CN103821719A - Volume control type rotary compressor and refrigeration circulating device with same - Google Patents
Volume control type rotary compressor and refrigeration circulating device with same Download PDFInfo
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- CN103821719A CN103821719A CN201410046931.5A CN201410046931A CN103821719A CN 103821719 A CN103821719 A CN 103821719A CN 201410046931 A CN201410046931 A CN 201410046931A CN 103821719 A CN103821719 A CN 103821719A
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- 238000005057 refrigeration Methods 0.000 title abstract description 3
- 230000006835 compression Effects 0.000 claims abstract description 84
- 238000007906 compression Methods 0.000 claims abstract description 84
- 238000007789 sealing Methods 0.000 claims description 22
- 230000005520 electrodynamics Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000005192 partition Methods 0.000 abstract 4
- 238000005247 gettering Methods 0.000 description 9
- 230000030279 gene silencing Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000009849 deactivation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a volume control type rotary compressor and a refrigeration circulating device with the same. A compressing mechanism of the volume control type rotary compressor comprises a first air cylinder, a second air cylinder, a middle partition plate, a first piston, a second piston, a first gliding sheet, a second gliding sheet, a second sliding sheet cavity, a pressure switcher, wherein the first air cylinder and the second air cylinder respectively comprise a first compression cavity and a second compression cavity; the middle partition plate is arranged between the first air cylinder and the second air cylinder; the first piston rod and the second piston rod are located in the first compression cavity and the second compression cavity respectively to revolve; the first gliding sheet and the second gliding sheet can reciprocate; the second gliding sheet cavity is located in the second air cylinder to accommodate the back of the second gliding sheet; the pressure switcher enables the pressure of the sealed second sliding sheet cavity to switch between different two types; the middle partition plate is connected with an air suction pipe; the thickness of the middle partition plate is Hm; the thickness of the first air cylinder is Ha; the thickness of the second air cylinder is Hb; the three thicknesses meet the following relation: Hm<3> is larger than Ha<3> plus Hb<3>. The volume control type rotary compressor improves efficiency of the compressor.
Description
Technical field
The present invention relates to refrigerating field, especially relate to a kind of volume controlled type rotary compressor and there is its refrigerating circulatory device.
Background technique
The capacity controlled rotary compressor of twin-tub, with respect to P pattern, S pattern can worsen several percent points.Its main cause is as follows: in S pattern, (1) because connecting the sucking pipe of each cylinder is independently, so operating cylinder can not suck the air-breathing of cylinder in stopping.(2) for the lifting of compression efficiency, cylinder thickness is restricted, so can not expand air intake passage, improves gettering efficiency.(3), even if refrigerating capacity reduces by half, due to the rotation of piston and eccentric shaft, slippage loss can not reduce by half.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical problem in correlation technique.
For this reason, one object of the present invention is to propose a kind of volume controlled type rotary compressor, has improved compressor efficiency.
Another object of the present invention is to propose a kind of refrigerating circulatory device with above-mentioned volume controlled type rotary compressor.
According to the volume controlled type rotary compressor of the embodiment of the present invention, comprising: seal casinghousing; Electrodynamic machine, described electrodynamic machine is located in described seal casinghousing; Rotary compressor structure, described rotary compressor structure is located in described seal casinghousing and is connected with described electrodynamic machine, and described rotary compressor structure comprises: the first cylinder and second cylinder separately with the first compression chamber and the second compression chamber; Be located at the central diaphragm between described the first cylinder and the second cylinder, and in described central diaphragm, there is the suction port to described the first compression chamber and described the second compression chamber opening; The first piston and the second piston that in described the first compression chamber and described the second compression chamber, revolve round the sun respectively; Along with the revolution separately of these first pistons and the second piston can be carried out the first slide plate and second slide plate of reciprocal action, and in described the second cylinder, there is the second slide plate chamber at the back of having received described the second slide plate; Make the pressure in the described second slide plate chamber of sealing switch the pressure switcher so that the compression of described the second cylinder is stopped or removing to stop between 2 different pressure, wherein central diaphragm is connected with sucking pipe; The thickness of described central diaphragm is that the thickness of Hm, described the first cylinder is that the thickness of Ha, described the second cylinder is that Hb meets following relation:
Hm
3>Ha
3+Hb
3。
According to the volume controlled type rotary compressor of the embodiment of the present invention, in the S pattern of the second compression chamber cylinder deactivation, the low-pressure gas sucking from sucking pipe only flows to the first compression chamber, so improved the gettering efficiency of the first compression chamber, has improved compressor efficiency.
In addition, volume controlled type rotary compressor according to the above embodiment of the present invention can also have following additional technical characteristics:
In examples more of the present invention, the thickness of the thickness of the first cylinder and the second cylinder equates.
According to some embodiments of the present invention, described pressure switcher is communicated with described the second slide plate chamber by described central diaphragm.
According to some embodiments of the present invention, the open part in described the second slide plate chamber connects deformable sealing plate with described the second slide plate is remained in described the second slide plate chamber.
Particularly, described sealing plate deflection be more than 12 μ m.
Particularly, described pressure switcher is three-way valve or four-way valve.
According to the refrigerating circulatory device of the embodiment of the present invention, comprise volume controlled type rotary compressor according to the above embodiment of the present invention.
Accompanying drawing explanation
The internal structure that Fig. 1 represents twin-tub volume controlled type rotary compressor and the formation of freezing cycle device that is connected this compressor, in addition, represent that operating mode switches the operating principle of needed three-way valve;
Fig. 2 represents the detailed longitudinal section (P template) of compressing mechanism; Central diaphragm is the F-X-G sectional view of Fig. 3, and cylinder is the E-X-G sectional view of Fig. 3;
Fig. 3 represents the configuration of structure and the piston slide plate of cylinder, in addition, represents to connect the sucking pipe of central diaphragm and pressure and switch the planimetric map (P pattern) of pipe, in addition, be the Y cross section of Fig. 1;
Fig. 4 represents that the pressure that connects central diaphragm switches the longitudinal section (P pattern) in pipe and slide plate chamber, is the sectional view of the E-X-G of Fig. 3;
Fig. 5 represents to deviate from from the piston of rotation, at the planimetric map (S pattern) of the static slide plate in slide plate chamber, in addition, is the Y cross section of Fig. 1;
Fig. 6 represent due to sealing plate distortion and the planimetric map (S pattern) of static slide plate in addition, is the Z cross section of Fig. 1;
Fig. 7 presentation graphs 2(P pattern) the detailed longitudinal section (S pattern) of corresponding compressing mechanism, central diaphragm is the F-X-G sectional view of Fig. 6, cylinder is the E-X-G sectional view of Fig. 6;
Fig. 8 is compressor and refrigerating capacity data of the present invention comparison in the past;
Fig. 9 is compressor and COP data of the present invention comparison in the past.
Embodiment
Describe embodiments of the invention below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
One side of 2 cylinder compression chambers carries out non-compression operation, compressor capacity is carried out to the volume controlled type rotary compressor of 2 sections of switchings, have as shown in [patent documentation 1], " compression chamber's pressure switching mode " method that the suction pressure of one side's compression chamber is switched in high pressure and low pressure, and shown in [patent documentation 2] and [Patent Document 3], make the method for " slide plate cavity pressure switching mode " that the pressure in slide plate chamber of sealing switches between high pressure and low pressure.Their feature is all to make the reciprocating action of slide plate in the short time, stop and being accommodated in slide plate chamber.
Twin-tub volume controlled type rotary compressor, there is operating mode (P pattern) that 2 compression chambers compress operating mode and a side compression chamber and compress operation, the opposing party's compression chamber stop compression operation operation mode (S pattern), control the refrigerating capacity of compressor by these two 2 different operating modes.Its result, such as controlling air-conditioning cold flow and power consumption.
Above-mentioned " compression chamber pressure switching mode ", connected enclosure interior (high tension loop), the pressure of a side of the sucking pipe (low tension loop) that is connected with 2 cylinders and three-way valve (or four-way valve), compression chamber switches between high pressure and low pressure.By this control, the compression of a side compression chamber can stop, or releasing stops.Therefore, " compression chamber pressure switching type " need to connect respectively in each cylinder independently sucking pipe.
For this point, " slide plate cavity pressure switching mode " can make the slide plate chamber sealing of a side cylinder, and its internal pressure is switched between high pressure and low pressure, (the P pattern) launching to stop (the S pattern) of compression chamber compression or remove cylinder deactivation.Therefore,, in " the pressure switching mode in slide plate chamber ", not necessarily to connect in 2 cylinders independently sucking pipe.The present invention, is conceived to the essence of " slide plate cavity pressure switching mode ", and feature is that sucking pipe does not connect cylinder, has 1 air intake passage, and compression chamber separately connects central diaphragm.And the operational efficiency of the S pattern that the operation frequency is many promotes, and is main purpose.
In addition, the slide plate of slide plate chamber in order to keep stopping, " compression chamber pressure switching mode " is to use magnet [patent documentation 1], in " slide plate cavity pressure switching mode ", is to have acted on height pressure reduction (patent documentation 2 and Patent Document 3) in slide plate bi-side
According to the volume controlled type rotary compressor of the embodiment of the present invention, slope hole 43a and slope hole 43b that the low tension outlet pipe 72 of liquid-storage container 70 possesses from the tip of the inlet hole 45 of intermediate plate 40 through suction pipe 41 are communicated with compression chamber 13a and compression chamber 13b.Two compression chambers all compress in the P pattern of operation, the low-pressure gas that flows out, can equalization be diverted to above-mentioned 2 compression chambers from sucking pipe 41.Compression chamber 13b stops in the S mode operation of compression, and the whole of low-pressure gas only flow in compression chamber 13a, so the gettering efficiency of compression chamber 13a can promote.
So the improved efficiency that is about 3 times of S patterns of P pattern about annual operation ratio, general S pattern can have very large contribution to improving annual efficiency (APF).And the present invention is improved the spread effect of P pattern efficiency.In addition, by connect a sucking pipe in central diaphragm, two sucking pipes can be reduced to one.In addition, can improve as described later the connection design in pressure switching pipe and slide plate chamber.
Wherein, [patent documentation 1] JP JP2004301114 rotating seal type compressor and refrigerating circulatory device
[patent documentation 2] JP JP2008520901 volume variable rotating compressor and cooling system thereof
[Patent Document 3] JP JP2008128231 volume variable rotating compressor
Particularly, according to the volume controlled type rotary compressor 80 of the embodiment of the present invention, comprise seal casinghousing 1, electrodynamic machine 6 and rotary compressor structure 5, electrodynamic machine 6 is located in seal casinghousing 1.Rotary compressor structure 5 is located in seal casinghousing 1 and is connected with electrodynamic machine 6.Wherein, compressing mechanism 5 comprises: the first cylinder 10a and the second cylinder 10b separately with the first compression chamber 13a and the second compression chamber 13b, be located at the central diaphragm 40 between the first cylinder 10a and the second cylinder 10b, in central diaphragm 40, there is the suction port 45 to the first compression chamber 13a and the second compression chamber 13b opening, the first piston 24a revolving round the sun respectively in the first compression chamber 13a and the second compression chamber 13b and the second piston 24b, along with the revolution separately of these first pistons 24a and the second piston 24b can be carried out the first slide plate 20a and the second slide plate 20b of reciprocal action, and in the second cylinder 10b, there is the second slide plate chamber 15b at the back of having received the second slide plate 20b, make the pressure of the second slide plate chamber 15b of sealing switch the pressure switcher so that the compression of the second cylinder 10b is stopped or removing to stop between 2 different pressure, wherein central diaphragm 40 is connected with sucking pipe 41.Alternatively, pressure switcher is three-way valve 50 or four-way valve.
Wherein, the thickness of central diaphragm 40 is that the thickness of Hm, the first cylinder 10a is that the thickness of Ha, the second cylinder 10b is that Hb meets following relation:
Hm
3＞Ha
3+Hb
3。
According to the volume controlled type rotary compressor 80 of the embodiment of the present invention, in the S pattern of the second compression chamber 13b cylinder deactivation, the low-pressure gas sucking from sucking pipe 41 only flows to the first compression chamber 13a, so improved the gettering efficiency of the first compression chamber 13a, has improved compressor efficiency.
In examples more of the present invention, the thickness of the thickness of the first cylinder 10a and the second cylinder 10b equates.
Particularly, pressure switcher is communicated with the second slide plate chamber 15b by central diaphragm 40.
According to some embodiments of the present invention, the open part of the second slide plate chamber 15b connects deformable sealing plate 16, now, due to the distortion of the sealing plate 16 that the pressure reduction of two of sealing plate 16 plane effects is brought, the second slide plate 20b can be remained in the second slide plate chamber 15b.Particularly, the deflection of sealing plate 16 is more than 12 μ m.
According to the refrigerating circulatory device of the embodiment of the present invention, comprise volume controlled type rotary compressor according to the above embodiment of the present invention, condenser, expansion gear, vaporizer.
It should be noted that, the annexation between volume controlled type rotary compressor, condenser, expansion gear, vaporizer is prior art, is just not described in detail here.
Describe according to the volume controlled type rotary compressor of the specific embodiment of the invention below with reference to Fig. 1-Fig. 9, wherein cylinder 10a refers to the first cylinder, cylinder 10b refers to the second cylinder, compression chamber 13a refers to the first compression chamber, compression chamber 13b refers to the second compression chamber, slide plate 20a refers to the first slide plate, slide plate 20b refers to the second slide plate, piston 24a refers to first piston, piston 24b refers to the second piston, slide plate chamber 15a refers to the first slide plate chamber, and slide plate chamber 15b refers to the second slide plate chamber.
Example of the present invention describes according to Fig. 1-Fig. 9.On the capacity controlled rotary compressor of twin-tub shown in Fig. 1 (hereinafter to be referred as rotary compressor 80), internal diameter by housing 1, fixing electrodynamic machine 6 and compressing mechanism 5 forms.Fixing main bearing 25 and supplementary bearing 30, main bearing silencing apparatus 26 and the supplementary bearing silencing apparatus 33 in the cylinder A10a that compressing mechanism 5 is configured up and down by central diaphragm 40 and cylinder B10b, its top, the eccentric shaft 7 that is carried out sliding support by main bearing 25 and supplementary bearing 30 etc. form.The periphery of circular central diaphragm 40 is fixed on the inner radius of housing 1.
The pressurized gas of discharging from the outlet pipe 3 of seal casinghousing 1 become low-pressure gas through condenser C, expansion valve V, vaporizer E, arrive in liquid-storage container 70.Afterwards, low-pressure gas is from sucking pipe (or being called suction pipe) 41(Fig. 2 of the periphery of connection central diaphragm 40) flow into cylinder 10a and cylinder 10b.Pressurized gas after compression from main bearing silencing apparatus 26 to housing 2 discharge.And the thickness of 2 cylinders and discharge capacity are also suitable.But according to application target, cylinder thickness and discharge capacity separately can suitably change.
Three-way valve 50 that the outside of housing 1 possesses, be the means of the compression of cylinder 10b when stopping or removing the formula compressor 80 that stops the rotation and be in operation.Three-way valve 50 has 3 connection mouths, and high-pressure mouth 50a connects the high-voltage tube 52 to housing 1 inside opening.Low pressure port 50b connects the low tension outlet pipe 72 of liquid-storage container 70, the pressure that the periphery of high low pressure mouth 50c connection central diaphragm 40 possesses switches pipe 55.As described later, pressure switch pipe 55 connect sealing slide plate chamber 15b, the pressure in this chamber is switched between high pressure and low pressure.The inside of three-way valve 50 possesses the slide block 57 that can slide.Slide block 57 is driven by the electromagnetic coil (without diagram) that forms three-way valve 50.In addition, also can use four-way valve to replace three-way valve.
The P-mode of Fig. 1 is the position to high low pressure mouth 50c opening at slide block 57, is high pressure (Pd) suitable with the interior pressure of housing 1 so coupled pressure switches the pressure of pipe 55.When 2 cylinders start compression in capacity controlled rotary compressor 80, can bring into play 100% refrigerating capacity.This P pattern that operates to of 100%.
On the other hand, while making slide block 57 move to the S-mode of Fig. 1 by control, it is the low pressure (Ps) equating with the pressure of low tension outlet pipe 72 that pressure switches pipe 55.Now, the compression of cylinder 10b can stop in rotary compressor 80, so can drop to 50% refrigerating capacity.This operation is called S pattern.Like this, possess the operating rotary compressor 80 of volume control function, by the control of three-way valve 50, between P pattern and S pattern, can carry out pattern switching comfortablely.
The pressure that the pressure of Fig. 2 switches pipe 55 is high pressure (Pd), so be that P pattern is in operation.In compression chamber 13a and compression chamber 13b that cylinder A10a and cylinder B10b possess separately, piston 24a and piston 24b revolve round the sun.Move back and forth with the slide plate 20a of the external diameter butt of these pistons and the vane slot inside that slide plate 20b processes in cylinder.In addition, the back of these slide plates is made up of slide plate chamber 15a and slide plate chamber 15b.
Possesses the upper end of slide plate chamber 15a of sliding blade spring 21a to housing 1 split shed, so its pressure is high pressure side.On the other hand, the upper end open face of slide plate chamber 15b is in central diaphragm 40 places sealing, and lower ending opening face is by sealing by the fixing sealing plate 16 of rivet 18.In addition, slide plate chamber 15b has abolished sliding blade spring.The sucking pipe 41 being pressed in the suction port 45 of processing in central diaphragm 40, the low tension outlet pipe 72 that connects liquid-storage container 70.The tip part of suction port 45 possess Pour inclined hole 43a He Pour inclined hole 43b respectively to compression chamber 13a and compression chamber 13b opening.
In Fig. 2, it is high pressure (Pd) that pressure switches pipe 55, so slide plate 20b and slide plate 20a move back and forth with piston butt respectively by the phase place of 180 degree, compression chamber 13a and compression chamber 13b carry out common compression (P pattern).In P pattern, the low-pressure gas that the suction port 45 from liquid-storage container 70 to central diaphragm 40 flows into, is diverted to respectively the slope hole 43a to 2 cylinder opening on an equal basis with Pour inclined hole 43b is compressed in compression chamber 13a and compression chamber 13b.Be discharged in main bearing silencing apparatus 26 and supplementary bearing silencing apparatus 33, thereafter.The pressurized gas of discharging in supplementary bearing silencing apparatus 33 are discharged to the bottom of motor 6 by intercommunicating pore 28 and the pressurized gas interflow of main bearing silencing apparatus 26.
Compared with capacity controlled compressor in the past, in order to reduce the inhalation resistance of low-pressure gas, improve gettering efficiency, need to expand the internal diameter of suction port 45.In order to meet this necessary condition, the present invention designs by following formula.
Hm
3>Ha
3+Hb
3
As shown in Figure 2, Hm is that thickness, Ha and the Hb of central diaphragm 40 are respectively the thickness of cylinder A10a and cylinder A10a.At this, 1 power that the pressure loss of pipe arrangement (Δ P) is long to 3 powers, the pipe arrangement of pipe arrangement internal diameter is directly proportional.This is to determine according to the Fanning formula of Theorem deduction.In addition, the total length in the air-breathing loop including liquid-storage container, with design in the past, the situation that is connected cylinder with sucking pipe there is not difference.
According to above-mentioned inequality, the reason that substitutes the thickness of effect, use central diaphragm 40 and each cylinder of suction pipe or inlet hole is: the present invention need not be connected respectively the suction pipe of cylinder, can in central diaphragm 40, connect 1 suction pipe, also have, inlet hole internal diameter or suction pipe external diameter can not be larger than the thickness of cylinder or central diaphragm., the thickness of cylinder or central diaphragm can substitute as suction pipe internal diameter or inlet hole external diameter.And example of the present invention is Ha=Hb.
So the present invention is because be to configure inlet hole 45 to be easy to expand its internal diameter in central diaphragm 40.As a case, if Ha=Hb=15mm, Hm=20mm, the pressure loss (Δ P) approximately improves 19%.It improves effect and can improve the gettering efficiency of P pattern and aftermentioned S pattern.
In Fig. 3 and Fig. 4, the pressure that is pressed into central diaphragm 40 Side faces switches pipe 55, the vertical hole 48 of process to airtight slide plate chamber 15b opening.Therefore, switch the pressure of pipe 55 according to pressure, the pressure of slide plate chamber 15b can switch.In design in the past, pressure switches pipe and is directly pressed into the slide plate chamber that rigidity is low, so have the problem of cylinder deformation.In contrast to this, the present invention can be pressed into pressure switching pipe 55 to be connected in the central diaphragm 40 that rigidity is high, so can solve above-mentioned problem.
Next, in Fig. 5, the pressure that pressure switches pipe 55 is low pressure (Ps), so represent that S pattern is just in operation.At this moment, slide plate 20b, in the time of top dead center, is still in the 15b of slide plate chamber, piston 24b is in the inside idle running of compression chamber 13b.Therefore, the pressure of compression chamber 13b switches to low pressure (Ps), exhaust port 34b(Fig. 6) pass through exhaust valve closure.
Fig. 6 is the state of rest of slide plate 20b.Conventionally, slide plate height (with glide direction be right angle) and poor (gap) of the vane slot height of cylinder be 0.5～0.8/1000 of cylinder thickness (Hb).Such as, Hb=15mm, above-mentioned gap is 7.5～12 μ m.Sealing plate 16, can be the such elastic sheet of Sweden's steel.Slide plate chamber 15b switches to low pressure (Ps), and poor according to the high pressure (Pd) of housing 1, more than being designed to deflection 12 μ m.Its result, due to the distortion of sealing plate 16, slide plate 20b keeps in the 15b of slide plate chamber, S pattern continue.Due to the control of three-way valve, the pressure of slide plate chamber 15b switches to high pressure (Pd), and sealing plate 16 has not just been out of shape, so that slide plate 20b can remove is static, switches to P pattern.
Fig. 7 represents to suck in S pattern flowing of gas.Flow from liquid-storage container 70 to inlet hole 45 low-pressure gas, only flow to slope hole 43a, in compression chamber 13a, compress.Thereafter, pressurized gas can be discharged the bottom from main bearing silencing apparatus 26 to motor 6.The mobile aspect of this suction gas, compression chamber 13a has monopolized the low-pressure gas flowing in inlet hole 45, so the inhaling air scale of construction of compression chamber 13a can increase.Therefore, suction efficiency can improve, and refrigerating capacity can be improved.
Fig. 8 and Fig. 9 are illustrated in refrigerating capacity and COP aspect, and 2 cylinders connect the design and the comparison of the present invention that is connected 1 sucking pipe in central diaphragm 40 in the past of suction pipe.In these figure, left side is the data that in the past designed, and right side is data of the present invention.In addition, take in P pattern in the past the performance of design as 1.00(benchmark), represent the performance of S pattern.In addition, as mentioned above, the words of Ha=Hb=15mm, Hm=20mm, at this moment cylinder inlet hole internal diameter, respectively as 13mm, 18mm.
In Fig. 8, confirm the improvement that refrigerating capacity S pattern of the present invention is 12%, P pattern is 3.6%.In Fig. 9, confirm the improvement that COP of the present invention is 3.6% in S pattern, P pattern is 2.4%.The large reason of improvement of the refrigerating capacity of S pattern is that as mentioned above, compression chamber 13a can monopolize sufficient gettering quantity.But, COP only to 3.6% reason be, along with the increase of gettering quantity, input power has increase.On the other hand, the refrigerating capacity of P pattern and COP improve aspect, and the drag losses (Δ P) that sucks gas can reduce along with the expansion of inlet hole 45.At this, the COP of S pattern improves extremely important, and the annual operation ratio aspect of air conditioner, so the words that the COP improvement APF of about 3 times 3.6% that S pattern is P pattern evaluates can improve more than 10%.
During above-mentioned technology discloses, between central diaphragm 40 and main bearing 25, configured cylinder A10a, between central diaphragm 40 and supplementary bearing 30, configured between cylinder B10b, in contrast central diaphragm 40 and main bearing 25, configure cylinder B10b, between central diaphragm 40 and supplementary bearing 30, to configure cylinder A10a also passable.
In addition, a side in 2 cylinders, it is the swing rotary compressor structure of slide plate of piston and slide plate one, the opposing party's cylinder is the slide plate reciprocating motion type rotary compressor structure that piston separates with slide plate, and the compression of this compression chamber is controlled and also can be reached effect of the present invention.In addition, above-mentioned technology discloses, and is to describe with the vertical rotating formula compressor of eccentric shaft above-below direction configuration, but will in the horizontal rotary compressor of eccentric shaft substantially horizontal configuration, also can applies.
Applying capacity controlled rotary compressor of raising the efficiency technology of the present invention can adopt widely on domestic air conditioning, business air conditioner or water heater, refrigeration plant.
The present invention is having in the rotary compressor of 2 cylinder compression chambers, is in operation and makes a side compression chamber cylinder deactivation or remove cylinder deactivation to make the variable volume controlled type rotary compressor of refrigerating capacity relevant.In addition, the present invention, as shown in [patent documentation 2] and [Patent Document 3], has adopted " slide plate cavity pressure switching mode " that the slide plate cavity pressure sealing is switched between high pressure and low pressure.Feature of the present invention is: the suction port, the main purpose that in the central diaphragm possessing in the middle of 2 cylinders, have configured an internal diameter expansion are to improve gettering efficiency, thereby improve compressor efficiency.
Twin-tub volume controlled type rotary compressor of the present invention can be applied in air conditioner, refrigerating equipment, water heater etc., can use various refrigerants.In addition, except constant-seed motor, also can be mounted in the scope that expands refrigerating capacity control on variable-frequency type motor.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of indications such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiments in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiments that describe in this specification or example and different embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (7)
1. a volume controlled type rotary compressor, is characterized in that, comprising:
Seal casinghousing;
Electrodynamic machine, described electrodynamic machine is located in described seal casinghousing;
Rotary compressor structure, described rotary compressor structure is located in described seal casinghousing and is connected with described electrodynamic machine, and described rotary compressor structure comprises: the first cylinder and second cylinder separately with the first compression chamber and the second compression chamber; Be located at the central diaphragm between described the first cylinder and the second cylinder, and in described central diaphragm, there is the suction port to described the first compression chamber and described the second compression chamber opening; The first piston and the second piston that in described the first compression chamber and described the second compression chamber, revolve round the sun respectively; Along with the revolution separately of these first pistons and the second piston can be carried out the first slide plate and second slide plate of reciprocal action, and in described the second cylinder, there is the second slide plate chamber at the back of having received described the second slide plate; Make the pressure in the described second slide plate chamber of sealing switch the pressure switcher so that the compression of described the second cylinder is stopped or removing to stop between 2 different pressure, wherein central diaphragm is connected with sucking pipe; The thickness of described central diaphragm is that the thickness of Hm, described the first cylinder is that the thickness of Ha, described the second cylinder is that Hb meets following relation:
Hm
3＞Ha
3+Hb
3。
2. volume controlled type rotary compressor according to claim 1, is characterized in that, the thickness of the thickness of described the first cylinder and described the second cylinder equates.
3. volume controlled type rotary compressor according to claim 1, is characterized in that, described pressure switcher is communicated with described the second slide plate chamber by described central diaphragm.
4. volume controlled type rotary compressor according to claim 1, is characterized in that, the open part in described the second slide plate chamber connects deformable sealing plate with described the second slide plate is remained in described the second slide plate chamber.
5. volume controlled type rotary compressor according to claim 4, is characterized in that, described sealing plate deflection be more than 12 μ m.
6. volume controlled type rotary compressor according to claim 1, is characterized in that, described pressure switcher is three-way valve or four-way valve.
7. a refrigerating circulatory device, comprises according to the volume controlled type rotary compressor described in any one in claim 1-6.
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| CN201410046931.5A CN103821719B (en) | 2014-02-10 | 2014-02-10 | Volume control type rotary compressor and there is its refrigerating circulatory device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015117281A1 (en) * | 2014-02-10 | 2015-08-13 | 广东美芝制冷设备有限公司 | Volume control-type rotary compressor and refrigeration circulation apparatus having same |
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| CN103821719B (en) | 2016-11-16 |
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