Low-pressure chamber rotary compressor and air conditioner

Abstract

A low pressure chamber rotary compressor and an air conditioner, the low pressure chamber rotary compressor includes a housing (100), a motor assembly, and a pump assembly. The housing (100) is provided with a low pressure intake member (120) and a high pressure exhaust member (130). A low pressure chamber (110) is provided within the housing (100). The motor assembly is provided within the low pressure chamber (110). The motor assembly includes a stator (231) and a rotor (232). ), and the pump assembly includes a crankshaft (210), a crankshaft casing (220), a cylinder (310), a piston (340), a sliding vane (330), and a bearing (320). The pump assembly is installed in the low pressure chamber (110), and the piston (340), the sliding vane (330), the cylinder (310), the bearing (320), and the crankshaft casing (220) are combined to form a compression chamber. The low pressure refrigerant directly cools the rotor (232) and the stator (231), and the low pressure refrigerant is heated and vaporized, and the temperature of the refrigerant in a gaseous state before compression increases. The cylinder (310), the bearing (320), and the sliding vane (330) installed in the low pressure chamber (110) are sufficiently cooled to minimize thermal expansion deformation. The piston (340) and the crankshaft (210) are disposed within the cylinder (310), and the internal heat cannot be effectively dissipated, resulting in large thermal expansion deformation. Therefore, the sealing performance between the cylinder (310) and the piston (340) can be effectively improved, thereby improving the compression effect of the refrigerant.

Description

[Technical Field]

[0001] The present invention relates to the field of compressors, and in particular to low-pressure chamber rotary compressors and air conditioners. [Background technology]

[0002] In everyday production and daily life, compressors can be classified into piston compressors, rotary compressors, and scroll compressors based on their operating principles. Rotary compressors are widely used and developed in the refrigeration industry due to their high energy efficiency and mature processing technology. However, existing rotary compressors have many drawbacks in their structure. Their motors constantly operate in high-temperature environments, which impact their motor lifespan and energy efficiency. Furthermore, the main pump body of a conventional rotary compressor is enclosed in a high-pressure chamber that stores high-pressure refrigerant. It contains many components (bearings, cylinders, crankshafts, pistons, sliding vanes), and the thermal deformation parameters of the materials of each component vary greatly. During the compression of low-pressure refrigerant, the components in the high-pressure chamber heat up and expand, increasing the sealing gap. This causes high-pressure gas to pass through the gap and enter the low-pressure chamber with each compression cycle, resulting in poor refrigerant compression efficiency. Summary of the Invention [Problem to be solved by the invention]

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a low-pressure chamber rotary compressor.

[0004] The present invention further provides an air conditioner equipped with the above-mentioned low-pressure chamber rotary compressor. [Means for solving the problem]

[0005] A low pressure chamber rotary compressor according to an embodiment of the first aspect of the present invention comprises: a housing having a low-pressure chamber filled with a low-pressure refrigerant, the housing having a low-pressure intake member for receiving the low-pressure refrigerant and a high-pressure exhaust member for discharging the high-pressure refrigerant; a motor assembly provided in the low-pressure chamber and including a stator, a rotor, and upper and lower balance weights; A pump assembly is provided in the low-pressure chamber, the pump assembly including a crankshaft, a crankshaft casing, a cylinder, a piston, a sliding vane, and a bearing, the piston, the sliding vane, the cylinder, the bearing, and the crankshaft casing are combined to form a compression chamber, the cylinder is provided with a sliding vane groove, the sliding vane is provided in the sliding vane groove, and the sliding vane, together with the piston, divides the compression chamber into a low-pressure region and a high-pressure region. Including, The crankshaft casing is provided with a low-pressure intake port, the pump assembly is provided with a cylinder intake hole and a high-pressure exhaust port, the position of the low-pressure intake port corresponds to the position of the low-pressure intake member, and the high-pressure exhaust port is connected to the high-pressure exhaust member; The crankshaft and the piston are disposed within the cylinder, and the cylinder, the bearing, and the sliding vane are disposed within the low-pressure chamber.

[0006] A low-pressure chamber rotary compressor according to an embodiment of the first aspect of the present invention has at least the following beneficial effects: a housing is provided with a low-pressure intake member and a high-pressure exhaust member, a low-pressure chamber is provided within the housing, a motor assembly is provided within the low-pressure chamber, the motor assembly includes a stator, a rotor, and upper and lower balance weights, a pump assembly is provided within the low-pressure chamber, the pump assembly includes a crankshaft, a crankshaft casing, a cylinder, a piston, sliding vanes, and bearings, the piston, the sliding vanes, the cylinder, the bearings, and the crankshaft casing are combined to form a compression chamber, the cylinder is provided with sliding vane grooves, the sliding vanes are provided in the sliding vane grooves, and the sliding vanes, together with the piston, divide the compression chamber into a low-pressure region and a high-pressure region. The crankshaft casing is provided with a low-pressure intake port, whose position corresponds to the position of the low-pressure intake member, allowing low-pressure refrigerant to be introduced directly into the rotor and stator inside the crankshaft casing, thereby directly cooling them. The motor assembly heats the low-pressure refrigerant, which is not fully vaporized, to vaporize it and raise the temperature of the refrigerant in its gaseous state before compression, thereby increasing the cooling coefficient and maximizing energy utilization. The motor assembly and pump assembly are located within the low-pressure chamber, while the crankshaft and piston are located within the cylinder. The cylinder, bearings, and sliding vanes are also located within the low-pressure chamber, and the cylinder, bearings, and sliding vanes are sufficiently cooled to minimize thermal expansion deformation. Because the piston and crankshaft are located within the cylinder, internal heat cannot be dissipated in a timely and effective manner, resulting in large thermal expansion deformation. This effectively improves the seal between the cylinder and piston, improving the refrigerant compression efficiency.

[0007] According to some embodiments of the present invention, the pump assembly is further connected to an oil separator for separating the lubricating oil and the refrigerant, the oil separator including a chamber, several separation baffles for separating oil and gas, an oil-gas separation air inlet provided in the chamber, an oil-gas separation air outlet provided in the chamber, and several oil traps provided below the chamber, the separation baffles being provided in the chamber, and the oil-gas separation air outlet being connected to the cylinder air inlet.

[0008] According to some embodiments of the present invention, the separation baffles include several first separation baffles and several second separation baffles arranged in the chamber, some of the first separation baffles are arranged on a lower side of the chamber, some of the second separation baffles are arranged on an upper side of the chamber, and the first separation baffles and the second separation baffles are arranged alternately in the chamber.

[0009] According to some embodiments of the present invention, several mounting buckles are provided above the chamber, and the crankshaft casing is provided with mounting holes corresponding to the mounting buckles, and the oil separator and the crankshaft casing are fixed by engagement of the mounting buckles with the mounting holes.

[0010] According to some embodiments of the present invention, the pump assembly further includes a silencer end cover, the silencer end cover is attached to the bearing, the silencer end cover is in communication with the high-pressure exhaust port, the silencer end cover is provided with an exhaust chamber, the exhaust chamber together with the bearing forms a high-pressure chamber, the exhaust chamber is provided with several partition plates, silencer notches are formed between the partition plates and the silencer end cover, and the silencer end cover is further provided with an end cover exhaust port for exhaust.

[0011] According to some embodiments of the present invention, the bearing is disposed between the cylinder and the silencer end cover, the bearing together with the cylinder forms a compression chamber, the bearing together with the silencer end cover forms a high-pressure chamber, the bearing is provided with several deformation grooves and an exhaust valve communicating the high-pressure chamber and the compression chamber, the deformation grooves are provided on the side of the bearing away from the cylinder so as to form a thin wall between the bearing and the cylinder.

[0012] According to some embodiments of the present invention, the high-pressure exhaust assembly includes an exhaust port provided in the housing, an exhaust mounting portion provided on one side of the exhaust port, an exhaust joint provided at the exhaust port, a high-pressure copper pipe attached to the exhaust mounting portion, and a seal member connecting and fixing the high-pressure copper pipe to the exhaust mounting portion, wherein the seal member and the high-pressure copper pipe are integrally molded, the exhaust mounting portion has an air vent groove connected to the exhaust port, and the seal member includes a seal head and a connecting bolt, and the seal head, together with the connecting bolt, fixes the high-pressure copper pipe to the exhaust mounting portion.

[0013] According to some embodiments of the present invention, the high-pressure copper tube is spirally arranged and connected to the high-pressure exhaust port, and the high-pressure copper tube is arranged around the pump assembly to provide intercooling for the high-pressure refrigerant.

[0014] According to some embodiments of the present invention, the crankshaft includes a shaft body and an eccentric portion provided on the shaft body, the eccentric portion being provided within the piston, and the eccentric portion being provided with an elastic deformation portion, the elastic deformation portion including a convex portion protruding outward and a deformation hole provided on a side wall of the convex portion.

[0015] According to some embodiments of the present invention, a connecting member is further provided between the pump and the housing, several mounting bosses are provided in the housing, several mounting positions are provided on the pump, several of the mounting bosses are uniformly distributed on the housing, and the connecting member is provided between the mounting bosses and the mounting positions and connects the pump and the housing.

[0016] According to some embodiments of the present invention, the bottom of the housing is recessed downward to form an oil storage pool, and the oil storage pool is filled with lubricating oil.

[0017] According to some embodiments of the present invention, an electrical control mounting portion is further provided on the outside of the housing, the electrical control mounting portion and the housing are integrally molded, the electrical control mounting portion and the housing form an electrical control mounting chamber, and a mounting hole position for mounting an electrical control member is provided at the bottom of the electrical control mounting chamber.

[0018] According to some embodiments of the present invention, an oil inlet groove is provided on the side of the crankshaft that fits into the crankshaft casing, and the oil inlet grooves are provided in plurality, and the plurality of oil inlet grooves are uniformly radially arranged on the crankshaft.

[0019] The inner end surface of the piston is provided with an end chamfer, the crankshaft casing is provided with an oil supply groove, the sliding vane is provided with an oil storage groove, and the side of the sliding vane that is bonded to the crankshaft casing is provided with an oil receiving chamfer.

[0020] An air conditioner according to an embodiment of the second aspect of the present invention includes the low-pressure chamber rotary compressor according to the embodiment of the first aspect.

[0021] The air conditioner according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: The air conditioner employs the low-pressure chamber rotary compressor of the embodiment of the first aspect, and can cool the motor assembly, and the motor assembly can heat and vaporize the low-pressure refrigerant that has not yet been fully vaporized, thereby increasing the temperature of the gaseous refrigerant before compression, thereby increasing the cooling coefficient and maximizing the effective utilization of energy; and the pump is disposed in the low-pressure chamber, which effectively improves the sealing between the cylinder and the piston and improves the compression effect of the refrigerant.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description that follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0024] [Figure 1] 1 is a cross-sectional view of a low-pressure chamber rotary compressor according to an embodiment of the present invention. FIG. [Figure 2] 2 is a cross-sectional view of the low-pressure chamber rotary compressor shown in FIG. 1 from another perspective. [Figure 3] FIG. 2 is a structural schematic diagram of the oil separator shown in FIG. [Figure 4] FIG. 4 is a structural schematic diagram of the oil separator shown in FIG. 3 from another perspective. [Figure 5] FIG. 4 is a structural principle diagram of oil-gas separation in the oil separator shown in FIG. 3. [Figure 6] FIG. 2 is a structural schematic diagram of the sound-absorbing end cover shown in FIG. [Figure 7] FIG. 2 is a structural schematic diagram of the bearing shown in FIG. [Figure 8] FIG. 8 is a cross-sectional view of the bearing shown in FIG. 7. [Figure 9]FIG. 2 is a structural schematic diagram of the crankshaft shown in FIG. [Figure 10] FIG. 2 is a structural schematic diagram of the sliding vane shown in FIG. 1. [Figure 11] FIG. 2 is a structural schematic diagram of the crankshaft casing shown in FIG. [Figure 12] 1 is a schematic diagram of an operating state of a pump assembly according to one embodiment of the present invention; [Figure 13] FIG. 13 is a cross-sectional view of the pump assembly shown in FIG. 12. [Figure 14] FIG. 14 is an enlarged view of a portion A in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0025] Hereinafter, the embodiments of the present invention will be described in detail. The drawings show the embodiments. Hereinafter, the same or similar reference numerals will be used to indicate the same or similar components or components having the same or similar functions. The embodiments described below with reference to the drawings are merely illustrative and are intended to explain the present invention, and should not be understood as limiting the present invention.

[0026] In the description of the present invention, the directions or positional relationships indicated by the directions such as "upper", "lower", "front", "rear", "left", "right", "outer", "inner" and the like are based on the directions or positional relationships shown in the drawings. Ku The above descriptions are merely for ease and simplification of the description of the invention and should not be taken as limiting the invention as they do not indicate or imply that the devices or elements referred to have a particular orientation or must be configured and operated in a particular orientation.

[0027] In the description of the present invention, "some" means one or more, "plurality" means two and more than two, "greater", "smaller", "more than", etc. are understood to be exclusive of the number itself, and "greater than", "less than", "within", etc. are understood to be inclusive of the number itself. The descriptions "first" and "second" are used merely to distinguish technical features and should not be understood to indicate or imply relative importance, or to suggest the number of technical features indicated, or to suggest the context of the technical features indicated.

[0028] In describing the present invention, unless otherwise clearly specified, terms such as providing, mounting, and connecting should be understood in a broad sense, and those skilled in the art can appropriately determine the specific meanings of the above-mentioned terms in the present invention according to the specific content of the technical solution.

[0029] A low-pressure chamber rotary compressor according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 14.

[0030] As shown in FIGS. 1 to 14 , a low-pressure chamber rotary compressor according to an embodiment of the present invention includes a housing 100, a motor assembly, and a pump assembly. The housing 100 includes a low-pressure chamber 110 filled with a low-pressure refrigerant. The housing 100 also includes a low-pressure intake member 120 for receiving the low-pressure refrigerant and a high-pressure exhaust member for discharging the high-pressure refrigerant. The low-pressure refrigerant enters the housing 100 from outside the housing 100 through the low-pressure intake member 120 and cools the pump inside the housing 100. The low-pressure refrigerant enters the pump and is compressed to become a high-pressure refrigerant. The high-pressure refrigerant is then discharged from the housing 100 through the high-pressure exhaust member. The pump is located within the low-pressure chamber 110. The motor assembly is located within the low-pressure chamber and includes a stator 231, a rotor 232, and upper and lower balance weights. The pump assembly is provided in the low-pressure chamber 110, and includes a crankshaft 210, a crankshaft casing 220, a cylinder 310, a piston 340, a sliding vane 330, and a bearing 320. The piston 340, the sliding vane 330, the cylinder 310, the bearing 320, and the crankshaft casing 220 are combined to form a compression chamber. The cylinder 310 is provided with a sliding vane groove, and the sliding vane 330 is provided in the sliding vane groove, and together with the piston 340, the sliding vane 330 divides the compression chamber into a low-pressure region and a high-pressure region. The crankshaft casing 220 is fitted onto the outside of the crankshaft 210. vinegar The stator 231 and the rotor 232 are mounted in a crankshaft casing 220. The crankshaft casing 220 is provided with a low-pressure intake port, and the pump assembly is provided with a cylinder intake hole and a high-pressure exhaust port, the position of the low-pressure intake port corresponds to the position of the low-pressure intake member 120, and the high-pressure exhaust port is connected to the high-pressure exhaust member, and the position of the low-pressure intake port corresponds to the position of the low-pressure intake member 120. The low-pressure refrigerant is pumped through the low-pressure intake port. MaterialThe low-pressure refrigerant in the housing 100 enters the pump through the low-pressure intake port 120 and cools the motor assembly in the pump. Specifically, the low-pressure refrigerant directly cools the stator 231 and rotor 232 through the low-pressure intake port, thereby ensuring the service life of the motor assembly. During the cooling process, the motor assembly heats and vaporizes the low-pressure refrigerant that is not fully vaporized so that all of the refrigerant is drawn into the pump assembly, thereby completely vaporizing the low-pressure refrigerant. This increases the temperature of the gaseous refrigerant before compression, increasing the cooling coefficient and maximizing the effective utilization of energy. The pump assembly includes a crankshaft 210, a crankshaft casing 220, a cylinder 310, a piston 340, a sliding vane 330, and a bearing 320. The crankshaft 210 and the piston 340 are located within the cylinder 310. R The cylinder 310, bearing 320 and sliding vane 330 are provided in the low pressure chamber 110. R The low-pressure chamber 110 is filled with a low-pressure refrigerant, and the low-pressure refrigerant can cool the cylinder 310, the bearing 320, and the sliding vane 330 in the low-pressure chamber 110. bearing The piston 320 and the sliding vane 330 are sufficiently cooled to minimize thermal expansion deformation. The piston 340 and the crankshaft 210 are installed in the cylinder 310, and the internal heat cannot be dissipated in a timely and effective manner, resulting in large thermal expansion deformation. Therefore, the sealing between the cylinder 310 and the piston 340 can be effectively improved, thereby improving the refrigerant compression effect.

[0031] The low-pressure refrigerant passes through the low-pressure intake member 120 and enters the low-pressure chamber 110 in the housing 100. ofThe gaseous refrigerant mixes with some of the lubricating oil in the housing 100, and in order to make the most of the refrigerant compression space each time, it is necessary to separate as much oil mist as possible from the gaseous refrigerant before the gaseous refrigerant is sucked into the cylinder 310 and compressed. The pump assembly is provided with an oil separator 360, which can effectively separate the oil mist and the gaseous refrigerant, allowing the oil mist to settle and separate before being discharged into the oil pool, ensuring that both the lubricating oil and the refrigerant can be fully utilized.

[0032] In some embodiments, the pump assembly is further connected to an oil separator 360 for separating the lubricating oil and the refrigerant, the oil separator 360 including a chamber 361, several separation baffles for separating the oil and gas, an oil-gas separation inlet 364 provided in the chamber 361, and an oil-gas separation outlet 365 provided in the chamber 361. 365 and several oil drains located below chamber 361. Hole 3 66. The separation baffle is provided in the chamber 361. The oil / gas separation outlet 365 is connected to the intake port of the cylinder 310. The oil separator 360 includes the chamber 361, the separation baffle, the oil / gas separation intake port 364, the oil / gas separation outlet 365, and the oil drop. Hole 3 66. The oil-gas mixture enters the chamber 361 through the oil-gas separation inlet 364, and several separation baffles are installed in the chamber 361, which can block oil mist. Hole 3 66 is installed, and the oil mist settles after being blocked, and the oil falls off. Hole 3 The refrigerant flows out from 66 and into the oil pool. The oil-gas separation exhaust port 365 is connected to the intake port of the cylinder 310, and the gaseous refrigerant separated from the oil mist flows from the oil-gas separation exhaust port 365 into the intake port of the cylinder 310, and is finally sucked into the cylinder 310 and compressed.

[0033] Specifically, in some embodiments, the separation baffles include several first separation baffles 362 and several second separation baffles 363 arranged in the chamber 361, some of the first separation baffles 362 are arranged on the lower side of the chamber 361, some of the second separation baffles 363 are arranged on the upper side of the chamber 361, and the first separation baffles 362 and the second separation baffles 363 are arranged alternately in the chamber 361. The first separation baffles 362 are arranged on the upper side of the chamber 361, and the second separation baffles 363 are arranged on the lower side of the chamber 361, and the first separation baffles 362 and the second separation baffles 363 are arranged alternately up and down, thereby strengthening the blocking effect against oil mist and further improving the separation effect. Several first separation baffles 362 and several second separation baffles 363 are provided, but in actual manufacturing, the number of first separation baffles 362 and second separation baffles 363 may be adjusted as needed, and it can be understood that the greater the number of first separation baffles 362 and second separation baffles 363, the greater the blocking and separation effect on oil mist.

[0034] In some embodiments, several mounting buckles 367 are provided above the chamber 361, and the crankshaft casing 220 has mounting holes corresponding to the mounting buckles 367, so that the oil separator and the crankshaft casing 220 are fixed by engaging the mounting buckles 367 with the mounting holes. The cylinder 310 is fitted to the crankshaft casing 220. The oil separator 360 is covered on the outside of the cylinder 310, and the oil-gas separation outlet 365 of the oil separator 360 is connected to the intake port of the cylinder 310. Specifically, several mounting buckles 367 are provided in the chamber 361, and the crankshaft casing 220 has mounting holes corresponding to the mounting buckles 367, so that the oil separator and the crankshaft casing 220 are fixed by engaging the mounting buckles 367 with the mounting holes. In this way, the oil separator is fixed. Several mounting buckles 367 are provided, and the number of mounting holes corresponds to the number of mounting buckles 367. The number of mounting buckles 367 and mounting holes can be set to one, two, three or more according to actual installation needs. The more mounting buckles 367 and mounting holes there are, the more stable the connection between the oil separator and the crankshaft casing 220. In some other embodiments, mounting holes are provided in the chamber 361, and mounting buckles 367 are provided in the crankshaft casing 220. This allows the oil separator 360 and Crankshaft casing 220 can be assembled and fixed in the same way. Note that chamber 361 may be fixed to crankshaft casing 220 by other connection methods such as a screw connection, which is also within the scope of protection of the present invention. Furthermore, chamber 361 of oil separator 360 is annular, and the annular chamber 361 can cover cylinder 310, thereby increasing the travel distance of the oil-gas mixture in chamber 361 and further improving the separation effect.

[0035] In some embodiments, the pump assembly further includes a silencer end cover 350, which is attached to the bearing 320. The silencer end cover 350 communicates with the high-pressure exhaust port, and the silencer end cover 350, together with the bearing 320, form a high-pressure chamber 351. The silencer end cover 350 is provided with an exhaust chamber 352, which is provided with several partition plates 353, and a silencer notch 354 is formed between the partition plate 353 and the silencer end cover 350. The silencer end cover 350 is further provided with an end cover exhaust port for exhaust. The pump assembly is provided with the silencer end cover 350 for sealing, which is attached to the bearing 320. The silencer end cover 350 is provided with an exhaust chamber 352, which, together with the bearing 320, form a high-pressure chamber 351. The compressed high-pressure refrigerant flows into the high-pressure chamber 351 and into the exhaust chamber 352. The exhaust chamber 352 is provided with several partition plates 353, and sound-absorbing notches 354 are formed between the partition plates 353 and the silencing end cover 350. The partition plates 353 divide the exhaust chamber 352 into several different chambers. The high-pressure refrigerant flows through the sound-absorbing notches 354 between the different chambers and is finally discharged through the exhaust port of the end cover. The cross-sectional areas of the sound-absorbing notches 354 and the exhaust chamber 352 are different. The high-pressure refrigerant flows into the large-cross-sectional area exhaust chamber 352 through the small-cross-sectional area silencing notches 354, which effectively reduces the noise generated when the high-pressure refrigerant flows through the silencing end cover 350, achieving sound absorption and noise reduction. Several partition plates 353 may be provided, and several partition plates 353 may be provided in the exhaust chamber 352 to divide the exhaust chamber 352 into multiple chambers, thereby improving the sound deadening and noise reduction function.

[0036] In some embodiments, bearing 320 is disposed between cylinder 310 and silencer end cover 350, and bearing 320, together with cylinder 310, forms a compression chamber. Bearing 320, together with silencer end cover 350, forms a high-pressure chamber 351. Bearing 320 is provided with several deformed grooves 322 and an exhaust valve 321 for communicating the high-pressure chamber 351 with the compression chamber. Deformed grooves 322 are provided on the side of bearing 320 away from cylinder 310 so that a thin wall 323 is formed between bearing 320 and cylinder 310. To facilitate close contact between cylinder 310 and silencer end cover 350 and improve sealing, two surfaces of bearing 320 that come into contact with cylinder 310 and silencer end cover 350 are provided as polished surfaces. The bearing 320 is disposed between the cylinder 310 and the silencer end cover 350. One side of the bearing 320, together with the cylinder 310, forms a compression chamber, and the other side, together with the silencer end cover 350, forms a high-pressure chamber 351. The bearing 320 is provided with an exhaust valve 321 that connects the compression chamber with the high-pressure chamber 351. Low-pressure refrigerant flows into the compression chamber and is compressed to become high-pressure refrigerant. The high-pressure refrigerant passes through the exhaust valve 321 into the high-pressure chamber 351 and is finally discharged from the high-pressure chamber 351. The bearing 320 is provided with several deformation grooves 322, which are disposed on the side of the bearing 320 away from the cylinder 310. The formation of the deformation grooves 322 forms a thin wall 323 between the bearing 320 and the cylinder 310. When the high-pressure refrigerant flows into the high-pressure chamber 351, it applies pressure to the bearing 320 on the deformation groove 322 side, and the thin wall 323 is often deformed toward the lower pressure side when subjected to high pressure, i.e., the thin wall 323 of the bearing 320 is deformed under pressure from the high-pressure refrigerant and abuts against the cylinder 310 and the piston 340, thereby minimizing the fitting gap between the end faces of the bearing 320 and the piston 340 and improving the sealing effect of the bearing 320 against the cylinder 310 and the piston 340. The positions and number of the deformation groove 322 and the thin wall 323 may be set according to the actual sealing effect, and are within the scope of protection of the present invention.

[0037] In some embodiments, the high-pressure exhaust assembly includes an exhaust port 131 provided in the housing 100, an exhaust fitting provided on one side of the exhaust port 131, an exhaust joint 132 provided in the exhaust port 131, a high-pressure copper pipe 136 attached to the exhaust fitting, and a seal member for connecting and fixing the high-pressure copper pipe 136 to the exhaust fitting. The seal member and the high-pressure copper pipe 136 are molded as a single unit. The exhaust fitting is provided with a ventilation groove 133 connected to the exhaust port 131. The seal member includes a seal head 135 and a connecting bolt 134, and the seal head 135, together with the connecting bolt 134, fixes the high-pressure copper pipe 136 to the exhaust fitting. The housing 100 is provided with the exhaust port 131, and the exhaust port 131 is provided with an exhaust joint 132 for connecting to an external exhaust pipe. The exhaust joint 132 is capable of discharging high-pressure refrigerant. An exhaust attachment part is provided on one side of the exhaust port 131, and a ventilation groove 133 is formed in the hollow part inside the exhaust attachment part. Shi The screw member includes a seal head 135 and a connecting bolt 134, and the connecting bolt 134, together with the seal head 135, sealably attaches the high-pressure copper pipe 136 to the exhaust fitting. The threaded connection facilitates assembly and is suitable for line assembly work. The high-pressure copper pipe 136 may be fixedly connected to the exhaust fitting by other connection means, such as welding. In some embodiments, the high-pressure copper pipe 136 is spirally wound and connected to the high-pressure exhaust port. The high-pressure copper pipe 136 is wound around the pump assembly to provide intercooling for the high-pressure refrigerant. The spirally wound high-pressure copper pipe 136 is wound around the low-pressure chamber 110. The spirally wound high-pressure copper pipe 136 buffers and resists bending fatigue, making the connection more stable. The high-pressure copper tube can act as an intercooler to intermediately cool the high-pressure refrigerant, not only playing the role of heat recovery, but also reducing the pressure of the external condenser, preheating the gas returning from the evaporator, raising the intake air temperature, and increasing the cooling coefficient.

[0038] In some embodiments, crankshaft 210 includes shaft body 211 and eccentric portion 212 provided on shaft body 211. Eccentric portion 212 is provided within piston 340, and eccentric portion 212 is provided with an elastically deformable portion, which includes protrusion 213 protruding outward and deformation hole 214 provided on a side wall of protrusion 213. Eccentric portion 212 of crankshaft 210 is provided within piston 340, and piston 340 is provided between eccentric portion 212 and cylinder 310. Eccentric portion 212 is provided with an elastically deformable portion, which includes protrusion 213 and deformation hole 214 provided on a side wall of protrusion 213. The protrusion 213 is the highest point of the eccentric portion 212. The protrusion 213 protrudes outward and fits into the inner surface of the piston 340, moving and rotating the piston 340 and sealing the outer surface of the piston 340 against the inner surface of the cylinder 310, compressing the refrigerant. When the gap between the piston 340 and the cylinder 310 is large, the elastically deformable hole 214 elastically deforms outward to support the piston 340, reducing the gap between the outer surface of the piston 340 and the inner surface of the cylinder 310. When there is no gap or the gap is small between the piston 340 and the cylinder 310, the elastically deformable hole 214 deforms inward under pressure, preventing the outer surface of the piston 340 from getting caught on the inner surface of the cylinder 310 during operation. The provision of the elastically deformable portion reduces the gap between the piston 340 and the cylinder 310, improving the sealing effect and thereby increasing the compression effect.

[0039] In some embodiments, a connecting member 141 is further provided between the pump and the housing 100, several mounting bosses 140 are provided in the housing 100, several mounting positions 142 are provided on the pump, several mounting bosses 140 are uniformly distributed on the housing 100, and the connecting member 141 is provided between the mounting bosses 140 and the mounting positions 142, and the pump and Housing 100The housing 100 includes several mounting bosses 140, and the pump includes several mounting positions 142. The positions and number of the mounting bosses 140 correspond to the positions and number of the mounting positions 142. A connecting member is provided between the mounting bosses 140 and the mounting positions 142 to connect the pump to the housing 100. Since several mounting bosses 140 and mounting positions 142 are provided and uniformly spaced around the crankshaft 210, the pump can be secured from multiple positions, enhancing the securing effect of the pump. Specifically, in some embodiments, the connecting member 141 is an elastic connecting member, such as a support spring or gas spring, connecting the pump to the housing 100. The elastic connecting member can buffer vibrations, effectively preventing compressor vibrations from being directly transmitted to the housing during high-speed rotation and generating noise, ensuring smooth operation of the compressor. In some embodiments, the connecting member 141 is a fixed connecting member. By connecting the compressor pump and the housing 100 with a fixed connecting member, the distance between the compressor pump and the housing 100 is relatively fixed and no collision occurs, and the relative position of the compressor pump in various conditions is fixed and does not shake, which is suitable for equipment that requires displacement and has a large displacement range.

[0040] In some embodiments, the bottom of the housing 100 is recessed downward to form an oil reservoir 150. 0 The housing 100 is filled with lubricating oil. An oil storage pool 150 is provided at the bottom of the housing 100, and the oil storage pool 150 can store lubricating oil. The lubricating oil can serve as a lubricant and form a protective film between the components to prevent direct contact between the components, thereby buffering the action of frictional force, reducing wear, and extending the service life of the pump.

[0041] In some embodiments, an electrical control mounting portion 160 is further provided on the outside of the housing 100, and the electrical control mounting portion 160 and the housing 100 are molded integrally. The electrical control mounting portion 160 and the housing 100 form an electrical control mounting chamber 161. A mounting hole position for mounting an electrical control member is provided at the bottom of the electrical control mounting chamber 161. The electrical control mounting portion 160 is provided on the outside of the housing 100, and the electrical control mounting portion 160 and the housing 100 are molded integrally. A low-pressure chamber 110 is provided inside the housing 100, and a pressure gap is provided between the electrical control mounting chamber 161 of the electrical control mounting portion 160 and the low-pressure chamber 110 of the housing 100. housing 100 thickness, the heat in the electrical control mounting chamber 161 can be transferred quickly and efficiently to the low temperature refrigerant in the low pressure chamber 110. Installation The heat of the electrical control mounting chamber 161 can also promote sufficient evaporation of the refrigerant. In some embodiments, the housing 100 is made of an aluminum alloy. Aluminum alloys have good thermal conductivity, and the electrical control mounting chamber 161 and the low-pressure chamber 161 can be cooled and dissipated. - 110. Aluminum is easy to process and form, and can be obtained in a required shape and structure at low processing cost.

[0042] In some embodiments, an oil inlet groove 215 is provided on the side of crankshaft 210 closer to crankshaft casing 220, and a plurality of oil inlet grooves 215 are provided, and the plurality of oil inlet grooves 215 are uniformly arranged radially on crankshaft 210. An end chamfer is provided on the inner end surface of piston 340, an oil supply groove 216 is provided in crankshaft casing 220, an oil storage groove 331 is provided in sliding vane 330, and an oil receiving chamfer 332 is provided on the side of sliding vane 330 that is bonded to crankshaft casing 220. Crankshaft 210 is provided with pumping blades 217. As crankshaft 210 rotates, the lubricating oil in oil storage pool 150 is pumped into the center hole of crankshaft 210 by the action of the spiral structure of pumping blades 217. Centrifugal force then causes the oil to pass through oil injection grooves 215 provided in crankshaft 210 and be injected into areas requiring lubrication, thereby achieving lubrication of the pump structure. Sliding vane 330 is provided with oil storage grooves 331 and oil receiving chamfers 332. Lubricating oil enters the sliding vane through oil receiving chamfers 332 to lubricate the sliding vane. The oil storage groove 331 allows lubricating oil to be stored on the low-pressure side of sliding vane 330 and discharged into low-pressure chamber 110 during linear movement of sliding vane 330. Specifically, an oil supply groove 216 is provided on the bottom surface of crankshaft casing 220, a chamfer is provided on piston 340, and oil inlet groove 215, oil supply groove 216, and the chamfer form an oil passage that can automatically open and close according to the movement trajectory of the rotor as it rotates. Lubricating oil at the center of crankshaft 210 is injected from oil inlet groove 215 by the action of centrifugal force, and piston 340 is provided on the outside of crankshaft 210, and the lubricating oil injected from oil inlet groove 215 passes through the chamfer on the end surface of piston 340 and enters oil supply groove 216 of crankshaft casing 220.The oil passage allows the lubricating oil to flow into one side of the low-pressure chamber to sufficiently lubricate the sliding vane 330 and piston 340. The reciprocating motion of the sliding vane 330 then effectively discharges the lubricating oil from the low-pressure chamber 110 and into the oil storage pool, realizing lubricating oil circulation. This ensures that the lubricating oil in each lubrication part circulates effectively between the working parts and the oil storage pool to provide lubrication, and forms an effective seal oil film in each assembly gap.

[0043] The lubricating oil circulation includes a lubricating circuit for the gas compression chamber, a lubricating circuit for the low pressure side of the sliding vane and the upper and lower end faces of the piston, a lubricating circuit for the high pressure side of the sliding vane, and a lubricating circuit for the bearing 320 and the crankshaft. 210 The lubricating oil circulation is specifically as follows:

[0044] The lubrication circuit of the gas compression chamber includes the following steps: First, the crankshaft 210 Oil pumping is performed on the crankshaft 210 The lubricating oil in the center of the cylinder 310 is injected from the oil injection groove 215 by the action of centrifugal force, and the lubricating oil flows through the oil supply groove 216 by the action of centrifugal force into the intake low-pressure chamber between the outer diameter of the cylinder 310 and the piston 340. The lubricating oil is transferred to the high-pressure compression chamber inside the cylinder 310 during compressor operation, and there is a pressure difference between the high-pressure compression chamber and the external low-pressure chamber 110, and the lubricating oil is discharged into the low-pressure chamber 110 by the pressure difference. The lubricating oil discharged into the low-pressure chamber 110 falls into the oil storage pool 150 at the bottom of the housing and finally reaches the crankshaft. 210 The countershaft oil hole draws oil from the oil storage pool 150 and pumps it to the crankshaft 210 The oil pumping is achieved, and finally the lubricating oil circulation of the gas compression chamber lubrication circuit is completed.

[0045] The lubrication circuit for the low pressure side of the sliding vane and the upper and lower end faces of the piston includes the following steps: First, the crankshaft 210 Oil is pumped in the low-pressure chamber 110, and the lubricating oil passes through the oil supply groove 216 and enters the low-pressure upper surface of the sliding vane 330. The sliding vane 330 moves linearly, and the lubricating oil enters the low-pressure side of the sliding vane 330 from the low-pressure upper surface of the sliding vane 330. When the refrigerant is compressed to the intermediate pressure, the lubricating oil on the low-pressure side is discharged due to the pressure difference with the external low pressure and returns to the low-pressure chamber 110. The lubricating oil discharged into the low-pressure chamber 110 falls into the oil storage pool 150 at the bottom of the housing and finally reaches the crankshaft. 210 The countershaft oil hole draws oil from the oil storage pool 150 and pumps it to the crankshaft 210 This achieves oil pumping, and finally completes the lubricating oil circulation in the lubricating circuits on the low pressure side of the sliding vane and the upper and lower cross sections of the piston.

[0046] The sliding vane high pressure side lubrication circuit includes the following steps: First, the crankshaft 210 The oil is pumped through the oil supply groove 216 and enters the high-pressure surface of the sliding vane 330. When the refrigerant is compressed to a high pressure, the lubricating oil on the high-pressure surface is discharged by the pressure difference and returns to the low-pressure chamber 110. The lubricating oil discharged into the low-pressure chamber 110 falls into the oil storage pool 150 at the bottom of the housing and finally reaches the crankshaft. 210 The countershaft oil hole draws oil from the oil storage pool 150 and pumps it to the crankshaft 210 This achieves oil pumping and finally completes the lubricating oil circulation in the lubricating circuit on the high pressure side of the sliding vane.

[0047] Bearing 320 and crankshaft 210 The lubrication circuit between the two includes the following steps: First, the crankshaft 210 The oil pumping is performed to deliver lubricating oil to the crankshaft 210 through the oil hole of the crankshaft 210and into the inner diameter of the bearing 320. The lubricating oil enters the low-pressure chamber 110 through a spiral oil groove. The lubricating oil drains into the low-pressure chamber 110 and falls into the oil storage pool 150 at the bottom of the housing, and eventually onto the crankshaft. 210 The countershaft oil hole draws oil from the oil storage pool 150 and pumps it to the crankshaft 210 of oil pumping, and finally bearing 320 and crankshaft 210 The lubricating oil circulation in the lubrication circuit between

[0048] Through the above-mentioned circulation of lubricating oil, the lubricating oil at each lubrication position can effectively circulate and lubricate between the operating parts and the oil storage pool 150, and an effective seal oil film can be formed in each assembly gap, realizing the circulation of lubricating oil, and the pump assembly can: vinegar This allows for smoother operation and extends the useful life of the pump assembly.

[0049] The present invention further provides an air conditioner including the low-pressure chamber rotary compressor according to the above embodiment. The air conditioner employs the low-pressure chamber rotary compressor according to the above embodiment, and can cool the motor assembly. The motor assembly can heat and vaporize the low-pressure refrigerant that is not fully vaporized, thereby increasing the temperature of the refrigerant in a gaseous state before compression, thereby increasing the cooling coefficient and maximizing the effective utilization of energy. The pump is disposed within the low-pressure chamber 110, effectively improving the sealing between the cylinder 310 and the piston 340 and improving the compression efficiency of the refrigerant.

[0050] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the above embodiments, and various modifications are possible within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A low-pressure chamber rotary compressor, comprising: a housing having a low-pressure chamber filled with a low-pressure refrigerant, the housing having a low-pressure intake member for receiving the low-pressure refrigerant and a high-pressure exhaust member for discharging the high-pressure refrigerant; a motor assembly provided in the low-pressure chamber and including a stator, a rotor, and upper and lower balance weights; a pump assembly provided within the low-pressure chamber, the pump assembly including a crankshaft, a crankshaft casing, a cylinder, a piston, a sliding vane, and a bearing, the piston, the sliding vane, the cylinder, the bearing, and the crankshaft casing being combined to form a compression chamber, the cylinder being provided with a sliding vane groove, the sliding vane being provided in the sliding vane groove, and the sliding vane, together with the piston, dividing the compression chamber into a low-pressure region and a high-pressure region; Including, The crankshaft casing is provided with a low-pressure intake port, the pump assembly is provided with a cylinder intake hole and a high-pressure exhaust port, the position of the low-pressure intake port is aligned with the position of the low-pressure intake member, and the high-pressure exhaust port is connected to the high-pressure exhaust member; the motor assembly is disposed within the pump assembly; the low-pressure refrigerant passes through the low-pressure intake member into the housing, and the low-pressure refrigerant in the housing passes through the low-pressure intake port into the pump assembly to cool the motor assembly in the pump assembly; A low-pressure chamber rotary compressor, characterized in that the crankshaft and the piston are provided in the cylinder, and the cylinder, the bearing, and the sliding vane are provided in the low-pressure chamber.

2. The low-pressure chamber rotary compressor of claim 1, characterized in that the pump assembly is further connected to an oil separator for separating lubricating oil and refrigerant, the oil separator including a chamber, several separation baffles for separating oil and gas, an oil-gas separation air inlet provided in the chamber, an oil-gas separation exhaust port provided in the chamber, and several oil traps provided below the chamber, the separation baffle is provided in the chamber, and the oil-gas separation exhaust port is connected to the cylinder air inlet.

3. 3. The low-pressure chamber rotary compressor according to claim 2, wherein the separation baffles include several first separation baffles and several second separation baffles arranged in the chamber, some of the first separation baffles are arranged on the lower side of the chamber, some of the second separation baffles are arranged on the upper side of the chamber, and the first separation baffles and the second separation baffles are arranged alternately in the chamber.

4. The low-pressure chamber rotary compressor according to claim 2, characterized in that several mounting buckles are provided above the chamber, and the crankshaft casing is provided with mounting holes corresponding to the mounting buckles, and the oil separator and the crankshaft casing are fixed by engaging the mounting buckles with the mounting holes.

5. The low-pressure chamber rotary compressor according to claim 1, characterized in that the crankshaft includes a shaft body and an eccentric portion provided on the shaft body, the eccentric portion is provided within the piston, the eccentric portion is provided with an elastic deformation portion, and the elastic deformation portion includes a convex portion protruding outward and a deformation hole provided on a side wall of the convex portion.

6. 2. The low-pressure chamber rotary compressor according to claim 1, further comprising a connecting member between the pump assembly and the housing, wherein several mounting bosses are provided in the housing, several mounting positions are provided on the pump assembly, several mounting bosses are uniformly arranged on the housing, and the connecting member is provided between the mounting bosses and the mounting positions and connects the pump assembly and the housing.

7. 2. The low-pressure chamber rotary compressor according to claim 1, wherein the bottom of the housing is recessed downward to form an oil storage pool, and the oil storage pool is filled with lubricating oil.

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