CN105508246B - A kind of rolling rotor-type double-stage compressor - Google Patents
A kind of rolling rotor-type double-stage compressor Download PDFInfo
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- CN105508246B CN105508246B CN201610025248.2A CN201610025248A CN105508246B CN 105508246 B CN105508246 B CN 105508246B CN 201610025248 A CN201610025248 A CN 201610025248A CN 105508246 B CN105508246 B CN 105508246B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of rolling rotor-type double-stage compressor, it includes one-level cylinder, one-level exhaust cavity, increasing enthalpy part, secondary cylinder, the one-level exhaust cavity is connected with the exhaust outlet of the one-level cylinder, and by the air entry of intermediate flow channel and the secondary cylinder, the outlet of the increasing enthalpy part, wherein, the discharge capacity of the one-level cylinder is V1, the volume of the one-level exhaust cavity is V2, the volume of the one-level exhaust cavity, the volume of the increasing enthalpy part cavity is middle pressure chamber volume with the volume sum of the intermediate flow channel, it is designated as V5, wherein, 1<V2:V1<7, and 3<V5:V1<15.Rolling rotor-type double-stage compressor of the invention can reduce the pressure oscillation of tonifying Qi line check valve, eliminate inner elements of check valve chatter noise.
Description
Technical field
The present invention relates to Compressor Technology field, and in particular to a kind of rolling rotor-type double-stage compressor.
Background technology
Using the structure of built-in intermediate cavity more than existing rotator type Dual-level enthalpy adding compressor, middle compression refrigerant is straight by pipeline
Connect and be ejected into the intermediate cavity.In system operation, to prevent the refrigerant in intermediate cavity from pouring in down a chimney, typically in compressor increasing enthalpy mouthful
Check valve is installed, for example as shown in figures 1 to 6, check valve is arranged on magnetic valve and increasing enthalpy portion on the pipeline between flash vessel
Between part.When such Dual-level enthalpy adding compressor works, low pressure refrigerant is drained into intermediate cavity after one-level cylinder compression, then passes through
Intermediate cavity is inhaled into secondary cylinder.Because one-level cylinder exhaust process has intermittence, the pressure in intermediate cavity can produce ripple
Dynamic, this fluctuation of middle cavity pressure can be transferred to check valve by blowdown pipe, and cause the chatter of inner elements of check valve, so that
The problems such as producing abnormal sound.On the other hand, because system intermediate pressure sets too high or control shakiness, tonifying Qi band is also resulted in
Liquid so that excessive liquid refrigerant enters intermediate cavity and secondary cylinder, forms liquid hammer, causes compressor reliability to reduce.
Therefore, tonifying Qi line check valve vibrating noise how is effectively solved the problems, such as, and how prevents hiigh pressure stage absorbing gas belt
Liquid, raising compressor operating reliability, are those skilled in the art's puzzlement technical barriers for a long time.
The content of the invention
In view of the above-mentioned present situation of prior art, it is a primary object of the present invention to provide a kind of rolling rotor-type Two-stage Compression
Machine, its pressure oscillation that can reduce tonifying Qi line check valve, and then eliminate inner elements of check valve chatter noise.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of rolling rotor-type double-stage compressor, it includes one-level cylinder, one-level exhaust cavity, increasing enthalpy part, two grades of gas
Cylinder, the one-level exhaust cavity is connected with the exhaust outlet of the one-level cylinder, and by intermediate flow channel and the secondary cylinder
The outlet of air entry, the increasing enthalpy part, wherein, the discharge capacity of the one-level cylinder is V1, the one-level exhaust cavity
Volume is V2, the volume of the volume of the one-level exhaust cavity, the volume of the increasing enthalpy part cavity and the intermediate flow channel it
Be middle pressure chamber volume, be designated as V5, wherein, 1<V2:V1<7, and 3<V5:V1<15.
Preferably, the double-stage compressor is twin-tub double-stage compressor, lower flange that it includes setting gradually from bottom to top,
Lower cylinder, dividing plate, upper cylinder and upper flange, wherein, the lower cylinder is one-level cylinder, and the upper cylinder is secondary cylinder, institute
One-level exhaust cavity is stated to be arranged in the lower flange.
Preferably, the one-level displacement volume V1, one-level exhaust cavity volume V2, middle pressure chamber volume V5 meet：2<V2:V1
<4, and 5<V5:V1<10.
Preferably, the double-stage compressor is three cylinder double-stage compressors, lower flange that it includes setting gradually from bottom to top,
Lower cylinder, lower clapboard, middle cylinder, median septum, upper spacer, upper cylinder and upper flange, wherein the lower cylinder and the middle cylinder
It is one-level cylinder, the upper cylinder is secondary cylinder, and first exhaust cavity is provided with the lower flange, is set in the median septum
Second exhaust cavity is equipped with, the first exhaust cavity and the second exhaust cavity collectively constitute the one-level exhaust cavity.
Preferably, the discharge capacity of the lower cylinder is V11, and the discharge capacity of the middle cylinder is V12, V1=V11+V12, described the
The volume of one exhaust cavity is V21, and the volume of the second exhaust cavity is V22, V2=V21+V22, wherein, 1.5<V21:
V11<11, and 0.5<V 22:V12<5.
Preferably, the one-level displacement volume V1, one-level exhaust cavity volume V2, middle pressure chamber volume V5 meet：2<V2:V1
<5, and 5<V5:V1<11.
Preferably, the discharge capacity V11 of the lower cylinder, the discharge capacity V12 of the middle cylinder, the volume of the first exhaust cavity
V21, the volume V22 of the second exhaust cavity meets：4<V21:V11<8, and 1<V 22:V12<3.
Preferably, the lower cylinder includes lower cylinder body, lower roller and lower slide plate, wherein, the lower slide plate is slidably
In the vane slot on the lower cylinder body, the front end of the lower slide plate keeps being contacted with the lower roller；And/or,
The upper cylinder includes upper cylinder body, upper roller and upper slide plate, wherein, the upper slide plate is slidably disposed in described
In vane slot on upper cylinder body, the front end of the upper slide plate keeps and the upper roller contact.
Preferably, the lower cylinder includes lower cylinder body, lower roller and lower slide plate, wherein, the lower slide plate is slidably
In the vane slot on the lower cylinder body, the front end of the lower slide plate keeps being contacted with the lower roller；And/or,
The middle cylinder includes middle cylinder body, middle roller and middle slide plate, wherein, the middle slide plate is slidably disposed in described
In vane slot on middle cylinder body, the front end of the middle slide plate keeps and the middle roller contact；And/or,
The upper cylinder includes upper cylinder body, upper roller and upper slide plate, wherein, the upper slide plate is slidably disposed in described
In vane slot on upper cylinder body, the front end of the upper slide plate keeps and the upper roller contact.
Preferably, in the case where the lower cylinder includes lower cylinder body, lower roller and lower slide plate, in the lower flange
Pin hole is provided with, pin is slidably arranged in the pin hole, the lower slide plate is provided with slide plate cotter slot, the pin
Head is embedded in or is not embedded in the slide plate cotter slot to realize the locking to the lower slide plate or unblock.
Rolling rotor-type double-stage compressor of the invention can reduce the pressure oscillation of tonifying Qi line check valve, eliminate check valve
Valve element chatter noise.Meanwhile, rolling rotor-type double-stage compressor of the invention can also improve compressor performance, prevent two grades of air-breathings
Band liquid, improves reliability.
Brief description of the drawings
The preferred embodiment of rolling rotor-type double-stage compressor of the invention is described hereinafter with reference to accompanying drawing.Figure
In：
Fig. 1 is the double-stage compressor system operation principle schematic of one embodiment of the present invention；
Fig. 2 is the schematic appearance of the double-stage compressor in the implementation method of Fig. 1；
Fig. 3 is the double-stage compressor structure and refrigerant flowpath schematic diagram in the implementation method of Fig. 1；
Fig. 4 is the schematic diagram of the increasing enthalpy part volume in the implementation method of Fig. 1；
Fig. 5 is the lower flange structural representation in the implementation method of Fig. 1；
Fig. 6 is the double-stage compressor system operation principle schematic of another embodiment of the invention；
Fig. 7 is the schematic appearance of the double-stage compressor in the implementation method of Fig. 6；
Fig. 8 is the double-stage compressor structure and refrigerant flowpath schematic diagram in the implementation method of Fig. 6；
Fig. 9 is the median septum structural representation in the implementation method of Fig. 6；
Figure 10 is pressure wave at compressor increasing enthalpy component entry when double-stage compressor of the invention works under a kind of operating mode
Dynamic situation；
Figure 11 is pressure at compressor increasing enthalpy component entry when double-stage compressor of the invention works under another operating mode
Fluctuation situation；
Figure 12 is that the performance efficiency change of compressor when double-stage compressor of the invention works under another operating mode again becomes
Gesture.
Specific embodiment
For tonifying Qi line check valve vibrating noise problem present in prior art, and hiigh pressure stage absorbing gas belt liquid is asked
Topic, the present invention has found through studying and testing, by rationally setting the volume of one-level displacement volume and involving chamber, just can mitigate
Or eliminate foregoing problems.
Therefore, the invention provides a kind of rolling rotor-type double-stage compressor, typically, the double-stage compressor includes one-level
Cylinder, one-level exhaust cavity, increasing enthalpy part, secondary cylinder, wherein, the exhaust of the one-level exhaust cavity and the one-level cylinder
Mouth connection, and by intermediate flow channel and the air entry of the secondary cylinder, the outlet of the increasing enthalpy part.
For this kind of double-stage compressor, the discharge capacity of the one-level cylinder is designated as V1, the volume note of the one-level exhaust cavity
It is V2, the volume V2 of the one-level exhaust cavity, volume (being designated as V3) and the intermediate flow channel of the increasing enthalpy part cavity
Volume (being designated as V4) sum is referred to as middle pressure chamber volume, is designated as V5, i.e. V5=V2+V3+V4, then, when 1<V2:V1<7, and 3<V5:
V1<When 15, it is possible to decrease the pressure oscillation of tonifying Qi line check valve, inner elements of check valve chatter noise is eliminated, meanwhile, can also improve pressure
Contracting machine performance, prevents two grades of (hiigh pressure stage) absorbing gas belt liquid, improves reliability.
Preferably, referring first to Fig. 1, the double-stage compressor system of one embodiment of the present invention is that schematically illustrated
The operation logic figure of system.In present embodiment, the double-stage compressor is twin-tub double-stage compressor (its Exemplary Appearance schematic diagram
See Fig. 2, internal structure is shown in Fig. 3).The air-conditioning system of the twin-tub double-stage compressor mainly includes：Double-stage compressor (including compressor
Body, knockout part 21 and increasing enthalpy part 22), condenser 25, evaporator 24, flash vessel 23, one-level throttle mechanism 26, two grades
Throttle mechanism 27, four-way valve 28 etc., and magnetic valve 29 and check valve 30 are provided with increasing enthalpy loop.By controlling magnetic valve
29 opening and closing, just can realize the switch control to system increasing enthalpy.
The refrigerant circulating process of the system is：The gaseous state of compressor is flowed into through evaporator 24 (referred to here as the first loop)
After refrigerant carries out first compression through one-level cylinder, be drained into compressor one-level exhaust cavity, with through increasing enthalpy pipeline (referred herein to
It is second servo loop) after the refrigerant mixing that flows into, then be inhaled into secondary cylinder and carry out second-compressed, through the refrigeration after two-stage compression
Enter condenser 25 after agent discharge compressor, enter flash vessel 23 after being throttled through one-level throttle mechanism 26 after this, in flash vessel 23
Middle by shwoot, gaseous refrigerant flows into increasing enthalpy pipeline, and remaining liquid refrigerant through being subcooled is then through two-step throttle mechanism 27
Enter evaporator 24 after throttling, so far, complete a circulation.
Specifically, referring to Fig. 3, the twin-tub double-stage compressor include set gradually from bottom to top lower flange 2, lower cylinder 3,
Dividing plate 4, upper cylinder 5 and upper flange 6, wherein, the lower cylinder 3 is one-level cylinder, and the upper cylinder 5 is secondary cylinder, and
The one-level exhaust cavity 14 is arranged in the lower flange 2.
For above-mentioned twin-tub double-stage compressor, it is preferable that when the one-level displacement volume V1, one-level exhaust cavity volume
V2, middle pressure chamber volume V5 meet：2<V2:V1<4, and 5<V5:V1<When 10, tonifying Qi line check valve can be more effectively reduced
Pressure oscillation, eliminates inner elements of check valve chatter noise, meanwhile, compressor performance is also can further improve, prevent two grades of (high pressures
Level) absorbing gas belt liquid, improves reliability (for details, reference can be made to Figure 10-12).
Further, the twin-tub double-stage compressor for example also includes the cover plate 1 below lower flange 2, and it is for example under
Side closes one-level exhaust cavity 14.Intermediate flow channel 15 passes through lower flange 2, lower cylinder 3 and dividing plate 4 along the vertical direction, and is passed through
In upper cylinder 5.Bent axle 9 passes through upper cylinder 5 and lower cylinder 3,10 points of the lower roller in upper roller 11, lower cylinder 3 in upper cylinder 5
It is not set on the corresponding shaft part on bent axle 9, upper slide plate (not shown) is also included in upper cylinder 5, also includes gliding in lower cylinder 3
Piece (not shown).For example, the lower slide plate is slidably disposed in the vane slot on the lower cylinder body, before the lower slide plate
End keeps being contacted with the lower roller 10；The upper slide plate is slidably disposed in the vane slot on the upper cylinder body, described
The front end of upper slide plate keeps being contacted with the upper roller 11.When bent axle 9 rotates, upper roller 11 and lower roller 10 are in corresponding gas
Rolled in cylinder chamber body, while constituting the suction muffler of volume consecutive variations with corresponding slide plate (upper slide plate and lower slide plate) respectively
And discharge chamber, just can realize air-breathing, compression and be vented.
Bent axle 9, upper flange 6, upper cylinder 5, upper roller 11, dividing plate 4, lower cylinder 3, lower roller 10, lower flange 2 and cover plate 1
Deng composition pump assembly.Pump assembly is contained in housing unit, and the lower end and upper end of housing unit are hermetically provided with respectively
Lower cover 12 and cover assembly 13.Also include motor (it includes stator 7 and rotor 8) in housing unit, bent axle 9 connects with motor shaft
Connect.Foregoing compressor body refers to the compositions such as the pump assembly of cover assembly, housing unit, lower cover and inside, motor
It is overall.Upper lid exhaust outlet is arranged on cover assembly 13.
The operation logic of the twin-tub double-stage compressor is：Under the dragging of motor, pump assembly operating, from system first time
The refrigerant that road returns enters lower cylinder 3 by knockout part 21, goes out to one-level exhaust cavity by the first second compression heel row
In 14, then mixed into the refrigerant of pump assembly by increasing enthalpy part 22 with from system second servo loop, it is mixed
Refrigerant carries out the second second compression into upper cylinder 5, goes out to the upper space of compressor housing component through the second second compression heel row,
Discharged by upper lid exhaust outlet again, so far compressor completes the whole compression process of refrigerant.
Flow path of the refrigerant inside compressor is schematically illustrated by the arrow in Fig. 3.
Fig. 4 gives the typical structure of increasing enthalpy part 22, and it includes increasing enthalpy component entry 221 and increasing enthalpy knockdown export 222.
In the double-stage compressor of the present embodiment, increasing enthalpy knockdown export 222 is connected to lower flange 2, is directly communicated with one-level exhaust cavity 14.
Wherein, the cavity volume V3 of increasing enthalpy part refers to the total measurement (volume) between increasing enthalpy component entry 221 and increasing enthalpy knockdown export 222.
Fig. 5 gives the preferred structure of lower flange 2.The lower flange is included positioned at the axial boss 201 at middle part and positioned at week
The axial ledge 202 on side, the space between the axial boss 201 and the axial ledge 202 is the one-level exhaust cavity
14.The cavity bottom of the one-level exhaust cavity 14 is provided with exhaust outlet 141, and the exhaust outlet 141 constitutes of intermediate flow channel 15
Point.It is envisioned that the cavity bottom of one-level exhaust cavity 14 can also set another exhaust outlet (not shown), its for example with
The discharge chamber of lower cylinder is communicated.
Preferably, referring to Fig. 6, the double-stage compressor system of another embodiment of the invention is that schematically illustrated
Operation logic figure.In present embodiment, the double-stage compressor is that three cylinder double-stage compressors (be shown in by its Exemplary Appearance schematic diagram
Fig. 7, internal structure is shown in Fig. 8).The composition of the air-conditioning system of the three cylinders double-stage compressor and the twin-tub double-stage compressor shown in Fig. 1
Air-conditioning system composition it is basically identical, be also mainly to include：Double-stage compressor (including compressor body, knockout part 20
With increasing enthalpy part 22), condenser 25, evaporator 24, flash vessel 23, one-level throttle mechanism 26, two-step throttle mechanism 27, four-way valve
28 etc., and magnetic valve 29 and check valve 30 are provided with increasing enthalpy loop.By controlling the opening of magnetic valve 29 and closing, just
The switch control to system increasing enthalpy can be realized.
Specifically, referring to Fig. 8, the three cylinders double-stage compressor includes the lower flange 32, lower cylinder for setting gradually from bottom to top
33rd, lower clapboard 34, middle cylinder 35, median septum 36, upper spacer 37, upper cylinder 38 and upper flange 39, wherein the He of the lower cylinder 33
The middle cylinder 35 is one-level cylinder, and the upper cylinder 38 is secondary cylinder, first exhaust is provided with the lower flange 32 empty
Chamber 43a, is provided with second exhaust cavity 43b, the first exhaust cavity 43a in the median septum 36 and the second exhaust is empty
Chamber 43b collectively constitutes the one-level exhaust cavity 43, such as in first exhaust cavity 43a and second exhaust cavity 43b warps
Between runner 44 connect.
For above-mentioned three cylinders double-stage compressor, it is preferable that the discharge capacity of the lower cylinder is designated as V11, the row of the middle cylinder
Amount is designated as V12, then V1=V11+V12, and the volume of the first exhaust cavity is designated as V21, the volume of the second exhaust cavity
V22 is designated as, then V2=V21+V22, wherein, when these parameters meet：1.5<V21:V11<11, and 0.5<V 22:V12<When 5,
The pressure oscillation of tonifying Qi line check valve can be more effectively reduced, inner elements of check valve chatter noise is eliminated, meanwhile, can also enter one
Step improves compressor performance, prevents two grades of (hiigh pressure stage) absorbing gas belt liquid, improves reliability.
Preferably, when the one-level displacement volume V1, one-level exhaust cavity volume V2, middle pressure chamber volume V5 meet：2<V2:
V1<5, and 5<V5:V1<When 11, for reducing the pressure oscillation of tonifying Qi line check valve, eliminating inner elements of check valve chatter noise,
And prevent two grades of absorbing gas belt liquid, improve reliability advantageously.
It is further preferred that as the discharge capacity V11 of the lower cylinder, the discharge capacity V12 of the middle cylinder, the first exhaust is empty
The volume V21 in chamber, the volume V22 of the second exhaust cavity meets：4<V21:V11<8, and 1<V 22:V12<When 3, further
Advantageously reduce the pressure oscillation of tonifying Qi line check valve, eliminate inner elements of check valve chatter noise, and prevent two grades of absorbing gas belts
Liquid, raising reliability.
Further, for example also set below lower flange 32 (its structure is similar to the lower flange 2 in previous implementation method)
Cover plate 31 is equipped with, it for example from below closes first exhaust cavity 43a.Intermediate flow channel 44 passes through lower flange along the vertical direction
32nd, lower cylinder 33, lower clapboard 34, middle cylinder 35, median septum 36 and upper spacer 37, and be passed through in upper cylinder 38.Bent axle 9 passes through upper
Cylinder 38, middle cylinder 35 and lower cylinder 33, middle roller 41, lower cylinder 33 in upper roller 42, middle cylinder 35 in upper cylinder 38
In lower roller 40 be respectively sleeved on the corresponding shaft part on bent axle 9.
Preferably, the lower cylinder 33 include lower cylinder body, lower roller 40 and lower slide plate (not shown in Fig. 8, reference can be made to
Fig. 6), wherein, the lower slide plate is slidably disposed in the vane slot on the lower cylinder body, and the front end of the lower slide plate keeps
Contacted with the lower roller 40.
Similarly, the middle cylinder 35 include middle cylinder body, middle roller 41 and middle slide plate (not shown in Fig. 8, reference can be made to
Fig. 6), wherein, the middle slide plate is slidably disposed in the vane slot on the middle cylinder body, and the front end of the middle slide plate keeps
Contacted with the middle roller 41.
Similarly, the upper cylinder 38 includes upper cylinder body, upper roller 42 and upper slide plate, wherein, the upper slide plate is slided
It is located at dynamicly in the vane slot on the upper cylinder body, the front end of the upper slide plate keeps and the upper roller contact.
When bent axle 9 rotates, upper roller 42, middle roller 41 and lower roller 40 are rolled in corresponding cylinder body inner chamber,
Constitute the suction muffler and discharge chamber of volume consecutive variations with corresponding slide plate (upper slide plate, middle slide plate and lower slide plate) respectively simultaneously,
Just air-breathing, compression can be realized and is vented.
With previous implementation method similarly, bent axle 9, upper flange 39, upper cylinder 38, upper roller 42, upper slide plate, upper spacer
37th, median septum 36, middle cylinder 35, middle roller 41, middle slide plate, lower clapboard 34, lower cylinder 33, lower roller 40, lower slide plate, lower flange
32 and the grade of cover plate 31 composition pump assembly.Pump assembly is contained in housing unit, and the lower end of housing unit and upper end difference are close
Feud is provided with lower cover 12 and cover assembly 13.Also include motor (it includes stator 7 and rotor 8) in housing unit, bent axle 9 with
Motor shaft is connected.Foregoing compressor body refers to the pump assembly of cover assembly, housing unit, lower cover and inside, motor
Deng.Upper lid exhaust outlet is arranged on cover assembly 13.
Because the compressor of present embodiment is three cylinder double-stage compressors, lower cylinder and middle cylinder are one-level cylinder, because
This, knockout part 20 has two output pipes (as Figure 7-8), is respectively connecting to the air-breathing of lower cylinder and middle cylinder
Mouthful.
In present embodiment, the structure of increasing enthalpy part 22 is identical with the increasing enthalpy part 22 in previous implementation method.Different
It is that in present embodiment, the outlet 222 of increasing enthalpy part 22 is connected on the body of upper cylinder 38, directly with the air-breathing of upper cylinder
Mouth is communicated, and is communicated with intermediate flow channel 44, so as to also be communicated with one-level exhaust cavity 43.
The operation logic of the three cylinders double-stage compressor is：Under the dragging of motor, pump assembly operating, from system first time
The refrigerant that road returns respectively enters lower cylinder 33 and middle cylinder 35 by knockout part 20, goes out by the first second compression heel row
(the cavity 43a that lower cylinder 33 is entered in lower flange, the cavity that middle cylinder is entered in median septum into one-level exhaust cavity 43
43b), then mixed into the refrigerant of pump assembly by increasing enthalpy part 22 with from system second servo loop, it is mixed
Refrigerant carries out the second second compression into upper cylinder 38, goes out through the second second compression heel row empty to the top of compressor housing component
Between, then discharged by upper lid exhaust outlet, so far compressor completes the whole compression process of refrigerant.
Flow path of the refrigerant inside compressor is schematically illustrated by the arrow in Fig. 8.
Fig. 9 gives the preferred structure of median septum 36.The median septum 36 is generally discoideus, its one side towards upper spacer
Cavity is provided with, the cavity is second exhaust cavity 43b, two exhaust outlets 431 and 432 is additionally provided with the bottom of cavity,
One of exhaust outlet 431 is used for example as the exhaust outlet of middle cylinder 35 so that it is empty that the exhaust of middle cylinder can enter second exhaust
In the 43b of chamber, another exhaust outlet 432 for example constitutes a part for intermediate flow channel 44 so that second exhaust cavity 43b can be with
One exhaust cavity 43a is communicated.For example, as shown in figure 9, exhaust outlet 431 be circular hole, exhaust outlet 432 be elongated hole.
Preferably for the lower cylinder in present embodiment, can also be further arranged to (such as can compares figure 6)：Institute
State and be provided with pin hole in lower flange 32, pin is slidably provided with the pin hole, the lower slide plate is provided with slide plate pin
Nail groove, the head of the pin can be embedded in or not be embedded in the slide plate cotter slot to realize to the locking of the lower slide plate or
Unblock.When in the head insertion slide plate cotter slot of pin, lower slide plate is locked in its vane slot so that before it can not keep
End contacts with lower roller, so that lower cylinder can not complete air-breathing, compression, the process of exhaust, lower cylinder is therefore at unloaded state.
When pin head is disengaged from slide plate cotter slot, pin is located in pin hole on the whole, and lower slide plate is unlocked, thus can be in cunning
Slided in film trap, so as to keep front end to be contacted with lower roller, lower cylinder can normally complete air-breathing, compression, the process of exhaust,
Lower cylinder is therefore at working condition.By controlling the position of pin, so as to control work or the unloaded state of lower cylinder, can be with
Transfiguration control is carried out to compressor.
Illustrate that (namely increasing enthalpy part enters increasing enthalpy line check valve is reduced for compressor of the invention with reference to result of the test
Mouthful place) pressure oscillation aspect and the beneficial effect that is showed in terms of raising compressor performance.
As shown in Figure 10, (0 DEG C of evaporating temperature, 41 DEG C of condensation temperature, 32 DEG C of supercooling temperature, air-breathing temperature under a kind of operating mode
7 DEG C of degree), pressure oscillation situation at the increasing enthalpy component entry that compressor (three cylinders) of the invention is surveyed at work.In figure, horizontal seat
Frequency (Hz) is designated as, ordinate is pressure oscillation value.Two curves are represented " V2/V1=3.3, V5/V1=4.39 " respectively in figure
Two kinds of settings of " V2/V1=3.3, V5/V1=9.11 ".As can be seen that the latter is substantially better than in terms of pressure oscillation is reduced
The former.In addition, for both settings, with the increase of frequency, the value of pressure oscillation is all presented downward trend substantially, especially
It is that after frequency reaches 50Hz, significantly decline all occurs in the value of pressure oscillation.
Figure 11 is (9 DEG C of evaporating temperature, 51 DEG C of condensation temperature, 40 DEG C of supercooling temperature, suction temperature 21 under another operating mode
DEG C), pressure oscillation situation at the increasing enthalpy component entry that compressor (three cylinders) of the invention is surveyed at work.Similarly, in figure,
Abscissa is still frequency (Hz), and ordinate is still pressure oscillation value, and two curves still represent " V2/V1=3.3, V5/ respectively in figure
Two kinds of settings of V1=4.39 " and " V2/V1=3.3, V5/V1=9.11 ".As can be seen that compressor of the invention is in this operating mode
Under rule shown in effect and Figure 10 in terms of reduce pressure oscillation coincide substantially, fully demonstrate compressor of the invention
By rationally setting the technique effect acquired by the relation between each discharge capacity, volume.
Figure 12 is (9 DEG C of evaporating temperature, 51 DEG C of condensation temperature, 40 DEG C of supercooling temperature, suction temperature 21 under another operating mode
DEG C), its performance efficiency (is represented, is compressor monomer refrigerating capacity compressor (three cylinders) of the invention with COP at 60 hz
With the ratio of power consumption) with the variation tendency of ratio V2/V1.As can be seen that being, for example, less than 1 when the value of V2/V1 is smaller in figure
When, the performance efficiency of compressor is relatively low, and the increase of the value with V2/V1, performance efficiency the becoming in monotone increasing of compressor
Gesture, particularly when the value of V2/V1 is reached after 1, the performance efficiency of compressor has reached 3.15, and is then gradually tending to steady
Fixed, such as, when the value of V2/V1 is reached after 5, the lifting of the performance efficiency of compressor is not obvious.Therefore, it is of the invention by V2/V1
Basic span be defined as between 1~7.
To sum up, the present invention is mainly held by reasonable set one-level displacement volume, one-level exhaust cavity volume and middle pressure chamber
The relation of product etc., reduces the pressure oscillation of intermediate cavity, and having reached reduces the pressure oscillation of tonifying Qi line check valve, eliminates unidirectional
The effect of valve core chatter noise.On the other hand, by reasonable set forgoing relationship, while also having reached raising compressor performance
With reliability, prevent two grades of effects of absorbing gas belt liquid.
Those skilled in the art is it is easily understood that on the premise of not conflicting, above-mentioned measures can be freely
Combination, superposition.
It should be appreciated that above-mentioned implementation method is only illustrative, and not restrictive, without departing from of the invention basic
In the case of principle, various obvious or equivalent modification or replace that those skilled in the art can make for above-mentioned details
Change, be all included in scope of the presently claimed invention.
Claims (10)
1. a kind of rolling rotor-type double-stage compressor, it includes one-level cylinder, one-level exhaust cavity, increasing enthalpy part, secondary cylinder,
The one-level exhaust cavity is connected with the exhaust outlet of the one-level cylinder, and by the air-breathing of intermediate flow channel and the secondary cylinder
Mouth, the outlet of the increasing enthalpy part, it is characterised in that the discharge capacity of the one-level cylinder is V1, the one-level exhaust cavity
Volume be V2, the volume of the volume of the one-level exhaust cavity, the volume of the increasing enthalpy part cavity and the intermediate flow channel
Sum is middle pressure chamber volume, is designated as V5, wherein, 1<V2:V1<7, and 3<V5:V1<15.
2. rolling rotor-type double-stage compressor according to claim 1, it is characterised in that the double-stage compressor is twin-tub
Double-stage compressor, it includes the lower flange, lower cylinder, dividing plate, upper cylinder and the upper flange that set gradually from bottom to top, wherein, institute
Lower cylinder is stated for one-level cylinder, the upper cylinder is secondary cylinder, the one-level exhaust cavity is arranged in the lower flange.
3. rolling rotor-type double-stage compressor according to claim 2, it is characterised in that the one-level displacement volume V1,
One-level exhaust cavity volume V2, middle pressure chamber volume V5 meet：2<V2:V1<4, and 5<V5:V1<10.
4. rolling rotor-type double-stage compressor according to claim 1, it is characterised in that the double-stage compressor is three cylinders
Double-stage compressor, lower flange that it includes setting gradually from bottom to top, lower cylinder, lower clapboard, middle cylinder, median septum, upper spacer,
Upper cylinder and upper flange, wherein the lower cylinder and the middle cylinder are one-level cylinder, the upper cylinder is secondary cylinder, described
First exhaust cavity is provided with lower flange, second exhaust cavity is provided with the median septum, the first exhaust cavity and
The second exhaust cavity collectively constitutes the one-level exhaust cavity.
5. rolling rotor-type double-stage compressor according to claim 4, it is characterised in that the discharge capacity of the lower cylinder is
V11, the discharge capacity of the middle cylinder is V12, V1=V11+V12, and the volume of the first exhaust cavity is V21, the second row
The volume of gas cavity be V22, V2=V21+V22, wherein, 1.5<V21:V11<11, and 0.5<V 22:V12<5.
6. the rolling rotor-type double-stage compressor according to claim 4 or 5, it is characterised in that the one-level displacement volume
V1, one-level exhaust cavity volume V2, middle pressure chamber volume V5 meet：2<V2:V1<5, and 5<V5:V1<11.
7. rolling rotor-type double-stage compressor according to claim 6, it is characterised in that the discharge capacity V11 of the lower cylinder,
The discharge capacity V12 of the middle cylinder, the volume V21 of the first exhaust cavity, the volume V22 of the second exhaust cavity meet：4
<V21:V11<8, and 1<V 22:V12<3.
8. the rolling rotor-type double-stage compressor according to Claims 2 or 3, it is characterised in that under the lower cylinder includes
Cylinder body, lower roller and lower slide plate, wherein, the lower slide plate is slidably disposed in the vane slot on the lower cylinder body,
The front end of the lower slide plate keeps being contacted with the lower roller；And/or,
The upper cylinder includes upper cylinder body, upper roller and upper slide plate, wherein, the upper slide plate is slidably disposed in the upper gas
In vane slot on cylinder body, the front end of the upper slide plate keeps and the upper roller contact.
9. the rolling rotor-type double-stage compressor according to claim 4,5 or 7, it is characterised in that the lower cylinder includes
Lower cylinder body, lower roller and lower slide plate, wherein, the lower slide plate is slidably disposed in the vane slot on the lower cylinder body
In, the front end of the lower slide plate keeps being contacted with the lower roller；And/or,
The middle cylinder includes middle cylinder body, middle roller and middle slide plate, wherein, the middle slide plate is slidably disposed in the middle gas
In vane slot on cylinder body, the front end of the middle slide plate keeps and the middle roller contact；And/or,
The upper cylinder includes upper cylinder body, upper roller and upper slide plate, wherein, the upper slide plate is slidably disposed in the upper gas
In vane slot on cylinder body, the front end of the upper slide plate keeps and the upper roller contact.
10. rolling rotor-type double-stage compressor according to claim 9, it is characterised in that in the case where the lower cylinder includes
In the case of cylinder body, lower roller and lower slide plate, pin hole is provided with the lower flange, pin is slidably arranged in the pin
In nail, the lower slide plate is provided with slide plate cotter slot, in the head insertion of the pin or the not embedded slide plate cotter slot
To realize the locking to the lower slide plate or unblock.
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| CN201610025248.2A CN105508246B (en) | 2016-01-13 | 2016-01-13 | A kind of rolling rotor-type double-stage compressor |
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| CN201610025248.2A CN105508246B (en) | 2016-01-13 | 2016-01-13 | A kind of rolling rotor-type double-stage compressor |
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| CN106247657A (en) * | 2016-07-22 | 2016-12-21 | 西安交通大学 | A kind of carbon dioxide refrigerator refrigeration system |
| CN111306033A (en) * | 2018-12-11 | 2020-06-19 | 广东美芝精密制造有限公司 | Two-stage compressor and refrigerating device |
| CN109488595A (en) * | 2018-12-12 | 2019-03-19 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
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| CN103362807B (en) * | 2012-04-10 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, the air conditioning system with this compressor and heat pump water heater system |
| CN103807175B (en) * | 2012-11-13 | 2016-11-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Birotor two-stage enthalpy-increasing compressor, air-conditioner and Teat pump boiler |
| CN103967790B (en) * | 2013-02-04 | 2016-10-05 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and there is the heat pump of this compressor |
| CN104047857B (en) * | 2013-03-15 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of two rotors two-stage increases enthalpy compressor |
| CN104632626B (en) * | 2014-06-27 | 2018-02-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Two-stage enthalpy increasing rotor-type compressor and air conditioner |
| CN204371674U (en) * | 2014-12-24 | 2015-06-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor |
| CN205277814U (en) * | 2016-01-13 | 2016-06-01 | 珠海格力节能环保制冷技术研究中心有限公司 | Rolling rotor formula double stage compressor |
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