Exhaust pipe and exhaust cavity assembly for rotor compressor
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to an exhaust pipe and exhaust cavity assembly for a rotor compressor.
Background
The compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The refrigerating cycle is powered by sucking low-temperature and low-pressure refrigerant gas from the air suction pipe, driving the piston to compress the refrigerant gas through the operation of the motor, and discharging high-temperature and high-pressure refrigerant gas to the exhaust pipe. The rotor type compressor is one of compressors, and is divided into two types, one type is a fixed-vane type and the other type is a sliding-vane type. The stator plate type rotary compressor has rotor mounted on eccentric shaft and produces volume change during rotation, and the stator plate separates the cylinders. A sliding vane rotor compressor is very similar to a vane pump. Without sealing ring, it depends on centrifugal force and lubricating oil, and the eccentricity of rotor to cylinder to reach the close fit between vane and cylinder.
Along with the improvement of living standard, people also have higher and higher requirements on the use of the compressor, the noise is high, and the oil injection of the compressor is a serious problem in the prior art of the compressor, wherein the exhaust noise is one of main noise sources of the compressor, and the oil injection problem can cause that a refrigeration system does not refrigerate, and a pipeline is blocked or even completely scrapped.
China (CN111706510A) discloses a novel rotor compressor with flexible connection and direct air suction, which comprises a casing, wherein a pump body is installed inside the casing through a plurality of elastic support members, the pump body comprises a cylinder assembly, a crankshaft is sleeved on the cylinder assembly, and a motor is sleeved above the crankshaft; the pump body also comprises a swinging or sliding rotor arranged in the cylinder component, and the rotor is sleeved with the crankshaft; the rotor is connected with the cylinder assembly through a sliding sheet, and the rotor and the sliding sheet divide an inner cavity of the cylinder assembly into a low-pressure cavity and a high-pressure cavity; the low-pressure cavity is connected with an air suction and silencing cavity through an air inlet channel, and the air suction and silencing cavity is connected with an air suction pipe of the shell through an air suction flexible connecting pipe; the high-pressure cavity is connected to an exhaust silencing cavity through an exhaust channel, and the exhaust silencing cavity is communicated with the inner cavity of the shell; although a silencer is arranged, a specific structural scheme is not disclosed, and an exhaust cavity is not arranged at an exhaust pipe in the shell to reduce noise and prevent oil injection.
China (CN213039419U) discloses an exhaust silencer for a compressor, which comprises a first end cover (1), a second end cover (2), a shell (3), a first partition plate (4), a second partition plate (5), an air inlet pipe (6), an exhaust pipe (7), a first vent pipe (8) and a second vent pipe (9), wherein the first end cover (1) and the second end cover (2) are respectively arranged at two ends of the shell (3), the first partition plate (4) and the second partition plate (5) are arranged in the middle of the shell, the air inlet pipe (6) is arranged in the first end cover (1), the exhaust pipe (7) is arranged in the second end cover (2) and the second partition plate (5), the first vent pipe (8) is arranged in the first partition plate (4) and the second partition plate (5), the second vent pipe (9) is arranged in the second partition plate (5), the running path of refrigerant airflow is lengthened, the flow rate of the refrigerant is reduced, and a plurality of expansion cavities are arranged on the airflow path, the exhaust pulsation and the noise of the compressor are effectively reduced, so that the compressor has wide market prospect; the exhaust silencer is generally applied to a reciprocating compressor, is connected to a sealed exhaust pipeline and mainly used for reducing noise and solving the problem of oil injection of the compressor.
How to provide a technical scheme that can reduce compressor noise, can reduce the compressor oil spout again, is the problem that needs to solve.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides an exhaust pipe and exhaust cavity combination for a rotor compressor, which can reduce the exhaust noise of the operation of the compressor and reduce the oil injection of the compressor.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an exhaust pipe and exhaust chamber assembly for rotor compressor, the exhaust chamber includes fixed connection's first end cover and second end cover, first end cover with be fixed with the baffle between the second end cover, the baffle with the space that first end cover formed constitutes first cavity, the baffle with the space that the second end cover formed constitutes the second cavity the baffle with run through between the second end cover be connected with many intake pipes, many the intake pipe intercommunication first cavity with the exhaust chamber is outside, still open a plurality of air vents on the baffle, the inlet end of blast pipe runs through first end cover with the baffle, the inlet end of blast pipe is located in the second cavity, what the blast pipe ran through is connected with the casing of compressor.
In the above scheme, the exhaust cavity includes a first end cover and a second end cover which are fixedly connected, a partition board is fixed between the first end cover and the second end cover, a space formed by the partition board and the first end cover forms a first cavity, a space formed by the partition board and the second end cover forms a second cavity, a plurality of air inlet pipes are connected between the partition board and the second end cover in a penetrating manner, the plurality of air inlet pipes communicate with the first cavity and the outside of the exhaust cavity, the partition board is further provided with a plurality of vent holes, refrigerant gas is expanded and silenced twice in the process from the inside of the compressor to the exhaust pipe by arranging the first cavity, the second cavity, the air inlet pipes and the vent holes, the refrigerant gas operation path is prolonged, the refrigerant gas flow rate is reduced, the exhaust pulsation and noise of the compressor are reduced, and the air inlet end of the exhaust pipe penetrates through the first end cover and the partition board, the air inlet end of the exhaust pipe is positioned in the second cavity, the exhaust pipe penetrates through the second cavity and is connected with the shell of the compressor, finally, the refrigerant gas flows into the exhaust pipe from the second cavity and is discharged out of the compressor, the exhaust pipe is in through connection with the exhaust cavity at the air inlet end of the exhaust pipe, because the exhaust pipe is directly related to the size of exhaust noise and the problem of oil injection of the compressor, the exhaust cavity is arranged at the exhaust pipe to reduce the exhaust noise of the compressor and reduce the oil injection of the exhaust pipe of the compressor,
the high-pressure gas in the compressor flows through the path that the cylinder discharges the high-pressure gas which is directly discharged into the shell sealed by the compressor, the high-pressure gas in the shell enters the first cavity through the air inlet pipe, the high-pressure gas in the first cavity flows into the second cavity through the vent hole, and the high-pressure gas in the second cavity enters the exhaust pipe and finally is discharged out of the compressor.
The exhaust pipe and exhaust cavity combined body structure for the rotor compressor is characterized in that the length of the air inlet end of the exhaust pipe is prolonged on the basis of the existing rotor compressor, and the exhaust structure is arranged at the air inlet end of the exhaust pipe from nothing. Among the prior art, the compressor blast pipe is mostly with the pump body lug connection, can't handle the oil extraction problem at the blast pipe air inlet, and the blast pipe is in inside open structure, and the blast pipe is direct and casing connection, and it stretches out inside the casing connection casing not to discover similar blast pipe, does not also have similar here to set up the technique of preventing oil extraction or falling the noise structure of making an uproar.
Furthermore, a plurality of oil leakage holes are formed in the bottom surface of the second end cover.
The oil discharged to the exhaust cavity can flow to the interior of the compressor again through the oil leakage hole.
Furthermore, the oil leakage hole corresponds to the vent hole.
With the arrangement, when the oil passes through the vent hole along with the refrigerant gas from the first cavity, the oil can more conveniently flow out of the exhaust cavity.
Furthermore, a limiting structure is arranged at the position of the exhaust pipe, which is 10-60mm away from the air outlet end.
Through setting up limit structure, make things convenient for blast pipe and refrigerating system pipe connection location.
Furthermore, the limiting structure is a conical pipeline or a stepped pipeline with the length of 1-5 mm.
The exhaust pipe is provided with the conical pipeline or the stepped pipeline with the length of 1-5mm, so that the exhaust pipe is simple in structure, low in cost and good in limiting effect.
Further, the air inlet end of the air inlet pipe exceeds the end face of the second end cover by 1-10mm, and the air outlet end of the air inlet pipe exceeds the end face of the partition board by 1-20 mm.
The air inlet end of the air inlet pipe exceeds the end face of the second end cover by 1-10mm to form a circular truncated cone structure, so that oil accumulated on the end face of the second end cover is prevented from flowing out of the exhaust pipe, and the air outlet end of the air inlet pipe exceeds the end face of the partition plate by 1-20mm to form a circular truncated cone structure, so that refrigerant gas can flow better, and the circulation distance of the refrigerant gas is prolonged. The end round platform structure of the pipe can play a role in blocking oil and prolonging the flowing distance of gas.
Furthermore, the exhaust pipe and the air inlet pipe are copper pipes, and the exhaust cavity is of a steel cavity structure.
The copper pipe can prevent to rust, processes easily moreover, and the exhaust chamber is established to the steel construction and has stability, and with low costs.
Further, the first end cover and the second end cover are fixed in a welding or riveting mode. The first end cover and the second end cover are stably connected through welding or riveting.
Furthermore, the exhaust pipe is provided with a convex ring structure at the contact part of the exhaust pipe and the shell of the compressor.
The exhaust pipe is provided with the convex ring structure at the contact part of the exhaust pipe and the shell of the compressor, so that the exhaust pipe is positioned when projection welding is convenient, and the welding effect can be improved.
Furthermore, the baffle is provided with a boss positioned at the periphery of the air inlet end of the exhaust pipe, and one or more layers of filter screens are fixed in the boss.
Through setting up boss and filter screen, better prevention fluid blowout blast pipe, the fluid that blocks can flow back to inside the compressor from the oil leak hole.
Compared with the prior art, the invention has the beneficial effects that:
(1) through setting up the exhaust chamber at blast pipe inlet end, make refrigerant gas carry out twice expansion amortization from the compressor is inside to the blast pipe in-process through first cavity, second cavity, intake pipe, air vent, filter screen, prolong refrigerant moving path simultaneously, reduce refrigerant gas flow velocity, reduce the exhaust pulsation and the noise of compressor.
(2) The exhaust cavity is formed in the air inlet end of the exhaust pipe, so that oil injection of the compressor can be prevented directly, and the filter screen and the oil leakage hole structure can enable oil discharged to the exhaust cavity to flow back to the interior of the compressor.
(3) Simple structure easily manufacturing, it is with low costs.
Drawings
FIG. 1 is a schematic view of an exhaust pipe and exhaust chamber assembly for a rotor compressor according to the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic sectional view taken along line B-B in FIG. 2;
FIG. 4 is a bottom view of an exhaust pipe and exhaust chamber assembly for a rotary compressor according to the present invention;
FIG. 5 is a schematic structural view in example 2 of the present invention;
in the figure: 1. an exhaust pipe; 2. an exhaust chamber; 3. a first end cap; 4. a second end cap; 5. a partition plate; 6. a first cavity; 7. a second cavity; 8. an air inlet pipe; 9. a vent hole; 10. an oil leak hole; 11. a limiting structure; 12. a convex ring structure; 13. a boss; 14. filtering with a screen; 15. a housing.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-4, a discharge tube and discharge chamber combination for a rotary compressor, the exhaust cavity 2 comprises a first end cover 3 and a second end cover 4 which are fixedly connected, a partition plate 5 is fixed between the first end cover 3 and the second end cover 4, the space formed by the partition plate 5 and the first end cover 3 forms a first cavity 6, the space formed by the partition plate 5 and the second end cover 4 forms a second cavity 7, two air inlet pipes 8 are penetratingly connected between the partition plate 5 and the second end cover 4, the air inlet pipes 8 are communicated with the first cavity 6 and the outside of the exhaust cavity 2, the partition board 5 is also provided with two vent holes 9, the air inlet end of the exhaust pipe 1 penetrates through the first end cover 3 and the partition board 5, the air inlet end of the exhaust pipe 1 is positioned in the second cavity 7, and the exhaust pipe 1 penetrates through and is connected with a shell 15 of the compressor.
In the above scheme, the exhaust pipe 1 is welded on a shell 15 of the compressor in a penetrating way, the pipe diameter is 7-10mm, the exhaust cavity 2 is welded at the air inlet end of the exhaust pipe 1, because the exhaust pipe 1 is directly related to the size of exhaust noise and the problem of oil injection of the compressor, the exhaust cavity 2 is arranged at the position to reduce the exhaust noise of the compressor and reduce the oil injection of the exhaust pipe 1 of the compressor, the exhaust cavity 2 comprises a first end cover 3 and a second end cover 4 which are welded together, a partition plate 5 is fixed between the first end cover 3 and the second end cover 4, the space formed by the partition plate 5 and the first end cover 3 forms a first cavity 6, the space formed by the partition plate 5 and the second end cover 4 forms a second cavity 7, a plurality of air inlet pipes 8 are connected between the partition plate 5 and the second end cover 4 in a penetrating way, the pipe diameters are 3-6mm, and the air inlet pipes 8 are communicated with the first cavity 6 and the outside of the exhaust cavity 2, the air inlet end of the exhaust pipe 1 penetrates through the first end cover 3 and the partition plate 5 and is located in the second cavity 7, the air inlet end of the exhaust pipe 1 extends out of the end face of the partition plate 5 by 3-8mm, and finally refrigerant gas flows into the exhaust pipe 1 from the second cavity 7 and is discharged out of the compressor.
Furthermore, two oil leakage holes 10 with the aperture of 0.5-3mm are formed in the bottom surface of the second end cover 4.
The oil discharged to the discharge chamber 2 can be re-flowed to the inside of the compressor through the oil leakage hole 10.
Further, the oil leakage hole 10 corresponds to the vent hole 9.
So arranged, when oil passes through the vent hole 9 with refrigerant gas from the first cavity 6, it flows out of the discharge cavity 2 more conveniently.
Furthermore, the exhaust pipe 1 is provided with a limiting structure 11 at a position 10-60mm away from the air outlet end.
Through setting up limit structure 11, make things convenient for blast pipe 1 and refrigerating system pipe connection location.
Furthermore, the limiting structure 11 is a tapered pipeline or a stepped pipeline with the length of 1-5 mm.
The exhaust pipe 1 is provided with the 1-5mm long conical pipeline or the stepped pipeline, so that the exhaust pipe is simple in structure, low in cost and good in limiting effect.
Further, the air inlet end of the air inlet pipe 8 exceeds the end face of the second end cover 4 by 1-10mm, and the air outlet end of the air inlet pipe 8 exceeds the end face of the partition plate 5 by 1-20 mm.
The air inlet end of the air inlet pipe 8 exceeds the end face of the second end cover 4 by 1-10mm to form a circular truncated cone structure, oil accumulated on the end face of the second end cover 4 is prevented from flowing out of the exhaust pipe 1, the air outlet end of the air inlet pipe 8 exceeds the end face of the partition plate 5 by 1-20mm to form a circular truncated cone structure, refrigerant gas can flow better, and the circulation distance of the refrigerant gas is prolonged. The end round platform structure of the pipe can play a role in blocking oil and prolonging the flowing distance of gas.
Further, the exhaust pipe 1 and the intake pipe 8 are copper pipes, and the exhaust cavity 2 is of a steel cavity structure.
The copper pipe can prevent to rust, processes easily moreover, and exhaust chamber 2 establishes to the steel construction has stability, and with low costs.
Further, the first end cap 3 and the second end cap 4 are fixed by welding or riveting. The first end cap 3 is stably connected to the second end cap 4 by welding or riveting.
Furthermore, the exhaust pipe 1 is provided with a convex ring structure 12 at a contact part with a shell 15 of the compressor.
The exhaust pipe 1 is provided with the convex ring structure 12 at the contact part of the exhaust pipe 1 and the shell 15 of the compressor, so that the exhaust pipe 1 is positioned when projection welding is convenient, the contact area can be increased, heat is concentrated when welding, and the welding effect is improved.
Example 2
As shown in fig. 5, the exhaust pipe and exhaust cavity combination for the rotary compressor of the present embodiment is further optimized based on embodiment 1:
furthermore, a boss 13 positioned at the periphery of the air inlet end of the exhaust pipe 1 is arranged on the partition plate 5, and two layers of filter screens 14 are fixed in the boss 13. The fixing mode can be welding, gluing or clamping.
Through setting up boss 13 and filter screen 14, better prevention fluid blowout blast pipe 1, the fluid that blocks can flow back to the compressor inside from oil leak hole 10.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.