CN203756524U - Double-level rotating compressor and refrigerating cycling device with same - Google Patents
Double-level rotating compressor and refrigerating cycling device with same Download PDFInfo
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- CN203756524U CN203756524U CN201420093723.6U CN201420093723U CN203756524U CN 203756524 U CN203756524 U CN 203756524U CN 201420093723 U CN201420093723 U CN 201420093723U CN 203756524 U CN203756524 U CN 203756524U
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Abstract
The utility model discloses a double-level rotating compressor and a refrigerating cycling device with the same. The double-level rotating compressor comprises an air spraying pipe, a shell, two air cylinders, a piston and a sliding piece, wherein the shell is externally provided with a liquid storing device and is internally provided with an air spraying cavity, and the air spraying cavity is connected with the liquid storing device and the air spraying pipe respectively; the two air cylinders are both arranged in the shell and are separated from each other in a vertical direction, one of the two air cylinders is communicated with the air spraying cavity, the other air cylinder is communicated with the liquid storing device and is provided with a sliding piece groove extending in the radial direction, and a compressing cavity, and an exhaust hole of the compressing cavity is communicated with the air spraying cavity; the piston is arranged in the compressing cavity and can roll along the inner wall of the compressing cavity, the sliding piece is movably arranged in the sliding piece groove, a backpressure chamber is defined by the outer end of the sliding piece and the inner wall of the sliding piece groove together, and is communicated with the air spraying cavity, when the air spraying cavity is communicated with the liquid storing device, the sliding piece is arranged in the sliding piece groove, and when the air spraying cavity is communicated with the air spraying pipe, the inner end of the sliding piece props against the piston. According to the double-level rotating compressor provided by the utility model, the property is good, and the reliability is high.
Description
Technical field
The utility model relates to appliance field, especially relates to a kind of twin-stage rotary compressor and has its refrigerating circulatory device.
Background technique
In correlation technique, point out, refrigerating circulatory device for example air conditioning load large in, as ultralow temperature heats, because the specific volume of refrigeration agent is large, compressor air suction mass flow rate reduces, except causing compressor heating capacity significantly to reduce, meanwhile, because mass flow rate reduces, oil return difficulty, the heat that refrigeration agent is taken away reduces, and easily cause compressor pump wearing and tearing and motor reliability decrease, and system energy efficiency is low.
Model utility content
The utility model is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, an object of the present utility model is to propose a kind of twin-stage rotary compressor, and the performance of described twin-stage rotary compressor under various ambient temperatures makes moderate progress, and reliability is high.
Another object of the present utility model is to propose a kind of refrigerating circulatory device with above-mentioned twin-stage rotary compressor.
Twin-stage rotary compressor according to the utility model first aspect embodiment, comprising: air jet pipe; Housing, described housing is provided with liquid-storage container outward, has jet chamber in described housing, and described jet chamber is connected with described air jet pipe with described liquid-storage container respectively; Two cylinders, described two cylinders are all located in described housing and on vertical and are spaced apart from each other, one of them in described two cylinders is communicated with described jet chamber, another is communicated with described liquid-storage container and have vane slot and the compression chamber radially extending, and the relief opening of described compression chamber is communicated with described jet chamber; Piston, described piston is located in described compression chamber and can rolls along the inwall of described compression chamber; And slide plate, described slide plate is located in described vane slot movably and the inwall of outer end and described vane slot limits back pressure chamber jointly, described back pressure chamber is communicated with described jet chamber, and wherein said slide plate is configured to be accommodated in when described jet chamber is communicated with described liquid-storage container in described vane slot, described jet chamber inner stopping to described piston while being communicated with described air jet pipe.
According to the utility model embodiment's twin-stage rotary compressor, at refrigerating circulatory device air conditioning load when greatly for example ultralow temperature heats for example, adopt the jet compression of twin-stage, can effectively increase gas mass flow, improve refrigerating circulatory device heating capacity and efficiency, and it is lubricated to improve the pump housing, when ordinary temp operating mode refrigerating operaton, adopt single stage compression, can improve efficiency and the efficiency of refrigerating circulatory device.
In addition, according to the twin-stage rotary compressor of the utility model above-described embodiment, can also there is following additional technical characteristics:
Alternatively, in described two cylinders, more Next bottom is provided with bearing, and the bottom of described bearing is provided with cover plate, and described cover plate and described bearing limit described jet chamber jointly.
Or alternatively, between described two cylinders, be provided with isolation mounting, in described isolation mounting, limit described jet chamber.
Particularly, described isolation mounting comprises: slider, the top of described slider and/or bottom-open; And isolating plate, described isolating plate is located at top and/or the bottom of described slider and jointly limits described jet chamber with described slider.
Alternatively, described jet chamber is connected with described air jet pipe with described liquid-storage container by three-way valve.
Further, described jet chamber has the intakeport being connected with described three-way valve, and described back pressure chamber communicates with described intakeport.
Alternatively, the discharge volume of described one of them cylinder is V1, and the discharge volume of described another cylinder is V2, wherein V1/V2=0.45～0.95.
Alternatively, the height of described one of them cylinder is less than the height of described another cylinder, in described housing, be provided with bent axle, described bent axle is provided with isolated two eccentric parts vertically, the lower end of described bent axle is stretched in described two cylinders, and described two eccentric parts are positioned at respectively described two cylinders, the offset of the described eccentric part in described one of them cylinder is more than or equal to the offset of the described eccentric part of described another cylinder.
Refrigerating circulatory device according to the utility model second aspect embodiment, comprising: vaporizer; Condenser, described condenser is connected with described vaporizer; Throttling arrangement, described throttling arrangement is located between described vaporizer and described condenser; Flash vessel, described flash vessel is located between described throttling arrangement and described condenser; And according to the twin-stage rotary compressor of the above-mentioned first aspect of the utility model, on described twin-stage rotary compressor, there is gas returning port and air outlet, described vaporizer, described condenser are communicated with described gas returning port, described air outlet respectively by four-way valve, and described flash vessel is connected with described air jet pipe.
According to the utility model embodiment's refrigerating circulatory device, by above-mentioned first aspect embodiment's twin-stage rotary compressor is set, at load hour, the operation of selection single-stage, when load is large, employing twin-stage moves, thereby has effectively improved overall performance, reliability and the efficiency of refrigerating circulatory device.
Further, between described condenser and described flash vessel, be provided with control valve, described refrigerating circulatory device further comprises: bypass valve, described bypass valve is in parallel with described control valve and described flash vessel.
Further, described refrigerating circulatory device also comprises: first throttle device and the first control valve, described first throttle device and described the first control valve are located at respectively between described control valve and described flash vessel, described flash vessel and described throttling arrangement, and described control valve, described first throttle device and described flash vessel are in parallel with described bypass valve.
Alternatively, described throttling arrangement is capillary tube or expansion valve.
Further, between described gas returning port and described air jet pipe, be provided with the second control valve.
Alternatively, described refrigerating circulatory device is air-conditioning.
Further, described refrigerating circulatory device further comprises: water tank, described water tank be connected with described vaporizer with described vaporizer heat exchange.
Alternatively, described refrigerating circulatory device is heat pump water heater.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the utility model embodiment's twin-stage rotary compressor;
Fig. 2 is the schematic diagram of the compression set of the twin-stage rotary compressor shown in Fig. 1;
Fig. 3 is the plan view of the compression set shown in Fig. 2;
Fig. 4 is the sectional drawing along A-A line in Fig. 3;
Fig. 5 is the side view of the compression set shown in Fig. 1;
Fig. 6 is the sectional drawing along B-B line in Fig. 5;
Fig. 7 is according to the schematic diagram of another embodiment's of the utility model compression set;
Fig. 8 is according to the schematic diagram in refrigerating circulatory device when refrigeration of the utility model embodiment;
Fig. 9 is the schematic diagram of the refrigerating circulatory device shown in Fig. 8 while heating;
Schematic diagram when Figure 10 is the refrigerating circulatory device defrosting shown in Fig. 8;
Figure 11 is according to the schematic diagram in refrigerating circulatory device when defrosting of another embodiment of the utility model.
Reference character:
100: twin-stage rotary compressor;
1: air jet pipe; 2: housing; 21: air outlet;
3: liquid-storage container; 31: low pressure air suction pipe; 32: the first sucking pipes; 33: gas returning port;
4: motor; 41: stator; 42: rotor; 5: three-way valve;
6: compression set;
61: main bearing; 62: the first cylinders; 621: the first compression chambers;
622: first piston; 623: the first slide plates; 624: spring;
63: dividing plate; 631: slider; 632: isolating plate;
64: the second cylinders; 641: the second compression chambers; 642: the second pistons;
643: the second slide plates; 644: back pressure chamber;
65: supplementary bearing; 651: jet chamber; 652: intakeport; 653: the second sucking pipes;
6541: first passage; 6542: second channel; 6543: third channel;
66: cover plate; 67: bent axle; 671: the first eccentric parts; 672: the second eccentric parts;
200: refrigerating circulatory device;
201: vaporizer; 202: condenser; 203: throttling arrangement;
204: flash vessel; 2041: the second control valves;
205: bypass valve; 206: four-way valve; 207: control valve;
208: first throttle device; 209: the first control valves.
Embodiment
Describe embodiment of the present utility model 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.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Can be for refrigerating circulatory device for example in air-conditioning according to the utility model first aspect embodiment's twin-stage rotary compressor 100.In description below the application, take twin-stage rotary compressor 100 in air-conditioning as example describes.Certainly, those skilled in the art understand, can also be in heat pump water heater etc. according to twin-stage rotary compressor 100 of the present utility model.
As Figure 1-Figure 4, according to the utility model first aspect embodiment's twin-stage rotary compressor 100, comprise air jet pipe 1, housing 2, two cylinders, piston and slide plates.
Housing 2 is outer is provided with liquid-storage container 3, has jet chamber 651 in housing 2.For example, in the example of Fig. 1, liquid-storage container 3 can be fixed on the sidewall of housing 2, in housing 2, limit accommodating chamber, the top of accommodating chamber has motor 4, motor 4 comprises annular stator 41 and rotor 42, stator 41 is fixed on the inwall of housing 2, rotor 42 is located in stator 41 rotationally, the bottom of accommodating chamber has compression set 6, motor 4 drive compression device 6 pressurized gass, in compression set 6, limit jet chamber 651, jet chamber 651 is connected with air jet pipe 1 with liquid-storage container 3 respectively, to pass into the gas that pressure does not wait respectively in jet chamber 651.
Compression set 6 comprises two cylinders, two pistons, two slide plates, two bearings, dividing plate 63 and bent axles 67.For convenience of description, in description below the application, two cylinders, two pistons, two slide plates, two bearings are divided into respectively to the first cylinder 62, the second cylinder 64, first piston 622, the second piston 642, the first slide plate 623, the second slide plate 643, main bearing 61 and supplementary bearing 65.
Wherein, the first cylinder 62 and the second cylinder 64 are all unlimited tubulars of top and bottom, the first cylinder 62 and the second cylinder 64 are spaced from each other on above-below direction, and the first cylinder 62 is positioned at the top of the second cylinder 64, on the first cylinder 62 and the second cylinder 64, be formed with respectively the first vane slot and the second vane slot that radially extend, the first slide plate 623 and the second slide plate 643 are contained in respectively the first vane slot and the second vane slot is interior and removable in inward-outward direction, the outer end of the first slide plate 623 is connected with spring, under the elastic force effect of spring, can contact so that the inner of the first slide plate 623 remains with the periphery wall of first piston 622, dividing plate 63 is located between the first cylinder 62 and the second cylinder 64, main bearing 61 is located at the top of the first cylinder 62, supplementary bearing 65 is located at the bottom of the second cylinder 64, thereby main bearing 61, the first cylinder 62 and dividing plate 63 limit the first compression chamber 621 jointly, dividing plate 63, the second cylinder 64 and supplementary bearing 65 limit the second compression chamber 641 jointly, the upper end of bent axle 67 is connected with the rotor 42 of motor 4 and is driven and rotated by rotor 42, the lower end of bent axle 67 successively through main bearing 61 and dividing plate 63 and stretch into the first compression chamber 621 and the second compression chamber 641 in, bent axle 67 is provided with the first eccentric part 671 and the second eccentric part 672 being axially spaced apart from each other along it, first piston 622 and the second piston 642 are set in respectively on the first eccentric part 671 and the second eccentric part 672 and can roll along the inwall of the first compression chamber 621 and the second compression chamber 641.Here, it should be noted that, direction " interior " can be understood as the direction towards the first cylinder 62 or the second cylinder 64 centers, and its opposite direction is defined as " outward ", away from the direction at the first cylinder 62 or the second cylinder 64 centers.
Two cylinders (i.e. the first cylinder 62 and the second cylinder 64) be all located in housing 2 and vertical (for example, above-below direction in Fig. 1) on, be spaced apart from each other, one of them in two cylinders (for example, the first cylinder 62 in Fig. 1) be communicated with jet chamber 651, particularly, jet chamber 651 is communicated with the suction port of the first compression chamber 621 of the first cylinder 62, thereby the gas in jet chamber 651 is passed in the first compression chamber 621 and compressed.
Another in two cylinders (for example, the second cylinder 64 in Fig. 1) be communicated with liquid-storage container 3, particularly, the bottom of the second compression chamber 641 of the second cylinder 64 by the first sucking pipe 32 and liquid-storage container 3 passes to mutually gas to be compressed passed in the second compression chamber 641 and compressed, and above-mentioned another cylinder (for example, the second cylinder 64 in Fig. 1) there is vane slot (i.e. the second vane slot) and the compression chamber (i.e. the second compression chamber 641) radially extending, the relief opening of compression chamber (i.e. the second compression chamber 641) is communicated with jet chamber 651, piston (i.e. the second piston 642) is located in compression chamber (i.e. the second compression chamber 641) and can rolls along the inwall of compression chamber (i.e. the second compression chamber 641), when the second cylinder 64 compression work, gas after the interior compression of the second compression chamber 641 can enter jet chamber 651 by relief opening, jet chamber 651 passes into compression again in the first compression chamber 621 by the gas in it.
Slide plate (for example, the second slide plate 643 in Fig. 1 and Fig. 4) be located at movably in vane slot (i.e. the second vane slot), and the outer end of slide plate (i.e. the second slide plate 643) and the inwall of vane slot (i.e. the second vane slot) limit back pressure chamber 644 jointly, back pressure chamber 644 is communicated with jet chamber 651, wherein slide plate (i.e. the second slide plate 643) is configured to be accommodated in vane slot (the second vane slot) when jet chamber 651 is communicated with liquid-storage container 3, for example, air-conditioning is under cooling condition, the gas that now enters into jet chamber 651 and the second cylinder 64 is all low-pressure gas, the pressure at the second slide plate 643 inside and outside two ends equates, the pressure in the second compression chamber 641 and back pressure chamber 644 equates, the inner of the second slide plate 643 is supported the second piston 642 incessantly, therefore, the second cylinder 64 unloadings, the air-breathing low-pressure gas from jet chamber 651 of the first cylinder 62, carry out single stage compression.
When jet chamber 651 is communicated with air jet pipe 1, piston (the second piston 642) is only supported in the inner of the second slide plate 643.For example, air-conditioning is when worst cold case, the second cylinder 64 sucks the low-pressure gas from vaporizer 201 outlets of air-conditioning, the medium pressure gas that jet chamber 651 sucks from the flash vessel 204 of air-conditioning, now the pressure at the inside and outside two ends of the second slide plate 643 is not etc., in the second compression chamber 641, be the low-pressure gas that pressure is lower, in back pressure chamber 644, it is the medium pressure gas that pressure is higher, the second slide plate 643 is inner second piston 642 that only supports under the effect of pressure reduction, the second cylinder 64 loads, after the second cylinder 64 compressions, the gas in jet chamber 651 is gas after the second cylinder 64 compression and from the mixed gas of the medium pressure gas of flash vessel 204, the first cylinder 62 sucks after medium pressure gas, compress for the second time, by gas compression to the holding space that is discharged to housing 2 after high pressure, thereby realize Two-stage Compression.
Thus, by adopting the air pressure in jet chamber 651, control the second slide plate 643, during single-stage operation, air pressure in jet chamber 651 is low pressure, equate with the pressure in the second cylinder 64,, to the second slide plate 643 pressure releases, the second slide plate 643 is failure to actuate, thereby can reduce 100 abrasion of twin-stage rotary compressor, improve twin-stage rotary compressor 100 efficiencies.During twin-stage operation; air pressure in jet chamber 651 is middle pressure; thereby the air pressure in back pressure chamber 644 is middle pressure; with the high pressure phase ratio in housing 2, outside compression set 6; the pressure reduction at the second slide plate 643 inside and outside two ends reduces, thereby has reduced the wearing and tearing of the second slide plate 643, has effectively protected the second slide plate 643; and then reduce the abrasion of twin-stage rotary compressor 100, the working life of having improved twin-stage rotary compressor 100.
According to the utility model embodiment's twin-stage rotary compressor 100, at refrigerating circulatory device 200 air conditioning load when greatly for example ultralow temperature heats for example, adopt the jet compression of twin-stage, can effectively increase gas mass flow, improve refrigerating circulatory device 200 heating capacities and efficiency, and it is lubricated to improve the pump housing, when ordinary temp operating mode refrigerating operaton, adopt single stage compression, can improve efficiency and the efficiency of refrigerating circulatory device 200.
In an embodiment of the present utility model, as depicted in figs. 1 and 2, in two cylinders more next (for example, the second cylinder 64 in Fig. 1 and Fig. 2) bottom (is for example provided with bearing, supplementary bearing 65 in Fig. 1 and Fig. 2), the bottom of bearing (being supplementary bearing 65) is provided with cover plate 66, and cover plate 66 limits jet chamber 651 jointly with bearing (being supplementary bearing 65).Thus, easy for installation, efficiency of assembling is high and cost is low.
Certainly, the utility model is not limited to this, in other embodiments of the present utility model, with reference to Fig. 7, between two cylinders, is provided with isolation mounting, limits jet chamber 651 in isolation mounting.Particularly, isolation mounting comprises: slider 631 and isolating plate 632, the top of slider 631 and/or bottom-open.Isolating plate 632 is located at top and/or the bottom of slider 631 and jointly limits jet chamber 651 with slider 631.
For example, in the example of Fig. 7, isolation mounting is kept apart the first cylinder 62 and the second cylinder 64, isolation mounting comprises a slider 631 and an isolating plate 632, the bottom-open of slider 631, isolating plate 632 is located at the bottom of slider 631 and jointly limits jet chamber 651 with slider 631, now the upper surface of slider 631 contacts with the lower surface of the first cylinder 62, and the lower surface of isolating plate 632 contacts with the upper surface of the second cylinder 64.Certainly, in another example of the present utility model, isolating plate 632 can also be located at the top of slider 631 to limit jet chamber 651 with slider 631, and wherein (scheming not shown) opened wide at the top of slider 631.In some examples more of the present utility model, the top of slider 631 and bottom are all opened wide, and the top of slider 631 and bottom can be respectively equipped with 632, two isolating plates 632 of an isolating plate and slider 631 jointly to limit jet chamber 651(figure not shown).
In an embodiment of the present utility model, jet chamber 651 is connected with air jet pipe 1 with liquid-storage container 3 by three-way valve 5, as shown in Figure 1, outer second sucking pipe 653 that is provided with of housing 2, the second sucking pipe 653 remains and is communicated with jet chamber 651, the second sucking pipe 653 is connected with low pressure air suction pipe 31, the air jet pipe 1 of liquid-storage container 3 bottoms by three-way valve 5, when air conditioner refrigerating, three-way valve 5 is controlled the second sucking pipe 653 and is communicated with low pressure air suction pipe 31, when air-conditioning heating, three-way valve 5 is controlled the second sucking pipe 653 and is communicated with air jet pipe 1.Thus, by three-way valve 5 is set, according to operating mode, can automatically switch and flow into the refrigeration agent in above-mentioned jet chamber 651, be from refrigeration agent out of flash vessel 204 or carry out from evaporator drier 201 refrigeration agent out; When air-conditioning moves under low-load, three-way valve 5 is controlled jet chamber 651 and is sucked from evaporator drier 201 refrigeration agent out, makes the second cylinder 64 unloadings of above-mentioned twin-stage rotary compressor 100, the first cylinder 62 pressurized gass; When air-conditioning moves under heating condition, three-way valve 5 is controlled jet chamber 651 and is sucked from flash vessel 204 refrigeration agent out, makes above-mentioned twin-stage rotary compressor 100 twin-stage operations.
Further, jet chamber 651 has the intakeport 652 being connected with three-way valve 5, and back pressure chamber 644 communicates with intakeport 652.With reference to Fig. 5 and Fig. 6, intakeport 652 is corresponding with the second sucking pipe 653, one end of the second sucking pipe 653 stretch in intakeport 652 and with the internal communication in jet chamber 651, back pressure chamber 644 is communicated with intakeport 652 by air-flow path as shwon in Figures 5 and 6, particularly, air-flow path comprises first passage 6541, second channel 6542 and third channel 6543, first passage 6541 vertically extends, and the lower end of first passage 6541 communicates with intakeport 652, second channel 6542 along continuous straight runs extend, one end of second channel 6542 is communicated with the upper end of first passage 6541, alternatively, second channel 6542 is recessed into and forms downwards by the upper-end surface of supplementary bearing 65, third channel 6543 vertically extends, and the lower end of third channel 6543 is communicated with the other end of second channel 6542, the upper end of third channel 6543 is communicated with back pressure chamber 644, because the first cylinder 62 is air-breathing, may cause 651 pressure surges of jet chamber, likely when Two-stage Compression, cause the second slide plate 643 back pressures not enough, by being set, back pressure chamber 644 is directly communicated with intakeport 652, be conducive to stablize the back pressure of the second slide plate 643, guarantee the action of the second slide plate 643.
Alternatively, the discharge volume of one of them cylinder (for example, the first cylinder 62 in Fig. 1) is V1, and the discharge volume of another cylinder (for example, the second cylinder 64 in Fig. 1) is V2, wherein, and V1/V2=0.45～0.95.Here, it should be noted that, " discharge volume " can be understood as the volume of the pressurized gas of the relief opening discharge from the first cylinder 62 or the second cylinder 64.For different areas and service condition, the difference of V1/V2 ratio will be brought different efficiencies, and when the temperature difference large (as heat pump working condition) of evaporation and condensation, V1/V2 can get smaller value; In above-mentioned both temperature difference hour, higher value can be got, like this for different regions and different service conditions, twin-stage rotary compressor 100 efficiencies can be improved.
Alternatively, one of them cylinder (for example, the first cylinder 62 in Fig. 1) height (is for example less than another cylinder, the second cylinder 64 in Fig. 1) height, in housing 2, be provided with bent axle 67, bent axle 67 is provided with isolated two eccentric parts (i.e. the first eccentric part 671 and the second eccentric part 672) vertically, the lower end of bent axle 67 is stretched in two cylinders, and two eccentric parts are positioned at respectively two cylinders (i.e. the first cylinder 62 and the second cylinder 64), one of them cylinder (for example, it is interior (for example that the offset of the eccentric part the first cylinder 62 in Fig. 1) is more than or equal to another cylinder, the offset of eccentric part the second cylinder 64 in Fig. 1).The refrigerants such as R22, R410A that use at present, the pressure range of its operation has determined that its low pressure stage pressure reduction is little, high pressure stage pressure reduction is large, the further flattening of the first cylinder 62 can improve the efficiency of twin-stage rotary compressor 100, in addition, also make the structure of twin-stage rotary compressor 100 more compact, be conducive to improve the reliability of reliability, particularly bearing and axle.
As shown in Fig. 8-Figure 11, according to the utility model second aspect embodiment's refrigerating circulatory device 200, comprise vaporizer 201, condenser 202, throttling arrangement 203, flash vessel 204 and according to the above-mentioned first aspect embodiment's of the utility model twin-stage rotary compressor 100.
Condenser 202 is connected with vaporizer 201.Throttling arrangement 203 is located between vaporizer 201 and condenser 202.Flash vessel 204 is located between throttling arrangement 203 and condenser 202.On twin-stage rotary compressor 100, have gas returning port 33 and air outlet 21, vaporizer 201, condenser 202 are communicated with gas returning port 33, air outlet 21 respectively by four-way valve 206, and flash vessel 204 is connected with air jet pipe 1.Further, between condenser 202 and flash vessel 204, can be provided with control valve 207, refrigerating circulatory device 200 further comprises: bypass valve 205, bypass valve 205 is in parallel with control valve 207 and flash vessel 204.Wherein, at refrigerating circulatory device 200 when for example air-conditioning moves under low-load, bypass valve 205 makes the above-mentioned condenser 202 gas out flash vessel 204 of not flowing through, and by bypass to throttling arrangement 203.Alternatively, as shown in Fig. 1, Fig. 8-Figure 11, gas returning port 33 is located at the top of liquid-storage container 3, and air outlet 21 is located at the top of housing 2.
When refrigerating circulatory device 200 is air-conditioning, when air conditioner refrigerating is worked, as shown in Figure 8, control valve 207 is closed, bypass valve 205 is opened, the refrigeration agent of the High Temperature High Pressure out of the air outlet 21 by housing 2 enters condenser 202, the refrigeration agent of High Temperature High Pressure is by liquefy refrigeration agent after the condensation process of condenser 202, liquid refrigerant is flowed through after bypass valve 205 through throttling arrangement 203 step-downs, become low-pressure, liquid refrigerant, refrigeration agent after throttling enters vaporizer 201, refrigeration agent carries out evaporation and heat-exchange and becomes gas in vaporizer 201, gas refrigerant enters in housing 2 by gas returning port 33.
When air-conditioning heating is worked, as shown in Figure 9, control valve 207 is opened, bypass valve 205 cuts out, first relief opening by housing 2 high-temperature high-pressure gas refrigerant out enters vaporizer 201, after condensation process by vaporizer 201, became cold high pressure liquid refrigerant, liquid refrigerant is through throttling arrangement 203 step-downs, become low-pressure, liquid refrigerant, alternatively, throttling arrangement 203 is capillary tube or expansion valve, refrigeration agent after throttling enters flash vessel 204 and carries out gas-liquid separation, gaseous coolant directly flows to gas returning port 33, pure liquid refrigerant enters condenser 202, refrigeration agent carries out by gas returning port 33, entering in housing 2 after evaporation process in condenser 202.
According to the utility model embodiment's refrigerating circulatory device 200 air-conditioning for example, by above-mentioned first aspect embodiment's twin-stage rotary compressor 100 is set, at load hour, the operation of selection single-stage, when load is large, employing twin-stage moves, thereby has effectively improved overall performance, reliability and the efficiency of refrigerating circulatory device 200.
In an embodiment of the present utility model, with reference to Fig. 8-Figure 11, refrigerating circulatory device 200 also comprises: first throttle device 208 and the first control valve 209, first throttle device 208 and the first control valve 209 are located at respectively between control valve 207 and flash vessel 204, flash vessel 204 and throttling arrangement 203, and control valve 207, first throttle device 208 and flash vessel 204 (the first control valve 209) are in parallel with bypass valve 205.
As shown in Figure 8, control valve 207 and the first control valve 209 are closed (the first control valve 209 also can be not related to), bypass valve 205 is opened, high-pressure refrigerant after 100 compressions of twin-stage rotary compressor flows to condenser 202 through four-way valve 206, again through bypass valve 205 throttling arrangement 203 of flowing through, refrigeration agent after the throttling expansion vaporizer 201 of flowing through, after vaporizer 201 heat absorptions, turns back to twin-stage rotary compressor 100.Now, three-way valve 5 is controlled jet chamber 651 and is communicated with low pressure air suction pipe 31, and the second cylinder 64 pressures of inspiration(Pi) are consistent with jet chamber 651 pressures of inspiration(Pi), and what back pressure cavity passed into is low pressure, and the second slide plate 643 is failure to actuate.The first cylinder 62 sucks low pressure refrigerant and compresses, and realizes single stage compression.During refrigeration cycle, adopt this loop, can reduce pipe arrangement and element that refrigerant is flowed through, reduce system flow drag losses, improve system energy efficiency.
As shown in Figure 9, bypass valve 205 cuts out, control valve 207 and the first control valve 209 are opened, high-pressure refrigerant after 100 compressions of twin-stage rotary compressor flows to vaporizer 201 through four-way valve 206, by vaporizer 201 refrigeration agent out, after throttling arrangement 203 throttling expansions, flow into flash vessel 204, gas-liquid two-phase refrigeration agent at flash vessel 204 shwoots is divided into two-way: the refrigerant liquid of main road enters condenser 202 after 208 throttling expansions of first throttle device, in condenser 202, carry out becoming refrigerant gas after heat exchange, flowing into twin-stage rotary compressor 100 compresses again, the refrigerant gas of secondary circuit from flash vessel 204 out, enters jet loop, thereby flows into twin-stage rotary compressor 100.Now, three-way valve 5 is controlled jet chamber 651 and is communicated with air jet pipe 1, and the exhaust pressure that enters jet chamber 651, the second cylinders 64 from flash vessel 204 medium pressure gas is out medium pressure gas pressure, and twin-stage rotary compressor 100 carries out two stage compression circulation.
In addition, refrigerating circulatory device 200 further comprises: water tank (scheming not shown), water tank be connected with vaporizer 201 with vaporizer 201 heat exchange.Alternatively, refrigerating circulatory device 200 is heat pump water heater.When refrigerating circulatory device 200 is heat pump water heater, vaporizer 201 carries out heat exchange with water tank, and systemic circulation and above-mentioned refrigeration, to heat process consistent.While heating, pressure reduction pressure ratio is larger, particularly, under low-temperature heating and heat pump working condition, adopts two stage compression circulation, can effectively improve system heating capacity, and elevator system efficiency.
As shown in figure 10, during defrosting, bypass valve 205 and the first control valve 209 are closed, high-pressure refrigerant after 100 compressions of twin-stage rotary compressor flows to condenser 202 through four-way valve 206, by condenser 202 refrigeration agent out through first throttle device 208, low pressure refrigerant after expansion flows into flash vessel 204, from flash vessel 204 refrigeration agent out, by tonifying Qi loop, enters twin-stage rotary compressor 100.Now, the three-way valve 5 jet chambeies 651 of control are communicated with air jet pipe 1.
Further, between gas returning port 33 and air jet pipe 1, be provided with the second control valve 2041.Particularly, be communicated with air jet pipe 1 and low pressure air suction pipe 31, and between the second control valve 2041 is set, when only moving under defrosting mode, opens the second control valve 2041, when other pattern actions, close, during defrosting, low-temperature refrigerant enters jet chamber 651 and second cylinder 64 of twin-stage rotary compressor 100 through jet loop, can effectively avoid the second cylinder 64 may occur the situation of intake negative-pressure when Defrost operation.When defrosting, high low pressure pressure reduction is little, and pressure ratio is little, if adopt two stage compression, easily causes overcompression, causes power consumption to rise, and adopts this loop, can effectively avoid the generation of this situation.
In description of the present utility model, it will be appreciated that, term " " center ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " 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 utility model and simplified characterization for convenience of description, 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 restriction of the present utility model.
In addition, term " first ", " second ", " the 3rd " 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 ", " the 3rd ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the utility model, 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 be integral; Can be mechanical connection, can be to be also electrically connected to; 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 the concrete meaning of above-mentioned term in the utility model.
In the utility model, 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.
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 utility model 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, the specific features of description, structure, material or feature 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 embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (16)
1. a twin-stage rotary compressor, is characterized in that, comprising:
Air jet pipe;
Housing, described housing is provided with liquid-storage container outward, has jet chamber in described housing, and described jet chamber is connected with described air jet pipe with described liquid-storage container respectively;
Two cylinders, described two cylinders are all located in described housing and on vertical and are spaced apart from each other, one of them in described two cylinders is communicated with described jet chamber, another is communicated with described liquid-storage container and have vane slot and the compression chamber radially extending, and the relief opening of described compression chamber is communicated with described jet chamber;
Piston, described piston is located in described compression chamber and can rolls along the inwall of described compression chamber; And
Slide plate, described slide plate is located in described vane slot movably and the inwall of outer end and described vane slot limits back pressure chamber jointly, described back pressure chamber is communicated with described jet chamber, and wherein said slide plate is configured to be accommodated in when described jet chamber is communicated with described liquid-storage container in described vane slot, described jet chamber inner stopping to described piston while being communicated with described air jet pipe.
2. twin-stage rotary compressor according to claim 1, is characterized in that, in described two cylinders, more Next bottom is provided with bearing, and the bottom of described bearing is provided with cover plate, and described cover plate and described bearing limit described jet chamber jointly.
3. twin-stage rotary compressor according to claim 1, is characterized in that, between described two cylinders, is provided with isolation mounting, limits described jet chamber in described isolation mounting.
4. twin-stage rotary compressor according to claim 3, is characterized in that, described isolation mounting comprises:
Slider, the top of described slider and/or bottom-open; With
Isolating plate, described isolating plate is located at top and/or the bottom of described slider and jointly limits described jet chamber with described slider.
5. twin-stage rotary compressor according to claim 1, is characterized in that, described jet chamber is connected with described air jet pipe with described liquid-storage container by three-way valve.
6. twin-stage rotary compressor according to claim 5, is characterized in that, described jet chamber has the intakeport being connected with described three-way valve, and described back pressure chamber communicates with described intakeport.
7. according to the twin-stage rotary compressor described in any one in claim 1-6, it is characterized in that, the discharge volume of described one of them cylinder is V1, and the discharge volume of described another cylinder is V2,
V1/V2=0.45～0.95 wherein.
8. according to the twin-stage rotary compressor described in any one in claim 1-6, it is characterized in that, the height of described one of them cylinder is less than the height of described another cylinder,
In described housing, be provided with bent axle, described bent axle is provided with isolated two eccentric parts vertically, the lower end of described bent axle is stretched in described two cylinders, and described two eccentric parts are positioned at respectively described two cylinders, the offset of the described eccentric part in described one of them cylinder is more than or equal to the offset of the described eccentric part in described another cylinder.
9. a refrigerating circulatory device, is characterized in that, comprising:
Vaporizer;
Condenser, described condenser is connected with described vaporizer;
Throttling arrangement, described throttling arrangement is located between described vaporizer and described condenser;
Flash vessel, described flash vessel is located between described throttling arrangement and described condenser; And
According to the twin-stage rotary compressor described in any one in claim 1-8, on described twin-stage rotary compressor, there is gas returning port and air outlet, described vaporizer, described condenser are communicated with described gas returning port, described air outlet respectively by four-way valve, and described flash vessel is connected with described air jet pipe.
10. refrigerating circulatory device according to claim 9, is characterized in that, between described condenser and described flash vessel, is provided with control valve, and described refrigerating circulatory device further comprises:
Bypass valve, described bypass valve is in parallel with described control valve and described flash vessel.
11. refrigerating circulatory devices according to claim 10, is characterized in that, also comprise:
First throttle device and the first control valve, described first throttle device and described the first control valve are located at respectively between described control valve and described flash vessel, described flash vessel and described throttling arrangement, and described control valve, described first throttle device and described flash vessel are in parallel with described bypass valve.
12. refrigerating circulatory devices according to claim 9, is characterized in that, described throttling arrangement is capillary tube or expansion valve.
13. according to the refrigerating circulatory device described in any one in claim 9-12, it is characterized in that, between described gas returning port and described air jet pipe, is provided with the second control valve.
14. refrigerating circulatory devices according to claim 9, is characterized in that, described refrigerating circulatory device is air-conditioning.
15. refrigerating circulatory devices according to claim 9, is characterized in that, further comprise:
Water tank, described water tank be connected with described vaporizer with described vaporizer heat exchange.
16. refrigerating circulatory devices according to claim 15, is characterized in that, described refrigerating circulatory device is heat pump water heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093723.6U CN203756524U (en) | 2014-03-03 | 2014-03-03 | Double-level rotating compressor and refrigerating cycling device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420093723.6U CN203756524U (en) | 2014-03-03 | 2014-03-03 | Double-level rotating compressor and refrigerating cycling device with same |
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| Publication Number | Publication Date |
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| CN203756524U true CN203756524U (en) | 2014-08-06 |
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| CN201420093723.6U Expired - Fee Related CN203756524U (en) | 2014-03-03 | 2014-03-03 | Double-level rotating compressor and refrigerating cycling device with same |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103821716A (en) * | 2014-03-03 | 2014-05-28 | 广东美芝制冷设备有限公司 | Two-stage rotary compressor and refrigeration circulating device with same |
| CN105065272A (en) * | 2015-08-24 | 2015-11-18 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN105134595A (en) * | 2015-09-17 | 2015-12-09 | 广东美芝制冷设备有限公司 | Compressor |
| US10254013B2 (en) | 2014-03-03 | 2019-04-09 | Guangdong Meizhi Compressor Co., Ltd. | Two-stage rotary compressor and refrigeration cycle device having same |
| CN110274400A (en) * | 2019-06-17 | 2019-09-24 | 珠海格力电器股份有限公司 | Gas-supplying enthalpy-increasing system and its control method |
| CN112412785A (en) * | 2019-08-23 | 2021-02-26 | 广东美芝制冷设备有限公司 | Compressor and refrigeration cycle device |
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2014
- 2014-03-03 CN CN201420093723.6U patent/CN203756524U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821716A (en) * | 2014-03-03 | 2014-05-28 | 广东美芝制冷设备有限公司 | Two-stage rotary compressor and refrigeration circulating device with same |
| US10254013B2 (en) | 2014-03-03 | 2019-04-09 | Guangdong Meizhi Compressor Co., Ltd. | Two-stage rotary compressor and refrigeration cycle device having same |
| CN105065272A (en) * | 2015-08-24 | 2015-11-18 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN105065272B (en) * | 2015-08-24 | 2018-03-23 | 广东美芝制冷设备有限公司 | Rotary compressor |
| CN105134595A (en) * | 2015-09-17 | 2015-12-09 | 广东美芝制冷设备有限公司 | Compressor |
| CN105134595B (en) * | 2015-09-17 | 2017-06-16 | 广东美芝制冷设备有限公司 | Compressor |
| CN110274400A (en) * | 2019-06-17 | 2019-09-24 | 珠海格力电器股份有限公司 | Gas-supplying enthalpy-increasing system and its control method |
| CN112412785A (en) * | 2019-08-23 | 2021-02-26 | 广东美芝制冷设备有限公司 | Compressor and refrigeration cycle device |
| CN112412785B (en) * | 2019-08-23 | 2022-08-19 | 广东美芝制冷设备有限公司 | Compressor and refrigeration cycle device |
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