CN116412144A

CN116412144A - Rotor type compressor

Info

Publication number: CN116412144A
Application number: CN202111648258.9A
Authority: CN
Inventors: 李伟健
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2023-07-11

Abstract

The invention relates to the technical field of compressor structures, and discloses a rotor type compressor, which comprises: a housing; the compression assembly comprises a crankshaft, a piston and a rotary power piece, the rotary power piece is fixed in the shell, the first end of the crankshaft is connected with the output end of the rotary power piece, and the second end of the crankshaft is connected with the piston; the compression cylinder body is fixed in the shell, the second end of the crankshaft penetrates through the compression cylinder body, the piston is positioned in a compression cavity of the compression cylinder body, and an exhaust hole is formed in the cylinder wall of the compression cylinder body; the muffler is fixed on the outer wall of compression cylinder body, and the muffler sets up to the cavity structure, and the muffler covers on the exhaust hole and the inner chamber intercommunication of muffler, is equipped with the air duct on the wall body of muffler, and the outer wall of muffler is connected with the air duct, and the air duct personally submits the contained angle setting with the level. The rotor type compressor can effectively inhibit middle and low frequency noise and improve the overall silencing effect by arranging the silencer and the air duct.

Description

Rotor type compressor

Technical Field

The invention relates to the technical field of compressor structures, in particular to a rotor type compressor.

Background

The refrigerating equipment is widely applied to the fields of air conditioners, refrigerators and the like, and along with the continuous improvement of the living standard of people, the requirements of people on the refrigerating equipment are higher and higher. The compressor is used as a key component of refrigeration equipment, and the structural optimization of the compressor is particularly important.

In order to reduce noise, the existing rotor type compressors on the market are provided with a silencer in a shell, and the silencer generally adopts a serrated outlet and inner flanging structure so as to eliminate high-frequency noise, but the phenomenon of high noise still exists in middle and low frequency bands, and the overall silencing effect is not obvious.

There is a need for a rotor compressor that overcomes the above-mentioned problems.

Disclosure of Invention

Based on the above, the present invention aims to provide a rotor compressor, which is provided with a muffler and an air duct, so that low-frequency noise is effectively suppressed, and the overall noise reduction effect is improved.

In order to achieve the above purpose, the invention adopts the following technical scheme:

provided is a rotor type compressor including:

a housing;

the compression assembly comprises a crankshaft, a piston and a rotary power piece, wherein the rotary power piece is fixed in the shell, a first end of the crankshaft is connected with an output end of the rotary power piece, and a second end of the crankshaft is connected with the piston;

the compression cylinder body is fixed in the shell, the second end of the crankshaft penetrates through the compression cylinder body, the piston is positioned in a compression cavity of the compression cylinder body, and an exhaust hole is formed in the cylinder wall of the compression cylinder body;

the muffler is fixed on the outer wall of the compression cylinder body, the muffler is arranged to be of a cavity structure, the muffler covers the exhaust holes and is communicated with the inner cavity of the muffler, the wall body of the muffler is provided with an air guide hole, the outer wall of the muffler is connected with an air guide pipe, the air guide pipe is communicated with the air guide hole, and the air guide pipe and the horizontal surface are arranged at an included angle.

As an optional technical solution of the rotor compressor, the included angle θ between the air duct and the horizontal plane is greater than 0 ° and less than 90 °.

As an alternative solution of the rotor compressor, the ratio of the length L of the air duct to the inner diameter D ranges from 0.625 to 3.

As an alternative solution of the rotor compressor, the ratio of the inner diameter D of the air duct to the wall thickness t ranges from 2.5 to 16.

As an optional technical scheme of the rotor type compressor, the compression cylinder body is located below the rotary power piece and comprises an upper cylinder cover, and the second end of the crankshaft penetrates through the upper cylinder cover and is arranged on the compression cylinder body.

As an optional technical scheme of rotor type compressor, the muffler is fixed in the upper surface of last cylinder cap, be equipped with the bellying on the last cylinder cap, be equipped with first hole of stepping down on the bellying, qu Zhoujing first hole of stepping down stretches into in the compression chamber of compression cylinder body, be equipped with the hole of stepping down of second on the upper wall of muffler, the bellying is sealed to be inserted and locates the hole of stepping down of second.

As an optional technical scheme of the rotor type compressor, the compression cylinder body further comprises a cylinder and a lower cylinder cover, the upper cylinder cover, the cylinder and the lower cylinder cover are hermetically connected from top to bottom, and the upper cylinder cover is fixedly connected with the inner wall of the shell.

As an alternative technical scheme of the rotor type compressor, the air duct is connected with the silencer through welding.

As an optional technical scheme of the rotor compressor, the rotor compressor further comprises a liquid storage tank, wherein the liquid storage tank is used for storing a refrigerant, the liquid storage tank is connected with the outer wall of the shell, and the liquid storage tank is communicated with the compression cavity of the compression cylinder body.

As an alternative technical scheme of the rotor type compressor, the rotary power member adopts a rotary motor, and an output end of the rotary motor is connected with the crankshaft.

The beneficial effects of the invention are as follows:

the rotor compressor provided by the invention is provided with the silencer, the silencer is covered on the exhaust hole of the compression cylinder body, and the gas exhausted from the compression cylinder body is exhausted into the shell through the silencer. Further, the wall body of the silencer is provided with an air guide hole, the air guide hole is communicated with the air guide pipe, and gas in the silencer is discharged through the air guide pipe, on one hand, the silencer is matched with the air guide pipe, and on the basis of preliminary silencing of the silencer, the air guide pipe effectively extends the flow length of the air flow, and noise caused by direct ejection of the air flow is reduced; on the other hand, the air duct limits the direction of the air exhaust, and the air duct and the horizontal surface form an included angle to prevent the exhaust air from directly colliding with the inner wall of the shell to generate secondary noise, thereby effectively inhibiting middle-low frequency noise and improving the overall silencing effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic view of a structure of a rotor type compressor according to the present invention;

FIG. 2 is an enlarged schematic view of area A of FIG. 1;

FIG. 3 is a schematic view of the structure of the muffler and the air duct provided by the present invention;

FIG. 4 is a front view of a muffler and airway provided by the present invention;

fig. 5 is a graph of the amount of silencing provided by the present invention for a silencer and an airway.

In the figure:

1. a housing; 2. a crankshaft; 3. a piston; 4. a rotary power member; 5. a compression cylinder; 51. an upper cylinder cover; 52. a cylinder; 53. a lower cylinder cover; 6. a muffler; 61. an air guide hole; 62. a second relief hole; 63. a mounting hole; 7. an air duct; 8. pump body bolts; 9. a liquid storage tank; 10. a lower shell cover; 11. a top cover; 12. and a supporting seat.

Detailed Description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.

As shown in fig. 1 to 4, the present embodiment provides a rotor type compressor mainly used in an air conditioner, a refrigerator, and the like, which includes a housing 1, a compression assembly, a compression cylinder 5, and a muffler 6. The compression assembly comprises a crankshaft 2, a piston 3 and a rotary power piece 4, wherein the rotary power piece 4 is fixed in the shell 1, a first end of the crankshaft 2 is connected with an output end of the rotary power piece 4, and a second end of the crankshaft 2 is connected with the piston 3; the compression cylinder body 5 is fixed in the shell 1, the second end of the crankshaft 2 penetrates through the compression cylinder body 5, the piston 3 is positioned in a compression cavity of the compression cylinder body 5, the crankshaft 2 drives the piston 3 to rotate so as to compress refrigerant in the compression cavity, and an exhaust hole is formed in a cylinder wall of the compression cylinder body 5; the muffler 6 is fixed in on the outer wall of compression cylinder body 5, and muffler 6 sets up to the cavity structure, and muffler 6 covers on the exhaust hole and the inner chamber intercommunication of muffler 6, is equipped with air duct 61 on the wall of muffler 6, and the outer wall of muffler 6 is connected with air duct 7, and air duct 7 and air duct 61 intercommunication, and the contained angle setting is personally submitted with the level to the air duct 7.

Specifically, the rotor compressor provided in this embodiment is provided with a muffler 6, the muffler 6 is covered on the exhaust hole of the compression cylinder 5, and the gas discharged from the compression cylinder 5 is discharged into the casing 1 through the muffler 6. Further, the wall body of the silencer 6 is provided with an air guide hole 61, the air guide hole 61 is communicated with the air guide pipe 7, and air in the silencer 6 is discharged through the air guide pipe 7, on one hand, the silencer 6 is matched with the air guide pipe 7, and on the basis of preliminary silencing of the silencer 6, the air guide pipe 7 effectively extends the flowing length of air flow, and noise caused by direct ejection of the air flow is reduced; on the other hand, the air duct 7 limits the direction of the air exhaust, and the air duct 7 forms an included angle with the horizontal plane, so that the exhaust air is prevented from directly colliding with the inner wall of the shell 1 to generate secondary noise, the middle-low frequency noise is effectively restrained, and the overall silencing effect is improved.

Preferably, the included angle θ between the air duct 7 and the horizontal plane is greater than 0 ° and less than 90 °. More preferably, the angle θ between the gas duct 7 and the horizontal plane is between 30 ° and 60 °, for example θ is 30 °, 35 °, 40 °, 45 °, 50 °, 55 ° or 60 °.

Preferably, the ratio of the length L of the airway tube 7 to the inner diameter D is in the range of 0.625 to 3.

Preferably, the ratio of the inner diameter D of the airway tube 7 to the wall thickness t is in the range 2.5 to 16.

Preferably, the length L of the airway 7 is 12mm.

Preferably, the inner diameter D of the airway 7 is 6.5mm.

Alternatively, the compression cylinder 5 is located below the rotary power member 4, the compression cylinder 5 includes an upper cylinder cover 51, and the second end of the crankshaft 2 is disposed through the upper cylinder cover 51 to penetrate the compression cylinder 5. The inclined air duct 7 can prevent the exhaust gas from directly colliding with the rotary power member 4 to generate secondary noise.

Further, the muffler 6 is fixed on the upper surface of the upper cylinder cover 51, a protruding portion is arranged on the upper cylinder cover 51, a first relief hole is arranged on the protruding portion, the crankshaft 2 extends into the compression cavity of the compression cylinder body 5 through the first relief hole, a second relief hole 62 is arranged on the upper wall of the muffler 6, and the protruding portion is inserted in the second relief hole 62 in a sealing mode.

Optionally, the compression cylinder 5 further includes a cylinder 52 and a lower cylinder cover 53, the upper cylinder cover 51, the cylinder 52 and the lower cylinder cover 53 are hermetically connected from top to bottom, and the upper cylinder cover 51 is fixedly connected with the inner wall of the casing 1. Specifically, the upper cylinder head 51, the cylinder 52, and the lower cylinder head 53 are fixedly connected by the pump body bolts 8, and the upper cylinder head 51 is connected to the inner wall of the housing 1 by arc welding.

Further, the bottom of the muffler 6 is provided with a middle open structure, the bottom of the muffler 6 is provided with a folded edge, the folded edge is provided with a mounting hole 63, the pump body bolt 8 penetrates through the mounting hole 63 and presses the folded edge against the upper surface of the upper cylinder cover 51, so that the muffler 6 is fixed on the upper cylinder cover 51.

Preferably, the air duct 7 is connected to the muffler 6 by welding. In other embodiments, the air duct 7 and the muffler 6 may be integrally formed.

Optionally, the rotor compressor further includes a liquid storage tank 9, the liquid storage tank 9 is connected with the outer wall of the casing 1, the liquid storage tank 9 is communicated with the compression cavity of the compression cylinder 5, and the liquid storage tank 9 is used for storing part of refrigerant so as to reduce liquid refrigerant to be directly discharged into the compression cavity of the compression cylinder 5, thereby reducing liquid impact.

Preferably, the liquid storage tank 9 is welded to the housing 1, specifically, the liquid storage tank 9 is welded to the housing 1 by phosphor copper welding.

Preferably, the rotary power member 4 adopts a rotary motor, an output end of the rotary motor is connected with the crankshaft 2, specifically, a rotor part of the rotary motor is connected with the crankshaft 2 to drive the crankshaft 2 to rotate around a vertical axis, and a stator part of the rotary motor is connected with the housing 1 through shrink fit.

Optionally, the rotor compressor further includes an upper casing cover 11 and a lower casing cover 10, and the upper casing cover 11 are respectively disposed at an upper end and a lower end of the casing 1.

Preferably, the upper case cover 11 is welded to the case 1 to seal the upper end of the case 1 to prevent the refrigerant from leaking out.

Preferably, the lower case cover 10 is welded to the case 1 to seal the lower end of the case 1 to prevent the refrigerant from leaking out.

Preferably, the piston 3 is sleeved on the crankshaft 2, and the crankshaft 2 is in clearance fit with the piston 3.

Preferably, the bottom of the lower casing cover 10 is also provided with a supporting seat 12, the supporting seat 12 is fixedly connected with the lower casing cover through electric welding, and the supporting seat 12 is used for supporting the whole rotor type compressor, so that the stability is improved.

As shown in fig. 5, when the inner diameter of the air duct 61 or the inner diameter D of the air duct 7 is 6.5mm, the noise reduction amount is better than the noise reduction amount without the air duct 7 for noise with the frequency of 1260Hz or less when the muffler 6 is matched with the air duct 7, and the noise reduction effect is remarkably improved after the air duct 7 is used.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. A rotor compressor, comprising:

a housing (1);

the compression assembly comprises a crankshaft (2), a piston (3) and a rotary power piece (4), wherein the rotary power piece (4) is fixed in the shell (1), a first end of the crankshaft (2) is connected with an output end of the rotary power piece (4), and a second end of the crankshaft (2) is connected with the piston (3);

the compression cylinder body (5) is fixed in the shell (1), the second end of the crankshaft (2) penetrates through the compression cylinder body (5), the piston (3) is positioned in a compression cavity of the compression cylinder body (5), and an exhaust hole is formed in a cylinder wall of the compression cylinder body (5);

muffler (6), be fixed in on the outer wall of compression cylinder body (5), muffler (6) set up to the cavity structure, muffler (6) cover in on the exhaust hole just the exhaust hole with the inner chamber intercommunication of muffler (6), be equipped with air vent (61) on the wall of muffler (6), the outer wall of muffler (6) is connected with air duct (7), air duct (7) with air vent (61) intercommunication, air duct (7) are personally submitted the contained angle with the level and are set up.

2. Rotor compressor according to claim 1, characterized in that the angle θ between the gas duct (7) and the horizontal plane is greater than 0 ° and less than 90 °.

3. Rotor compressor according to claim 1, characterized in that the ratio of the length L of the air duct (7) to the inner diameter D ranges from 0.625 to 3.

4. Rotor compressor according to claim 1, characterized in that the ratio of the inner diameter D of the gas duct (7) to the wall thickness t ranges from 2.5 to 16.

5. Rotor compressor according to claim 1, characterized in that the compression cylinder (5) is located below the rotary power member (4), the compression cylinder (5) comprising an upper cylinder head (51), the second end of the crankshaft (2) being threaded through the compression cylinder (5) via the upper cylinder head (51).

6. The rotor compressor as recited in claim 5, wherein the muffler (6) is fixed on an upper surface of the upper cylinder cover (51), a boss is provided on the upper cylinder cover (51), a first relief hole is provided on the boss, the crankshaft (2) extends into the compression cavity of the compression cylinder (5) through the first relief hole, a second relief hole (62) is provided on an upper wall of the muffler (6), and the boss is inserted in the second relief hole (62) in a sealing manner.

7. The rotor compressor as recited in claim 5, wherein the compression cylinder (5) further comprises a cylinder (52) and a lower cylinder cover (53), the upper cylinder cover (51), the cylinder (52) and the lower cylinder cover (53) are hermetically connected from top to bottom, and the upper cylinder cover (51) is fixedly connected with the inner wall of the housing (1).

8. Rotor compressor according to any one of claims 1 to 7, characterized in that the air duct (7) is connected to the muffler (6) by welding.

9. The rotor compressor according to any one of claims 1 to 7, further comprising a liquid reservoir (9), the liquid reservoir (9) being for storing a refrigerant, the liquid reservoir (9) being connected to an outer wall of the housing (1), the liquid reservoir (9) being in communication with a compression chamber of the compression cylinder (5).

10. A rotor compressor according to any one of claims 1 to 7, characterized in that the rotary power member (4) is a rotary electric machine, the output of which is connected to the crankshaft (2).