CN110617222A - Horizontal rotary compressor for electric automobile air conditioner and working method - Google Patents
Horizontal rotary compressor for electric automobile air conditioner and working method Download PDFInfo
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- CN110617222A CN110617222A CN201910999503.7A CN201910999503A CN110617222A CN 110617222 A CN110617222 A CN 110617222A CN 201910999503 A CN201910999503 A CN 201910999503A CN 110617222 A CN110617222 A CN 110617222A
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- auxiliary bearing
- oil
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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
- F04C18/344—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 inner member
- F04C18/3441—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C18/3445—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 inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/026—Lubricant separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
- F04C29/028—Means for improving or restricting lubricant flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
-
- 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
- F04C2240/00—Components
- F04C2240/50—Bearings
Abstract
A horizontal rotary compressor for an electric automobile air conditioner and a working method thereof are provided, wherein the compressor comprises a shell, a controller outside the shell, a motor and a pump body inside the shell, and a low-pressure air suction pipe and a high-pressure exhaust cyclone separator which are distributed on the shell; the pump body adopts a non-circular cylinder as a supporting piece, is sealed and fixed with an annular end face in the middle section of the shell, and divides the interior of the shell of the compressor into a low-pressure cavity and a high-pressure cavity, the motor is positioned in the low-pressure cavity, and the oil pool is positioned in the high-pressure cavity; the radial extension part of the auxiliary bearing of the pump body is provided with an oil supply hole, the auxiliary bearing and the eccentric part of the crankshaft are provided with a spiral oil groove, lubricating oil is supplied to an unloading oil groove of the auxiliary bearing from an oil pool by utilizing the pressure difference of suction and exhaust, and then the lubricating oil is supplied to the main bearing through the spiral oil groove; the invention is beneficial to reducing the oil sealing amount of the compressor, maintaining the oil level to be stable, overcoming the oil supply problem of the existing horizontal rotary compressor, and simultaneously cooling the motor and the controller by utilizing the suction gas.
Description
Technical Field
The invention relates to a compressor for an electric automobile air conditioner, in particular to a horizontal rotary compressor for the electric automobile air conditioner and a working method.
Background
In recent years, the problem of automobile exhaust pollution is more and more emphasized by people, and the electric automobile replacing a fuel oil automobile is a main trend of development of the automobile industry in the future. In the past, although the electric automobile industry has developed rapidly, the problem of energy consumption of an air conditioning system has not been effectively solved.
The key point for solving the problems lies in developing a reliable-performance, energy-saving and high-efficiency air-conditioning compressor for the electric automobile. The existing air-conditioning compressor of the electric automobile mainly uses a scroll compressor as a main part, but the electric scroll compressor has long development period, high production cost, large early investment, no certain economic basis and technical experience and is difficult to develop in the field of the electric scroll compressor.
In addition to electric scroll compressors, electric rotary compressors are also a viable solution. The rotary compressor, also called rolling piston compressor and rolling rotor compressor, has simple structure, high efficiency, high reliability and low processing cost, adapts to pressure ratio, namely condensation and evaporation temperature change (the pressure ratio can ensure higher efficiency when changing in a larger range), and is widely applied to the fields of room air conditioners, heat pump water heaters, heating heat pumps, heat pump clothes dryers, heat pump dish washers, commercial and food cold chains and the like. But the production in the room air conditioner industry is over 1 million units per year. In the market of air conditioners and heat pumps, the application range of rotary compressors is larger and larger compared with that of scroll compressors. These are all due to the advantages of the above-mentioned properties, reliability and cost combination.
Single and dual cylinder rotary compressors for automotive air conditioning systems have been developed in japan as early as 1981. The early rotary compressor of the automobile air conditioner is driven by an engine, and the performance of the rotary compressor is greatly influenced by the running condition of the automobile. When the automobile is in idle speed, the rotating speed of the compressor is low, the pressure difference between suction and exhaust is large, the leakage amount of the refrigerant in unit time is increased, the volumetric efficiency of the compressor is reduced rapidly, and the normal refrigeration requirement cannot be met. On the other hand, when the automobile runs at a high speed, the rotating speed of the compressor is high, the refrigerating capacity or the heating capacity is larger than the normal requirement, and in order to maintain the temperature in the automobile, the clutch needs to be disengaged and engaged repeatedly, so that the reliability of the clutch is affected, and larger impact and noise are also brought.
However, for the air conditioning system of the electric automobile, the compressor is directly driven by the motor and is not influenced by the rotating speed of an automobile engine, and the compressor can keep high-efficiency operation and meet the requirements of normal refrigeration or heating through frequency conversion regulation no matter the compressor is at idle speed or high speed. However, the problem of oil supply of the horizontal rotary compressor under variable working conditions and different inclination angles still needs to be solved.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention aims to provide the horizontal rotary compressor for the air conditioner of the electric automobile and the working method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a horizontal rotary compressor for an electric automobile air conditioner comprises a shell 1, a compressor controller 2 arranged on the outer side of the end face of the shell 1, a motor and a pump body arranged in the shell 1;
a low-pressure air suction pipe 3 and a high-pressure exhaust cyclone separator 4 are arranged on the shell 1;
the motor is composed of a stator 5 and a rotor 6 arranged inside the stator 5 in a clearance mode;
the pump body comprises a crankshaft 7, a cylinder 11, a rolling piston 10, a main bearing 8, an auxiliary bearing 12, a main bearing side silencer 9, an auxiliary bearing side silencer 13, a low-pressure cavity 14 and a high-pressure cavity 15; the crankshaft 7 is positioned in the center of the pump body and extends into the rotor 6 along the horizontal direction, a rolling piston 10 is sleeved on the eccentric part of the crankshaft 7, the eccentric part of the crankshaft 7 is positioned in the cylinder 11, two end faces of the cylinder 11 are respectively matched and sealed with the main bearing 8 and the auxiliary bearing 12, wherein one side close to the motor is the main bearing 8, and the main bearing 8 and the auxiliary bearing 12 are respectively provided with the main bearing side silencer 9 and the auxiliary bearing side silencer 13; the end face of the cylinder 11 connected with the main bearing 8 is matched with an annular end face 101 in the shell 1, meanwhile, the shell 1 and the outer wall face of the cylinder 11 are in interference fit, so that the interior of the compressor shell is divided into two chambers, namely a low-pressure chamber 14 and a high-pressure chamber 15, wherein the low-pressure chamber 14 is enclosed by the shell 1, the cylinder 11, the main bearing 8, a main bearing side silencer 9, a stator 5 and a rotor 6, the high-pressure chamber 15 is enclosed by the shell 1, the cylinder 11, an auxiliary bearing 12 and an auxiliary bearing side silencer 13, sealing rings are additionally arranged on the annular end face 101 and the outer wall face of the cylinder 11 to improve air tightness, and an oil pool 16 is arranged at the bottom of the.
The outer wall of the cylinder 11 adopts a non-circular structure, and the wall surface of the cylinder 11 is provided with an air suction structure 112 and a sliding vane sliding chute 113, wherein the air suction structure 112 consists of an axial air suction hole 1120, a plurality of radial air suction holes 1121 which are connected with the axial air suction hole 1120 and the inner wall surface of the cylinder 11; the cylinder 11 is of a double-exhaust structure and can exhaust gas into a cavity of the main bearing side muffler 9 and a cavity of the auxiliary bearing side muffler 13 at the same time, and a cylinder axial through hole 110 is formed in the wall surface of the cylinder 11 and used for communicating the cavity of the main bearing side muffler 9 and the cavity of the auxiliary bearing side muffler 13; meanwhile, the cylinder 11 is used as a positioning and supporting structure of the pump body, the bottom of the cylinder is designed to be a plane, so that the cylinder is convenient to mount and fix, and the hollow part 111 is arranged to reduce the quality of the cylinder 11.
A main bearing exhaust hole 81, a main bearing axial through hole 82 for communicating a cavity of the main bearing side muffler 9 with a cavity of the auxiliary bearing side muffler 13, and an annular plane 83 matched with the main bearing side exhaust muffler 9 are processed on the main bearing 8; the matching part of the main bearing 8 and the cylinder 11 is of a non-circular structure, and the main bearing radial protruding part 84 is used for covering a sliding vane sliding groove 113 in the cylinder 11 and preventing lubricating oil and refrigerant from leaking to the low-pressure cavity 14.
The main bearing side exhaust muffler 9 is provided with a turned edge 90 which is matched and sealed with the annular plane 83 on the main bearing 8, so that the cavity of the main bearing side exhaust muffler 9 is isolated from the low-pressure cavity 14 to form an independent cavity.
The matching part of the auxiliary bearing 12 and the cylinder 11 is of a non-circular structure, and an auxiliary bearing exhaust hole 121, an auxiliary bearing axial through hole 122 for communicating a cavity of the main bearing side muffler 9 with a cavity of the auxiliary bearing side muffler 13, is processed on the matching surface; the sub-bearing radially protruding portion 123 of the sub-bearing 12 is immersed in the oil sump 16, an upper radial oil hole 124 is formed in the sub-bearing radially protruding portion 123 to communicate with an oil relief groove 125 formed in the interior of the sub-bearing 12, and a sub-bearing spiral oil groove 126 is formed in the inner surface of the sub-bearing 12.
The crankshaft 7 is a solid eccentric structure, and a crankshaft helical oil groove 70 is machined in the eccentric part of the crankshaft.
Firstly, a stator 5 of a motor is electrified and started through a compressor controller 2, and a rotor 6 rotates; the rotor 6 drives the crankshaft 7 to rotate, and the rotation of the crankshaft 7 drives the rolling piston 10 to eccentrically rotate in the cylinder 11.
When the horizontal rotary compressor for the air conditioner of the electric automobile is used for the air conditioner system of the electric automobile, a low-pressure refrigerant at the outlet of an evaporator of the air conditioner system of the electric automobile enters a low-pressure cavity 14 from a low-pressure air suction pipe 3 on a shell 1 during working, cools a compressor controller 2 on the outer side of the end surface of the shell 1, and cools a motor through a gap between a stator 5 and a rotor 6; a low-pressure refrigerant enters the cylinder 11 through the air suction structure 112 and rotates along with the crankshaft 7, the compressed high-pressure refrigerant is discharged into a cavity of the main bearing side muffler 9 and a cavity of the auxiliary bearing muffler 13 through a main bearing exhaust hole 81 on the main bearing 8 and an auxiliary bearing exhaust hole 121 on the auxiliary bearing 12 respectively, and the high-pressure refrigerant in the cavity of the main bearing side muffler 9 sequentially passes through a main bearing axial through hole 82, a cylinder axial through hole 110 and an auxiliary bearing axial through hole 122 and enters the cavity of the auxiliary bearing muffler 13; finally, the refrigerant in the cavity of the auxiliary bearing muffler 13 flows into the high-pressure cavity 15, and then is separated from the oil and gas through the high-pressure exhaust cyclone separator 4 and discharged out of the compressor.
Meanwhile, the lubricating oil in the oil pool 16 enters the unloading oil groove 125 from the radial oil hole 124 on the auxiliary bearing 12 under the action of the pressure difference between the refrigerant in the cylinder 11 and the refrigerant in the high-pressure cavity 15; as crankshaft 7 rotates, a portion of the lubricating oil lubricates auxiliary bearing 12 through auxiliary bearing helical oil groove 126; the other part of the lubricating oil is transferred to the side of the main bearing 8 from a crankshaft spiral oil groove 70 processed on the eccentric part of the crankshaft 7 to lubricate the rolling piston 10 and the eccentric part of the crankshaft 7, finally, under the pressure difference of a refrigerant in the air cylinder 11 and the low-pressure cavity 14, the lubricating oil is transferred to the low-pressure cavity 14 to lubricate the main bearing 8, the lubricating oil entering the low-pressure cavity 14 enters the air cylinder 11 along with air suction to realize oil return, and a rotary sealing structure is added on the matching section of the main bearing 8 and the crankshaft 7 to reduce the oil outlet amount.
Compared with the prior art, the invention has the following advantages:
1. through cylinder and casing cooperation, divide into low-pressure chamber and high-pressure chamber with the compressor cavity, the oil bath is in high-pressure chamber, and lubricating oil can not be because pressure differential, jolt and the inclination change of compressor, and the migration is repeated between the pump body and motor, maintains the oil level height when reducing lubricating oil oiling volume, guarantees steady fuel feeding.
2. The pressure difference oil supply is realized from the oil supply hole on the auxiliary bearing by utilizing the air suction and exhaust pressure difference, rather than oil supply through the central hole of the crankshaft, an additional oil suction assembly and a required centrifugal fan can be omitted, and the cost and the installation process are reduced.
3. The crankshaft does not need a machining center oil hole and is of a solid structure, the strength and the rigidity of the crankshaft are improved, the deflection of the crankshaft is reduced, clearance fit is guaranteed, and friction and abrasion are reduced.
4. The cylinder is used as a supporting positioning piece, a non-circular structure is adopted, the radial size of the compressor is reduced, the size of the compressor is smaller and more compact, and the bottom of the compressor is designed to be a plane, so that the compressor is convenient to mount and fix.
5. Compared with a common high-backpressure rotary compressor, the compressor controller can be arranged outside the low-pressure cavity, and the suction cooling controller is utilized without additionally increasing a heat exchanger.
Drawings
Fig. 1 is a schematic structural view of a horizontal rotary compressor for an air conditioner of an electric vehicle according to the present invention.
Fig. 2 is a schematic sectional view of the horizontal rotary compressor a-a of fig. 1.
Fig. 3 is a schematic view of the air suction structure of the cylinder according to the embodiment of the invention.
FIG. 4 shows a schematic structural view of a main bearing according to an embodiment of the present invention.
Fig. 5 is a schematic view of a main bearing side muffler structure according to an embodiment of the present invention.
Fig. 6 is a schematic view of a secondary bearing structure according to an embodiment of the present invention.
Fig. 7 shows a schematic cross-sectional view of the secondary bearing a-a of fig. 6.
Fig. 8 is a schematic view of a crankshaft structure according to an embodiment of the present invention.
Fig. 9 is a refrigerant path diagram during the operation of the horizontal rotary compressor for an air conditioner of an electric vehicle according to the present invention.
Fig. 10 is a diagram showing an oil supply path of the horizontal rotary compressor for an air conditioner of an electric vehicle according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the horizontal rotary compressor for the air conditioner of the electric automobile comprises a shell 1, a compressor controller 2 arranged outside the end surface of the shell 1, and a motor and a pump body arranged inside the shell 1; a low-pressure air suction pipe 3 and a high-pressure exhaust cyclone separator 4 are arranged on the shell 1; the motor is composed of a stator 5 and a rotor 6 arranged inside the stator 5 in a clearance mode; the pump body comprises a crankshaft 7, a cylinder 11, a rolling piston 10, a main bearing 8, an auxiliary bearing 12, a main bearing side silencer 9, an auxiliary bearing side silencer 13, a low-pressure cavity 14 and a high-pressure cavity 15; the crankshaft 7 is positioned in the center of the pump body and extends into the rotor 6 along the horizontal direction, a rolling piston 10 is sleeved on the eccentric part of the crankshaft 7, the eccentric part of the crankshaft 7 is positioned in the cylinder 11, two end faces of the cylinder 11 are respectively matched and sealed with the main bearing 8 and the auxiliary bearing 12, wherein one side close to the motor is the main bearing 8, and the main bearing 8 and the auxiliary bearing 12 are respectively provided with the main bearing side silencer 9 and the auxiliary bearing side silencer 13; the end face of the cylinder 11 connected with the main bearing 8 is matched with the annular end face 101 in the shell 1, and meanwhile, the shell 1 and the outer wall face of the cylinder are in interference fit, so that the interior of the compressor shell is divided into two chambers, namely a low-pressure chamber 14 and a high-pressure chamber 15, wherein the low-pressure chamber 14 is enclosed by the shell 1, the cylinder 11, the main bearing 8, a main bearing side silencer 9, a stator 5 and a rotor 6, the high-pressure chamber 15 is enclosed by the shell 1, the cylinder 11, an auxiliary bearing 12 and an auxiliary bearing side silencer 13, and an oil pool 16 is located at the bottom of the high-pressure chamber 15.
Fig. 2 and 3 are schematic views of a cylinder structure according to an embodiment of the present invention. The cylinder 11 adopts a non-circular structure, the wall surface of the cylinder 11 is provided with an air suction structure 112 and a sliding vane sliding chute 113, wherein the air suction structure 112 consists of an axial air suction hole 1120, a plurality of radial air suction holes 1121, and the radial air suction holes are connected with the axial air suction hole 1120 and the inner wall surface of the cylinder; the cylinder is of a double-exhaust structure and can exhaust gas into the main bearing side muffler 9 and the auxiliary bearing side muffler 13 at the same time, and a cylinder axial through hole 110 is formed in the wall surface of the cylinder 11 and is used for communicating a cavity of the main bearing side muffler 9 with a cavity of the auxiliary bearing side muffler 13; meanwhile, the bottom of the cylinder 11 is designed to be a plane, so that the installation and the fixation are convenient, and the hollow part 111 is arranged to reduce the quality of the cylinder 11.
Fig. 4 is a schematic view of a main bearing structure according to an embodiment of the present invention. A main bearing exhaust hole 81, a main bearing axial through hole 82 for communicating a cavity of the main bearing side muffler 9 with a cavity of the auxiliary bearing side muffler 13, and an annular plane 83 matched with the main bearing side exhaust muffler 9 are processed on the main bearing 8; the matching part of the main bearing 8 and the cylinder 11 is of a non-circular structure, and the main bearing radial protruding part 84 is used for covering a sliding vane sliding groove 113 in the cylinder 11 and preventing lubricating oil and refrigerant from leaking to the low-pressure cavity 14.
Fig. 5 is a schematic view of a main bearing side exhaust muffler according to an embodiment of the present invention. The main bearing side exhaust muffler 9 is provided with a turned edge 90 which is matched and sealed with the annular plane 83 on the main bearing 8, so that the cavity of the main bearing side exhaust muffler 9 is isolated from the low-pressure cavity 14 to form an independent cavity.
Fig. 6 and 7 are schematic views of a secondary bearing structure according to an embodiment of the present invention. The matching part of the auxiliary bearing 12 and the cylinder 11 is also in a non-circular structure, and an auxiliary bearing exhaust hole 121, an auxiliary bearing axial through hole 122 for communicating the cavity of the main bearing side muffler 9 with the cavity of the auxiliary bearing side muffler 13, is processed on the matching surface; the sub-bearing radially protruding portion 123 of the sub-bearing 12 is immersed in the oil sump 16, an upper radial oil hole 124 is formed in the sub-bearing radially protruding portion 123 to communicate with an oil relief groove 125 formed in the interior of the sub-bearing 12, and a sub-bearing spiral oil groove 126 is formed in the inner surface of the sub-bearing 12.
Fig. 8 is a schematic view of a crankshaft structure according to an embodiment of the present invention. The crankshaft 7 is a solid structure, and a crankshaft helical oil groove 70 is formed in the eccentric portion to convey the lubricating oil on the side of the auxiliary bearing 12 to the side of the main bearing 8 so as to lubricate the rolling piston 10 and the main bearing 8.
With reference to fig. 9, the path of the refrigerant when the horizontal rotary compressor for the air conditioner of the electric vehicle according to the present invention is operated is shown by the solid arrow in the figure, the low-pressure refrigerant at the outlet of the evaporator of the air conditioning system of the electric vehicle enters the low-pressure chamber 14 from the air suction hole 3 on the housing 1, cools the compressor controller 2 outside the end surface of the housing 1, and cools the motor through the gap between the stator 5 and the rotor 6; a low-pressure refrigerant enters the cylinder 11 through the air suction structure 112 and rotates along with the crankshaft 7, the compressed high-pressure refrigerant is discharged into a cavity of the main bearing side muffler 9 and a cavity of the auxiliary bearing muffler 13 through a main bearing exhaust hole 81 on the main bearing 8 and an auxiliary bearing exhaust hole 121 on the auxiliary bearing 12 respectively, and the high-pressure refrigerant in the cavity of the main bearing side muffler 9 sequentially passes through a main bearing axial through hole 82, a cylinder axial through hole 110 and an auxiliary bearing axial through hole 122 and enters the cavity of the auxiliary bearing muffler 13; finally, the refrigerant in the cavity of the auxiliary bearing muffler 13 flows into the high-pressure cavity 15, and then is separated from the oil and gas through the high-pressure exhaust cyclone separator 4 and discharged out of the compressor.
Fig. 10 is a diagram of an oil supply path according to the present invention, and the lubricating oil in the oil sump 16 enters the unloading oil groove 125 from the radial oil hole 124 of the secondary bearing 12 under the action of the pressure difference between the refrigerant in the cylinder 11 and the refrigerant in the high-pressure chamber 15. As crankshaft 7 rotates, a portion of the lubricating oil lubricates auxiliary bearing 12 through auxiliary bearing helical oil groove 126; the other part of the lubricating oil is transferred to the side of the main bearing 8 from a crankshaft spiral oil groove 70 processed on the eccentric part of the crankshaft 7 to lubricate the rolling piston 10 and the eccentric part of the crankshaft 7, finally, under the pressure difference of the refrigerant in the cylinder 11 and the low-pressure cavity 14, the lubricating oil is transferred to the low-pressure cavity 14 to lubricate the main bearing 8, and the lubricating oil entering the low-pressure cavity 14 enters the cylinder 11 along with the suction air to realize oil return.
Claims (9)
1. A horizontal rotary compressor for an electric automobile air conditioner comprises a shell (1), a compressor controller (2) arranged on the outer side of the end face of the shell (1), a motor and a pump body arranged in the shell (1); the method is characterized in that: a low-pressure air suction pipe (3) and a high-pressure exhaust cyclone separator (4) are arranged on the shell (1); the motor is composed of a stator (5) and a rotor (6) arranged at the inner side of the stator (5) in a clearance mode; the pump body comprises a crankshaft (7), a cylinder (11), a rolling piston (10), a main bearing (8), an auxiliary bearing (12), a main bearing side silencer (9), an auxiliary bearing side silencer (13), a low-pressure cavity (14) and a high-pressure cavity (15); the crankshaft (7) is positioned in the center of the pump body and extends into the rotor (6) along the horizontal direction, a rolling piston (10) is sleeved on the eccentric part of the crankshaft (7), the eccentric part of the crankshaft (7) is positioned in the cylinder (11), two end faces of the cylinder (11) are respectively matched and sealed with the main bearing (8) and the auxiliary bearing (12), the main bearing (8) is arranged on one side close to the motor, and the main bearing side silencer (9) and the auxiliary bearing side silencer (13) are respectively arranged on the main bearing (8) and the auxiliary bearing (12); the end face of the cylinder (11) connected with the main bearing (8) is matched with an annular end face (101) in the shell (1), meanwhile, the shell (1) and the outer wall face of the cylinder (11) are in interference fit, so that the interior of the compressor shell is divided into two chambers, namely a low-pressure chamber (14) and a high-pressure chamber (15), wherein the low-pressure chamber (14) is formed by the shell (1), the cylinder (11), the main bearing (8), a main bearing side silencer (9), a stator (5) and a rotor (6) in a surrounding mode, the high-pressure chamber (15) is formed by the shell (1), the cylinder (11), an auxiliary bearing (12) and an auxiliary bearing side silencer (13) in a surrounding mode, sealing rings are additionally arranged on the outer wall faces of the annular end face (101) and the cylinder (11) to improve air tightness, and an oil pool (16) is located at the.
2. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: the outer wall of the cylinder (11) adopts a non-circular structure, the wall surface of the cylinder (11) is provided with an air suction structure (112) and a sliding vane sliding chute (113), wherein the air suction structure (112) consists of an axial air suction hole (1120), and a plurality of radial air suction holes (1121) which are connected with the axial air suction hole (1120) and the inner wall surface of the cylinder (11); the cylinder (11) is of a double-exhaust structure, exhaust can be conducted in a cavity of the main bearing side silencer (9) and a cavity of the auxiliary bearing side silencer (13) at the same time, and a cylinder axial through hole (110) is formed in the wall surface of the cylinder (11) and used for communicating the cavity of the main bearing side silencer (9) and the cavity of the auxiliary bearing side silencer (13).
3. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: the cylinder (11) is used as a positioning and supporting structure of the pump body, the bottom of the cylinder is designed to be a plane, so that the cylinder is convenient to mount and fix, and the hollow part (111) is arranged to reduce the mass of the cylinder (11).
4. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: a main bearing exhaust hole (81), a main bearing axial through hole (82) for communicating a cavity of the main bearing side muffler (9) with a cavity of the auxiliary bearing side muffler (13), and an annular plane (83) matched with the main bearing side exhaust muffler (9) are processed on the main bearing (8); the matching part of the main bearing (8) and the cylinder (11) is of a non-circular structure, and the radial protruding part (84) of the main bearing is used for covering a sliding vane sliding groove (113) in the cylinder (11) and preventing lubricating oil and refrigerant from leaking to the low-pressure cavity (14).
5. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 4, wherein: the main bearing side exhaust muffler (9) is processed with a turned edge (90) which is matched and sealed with an annular plane (83) on the main bearing (8), so that a cavity of the main bearing side exhaust muffler (9) is isolated from the low-pressure cavity (14) to form an independent cavity.
6. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: the matching part of the auxiliary bearing (12) and the cylinder (11) is of a non-circular structure, an auxiliary bearing exhaust hole (121) and an auxiliary bearing axial through hole (122) for communicating a cavity of the main bearing side muffler (9) with a cavity of the auxiliary bearing side muffler (13) are machined on the matching surface; a radial protruding part (123) of the auxiliary bearing (12) is immersed in the oil pool (16), an upper radial oil hole (124) is formed in the radial protruding part (123) of the auxiliary bearing and communicated with an unloading oil groove (125) in the auxiliary bearing (12), and an auxiliary bearing spiral oil groove (126) is formed in the inner surface of the auxiliary bearing (12).
7. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: the crankshaft (7) is of a solid eccentric structure, and a crankshaft spiral oil groove (70) is machined in the eccentric part of the crankshaft.
8. The horizontal rotary compressor for the air conditioner of the electric vehicle as claimed in claim 1, wherein: and a rotary sealing structure is added at the matching section of the main bearing (8) and the crankshaft (7) to reduce the oil output.
9. The operation method of the horizontal electric rotary compressor according to any one of claims 1 to 8, wherein first, the stator (5) of the motor is energized and started through the compressor controller (2), and the rotor (6) is rotated; the rotor (6) drives the crankshaft (7) to rotate, and the rotation of the crankshaft (7) drives the rolling piston (10) to eccentrically rotate in the cylinder (11);
the refrigerant flow in the working process is as follows: a low-pressure refrigerant at the outlet of an evaporator of an air conditioning system of the electric automobile enters a low-pressure cavity (14) from a low-pressure air suction pipe (3) on a shell (1), cools a compressor controller (2) on the outer side of the end face of the shell (1), and cools a motor through a gap between a stator (5) and a rotor (6); a low-pressure refrigerant enters a cylinder (11) through a gas suction structure (112), rotates along with a crankshaft (7), and is respectively discharged into a cavity of a main bearing side muffler (9) and a cavity of an auxiliary bearing muffler (13) through a main bearing exhaust hole (81) on a main bearing (8) and an auxiliary bearing exhaust hole (121) on an auxiliary bearing (12), wherein the high-pressure refrigerant in the cavity of the main bearing side muffler (9) sequentially passes through a main bearing axial through hole (82), a cylinder axial through hole (110) and an auxiliary bearing axial through hole (122) and enters the cavity of the auxiliary bearing muffler (13); finally, the refrigerant in the cavity of the auxiliary bearing silencer (13) flows into a high-pressure cavity (15), and then oil-gas separation is realized through a high-pressure exhaust cyclone separator (4) and the refrigerant is discharged out of the compressor;
the oil supply flow during work is as follows: lubricating oil in the oil pool (16) enters an unloading oil groove (125) from a radial oil hole (124) on the auxiliary bearing (12) under the action of the pressure difference of refrigerant in the cylinder (11) and the high-pressure cavity (15); with the rotation of the crankshaft (7), a part of the lubricating oil lubricates the auxiliary bearing (12) through the spiral oil groove (126) of the auxiliary bearing; the other part of lubricating oil is transferred to the side of the main bearing (8) from a crankshaft spiral oil groove (70) processed on the eccentric part of the crankshaft (7) to lubricate the rolling piston (10) and the eccentric part of the crankshaft (7), finally, under the action of pressure difference of refrigerants in the air cylinder (11) and the low-pressure cavity (14), the lubricating oil is transferred to the low-pressure cavity (14) to lubricate the main bearing (8), and the lubricating oil entering the low-pressure cavity (14) enters the air cylinder (11) along with air suction to realize oil return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999503.7A CN110617222B (en) | 2019-10-21 | 2019-10-21 | Horizontal rotary compressor for electric automobile air conditioner and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910999503.7A CN110617222B (en) | 2019-10-21 | 2019-10-21 | Horizontal rotary compressor for electric automobile air conditioner and working method |
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| CN110617222A true CN110617222A (en) | 2019-12-27 |
| CN110617222B CN110617222B (en) | 2023-10-24 |
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| CN114738276A (en) * | 2022-05-07 | 2022-07-12 | 浙江巨能压缩机有限公司 | Double-rotor compressor |
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|---|---|
| CN110617222B (en) | 2023-10-24 |
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