CN111894855A - Rotary compressor, heat pump system and air conditioning system - Google Patents
Rotary compressor, heat pump system and air conditioning system Download PDFInfo
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- CN111894855A CN111894855A CN201910377728.9A CN201910377728A CN111894855A CN 111894855 A CN111894855 A CN 111894855A CN 201910377728 A CN201910377728 A CN 201910377728A CN 111894855 A CN111894855 A CN 111894855A
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- compression unit
- rotary compressor
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- exhaust
- condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
Abstract
The invention relates to the technical field of compressors, in particular to a rotary compressor, a heat pump system comprising the rotary compressor and an air conditioning system comprising the rotary compressor. The rotary compressor includes: the first compression unit and the second compression unit are independent of each other and are separated by an intermediate partition plate; the first exhaust path is communicated to the first exhaust port from the first compression unit through the inner space of the rotary compressor; and a second exhaust port and a second exhaust path communicating from the second compression unit to the second exhaust port. The two independent compression units of the rotary compressor can be communicated to the two independent condensers through the two independent exhaust paths, so that two sets of working cycles are formed, the heating capacity of the two sets of working cycles can be adjusted according to actual needs, the system cost is reduced, and the energy efficiency is improved.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a rotary compressor, a heat pump system and an air conditioning system.
Background
On the background of energy conservation and emission reduction, the energy efficiency of a heat pump system/air conditioning system is required to be improved, and meanwhile, the cost is reduced, which means that the traditional heat pump system/air conditioning system and parts thereof need to be innovated.
A conventional heat pump system/air conditioning system is generally a set of system pairs, one compressor, as shown in fig. 1, and a set of heat pump system/air conditioning system 1 ' is formed by a compressor 11 ', a condenser 12 ', a throttle valve 13 ' and an evaporator 14 ' to form a working cycle. The compressor 11 'is a core component of the heat pump system/air conditioning system 1', and is also the most costly component. If the amount of compressors used in a system can be reduced, the cost of the system can be significantly reduced.
The compressor 11 'commonly used in the conventional heat pump system/air conditioning system 1' is a single-suction single-row single-cylinder compressor, and its structural schematic diagram is shown in fig. 2. The refrigerant enters the compressor 11 'through the suction port 112' from the accumulator 111 ', is compressed by the compression unit 113', and is discharged through the discharge port 114 ', and enters the operation cycle of the heat pump system/air conditioning system 1' for heating/cooling.
Fig. 3 is a P-h diagram (pressure-enthalpy diagram) of a refrigeration cycle, in which the solid line represents a theoretical cycle and the dotted line represents an actual cycle. It can be seen that the heat transfer temperature difference between the evaporator and the condenser greatly affects the performance of the system, and if the heat transfer temperature difference between the evaporator and the condenser can be reduced, the improvement of the performance of the system is very advantageous. For example, heating water from 15 c to 60 c, the heat transfer temperature difference can be very large when there is only one condenser in the heat pump system/air conditioning system. On the other hand, in the case where a set of heat pump system/air conditioning system needs to provide two different heating temperatures, the working fluid is generally heated to a higher temperature, which causes a great waste of energy.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present invention and therefore may include information that does not constitute prior art known to a person of ordinary skill in the art.
Disclosure of Invention
In view of the above, the present invention provides a rotary compressor, a heat pump system including the rotary compressor, and an air conditioning system including the rotary compressor, in which two sets of duty cycles are integrated in one rotary compressor through the improvement of the structure of the rotary compressor, and one rotary compressor is communicated with two independent condensers through two independent exhaust paths, so that the system has two condensing temperatures, which can reduce the usage amount of the compressor, reduce the heat transfer temperature difference at the condensers, and further improve the efficiency of the system.
According to an aspect of the present invention, there is provided a rotary compressor including: the compression device comprises a first compression unit and a second compression unit, wherein the first compression unit and the second compression unit are independent of each other and are separated by an intermediate partition plate; a first discharge port and a first discharge path communicating from the first compression unit to the first discharge port through an inner space of the rotary compressor; and a second exhaust port and a second exhaust path communicating from the second compression unit to the second exhaust port.
Preferably, in the above rotary compressor, the first compression unit includes a first cylinder and a first bearing disposed above the first cylinder, and the first bearing and the intermediate partition define a compression chamber of the first compression unit; the second compression unit comprises a second cylinder and a second bearing arranged below the second cylinder, and the second bearing and the middle partition plate define a compression cavity of the second compression unit.
Preferably, in the above rotary compressor, the intermediate partition is provided with an exhaust cavity, and the second compression unit is communicated to the second exhaust port through the exhaust cavity.
Preferably, in the above rotary compressor, the second bearing is provided with a second exhaust through hole, and the second compression unit is communicated to the second exhaust port through the second exhaust through hole.
Preferably, in the above rotary compressor, the second bearing is provided with a second exhaust through hole, the second cylinder is provided with an exhaust hole communicated with the second exhaust through hole, and the second compression unit is communicated to the second exhaust port sequentially through the second exhaust through hole and the exhaust hole.
Preferably, in the above rotary compressor, the second compression unit further includes a muffler disposed below the second bearing, an exhaust cavity is formed between the muffler and the second bearing, the second bearing is provided with a second exhaust through hole communicated with the exhaust cavity, and the second compression unit is communicated to the second exhaust port through the second exhaust through hole and the exhaust cavity in sequence.
Preferably, in the above rotary compressor, the first bearing is provided with a first exhaust through hole, and the first compression unit is communicated to an inner space of the rotary compressor through the first exhaust through hole.
Preferably, the rotary compressor further comprises a gas-liquid separator; the middle partition plate is provided with a gas suction channel which is respectively communicated with the first compression unit and the second compression unit, and the gas-liquid separator is communicated with the gas suction channel through a common pipeline; or, the first compression unit is provided with a first air suction port, the gas-liquid separator is communicated with the first air suction port through a first pipeline, the second compression unit is provided with a second air suction port, and the gas-liquid separator is communicated with the second air suction port through a second pipeline.
According to another aspect of the present invention, there is provided a heat pump system comprising the above rotary compressor, and: the first compression unit is communicated with the first condenser through the first exhaust path, and the second compression unit is communicated with the second condenser through the second exhaust path; and the first condenser and the second condenser are communicated with the evaporator, and the evaporator is communicated with the first compression unit and the second compression unit through a gas-liquid separator of the rotary compressor.
Preferably, the heat pump system described above further includes: and the first condenser and the second condenser are communicated with the evaporator through the throttle valve.
According to another aspect of the present invention, there is provided an air conditioning system including the rotary compressor described above, and: the first compression unit is communicated with the first condenser through the first exhaust path, and the second compression unit is communicated with the second condenser through the second exhaust path; and the first condenser and the second condenser are communicated with the evaporator, and the evaporator is communicated with the first compression unit and the second compression unit through a gas-liquid separator of the rotary compressor.
Preferably, the air conditioning system further includes: and the first condenser and the second condenser are communicated with the evaporator through the throttle valve.
Compared with the prior art, the invention has the beneficial effects that:
the two independent compression units of the rotary compressor are communicated to the two independent condensers through the two independent exhaust paths, so that two sets of working cycles are formed, the heating capacity of the two sets of working cycles can be adjusted according to actual needs, the two sets of working cycles have the same or different condensing temperatures, the using amount of the compressor can be reduced, the heat transfer temperature difference at the condensers can be reduced, and the efficiency of the system is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 shows a schematic diagram of a heat pump system/air conditioning system of the prior art;
FIG. 2 shows a schematic diagram of a prior art single cylinder compressor;
FIG. 3 shows a pressure-enthalpy diagram of the refrigeration cycle;
FIG. 4 is a schematic view illustrating a structure of a rotary compressor according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating a structure of a rotary compressor according to another embodiment of the present invention;
fig. 6 is a schematic view illustrating a structure of a rotary compressor according to another embodiment of the present invention;
fig. 7 is a schematic view illustrating a structure of a rotary compressor according to another embodiment of the present invention;
fig. 8 is a schematic view illustrating a suction structure of a rotary compressor according to an embodiment of the present invention;
fig. 9 is a schematic view illustrating a suction structure of a rotary compressor in accordance with another embodiment of the present invention;
fig. 10 shows a schematic diagram of a heat pump system/air conditioning system in an embodiment of the invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
Fig. 4 illustrates a rotary compressor in an embodiment of the present invention. Referring to fig. 4, the rotary compressor 2 in the present embodiment includes:
a first compression unit 21 and a second compression unit 22, the first compression unit 21 and the second compression unit 22 being independent of each other and separated by an intermediate partition 23;
a first exhaust port 24 and a first exhaust path which is communicated from the first compression unit 21 to the first exhaust port through an inner space of the rotary compressor 2; and
a second exhaust port 25, and a second exhaust path communicating from the second compression unit 22 to the second exhaust port 25.
Wherein the first compression unit 21 includes a first cylinder 211 and a first bearing 212 provided above the first cylinder 211, the first bearing 212 and the middle partition plate 23 defining a compression chamber of the first compression unit 21. Specifically, the first cylinder 211 is provided therein with a first piston 213, the first piston 213 is driven by a crankshaft 26 of the rotary compressor 2 to rotate in the first cylinder 211, the crankshaft 26 is driven by a motor assembly 27 of the rotary compressor 2 to rotate, a compression cavity of the first compression unit 21 is formed between the first piston 213 and the first cylinder 211, and the first bearing 212 and the middle partition plate 23 are respectively provided above and below the first cylinder 211 to define the compression cavity of the first compression unit 21.
The second compression unit 22 includes a second cylinder 221 and a second bearing 222 provided under the second cylinder 221, the second bearing 222 and the middle partition plate 23 defining a compression chamber of the second compression unit 22. Specifically, the second cylinder 221 is provided therein with a second piston 223, the second piston 223 is driven by the crankshaft 26 of the rotary compressor 2 to rotate in the second cylinder 221, a compression cavity of the second compression unit 22 is formed between the second piston 223 and the second cylinder 221, and the second bearing 222 and the middle partition plate 23 are respectively provided above and below the second cylinder 221 to define the compression cavity of the second compression unit 22.
The rotary compressor 2 may suck air into the first and second compressing units 21 and 22 through an air suction port via the intermediate partition 23. Referring to fig. 8, the rotary compressor 2 further includes a gas-liquid separator 28, and the refrigerant is introduced into the rotary compressor 2 through the gas-liquid separator 28. Specifically, as shown in fig. 4, the intermediate partition 23 of the rotary compressor 2 is provided with a suction passage (not specifically shown) which communicates with the first compression unit 21 and the second compression unit 22, respectively, and the gas-liquid separator 28 communicates with the suction passage of the intermediate partition 23 through a common suction port 291 via a common pipe 281. Thus, both the first compression unit 21 and the second compression unit 22 may suck the refrigerant through the common suction port 291 and the suction passage of the intermediate plate 23.
In other embodiments, the first compressing unit 21 and the second compressing unit 22 may be provided with respective suction ports, and the suction ports may be separated and independent from each other. As shown in fig. 9 and 4, the gas-liquid separator 28 may have a first pipe line 282 and a second pipe line 283 which are independent of each other, the first compression unit 21 has a first suction port 292, the first suction port 292 communicates with the first cylinder 211, and the gas-liquid separator 28 communicates with the first suction port 292 through the first pipe line 282, so that the first compression unit 21 sucks the refrigerant from the first pipe line 282. The second compression unit 22 has a second suction port 293, the second suction port 293 communicates with the second cylinder 221, and the gas-liquid separator 28 communicates with the second suction port 293 via a second pipe 283, so that the second compression unit 22 sucks the refrigerant from the second pipe 283.
Since the first compression unit 21 and the second compression unit 22 are both connected to the same gas-liquid separator 28, they have the same suction temperature.
Further, the refrigerant compressed by the first and second compression units 21 and 22 is discharged out of the rotary compressor 2 through the first and second discharge paths, respectively, which are independent of each other. Specifically, referring to fig. 4, the rotary compressor 2 has a top housing, a middle housing and a bottom housing that are sealingly engaged, and the first exhaust port 24 is provided in the top housing of the rotary compressor 2. The positions of the top shell, the middle shell and the bottom shell are not specifically shown, wherein the shell portion above the motor assembly 27 can be regarded as the top shell of the rotary compressor 2, the shell portion below the second bearing 222 can be regarded as the bottom shell of the rotary compressor 2, and the shell portion connected between the top shell and the bottom shell can be regarded as the middle shell of the rotary compressor 2. The first bearing 212 is provided with a first exhaust through hole (not specifically shown), when the first compression unit 21 exhausts air, the refrigerant is exhausted from the exhaust port of the first cylinder 211, and then exhausted to the inner space of the rotary compressor 2 through the first exhaust through hole of the first bearing 212, and after cooling the motor assembly 27, the refrigerant is exhausted from the rotary compressor 2 through the first exhaust port 24 arranged on the top housing. The first exhaust path may be illustrated with reference to the dashed arrow in FIG. 4. The second exhaust port 25 is disposed in the middle casing of the rotary compressor 2, the intermediate partition plate 23 is provided with an exhaust cavity (not specifically shown), and when the second compression unit 22 exhausts, the refrigerant is exhausted from the exhaust port of the second cylinder 221, then exhausted to the second exhaust port 25 disposed in the middle casing through the exhaust cavity of the intermediate partition plate 23, and exhausted out of the rotary compressor 2 through the second exhaust port 25. The second exhaust path may be as shown with reference to solid arrows a and b in fig. 4.
In other embodiments, the second compression unit 22 may discharge the refrigerant out of the rotary compressor 2 through the second bearing 222. Referring to the embodiment shown in fig. 5, the second exhaust port 25 is disposed in the middle housing of the rotary compressor 2, the second bearing 222 is provided with a second exhaust through hole (not specifically shown), and when the second compression unit 22 exhausts, the refrigerant is discharged from the exhaust port of the second cylinder 221 into the cavity of the muffler 224 (shown by the solid arrow a in fig. 5), and then discharged to the second exhaust port 25 through the second exhaust through hole of the second bearing 222, and discharged out of the rotary compressor 2 through the second exhaust port 25 (shown by the solid arrows b, c, d in fig. 5).
Referring to the embodiment shown in fig. 6, the second compression unit 22 may also discharge the refrigerant out of the rotary compressor 2 through the second bearing 222 and the second cylinder 221. Specifically, the second exhaust port 25 is provided in the intermediate housing of the rotary compressor 2, the second bearing 222 is provided with a second exhaust through hole (not specifically shown), the second cylinder 221 is provided with an exhaust hole (not specifically shown) communicating with the second exhaust through hole of the second bearing 222, and when the second compression unit 22 exhausts, the refrigerant is discharged from the exhaust port of the second cylinder 221 into the cavity of the muffler 224 (see solid arrow a in fig. 6), passes through the second exhaust through hole of the second bearing 222 and the exhaust hole of the second cylinder 221 in order, is discharged into the second exhaust port 25, and is discharged out of the rotary compressor 2 through the second exhaust port 25 (see solid arrows b, c, and d in fig. 6). In a specific embodiment, the exhaust hole of the second cylinder 221 extends from the lower end surface (the end surface contacting the second bearing 222) of the second cylinder 221 to the outer surface thereof through the cylinder wall thereof, and takes the shape of a pipe as indicated by arrows b and c in fig. 6, but the present invention is not limited thereto.
Referring to the embodiment shown in fig. 7, the second compression unit 22 may also discharge the refrigerant out of the rotary compressor 2 through the second bearing 222 and the muffler 224. Specifically, the second exhaust port 25 is disposed at the bottom shell of the rotary compressor 2, the second compression unit 22 further includes a muffler 224 disposed below the second bearing 222, an exhaust chamber 225 is formed between the muffler 224 and the second bearing 224, and the second bearing 222 is provided with a second exhaust through hole (not specifically labeled) communicating with the exhaust chamber 225. When the second compression element 22 discharges the refrigerant, the refrigerant is discharged from the discharge port of the second cylinder 221, passes through the second discharge through hole of the second bearing 222 and the discharge chamber 225 in this order, is discharged to the second discharge port 25, and is discharged to the rotary compressor 2 through the second discharge port 25. The second exhaust path of the present embodiment can be seen with reference to solid arrows a and b in fig. 7.
In the above embodiments, the first compression unit 21 and the second compression unit 22 correspond to different refrigerant flow paths, wherein the refrigerant in the first compression unit 21 is compressed, discharged through the exhaust port of the first cylinder 211, enters the rotary compressor 2 through the first exhaust path, passes through the motor assembly 27, and is discharged through the first exhaust port 24 on the top shell. The refrigerant of the second compression unit 22 is compressed, discharged through the discharge port of the second cylinder 221, discharged to the second discharge port 25 provided at the middle or bottom casing through the second discharge path, and discharged to the outside of the rotary compressor 2 through the second discharge port 25. Specifically, the refrigerant discharged from the discharge port of the second cylinder 221 may be discharged to the discharge cavity of the intermediate partition 23 and directly discharged to the outside of the rotary compressor 2 through a pipe connecting the discharge cavity of the intermediate partition 23 and the second discharge port 25; or flows into the second exhaust through hole of the second bearing 222 and is directly discharged to the outside of the rotary compressor 2 through a pipe connecting the second exhaust through hole of the second bearing 222 and the second exhaust port 25; or flows into the exhaust through hole of the second bearing 222 and the exhaust hole of the second cylinder 221 and is directly discharged to the outside of the rotary compressor 2 through a pipe connecting the exhaust hole of the second cylinder 221 and the second exhaust port 25; or flows into the discharge through hole of the second bearing 222 and the discharge chamber 225 between the second bearing 222 and the muffler 224 and is directly discharged to the outside of the rotary compressor 2 through a pipe connecting the discharge chamber 225 and the second discharge port 25.
With the two independent discharge paths of the rotary compressor 2 described in any of the above embodiments, the first and second compression units 21 and 22 can discharge the refrigerant to two independent condensers through the first and second discharge ports 24 and 25, respectively, so that the two condensers can be applied to different condensing temperatures.
Specifically, referring to fig. 10, when the rotary compressor 2 described in any of the above embodiments is applied to a heat pump system or an air conditioning system, taking a heat pump system as an example, the heat pump system includes the rotary compressor 2 described in any of the above embodiments, and:
Further, the heat pump system further includes an evaporator 34, the first condenser 31 and the second condenser 32 are both communicated with the evaporator 34, the evaporator 34 is communicated with the first compression unit 21 and the second compression unit 22 through the gas-liquid separator 28 of the rotary compressor 2, and the first compression unit 21 and the second compression unit 22 have the same evaporation temperature. Wherein the gas-liquid separator 28 may communicate with the first compression unit 21 and the second compression unit 22 through two independent pipes, respectively, or as shown by the dotted line circle in the drawing, the gas-liquid separator 28 may communicate with the first compression unit 21 and the second compression unit 22 through the intermediate partition 23. Between the condenser and the evaporator 34, a throttle valve for flow restriction is also provided. In some embodiments, as shown in fig. 10, the first condenser 31 and the second condenser 32 may share a throttle valve 33, i.e. both the first condenser 31 and the second condenser 32 communicate with the evaporator 34 through the throttle valve 33. In other embodiments, the first condenser 31 and the second condenser 32 may correspond to respective independent throttle valves.
The heat pump system forms two working cycles through a rotary compressor 2, wherein a refrigerant in the first working cycle is compressed by a first compression unit 21 to form high-temperature and high-pressure refrigerant vapor, the high-temperature and high-pressure refrigerant vapor flows to a first condenser 31 through a first exhaust path 201, and is cooled and condensed into medium-temperature and high-pressure refrigerant liquid by low-temperature fluid (such as water or air) in the first condenser 31, and the refrigerant releases heat to heat the low-temperature fluid in the process; the refrigerant liquid at middle temperature and high pressure flows out of the first condenser 31 and is throttled into liquid refrigerant at low temperature and low pressure by the throttle valve 33, the liquid refrigerant at low temperature and low pressure enters the evaporator 34, and the liquid refrigerant absorbs heat from high-temperature fluid (such as normal temperature air) in the evaporator 34 and is gasified into high-temperature vapor at low pressure, thereby completing a working cycle; the high-temperature low-pressure vapor enters the gas-liquid separator 28 to undergo gas-liquid separation, and then the gaseous refrigerant is again sucked into the first compression unit 21, and the next operation cycle is continued. The principle of the second working cycle is similar to that of the first working cycle, and the refrigerant returns to the gas-liquid separator 28 through the second compression unit 22, the second exhaust path 202, the second condenser 32, the throttle valve 33 and the evaporator 34 in sequence to complete one working cycle. The two condensers in the two working cycles can be used in the same heating environment or different heating environments, such as the first condenser 31 and the second condenser 32 are respectively used for heating water with different temperature requirements or heating the water to the required temperature in a segmented manner. One rotary compressor 2 corresponds to two sets of working cycles, so that the cost of the heat pump system is greatly saved, and the system energy efficiency is improved.
When the rotary compressor of the present invention is applied to an air conditioning system, the first compression unit and the second compression unit of the rotary compressor are respectively communicated to the first condenser and the second condenser of the air conditioning system through the first exhaust path and the second exhaust path, which can realize the operation at the same or different condensing temperatures, similarly to the heat pump system in the above embodiment.
In summary, the rotary compressor provided by the present invention separates the first compression unit and the second compression unit independently by the intermediate partition plate, the refrigerant compressed by the first compression unit is discharged to the internal space of the rotary compressor, and then discharged from the rotary compressor through the first exhaust port on the top housing after cooling the motor; the refrigerant compressed by the second compression unit is directly discharged out of the rotary compressor through a second discharge port provided in the middle shell or the bottom shell. The displacements of the first compression unit and the second compression unit are independent of each other and can be determined according to their respective nominal refrigeration/heating capacities. The heat pump system/air conditioning system adopts the rotary compressor, can integrate two sets of working cycles, wherein the two sets of working cycles correspond to an evaporation temperature and two same or different condensation temperatures, and the rated heating/refrigerating capacities of the two sets of working cycles can be the same or different.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (12)
1. A rotary compressor, comprising:
the compression device comprises a first compression unit and a second compression unit, wherein the first compression unit and the second compression unit are independent of each other and are separated by an intermediate partition plate;
a first discharge port and a first discharge path communicating from the first compression unit to the first discharge port through an inner space of the rotary compressor; and
a second exhaust port and a second exhaust path communicating from the second compression unit to the second exhaust port.
2. The rotary compressor of claim 1, wherein the first compression unit comprises a first cylinder and a first bearing provided above the first cylinder, the first bearing and the intermediate partition defining a compression chamber of the first compression unit;
the second compression unit comprises a second cylinder and a second bearing arranged below the second cylinder, and the second bearing and the middle partition plate define a compression cavity of the second compression unit.
3. The rotary compressor of claim 2, wherein the intermediate partition is provided with a discharge cavity, and the second compression unit is communicated to the second discharge port through the discharge cavity.
4. The rotary compressor of claim 2, wherein the second bearing is provided with a second discharge through hole, and the second compression unit is communicated to the second discharge port through the second discharge through hole.
5. The rotary compressor of claim 2, wherein the second bearing is provided with a second discharge through hole, the second cylinder is provided with a discharge hole communicating with the second discharge through hole, and the second compression unit is communicated to the second discharge port through the second discharge through hole and the discharge hole in sequence.
6. The rotary compressor of claim 2, wherein the second compression unit further comprises a muffler disposed below the second bearing, a discharge chamber is formed between the muffler and the second bearing, and the second bearing is provided with a second discharge through hole communicating with the discharge chamber,
the second compression unit is communicated to the second exhaust port through the second exhaust through hole and the exhaust cavity in sequence.
7. The rotary compressor of claim 2, wherein the first bearing is provided with a first exhaust through hole, and the first compression unit is communicated to an inner space of the rotary compressor through the first exhaust through hole.
8. The rotary compressor of claim 1, further comprising a gas-liquid separator;
the middle partition plate is provided with a gas suction channel which is respectively communicated with the first compression unit and the second compression unit, and the gas-liquid separator is communicated with the gas suction channel through a common pipeline; or
The first compression unit is provided with a first air suction port, the gas-liquid separator is communicated with the first air suction port through a first pipeline, the second compression unit is provided with a second air suction port, and the gas-liquid separator is communicated with the second air suction port through a second pipeline.
9. A heat pump system, characterized in that the heat pump system comprises a rotary compressor according to any one of claims 1-8, and:
the first compression unit is communicated with the first condenser through the first exhaust path, and the second compression unit is communicated with the second condenser through the second exhaust path;
and the first condenser and the second condenser are communicated with the evaporator, and the evaporator is communicated with the first compression unit and the second compression unit through a gas-liquid separator of the rotary compressor.
10. The heat pump system of claim 9, further comprising:
and the first condenser and the second condenser are communicated with the evaporator through the throttle valve.
11. An air conditioning system, characterized in that the air conditioning system comprises the rotary compressor of any one of claims 1 to 8, and:
the first compression unit is communicated with the first condenser through the first exhaust path, and the second compression unit is communicated with the second condenser through the second exhaust path;
and the first condenser and the second condenser are communicated with the evaporator, and the evaporator is communicated with the first compression unit and the second compression unit through a gas-liquid separator of the rotary compressor.
12. The air conditioning system as claimed in claim 11, further comprising:
and the first condenser and the second condenser are communicated with the evaporator through the throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377728.9A CN111894855B (en) | 2019-05-05 | 2019-05-05 | Rotary compressor, heat pump system and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377728.9A CN111894855B (en) | 2019-05-05 | 2019-05-05 | Rotary compressor, heat pump system and air conditioning system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111894855A true CN111894855A (en) | 2020-11-06 |
| CN111894855B CN111894855B (en) | 2022-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910377728.9A Active CN111894855B (en) | 2019-05-05 | 2019-05-05 | Rotary compressor, heat pump system and air conditioning system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775338A (en) * | 2014-01-07 | 2014-05-07 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating circulating system with same |
| CN104728109A (en) * | 2015-02-03 | 2015-06-24 | 广东美芝制冷设备有限公司 | Air conditioning system and rotating compressor component thereof |
| CN107560210A (en) * | 2017-08-21 | 2018-01-09 | 珠海格力电器股份有限公司 | A kind of refrigeration system |
| CN108412764A (en) * | 2018-04-16 | 2018-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and cooling cycle system and air conditioner |
| CN208749557U (en) * | 2018-06-25 | 2019-04-16 | 上海海立电器有限公司 | Air-conditioning system and its compressor and exhaust structure |
-
2019
- 2019-05-05 CN CN201910377728.9A patent/CN111894855B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775338A (en) * | 2014-01-07 | 2014-05-07 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigerating circulating system with same |
| CN203717344U (en) * | 2014-01-07 | 2014-07-16 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration cycle system provided with same |
| CN104728109A (en) * | 2015-02-03 | 2015-06-24 | 广东美芝制冷设备有限公司 | Air conditioning system and rotating compressor component thereof |
| CN107560210A (en) * | 2017-08-21 | 2018-01-09 | 珠海格力电器股份有限公司 | A kind of refrigeration system |
| CN108412764A (en) * | 2018-04-16 | 2018-08-17 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and cooling cycle system and air conditioner |
| CN208749557U (en) * | 2018-06-25 | 2019-04-16 | 上海海立电器有限公司 | Air-conditioning system and its compressor and exhaust structure |
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| CN111894855B (en) | 2022-09-09 |
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