CN1510277A

CN1510277A - Closed rotary compressor discharge valve assembling body installing structure

Info

Publication number: CN1510277A
Application number: CNA021581401A
Authority: CN
Inventors: 李; 李勲
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-12-25
Filing date: 2002-12-25
Publication date: 2004-07-07

Abstract

An installation structure of the exhaust valve assembly for sealed rotary comprssor has a cylinder for comprssing cold medium and the exhaust hole on the cylinder for discharging the compressed cold medium. The screw part is reversely arranged in the slot in cylinder and close to said exhaust hole and clamped to the lower end face of upper bearing with through hole for fastening the pilot valve and position limiter together. Its advantages are small installation force, less deformation, no leakage and high compression efficiency.

Description

Closed rotary compressor exhaust valve assembly mounting structure

Technical field

The present invention is the invention of relevant closed rotary compressor aspect, particularly provides a kind of in order to discharge the relevant closed rotary compressor exhaust valve assembly mounting structure of the refrigerant that compresses in cylinder.

Background technique

As shown in Figure 1 and Figure 2, the compression mechanical portion 130 of refrigerant suction/compression/discharge is carried out in seal container 110 inside to compressor and the electromechanical part 120 of drive compression machinery portion 130 constitutes by being formed on.

Electromechanical part 120 is made of following array structure: introduce power supply, produce the stator 121 of magnetic force; According to the magnetic force of its stator 121, the rotor 122 that is rotated; Be pressed into the running shaft 123 in its rotor 122 internal diameters.

Compression mechanical portion 130 comprises following structure: the refrigerant that sucks is compressed the cylinder 31 of discharging afterwards and being provided with; Be assembled in the top and the bottom of cylinder 131, and in cylinder, be formed with pressing chamber p, be connected with running shaft 23 respectively, and the upper bearing portion 132 of supporting rotating shaft and lower bearing 133, also be provided with annular piston 134.The eccentric eccentric part 124 that forms in the axle center of running shaft 123 and annular piston center, its eccentric part 124 is inserted in the pressing chamber P inside of cylinder, and annular piston revolves round the sun in the outside of eccentric part 124.

Baffle plate (not shown) inserts a side that is fixed on pressing chamber p, and can carry out the straight line back and forth movement along radial direction, one side of baffle plate is that line contacts with the outer axial face of annular piston 134, and according to the pressing chamber p inner peripheral surface of cylinder 131 and the outer circumferential face of annular piston 134 inner space is separated into suction field and compression field.

Cylinder 131 comprises suction port 140 and exhaust port 141, and suction port is used for sucking refrigerant, and suction port connects for the suction field of same baffle plate (for diagram) side, thereby is to connect cylinder wall 131 to form.Exhaust port is used for discharging at the gas of compression field compression, and exhaust port is formed at the opposite side of baffle plate, is to cut the cylinder wall upper side edge along what form, is formed with flight 142 in top one side that is formed with above-mentioned exhaust port 141.

Upper bearing portion 132 comprises relief opening 142 and end difference portion.Exhaust port is to be communicated with on the relief opening 142 on the exhaust port 141 of cylinder 131.End difference portion is that the end face with bearing portion mounting hole 156 of screw pushes and forms.

Exhaust valve assembly 150 comprises following structure: the guiding valve 152 that opens and closes upper bearing 132 relief openings 142; Limit the opening state of guiding valve 152, play the snubber 151 of elastic support effect.

The structural feature of guiding valve 152 and snubber 151 is as follows: the upside in upper bearing portion 132, by screw assembly 153, valve mounting hole 155 and snubber 151 mounting holes are being communicated with the mounting hole 154 of bearing portion respectively.

In the drawing, the symbol 143 that does not describe is bafflers, the 144th, and the refrigerant suction pipe, the 145th, the refrigerant discharge tube, the 146th, compressor support platform, BW are equilibrium blocks.

Closed rotary compressor 100 runnings of prior art are as follows: apply power supply for electromechanical part 120, between stator 121 and rotor 122, produce induced current, rotor is rotated, and according to the rotation of rotor 122, the running shaft 123 that is pressed into rotor 122 is rotated.

Rotation according to running shaft 123, at the annular piston 134 that is combined with eccentric part 124 on the running shaft 123 under same baffle plate (not shown) state of contact, pressing chamber at cylinder 131 carries out the off-centre rotation, so according to the Volume Changes of pressing chamber P, the cold media air of high-temperature low-pressure is by suction port 140, be drawn into above-mentioned pressing chamber P, be compressed into high-temperature high-pressure state.

Be compressed into the cold media air of high-temperature high-pressure state, reach certain pressure when above, blocking the guiding valve 152 of the relief opening of upper bearing portion 132 will open automatically, its cold media air is discharged by exhaust port 141 and relief opening 142, the space of row between bearing 132 and baffler 114, on baffler 114 tops,, discharge to discharge tube 115 then by the inside of seal container 101 via baffler relief opening (not shown).

Screw assembly 153 connects the valve mounting hole 155 of guiding valve 152 and limits the snubber mounting hole 154 of supporting valve mounting hole and snubber 151, and the screw assembly is installed in the bearing mounting hole 156 that possesses the upper bearing 132 that helical is arranged.For the screw assembly is immersed in the flight of cylinder 131, install to the bottom from top, the influence that the exhaust that continues that discharged by the refrigerant of High Temperature High Pressure to cause is born a heavy burden, bearing mounting hole 156 forming parts of the end difference portion of upper bearing 132 deform, cause when snubber 151 and guiding valve 152 are installed end face to deform again, cause problems such as the leakage of cylinder 131 and decreased performance at bearing mounting hole 156 moulding sections of upper bearing 132.

Summary of the invention

In order to address the above problem, the present invention proposes a kind of preventing owing to the required installing force of the exhaust valve assembly of upper bearing is installed and exhaust that the High Temperature High Pressure refrigerant that continues the causes distortion of the cut different unit that causes of bearing a heavy burden, and solves the low closed rotary compressor exhaust valve assembly mounting structure of performance that the leakage of cylinder causes.

In order to achieve the above object, technological scheme of the present invention provides a kind of closed rotary compressor drain tap assembly mounting structure, its structure mainly includes the exhaust port that the refrigerant of the cylinder of compression refrigerant and top compression thereof is discharged, in the sidepiece cylinder of described cylinder vent, be provided with in the groove of the head upside-down mounting of screw assembly, and being stuck in fixing upper bearing lower end surface with through hole, the screw section by the screw assembly tightens together guiding valve with valve mounting hole and the snubber with tapped hole.

Effect of the present invention is to have reduced according to the present invention to prevent the gas leakage of cylinder and improve compression efficiency owing to the bear a heavy burden deformation extent of the upper bearing portion cut different unit that causes of the exhaust of the cold media air of the transition installing force of closed rotary compressor drain tap assembly body and high-temperature high-pressure state.

Description of drawings

Fig. 1 is existing closed rotary compressor sectional arrangement drawing;

Fig. 2 is the local amplification profile of existing closed rotary compressor guiding valve mounting structure;

Fig. 3 is a closed rotary compressor sectional arrangement drawing of the present invention;

Fig. 4 is a closed rotary compressor upper bearing planimetric map of the present invention;

Fig. 5 is the A-A longitudinal section enlarged view of Fig. 4;

Fig. 6 is that the B of Fig. 5 is to enlarged view.

Among the figure:

131: cylinder 32: upper bearing

133: lower bearing 50: exhaust valve assembly

51: snubber 52: the guiding valve

53: screw assembly 53a: head

53b: screw section 54: snubber mounting hole

55: valve mounting hole 56: through hole

57: groove

Embodiment

Reaching embodiment with reference to the accompanying drawings describes closed rotary compressor exhaust valve assembly mounting structure of the present invention and its operating principle.

To closed rotary compressor drain tap assembly mounting structure of the present invention, its structure mainly includes the exhaust port that the refrigerant of the cylinder of compression refrigerant and top compression thereof is discharged, it is characterized in that in the sidepiece cylinder of described cylinder vent, being provided with in the groove 57 of the head 53a upside-down mounting of screw assembly 53, and being stuck in fixing 32 lower end surfaces of the upper bearing with through hole, the screw section 53b by screw assembly 53 tightens together guiding valve 52 with valve mounting hole 55 and the snubber 51 with tapped hole 54.

To shown in Figure 6, closed rotary compressor 100 is included in seal container 110 inside and carries out the suction of refrigerant as Fig. 1, and compression mechanical portion 130 that compression is discharged and the electromechanical part of drive compression machinery portion 130 120 constitute.

The rotor 122 that electromechanical part 120 is rotated by the stator 121 that adds power supply generation magnetic force with according to the magnetic force of stator 121 and be pressed into running shaft 123 in rotor 122 internal diameters etc. and constitute.

Compression mechanical portion 130 comprises following structure: the refrigerant that sucks is compressed the cylinder 131 of discharging afterwards and being provided with; Be assembled in the top and the bottom of cylinder 131, and in cylinder, be formed with pressing chamber p, connect with running shaft 123 separately together, and the upper bearing portion 132 of supporting rotating shaft and lower bearing 133.Also be provided with annular piston 134.The eccentric eccentric part 124 that forms in the axle center of running shaft 123 and annular piston center, its eccentric part 24 is inserted in the pressing chamber P inside of cylinder, and annular piston revolves round the sun in the outside of eccentric part 24.

Cylinder 131 comprises suction port 140 and exhaust port 141.Suction port is used for sucking refrigerant, and suction port connects for the suction field of same baffle plate (for diagram) side, thereby is to connect cylinder wall 131 to form.Exhaust port is used for discharging the gas in the compression field compression, and exhaust port is formed at the opposite side of baffle plate, is to cut the cylinder wall upper side edge along forming.Be formed with the groove 57 of the head 53a that has screw assembly 53 in top one side that is formed with above-mentioned exhaust port 141.

Upper bearing portion 32 comprises relief opening 142 and cut different unit 55.Relief opening 142 is that the exhaust port 141 with cylinder 131 is being communicated with.For the end face that makes through hole 56 dwindles, the head 53a that is fixed with screw assembly 53 in groove 57 upside-down mountings of cylinder 131, screw section 53b connects to upside drain tap assembly body 50 is installed.

Row's device valve assembly body 50 is by the guiding valve 52 of the relief opening 42 that opens and closes upper bearing portion 32 and the snubber 51 of opening state that limits guiding valve 52 and elastic support guiding valve.

Snubber 51 comprises the snubber mounting hole 54 that makes the one side be installed on the screw assembly 53 of bearing portion 32 and be formed with helical for elastic support guiding valve 52.

The symbol 143 that does not describe in the drawing is bafflers, the 144th, and the refrigerant suction pipe, the 145th, the refrigerant outlet pipe, the 146th, compressor support platform, bw are equilibrium blocks.

Operating principle according to closed rotary compressor of the present invention is as follows: introduce power supply for electromechanical part 120, at stator 121 with revolve and between 122, produce induced current, rotor is rotated, and along with the rotation of rotor 122, the running shaft 123 that is pressed in the rotor 122 begins rotation.

Rotation according to running shaft 123, on running shaft 123, be combined with the annular piston 134 of eccentric part 124, be under same baffle plate (not shown) state of contact, in the pressing chamber p of cylinder 131, to carry out the off-centre rotation, according to the Volume Changes of pressing chamber p, the cold media air of high-temperature low-pressure is inhaled in the pressing chamber p by suction port 40 then, is compressed into the cold media air of high-temperature high-pressure state.

Be compressed the cold media air of the high-temperature high-pressure state that forms, when its pressure acquires a certain degree above the time, will open the guiding valve 152 of the exhaust port 142 of blocking upper bearing portion 132, then by exhaust port 141 and relief opening 142, be discharged to the space between upper bearing portion 132 and the baffler, and then discharge to outlet pipe 145 by the inside of seal container 110.

In the sidepiece cylinder of described cylinder vent, be provided with in the groove 57 of the head 53a upside-down mounting of screw assembly 53, and being stuck in fixing 32 lower end surfaces of the upper bearing with through hole, the screw section 53b by screw assembly 53 tightens together guiding valve 52 with valve mounting hole 55 and the snubber 51 with tapped hole 54.The bottom of upper bearing 32 forms cut different unit 34 toward upside.Reduce to have held owing to the bear a heavy burden deformation extent of the upper bearing portion end difference portion that causes of the exhaust of the cold media air of the transition installing force of closed rotary compressor drain tap assembly body and high-temperature high-pressure state.

Claims

1, a kind of closed rotary compressor drain tap assembly mounting structure, its structure mainly includes the exhaust port that the refrigerant of the cylinder of compression refrigerant and top compression thereof is discharged, it is characterized in that in the sidepiece cylinder of described cylinder vent, being provided with in the groove (57) of head (53a) upside-down mounting of a screw assembly (53), and being stuck in the fixing upper bearing with through hole (32) lower end surface, the screw section (53b) by screw assembly (53) tightens together guiding valve (52) with valve mounting hole (55) and the snubber (51) with tapped hole (54).