CN210564945U - Novel refrigeration compressor - Google Patents
Novel refrigeration compressor Download PDFInfo
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- CN210564945U CN210564945U CN201920836949.3U CN201920836949U CN210564945U CN 210564945 U CN210564945 U CN 210564945U CN 201920836949 U CN201920836949 U CN 201920836949U CN 210564945 U CN210564945 U CN 210564945U
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Abstract
The utility model discloses a novel refrigeration compressor belongs to compression refrigeration technology field. The novel refrigeration compressor comprises a cylinder, a piston, a connecting rod, a suction valve, an exhaust valve, an intercooler and a connecting pipeline. The compressor is provided with six stages of cylinders and three pistons, the cylinders are connected through the axes of the pistons by connecting rods, the continuous compression of gas is realized through the movement of the pistons, and meanwhile, an intercooler is arranged between the two stages of cylinders, so that the overhigh temperature is avoided, and the specific volume of the gas can be reduced. According to the utility model discloses a multistage compression can be realized to the compressor, and then reduces exhaust temperature, improves the unit refrigeration volume and the unit volume refrigeration volume of compressor, reduces the compressor energy consumption, improves the coefficient of refrigeration.
Description
Technical Field
The utility model belongs to the technical field of the compression refrigeration, particularly, relate to a novel refrigeration compressor.
Background
The refrigeration compressor is the main equipment in the compression type refrigeration system, and is used for lifting low-pressure gas into high-pressure gas, and is the heart of the refrigeration system. The refrigerant gas of low temperature and low pressure is sucked from the air suction pipe, and after being compressed, the refrigerant gas of high temperature and high pressure is discharged from the air discharge pipe, so as to provide power for the refrigeration cycle. In many applications, the compressor is operated at a high compression ratio. If a single stage compression is used, many problems arise, such as: the exhaust temperature is increased, and equipment is easily damaged due to overhigh temperature; the viscosity of the lubricating oil decreases along with the temperature rise, and the lubricating oil with high ignition point must be adopted; the unit refrigerating capacity and the unit volume refrigerating capacity of the compressor are greatly reduced; the power consumption of the compressor increases and the refrigeration coefficient decreases. Thus, when the compression ratio is too high, it is uneconomical or even impossible to use a single stage compression cycle. In order to solve the above problems and meet the production requirements, in practice, multi-stage compression is often adopted, the pressure of the gas is gradually increased in stages, the gas is continuously compressed in several cylinders in sequence, and meanwhile, in order to avoid overhigh temperature and reduce the specific volume of the gas so as to reduce the compression work consumed by the next stage, the gas is introduced into an intercooler for cooling after the compression of the previous stage, and then enters the cylinder of the next stage to continue to be compressed until the required pressure is reached. The multi-stage compression can reduce the exhaust temperature and reduce the damage to equipment; after being compressed by the previous stage, the compressed gas passes through an intercooler to reduce the temperature, so that the compressed gas is easy to further compress, and the power consumption is saved; in addition, by adopting multi-stage compression, the compression ratio of each stage is very small, so that the effective volume of the cylinder can be increased, and the utilization rate of the volume of the cylinder is improved. However, the multi-stage compression also causes problems such as an increase in the structural complexity of the compressor, an increase in the operation cost, and the like.
In the prior art, patent CN201710725978.8 proposes a novel multistage compressor, which is provided with a first-stage compression part and a second-stage compression part, each of which has an air inlet and an air outlet, and an interstage return pipe is provided to communicate the first-stage air outlet and the second-stage air inlet, so that the compressed air in the first-stage compression part can flow into the interstage return pipe from the first-stage air outlet, then flow into the second-stage air inlet through the interstage return pipe, and flow into the second-stage compression part from the second-stage air inlet for further compression. The flow equalizing device is arranged in the interstage return pipe, so that the airflow state of the interstage return pipe can be improved, the working efficiency of the two-stage compression part is improved, and the efficiency of the multi-stage compressor is also improved. Patent CN201420295304.0 also proposes a multistage compressor, which is provided with three-stage cylinders, and can avoid excessive pressure pulsation of the middle cavity caused by gas accumulation in the middle cavities of the front-stage cylinder and the rear-stage cylinder, and ensure the continuity of air suction of the front-stage cylinder and the rear-stage cylinder, thereby improving the performance of the multistage compressor, but the compressor has a complex structure and a large floor area.
In view of the above, the utility model provides a novel refrigeration compressor, including cylinder, piston, connecting rod, suction valve, discharge valve, intercooler and connecting tube. The compressor is a cylinder, and the occupied area is reduced to the maximum extent. The compressor is provided with six stages of cylinders and three pistons, the cylinders are connected through the axes of the pistons by connecting rods, the continuous compression of gas is realized through the movement of the pistons, and meanwhile, an intercooler is arranged between the two stages of cylinders, so that the overhigh temperature is avoided, and the specific volume of the gas can be reduced. The compressor is simple in structure, can realize multi-stage compression, further reduces exhaust temperature, improves unit refrigerating capacity and unit volume refrigerating capacity of the compressor, reduces energy consumption of the compressor, and improves refrigerating coefficient.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: the novel refrigeration compressor is provided with a six-stage cylinder and three pistons, the pistons are connected through the axes of the pistons by connecting rods, the continuous compression of gas is realized through the movement of the pistons, and meanwhile, an intercooler is arranged between the two stages of cylinders, so that the overhigh temperature is avoided, and the specific volume of the gas can be reduced. The compressor has a simple structure, can realize multi-stage compression, can reduce the energy consumption of the compressor and improve the refrigeration coefficient.
In order to solve the technical problem, the embodiment of the utility model provides an adopt following technical scheme:
the air conditioner comprises a first cylinder, a first air inlet, a first exhaust port, a first air inlet valve, a first exhaust valve, a second cylinder, a second air inlet, a second exhaust port, a second air inlet valve, a second exhaust valve, a third cylinder, a third air inlet, a third exhaust port, a third air inlet valve, a third exhaust valve, a fourth cylinder, a fourth air inlet, a fourth exhaust port, a fourth air inlet valve, a fourth exhaust valve, a fifth cylinder, a fifth air inlet, a fifth exhaust port, a fifth air inlet valve, a fifth exhaust valve, a sixth cylinder, a sixth air inlet, a sixth exhaust port, a sixth air inlet valve, a sixth exhaust valve, a piston, a connecting rod, a first intercooler, a second intercooler, a third intercooler, a fourth intercooler, a fifth intercooler, an air suction pipe and an exhaust pipe.
As a preferred example, the system mainly has the following contents in terms of the connection of the pipe sections:
the output end of the evaporator (d) is connected with the input end of the air suction pipe (001), the output end of the air suction pipe (001) is connected with the air inlet (101) of the first cylinder (1), the exhaust port (102) of the first cylinder (1) is connected with the input end (701) of the first intercooler (7), the output end (702) of the first intercooler (7) is connected with the air inlet (201) of the second cylinder (2), the exhaust port (202) of the second-stage cylinder (2) is connected with the input end (801) of the second intercooler (8), the output end (802) of the second intercooler (8) is connected with the air inlet (301) of the third cylinder (3), the exhaust port (302) of the third cylinder (3) is connected with the input end (901) of the third intercooler (9), the output end (902) of the third intercooler (9) is connected with the air inlet (401) of the fourth cylinder (4), an exhaust port (402) of a fourth cylinder (4) is connected with an input end (1001) of a fourth intercooler (10), an output end (1002) of the fourth intercooler (10) is connected with an air inlet (501) of a fifth cylinder (5), an exhaust port (502) of the fifth cylinder (5) is connected with an input end (1101) of a fifth intercooler (11), an output end (1102) of the fifth intercooler (11) is connected with an air inlet (601) of a sixth cylinder (6), an exhaust port (602) of the sixth cylinder (6) is connected with an input end of an exhaust pipe (002), an output end of the exhaust pipe (002) is connected with an input end of a condenser (b), an output end of the condenser (b) is connected with an input end of an expansion valve (c), and an output end of the expansion valve (c) is connected with an input end of an evaporator (d), so that a complete loop is formed.
Preferably, the novel refrigeration compressor works by continuously changing the working volume formed by the cylinder, the air valve and the piston reciprocating in the cylinder, and comprises air suction, compression and air exhaust.
Preferably, the pistons A, B and C are connected through an axle center, the connecting rod D is connected with the axle center of the piston A and the axle center of the piston B, the connecting rod E is connected with the axle center of the connecting rod D and the axle center of the piston C, and the piston is made of aluminum alloy or cast iron;
the piston and the connecting rod are connected in a concave-convex part combined mode, the axis of the piston is a concave part, and two ends of the connecting rod are convex parts; or the axis of the piston is a protruded part, the two ends of the connecting rod are recessed parts, and the movement of the piston can be realized through the driving of the connecting rod.
Preferably, the first cylinder (1), the second cylinder (2) and the third cylinder (3) are low pressure cylinders, the fourth cylinder (4), the fifth cylinder (5) and the sixth cylinder (6) are high pressure cylinders, a first intercooler (7) is provided between the first cylinder (1) and the second cylinder (2), a second intercooler (8) is provided between the second cylinder (2) and the third cylinder (3), a third intercooler (9) is provided between the third cylinder (3) and the fourth cylinder (4), a fourth intercooler (10) is provided between the fourth cylinder (4) and the fifth cylinder (5), and a fifth intercooler (11) is provided between the fifth cylinder (5) and the sixth cylinder (6).
Preferably, under the drive of the connecting rod, the piston A enters the first cylinder (1) to compress the refrigerant in the cylinder body, the piston B is arranged outside the second cylinder (2), the piston C is arranged outside the sixth cylinder (6), the working volume in the first cylinder (1) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p1When the valve is opened, the first exhaust valve (104) is automatically opened to start exhaust at the pressure p1Into the first intercooler (7);
refrigerant vapor from the first intercooler (7) enters the second cylinder (2) through the second air inlet valve (203), the piston B enters the second cylinder (2) under the drive of the connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the first cylinder (1), the piston C is outside the third cylinder (3), the working volume in the second cylinder (2) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p2Then, the second exhaust valve (204) is automatically opened to start exhausting at a pressure p2Into the second intercooler (8);
refrigerant vapor from the second intercooler (8) enters a third cylinder (3) through a third air inlet valve (303), a piston C enters the third cylinder (3) under the drive of a connecting rod to compress refrigerant in a cylinder body, a piston A is outside a fourth cylinder (4), a piston B is outside a second cylinder (2), the working volume in the third cylinder (3) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p3At the same time, the third exhaust valve (304) is automatically opened to start exhausting, and the pressure is p3Into the third intercooler (9);
refrigerant vapor from the third intercooler (9) enters the fourth cylinder (4) through the fourth air inlet valve (403), the piston A enters the fourth cylinder (4) under the drive of the connecting rod to compress the refrigerant in the cylinder body, the piston B is outside the fifth cylinder (5), the piston C is outside the third cylinder (3), the working volume in the fourth cylinder (4) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p4At the same time, the fourth exhaust valve (404) is automatically opened to start exhaustPressure p4Into a fourth intercooler (10);
refrigerant vapor from the fourth intercooler (10) enters a fifth cylinder (5) through a fifth air inlet valve (503), a piston B enters the fifth cylinder (5) under the driving of a connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the fourth cylinder (4), the piston C is outside the sixth cylinder (6), the working volume in the fifth cylinder (5) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p5At the same time, the fifth exhaust valve (504) is automatically opened to start exhausting at the pressure p5Into a fifth intercooler (11);
refrigerant vapor from the fifth intercooler (11) enters a sixth cylinder (6) through a sixth air inlet valve (603), a piston C enters the sixth cylinder (6) under the drive of a connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the first cylinder (1), the piston B is outside the fifth cylinder (5), the working volume in the sixth cylinder (6) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p6Then, the sixth exhaust valve (604) is automatically opened to start exhausting at a pressure p6Enters the condenser through the exhaust pipe (002).
As a preferred example, during the operation of the compressor, the end E1 of the connecting rod E moves along an elliptical trajectory:
when the piston A starts to carry out primary compression on the refrigerant of the first cylinder (1), the connecting rod E and the piston C are in the same straight line, the previous compression is just finished, E1 is at the end point of the long shaft of the ellipse, and when the primary compression is finished, the connecting rod E moves by 1/6 of the ellipse distance;
after the first-stage compression is finished, the piston B starts to carry out second-stage compression on the refrigerant of the second cylinder (2), and the end point E1 moves by 1/3 of an elliptical distance;
after the secondary compression is finished, the piston C starts to perform three-stage compression on the refrigerant of the third cylinder (3), at the moment, the connecting rod E and the piston C are on the same straight line, E1 is at the other end point of the long shaft of the ellipse, and the end point E1 passes through 1/2 of the ellipse distance;
after the three-stage compression is finished, the piston A starts to perform four-stage compression on the refrigerant of the fourth cylinder (4), and the end point E1 moves by 2/3 of an elliptical distance;
after the four-stage compression is finished, the piston B starts to perform five-stage compression on the refrigerant of the fifth cylinder (5), and the end point E1 moves by 5/6 of an elliptical distance;
after the five-stage compression is completed, the piston C starts six-stage compression of the refrigerant in the sixth cylinder (6), and the end point E1 travels the entire elliptical distance and is ready to start the next compression cycle.
Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has: the embodiment of the utility model provides a compressor includes cylinder, piston, connecting rod, suction valve, discharge valve, intercooler and connecting tube. The compressor is provided with six stages of cylinders and three pistons, the cylinders are connected through the axes of the pistons by connecting rods, the continuous compression of gas is realized through the movement of the pistons, and meanwhile, an intercooler is arranged between the two stages of cylinders, so that the overhigh temperature is avoided, and the specific volume of the gas can be reduced. The compressor is a cylinder, and the occupied area is reduced to the maximum extent. The compressor is simple in structure, can realize multi-stage compression, further reduces exhaust temperature, improves unit refrigerating capacity and unit volume refrigerating capacity of the compressor, reduces energy consumption of the compressor, and improves refrigerating coefficient.
Drawings
FIGS. 1 and 2 are schematic views of a novel refrigeration compressor;
reference number designations in the drawings: 1. a first cylinder; 101. a first air inlet; 102. a first exhaust port; 103. a first intake valve; 104. a first exhaust valve; 2. a second cylinder; 201. a second air inlet; 202. a second exhaust port; 203. a second intake valve; 204. a second exhaust valve; 3. a third cylinder; 301. a third air inlet; 302. a third exhaust port; 303. a third air inlet valve; 304. a third exhaust valve; 4. a fourth cylinder; 401. a fourth air inlet; 402. a fourth exhaust port; 403. a fourth intake valve; 404. a fourth exhaust valve; 5. a fifth cylinder; 501. a fifth air inlet; 502. a fifth exhaust port; 503. a fifth intake valve; 504. a fifth exhaust valve; 6. a sixth cylinder; 601. a sixth air inlet; 602. a sixth exhaust port; 603. a sixth intake valve; 604. a sixth exhaust valve; A. a piston; B. a piston; C. a piston; D. a connecting rod; E. a connecting rod; 7. a first intercooler; 8. a second intercooler; 9. a third intercooler; 10. a fourth intercooler; 11. a fifth intercooler; 001. An air intake duct; 002. and (4) exhausting the gas.
FIG. 3 is a schematic diagram of a refrigeration system.
Fig. 4 is a sectional view of a cylinder in the novel refrigeration compressor.
Figure 5 is a graph of the operating pressure enthalpy of the novel refrigeration compressor.
Detailed Description
As shown in fig. 1, the utility model relates to a novel refrigeration compressor, which comprises a compressor body 1 and a first cylinder; 101. a first air inlet; 102. a first exhaust port; 103. a first intake valve; 104. a first exhaust valve; 2. a second cylinder; 201. a second air inlet; 202. a second exhaust port; 203. a second intake valve; 204. a second exhaust valve; 3. a third cylinder; 301. a third air inlet; 302. a third exhaust port; 303. a third air inlet valve; 304. a third exhaust valve; 4. a fourth cylinder; 401. a fourth air inlet; 402. a fourth exhaust port; 403. a fourth intake valve; 404. a fourth exhaust valve; 5. a fifth cylinder; 501. a fifth air inlet; 502. a fifth exhaust port; 503. a fifth intake valve; 504. a fifth exhaust valve; 6. a sixth cylinder; 601. a sixth air inlet; 602. a sixth exhaust port; 603. a sixth intake valve; 604. a sixth exhaust valve; A. a piston; B. a piston; C. a piston; D. a connecting rod; E. a connecting rod; 7. a first intercooler; 8. a second intercooler; 9. a third intercooler; 10. A fourth intercooler; 11. a fifth intercooler; 001. an air intake duct; 002. and (4) exhausting the gas.
The refrigerant in the device needs to complete circulation, and the connection mode needs to meet the following points: the output end of the evaporator d is connected with the input end of a suction pipe 001, the output end of the suction pipe 001 is connected with the inlet 101 of the first cylinder 1, the outlet 102 of the first cylinder 1 is connected with the input 701 of the first intercooler 7, the output end 702 of the first intercooler 7 is connected with the inlet 201 of the second cylinder 2, the outlet 202 of the second-stage cylinder 2 is connected with the input 801 of the second intercooler 8, the output end 802 of the second intercooler 8 is connected with the inlet 301 of the third cylinder 3, the outlet 302 of the third cylinder 3 is connected with the input 901 of the third intercooler 9, the output end 902 of the third intercooler 9 is connected with the inlet 401 of the fourth cylinder 4, the outlet 402 of the fourth cylinder 4 is connected with the input 1001 of the fourth intercooler 10, the output end 1002 of the fourth intercooler 10 is connected with the inlet 501 of the fifth cylinder 5, the outlet 502 of the fifth cylinder 5 is connected with the input of the fifth intercooler 11, the output 1102 of the fifth intercooler 11) is connected to the intake 601 of the sixth cylinder 6, the exhaust 602 of the sixth cylinder 6 is connected to the input of the exhaust pipe 002, the output of the exhaust pipe 002 is connected to the input of the condenser b, the output of the condenser b is connected to the input of the expansion valve c, and the output of the expansion valve c is connected to the input of the evaporator d, forming a complete loop.
The work of the novel refrigeration compressor is completed by the continuous change of the working volume formed by the cylinder, the air valve and the piston reciprocating in the cylinder, and the work is divided into air suction, compression and air exhaust.
The pistons A, B and C are connected through the axes, the connecting rod D connects the axes of the piston A and the piston B, the connecting rod E connects the axes of the connecting rod D and the piston C, the piston is made of aluminum alloy or cast iron;
the piston and the connecting rod are connected in a concave-convex part combined mode, the axis of the piston is a concave part, and two ends of the connecting rod are convex parts; or the axis of the piston is a protruded part, the two ends of the connecting rod are recessed parts, and the movement of the piston can be realized through the driving of the connecting rod.
The first cylinder 1, the second cylinder 2 and the third cylinder 3 are low pressure cylinders, the fourth cylinder 4, the fifth cylinder 5 and the sixth cylinder 6 are high pressure cylinders, a first intercooler 7 is provided between the first cylinder 1 and the second cylinder 2, a second intercooler 8 is provided between the second cylinder 2 and the third cylinder 3, a third intercooler 9 is provided between the third cylinder 3 and the fourth cylinder 4, a fourth intercooler 10 is provided between the fourth cylinder 4 and the fifth cylinder 5, and a fifth intercooler 11 is provided between the fifth cylinder 5 and the sixth cylinder 6.
Driven by a connecting rod, a piston AEntering the first cylinder 1 to compress the refrigerant in the cylinder body, wherein the piston B is outside the second cylinder 2, the piston C is outside the sixth cylinder 6, the working volume in the first cylinder 1 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p1First exhaust valve 104) is automatically opened to start exhaust at a pressure p1Into the first intercooler 7;
refrigerant vapor from the first intercooler 7 enters the second cylinder 2 through the second air inlet valve 203, the piston B enters the second cylinder 2 under the drive of the connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the first cylinder 1, the piston C is outside the third cylinder 3, the working volume in the second cylinder 2 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p2At this time, the second exhaust valve 204 is automatically opened to start exhausting at a pressure p2Into the second intercooler 8;
refrigerant vapor from the second intercooler 8 enters the third cylinder 3 through the third air inlet valve 303, the piston C enters the third cylinder 3 under the driving of the connecting rod to compress the refrigerant in the cylinder body, at this time, the piston a is outside the fourth cylinder 4, the piston B is outside the second cylinder 2, the working volume in the third cylinder 3 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p3At this time, the third exhaust valve 304 is automatically opened to start exhausting at a pressure p3Into the third intercooler 9;
the refrigerant vapor from the third intercooler 9 enters the fourth cylinder 4 through the fourth air inlet valve 403, at this time, under the driving of the connecting rod, the piston a enters the fourth cylinder 4 to compress the refrigerant in the cylinder body, at this time, the piston B is outside the fifth cylinder 5, the piston C is outside the third cylinder 3, the working volume in the fourth cylinder 4 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p4At this time, the fourth exhaust valve 40 is automatically opened to start exhaust at a pressure p4Into the fourth intercooler 10;
refrigerant vapor from the fourth intercooler 10 enters the fifth cylinder through the fifth intake valve 5035, the piston B enters the fifth cylinder 5 to compress the refrigerant in the cylinder body under the drive of the connecting rod, the piston A is outside the fourth cylinder 4, the piston C is outside the sixth cylinder 6, the working volume in the fifth cylinder 5 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p5At this time, the fifth exhaust valve 504 is automatically opened to start exhaust at a pressure p5Into the fifth intercooler 11;
the refrigerant vapor from the fifth intercooler 11 enters the sixth cylinder 6 through the sixth inlet valve 603, at this time, under the driving of the connecting rod, the piston C enters the sixth cylinder 6 to compress the refrigerant in the cylinder, at this time, the piston a is outside the first cylinder 1, the piston B is outside the fifth cylinder 5, the working volume in the sixth cylinder 6 is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p6At this time, the sixth exhaust valve 604 is automatically opened to start exhausting at a pressure p6Through the exhaust pipe 002 into the condenser.
During the operation of the compressor, the end E1 of the connecting rod E moves along an elliptical trajectory:
when the piston A starts to carry out primary compression on the refrigerant of the first cylinder 1, the connecting rod E and the piston C are in the same straight line, the previous compression is just finished, E1 is at the end point of the long shaft of the ellipse, and when the primary compression is finished, the connecting rod E moves by 1/6 of the ellipse distance;
after the first-stage compression is finished, the piston B starts to carry out the second-stage compression on the refrigerant of the second cylinder 2, and the end point E1 moves by 1/3 of an elliptical distance;
after the second-stage compression is finished, the piston C starts to perform three-stage compression on the refrigerant of the third cylinder 3, at the moment, the connecting rod E and the piston C are on the same straight line, the connecting rod E1 is at the other long shaft end point of the ellipse, and the end point E1 moves by 1/2 of the ellipse distance;
after the third-stage compression is finished, the piston A starts to perform four-stage compression on the refrigerant of the fourth cylinder 4, and the end point E1 moves by 2/3 of an elliptical distance;
after the four-stage compression is finished, the piston B starts to perform five-stage compression on the refrigerant of the fifth cylinder 5, and the end point E1 moves by 5/6 of an elliptical distance;
after the five-stage compression is completed, the piston C starts six-stage compression of the refrigerant in the sixth cylinder 6, and the end point E1 travels the full elliptical distance ready to start the next compression pass.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above description is only exemplary of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A novel refrigeration compressor is characterized in that:
comprising a first cylinder (1), a first air inlet (101), a first exhaust port (102), a first air inlet valve (103), a first exhaust valve (104), a second cylinder (2), a second air inlet (201), a second exhaust port (202), a second air inlet valve (203), a second exhaust valve (204), a third cylinder (3), a third air inlet (301), a third exhaust port (302), a third air inlet valve (303), a third exhaust valve (304), a fourth cylinder (4), a fourth air inlet (401), a fourth exhaust port (402), a fourth air inlet valve (403), a fourth exhaust valve (404), a fifth cylinder (5), a fifth air inlet (501), a fifth exhaust port (502), a fifth air inlet valve (503), a fifth exhaust valve (504), a sixth cylinder (6), a sixth air inlet (601), a sixth exhaust port (602), a sixth air inlet valve (603), a sixth exhaust valve (604), a piston A, a piston B, a piston C, a connecting rod D, a connecting rod E, a first intercooler (7), a second intercooler (8), a third intercooler (9), a fourth intercooler (10), a fifth intercooler (11), an air suction pipe (001) and an exhaust pipe (002);
the output end of the evaporator (d) is connected with the input end of the air suction pipe (001), the output end of the air suction pipe (001) is connected with the first air inlet (101) of the first cylinder (1), the first exhaust port (102) of the first cylinder (1) is connected with the input end (701) of the first intercooler (7), the output end (702) of the first intercooler (7) is connected with the second air inlet (201) of the second cylinder (2), the second exhaust port (202) of the second cylinder (2) is connected with the input end (801) of the second intercooler (8), the output end (802) of the second intercooler (8) is connected with the third air inlet (301) of the third cylinder (3), the third exhaust port (302) of the third cylinder (3) is connected with the input end (901) of the third intercooler (9), the output end (902) of the third intercooler (9) is connected with the fourth air inlet (401) of the fourth cylinder (4), the fourth exhaust port (402) of the fourth cylinder (4) is connected with the input end (1001) of the fourth intercooler (10), the output end (1002) of the fourth intercooler (10) is connected with the fifth air inlet (501) of the fifth cylinder (5), the fifth exhaust port (502) of the fifth cylinder (5) is connected with the input end (1101) of the fifth intercooler (11), the output end (1102) of the fifth intercooler (11) is connected with the sixth air inlet (601) of the sixth cylinder (6), the sixth exhaust port (602) of the sixth cylinder (6) is connected with the input end of an exhaust pipe (002), the output end of the exhaust pipe (002) is connected with the input end of a condenser (b), the output end of the condenser (b) is connected with the input end of an expansion valve (c), and the output end of the expansion valve (c) is connected with the input end of an evaporator (d), so that a complete loop is formed.
2. A novel refrigeration compressor as claimed in claim 1 wherein operation of said novel refrigeration compressor is accomplished by varying the displacement volume defined by the cylinder, the valve and the piston reciprocating in the cylinder, divided into suction, compression and discharge.
3. A novel refrigeration compressor according to claim 1, wherein the pistons A, B and C are connected through an axial center, the connecting rod D connects the axial center of the piston A with the axial center of the piston B, the connecting rod E connects the axial center of the connecting rod D with the axial center of the piston C, and the piston is made of aluminum alloy or cast iron;
the piston and the connecting rod are connected in a concave-convex part combined mode, the axis of the piston is a concave part, and two ends of the connecting rod are convex parts; or the axis of the piston is a protruded part, the two ends of the connecting rod are recessed parts, and the movement of the piston can be realized through the driving of the connecting rod.
4. A novel refrigeration compressor, according to claim 1, characterized in that the first cylinder (1), the second cylinder (2) and the third cylinder (3) are low pressure cylinders, the fourth cylinder (4), the fifth cylinder (5) and the sixth cylinder (6) are high pressure cylinders, a first intercooler (7) is arranged between the first cylinder (1) and the second cylinder (2), a second intercooler (8) is arranged between the second cylinder (2) and the third cylinder (3), a third intercooler (9) is arranged between the third cylinder (3) and the fourth cylinder (4), a fourth intercooler (10) is arranged between the fourth cylinder (4) and the fifth cylinder (5), and a fifth intercooler (11) is arranged between the fifth cylinder (5) and the sixth cylinder (6).
5. A novel refrigeration compressor, according to claim 1, characterized in that, under the drive of the connecting rod, the piston a enters the first cylinder (1) to compress the refrigerant in the cylinder, while the piston B is outside the second cylinder (2) and the piston C is outside the sixth cylinder (6), the working volume in the first cylinder (1) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p1When the valve is opened, the first exhaust valve (104) is automatically opened to start exhaust at the pressure p1Into the first intercooler (7);
refrigerant vapor from the first intercooler (7) enters the second cylinder (2) through the second air inlet valve (203), the piston B enters the second cylinder (2) under the drive of the connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the first cylinder (1), the piston C is outside the third cylinder (3), the working volume in the second cylinder (2) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p2Then, the second exhaust valve (204) is automatically opened to start exhausting at a pressure p2Into the second intercooler (8);
refrigerant vapor from the second intercooler (8) enters a third cylinder (3) through a third air inlet valve (303), a piston C enters the third cylinder (3) under the drive of a connecting rod to compress refrigerant in a cylinder body, a piston A is outside a fourth cylinder (4), a piston B is outside a second cylinder (2), the working volume in the third cylinder (3) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p3While, the third exhaustThe valve (304) opens automatically to begin venting at a pressure p3Into the third intercooler (9);
refrigerant vapor from the third intercooler (9) enters the fourth cylinder (4) through the fourth air inlet valve (403), the piston A enters the fourth cylinder (4) under the drive of the connecting rod to compress the refrigerant in the cylinder body, the piston B is outside the fifth cylinder (5), the piston C is outside the third cylinder (3), the working volume in the fourth cylinder (4) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p4Then, the fourth exhaust valve (404) is automatically opened to start exhausting at a pressure p4Into a fourth intercooler (10);
refrigerant vapor from the fourth intercooler (10) enters a fifth cylinder (5) through a fifth air inlet valve (503), a piston B enters the fifth cylinder (5) under the driving of a connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the fourth cylinder (4), the piston C is outside the sixth cylinder (6), the working volume in the fifth cylinder (5) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p5At the same time, the fifth exhaust valve (504) is automatically opened to start exhausting at the pressure p5Into a fifth intercooler (11);
refrigerant vapor from the fifth intercooler (11) enters a sixth cylinder (6) through a sixth air inlet valve (603), a piston C enters the sixth cylinder (6) under the drive of a connecting rod to compress the refrigerant in the cylinder body, the piston A is outside the first cylinder (1), the piston B is outside the fifth cylinder (5), the working volume in the sixth cylinder (6) is gradually reduced, the pressure in the cylinder is gradually increased, and when the pressure is increased to p6Then, the sixth exhaust valve (604) is automatically opened to start exhausting at a pressure p6Enters the condenser through the exhaust pipe (002).
6. A new type of refrigeration compressor, as set forth in claim 1, characterized in that, during the operation of the compressor, the end E1 of the connecting rod E moves along an elliptical trajectory:
when the piston A starts to carry out primary compression on the refrigerant of the first cylinder (1), the connecting rod E and the piston C are in the same straight line, the previous compression is just finished, E1 is at the end point of the long shaft of the ellipse, and when the primary compression is finished, the connecting rod E moves by 1/6 of the ellipse distance;
after the first-stage compression is finished, the piston B starts to carry out second-stage compression on the refrigerant of the second cylinder (2), and the connecting rod E moves by 1/3 of an elliptical distance;
after the secondary compression is finished, the piston C starts to perform three-stage compression on the refrigerant of the third cylinder (3), at the moment, the connecting rod E and the piston C are on the same straight line, E1 is at the other end point of the long shaft of the ellipse, and the connecting rod E moves by 1/2 of the ellipse distance;
after the third-stage compression is finished, the piston A starts to carry out four-stage compression on the refrigerant of the fourth cylinder (4), and the connecting rod E moves by 2/3 of an ellipse distance;
after the four-stage compression is finished, the piston B starts to perform five-stage compression on the refrigerant of the fifth cylinder (5), and the connecting rod E moves by 5/6 of an elliptical distance;
after the five-stage compression is finished, the piston C starts to perform six-stage compression on the refrigerant of the sixth cylinder (6), and the connecting rod E moves through the whole elliptical distance to prepare for starting the next compression.
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| CN110529357A (en) * | 2019-06-03 | 2019-12-03 | 南京工业大学 | A kind of New Refrigerating compressor |
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| CN110529357A (en) * | 2019-06-03 | 2019-12-03 | 南京工业大学 | A kind of New Refrigerating compressor |
| CN110529357B (en) * | 2019-06-03 | 2024-02-27 | 南京工业大学 | Novel refrigeration compressor |
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