CN112963345A - Vortex type electric air-conditioning compressor - Google Patents
Vortex type electric air-conditioning compressor Download PDFInfo
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- CN112963345A CN112963345A CN202110240068.7A CN202110240068A CN112963345A CN 112963345 A CN112963345 A CN 112963345A CN 202110240068 A CN202110240068 A CN 202110240068A CN 112963345 A CN112963345 A CN 112963345A
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- compression unit
- shell
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- fixed scroll
- motor
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- 238000004378 air conditioning Methods 0.000 title abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 146
- 238000007906 compression Methods 0.000 claims abstract description 146
- 238000005192 partition Methods 0.000 claims abstract description 64
- 239000003507 refrigerant Substances 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
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Classifications
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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
- F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
- F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
- F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
The invention aims to provide a scroll type electric air-conditioning compressor, which comprises a shell, a motor, a first compression unit and a second compression unit, wherein the shell is provided with a first compression unit and a second compression unit; the motor, the first compression unit and the second compression unit are all arranged in the shell, the motor is positioned in the middle, and the second compression unit and the first compression unit are respectively positioned on the left side and the right side of the motor; two ends of an output shaft of the motor respectively penetrate through the partition plate a and the partition plate b to drive the first compression unit and the second compression unit; the shell is respectively provided with an air inlet and an air outlet; the air inlet is communicated with the air suction cavity of the first compression unit, the air outlet is communicated with the air exhaust cavity of the second compression unit, and the air exhaust cavity of the first compression unit is communicated with the air suction cavity of the second compression unit. The invention can well improve the volumetric efficiency, noise, energy efficiency ratio and reliability of the compressor compared with the prior scheme, and has good application prospect.
Description
Technical Field
The invention relates to the field of electric air-conditioning system compressors, in particular to a vortex type electric air-conditioning compressor.
Background
The scroll type electric compressor is superior to other types of electric compressors in energy efficiency ratio, vibration, noise and reliability, so that the scroll type electric compressor is widely applied to the field of electric air conditioning systems, particularly electric automobile air conditioning systems. The scroll type electric compressor is used in air conditioning system to convey refrigerant and raise the pressure of refrigerant.
The existing scroll type electric compressor for the air conditioning system of the electric automobile has the internal volume ratio of about 2.5 due to the limitation of the radial size, while the external pressure ratio of the air conditioning system of the electric automobile is about 5 under the normal climate refrigeration working condition, and can reach more than 8 when the electric automobile is refrigerated under the severe condition, for example, the external pressure ratio of the air conditioning system of the electric automobile is even more than 10 when the electric automobile is heated by the compressor under the winter condition in northern China. When the existing scroll type electric compressor is used for refrigerating under severe conditions or heating under winter conditions in northern China, the volume efficiency of the compressor is low due to large pressure difference between adjacent cavities and large leakage amount of refrigerant, the internal volume ratio of the compressor is far smaller than the external pressure ratio, airflow pulse is large, noise is large, the energy efficiency ratio is extremely low, the total performance is large noise and energy consumption, the effect of changing temperature in refrigerating or heating is poor, a client is uncomfortable, and the continuous journey of an electric automobile is seriously reduced. The above-mentioned reason is also one of the main reasons that electric vehicles are difficult to popularize in hot and cold regions.
Disclosure of Invention
The invention aims to provide a scroll type electric air-conditioning compressor, which can well improve the volume efficiency, noise, energy efficiency ratio and reliability of the compressor compared with the prior scheme and has good application prospect.
The technical scheme of the invention is as follows:
the scroll type electric air-conditioning compressor comprises a shell, a motor, a first compression unit and a second compression unit;
the motor, the first compression unit and the second compression unit are all arranged in the shell, the motor is positioned in the middle, and the second compression unit and the first compression unit are respectively positioned on the left side and the right side of the motor; two ends of an output shaft of the motor respectively penetrate through the partition plate a and the partition plate b to drive the first compression unit and the second compression unit;
the shell is respectively provided with an air inlet and an air outlet; the air inlet is communicated with the air suction cavity of the first compression unit, the air outlet is communicated with the air exhaust cavity of the second compression unit, and the air exhaust cavity of the first compression unit is communicated with the air suction cavity of the second compression unit.
A partition plate a is arranged between the first compression unit and the motor in the shell and divides the right space of the shell; a partition board b is arranged between the second compression unit and the motor in the shell and divides the left space of the shell; and a motor space is formed between the partition plate a and the partition plate b.
The air inlet is arranged on the shell and is communicated with the motor space; the partition plate a is provided with a through hole a which is communicated with the motor space and the air suction cavity of the first compression unit; the exhaust cavity of the first compression unit is connected with the suction cavity of the second compression unit through a channel; and the left end of the shell is provided with an exhaust port communicated with an exhaust cavity of the second compression unit.
The first compression unit comprises an anti-rotation mechanism a, a movable scroll a and a fixed scroll a, the fixed scroll a is fixedly arranged at the right end in the shell, the left end of the movable scroll a is matched and connected with a right end output shaft of the motor, and the right end of the movable scroll a extends into the fixed scroll a; the anti-rotation mechanism a is arranged between the partition plate a and the movable scroll plate a;
the second compression unit comprises an anti-rotation mechanism b, a movable scroll b and a fixed scroll b, the fixed scroll b is fixedly arranged at the left end in the shell, the right end of the movable scroll b is in fit connection with an output shaft at the left end of the motor, and the left end of the movable scroll b extends into the fixed scroll b; and the autorotation preventing mechanism b is arranged between the movable scroll plates b of the partition plate b.
The shell comprises a shell body, a left end cover and a right end cover, wherein two ends of the shell body are opened, the left end cover and the right end cover are respectively packaged on two ends of the shell body, and the partition plate a and the partition plate b are respectively arranged on two sides in the shell body; and the outer wall of the shell is provided with an air duct, and two ends of the air duct respectively extend to the left end cover and the right end cover and are respectively communicated with the first compression unit space exhaust cavity and the second compression unit air suction cavity.
The air inlet is positioned at the left end of the shell and is communicated with the air suction cavity of the first compression unit through a channel a; the exhaust cavity of the first compression unit is communicated with the suction cavity of the second compression unit through the motor space; and the left end of the shell is provided with an exhaust port communicated with an exhaust cavity of the second compression unit.
The first compression unit comprises an anti-rotation mechanism a, a movable scroll a and a fixed scroll a, the fixed scroll a is fixedly arranged at the right end in the shell, the left end of the movable scroll a is matched and connected with a right end output shaft of the motor, and the right end of the movable scroll a extends into the fixed scroll a; the channel a is arranged on the fixed scroll a and is used for communicating the air inlet with an air suction cavity formed by the movable scroll a and the fixed scroll a; the fixed scroll a is provided with a channel b, the left end of the channel b is communicated with a motor space, and the right end of the channel b is communicated with an exhaust cavity of a first compression unit formed by the movable scroll a and the fixed scroll a; the anti-rotation mechanism a is arranged between the partition plate a and the movable scroll plate a;
the second compression unit comprises an anti-rotation mechanism b, a movable scroll b and a fixed scroll b, the fixed scroll b is fixedly arranged at the left end in the shell, the right end of the movable scroll b is connected with the left end output shaft of the motor, and the left end of the movable scroll b extends into the fixed scroll b; the anti-rotation mechanism b is arranged between the movable scroll plates b of the partition plate b; and a through hole b is formed in the partition plate b and communicates the motor space with an air suction cavity formed by the movable vortex disc b and the fixed vortex disc b.
From the side of the orbiting scroll with which they are engaged, the direction of rotation of the spiral wall of the fixed scroll a from the outside to the inside is opposite to the direction of rotation of the spiral wall of the fixed scroll b from the outside to the inside.
The shell comprise a shell body, a left end cover and a right end cover, wherein the two ends of the shell body are open, the left end cover and the right end cover are respectively packaged at the two ends of the shell body, the partition plate a and the partition plate b are respectively arranged at the two sides in the shell body, and the air inlet is arranged at the right end cover.
The fixed scroll a is integrally covered at the right port of the shell, a space is reserved between the fixed scroll a and the left end surface of the right end cover, and an air outlet a communicated with spaces on two sides of the fixed scroll a is arranged at the center of the fixed scroll a;
the fixed scroll b is integrally covered at the left end opening of the shell, a space is reserved between the fixed scroll b and the right end face of the left end cover, and an air outlet b communicated with spaces on two sides of the fixed scroll b is arranged in the middle of the fixed scroll b.
The suction volume of the first compression unit space is set as Vs1, and the suction volume of the second compression unit space is set as Vs2, Vs1> Vs 2.
The ratio of the suction volume Vs1 of the first compression unit to the suction volume Vs2 of the second compression unit is as follows: 2 is less than or equal to Vs1/Vs2 is less than or equal to 3.
The invention provides a scroll type electric compressor, wherein a first compression unit and a second compression unit are respectively arranged at two ends of an output shaft of a motor, the compressor internal volume ratio formed by combining the two compression units is far larger than the internal volume ratio of the existing scroll type electric compressor, meanwhile, the total pressure difference of the compressor is distributed in the two compression units, so that the pressure difference between adjacent closed cavities of the two compression units is smaller than that of the existing scroll type electric compressor, and the load of the compressor is distributed in the two compression units, so that the load born by each compression unit is far smaller than that of the existing scroll type electric compressor. Therefore, the compressor provided by the invention can normally work under the severe refrigeration working condition and the heating working condition under the condition of winter in most of north China, and the volume efficiency, the noise, the energy efficiency ratio and the reliability of the compressor are all well improved compared with those of the conventional scheme.
When the compressor works, a refrigerant enters the air suction cavity of the first compression unit from the air inlet, enters the air suction cavity of the second compression unit after being compressed by the first compression unit, and enters the air conditioning system to work after being compressed by the second compression unit, so that combined operation is formed, and the internal volume ratio of the compressor is greatly improved.
The internal volume ratios of the first compression unit and the second compression unit of the present invention, ε v1 and ε v2, are more specifically ε v1 ≈ ε v2 ≈ Vs1/Vs2, so the internal volume ratio of the compressor is: ε v ≈ ε v1 × ε v 2. In the preferred scheme of the invention, when Vs1/Vs2 is more than or equal to 2 and less than or equal to 3, the range of the internal volume ratio of the compressor designed according to the invention is more than or equal to 4 and less than or equal to 9, and the normal operation of the air conditioning system of the electric automobile under the severe refrigerating working condition and the heating working condition in most northern winter of China can be well met.
Drawings
Fig. 1 is an overall structural schematic view of a scroll type electric air conditioner compressor according to embodiment 1 of the present invention;
fig. 2 is an overall structural schematic view of a scroll type electric air conditioner compressor according to embodiment 2 of the present invention;
FIG. 3 is a schematic view of the structure of a fixed scroll a and a fixed scroll b of the present invention;
FIG. 4 is a schematic diagram of the working principle of the present invention;
the names and serial numbers of the parts in the figure are as follows:
1-shell, 2-motor, 3-partition plate a, 4-partition plate b, 5-air inlet, 6-air vent pipeline, 7-air outlet, 8-autorotation prevention mechanism a, 9-movable scroll plate a, 10-fixed scroll plate a, 11-autorotation prevention mechanism b, 12-movable scroll plate b, 13-fixed scroll plate b, 14-shell, 15-left end cover, 16-right end cover, 17-air outlet a, 18-air outlet b, 19-pressure exhaust valve, 22-through hole a, 23-through hole b, 24-communicating pipeline a, 25-communicating pipeline b.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, 3 and 4, the scroll type electric air conditioner compressor includes a housing 1, a motor 2, a first compression unit and a second compression unit;
the motor 2, the first compression unit and the second compression unit are all arranged in the shell 1, the motor 2 is positioned in the middle, and the second compression unit and the first compression unit are respectively positioned on the left side and the right side of the motor 2; two ends of an output shaft of the motor 2 respectively penetrate through the partition plate a3 and the partition plate b4 to drive the first compression unit and the second compression unit;
the shell 1 is respectively provided with an air inlet 5 and an air outlet 7; the air inlet 5 is communicated with an air suction cavity of the first compression unit, the air outlet 7 is communicated with an air exhaust cavity of the second compression unit, and the air exhaust cavity of the first compression unit is communicated with the air suction cavity of the second compression unit.
A partition plate a3 is arranged between the first compression unit and the motor 2 in the shell 1, and the right space of the shell is separated by a partition plate a 3; a partition b4 is arranged between the second compression unit and the motor 2 in the shell 1, and the left space of the second compression unit is separated by a partition b 4; and a motor space is formed between the partition plate a3 and the partition plate b 4.
The air inlet 5 is arranged on the shell 14 and is communicated with the motor space; the partition plate a3 is provided with a through hole a22 which is communicated with the motor space and the air suction cavity of the first compression unit; the exhaust cavity of the first compression unit is connected with the suction cavity of the second compression unit through a channel 6; and the left end of the shell 1 is provided with an exhaust port 7 communicated with an exhaust cavity of the second compression unit.
The first compression unit comprises an anti-rotation mechanism a8, a movable scroll a9 and a fixed scroll a10, the fixed scroll a10 is fixedly arranged at the right end in the shell 1, the left end of the movable scroll a9 is connected with the right end output shaft of the motor 2 in a matching way, and the right end of the movable scroll a9 extends into the fixed scroll a 10; the anti-rotation mechanism a8 is arranged between the partition plate a3 and the movable scroll a 9;
the second compression unit comprises an anti-rotation mechanism b11, a movable scroll b12 and a fixed scroll b13, the fixed scroll b13 is fixedly arranged at the left end in the shell 1, the right end of the movable scroll b12 is connected with an output shaft at the left end of the motor 2 in a matched manner, and the left end of the movable scroll b12 extends into the fixed scroll b 13; the anti-rotation mechanism b11 is installed between the partition plate b4 movable scroll b 12.
The shell 1 comprises a shell 14, a left end cover 15 and a right end cover 16, wherein two ends of the shell 14 are open, the left end cover 15 and the right end cover 16 are respectively packaged at two ends of the shell 14, and the partition plate a3 and the partition plate b4 are respectively arranged at two sides in the shell 14; and the outer wall of the shell 14 is provided with an air duct 6, and two ends of the air duct 6 respectively extend to the left end cover 15 and the right end cover 16 and are respectively communicated with the first compression unit space exhaust cavity and the second compression unit air suction cavity.
As shown in fig. 3, when viewed from the orbiting scroll side where the orbiting scroll is engaged, the spiral direction of the spiral wall of the fixed scroll a10 from the outside to the inside is opposite to the spiral direction of the spiral wall of the fixed scroll b13 from the outside to the inside.
The shell 1 comprises a shell 14, a left end cover 15 and a right end cover 16, two ends of the shell 14 are open, the left end cover 15 and the right end cover 16 are respectively packaged at two ends of the shell 14, partition plates a3 and b4 are respectively arranged at two sides in the shell 14, and an air inlet 5 is arranged on the right end cover 16.
The fixed scroll a10 is integrally covered at the right port of the shell 14, a space is reserved between the fixed scroll a10 and the left end face of the right end cover 16, and the center of the fixed scroll a10 is provided with an air outlet a17 communicated with the spaces at two sides of the fixed scroll a 10;
the fixed scroll b13 is integrally covered at the left end of the shell 14, a space is reserved between the fixed scroll b13 and the right end face of the left end cover 15, and an air outlet b18 communicated with spaces on two sides of the fixed scroll b13 is arranged in the middle of the fixed scroll b 13.
And a pressure exhaust valve 19 is respectively arranged at a gas outlet b18 on the left end surface of the fixed scroll b13 and a gas outlet a17 on the right end surface of the fixed scroll a 10.
The suction volume of the first compression unit space is set as Vs1, and the suction volume of the second compression unit space is set as Vs2, Vs1> Vs 2.
The ratio of the suction volume Vs1 of the first compression unit to the suction volume Vs2 of the second compression unit is as follows: 2 is less than or equal to Vs1/Vs2 is less than or equal to 3.
Example 2
As shown in fig. 2, 3 and 4, the scroll type electric air conditioner compressor includes a housing 1, a motor 2, a first compression unit and a second compression unit;
the motor 2, the first compression unit and the second compression unit are all arranged in the shell 1, the motor 2 is positioned in the middle, and the second compression unit and the first compression unit are respectively positioned on the left side and the right side of the motor 2; two ends of an output shaft of the motor 2 respectively penetrate through the partition plate a3 and the partition plate b4 to drive the first compression unit and the second compression unit;
the shell 1 is respectively provided with an air inlet 5 and an air outlet 7; the air inlet 5 is communicated with an air suction cavity of the first compression unit, the air outlet 7 is communicated with an air exhaust cavity of the second compression unit, and the air exhaust cavity of the first compression unit is communicated with the air suction cavity of the second compression unit.
A partition plate a3 is arranged between the first compression unit and the motor 2 in the shell 1, and the right space of the shell is separated by a partition plate a 3; a partition b4 is arranged between the second compression unit and the motor 2 in the shell 1, and the left space of the second compression unit is separated by a partition b 4; and a motor space is formed between the partition plate a3 and the partition plate b 4.
The air inlet 5 is positioned at the left end of the shell 1 and is communicated with the air suction cavity of the first compression unit through a channel a 24; the exhaust cavity of the first compression unit is communicated with the suction cavity of the second compression unit through the motor space; and the left end of the shell 1 is provided with an exhaust port 7 communicated with an exhaust cavity of the second compression unit.
The first compression unit comprises an anti-rotation mechanism a8, a movable scroll a9 and a fixed scroll a10, the fixed scroll a10 is fixedly arranged at the right end in the shell 1, the left end of the movable scroll a9 is connected with the right end output shaft of the motor 2 in a matching way, and the right end of the movable scroll a9 extends into the fixed scroll a 10; the channel a24 is arranged on the fixed scroll a10 and is used for communicating the air inlet 5 with an air suction cavity formed by the movable scroll a9 and the fixed scroll a 10; the fixed scroll a10 is provided with a channel b25, the left end of the channel b25 is communicated with a motor space, and the right end of the channel b25 is communicated with an exhaust cavity of a first compression unit formed by the movable scroll a9 and the fixed scroll a 10; the anti-rotation mechanism a8 is arranged between the partition plate a3 and the movable scroll a 9;
the second compression unit comprises an anti-rotation mechanism b11, a movable scroll b12 and a fixed scroll b13, the fixed scroll b13 is fixedly arranged at the left end in the shell 1, the right end of the movable scroll b12 is connected with the left end output shaft of the motor 2, and the left end of the movable scroll b12 extends into the fixed scroll b 13; the anti-rotation mechanism b11 is arranged between the partition plate b4 movable scroll b 12; the partition plate b4 is provided with a through hole b23, and the through hole b23 is used for communicating the motor space with a suction cavity formed by the movable scroll b12 and the fixed scroll b 13.
As shown in fig. 3, when viewed from the orbiting scroll side where the orbiting scroll is engaged, the spiral direction of the spiral wall of the fixed scroll a10 from the outside to the inside is opposite to the spiral direction of the spiral wall of the fixed scroll b13 from the outside to the inside.
The shell 1 comprises a shell 14, a left end cover 15 and a right end cover 16, two ends of the shell 14 are open, the left end cover 15 and the right end cover 16 are respectively packaged at two ends of the shell 14, partition plates a3 and b4 are respectively arranged at two sides in the shell 14, and an air inlet 5 is arranged on the right end cover 16.
The fixed scroll a10 is integrally covered at the right port of the shell 14, a space is reserved between the fixed scroll a10 and the left end face of the right end cover 16, and the center of the fixed scroll a10 is provided with an air outlet a17 communicated with the spaces at two sides of the fixed scroll a 10;
the fixed scroll b13 is integrally covered at the left end of the shell 14, a space is reserved between the fixed scroll b13 and the right end face of the left end cover 15, and an air outlet b18 communicated with spaces on two sides of the fixed scroll b13 is arranged in the middle of the fixed scroll b 13.
And a pressure exhaust valve 19 is respectively arranged at a gas outlet b18 on the left end surface of the fixed scroll b13 and a gas outlet a17 on the right end surface of the fixed scroll a 10.
The first compression unit space has a suction volume of Vs1, and the second compression unit space has a suction volume of Vs2, Vs1> Vs 2.
The ratio of the suction volume Vs1 of the first compression unit to the suction volume Vs2 of the second compression unit is as follows: 2 is less than or equal to Vs1/Vs2 is less than or equal to 3.
The working process of the invention is as follows:
the motor 2 drives the output shaft to rotate, and under the action of the autorotation prevention mechanism 9, the motor shaft drives the movable scroll a9 to wind around the fixed scroll a10, and the movable scroll b12 to wind around the fixed scroll b13, and the movable scroll and the fixed scroll respectively make circular translation.
Taking the movable scroll a9 around the fixed scroll a10 as an example, the suction process is as shown in fig. 4a, the area shown by the hatching is communicated with the air inlet 5, the communicated cavity is called a suction cavity, the pressure of the suction cavity is the pressure of the air inlet of the compressor and is indicated by Ps, and refrigerant enters the cavity formed by the movable scroll a9 and the fixed scroll a10 from the suction cavity; the movable scroll a9 moves from the state of fig. 4a to the state of fig. 4b along the motion trail, the movable scroll a9 and the fixed scroll a10 form a maximum enclosed volume chamber at the outer edge as shown by the hatched portion of fig. 4b, and the volume contained in the maximum enclosed volume chamber is called the suction volume and is indicated by Vs; the follower scroll a9 continues to move, the maximum enclosed volume cavity continuously moves from the outside to the center of the fixed scroll a10, the volume is continuously reduced, and the refrigerant pressure is increased as shown by the shaded part in fig. 4 c; the movable scroll a9 continues to move around the fixed scroll a10 along the movement locus, the closed volume formed at the moment when the closed volume chamber moves from the outside of the fixed scroll a10 to the center part thereof to the moment when the closed volume chamber is just communicated with the air outlet a17 is called the exhaust volume and is shown as Vd, the state is shown in fig. 4d, the internal volume ratio of the compressor is shown as epsilon v, and the internal volume ratio of the compressor is epsilon v = Vs/Vd; the orbiting scroll a9 shown in fig. 4d continues to follow the corresponding trajectory and the refrigerant is discharged, as shown in fig. 4e, where the chamber in the compressor in communication with the outlet port 15 is referred to as the discharge chamber.
The operation of the orbiting scroll b12 around the fixed scroll b13 is the same as the above-mentioned operation, and will not be described again.
When the pressure of the refrigerant in the closed volume cavity at the central part of the compressor is greater than the sum of the pressure (represented by Pd) at the outlet of the compressor and the resistance of the pressure exhaust valve 19, the pressure exhaust valve 19 is opened, the closed cavity at the central part is communicated with the exhaust port 7, and the refrigerant is discharged out of the compressor and enters the system to work.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", and the like are used in the orientation or positional relationship shown in fig. 1 for convenience of description and simplicity of operation only, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
Claims (12)
1. The utility model provides a vortex formula electric air conditioner compressor, includes shell (1), motor (2), first compression unit, second compression unit, its characterized in that:
the motor (2), the first compression unit and the second compression unit are all arranged in the shell (1), the motor (2) is positioned in the middle, and the second compression unit and the first compression unit are respectively positioned on the left side and the right side of the motor (2); two ends of an output shaft of the motor (2) respectively penetrate through the partition plate a (3) and the partition plate b (4) to drive the first compression unit and the second compression unit;
the shell (1) is respectively provided with an air inlet (5) and an air outlet (7); the air inlet (5) is communicated with an air suction cavity of the first compression unit, the air outlet (7) is communicated with an air discharge cavity of the second compression unit, and the air discharge cavity of the first compression unit is communicated with the air suction cavity of the second compression unit.
2. The scroll type electric air conditioner compressor as set forth in claim 1, wherein:
a partition plate a (3) is arranged between the first compression unit and the motor (2) in the shell (1), and the right space of the shell is separated by the partition plate a (3); a partition board b (4) is arranged between the second compression unit and the motor (2) in the shell (1), and the partition board b (4) separates the left space of the shell; and a motor space is formed between the partition plate a (3) and the partition plate b (4).
3. The scroll type electric air conditioner compressor as set forth in claim 2, wherein:
the air inlet (5) is arranged on the shell (14) and is communicated with the motor space; the partition plate a (3) is provided with a through hole a (22) for communicating the motor space with the air suction cavity of the first compression unit; the exhaust cavity of the first compression unit is connected with the suction cavity of the second compression unit through a channel (6); and the left end of the shell (1) is provided with an exhaust port (7) communicated with an exhaust cavity of the second compression unit.
4. The scroll type electric air conditioner compressor as set forth in claim 3, wherein:
the first compression unit comprises an anti-rotation mechanism a (8), a movable scroll a (9) and a fixed scroll a (10), the fixed scroll a (10) is fixedly arranged at the right end in the shell (1), the left end of the movable scroll a (9) is in fit connection with an output shaft at the right end of the motor (2), and the right end of the movable scroll a (9) extends into the fixed scroll a (10); the anti-rotation mechanism a (8) is arranged between the partition plate a (3) and the movable scroll a (9);
the second compression unit comprises an anti-rotation mechanism b (11), a movable scroll b (12) and a fixed scroll b (13), the fixed scroll b (13) is fixedly arranged at the left end in the shell (1), the right end of the movable scroll b (12) is in fit connection with an output shaft at the left end of the motor (2), and the left end of the movable scroll b (12) extends into the fixed scroll b (13); the anti-rotation mechanism b (11) is arranged between the movable scroll b (12) of the partition board b (4).
5. The scroll type electric air conditioner compressor as set forth in claim 3, wherein:
the shell (1) comprises a shell (14), a left end cover (15) and a right end cover (16), wherein two ends of the shell (14) are open, the left end cover (15) and the right end cover (16) are respectively packaged on two ends of the shell (14), and the partition plate a (3) and the partition plate b (4) are respectively arranged on two sides in the shell (14); the outer wall of the shell (14) is provided with a vent pipe (6), and two ends of the vent pipe (6) respectively extend to a left end cover (15) and a right end cover (16) and are respectively communicated with a first compression unit space exhaust cavity and a second compression unit air suction cavity.
6. The scroll type electric air conditioner compressor as set forth in claim 2, wherein:
the air inlet (5) is positioned at the left end of the shell (1) and is communicated with an air suction cavity of the first compression unit through a channel a (24); the exhaust cavity of the first compression unit is communicated with the suction cavity of the second compression unit through the motor space; and the left end of the shell (1) is provided with an exhaust port (7) communicated with an exhaust cavity of the second compression unit.
7. The scroll type electric air conditioner compressor as set forth in claim 6, wherein:
the first compression unit comprises an anti-rotation mechanism a (8), a movable scroll a (9) and a fixed scroll a (10), the fixed scroll a (10) is fixedly arranged at the right end in the shell (1), the left end of the movable scroll a (9) is in fit connection with an output shaft at the right end of the motor (2), and the right end of the movable scroll a (9) extends into the fixed scroll a (10); the channel a (24) is arranged on the fixed scroll a (10) and is used for communicating the air inlet (5) with an air suction cavity formed by the movable scroll a (9) and the fixed scroll a (10); the fixed scroll a (10) is provided with a channel b (25), the left end of the channel b (25) is communicated with a motor space, and the right end of the channel b (25) is communicated with an exhaust cavity of a first compression unit formed by the movable scroll a (9) and the fixed scroll a (10); the anti-rotation mechanism a (8) is arranged between the partition plate a (3) and the movable scroll a (9);
the second compression unit comprises an anti-rotation mechanism b (11), a movable scroll b (12) and a fixed scroll b (13), the fixed scroll b (13) is fixedly arranged at the left end in the shell (1), the right end of the movable scroll b (12) is connected with the left end output shaft of the motor (2), and the left end of the movable scroll b (12) extends into the fixed scroll b (13); the anti-rotation mechanism b (11) is arranged between the movable scroll b (12) of the partition board b (4); and a through hole b (23) is formed in the partition plate b (4), and the motor space is communicated with a suction cavity formed by the movable scroll b (12) and the fixed scroll b (13) through the through hole b (23).
8. The scroll type electric air conditioner compressor as set forth in claim 7, wherein: from the side of the orbiting scroll with which they are engaged, the direction of rotation from the outside to the inside of the spiral wall of the fixed scroll a (10) is opposite to the direction of rotation from the outside to the inside of the spiral wall of the fixed scroll b (13).
9. The scroll type electric air conditioner compressor as set forth in claim 6, wherein:
the shell (1) comprises a shell (14), a left end cover (15) and a right end cover (16), wherein the two ends of the shell (14) are open, the left end cover (15) and the right end cover (16) are respectively packaged at the two ends of the shell (14), a partition plate a (3) and a partition plate b (4) are respectively arranged at the two sides in the shell (14), and an air inlet (5) is arranged on the right end cover (16).
10. The scroll type electric air conditioner compressor as set forth in claim 3 or 6, wherein:
the fixed scroll a (10) is integrally covered at the right port of the shell (14), a space is reserved between the fixed scroll a (10) and the left end surface of the right end cover (16), and an air outlet a (17) communicated with the spaces at two sides of the fixed scroll a (10) is arranged at the center of the fixed scroll a (10);
the fixed scroll b (13) is integrally covered at the left end of the shell (14), a space is reserved between the fixed scroll b (13) and the right end face of the left end cover (15), and an air outlet b (18) communicated with the spaces on two sides of the fixed scroll b (13) is arranged in the middle of the fixed scroll b (13).
11. The scroll type electric air conditioner compressor as set forth in claim 1, wherein: the suction volume of the first compression unit space is set as Vs1, and the suction volume of the second compression unit space is set as Vs2, Vs1> Vs 2.
12. The scroll type electric air conditioner compressor as set forth in claim 13, wherein: the ratio of the suction volume Vs1 of the first compression unit to the suction volume Vs2 of the second compression unit is as follows: 2 is less than or equal to Vs1/Vs2 is less than or equal to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240068.7A CN112963345A (en) | 2021-03-04 | 2021-03-04 | Vortex type electric air-conditioning compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240068.7A CN112963345A (en) | 2021-03-04 | 2021-03-04 | Vortex type electric air-conditioning compressor |
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| Publication Number | Publication Date |
|---|---|
| CN112963345A true CN112963345A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110240068.7A Pending CN112963345A (en) | 2021-03-04 | 2021-03-04 | Vortex type electric air-conditioning compressor |
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| Country | Link |
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| CN (1) | CN112963345A (en) |
Cited By (1)
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| CN116816669A (en) * | 2023-08-30 | 2023-09-29 | 沈阳海龟医疗科技有限公司 | Floating oil-free vacuum scroll compressor |
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Application publication date: 20210615 |