after: GD MIDEA HEATING & VENTILATING EQUIPMENT Co.,Ltd. Patentee after: GUANGDONG MIDEA ENVIRONMENT TECHNOLOGY Co.,Ltd. Address before: 528300 3rd floor, 21 Gangqian Road, Industrial Park, Beijiao Town, Shunde District, Foshan City, Guangdong Province Patentee before: GUANGDONG MIDEA ENVIRONMENT TECHNOLOGY Co.,Ltd. |
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