CN107191372B - Rotary compressor and refrigerating device with same - Google Patents
Rotary compressor and refrigerating device with same Download PDFInfo
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- CN107191372B CN107191372B CN201710642024.0A CN201710642024A CN107191372B CN 107191372 B CN107191372 B CN 107191372B CN 201710642024 A CN201710642024 A CN 201710642024A CN 107191372 B CN107191372 B CN 107191372B
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- rotary compressor
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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
- F04C23/001—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 of similar working principle
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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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
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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
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
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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
Abstract
The invention discloses a rotary compressor and a refrigerating device with the same, wherein the rotary compressor comprises: a housing; the motor comprises a rotor and a stator, and two sides of the rotor are respectively provided with a one-way bearing; the two compression mechanism parts are respectively a first compression mechanism part and a second compression mechanism part, each compression mechanism part comprises a crankshaft, at least one cylinder, a piston and a sliding sheet, each crankshaft is respectively matched with a one-way bearing on the same side, each crankshaft is matched with a corresponding one-way bearing and a corresponding rotor to enable the rotation directions of the two crankshafts to be opposite, the first compression mechanism part is provided with two first compression chambers, and the second compression mechanism part is provided with two communicated second compression chambers. According to the rotary compressor disclosed by the invention, the compression mode of the rotary compressor can be switched, so that when the rotary compressor is applied to a refrigerating device, the energy efficiency requirements of various operation working conditions of the refrigerating device can be better met.
Description
Technical Field
The invention relates to the technical field of refrigeration equipment, in particular to a rotary compressor and a refrigeration device with the rotary compressor.
Background
Due to the fact that national policies and requirements of customers on household air conditioners are higher and higher, a combined compressor manufacturer of each large air conditioner manufacturer develops a plurality of new technologies, for example, an enhanced vapor injection technology can remarkably improve the low-temperature heating capacity of an air conditioning system, for example, an independent compression technology is developed on the basis of the enhanced vapor injection technology, the technology can remarkably improve the energy efficiency of the air conditioning system, and for example, a two-stage compression middle air supply technology is applied to the air conditioning system to improve the low-temperature heating capacity of the air conditioning system. The two-stage compression middle air supply technology is taken as an example, the pressure ratio of the air conditioning system adopting the technology is smaller under the conventional refrigeration working condition or the heating working condition when the outdoor temperature is not very low, and the two-stage compression means that the air suction and the air exhaust are carried out twice, so that the power of the air conditioning system can be obviously increased. However, in the related art, the air conditioning system cannot have both the ultra-low temperature heating capability and the energy-efficient operation capability under the normal working condition.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a rotary compressor, which can switch the compression mode, so that when the rotary compressor is used for a refrigerating device, the energy efficiency of the refrigerating device under various operation conditions can be obviously improved.
The invention also provides a refrigerating device with the rotary compressor.
According to an embodiment of a first aspect of the present invention, a rotary compressor includes: the shell is provided with an exhaust pipe; the motor is arranged in the shell and comprises a rotor and a stator arranged on the shell, and two sides of the rotor are respectively provided with a one-way bearing; two compression mechanism parts which are respectively a first compression mechanism part and a second compression mechanism part and are distributed at two sides of the motor, wherein each compression mechanism part comprises a crankshaft, at least one cylinder, a piston and a slide sheet, each crankshaft is respectively matched with the one-way bearing at the same side, each crankshaft is matched with the corresponding one-way bearing and the rotor so that the rotation directions of the two crankshafts are opposite, each cylinder is provided with a cylinder cavity and a slide sheet groove, each cylinder cavity is internally provided with the piston which eccentrically rotates and is sleeved on the crankshaft, each slide sheet groove is internally provided with the slide sheet which reciprocates, the first compression mechanism part is provided with two first compression chambers, exhaust ports of the two first compression chambers are respectively communicated with the exhaust pipe, and the second compression mechanism part is provided with two second compression chambers, the exhaust passage of one of the second compression chambers is connected to the suction passage of the other of the second compression chambers, and the exhaust passage of the other of the second compression chambers is communicated with the exhaust pipe.
According to the rotary compressor provided by the embodiment of the invention, the two sides of the rotor are respectively provided with the one-way bearings, so that when the rotation direction of the rotor is changed, the operation states of the first compression mechanism part and the second compression mechanism part can be switched, the compression mode of the rotary compressor is switched, and when the rotary compressor is applied to a refrigerating device, the energy efficiency requirements of each operation condition of the refrigerating device can be better met.
According to some embodiments of the present invention, the vane groove of at least one of the cylinders is configured as a working chamber whose internal pressure is variable, the working chamber defining the first compression chamber or the second compression chamber. Therefore, one cylinder can define two working chambers, namely one cylinder is provided with two compression chambers, so that the number of the cylinders is reduced, and the structure of the rotary compressor is simplified.
According to some embodiments of the present invention, at least one of the first compression chambers has a first supplementary port, so that when the rotary compressor is applied to a refrigeration apparatus, energy efficiency of the refrigeration apparatus may be improved.
According to some embodiments of the present invention, each of the first compression chambers is provided with the first supplementary air port, so that when the rotary compressor is applied to a refrigeration apparatus, the energy efficiency of the refrigeration apparatus may be further improved.
According to some embodiments of the present invention, the second compression mechanism part has a second air supplement port communicating with an air suction passage of the second compression chamber of the lower stage, thereby increasing a pressure ratio of the rotary compressor and reducing power consumption of the rotary compressor.
According to some embodiments of the invention, the exhaust pipe is one and is located between the two compression mechanism portions.
A refrigeration apparatus according to an embodiment of the second aspect of the present invention includes the rotary compressor according to the above-described embodiment of the first aspect of the present invention.
According to the refrigeration device provided by the embodiment of the invention, by adopting the rotary compressor, the compression mode of the rotary compressor can be switched according to the operation condition of the refrigeration device, so that the compression mode of the rotary compressor can well exert advantages to meet the energy efficiency requirement of the operation condition.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a rotary compressor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a refrigeration apparatus according to an embodiment of the present invention.
Reference numerals:
a refrigerating device 200,
An evaporator 102, a first end 102a of the evaporator, a second end 102b of the evaporator,
A primary throttle device 103, a first end 103a of the primary throttle device, a second end 103b of the primary throttle device,
A secondary throttle 104, a first end 104a of the secondary throttle, a second end 104b of the secondary throttle, and a secondary throttle valve,
A gas-liquid separator 105,
A first end 105a of the gas-liquid separator, a second end 105b of the gas-liquid separator, a third end 105c of the gas-liquid separator,
A rotary compressor 100,
A housing 1, a motor 2, a rotor 21, a stator 22,
A first one-way bearing 3, a second one-way bearing 4,
A first compression mechanism part 5, a first compression chamber 50a, a first crankshaft 51, a second compression mechanism part 6, a second compression chamber 60a, a second gas supplementing port 60b, a second crankshaft 61,
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "left", "right", "inside", "outside", "forward", "direction", "axial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A rotary compressor 100 according to an embodiment of a first aspect of the present invention will be described with reference to fig. 1.
As shown in fig. 1, a rotary compressor 100 according to an embodiment of the present invention includes a casing 1, a motor 2, and two compression mechanism parts.
The casing 1 is provided with a discharge pipe (not shown) through which the refrigerant compressed by the rotary compressor 100 can be discharged out of the rotary compressor 100. The motor 2 is arranged in the housing 1, the motor 2 includes a rotor 21 and a stator 22 arranged on the housing 1, wherein the rotor 21 can be arranged in the stator 22 in a penetrating manner, two sides (for example, left and right sides in fig. 1) of the rotor 21 are respectively provided with a one-way bearing, and the two one-way bearings are respectively a first one-way bearing 3 and a second one-way bearing 4.
The two compression mechanism parts are distributed on two sides (for example, the left side and the right side in fig. 1) of the motor 2 and are respectively a first compression mechanism part 5 and a second compression mechanism part 6, each compression mechanism part comprises a crankshaft, at least one cylinder, a piston and a slide sheet, each crankshaft is respectively matched with a one-way bearing on the same side, each crankshaft is matched with a corresponding one-way bearing and a rotor 21 to enable the rotation directions of the two crankshafts to be opposite, each cylinder is provided with a cylinder cavity and a slide sheet groove, each cylinder cavity is internally provided with the piston which eccentrically rotates and is sleeved on the crankshaft, each slide sheet groove is internally provided with the slide sheet which reciprocates, the first compression mechanism part 5 is provided with two first compression chambers 50a, exhaust ports of the two first compression chambers 50a are respectively communicated with an exhaust pipe, the second compression mechanism part 6 is provided with two second compression chambers 60a, an exhaust passage of one second compression chamber 60a is connected with an air suction passage of the other second compression chamber 60, the exhaust passage of the other second compression chamber 60a communicates with the exhaust pipe.
Specifically, the first one-way bearing 3 is located on the left side of the rotor 21, the first compression mechanism part 5 is located on the left side of the motor 2, and the first compression mechanism part 5 includes a first crankshaft 51, at least one first cylinder, a first piston, and a first vane. The first crankshaft 51 is matched with the first one-way bearing 3, the rotor 21 drives the first crankshaft 51 to rotate in the forward direction through the first one-way bearing 3, two independent first compression chambers 50a are defined in the first compression mechanism part 5, each first compression chamber 50a is provided with an air suction port and an air exhaust port, the air exhaust ports of the two first compression chambers 50a are respectively communicated with an air exhaust pipe, so that each first compression chamber 50a sucks refrigerant through the respective air suction port, and after compression is completed, the refrigerant is exhausted through the respective air exhaust port of each first compression chamber 50 a.
The second one-way bearing 4 is located at the right side of the rotor 21, the second compression mechanism part 6 is located at the right side of the motor 2, and the second compression mechanism part 6 includes a second crankshaft 61, at least one second cylinder, a second piston, and a second vane. The second crankshaft 61 is matched with the second one-way bearing 4, the rotor 21 drives the second crankshaft 61 to rotate in the opposite direction through the second one-way bearing 4, and two communicated second compression chambers 60a are defined in the second compression mechanism part 6, so that the refrigerant completes first-stage compression in one of the second compression chambers 60a, flows into the other second compression chamber 60a to be subjected to second-stage compression, and is finally discharged through the exhaust pipe. Here, it should be noted that "forward rotation" and "reverse rotation" are relative concepts.
When the rotary compressor 100 is operated and the rotor 21 rotates forward, the rotor 21 drives the first crankshaft 51 to rotate forward to drive the first compression mechanism 5 to operate, at this time, the second crankshaft 61 does not rotate, the second compression mechanism 6 does not operate, the two first compression chambers 50a respectively compress the refrigerant therein independently, and after the compression is completed, the refrigerant is discharged into the housing 1 through respective exhaust ports of the two first compression chambers 50a and finally discharged through the exhaust pipe; when the rotary compressor 100 operates and the rotor 21 rotates reversely, the rotor 21 drives the second crankshaft 61 to rotate reversely to drive the second compression mechanism part 6 to operate, at this time, the first crankshaft 51 does not rotate, the first compression mechanism part 5 does not operate, the two second compression chambers 60a sequentially compress the refrigerant, and after the compression is completed, the refrigerant is discharged into the shell 1 through the exhaust passage of the second compression chamber 60a of the next stage and finally discharged through the exhaust pipe. Therefore, the rotary compressor 100 can perform independent compression or two-stage compression on the refrigerant by changing the rotation direction of the rotor 21 to change the compression mode of the rotary compressor 100, thereby better exerting the advantages of the independent compression and the two-stage compression.
When the rotary compressor 100 is applied to the refrigeration device 200, the rotary compressor 100 can change the compression mode of the rotary compressor 100 by changing the rotation direction of the rotor 21, so that the compression mode of the rotary compressor 100 can be switched according to the operation condition of the refrigeration device 200, and the compression mode of the rotary compressor 100 can well exert advantages to meet the energy efficiency requirement of the operation condition. Specifically, when the refrigeration device 200 is in the normal operating condition, the rotor 21 of the rotary compressor 100 may be adjusted to rotate in the forward direction, and at this time, the first compression mechanism 5 independently compresses the refrigerant and the second compression mechanism 6 does not operate, so that the energy efficiency of the refrigeration device 200 in the normal operating condition may be significantly improved; when the refrigerating apparatus 200 is in the ultra-low temperature heating operation condition or the ultra-high temperature refrigerating operation condition, the rotor 21 of the rotary compressor 100 may be adjusted to be rotated in the reverse direction, and the second compression mechanism 6 performs two-stage compression on the refrigerant, and the first compression mechanism 5 does not operate, so that the ultra-low temperature heating capability and the ultra-high temperature refrigerating capability of the refrigerating apparatus 200 may be improved.
According to the rotary compressor 100 of the embodiment of the invention, the one-way bearings are respectively arranged on the two sides of the rotor 21, so that when the rotation direction of the rotor 21 is changed, the operation states of the first compression mechanism part 5 and the second compression mechanism part 6 can be switched, thereby switching the compression mode of the rotary compressor 100, and when the rotary compressor 100 is applied to the refrigeration device 200, the energy efficiency requirements of each operation condition of the refrigeration device 200 can be better met.
In some embodiments of the present invention, the vane groove of at least one cylinder is configured as a working chamber having a variable internal pressure, and the working chamber defines the first compression chamber 50a or the second compression chamber 60 a. Thus, one cylinder may define two working chambers, i.e., one cylinder has two compression chambers, thereby reducing the number of cylinders and simplifying the structure of the rotary compressor 100.
For example, the vane groove of a first cylinder is configured as a working chamber, and the working chamber may define a closed first compression chamber 50a together with main bearings and auxiliary bearings located at both axial sides of the first cylinder, and the first compression chamber 50a is provided with an intake port and an exhaust port. Meanwhile, the cylinder cavity of the first cylinder defines another working chamber, so that another first compression chamber 50a is defined between the first cylinder and the first piston and the first sliding vane therein, that is, two first compression chambers 50a are provided in one first cylinder, and during the rotation of the first piston, the two first compression chambers 50a compress the refrigerant respectively and then discharge the compressed refrigerant through respective exhaust ports. Thus, the first compression mechanism portion 5 may have only one first cylinder. It will be appreciated that the working chamber may also define the first compression chamber 50a with two closure plates located axially on either side of the first cylinder, but is not limited thereto.
For another example, the vane groove of one second cylinder is configured as a working chamber, and the working chamber and the main bearing and the sub bearing located at both axial sides of the second cylinder together define a closed second compression chamber 60a, and the second compression chamber 60a is provided with an intake port and an exhaust port. Meanwhile, the cylinder cavity of the second cylinder defines another working chamber, so that another second compression chamber 60a is defined between the second cylinder and the second piston and the second sliding vane therein, that is, two second compression chambers 60a are provided in one second cylinder, and the two second compression chambers 60a are communicated with each other, and in the process of rotation of the second piston, the two second compression chambers 60a compress the refrigerant respectively in sequence and then discharge the refrigerant through the discharge passage of the second compression chamber 60a of the next stage. Thus, the second compression mechanism portion 6 may have only one second cylinder. It will be appreciated that the working chamber may also define the second compression chamber 60a with two closure plates located axially on either side of the second cylinder, but is not limited thereto.
Of course, it is also possible to have only one first compression chamber 50a in one first cylinder and only one second compression chamber 60a in one second cylinder, so that the first compression mechanism portion 5 has two first cylinders and the second compression mechanism portion 6 has two second cylinders.
In some alternative embodiments of the present invention, at least one of the first compression chambers 50a has a first supplementary port (not shown) so that the refrigerant may flow into the first compression chamber 50a through the first supplementary port and be mixed with the refrigerant flowing into the first compression chamber 50a from the suction port of the first compression chamber 50a, and the mixed refrigerant is compressed in the first compression chamber 50a and discharged from the discharge port of the first compression chamber 50 a. Thus, when the rotary compressor 100 is applied to the refrigeration apparatus 200, the energy efficiency of the refrigeration apparatus 200 may be significantly improved.
Further, each of the first compression chambers 50a is provided with a first gas supplement port so that the refrigerant may flow into the corresponding first compression chamber 50a through the first gas supplement port and be mixed with the refrigerant flowing into the first compression chamber 50a from the suction port of the corresponding first compression chamber 50a, and the mixed refrigerant is compressed in the first compression chamber 50a and discharged from the discharge port of the first compression chamber 50 a. Thereby, when the rotary compressor 100 is applied to the refrigeration apparatus 200, the energy efficiency of the refrigeration apparatus 200 may be further improved. Of course, the first supplementary ports of the two first compression chambers 50a may be not communicated with each other or with each other.
As shown in fig. 1, the second compression mechanism section 6 has a second air supply port 60b, and the second air supply port 60b communicates with the intake passage of the second compression chamber 60a of the next stage. Specifically, the second suction port 60b is located at the junction of the two second compression chambers 60a, so that the refrigerant can flow into the suction passage in the second compression chamber 60a through the second suction port 60b and be mixed with the refrigerant discharged from the discharge passage of the second compression chamber 60a of the upper stage to complete compression in the second compression chamber 60a of the lower stage. Accordingly, by providing the second air supplement port 60b communicating with the air intake passage of the second compression chamber 60a of the next stage, the refrigerant can be supplemented to the second compression chamber 60a of the next stage, thereby increasing the pressure ratio of the rotary compressor 100 and reducing the power consumption of the rotary compressor 100.
In the embodiment of the present invention, the exhaust pipe is one and is located between the two compression mechanism portions. Thus, by providing one discharge pipe between the first compression mechanism 5 and the second compression mechanism 6, the number of discharge pipes is reduced, and the structure of the rotary compressor 100 is simplified. It can be understood that the number of the exhaust pipes can be set to be a plurality according to actual conditions, and meanwhile, the positions of the exhaust pipes can also be set according to actual requirements.
The refrigerating apparatus 200 according to the second aspect of the present invention includes the rotary compressor 100 according to the above-described first aspect of the present invention. The refrigeration device 200 may be an air conditioner, but is not limited thereto.
For example, as shown in fig. 1 and 2, when the rotary compressor 100 is used for a refrigeration apparatus, at least one first compression chamber 50a may be provided with a first supplementary port, and the second compression mechanism part 6 may have a second supplementary port 60b communicating with a suction passage of the lower stage second compression chamber 60 a. The refrigeration apparatus 200 further includes a condenser, an evaporator, a primary throttle device, a secondary throttle device, and a gas-liquid separator. The rotary compressor 100 has an intake pipe and an exhaust pipe, the intake pipe is respectively communicated with the intake ports of the two first compression chambers 50a, and the intake pipe is communicated with the suction passage of the second compression chamber 60a of the upper stage of the two second compression chambers 60 a. The exhaust pipe is connected with a first end 101a of the condenser, a second end 101b of the condenser is connected with a first end 103a of the first-stage throttling device, a second end 103b of the first-stage throttling device is connected with a first end 105a of the gas-liquid separator, a second end 105b of the gas-liquid separator is connected with a first end 104a of the second-stage throttling device, a third end 105c of the gas-liquid separator is connected with an air supplementing port of the rotary compressor 100, a second end 104b of the second-stage throttling device is connected with a first end 102a of the evaporator, and a second end 102b of the evaporator is connected with an air inlet pipe of the rotary compressor 100. Here, the "air supply port" is a generic name of the first air supply port and the second air supply port 60 b.
Specifically, when the refrigeration apparatus 200 is operated in the normal operation, the third end 105c of the gas-liquid separator is connected to the first supplementary air port, and the rotor 21 rotates in the forward direction, so that the first compression mechanism 5 independently compresses the refrigerant and the second compression mechanism 6 does not operate. The refrigerant compressed by the first compression mechanism 5 becomes a high-temperature and high-pressure gas, is discharged through the exhaust pipe, flows into the condenser from the first end 101a of the condenser for heat exchange, becomes a high-pressure and high-temperature supercooled liquid, and flows into the primary throttling device from the first end 103a of the primary throttling device for throttling into a medium-pressure gas-liquid mixed state. The refrigerant in the gas-liquid mixed state is separated in the gas-liquid separator, so that the gaseous refrigerant and a small amount of liquid refrigerant flow out from the third end 105c of the gas-liquid separator and then flow into the first compression chamber 50a through the first gas supplementing port, while a large amount of liquid refrigerant flows out from the second end 105b of the gas-liquid separator, becomes a low-temperature and low-pressure gas-liquid mixed state after being throttled by the secondary throttling device and flows into the evaporator for heat exchange, and the refrigerant after heat exchange becomes low-temperature and low-pressure superheated gas, flows into the first compression chamber 50a through the gas inlet pipe, is mixed with the refrigerant flowing into the first compression chamber 50a through the first gas supplementing port, and is compressed into a high-temperature and high-pressure gaseous. Thereby, the energy efficiency of the refrigeration device 200 can be significantly improved.
When the refrigerating apparatus 200 is in the ultra-low temperature heating condition or the ultra-high temperature refrigerating condition, the third end 105c of the gas-liquid separator is connected to the second air supplement port 60b, at this time, the rotor 21 rotates in the reverse direction, the second compression mechanism 6 performs two-stage compression on the refrigerant and performs air supplement between the two-stage compression, and the first compression mechanism 5 does not operate. The refrigerant compressed by the second compression mechanism 6 becomes a high-temperature and high-pressure gas, is discharged through the exhaust pipe, flows into the condenser from the first end 101a of the condenser for heat exchange, becomes a high-pressure and high-temperature supercooled liquid, and flows into the primary throttling device from the first end 103a of the primary throttling device for throttling into a medium-pressure gas-liquid mixed state. The refrigerant in the gas-liquid mixed state is separated in the gas-liquid separator, so that the gaseous refrigerant and a small amount of liquid refrigerant flow out from the third end 105c of the gas-liquid separator and then flow into the second compression mechanism part 6 through the second air supplement port 60b, while a large amount of liquid refrigerant flows out from the second end 105b of the gas-liquid separator, becomes a low-temperature and low-pressure gas-liquid mixed state after being throttled by the two-stage throttling device, flows into the evaporator for heat exchange, becomes low-temperature and low-pressure superheated gas, flows into the second compression chamber 60a through the air inlet pipe, is mixed with the refrigerant flowing into the second compression mechanism part 6 through the second air supplement port 60b, and is sequentially compressed into the high-temperature and high-pressure gaseous refrigerant by the two communicated second compression chambers 60 a. This can improve the ultra-low-temperature heating capability and the ultra-high-temperature cooling capability of the refrigeration apparatus 200.
According to the refrigeration device 200 of the embodiment of the invention, by adopting the rotary compressor 100, the compression mode of the rotary compressor 100 can be switched according to the operation condition of the refrigeration device 200, so that the compression mode of the rotary compressor 100 can well exert advantages to meet the energy efficiency requirement of the operation condition, thereby obviously improving the energy efficiency of the refrigeration device 200 under each operation condition, and enabling the refrigeration device 200 to simultaneously have ultralow temperature heating capacity, ultrahigh temperature refrigeration capacity and high energy efficiency operation capacity under the conventional condition.
Other constructions and operations of the refrigeration apparatus 200 according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. A rotary compressor, comprising:
the shell is provided with an exhaust pipe;
the motor is arranged in the shell and comprises a rotor and a stator arranged on the shell, and two sides of the rotor are respectively provided with a one-way bearing;
the two compression mechanism parts are distributed on two sides of the motor and are respectively a first compression mechanism part and a second compression mechanism part, each compression mechanism part comprises a crankshaft, at least one cylinder, a piston and a slide sheet, each crankshaft is respectively matched with the one-way bearing on the same side, each crankshaft is matched with the corresponding one-way bearing and the rotor so that the rotation directions of the two crankshafts are opposite, each cylinder is provided with a cylinder cavity and a slide sheet groove, each cylinder cavity is internally provided with the piston which eccentrically rotates and is sleeved on the crankshaft, each slide sheet groove is internally provided with the slide sheet which reciprocates, the first compression mechanism part is provided with two first compression chambers, exhaust ports of the two first compression chambers are respectively communicated with the exhaust pipe, and the second compression mechanism part is provided with two second compression chambers, when the first compression mechanism part operates but the second compression mechanism part does not operate, the two first compression chambers respectively and independently compress the refrigerant in the two first compression chambers, and the compressed refrigerant is discharged into the shell through respective exhaust ports of the two first compression chambers and finally discharged by the exhaust pipe; when the second compression mechanism part operates and the first compression mechanism part does not operate, the two second compression chambers sequentially compress the refrigerant, and the compressed refrigerant is discharged into the shell through the exhaust passage of the lower-stage second compression chamber and finally discharged through the exhaust pipe.
2. The rotary compressor of claim 1, wherein the vane groove of at least one of the cylinders is configured as a working chamber having a variable internal pressure, the working chamber defining the first compression chamber or the second compression chamber.
3. The rotary compressor of claim 1, wherein at least one of the first compression chambers has a first air supplement port.
4. The rotary compressor of claim 3, wherein each of the first compression chambers is provided with the first supplementary gas port.
5. The rotary compressor of claim 1, wherein the second compression mechanism portion has a second air supplement port communicating with an air suction passage of the second compression chamber of the lower stage.
6. The rotary compressor of claim 1, wherein the discharge pipe is one and is located between the two compression mechanism portions.
7. A refrigerating device comprising the rotary compressor according to any one of claims 1 to 6.
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| CN201710642024.0A CN107191372B (en) | 2017-07-31 | 2017-07-31 | Rotary compressor and refrigerating device with same |
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| CN201710642024.0A CN107191372B (en) | 2017-07-31 | 2017-07-31 | Rotary compressor and refrigerating device with same |
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| CN107191372A CN107191372A (en) | 2017-09-22 |
| CN107191372B true CN107191372B (en) | 2021-07-06 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806412A (en) * | 2017-11-24 | 2018-03-16 | 安徽美芝精密制造有限公司 | Rotary compressor and there is its air-conditioning system |
| CN111120321A (en) * | 2018-10-31 | 2020-05-08 | 广东美芝制冷设备有限公司 | Compressor and refrigerating system |
| CN111207075A (en) * | 2020-02-10 | 2020-05-29 | 嘉兴学院 | Vortex air compressor |
| CN114060283B (en) * | 2021-12-08 | 2024-03-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor type compressor and air conditioner |
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| CN207004814U (en) * | 2017-07-31 | 2018-02-13 | 广东美芝制冷设备有限公司 | Rotary compressor and there is its refrigerating plant |
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| US6290472B2 (en) * | 1998-06-10 | 2001-09-18 | Tecumseh Products Company | Rotary compressor with vane body immersed in lubricating fluid |
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| US5022146A (en) * | 1989-08-30 | 1991-06-11 | Tecumseh Products Company | Twin rotary compressor with suction accumulator |
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| CN107191372A (en) | 2017-09-22 |
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