CN107061275B - Slip sheet of rotary compressor, rotary compressor with slip sheet and vehicle - Google Patents
Slip sheet of rotary compressor, rotary compressor with slip sheet and vehicle Download PDFInfo
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- CN107061275B CN107061275B CN201710054967.1A CN201710054967A CN107061275B CN 107061275 B CN107061275 B CN 107061275B CN 201710054967 A CN201710054967 A CN 201710054967A CN 107061275 B CN107061275 B CN 107061275B
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- coating
- rotary compressor
- slip sheet
- crankshaft
- sliding vane
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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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
- F04C2230/00—Manufacture
- F04C2230/90—Improving properties of machine parts
- F04C2230/91—Coating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a slip sheet of a rotary compressor, the rotary compressor with the slip sheet and a vehicle, wherein the slip sheet of the rotary compressor comprises a body, a first coating and a second coating, the first coating is arranged at the front end of the body, the second coating is arranged on the end surface of the low-pressure side of the slip sheet, the length L of the second coating is more than or equal to 2e in the moving direction of the slip sheet, the height of the first coating and the height of the second coating are respectively the same as the height of the body in the height direction of the slip sheet, the first coating and the second coating are respectively DLC coatings, the end surface of the slip sheet adjacent to an air suction port is the end surface of the low-pressure side, and the eccentricity of a crankshaft is e. The sliding vane of the rotary compressor ensures that the abrasion resistance can meet the use requirement of engineering technology and the lateral tightness in the movement process, and reduces the manufacturing cost and the difficulty of process production.
Description
Technical Field
The invention relates to the field of refrigeration, in particular to a sliding vane of a rotary compressor, and the rotary compressor and a vehicle with the sliding vane.
Background
The conventional refrigerants such as R22, R134a and R410A gradually exit the history stage because the refrigerants do not meet the environmental protection requirement. For example, when the conventional R22(GWP1700) refrigerant 3.5KW water heater works for 1000 hours per year, the power consumption of the water heater is reduced to CO per year2The discharge amount is about 580 Kg; however, the water heater is filled with 1.1kg of CO converted from R22 refrigerant2The discharge amount is about 1800Kg, and the carbon emission caused by using the environment-friendly refrigerant in the air conditioner and the water heater in the related art is equivalent to the total pollution caused by the power consumption of the product which is used for 3.5 years. The use of environmentally-friendly refrigerants is a main pollution source of the whole life cycle of the refrigeration household appliance.
CO2CO of natural working medium adopted by refrigerant refrigerating system2The refrigerant comes from nature and is the most environment-friendly ultimate refrigerant. But CO2The pressure is high, which causes high manufacturing cost of the product and difficult popularization. CO 22The biggest development point of the compressor is the development of a sliding vane which bears heavy load and runs at high speed.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention provides the sliding vane of the rotary compressor, which ensures that the abrasion resistance can meet the use requirement of engineering technology and the lateral tightness in the movement process, and reduces the manufacturing cost and the difficulty of process production.
The invention also provides a rotary compressor which comprises the sliding vane.
The invention further provides a vehicle comprising the rotary compressor.
A vane of a rotary compressor according to an embodiment of the present invention includes: the crankshaft sliding vane comprises a body, a first coating and a second coating, wherein the first coating is arranged at the front end of the body, the second coating is arranged on the end face of the low-pressure side of the sliding vane, the length L of the second coating is more than or equal to 2e in the moving direction of the sliding vane, the height of the first coating and the height of the second coating are respectively the same as the height of the body in the height direction of the sliding vane, the first coating and the second coating are respectively DLC coatings, the end face of the sliding vane adjacent to an air suction port is the end face of the low-pressure side, and the eccentricity of the crankshaft is e.
According to the sliding sheet provided by the embodiment of the invention, the first coating is arranged at the front end of the body, the second coating is arranged on the end surface at the low-pressure side, and the length L of the second coating is more than or equal to 2e, so that the abrasion resistance of the sliding sheet is ensured to meet the use requirements of engineering technology and the side tightness of the sliding sheet in the motion process, and the manufacturing cost and the process production difficulty of the sliding sheet are reduced.
According to some real-time exchange rates of the present invention, the area of the second coating is less than 60% of the area of the low pressure side end face.
A rotary compressor according to an embodiment of the present invention includes: the air suction device comprises a shell, wherein an exhaust pipe and an air suction pipe are arranged on the shell; the motor is arranged in the shell and comprises a stator and a rotor; the pump body assembly is arranged in the shell and comprises an air cylinder, a piston, a sliding vane, a crankshaft and a main bearing, an air cylinder cavity, an air exhaust port, an air suction port and a sliding vane groove are formed in the air cylinder, the piston is sleeved on the crankshaft and arranged in the air cylinder cavity, the sliding vane is arranged in the sliding vane groove, the front end of the sliding vane abuts against the piston, and the sliding vane is the sliding vane of the rotary compressor according to the embodiment of the invention.
According to the rotary compressor provided by the embodiment of the invention, the sliding sheet provided by the embodiment of the invention is arranged, so that the abrasion resistance of the sliding sheet can meet the use requirement of engineering technology and the side tightness of the sliding sheet in the motion process, and the manufacturing cost and the difficulty of process production of the compressor are further reduced.
Further, the rotary compressor further comprises a separation plate, the separation plate is arranged on the shell and divides the shell into a high-pressure cavity and a low-pressure cavity, the air suction pipe is communicated with the low-pressure cavity, the exhaust pipe is communicated with the high-pressure cavity, the separation plate is provided with an assembly through hole, the motor is arranged in the low-pressure cavity, the pump body assembly is arranged in the high-pressure cavity, one end of the crankshaft penetrates through the assembly through hole and is matched with the rotor, the assembly through hole is matched with the crankshaft or the main bearing in a sealing mode, and the air suction port is communicated with the low-pressure cavity through an air suction channel.
Specifically, the suction passage is provided on the partition plate.
Specifically, a flow area of a suction end of the suction passage is larger than a flow area of a discharge end of the suction passage.
Further, the shell comprises a first shell, a second shell and a fixed connecting piece, the outer edge of the partition plate is clamped between the first shell and the second shell, and the fixed connecting piece penetrates through the partition plate and is fixed on the first shell and the second shell respectively.
Furthermore, a rolling bearing is arranged on the inner wall of the shell, and the end part of the crankshaft, extending out of the rotor, is matched with the rolling bearing.
According to some embodiments of the invention, the rotating compressor is a horizontal compressor.
According to the embodiment of the invention, the vehicle comprises the rotary compressor.
According to the vehicle provided by the embodiment of the invention, the rotary compressor and the electric control structure can be integrated by arranging the rotary compressor according to the embodiment of the invention, so that the rotary compressor is light in weight and small in size, the rotary compressor is miniaturized, and the reliability and the working efficiency of the rotary compressor are improved. Meanwhile, the abrasion resistance of the sliding piece is ensured to meet the use requirement of engineering technology and the lateral tightness of the sliding piece in the motion process, and the manufacturing cost and the process production difficulty of the sliding piece are reduced. The main bearing can be prevented from deforming due to pressure difference, the cylinder is prevented from deforming due to deformation of the main bearing, and the running reliability of the compressor is improved.
Drawings
FIG. 1 is a front view of a slider according to an embodiment of the present invention;
FIG. 2 is a left side view of a slider according to an embodiment of the present invention;
FIG. 3 is a right side view of a slider according to an embodiment of the present invention;
FIG. 4 is a top view of a slider according to an embodiment of the present invention;
FIG. 5 is a partial schematic view A of a rotary compressor according to an embodiment of the present invention;
fig. 6 is a partial schematic view B of a rotary compressor according to an embodiment of the present invention;
FIG. 7 is a force diagram of a slider according to an embodiment of the present invention;
FIG. 8 is a schematic view of a second coating on the low pressure side end face of a slider according to an embodiment of the present invention;
FIG. 9 is a schematic view of a second coating on the low pressure side end face of a slider according to further embodiments of the present invention;
FIG. 10 is a schematic view of a second coating on the low pressure side end face of a slider according to still further embodiments of the present invention;
FIG. 11 is a schematic view of a second coating on the low pressure side end face of a slider according to further embodiments of the present invention;
FIG. 12 is a schematic view of charging of a slider according to an embodiment of the present invention;
FIG. 13 is a DLC processing diagram for a slider according to an embodiment of the present invention;
FIG. 14 is a schematic view of a pump body assembly of the rotary compressor according to an embodiment of the present invention;
FIG. 15 is a schematic view of a crankshaft of the rotary compressor according to an embodiment of the present invention;
fig. 16 is a sectional view of a rotary compressor according to an embodiment of the present invention.
Reference numerals:
a slip sheet 200; a rotary compressor 100;
a body 201; a first coating 202; a second coating 203; the leading end 204 of the slip sheet;
a housing 1; an exhaust pipe 11; an air intake duct 12; a first housing 13; a second housing 14; a fixed connecting member 15; a partition plate 2; a suction passage 22; a motor 3; a stator 31 and a rotor 32; a pump body assembly 4; a cylinder 41; an exhaust port 412; an air inlet 413; a slide groove 414; a piston 42; a crankshaft 43; a main shaft 431; an eccentric portion 432; a main bearing 44; a hub portion 441; a bearing portion 442; the sub-bearing 45; rotating the tool 5; a target 6; an electric control device 8; a rolling bearing 9; a cover plate 10; a high pressure chamber a; a low pressure chamber b; and a placement space c.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length," "upper," "inner," "outer," "axial," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced device or element 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, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 16, a vane 200 of a rotary compressor 100 according to an embodiment of the present invention is described, wherein the rotary compressor 100 includes a crankshaft 43, a piston 42 and a cylinder 41 having a cylinder chamber, the cylinder 41 is provided with an exhaust port 412, an intake port 413 and a vane slot 414, the piston 42 is sleeved on the crankshaft 43 and disposed in the cylinder chamber, the vane 200 is disposed in the vane slot 414 and a leading end 204 of the vane abuts against the piston 42. The black arrows in FIG. 5 refer to the force direction of the slider 200, and the black arrows in FIG. 7 refer to the force of the slider 200.
The inventor carries out a large amount of stress calculation and repeated test verification analysis on the sliding sheet 200, finds that the abrasion failure of the sliding sheet 200 of the compressor 100 is only limited to the front end 204 of the sliding sheet and the low-pressure side end surface area of the sliding sheet 200, and can meet the use requirement of engineering technology by coating the abrasion local area, so the inventor carries out the following design on the sliding sheet:
as shown in fig. 1 to 16, the vane 200 of the rotary compressor 100 according to the embodiment of the present invention includes: a body 201, a first coating 202 and a second coating 203. The inventor finds through experiments that when the length L of the second coating 203 is larger than or equal to 2e in the moving direction of the sliding piece 200, the wear resistance of the sliding piece 200 can meet the use requirement of engineering technology, the side tightness of the sliding piece 200 in the moving process can be ensured, and the DLC coating on the end face of the sliding piece 200 where the second coating 203 is located is not required, so that the manufacturing cost of the sliding piece 200 is reduced.
In the height direction of the slider 200, the height of the first coating 202 and the height of the second coating 203 are respectively the same as the height of the body 201. Thereby, the wear resistance of the slider 200 can be ensured, and the manufacturing cost and the process production difficulty of the slider 200 can be reduced.
The first coating 202 and the second coating 203 are each a DLC coating, wherein the end face of the vane 200 adjacent to the suction port 413 is a low pressure side end face, and the eccentricity of the crankshaft 43 is e. The wear resistance of the slider 200 can be ensured by applying the DLC coating.
Here, the eccentric amount e is a distance between the axial line of the main shaft 431 of the crankshaft 43 and the axial line of the eccentric portion 432. DLC has a diamond-like carbon structure in which sp 2-bonded carbon and sp 3-bonded carbon are mainly mixed.
The charging mode of the sliding vane 200 according to the embodiment of the invention is as shown in fig. 12-13, the rotating tool 5 is formed into an H shape, and two sliding vanes 200 with the same shape and size are overlapped with each other to be inserted into the rotating tool 5 to realize DCL processing of the front end 204 of the sliding vane and part of the low-pressure side end surface of the sliding vane 200, and the projected areas of the sliding vanes 200 in the direction of the target 6 are ensured to be consistent. Compared with the prior art, in the manufacturing process of the DLC coating of the sliding vane 200, the charging amount of the sliding vane 200 can be increased to 12000-15000 sheets from the original 2000-3000 sheets, the charging amount of the sliding vane 200 can be increased by 600% at most, the manufacturing cost of a single sliding vane 200 can be reduced by 80%, and the qualification rate and the manufacturing manufacturability of the finished sliding vane 200 are also greatly improved.
According to the sliding sheet 200 provided by the embodiment of the invention, the first coating 202 is arranged at the front end of the body 201, the second coating 203 is arranged on the end surface at the low-pressure side, and the length L of the second coating 203 is more than or equal to 2e, so that the abrasion resistance of the sliding sheet 200 can be ensured to meet the use requirement of engineering technology and the side tightness of the sliding sheet 200 in the motion process, and the manufacturing cost of the sliding sheet 200 and the difficulty of process production are reduced.
Further, the area of the second coating layer 203 is less than 60% of the area of the low-pressure side end face. Therefore, the manufacturing cost and the process production difficulty of the sliding sheet 200 can be further reduced, and the production efficiency of the sliding sheet 200 is improved to a certain extent.
Alternatively, as shown in fig. 8-11, the second coating 203 is rectangular. Thereby making the manufacturing process of the slip sheet 200 simple and improving the production efficiency of the slip sheet 200. It is understood that the shape of the second coating 203 is not limited thereto, and the shape of the second coating 203 may be set according to practical circumstances as long as it can ensure that the wear resistance of the slider 200 can satisfy the use requirements of engineering and the side tightness of the slider 200 during movement.
The rotary compressor 100 according to the embodiment of the present invention may be a vertical compressor or a horizontal compressor. Specifically, the rotary compressor 100 may be applied to equipment provided with an air conditioner, such as a high-speed rail, an airplane, a tank, a ship, a bus, a car, a space shuttle, a space station, and a satellite. More specifically, the refrigerant in the rotary compressor 100 is CO2The refrigerant is, for example, R744 refrigerant.
The rotary compressor 100 according to the embodiment of the present invention includes: the pump comprises a shell 1, a motor 3 and a pump body assembly 4.
Specifically, the casing 1 is provided with an exhaust pipe 11 and an intake pipe 12, the motor 3 is provided in the casing 1, and the motor 3 includes a stator 31 and a rotor 32. The pump body assembly 4 is arranged in the housing 1, the pump body assembly 4 includes a cylinder 41, a piston 42, a crankshaft 43 of the sliding vane 200 and a main bearing 44, a cylinder cavity, an exhaust port 412, an air suction port 413 and a sliding vane groove 414 are arranged on the cylinder 41, the piston 42 is sleeved on the crankshaft 43 and arranged in the cylinder cavity, the sliding vane 200 is arranged in the sliding vane groove 414, a tip 204 of the sliding vane abuts against the piston 42, and the sliding vane 200 is the sliding vane 200 according to the above embodiment of the present invention. It will be appreciated that the crankshaft 43 is provided with an eccentric portion 432 and the piston 42 is sleeved over the eccentric portion 432. So that the piston 42, the sliding vane 200 and the cylinder 41 form a compression chamber of the refrigerant after being assembled.
When the rotary compressor 100 works, the crankshaft 43 drives the piston 42 to rotate around the axis of the cylinder 41 to perform eccentric motion under the rotation action of the motor 3, the sliding vane 200 stops against the piston 42 under the action of exhaust high pressure at the tail of the sliding vane 200 and performs periodic reciprocating linear motion along with the eccentric rotation of the piston, and finally, the periodic change of the volume in the cylinder 41 is formed, so that the compression process of the cylinder 41 on a refrigerant is realized.
According to the rotary compressor 100 of the embodiment of the present invention, by providing the sliding vane 200 according to the above-described embodiment of the present invention, it is ensured that the abrasion resistance of the sliding vane 200 can satisfy the use requirement of engineering technology and the lateral tightness of the sliding vane 200 during the movement, thereby reducing the manufacturing cost of the rotary compressor 100 and the difficulty of the process production.
According to some embodiments of the present invention, the rotary compressor 100 further includes a partition plate 2, the partition plate 2 is provided on the casing 1 to partition the inside of the casing 1 into a high pressure chamber a and a low pressure chamber b, the suction pipe 12 is communicated with the low pressure chamber b, the discharge pipe 11 is communicated with the high pressure chamber a, the partition plate 2 is provided with an assembly through hole, the motor 3 is provided in the low pressure chamber b, the pump body assembly 4 is provided in the high pressure chamber a, one end of the crankshaft 43 is fitted to the rotor 32 through the assembly through hole, the assembly through hole is sealingly fitted to the crankshaft 43 or the main bearing 44, and the suction port 413 is communicated with the low pressure chamber b through the suction passage. Therefore, the refrigerant enters the low-pressure cavity b from the air suction pipe 12 on the shell 1, and the refrigerant exchanges heat in the low-pressure cavity b under the action of heat emitted by the motor 3, so that the temperature of the motor 3 can be reduced, and the liquid refrigerant can be evaporated into a gas state. Further, compared with the prior art, the rotary compressor 100 according to the embodiment of the present invention may omit the reservoir structure, reduce the volume and weight of the rotary compressor 100, ensure the reliability of the motor 3, improve the performance of the motor 3, increase the rotation speed of the motor 3, and improve the reliability and the working efficiency of the rotary compressor 100. Since the high pressure chamber a and the low pressure chamber b are partitioned by the partition plate 2, the main bearing 44 is prevented from being deformed by a pressure difference, the cylinder 41 is prevented from being deformed by the deformation of the main bearing 44, and the reliability of the operation of the rotary compressor 100 is improved. In addition, the arrangement of the partition plate 2 enables the oil return channel of the pump body assembly 4 to be shorter and closer, reduces the volume of the rotary compressor 100, and achieves the miniaturization of the rotary compressor 100. The reliability and the working efficiency of the rotary compressor 100 are improved. It will be appreciated that the high pressure chamber a is provided with lubricating oil to lubricate the pump block assembly 4.
The operation of the rotary compressor 100 is: after the refrigerant outside the rotary compressor 100 enters the low pressure chamber b through the suction pipe 12, heat exchange is performed in the low pressure chamber b to reduce the temperature of the motor 3, and simultaneously the liquid refrigerant absorbs heat and evaporates into a gaseous state, the gaseous refrigerant enters the suction port 413 of the cylinder 41 through the suction passage 22, the refrigerant is compressed into high-temperature and high-pressure gas in the cylinder 41, and then the refrigerant is discharged into the high pressure chamber a, the refrigerant is subjected to oil-gas separation in the high pressure chamber a, and finally the gaseous refrigerant is discharged out of the rotary compressor 100 through the exhaust pipe 11 on the shell 1.
Therefore, the low-pressure chamber b has a certain gas-liquid separation function on the refrigerant. The high pressure chamber a performs a certain oil-gas separation function on the refrigerant, which not only reduces the oil discharge amount of the rotary compressor 100, but also reduces the noise of the rotary compressor 100.
Alternatively, as shown in fig. 14 and 16, the rotary compressor 100 is a two-cylinder compressor, and two eccentric portions 431 are provided on the crankshaft 43. So that the dynamic balance of the crankshaft 43 can be secured, the torque fluctuation of the rotary compressor 100 can be made smaller, and the vibration and noise of the rotary compressor 100 can be remarkably reduced. It is to be understood that the number of the eccentric portions 431 on the crankshaft 43 is not limited to two, and for example, the number of the eccentric portions 431 is only one, so long as it corresponds to the number of the cylinders 41.
Specifically, the suction passage 22 is provided on the partition plate 2. Therefore, the low-pressure refrigerant in the low-pressure cavity b can pass through the partition plate 2 and enter the cylinder 41 of the high-pressure cavity a part to compress the refrigerant, and the pump body assembly 4 is simple in structure.
Specifically, the flow area of the suction end of the suction passage 22 is larger than the flow area of the discharge end of the suction passage 22. Accordingly, the flow rate of the refrigerant entering the cylinder 41 can be ensured, and the reliability of the rotary compressor 100 can be improved.
Specifically, the pump block assembly 4 further includes a sub-bearing 45, a main bearing 44 and the sub-bearing 45 are respectively provided on both sides of the cylinder 41, the crankshaft 43 is fitted to the main bearing 44 and the sub-bearing 45 through the cylinder 41, the main bearing 44 includes a boss portion 441 and a bearing portion 442, the boss portion 441 is provided on the bearing portion 442 and an outer peripheral wall of the boss portion 441 is sealingly fitted to the fitting through hole, the bearing portion 442 is fixed to the cylinder 41, and a portion of the partition plate 2 abuts against an end face of the bearing portion 442 where the boss portion 441 is provided. It can be seen that, due to the difference in air pressure between the two sides of the partition plate 2, a large pressure is generated on the partition plate 2 due to the pressure difference, and the deformation of the main bearing 44 due to the pressure difference can be further avoided, so that the pump body assembly 4 is in a state of force balance. Since the partition plate 2 is subjected to the axial force and the partition plate 2 is in radial sealing engagement with the hub portion 441, when the rotary compressor 100 operates, the axial deformation of the partition plate 2 does not affect the radial sealing between the partition plate 2 and the hub portion 441, and the rigidity of the hub portion 441 can be improved, thereby improving the reliability of the rotary compressor 100 and ensuring the stable operation of the rotary compressor 100.
Optionally, a sealing structure of an O-ring (not shown) is provided between the partition plate 2 and the hub portion 441. Accordingly, the sealing performance between the partition plate 2 and the hub 441 can be further improved, and the reliability of the rotary compressor 100 can be ensured.
Further, partition plate 2 and bearing portion 442 are fixedly connected by a fastener. So that the reliability of the rotary compressor 100 can be further secured.
Optionally, the rotary compressor 100 further comprises an electric control device 8, the electric control device 8 is arranged on the portion of the shell 1 where the low pressure cavity is arranged, and the electric control device 8 is connected with the motor 3 to drive the motor 3 to work. Therefore, the rotary compressor 100 and the electric control structure are integrated, when the rotary compressor 100 works, the electric control device 8 drives the motor 3 to work, so that the crankshaft 43 and the rotor 32 are matched to rotate, the periodic change of the volume in the cylinder 41 is finally formed, and the compression process of the cylinder 41 on the refrigerant is further realized. In addition, the electric control device 8 is connected with the motor 3, and therefore, the electric control device 8 is located on one side of the low-pressure cavity b, so that the refrigerant entering the low-pressure cavity b can also cool the electric control device 8, and the reliability of the rotary compressor 100 is improved.
Optionally, the rotary compressor 100 further comprises a cover plate 10, the cover plate 10 being provided on an end of the casing 1 to define a placement space c of the electric control device 8 with the casing 1. Thereby protecting the electric control device 8.
According to some embodiments of the present invention, the housing 1 includes a first housing 13, a second housing 14, and a fixing connector 15, an outer edge of the partition plate 2 is sandwiched between the first housing 13 and the second housing 14, and the fixing connector 15 is fixed to the first housing 13 and the second housing 14 through the partition plate 2, respectively. Thereby, the connection between the shell 1 and the partition plate 2 is simple and stable, and the reliability of the rotary compressor 100 is improved to some extent.
Further, a rolling bearing 9 is provided on the inner wall of the housing 1, and the end of the crankshaft 43 protruding the rotor 32 is fitted with the rolling bearing 9. It can be seen that the rolling bearing 9 is provided to further ensure the stability of the rotation of the crankshaft 43, and further ensure the compression effect of the cylinder 41 on the refrigerant, thereby ensuring the reliability of the rotary compressor 100.
According to some embodiments of the present invention, the rotary compressor 100 is a horizontal compressor. Accordingly, the space utilization rate of the rotary compressor 100 can be further improved, and the volume of the rotary compressor 100 can be reduced.
A vehicle (not shown) according to an embodiment of the present invention includes the rotary compressor 100 described above.
According to the vehicle of the embodiment of the present invention, by providing the rotary compressor 100 according to the above-described embodiment of the present invention, the rotary compressor 100 and the electric control structure can be integrated, the rotary compressor 100 is light in weight and small in size, the rotary compressor 100 is miniaturized, and the reliability and the working efficiency of the rotary compressor 100 are improved. The abrasion resistance of the sliding sheet 200 is ensured to meet the use requirement of engineering technology and the side tightness of the sliding sheet 200 in the motion process, and the manufacturing cost and the process production difficulty of the sliding sheet 200 are reduced. Meanwhile, the deformation of the main bearing 42 due to the pressure difference can be avoided, the deformation of the cylinder 411 due to the deformation of the main bearing 44 can be avoided, and the operation reliability of the rotary compressor 100 can be improved.
The structure of the rotary compressor 100 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 16. However, it should be noted that the following description is only exemplary, and it is obvious that a person skilled in the art after reading the following technical solutions of the present invention can combine, replace, modify the technical solutions or some technical features thereof, and this also falls into the protection scope of the present invention.
As shown in fig. 1 to 16, a rotary compressor 100 according to an embodiment of the present invention includes: the pump body assembly comprises a shell 1, a partition plate 2, a motor 3, a pump body assembly 4, an electric control device 8 and a cover plate 10.
Specifically, the rotary compressor 100 is a horizontal compressor, and the refrigerant used is R744 (CO)2). The casing 1 is provided with an intake pipe 12 and an exhaust pipe 11. The housing 1 includes a first housing 13, a second housing 14, and a fixed connection 15. The outer edge of the partition plate 2 is clamped between the first and second housings 13 and 14, and the fixing connection 15 is fixed to the first and second housings 13 and 14 through the partition plate 2 to divide the interior of the housing 1 into a high pressure chamber a and a low pressure chamber b. The suction pipe 12 communicates with the low pressure chamber b, and the exhaust pipe 11 communicates with the high pressure chamber a.
The motor 3 is provided in the low pressure chamber b, and the motor 3 includes a stator 31 and a rotor 32. The cover plate 10 is provided on an end portion of the housing 1 to define a placement space c of the electric control device 8 with the housing 1. The electric control device 8 is connected with the motor 3 to drive the motor 3 to work.
The pump body assembly 4 is arranged in the high-pressure cavity a, and the pump body assembly 4 comprises a cylinder 41, a piston 42, a sliding vane 200, a crankshaft 43, a main bearing 44 and an auxiliary bearing 45. The cylinder 41 is provided with a cylinder cavity, an exhaust port 412, an air suction port 413 and a slide sheet groove 414, the crankshaft 43 is provided with two eccentric parts 432, the piston 42 is sleeved on the eccentric parts 432 and is arranged in the cylinder cavity, the slide sheet 200 is arranged in the slide sheet groove 414, and the front end 204 of the slide sheet is abutted against the piston 42. An assembly through hole is formed in the partition plate 2, one end of the crankshaft 43 penetrates through the assembly through hole to be matched with the rotor 32, a rolling bearing 9 is arranged on the inner wall of the shell 1, and the end portion, extending out of the rotor 32, of the crankshaft 43 is matched with the rolling bearing 9.
The suction port 413 of the cylinder 41 communicates with the low pressure chamber b through the suction passage 22 on the partition plate 2, and the flow area of the suction side of the suction passage 22 is larger than the flow area of the discharge side of the suction passage 22.
The slider 200 includes: a body 201, a first coating 202 and a second coating 203.
Wherein, the first coating 202 is arranged on the front end of the body 201, the second coating 203 is arranged on the low-pressure side end face of the slide sheet 200, the length L of the second coating 203 is more than or equal to 2e in the moving direction of the slide sheet 200, and the height of the first coating 202 and the height of the second coating 203 are respectively the same as the height of the body 201 in the height direction of the slide sheet 200. The first coating 202 and the second coating 203 are each a DLC coating, wherein the end face of the vane 200 adjacent to the suction port 413 is a low pressure side end face, and the eccentricity of the crankshaft 43 is e. And the area of the second coating layer 203 is less than 60% of the area of the low-pressure side end face.
The main bearing 44 and the sub bearing 45 are respectively provided on both sides of the cylinder 41. The crankshaft 43 is fitted through the cylinder 41 with a main bearing 44 and a sub bearing 45. The main bearing 44 includes a boss portion 441 and a bearing portion 442, the boss portion 441 is provided on the bearing portion 442, and a seal structure in which an O-ring is provided between an outer peripheral wall of the boss portion 441 and the fitting through hole. The bearing 442 is fixed to the cylinder 41, a part of the partition plate 2 abuts on an end surface of the bearing 442 where the boss portion 441 is provided, and the partition plate 2 and the bearing 442 are fixedly connected by a fastening member.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. A slip sheet of a rotary compressor comprises a crankshaft, a piston and an air cylinder with an air cylinder cavity, wherein an air exhaust port, an air suction port and a slip sheet groove are arranged on the air cylinder, the piston is sleeved on the crankshaft and arranged in the air cylinder cavity, the slip sheet is arranged in the slip sheet groove, and the front end of the slip sheet is abutted against the piston, the rotary compressor is characterized by comprising a body, a first coating and a second coating, the first coating is arranged on the front end of the body, the second coating is arranged on the low-pressure side end face of the slip sheet, the length L of the second coating is more than or equal to 2e in the moving direction of the slip sheet, the height of the first coating and the height of the second coating are respectively the same as that of the body in the height direction of the slip sheet, and the first coating and the second coating are respectively DLC coatings, the end surface of the slide sheet, which is adjacent to the air suction port, is a low-pressure side end surface, and the eccentric amount of the crankshaft is e;
the area of the second coating is less than 60% of the area of the low pressure side end face.
2. A rotary compressor, comprising:
the air suction device comprises a shell, wherein an exhaust pipe and an air suction pipe are arranged on the shell;
the motor is arranged in the shell and comprises a stator and a rotor;
the pump body assembly is arranged in the shell and comprises an air cylinder, a piston, a sliding vane, a crankshaft and a main bearing, wherein an air cylinder cavity, an air exhaust port, an air suction port and a sliding vane groove are formed in the air cylinder, the piston is sleeved on the crankshaft and arranged in the air cylinder cavity, the sliding vane is arranged in the sliding vane groove, the front end of the sliding vane abuts against the piston, and the sliding vane is the sliding vane according to claim 1;
the motor is arranged in the low-pressure cavity, the pump body assembly is arranged in the high-pressure cavity, one end of the crankshaft penetrates through the assembly through hole to be matched with the rotor, the main bearing comprises a hub part, the peripheral wall of the hub part is in sealing fit with the assembly through hole, and the air suction port is communicated with the low-pressure cavity through an air suction channel;
and a rolling bearing is arranged on the inner wall of the shell, and the end part of the crankshaft extending out of the rotor is matched with the rolling bearing.
3. The rotary compressor of claim 2, wherein the suction passage is provided on the partition plate.
4. The rotary compressor of claim 3, wherein a flow area of a suction end of the suction passage is larger than a flow area of a discharge end of the suction passage.
5. The rotary compressor of claim 2, wherein the housing includes a first housing, a second housing, and fixed connectors, an outer edge of the partition plate is sandwiched between the first housing and the second housing, and the fixed connectors are fixed to the first housing and the second housing through the partition plate, respectively.
6. The rotary compressor according to any one of claims 2 to 5, wherein the rotary compressor is a horizontal compressor.
7. A vehicle, characterized in that it comprises a rotary compressor according to any one of claims 2-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054967.1A CN107061275B (en) | 2017-01-24 | 2017-01-24 | Slip sheet of rotary compressor, rotary compressor with slip sheet and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710054967.1A CN107061275B (en) | 2017-01-24 | 2017-01-24 | Slip sheet of rotary compressor, rotary compressor with slip sheet and vehicle |
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| Publication Number | Publication Date |
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| CN107061275A CN107061275A (en) | 2017-08-18 |
| CN107061275B true CN107061275B (en) | 2020-11-24 |
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| JP6432657B1 (en) | 2017-08-24 | 2018-12-05 | 株式会社富士通ゼネラル | Rotary compressor |
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| JPH07286589A (en) * | 1994-04-18 | 1995-10-31 | Nippon Piston Ring Co Ltd | Slide member for compressor |
| US5947710A (en) * | 1995-12-07 | 1999-09-07 | Carrier Corporation | Rotary compressor with reduced lubrication sensitivity |
| JP2009235969A (en) * | 2008-03-26 | 2009-10-15 | Toshiba Carrier Corp | Rotary compressor and refrigerating cycle apparatus |
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| CN107061275A (en) | 2017-08-18 |
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