CN101532493A

CN101532493A - Rotary compressor

Info

Publication number: CN101532493A
Application number: CN200910001529A
Authority: CN
Inventors: 两角尚哉; 上田健史
Original assignee: Fujitsu General Ltd
Current assignee: Fujitsu General Ltd
Priority date: 2008-01-11
Filing date: 2009-01-09
Publication date: 2009-09-16
Also published as: EP2078862A2; US20090180912A1; JP2009167828A

Abstract

The invention provides a rotary compressor, which can reduce over compression loss caused by flow resistance of coolant in discharge hole of compression parts. The rotary compressor includes a compressing section including a cylindrical cylinder, two end plates closing both ends of the cylinder, respectively, and a piston held by an eccentric section of a rotary shaft driven to rotate by a motor. A working chamber is formed between the piston and the cylinder inner wall. The rotary compressor also includes a vane protruding from within a vane groove of the cylinder into the working chamber; an airtight compressor housing accommodating therein the compressing section; a suction hole provided in the cylinder and communicating the suction chamber with a low-pressure side of a refrigerating cycle; and a discharge hole provided in one of the end plates and communicating the compression chamber with a high-pressure side of the refrigerating cycle. An auxiliary discharge hole different from the discharge hole is provided in the one end plate.

Description

Rotary compressor

Technical field

The invention relates to the rotary compressor of a kind of use in the refrigeration cycle of air conditioner.

Background technique

In the past, be pressed at the electric element that will rotate compressing member and drive this compressing member and remain in the tubular seal container and make in the container in the rotary compressor of high pressure, there is following this structure: in the upper shed portion of the tubular pressing chamber of sealing cylinder and form the upper bearing (end plate) of bearing of the running shaft of electric element, and the lower bearing (end plate) that seals the under shed portion of described pressing chamber and form another bearing part of running shaft is provided with the ejection valve on the two, and these ejection valves open or close (for example with reference to patent documentation 1) according to the size of ejection port (spraying hole) and ejection pressure.

In addition, in the past be 2 grades with rotary compression member lamination, to be compressed by low voltage side compression member and high pressure side compression member in the 2 stage rotary compressor of 2 grades of fluid boil down tos, there is following this structure: allow the internal diameter size of pressing chamber of low voltage side compression member greater than the internal diameter size of the pressing chamber of high pressure side compression member, and the corresponding position of external lateral portion on the dividing plate that described low voltage side compression member and described high pressure side compression member are separated and pressing chamber described high pressure side compression member, the 2nd of described low voltage side compression member the 1st ejection valve chamber except that being located at main bearing (end plate) on is set sprays valve chamber (spraying hole) (for example with reference to patent documentation 2).

In addition, in seal container, have electric element and compressing member, and this compressing member electric element thus drives, and possess in the compressor of the pressing chamber that compresses the refrigerant that contains lubricant oil, have following this structure: described pressing chamber possesses the introducing port that is used for importing the refrigerant that contains lubricant oil in this pressing chamber, with the 1st ejiction opening of compressed refrigerant ejection and the 2nd ejiction opening that lubricant oil is sprayed, the 1st ejection valve is being set in described the 1st ejiction opening, when the refrigerant that is compressed in the described pressing chamber reaches the 1st pressure, this the 1st ejection valve is opened, the 2nd ejection valve is being set in described the 2nd ejiction opening, and this 2nd ejection valve is opened (for example with reference to patent documentation 3) being higher than under the 2nd pressure of described the 1st pressure.

Patent documentation 1: Japanese Utility Model is opened clear 56-175594 communique in fact

Patent documentation 2: the Japan Patent spy opens clear 63-272988 communique

Patent documentation 3: the Japan Patent spy opens the 2006-275035 communique

Summary of the invention

In the rotary compressor of variable-frequency type, have following problem: especially when high speed rotating, the caused overcompression loss of the refrigerant flow resistance in the spraying hole is bigger, thereby causes rotary compressor efficient to reduce.If increase the aperture of spraying hole in order to reduce flow resistance, then need to increase the thickness of valve from the intensity of ejection valve, and if the thickening of the thickness of valve then can produce hysteresis when valve is opened, this can cause the overcompression loss.

In addition, according to the prior art of being put down in writing in the patent documentation 1, have following problem: because upper bearing and lower bearing all are provided with ejection port (spraying hole) on the two, so the structure of compression member is complicated, the manufacture cost of rotary compressor increases.In addition, according to the prior art of being put down in writing in the patent documentation 2, there is following problem: because main bearing and dividing plate all are provided with ejection valve chamber (spraying hole) on the two, so it is the same with the prior art of being put down in writing in the patent documentation 1, the structure of compression member is complicated, and the manufacture cost of rotary compressor increases.

In addition, according to the prior art of being put down in writing in the patent documentation 3, when in the circulation of refrigeration and cold storage dual-purpose, only refrigerating work, be that the cold media air suction passage of two stage compressor leading portion side (low voltage side) is blocked fully, and only suck cold media air from rear section side (high pressure side).Can produce following problem this moment, the pressing chamber of leading portion side (low voltage side) is near vacuum, lubricant oil penetrates in the pressing chamber from the micro-gap of the part of formation pressing chamber, make pressing chamber become the hydraulic pressure state that contracts, and cause the efficient of compressor significantly to reduce, in order to prevent this situation, the 2nd ejiction opening sprays lubricant oil in pressing chamber.Therefore have following problem, this 2nd ejiction opening can not reduce by the caused overcompression loss of the refrigerant flow resistance in the ejiction opening when the compressor high speed rotating.

The present invention's purpose in view of the above problems is to provide a kind of can the reduction by the caused overcompression of the refrigerant flow resistance in the compression member spraying hole to lose, and the lower rotary compressor of manufacture cost.

In order to solve described problem and to reach purpose, rotary compressor of the present invention comprises: compression member, and it possesses: columnar cylinder; Two end plates is used to seal the two ends of described cylinder; Piston remains on the eccentric part by the running shaft of motoring rotation, revolve round the sun in cylinder along the cylinder inner wall of described cylinder, and and the cylinder inner wall of described cylinder between form working space; And blade, in the blade groove of described cylinder, in described working space, give prominence to and the described piston of butt, this working space is divided into suction chamber and pressing chamber; Compressor housing, it accommodates described compression member and airtight; Inlet hole, it is arranged on the described cylinder, and described suction chamber is communicated with the low voltage side of refrigeration cycle; Spraying hole, it is arranged on one of described end plate, and described pressing chamber is communicated with the high pressure side of refrigeration cycle; Described rotary compressor is characterised in that: on a described end plate, the auxiliary spraying hole except that described spraying hole is set.

Because rotary compressor of the present invention is being provided with on the end plate of spraying hole, be provided with the auxiliary spraying hole except that spraying hole, increased the gross area of spraying hole, so the recess that need on two end plates, all not be processed to form the seat portion around spraying hole, the spraying hole and take in the ejection valve, and given play to the effect that can cut down finished cost.

Description of drawings

Fig. 1 is the embodiment's 1 of an expression rotary compressor of the present invention sectional arrangement drawing.

Fig. 2 is the plan view of compression member.

Fig. 3 is the birds-eye perspective with the compression member after the end plate closes.

Fig. 4 is the figure of the revolution angle and the relation of ejection between the pressure of expression piston, is that rotary compressor is when working under refrigerant R410A, refrigeration rated condition, with the corresponding pressing chamber pressure in piston revolution angle.

Fig. 5 is the revolution angle of expression piston and the figure of the relation between the compression chamber volume.

Fig. 6 is the figure of the relation between the rate of volumetric change of expression revolution angle of piston and pressing chamber.

Fig. 7 is the embodiment's 2 of an expression rotary compressor of the present invention sectional arrangement drawing.

Fig. 8 is the worm's eye view of low voltage side compression member.

Fig. 9 is the drawing in side sectional elevation of high pressure side compression member.

Figure 10 is the face upwarding view with the low voltage side compression member after the low voltage side end plate closes.

Figure 11 is the figure of the revolution angle and the relation between the low voltage side ejection pressure of expression piston, the rotary compressor that is two stage compression is when making the work of warming up under-7 ℃ the condition at refrigerant R410A, outer temperature, with low voltage side piston revolution angle corresponding low voltage side pressing chamber pressure.

Figure 12 is the worm's eye view of low voltage side compression member of other forms of expression embodiment 2.

Figure 13 is the face upwarding view of the low voltage side compression member after expression embodiment's 2 the usefulness low voltage side end plate closes of other forms.

Figure 14 is the embodiment's 3 of an expression rotary compressor of the present invention sectional arrangement drawing.

Figure 15 is the drawing in side sectional elevation of the 1st, the 2nd compression member.

Figure 16 is the embodiment's 4 of an expression rotary compressor of the present invention compression member plan view.

Figure 17 is the plan view of compression member of the embodiment's 1 of expression rotary compressor as a reference and in addition.

Embodiment

Below, come the embodiment of rotary compressor of the present invention is described in detail according to graphic.In addition, the present invention is not limited to these embodiments.

(embodiment 1)

Fig. 1 is the embodiment's 1 of an expression rotary compressor of the present invention sectional arrangement drawing, Fig. 2 is the plan view of compression member, Fig. 3 is the birds-eye perspective with the compression member after the end plate closes, Fig. 4 is the figure of the relation between the pressure of expression revolution angle of piston and pressing chamber, Fig. 5 is the figure of the relation between the volume of expression revolution angle of piston and pressing chamber, and Fig. 6 is the figure of the relation between the rate of volumetric change of the revolution angle of expression piston and pressing chamber.

As shown in Figure 1, embodiment 1 rotary compressor 1 possesses the motor 11 of compression member 12 and drive compression parts 12 in the inside of airtight cylindrical shape compressor housing 10.

Stator 111 hot chargings of motor 11 are fixed on the inner peripheral surface of compressor housing 10.The rotor 112 of motor 11 is configured in the central part of stator 111, and hot charging is fixed on the running shaft 15, and this running shaft 15 is with motor 11 and compression member 12 mechanical connections.

As shown in Figures 1 and 2, compression member 12 possesses the cylinder 121 of short cylinder shape.In cylinder 121, be formed with the cylindrical shape cylinder inner wall 123 concentric with motor 11.In cylinder inner wall 123, disposing columnar piston 125, the external diameter of this piston 125 is less than the diameter of cylinder inner wall 123, and, between cylinder inner wall 123 and piston 125, form working space 130 (compression volume) with refrigerant sucks, compression sprays then.

In cylinder 121, be formed with from cylinder inner wall 123 towards radially and span be the blade groove 128 of whole cylinder height, in blade groove 128, chimeric plate shaped blade 127.Though do not have diagram, dispose spring in the deep of blade groove 128.At ordinary times, by the repulsion of this spring, blade 127 is given prominence in working space 130 in blade groove 128, and the outer circumferential face of front end butt piston 125, and by blade 127, working space 130 (compression volume) is divided into suction chamber 131 and pressing chamber 133.

In addition, be formed with back pressure and import path 129 in cylinder 121, it is the deep and compressor housing 10 internal communication of blade groove 128, and applies back pressure to blade 127.In cylinder 121, for refrigerant being drawn in the suction chamber 131 and be provided with the inlet hole 135 that is communicated with suction chamber 131.

In addition, as shown in Figure 1, be provided with an end plate 160A, close the top of the working space 130 of cylinder 121 in the upper end portion of cylinder 121.And, be provided with another end plate 160B in the underpart of cylinder 121, close the bottom of working space 130.

On another end plate 160B, be formed with supplementary bearing parts 161B, supplementary bearing supporting part 151 rotations of running shaft 15 are being supported by supplementary bearing parts 161B freely.In addition, at one end on the plate 160A, be formed with main bearing parts 161A, the main bearing supporting part 153 of running shaft 15 is being supported in rotation freely on main bearing parts 161A.

Running shaft 15 possesses eccentric eccentric part 152, and eccentric part 152 is keeping the piston 125 of compression member 12 in freely the mode of can rotating.When running shaft 15 rotations, piston 125 revolves round the sun with the clockwise direction of Fig. 2 and Fig. 3 in cylinder 121 along cylinder inner wall 123, and blade 127 moves back and forth along with the revolution of piston 125.By the motion of piston 125 and blade 127, the volume of suction chamber 131 and pressing chamber 133 changes continuously, and compression member 12 sucks refrigerant compression ejection then continuously.

As shown in Figure 1, at one end the upside of plate 160A is being provided with silencer cover 170, forms anechoic chamber 180 between this silencer cover 170 and an end plate 160A.And, the ejection of compression member 12 partly by anechoic chamber 180 and with compressor housing 10 internal communication.That is to say, at one end near the blade 127 of plate 160A, be provided with, and the ejection valve 200 that prevents compressed coolant backflow be set at spraying hole 190 places with the pressing chamber 133 of cylinder 121 and the spraying hole 190 of anechoic chamber's 180 connections.

In addition, in order to limit the valve amount of opening of ejection valve 200, will spray valve compactor 201 with rivet and be fixed on together on the end plate 160A with ejection valve 200.Anechoic chamber 180 can reduce the pressure pulsation of ejection refrigerant.

Another end plate 160B, cylinder 121, an end plate 160A and silencer cover 170 fasten as one by not shown bolt.In the compression member 12 that fastens as one by bolt, the peripheral part of an end plate 160A anchors on the compressor housing 10 by spot welding, thereby compression member 12 is fixed in the compressor housing 10.

As shown in Figure 1, on the periphery wall of columnar compressor housing 10, be provided with penetration hole 101.In addition, the accumulator 25 that is made of cylindrical shape seal container independently remains on the lateral part of compressor housing 10 by accumulator fixing frame 251 and accumulator locking hoop 253.

Top center at accumulator 25, connecting the system's connecting tube 255 that is connected with the low voltage side of refrigeration cycle, in the bottom penetration hole 257 that is arranged on accumulator 25 bottoms, connecting low voltage liaison net pipe 31, one end of this low voltage liaison net pipe 31 extends to till the inner and upper of accumulator 25 always, and the other end is connected with the other end of suction pipe 104.

By accumulator 25 low pressure refrigerant of refrigeration cycle is imported to low voltage liaison net pipe 31 in the compression member 12, by penetration hole 101 and suction pipe 104 and be connected with the inlet hole 135 (with reference to Fig. 2) of cylinder 121.That is to say that inlet hole 135 is connected with the low voltage side of refrigeration cycle.

Connecting spraying pipe 107 at the top of compressor housing 10, the high pressure side of this spraying pipe 107 and refrigeration cycle is connected, and the high pressure refrigerant is ejected into the high pressure side of refrigeration cycle.That is to say that spraying hole 190 is connected with the high pressure side of refrigeration cycle.

Enclosing lubricant oil in compressor housing 10 arrives till the height of about cylinder 121, lubricant oil circulates in compression member 12 by the not shown wing pump that is installed in running shaft 15 bottoms, will seal owing to the compression volume lubricated and compression refrigerant that micro-gap forms of sliding part.

As shown in Figure 3, the characteristic structure as embodiment 1 rotary compressor 1 is being provided with on the end plate 160A of spraying hole 190, is provided with the auxiliary spraying hole 190A that the high pressure side with pressing chamber 133 and refrigeration cycle is communicated with.Auxiliary spraying hole 190A also is provided with ejection valve 200 and ejection valve compactor 201.

In addition, as shown in Figures 2 and 3, on the cylinder inner wall 123 be located at the corresponding position, position of the spraying hole 190 on the end plate 160A, be provided with the ejection groove 124 that is communicated with spraying hole 190, on cylinder inner wall 123,, be provided with and ejection groove 124A that auxiliary spraying hole 190A is communicated with corresponding position, the position of auxiliary spraying hole 190A.Ejection groove 124,124A can make the flow resistance reduction that is ejected into the refrigerant spraying hole 190 and the auxiliary spraying hole 190A from pressing chamber 133.

At this, with auxiliary spraying hole 190A be arranged on along cylinder inner wall 123, on the revolution direction of piston 125 with the position of blade groove 128 at a distance of 230 °～300 °.The reason of She Zhiing is like this, as shown in Figure 3, prevent that in order not make spraying hole 190 and auxiliary spraying hole 190A from producing ejection valve 200 and ejection valve compactor 201 (with reference to the Fig. 1) that flow backwards in order to take in, and it is interfering with each other and the 190R of spine is disappeared independently to be arranged on recess 190K, 190AK on the end plate 160A respectively, the reduction in strength that does not cause end plate 160A, thus need to assist spraying hole 190A be arranged on along cylinder inner wall 123, on the revolution direction of piston 125 with blade groove 128 at a distance of 300 ° with interior position.

On the other hand, shown in 4, when piston 125 begins to revolve round the sun in a clockwise direction from the position of blade groove 128 about 210 ° the time, the pressure of pressing chamber 133 reaches the ejection pressure of refrigeration rated condition, and the ejection valve 200 of sealing spraying hole 190 and auxiliary spraying hole 190A is opened.In addition, as shown in Figure 6, in rotary compressor, piston 125 during from 135 °～225 ° of the position of blade groove 128 revolution the compression chamber volume variance ratio bigger, that is to say that the ejection flow velocity is bigger.

Therefore, when ejection valve 200 is opened to 210 °, the flow velocity maximum of ejection refrigerant, thereby the pressure loss is bigger.Like this, because auxiliary tap hole 190A is opened to 210 at ejection valve 200.The time, if connected state is not compressed the end face of chamber 133 and piston 125 and just blocks and can work effectively, thus this auxiliary spraying hole 190A must be arranged on along cylinder inner wall 123, on the revolution direction of piston 125 with blade groove 128 at a distance of the position more than at least 230 °.But, the position of auxiliary spraying hole 190A is not limited to described position among the present invention, under the sufficient condition of the intensity of end plate 160A in the employed rotary compressor, also can omit the described 190R of spine, and will assist spraying hole 1990A be arranged on along cylinder inner wall 123, on the revolution direction of piston 125 with blade groove 128 at a distance of the position more than 300 °.

Below, the work of rotary compressor 1 discussed above is described.When rotary compressor 1 running, be separated into from the refrigerants that the low voltage side of refrigeration cycle flow in the accumulator 25 by system's connecting tube 255, liquid coolant is in the bottom of accumulator 25, and gas coolant is on the top of accumulator 25.

When piston 125 revolution motion the and when volume of suction chamber 131 was enlarged, the gas coolants in the accumulator 25 were inhaled in the suction chamber 131 of compression member 12 by low voltage liaison net pipe 31, suction pipe 104 and inlet hole 135 in cylinder 121.When piston 125 public affairs turned around, suction chamber 131 and inlet hole 135 were blocked, and switch to pressing chamber 133, and refrigerant is compressed.

When the pressure of the refrigerant in the compressed pressing chamber 133 reaches the pressure of the anechoic chamber 180 that is positioned at the downstream side that is arranged on the ejection valve 200,200 on spraying hole 190 and the auxiliary spraying hole 190A, when just spraying pressure, ejection valve 200,200 is opened, refrigerant is by spraying hole 190 and auxiliary spraying hole 190A, be ejected in the anechoic chamber 180 with less flow resistance, after in anechoic chamber 180, will causing the pressure pulsation reduction of noise, become the high pressure refrigerant and be ejected in the compressor housing 10.Then, the top that not shown core body otch or gap core body and coil between of high pressure refrigerant by the stator 111 of motor 11 is transported to motor 11 is ejected into the high pressure side of refrigeration cycle then by spraying pipe 107.

According to embodiment 1 rotary compressor 1, because refrigerant is to be ejected in the anechoic chamber 180 with less flow resistance by spraying hole 190 and auxiliary spraying hole 190A, so can reduce the overcompression loss.And, because the recess 190K that need on two

end plates

160L, 160H, all not be processed to form the seat portion around spraying hole 190, the spraying hole and take in ejection valve 200, so can cut down finished cost.

(embodiment 2)

Fig. 7 is the embodiment's 2 of an expression rotary compressor of the present invention sectional arrangement drawing, Fig. 8 is the worm's eye view of low voltage side compression member, Fig. 9 is the drawing in side sectional elevation of high pressure side compression member, Figure 10 is the face upwarding view with the low voltage side compression member after the low voltage side end plate closes, Figure 11 is the figure of the relation between the pressure of expression revolution angle of piston and low voltage side pressing chamber, Figure 12 is the worm's eye view of low voltage side compression member of other forms of expression embodiment 2, and Figure 13 is the face upwarding view of the low voltage side compression member after expression embodiment's 2 the usefulness low voltage side end plate closes of other forms.

As shown in Figure 7, embodiment 2 rotary compressor 2 possesses the motor 11 of compression member 12 and drive compression parts 12 in the inside of airtight cylindrical shape compressor housing 10.

Stator 111 hot chargings of motor 11 are fixed on the inner peripheral surface of compressor housing 10.Middle body and hot charging that the rotor 112 of motor 11 is configured in stator 111 are fixed on the running shaft 15, and this running shaft 15 is with motor 11 and compression member 12 mechanical connections.

Compression member 12 possesses low voltage side compression member 12L and high pressure side compression member 12H, and this high pressure side compression member 12H and low voltage side compression member 12L are connected in series, and lamination is arranged on the upside of low voltage side compression member 12L.As shown in Figures 7 and 8, low voltage side compression member 12L possesses the low voltage side cylinder 121L of short cylinder shape, and as Fig. 7 and shown in Figure 9, high pressure side compression member 12H possesses the high pressure side cylinder 121H of short cylinder shape.

In low voltage side cylinder 121L and high pressure side cylinder 121H, form columnar low voltage side, high pressure side cylinder inner wall 123L, the 123H concentric respectively with motor 11.In low voltage side, high pressure side cylinder

inner wall

123L, 123H, dispose columnar low voltage side, high pressure side piston 125L, the 125H of external diameter respectively less than the diameter of low voltage side, high pressure side cylinder

inner wall

123L, 123H, and between low voltage side, high pressure side cylinder

inner wall

123L, 123H and low voltage side, high

pressure side piston

125L, 125H, form refrigerant is sucked compression low voltage side, high pressure side working space 130L, the 130H (compression volume) of ejection then.

In low voltage side, high

pressure side cylinder

121L, 121H, formation from low voltage side, high pressure side cylinder

inner wall

123L, 123H towards radially and span be low voltage side, high pressure side blade groove 128L, the 128H of whole cylinder height, in low voltage side, high pressure

side blade groove

128L, 128H, respectively chimeric plate shaped low voltage side, high

pressure side blade

127L, 127H.

For the volume of the high pressure side working space 130H that makes high pressure side compression member 12H volume less than the low voltage side working space 130L of low voltage side compression member 12L, and make high pressure side cylinder 121H, high pressure side piston 125H and high pressure side blade 127H at the height on the axle direction respectively less than low voltage side cylinder 121L, low voltage side piston 125L and the height of low voltage side blade 127L on axle direction.

Though not shown, the deep at low voltage side, high pressure

side blade groove

128L, 128H disposes low voltage side, high pressure side spring.At ordinary times, repulsion by this low voltage side, high pressure side spring, low voltage side, high

pressure side blade

127L, 127H give prominence in low voltage side, high pressure

side working space

130L, 130H in low voltage side, high pressure

side blade groove

128L, 128H, and the outer circumferential face of front end butt low voltage side, high

pressure side piston

125L, 125H, by low voltage side, high

pressure side blade

127L, 127H, low voltage side, high pressure

side working space

130L, 130H (compression volume) are divided into low voltage side, high pressure

side suction chamber

131L, 131H and low voltage side, high pressure

side pressing chamber

133L, 133H.

And, in low voltage side, high

pressure side cylinder

121L, 121H, form low voltage side, high pressure side back

pressure importing path

129L, 129H, these back pressures import

path

129L, 129H deep and compressor housing 10 internal communication with low voltage side, high pressure

side blade groove

128L, 128H, and apply back pressure to low voltage side, high

pressure side blade

127L, 127H.

For refrigerant being drawn among low voltage side, high pressure side suction chamber 131L, the 131H, in low voltage side, high

pressure side cylinder

121L, 121H, be provided with the low voltage side, high pressure side inlet hole 135L, the 135H that are connected with low voltage side, high pressure

side suction chamber

131L, 131H.

In addition, as shown in Figure 7, between low voltage side cylinder 121L and high pressure side cylinder 121H, be provided with intermediate clapboard 140, mark off the low voltage side working space 130L of low voltage side cylinder 121L and the high pressure side working space 130H of high pressure side cylinder 121H.In the underpart of low voltage side cylinder 121L, be provided with low voltage side end plate 160L, it closes the low voltage side working space 130L of low voltage side cylinder 121L.And, in the upper end portion of high pressure side cylinder 121H, being provided with high pressure side end plate 160H, it closes the high pressure side working space 130H of high pressure side cylinder 121H.

Formed supplementary bearing parts 161L on low voltage side end plate 160L, the supplementary bearing supporting part 151 of running shaft 15 is being supported in rotation freely on supplementary bearing parts 161L.In addition, on the end plate 160H of high pressure side, formed main bearing parts 161H, the main bearing supporting part 153 of running shaft 15 is being supported in rotation freely on main bearing parts 161H.

Running shaft 15 possesses stagger each other 180 ° phase place and eccentric low voltage side eccentric part 152L and high pressure side eccentric part 152H, low voltage side eccentric part 152L is keeping the low voltage side piston 125L of low voltage side compression member 12L in freely the mode of can rotating, and high pressure side eccentric part 152H is keeping the high pressure side piston 125H of high pressure side compression member 12H in freely the mode of can rotating.

When running shaft 15 rotations, low voltage side, high

pressure side piston

125L, 125H are along low voltage side, high pressure side cylinder

inner wall

123L, 123H, revolve round the sun (revolving round the sun with counter clockwise direction among Fig. 9) with the clockwise direction among Fig. 8 in low voltage side, high

pressure side cylinder

121L, 121H, low voltage side, high

pressure side blade

127L, 127H are along with the revolution of low voltage side, high

pressure side piston

125L, 125H moves back and forth.Motion by low voltage side, high

pressure side piston

125L, 125H and low voltage side, high

pressure side blade

127L, 127H, the volume of low voltage side, high pressure

side suction chamber

131L, 131H and low voltage side, high pressure

side pressing chamber

133L, 133H changes continuously, and compression member 12 sucks refrigerant compression ejection then continuously.

As shown in Figure 7, the downside at low voltage side end plate 160L is provided with low voltage side silencer cover 170L, the formation low voltage side 180L of anechoic chamber between this low voltage side silencer cover 170L and low voltage side end plate 160L.And the ejection part of low voltage side compression member 12L is to the 180L of low voltage side anechoic chamber opening.That is to say, near the low voltage side blade 127L of low voltage side end plate 160L, be provided with the low voltage side pressing chamber 133L of low voltage side cylinder 121L and the low voltage side spraying hole 190L of the 180L of low voltage side anechoic chamber connection, at low voltage side spraying hole 190L place, be provided for preventing the low voltage side ejection valve 200L of compressed coolant backflow.

As shown in figure 10, the 180L of low voltage side anechoic chamber is a chamber that connection circularizes, and it is the part with the intermediate connection path of the suction side connection of the ejection side of low voltage side compression member 12L and high pressure side compression member 12H.The 180L of low voltage side anechoic chamber can reduce the pressure pulsation of ejection refrigerant.

In addition, will be fixed on together on the low voltage side end plate 160L in order to the low voltage side ejection valve compactor 201L and the low voltage side ejection valve 200L of the valve amount of opening of restriction low voltage side ejection valve 200L with rivet.And, in the periphery wall portion of low voltage side end plate 160L, be provided with the low voltage side noise reduction spraying hole 210L of the refrigerant in the 180L of low voltage side anechoic chamber to the outside ejection.Low voltage side noise reduction spraying hole 210L is provided with diametrically, and different with the low voltage side of compression member 12, phase place that high pressure

side inlet hole

135L, 135H made progress in 10 weeks of compressor housing.

As shown in Figure 7, the upside at high pressure side end plate 160H is provided with high pressure side silencer cover 170H, the formation 180H of anechoic chamber, high pressure side between this high pressure side silencer cover 170H and high pressure side end plate 160H.Near the blade 127H of the high pressure side of high pressure side end plate 160H, be provided with the high pressure side pressing chamber 133H of high pressure side cylinder 121H and the high pressure side spraying hole 190H of the 180H of anechoic chamber, high pressure side connection, at spraying hole 190H place, high pressure side, be provided with the high pressure side ejection valve 200H that prevents compressed coolant backflow.And, in order to limit the valve amount of opening of high pressure side ejection valve 200H, the high pressure side is sprayed valve compactor 201H and high pressure side ejection valve 200H one reinstate rivet and be fixed on the end plate 160H of high pressure side.The 180H of anechoic chamber, high pressure side can reduce the pressure pulsation of ejection refrigerant.

Low voltage side cylinder 121L, low voltage side end plate 160L, low voltage side silencer cover 170L, high pressure side cylinder 121H, high pressure side end plate 160H, high pressure side silencer cover 170H and intermediate clapboard 140 fasten as one by not shown bolt.In the compression member 12 that fastens as one by bolt, the peripheral part of high pressure side end plate 160H anchors on the compressor housing 10 by spot welding, thereby compression member 12 is fixed in the compressor housing 10.

As shown in Figure 7, at the periphery wall of cylindrical shape compressor housing 10, along setting gradually the 1st, the 2nd, the 3rd penetration hole 101,102,103 from the bottom with axially beginning to be spaced from each other.In addition, remain on the lateral part of compressor housing 10 by the accumulator support 251 and the accumulator collar 253 by the accumulator 25 that independently columnar seal container constituted.

Top center at accumulator 25, connecting the system's connecting tube 255 that is connected with the low voltage side of refrigeration cycle, in the bottom penetration hole 257 that is arranged on accumulator 25 bottoms, connecting low voltage liaison net pipe 31, one end of this low voltage liaison net pipe 31 extends to till the inner and upper of accumulator 25 always, and the other end is connected with the other end of low voltage side suction pipe 104.

By accumulator 25 low pressure refrigerant of refrigeration cycle is imported to low voltage liaison net pipe 31 among the low voltage side compression member 12L, by the 2nd penetration hole 102 and low voltage side suction pipe 104 and be connected with the low voltage side inlet hole 135L of low voltage side cylinder 121L.That is to say that low voltage side inlet hole 135L is connected with the low voltage side of refrigeration cycle.

The low voltage side noise reduction spraying hole 210L of the 180L of low voltage side anechoic chamber is connected with an end of low voltage side spraying pipe 105 by the 1st penetration hole 101, the high pressure side inlet hole 135H of high pressure side cylinder 121H is connected with an end of high pressure side suction pipe 106 by the 3rd penetration hole 103, and the other end of the other end of low voltage side spraying pipe 105 and high pressure side suction pipe 106 is connected by middle liaison tube 23.Low voltage liaison net pipe 31 and middle liaison tube 23 are bent to form and do not disturb mutually.

The ejection of high pressure side compression member 12H is partly by 180H of anechoic chamber, high pressure side and compressor housing 10 internal communication.That is to say, on the end plate 160H of high pressure side, be provided with the high pressure side pressing chamber 133H of high pressure side cylinder 121H and the high pressure side spraying hole 190H of the 180H of anechoic chamber, high pressure side connection,, be provided for preventing the high pressure side ejection valve 200H of compressed coolant backflow at spraying hole 190H place, high pressure side.

Connecting spraying pipe 107 at the top of compressor housing 10, this spraying pipe 107 is connected with the high pressure side of refrigeration cycle, and the high pressure refrigerant is ejected into the high pressure side of refrigeration cycle.That is to say that high pressure side spraying hole 190H is connected with the high pressure side of refrigeration cycle.

Enclosing lubricant oil in compressor housing 10 arrives till the height of about high pressure side cylinder 121H, lubricant oil circulates in compression member 12 by the not shown wing pump that is installed in running shaft 15 bottoms, the regional seal of the compression volume of the compression refrigerant that will be formed by the lubricated and micro-gap of sliding part.

As shown in figure 10, characteristic structure as embodiment 2 rotary compressor 2, be provided with on the low voltage side end plate 160L of low voltage side spraying hole 190L, be provided with the auxiliary spraying hole 190LL of low voltage side low voltage side pressing chamber 133L and high pressure side compression member 12H connection.Also be provided with low voltage side ejection valve 200L at the auxiliary spraying hole 190LL place of low voltage side.

In addition, as Fig. 8 and shown in Figure 10, cylinder inner wall 123L with the corresponding position, position that is located at the spraying hole 190L on the low voltage side end plate 160L, be provided with the ejection groove 124L that is communicated with spraying hole 190L, on cylinder inner wall 123L,, be provided with and ejection groove 124LA that auxiliary spraying hole 190LL is communicated with corresponding position, the position of spraying hole 190LL.Ejection groove 124L, 124LA can make the flow resistance reduction that is ejected into the refrigerant spraying hole 190L and the auxiliary spraying hole 190LL from pressing chamber 133L.

At this, with the auxiliary spraying hole 190LL of low voltage side be arranged on along low voltage side cylinder inner wall 123L, on the revolution direction of low voltage side piston 125L with the position of low voltage side blade groove 128L at a distance of 190 °～300 °.300 ° of reasons with interior position are identical with embodiment 1 as being arranged on.

On the other hand, as shown in figure 11, when low voltage side piston 125L begins to revolve round the sun in a clockwise direction from the position of low voltage side blade groove 128L about 170 ° the time, the pressure of low voltage side pressing chamber 133L reaches low voltage side ejection pressure (intermediate pressure), and the low voltage side ejection valve 200L of the auxiliary spraying hole 190LL of sealing low voltage side spraying hole 190L and low voltage side opens.That is to say because pressure ratio is less than embodiment 1, so about in advance 40 ° open.

In addition, identical with embodiment 1, as shown in Figure 6, the compression chamber volume variance ratio of low voltage side piston 125L during from 135 °～225 ° of the position of low voltage side blade groove 128L revolution is bigger, that is to say that the ejection flow velocity is bigger.Therefore, when low voltage side ejection valve 200L opens 170 °, the flow velocity maximum of ejection refrigerant, the pressure loss is bigger.Therefore, when ejection valve 200 is opened 170 °, because if the auxiliary spraying hole 190LL of low voltage side is in connected state and is not blocked by the end face of low voltage side pressing chamber 133L and low voltage side piston 125L, just can work effectively, thus the auxiliary spraying hole 190LL of low voltage side must be arranged on along low voltage side cylinder inner wall 123L, on the sense of rotation of low voltage side piston 125L with low voltage side blade groove 128L at a distance of the position more than at least 190 °.

Below, the work of rotary compressor 2 discussed above is described.When rotary compressor 2 operation, be separated into from the refrigerants that freeze the circuit low voltage side and flow in the accumulator 25 by system's connecting tube 255: liquid coolant is in the bottom of accumulator 25, and gas coolant is on the top of accumulator 25.

Low voltage side piston 125L carries out in low voltage side cylinder 121L after revolution motion enlarges the volume of low voltage side suction chamber 131L, and the gas coolants in the accumulator 25 are inhaled in the low voltage side suction chamber 131L of low voltage side compression member 12L through low voltage liaison net pipe 31, low voltage side suction pipe 104 and low voltage side inlet hole 135L.When low voltage side piston 125L carried out a circle revolution, low voltage side suction chamber 131L and low voltage side inlet hole 135L were blocked, and switch among the low voltage side pressing chamber 133L, and refrigerant is compressed in low voltage side pressing chamber 133L.

The pressure of the refrigerant in the compressed low voltage side pressing chamber 133L reaches and is positioned at the pressure that the low voltage side that is arranged on low voltage side spraying hole 190L of place and the auxiliary spraying hole 190LL place of low voltage side sprays the 180L of low voltage side anechoic chamber in

valve

200L, 200L downstream side, just intermediate pressure

When (low voltage side ejection pressure), low voltage

side ejection valve

200L, 200L open, refrigerant is through low voltage side spraying hole 190L and the auxiliary spraying hole 190LL of low voltage side, be ejected among the 180L of low voltage side anechoic chamber with less flow resistance, and after reduction causes the pressure pulsation of noise in the 180L of low voltage side anechoic chamber, be transported among the high pressure side suction chamber 131H of high pressure side compression member 12H through low voltage side spraying pipe 105, middle liaison tube 23 and high pressure side inlet hole 135H.

The refrigerant that is transported among the high pressure side suction chamber 131H of high pressure side compression member 12H is compressed, sprays by the action effect identical with low voltage side compression member 12L, and after in the 180H of anechoic chamber, high pressure side, reducing pressure pulsation, become the high pressure refrigerant and be ejected in the compressor housing 10.Then, the top that core body otch that the stator 111 of high pressure refrigerant by motor 11 is not shown or the gap between core body and the coil are transported to motor 11 is ejected into the high pressure side of refrigeration cycle then through spraying pipe 107.

According to embodiment 2 rotary compressor 2,, can reduce the overcompression loss thus because refrigerant is ejected among the 180L of low voltage side anechoic chamber with less flow resistance through low voltage side spraying hole 190L and the auxiliary spraying hole 190LL of low voltage side.And, compare with the situation that the auxiliary spraying hole of low voltage side is arranged on the intermediate clapboard 140, can reduce manufacture cost.

And, in the secondary compress mode,, be generally 1.5～2.0 so the pressure of low voltage side is less because be to share pressure ratio with two pressing chambers.That is to say, because refrigerant is from the pressing chamber ejection, so it is effective especially for reducing overcompression loss (flow resistance) that auxiliary spraying hole is set under the bigger state of volume.

Figure 12 is the worm's eye view of low voltage side compression member of other forms of expression embodiment 2, and Figure 13 is the face upwarding view of the low voltage side compression member after expression embodiment's 2 the usefulness low voltage side end plate closes of other forms.In other forms of Figure 12 and embodiment 2 shown in Figure 13, L shaped low voltage side ejection valve and low voltage side ejection valve compactor (not shown) that be integral will be taken in order to prevent that the auxiliary ejiction opening 190LL of low voltage side spraying hole 190L and low voltage side from flowing backwards, and L shaped recess is set, this L shaped recess makes the recess 190K, the mutual interference of 190AK phase that are located on the low voltage side end plate 160L, the 190R of spine is disappeared, and makes L shaped low voltage side ejection valve of all-in-one-piece and the total mutually fixed component 190S of low voltage side ejection valve compactor.

Other forms according to embodiment 2, by near low voltage side spraying hole 190L and the auxiliary ejiction opening 190LL of low voltage side, making recess separate, can guarantee the intensity of low voltage side end plate 160L, and, fixed component 190S by only making low voltage side ejection valve and low voltage side ejection valve compactor is a common sparing, can make low voltage side ejection valve and low voltage side ejection valve compactor integrated, thereby can reduce cost.

(embodiment 3)

Figure 14 is the embodiment's 3 of an expression rotary compressor of the present invention sectional arrangement drawing, and Figure 15 is the drawing in side sectional elevation of the 1st, the 2nd compression member.

As shown in figure 14, embodiment 3 rotary compressor 3 possesses the motor 11 of compression member 12, drive compression parts 12 in the inside of airtight cylindrical shape compressor housing 10.

Stator 111 hot chargings of motor 11 are fixed on the inner peripheral surface of compressor housing 10.Central part and hot charging that the rotor 112 of motor 11 is configured in stator 111 are fixed on the running shaft 15, and this running shaft 15 is with motor 11 and compression member 12 mechanical connections.

Compression member 12 possesses the 1st compression member 12S and the 2nd compression member 12T, and this 2nd compression member 12T and the 1st compression member 12S are parallel to be provided with, and lamination is arranged on the upside of the 1st compression member 12S.1st, the 2nd compression member 12S, 12T possess the 1st, the 2nd cylinder 121S, the 121T of short cylinder shape.

As shown in figure 15, in the 1st, the

2nd cylinder

121S, 121T, form the 1st, the 2nd cylinder inner wall 123S, 123T with the concentric circle of motor 11.In the 1st, the 2nd cylinder inner wall 123S, 123T, dispose cylindrical shape 1st, 2nd piston 125S, the 125T of external diameter respectively less than cylinder bore, between the 1st, the 2nd cylinder inner wall 123S, 123T and the 1st, the

2nd piston

125S, 125T, form the 1st, the 2nd working space 130S, 130T (compression volume) with refrigerant sucks, compression sprays then.

In the 1st, the

2nd cylinder

121S, 121T, formation from the 1st, the 2nd cylinder inner wall 123S, 123T towards radially and span be the 1st, the 2nd blade groove 128S, the 128T of whole cylinder height, in the 1st, the 2nd blade groove 128S, 128T, respectively chimeric plate shaped the 1st, the 2nd blade 127S, 127T.

For the volume of the 2nd working space 130T that makes the 2nd compression member 12T volume, and make the 2nd cylinder 121T, the 2nd piston 125T and the 2nd blade 127T height in the axial direction be lower than the 1st cylinder 121S, the 1st piston 125S and the 1st blade 127S height in the axial direction respectively less than the 1st working space 130S of the 1st compression member 12S.

Though not shown, disposing the 1st, the 2nd spring in the deep of the 1st, the 2nd blade groove 128S, 128T.At ordinary times, repulsion by the 1st, the 2nd spring, 1st, the 2nd blade 127S, 127T give prominence in the 1st, the 2nd working space 130S, 130T in the 1st, the 2nd blade groove 128S, 128T, and the outer circumferential face of front end butt the 1st, the

2nd piston

125S, 125T, by the 1st, the 2nd blade 127S, 127T, the 1st, the 2nd working space 130S, 130T (compression volume) are divided into the 1st, the 2nd suction chamber 131S, 131T and the 1st, the 2nd pressing chamber 133S, 133T.

In addition, in the 1st, the

2nd cylinder

121S, 121T, form back pressure and import path 129S, 129T, these back pressures import path 129S, 129T deep and compressor housing 10 internal communication with the 1st, the 2nd blade groove 128S, 128T, and apply back pressure to the 1st, the 2nd blade 127S, 127T.

For refrigerant being drawn among the 1st, the 2nd suction chamber 131S, the 131T, in the 1st, the

2nd cylinder

121S, 121T, the 1st, the 2nd inlet hole 135S, the 135T that are connected with the 1st, the 2nd suction chamber 131S, 131T are being set.

And, as shown in figure 14, between the 1st cylinder 121S and the 2nd cylinder 121T, be provided with intermediate clapboard 140, mark off the 1st working space 130S of the 1st cylinder 121S and the 2nd working space 130T of the 2nd cylinder 121T.In the underpart of the 1st cylinder 121S, be provided with the 1st end plate 160S, it closes the 1st working space 130S of the 1st cylinder 121S.And, in the upper end portion of the 2nd cylinder 121T, being provided with the 2nd end plate 160T, it closes the 2nd working space 130T of the 2nd cylinder 121T.

On the 1st end plate 160S, form supplementary bearing parts 161S, the supplementary bearing supporting part 151 of running shaft 15 is being supported in rotation freely on supplementary bearing parts 161S.And, on the 2nd end plate 160T, forming main bearing parts 161T, the main bearing 153 of running shaft 15 is being supported in rotation freely on main bearing parts 161T.

Running shaft 15 possesses 180 ° the 1st eccentric part 152S and the 2nd eccentric part 152T of phase place off-centre that stagger each other, the 1st eccentric part 152S is keeping the 1st piston 125S of the 1st compression member 12S in freely mode of rotation, and the 2nd eccentric part 152T is to keep the 2nd piston 125T of the 2nd compression member 12T in rotation mode freely.

When running shaft 15 rotations, 1st, the

2nd piston

125S, 125T revolve round the sun along the 1st, the 2nd cylinder inner wall 123S, the 123T clockwise direction with Figure 15 in the 1st, the

2nd cylinder

121S, 121T, and the 1st, the 2nd blade 127S, 127T are along with the revolution of the 1st, the

2nd piston

125S, 125T moves back and forth.Motion by the 1st, the

2nd piston

125S, 125T and the 1st, the 2nd blade 127S, 127T, 1st, the volume of the 2nd suction chamber 131S, 131T and the 1st, the 2nd pressing chamber 133S, 133T changes continuously, and compression member 12 sucks refrigerant compression ejection then continuously.

As shown in figure 14,, the 1st silencer cover 170S is being set, between the 1st silencer cover 170S and the 1st end plate 160S, is forming the 1st 180S of anechoic chamber at the downside of the 1st end plate 160S.And the ejection parts of the 1st compression member 12S are to the 1st 180S of anechoic chamber opening.That is to say, near the 1st blade 127S of the 1st end plate 160S, be provided with the 1st pressing chamber 133S of the 1st cylinder 121S and the 1st spraying hole 190S of the 1st 180S of anechoic chamber connection,, be provided with the 1st ejection valve 200S that prevents compressed coolant backflow at the 1st spraying hole 190S place.

The 1st 180S of anechoic chamber is a chamber that connection circularizes, and it is the part with the communication paths of the ejection side of the 1st compression member 12S and compressor housing 10 internal communication.The 1st 180S of anechoic chamber can reduce the pressure pulsation of ejection refrigerant.

In addition, will reinstate rivet in order to the 1st ejection valve compactor 201S of the valve amount of opening that limits the 1st ejection valve 200S and the 1st ejection valve 200S one is fixed on the 1st ejection valve 200S.

As shown in figure 14,, be provided with the 2nd silencer cover 170T, between the 2nd silencer cover 170T and the 2nd end plate 160T, form the 2nd 180T of anechoic chamber at the upside of the 2nd end plate 160T.Near the 2nd blade 127T of the 2nd end plate 160T, be provided with the 2nd pressing chamber 133T of the 2nd cylinder 121T and the 2nd spraying hole 190T of the 2nd 180T of anechoic chamber connection, in the 2nd spraying hole 190T, be provided with the 2nd ejection valve 200T that prevents compressed coolant backflow.

In addition, for limiting the valve amount of opening of the 2nd ejection valve 200T,, the 2nd ejection valve compactor 201T and the 2nd ejection valve 200T one be fixed on the 2nd ejection valve 200T and being reinstated rivet.The 2nd 180T of anechoic chamber can reduce the pressure pulsation of ejection refrigerant.

The 1st cylinder 121S, the 1st end plate 160S, the 1st silencer cover 170S, the 2nd cylinder 121T, the 2nd end plate 160T, the 2nd silencer cover 170T and intermediate clapboard 140 are one by not shown bolton.In the compression member 12 that fastens as one by bolt, the peripheral part of the 2nd end plate 160T anchors on the compressor housing 10 by spot welding, thereby compression member 12 is fixed on the compressor housing 10.

As shown in figure 14, at the periphery wall of cylindrical shape compressor housing 10, begin from the bottom separatedly in the axial direction successively the 1st, the 2nd penetration hole 101,102 to be arranged on the roughly the same circumferential position.In addition, will remain on the lateral part of compressor housing 10 by the accumulator 25T that independently columnar seal container constituted by accumulator fixing frame 251 and accumulator locking hoop 253.

Top center at accumulator 25T, connecting the system's connecting tube 255 that is connected with the refrigeration cycle low voltage side, in the bottom penetration hole 257,257 that is arranged on accumulator 25 bottoms, connecting the 1st, the 2nd connecting

tube

31S, 31T, the end of this 1st, the 2nd connecting

tube

31S, 31T extends to till the inner and upper of accumulator 25T always, and the other end of the other end and the 1st, the 2nd suction pipe 104,105 is connected.

The low pressure refrigerant of refrigeration cycle is imported to the 1st, the 2nd connecting

tube

31S, 31T among the 1st, the 2nd compression member 12S, the 12T by accumulator 25, by the 1st, the 2nd penetration hole 101,102 and the 1st, the 2nd suction pipe 104,104 and be connected with the 1st, the 2nd inlet hole 135S, the 135T of the 1st, the 2nd cylinder 121S, 121T.That is to say that the 1st, the

2nd inlet hole

135S, 135T are communicated with side by side with the low voltage side of refrigeration cycle.

1st, the ejection of the 2nd compression member 12S, 12T part is connected with compressor housing 10 inside by the 1st, the 2nd 180S of anechoic chamber, 180T.That is to say, on the 1st, the

2nd end plate

160S, 160T, be provided with the 1st, the 2nd pressing chamber 133S, the 133T and the 1st of the 1st, the

2nd cylinder

121S, 121T, the 1st, the 2nd spraying hole 190S, the 190T that the 2nd 180S of anechoic chamber, 180T are communicated with, at the 1st, the

2nd spraying hole

190S, 190T place, be provided with the 1st, the 2nd ejection valve 200S, the 200T that prevent compressed coolant backflow.

Connecting spraying pipe 107 at the top of compressor housing 10, this spraying pipe 107 is connected with the high pressure side of refrigeration cycle, and the high pressure refrigerant is ejected into the high pressure side of refrigeration cycle.That is to say that the high pressure side of the 1st, the

2nd spraying hole

190S, 190T and refrigeration cycle is connected.

Enclosing lubricant oil in compressor housing 10 arrives till the height of about the 2nd cylinder 121T, lubricant oil circulates in compression member 12 by being installed in the not shown wing pump in running shaft 15 bottoms, the regional seal of the compression volume of the compression refrigerant that will be formed by the lubricated and micro-gap of sliding part.

At this, with the 1st, the 2nd auxiliary spraying hole 190SS, 190TT be arranged on along the 1st, the 2nd cylinder inner wall 123S, 123T on the revolution direction of the 1st, the

2nd piston

125S, 125T with the 1st, the 2nd blade groove 128S, 128T position at a distance of 230 °～300 °.Because two

cylinder

121S, 121T are arranged side by side, the pressure ratio that each cylinder is born is identical, thus the 1st, the 2nd auxiliary spraying hole 190SS, 190TT that the position is set is identical with embodiment 1.

In embodiment 3 rotary compressor 3, be that the 1st, the 2nd auxiliary spraying hole 190SS, 190TT is arranged on the 1st, the 2nd end plate 160S, the 160T of the 1st, the 2nd compression member 12S, 12T, but also can will assist spraying hole only to be arranged on wherein any end plate.

Below, the work of rotary compressor 3 discussed above is described.When rotary compressor 3 running, be separated into from the refrigerant that the low voltage side of refrigeration cycle flow in the accumulator 25T through system's connecting tube 255, liquid coolant is in the bottom of accumulator 25T, and gas coolant is on the top of accumulator 25T.

When the 1st, the

2nd piston

125S, 125T carry out revolution motion and when the volume of the 1st, the 2nd suction chamber 131S, 131T is enlarged in a clockwise direction in the 1st, the

2nd cylinder

121S, 121T, gas coolant in the accumulator 25T is through the 1st, the 2nd connecting

tube

31S, 31T, the 1st, the 2nd suction pipe 104,104 and the 1st, the

2nd inlet hole

135S, 135T and be inhaled in the 1st, the 2nd suction chamber 131S, the 131T of the 1st, the 2nd compression member 12S, 12T.1st, after the

2nd piston

125S, 125T public affairs turned around, the 1st, the 2nd suction chamber 131S, 131T and the 1st, the

2nd inlet hole

135S, 135T were blocked, and switch to the 1st, the 2nd pressing chamber 133S, 133T, and refrigerant is compressed.

When the compressed the 1st, the 2nd pressing chamber 133S, the pressure of the refrigerant in the 133T reaches to be positioned at and is arranged on the 1st, the

2nd spraying hole

190S, 190T and the 1st, the 2nd auxiliary spraying hole 190SS, the 1st of 190TT place, the 2nd ejection valve 200S, the 1st of 200T downstream side, the 2nd 180S of anechoic chamber, during the pressure of 180T, the 1st, the

2nd ejection valve

200S, 200T opens, refrigerant with less flow resistance through the 1st, the

2nd spraying hole

190S, 190T and the 1st, the 2nd auxiliary spraying hole 190SS, 190TT is ejected into the 1st, the 2nd 180S of anechoic chamber, among the 180T, the 1st, the 2nd 180S of anechoic chamber, after reduction causes the pressure pulsation of noise among the 180T, become the high pressure refrigerant and be ejected in the compressor housing 10.Then, the top that not shown core body otch or gap core body and coil between of high pressure refrigerant by the stator 111 of motor 11 is transported to motor 11 is ejected into the high pressure side of refrigeration cycle then through spraying pipe 107.

Because refrigerant is through the 1st, the

2nd spraying hole

190S, 190T and the 1st, the 2nd auxiliary spraying hole 190SS, 190TT and be ejected in the compressor housing 10, so can reduce the overcompression loss with less flow resistance.

(embodiment 4)

Figure 16 is embodiment 4 the compression member plan view of expression rotary compressor of the present invention, and Figure 17 is the plan view of the compression member of the embodiment's 1 of expression rotary compressor as a reference and in addition.As shown in figure 16, in embodiment 4 the rotary compressor, on the cylinder inner wall 123 be located at the corresponding position, position of the spraying hole 190 on the end plate 160A, be provided with the ejection groove 124 that is connected with spraying hole 190, and on cylinder inner wall 123 with corresponding position, the position of auxiliary spraying hole 190A, the ejection groove is not set.

If the rotary compressor of the embodiment 1 shown in the image pattern 17 is such, on cylinder inner wall 123, ejection groove 124A is set with corresponding position, the position of auxiliary spraying hole 190A, so when position by ejection groove 124A of the eccentric part of piston 125, bight that the refrigerant of compressed pressing chamber 133 can be by ejection groove 124A and the micro-gap between the piston 125 ooze and reveal in the suction chamber 131.

If rotary compressor as embodiment 4, make being centered close to of auxiliary spraying hole 190A than cylinder inner wall 123 position more in the inner part, and on cylinder inner wall 123, the ejection groove is not set with corresponding position, the position of auxiliary spraying hole 190A, just can reduce and ooze the refrigerant that reveals the suction chamber 131, the situation in the time of efficient being higher than be provided with ejection groove 124A from pressing chamber 133.

As mentioned above, rotary compressor of the present invention can use expeditiously for a long time.

Claims

1. rotary compressor comprises:

Compression member, it possesses:

Columnar cylinder;

Two end plates is used to seal the two ends of described cylinder;

Piston remains on the eccentric part by the running shaft of motoring rotation, revolve round the sun in cylinder along the cylinder inner wall of described cylinder, and and the cylinder inner wall of described cylinder between form working space; And

Blade is given prominence to and the described piston of butt in described working space in the blade groove of described cylinder, and this working space is divided into suction chamber and pressing chamber;

Compressor housing, it accommodates described compression member and airtight;

Inlet hole, it is arranged on the described cylinder, and described suction chamber is communicated with the low voltage side of refrigeration cycle;

Spraying hole, it is arranged on one of described end plate, and described pressing chamber is communicated with the high pressure side of refrigeration cycle; Described rotary compressor is characterised in that:

On one of described end plate, the auxiliary spraying hole except that described spraying hole is set.

2. rotary compressor comprises:

The low voltage side compression member, it possesses:

Columnar low voltage side cylinder;

The low voltage side end plate is used to seal an end of described low voltage side cylinder;

The low voltage side piston is kept by the low voltage side eccentric part of the running shaft that is rotated by motoring,

Low voltage side cylinder inner wall along described low voltage side cylinder revolves round the sun in this low voltage side cylinder, and and described low voltage side cylinder inner wall between form the low voltage side working space; And

The low voltage side blade; In the low voltage side blade groove of described low voltage side cylinder to described low voltage side work

Give prominence to and the described low voltage side piston of butt in the space, and this low voltage side working space is divided into low voltage side suction chamber and low voltage side pressing chamber;

The high pressure side compression member, on described low voltage side compression member, it possesses across the intermediate clapboard lamination:

Columnar high pressure side cylinder;

The high pressure side end plate is used to seal an end of described high pressure side cylinder;

The high pressure side cylinder is protected by the high pressure side eccentric part of the running shaft that is rotated by described motoring

Hold, in the cylinder of high pressure side, revolve round the sun along the high pressure side cylinder inner wall of described high pressure side cylinder, and with

Form the high pressure side working space between the cylinder inner wall of described high pressure side; And

The high pressure side blade is worked to described high pressure side in the high pressure side blade groove of described high pressure side cylinder

Give prominence to and the described high pressure side of butt piston in the space, and this high pressure side working space is divided into the high pressure side

Suction chamber and high pressure side pressing chamber;

Compressor housing, it accommodates described low voltage side compression member and high pressure side compression member and airtight;

The low voltage side inlet hole, it is arranged on the described low voltage side cylinder, and described low voltage side suction chamber is communicated with the low voltage side of refrigeration cycle;

The low voltage side spraying hole, it is arranged on the described low voltage side end plate, and described low voltage side pressing chamber is communicated with high pressure side inlet hole on being arranged on described high pressure side cylinder;

The high pressure side spraying hole, it is arranged on the end plate of described high pressure side, and described high pressure side pressing chamber is communicated with the high pressure side of refrigeration cycle; Described rotary compressor is characterised in that:

On described low voltage side end plate, the auxiliary spraying hole of low voltage side except that described low voltage side spraying hole is set.

3. rotary compressor according to claim 1 and 2 is characterized in that:

Described spraying hole and auxiliary spraying hole possess the ejection valve respectively,

On the described end plate, the recess of accommodating described ejection valve respectively is set dividually.

4. rotary compressor according to claim 1 and 2 is characterized in that:

Described spraying hole and auxiliary spraying hole possess the L shaped ejection valve that is one,

On the described end plate, be provided with to accommodate and describedly be the L shaped ejection valve of one and make this ejection valve have the recess of common standing part.

5. according to each described rotary compressor in the claim 1, it is characterized in that:

On the described cylinder inner wall be located at the corresponding position, position of the described spraying hole on the described end plate, the ejection groove that is connected with described spraying hole is set, and with the corresponding position, position that is located at the described auxiliary spraying hole on the described end plate ejection groove be not set on the described cylinder inner wall.