CN110388770B - Refrigeration compression equipment capable of separating oil from gas - Google Patents

Abstract

The invention relates to the technical field of compressors, in particular to a refrigeration compression device capable of separating oil and gas, which comprises a compressor and an oil-gas separation device arranged on a gas outlet of the compressor, wherein the oil-gas separation device comprises a box body horizontally arranged, a gas inlet pipe arranged at one end of the box body, a gas outlet pipe arranged at the other end of the box body, separation frames arranged in the box body at intervals along the width direction of the box body, separation plates arranged in the separation frames at intervals along the length direction of the box body, and an oil return pipe arranged at the bottom of the box body, wherein one end of the oil return pipe, which is far away from the box body, is. The invention has the following effects: the refrigeration medium will pass through between the separator plate at the in-process of motion to make the fluid adhesion on the separator plate, and the refrigeration medium after the separation will finally get into the condenser through the outlet duct of the box other end, the fluid of constantly gathering on the separator plate will finally drip, and flow back to in the compressor through returning oil pipe, thereby improve the oil-gas separation effect.

Description

Refrigeration compression equipment capable of separating oil from gas

Technical Field

The invention relates to the technical field of compressors, in particular to refrigeration compression equipment capable of separating oil from gas.

Background

In the refrigeration system, oil and refrigerant are mixed together to lubricate and cool the compressor, and thus the oil and the refrigerant flow together into the compressor. Then, as the high-pressure refrigerant is discharged, some oil is discharged together with the refrigerant, continuously circulating through the condenser, the capillary tube, and the evaporator. As the amount of oil participating in the refrigerant cycle increases, the amount of refrigerant decreases, and the performance of the air conditioner decreases. When the discharged oil does not flow back to the compressor or the flow back time is too late, the compressor is lack of oil, and the compressor is in failure.

The patent of the invention in China with the publication number of CN103808090B discloses an oil separator, which is connected between a compressor and a condenser, and is of a single structure and comprises a cylinder body, an air inlet pipe, an air outlet pipe and an oil return pipe, wherein the air inlet pipe is connected with an exhaust pipe of the compressor, the air outlet pipe is connected with the condenser, the cylinder body is of a closed cylindrical shape, the air inlet pipe extends into the middle of the cylinder body, the air outlet pipe extends out of an upper cylinder body, and one end of the oil return pipe extends into the cylinder body from a lower cylinder body. The mixture enters from the middle part through the air inlet pipe, at the moment, the oil falls under the action of self weight, is accumulated at the bottom of the cylinder body and flows back through the oil return pipe, and the refrigerant is discharged through the air outlet pipe, so that the oil in the refrigerant is separated.

The above prior art solutions have the following drawbacks: if the compressor uses the oil separator, because the oil doped in the refrigerant is usually in the form of oil mist, and the diameter of oil liquid drops is small, when the oil is separated by the dead weight of the oil mist, some oil will be discharged together with the refrigerant, and the oil-gas separation effect is poor.

Disclosure of Invention

The invention aims to provide refrigeration and compression equipment capable of separating oil from gas, which can improve the oil-gas separation effect.

The technical purpose of the invention is realized by the following technical scheme: the utility model provides a but oil-gas separation's refrigeration compression equipment, includes the compressor, sets up the oil-gas separation device on the compressor gas outlet, oil-gas separation device includes the box that the level set up, sets up the intake pipe in box one end, sets up at the outlet duct of the box other end, set up the separation frame in the box along box width direction interval, set up the separation plate in the separation frame along box length direction interval to and set up the oil pipe that returns at the bottom half, return oil pipe keep away from the one end of box with the inside intercommunication of compressor.

Through adopting above-mentioned technical scheme, the refrigeration medium of carrying out from the compressor is the gaseous state, let in to the box through the intake pipe, move along box length direction, in-process refrigeration medium of motion will pass through between the separator plate, thereby make the fluid adhesion on the separator plate, and the refrigeration medium after the separation will finally get into to the condenser through the outlet duct of the box other end, the fluid of constantly gathering on the separator plate will finally drip, and flow back to the compressor in through returning oil pipe, thereby improve the oil-gas separation effect.

The invention is further provided with: a channel for a refrigerating medium to pass through is formed between every two adjacent separating frames, a plurality of splitter plates arranged at intervals are arranged in the channel and positioned between every two adjacent separating frames, and the splitter plates on the channels are arranged in a staggered mode.

Through adopting above-mentioned technical scheme, when refrigeration medium moves to the box in, will move in the passageway, the flow distribution plate makes the opening of adjacent passageway set up relatively, when refrigeration medium inflow, will flow into earlier in the passageway that the opening set up towards intake pipe one side, refrigeration medium when moving in the passageway, will flow to adjacent runner under the guide of separator plate in, refrigeration medium staggered flow back, finally flow out in the passageway that sets up towards outlet duct one side through the opening, this kind of passageway sets up the mode, can further increase the movement length of refrigeration medium between the separation frame, then make refrigeration medium will flow through the separator plate many times, and can reduce refrigeration medium's velocity of flow, improve the separation effect.

The invention is further provided with: the cross section of the separating plate is S-shaped formed by combining two semicircles, and the plane formed by the two side edges of the separating plate is vertical to the length direction of the box body.

By adopting the technical scheme, when the refrigeration medium moves to the position between the separation plates, the refrigeration medium can move along the side surfaces of the separation plates and move to the position of the separation plate recess, so that the contact time between the refrigeration medium and the separation plates is increased, and the possibility that the oil liquid is collected at the position of the separation plate recess is improved.

The invention is further provided with: the utility model discloses a separation frame, including separation frame, oil pipe, filter equipment, oil pipe, separation frame downside edge has seted up a plurality of oilhole down, a plurality of down the oilhole with the separation plate one-to-one, the box downside has the oil storage portion that is four prismatic table, the lower extreme of oil storage portion is provided with out oil pipe, be provided with in the play oil pipe and be used for the switching go out oil pipe's open and close structure, it still is provided with filter equipment to go out the oil pipe lower extreme, it.

Through adopting above-mentioned technical scheme, the fluid of agglutination on the separator plate will be under the action of gravity, move towards the oil storage portion of bottom half, and after falling through lower oilhole, will deposit in the oil storage portion, need get rid of the impurity that is mingled with in fluid through filter equipment before the retrieval and utilization, thereby reduce the impaired possibility of compressor, but just can be convenient for filter fluid when needing lubricating oil more, so fluid will store earlier in the liquid storage portion, pass through open-close structure when fluid volume is enough, make the oil pipe open, thereby make lubricating oil in the oil storage portion return to in the compressor through returning oil pipe behind filter equipment.

The invention is further provided with: the switching structure keeps away from the closing plate that oil storage portion was served including sliding the plunger of connection in the oil pipe, setting in an oil pipe, sets up oil outlet, the setting on the closing plate in the oil pipe and both ends set up the spring on closing plate and plunger to and set up the driving piece that just is used for ordering about plunger downstream in the oil storage portion, there is first runner along its length direction under the plunger on the terminal surface, on the plunger circumference lateral wall along its radially seted up with the second runner of first runner intercommunication.

Through adopting above-mentioned technical scheme, the driving piece orders about the plunger downstream after, the second runner mouth will be located the oil pipe, it will seal it to go out the oil pipe inner wall, thereby make lubricating oil store in the oil storage portion, and the spring is in compression deformation's state, when the driving piece is not acted on the plunger, the spring will order about the plunger to rise, the back is risen to the second runner this moment, with oil storage portion inner chamber intercommunication, lubricating oil will flow to the oil pipe in through the second runner, first runner, and flow to the oil pipe that returns through the oil outlet.

The invention is further provided with: the driving piece is including rotating the actuating lever of connection in the oil storage portion, setting on the actuating lever pole body and be used for contradicting at the cam of plunger upper end, setting at the rolling disc of actuating lever one end, the rotation axis perpendicular to plunger of actuating lever, the confession has been seted up to the plunger upper end the protruding department of cam inlays the constant head tank of establishing, just be provided with the observation window on the oil storage portion lateral wall.

Through adopting above-mentioned technical scheme, the accessible observation window looks over the lubricated oil mass that persists in the oil storage portion, thereby according to whether reaching the filtration requirement and opening the open-close structure, can order about the actuating lever through the rolling disc and rotate, the cam after the rotation will take place to rotate, its protrusion one side will contradict on the plunger to order about the plunger along the length direction downstream of producing oil pipe, then realize closing the purpose of producing oil pipe, the protruding department of cam will imbed in the constant head tank this moment.

The invention is further provided with: the filter device comprises a liquid inlet cylinder communicated with the oil outlet pipe, a liquid outlet pipe arranged on one side of the liquid inlet cylinder, and a filter ring which is sleeved on the liquid outlet pipe and communicated with the liquid inlet cylinder, wherein the filter ring is of a hollow structure, an inner ring of the filter ring is communicated with the liquid outlet pipe, a filter element used for filtering oil is arranged in the filter ring, and the oil return pipe is arranged at one end of the liquid outlet pipe far away from the liquid inlet cylinder.

Through adopting above-mentioned technical scheme, the lubricating oil that flows enters into to the feed liquor section of thick bamboo through an oil pipe, fluid flows to in the filter ring after dividing liquid in the feed liquor section of thick bamboo, filter fluid through the filter core, make impurity retained in the filter core, and the fluid after being filtered will flow to the drain pipe from filtering the ring inner circle, thereby make the fluid after being filtered flow back to the compressor through returning oil pipe, because impurity is carried out the filtering by the filter core, thereby reduce the lubricating oil of backward flow and cause the possibility of damage to the compressor.

The invention is further provided with: the drain pipe upper end is provided with the protrusion the linkage segment of filter ring upper surface, one side that an oil pipe was kept away from to the feed liquor section of thick bamboo inwards caves in and forms the confession the spread groove of linkage segment embedding, the linkage segment outer wall with spread groove inner wall threaded connection, a plurality of feed liquor hole has been seted up along circumference on one side that an oil pipe was kept away from to the feed liquor section of thick bamboo, it is the opening setting to filter one side that the ring is close to a feed liquor section of thick bamboo, the filter core can be dismantled the connection and be in the filter ring.

Through adopting above-mentioned technical scheme, after filtering many times, can twist into a liquid section of thick bamboo for linkage segment and spread groove inner wall rotate relatively, thereby make into a liquid section of thick bamboo and separate from with filtering the ring, and can take out the filter core from filtering the intra-annular, clear up or change it, thereby can guarantee better filtering effect.

The invention is further provided with: thereby the spread groove bottom to it forms water conservancy diversion portion in the feed liquor section of thick bamboo to go into the interior caving in of liquid section of thick bamboo, water conservancy diversion portion is hemispherical.

Through adopting above-mentioned technical scheme, when fluid just flowed into to the feed liquor section of thick bamboo in, will flow to the water conservancy diversion portion on, be hemispherical water conservancy diversion portion can guide fluid better towards the feed liquor section of thick bamboo and flow all around, fluid can be comparatively even must flow to the filtration intra-annular through the feed liquor hole to improve the filter effect.

The invention is further provided with: one side that advances the liquid section of thick bamboo and keep away from the oil pipe just is located its outer lane border and is provided with the sealing ring, set up the confession on the sealing ring filter the seal groove of ring lateral wall border embedding, be provided with the seal ring in the seal groove.

Through adopting above-mentioned technical scheme, when a liquid inlet cylinder is connected with the filter ring, the sealing ring will be embedded into the seal groove, and when fluid flowed to the filter ring through the feed liquor hole this moment, the sealing ring can play the sealed effect to fluid, reduces excessive possibility.

In conclusion, the beneficial technical effects of the invention are as follows:

1. in the moving process, a refrigeration medium passes through the separation plates, so that oil is adhered to the separation plates, the separated refrigeration medium finally enters the condenser through the air outlet pipe at the other end of the box body, the oil continuously gathered on the separation plates finally drips and flows back into the compressor through the oil return pipe, and the oil-gas separation effect is improved;

2. when the refrigeration medium moves in the channel, the refrigeration medium flows into the adjacent flow channel under the guidance of the separation plate, and finally flows out of the channel arranged towards one side of the air outlet pipe through the opening after the refrigeration medium flows in a staggered manner;

3. fluid will be stored earlier in the stock solution portion, through the open-close structure when the fluid volume is enough for the oil outlet pipe is opened, thereby makes lubricating oil in the oil storage portion return to the compressor through returning the oil pipe behind filter equipment.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of the case for illustrating the internal structure;

FIG. 3 is a schematic view of the structure of the separation plate;

FIG. 4 is a schematic structural diagram of a separating frame with a box body hidden;

FIG. 5 is an enlarged view of portion A of FIG. 4, showing the lower oil hole;

FIG. 6 is a schematic view of a partial structure of the present invention;

fig. 7 is a partial sectional view of the oil reservoir for showing an opening and closing structure;

FIG. 8 is a cross-sectional view of the plunger;

fig. 9 is a partial cross-sectional view of a feed cylinder to show internal structure;

FIG. 10 is an enlarged view of portion B of FIG. 9, showing the sealant ring;

fig. 11 is a partial exploded view of the filter ring to show the attachment holes.

Reference numerals: 100. a compressor; 110. an oil-gas separation device; 111. a box body; 112. an air inlet pipe; 113. an air outlet pipe; 114. separating the frame; 115. a separation plate; 116. an oil return pipe; 120. a channel; 121. a flow distribution plate; 130. a lower oil hole; 140. an oil storage section; 141. an observation window; 142. an oil outlet pipe; 150. an opening and closing structure; 151. a plunger; 152. a closing plate; 153. an oil outlet hole; 154. a spring; 155. a first flow passage; 156. a second flow passage; 160. a drive member; 161. a drive rod; 162. a cam; 163. rotating the disc; 164. a bump; 165. positioning a groove; 200. a liquid inlet cylinder; 220. connecting grooves; 221. a flow guide part; 230. a liquid inlet hole; 240. a seal ring; 241. a sealing groove; 242. sealing the rubber ring; 300. a liquid outlet pipe; 310. a connecting section; 400. a filter ring; 410. a filter element; 420. and connecting the holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The refrigeration compression equipment capable of oil-gas separation, referring to fig. 1 and 2, comprises a compressor 100 and an oil-gas separation device 110 arranged on an air outlet of the compressor 100, wherein the oil-gas separation device 110 comprises a box body 111, an air inlet pipe 112, an air outlet pipe 113, a separation frame 114, a separation plate 115 and an oil return pipe 116. The box body 111 is horizontally arranged, the air inlet pipe 112 and the air outlet pipe 113 are respectively arranged at two ends of the box body 111, the separation frame 114 is arranged in the box body 111 at intervals along the width direction of the box body 111, and the separation frame 114 is fixed on the inner wall of the box body 111 through bolts. And the separation plate 115 is arranged in the separation frame 114 at intervals along the length direction of the tank 111, while the oil return pipe 116 is arranged at the bottom of the tank 111, and one end of the oil return pipe 116 far away from the tank 111 is communicated with the inside of the compressor 100.

Referring to fig. 2, 3 and 4, the cross section of the separating plate 115 is S-shaped formed by combining two semicircles, and the plane formed by the two sides of the separating plate 115 is perpendicular to the length direction of the box 111. Both ends of the separation plate 115 are welded to both sides of the separation frame 114, respectively. A channel 120 for a refrigerant to pass through is formed between two adjacent separating frames 114, a plurality of flow distribution plates 121 are welded in the channel 120 and between the two separating frames 114, the flow distribution plates 121 are uniformly arranged at intervals along the length direction of the box body 111, and the flow distribution plates 121 on the two adjacent channels 120 are arranged in a staggered manner.

Referring to fig. 1, 4 and 5, a plurality of oil holes 130 are formed in the lower side edge of the separating frame 114, the oil holes 130 correspond to the separating plate 115 one by one, an oil storage portion 140 having a quadrangular frustum shape is formed in the lower side of the box body 111, and an observation window 141 is installed on the side wall of the oil storage portion 140. The oil outlet pipe 142 is installed at the lowest end of the oil storage part 140, an opening and closing structure 150 for opening and closing the oil outlet pipe 142 is provided in the oil outlet pipe 142, a filtering device is further provided at the lower end of the oil outlet pipe 142, and the oil return pipe 116 is connected to the filtering device. The oil condensed on the separation plate 115 will move toward the oil storage portion 140 at the bottom of the case 111 under the action of gravity and will be stored in the oil storage portion 140 after falling through the lower oil hole 130, and the oil outlet pipe 142 is opened through the opening and closing structure 150 when the oil amount is sufficient, so that the lubricating oil in the oil storage portion 140 passes through the filtering device and then returns to the compressor 100 through the oil return pipe 116.

Referring to fig. 6, 7 and 8, the opening and closing structure 150 includes a plunger 151, a closing plate 152, an oil outlet 153, a spring 154 and a driving member 160 for driving the plunger 151 to move downward, the plunger 151 is slidably connected in the oil outlet pipe 142, a first flow channel 155 is formed on the lower end surface of the plunger 151 along the length direction thereof, and a second flow channel 156 communicated with the first flow channel 155 is formed on the circumferential side wall of the plunger 151 along the radial direction thereof. The closing plate 152 is integrally provided on an end of the oil outlet pipe 142 remote from the oil reservoir 140, the oil outlet hole 153 is formed in the closing plate 152 and faces the first flow channel 155, and the spring 154 is provided in the oil outlet pipe 142 and has both ends bonded to the closing plate 152 and the plunger 151, respectively.

Referring to fig. 7 and 8, the driving member 160 includes a driving rod 161, a cam 162, and a rotating disc 163, wherein the side wall of the oil storage portion 140 is symmetrically provided with a protrusion 164 integrally, the driving rod 161 is disposed in the oil storage portion 140, two ends of the driving rod 161 are rotatably connected to the two protrusions 164, respectively, and a rotation axis of the driving rod 161 is perpendicular to the plunger 151. The cam 162 is integrally provided on the shaft of the driving rod 161, and the plunger 151 has a positioning groove 165 formed on the upper end surface thereof for the protrusion of the cam 162 to be inserted into, and a rotary disk 163 is mounted on one end of the driving rod 161. When the driving lever 161 is rotated by the rotating disk 163, the protrusion of the cam 162 is engaged in the positioning groove 165, and the plunger 151 is located in the oil outlet pipe 142, and the second flow passage 156 is blocked by the inner wall of the oil outlet pipe 142. When the lubricant needs to be discharged, the rotating disc 163 rotates due to loosening, and when the protrusion of the cam 162 does not abut against the plunger 151, the spring 154 will drive the plunger 151 to ascend, and at this time, the second flow channel 156 ascends and then communicates with the inner cavity of the oil storage portion 140, and the lubricant will flow into the oil outlet pipe 142 through the second flow channel 156 and the first flow channel 155, and flow into the filter device through the oil outlet hole 153.

Referring to fig. 1 and 9, the filtering apparatus includes a liquid inlet cylinder 200 communicated with the oil outlet pipe 142, a liquid outlet pipe 300 disposed at one side of the liquid inlet cylinder 200, and a filtering ring 400 sleeved on the liquid outlet pipe 300 and communicated with the liquid inlet cylinder 200. The filtering ring 400 is of a hollow structure, the inner ring of the filtering ring is communicated with the liquid outlet pipe 300, and a filter element 410 for filtering oil is embedded in the filtering ring 400. The oil liquid flows into the liquid inlet cylinder 200 through the oil outlet pipe 142, is shunted into the filter ring 400 through the liquid inlet cylinder 200, is filtered by the filter element 410, is discharged through the liquid outlet pipe 300, and flows back into the compressor 100.

Referring to fig. 6 and 9, the outer wall of the liquid outlet pipe 300 is welded on the inner wall of the filter ring 400, the upper end of the liquid outlet pipe 300 is integrally provided with a connecting section 310 protruding out of the upper surface of the filter ring 400, one side of the liquid inlet cylinder 200 away from the oil outlet pipe 142 is inwardly recessed to form a connecting groove 220 for the connecting section 310 to be embedded in, and the outer wall of the connecting section 310 is in threaded connection with the inner wall of the connecting groove 220. And the bottom of the connecting groove 220 is recessed into the liquid inlet cylinder 200, so that a flow guide part 221 is formed in the liquid inlet cylinder 200, and the flow guide part 221 is hemispherical.

Referring to fig. 9, 10 and 11, a plurality of liquid inlet holes 230 are circumferentially formed on one side of the liquid inlet cylinder 200 away from the oil outlet pipe 142, and an opening is formed on one side of the filter ring 400 close to the liquid inlet cylinder 200. The liquid inlet cylinder 200 is away from one side of the oil outlet pipe 142 and is integrally provided with a sealing ring 240 on the edge of the outer ring thereof, the sealing ring 240 is provided with a sealing groove 241 for embedding the edge of the outer side wall of the filter ring 400, and a sealing rubber ring 242 is bonded in the sealing groove 241. Meanwhile, the inner wall of the filter ring 400 is provided with a connecting hole 420 penetrating through the side wall of the liquid outlet pipe 300, and the oil flows into the liquid outlet pipe 300 from the connecting hole 420.

The implementation principle of the embodiment is as follows: the refrigerant delivered from the compressor 100 is in a gaseous state, is introduced into the tank 111 through the inlet pipe 112, moves along the length direction of the tank 111, and passes through the separation plates 115 in the moving process, so that the oil adheres to the separation plates 115, and the separated refrigerant finally enters the condenser through the outlet pipe 113 at the other end of the tank 111.

The oil is constantly gathered after being collected by the sunken of separator plate 115, and finally drip through lower oilhole 130 under self action of gravity, the oil after dripping will be stored in oil storage portion 140, operating personnel observes oil through observation window 141 and accessible observation window 141 looks over the amount of lubricating oil that remains in oil storage portion 140, open and close structure 150 is opened according to whether reaching the filtration requirement, it makes cam 162 no longer contradict in plunger 151 upper end to rotate actuating lever 161, spring 154 orders about plunger 151 upward movement, make oil loop through second runner 156 this moment, first runner 155, thereby flow to into liquid inlet cylinder 200 through outlet pipe 142.

Fluid meets guide portion 221 in feed cylinder 200 and then divides the liquid, flows comparatively evenly to filtering in the ring 400, filters fluid through filter core 410 for impurity is retained in filter core 410, and the fluid after being filtered will flow to drain pipe 300 from filtering ring 400 inner circle, thereby makes the fluid after being filtered flow back to compressor 100 through returning oil pipe 116 in, thereby reduces the lubricating oil that flows back and causes the possibility of damaging compressor 100.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (7)

1. The utility model provides a but oil-gas separation's refrigeration compression equipment, includes compressor (100), sets up oil-gas separation device (110) on compressor (100) gas outlet, its characterized in that: the oil-gas separation device (110) comprises a box body (111) which is horizontally arranged, an air inlet pipe (112) arranged at one end of the box body (111), an air outlet pipe (113) arranged at the other end of the box body (111), separation frames (114) which are arranged in the box body (111) at intervals along the width direction of the box body (111), separation plates (115) which are arranged in the separation frames (114) at intervals along the length direction of the box body (111), and an oil return pipe (116) arranged at the bottom of the box body (111), wherein one end, far away from the box body (111), of the oil return pipe (116) is communicated with the interior of the compressor (100);

a plurality of lower oil holes (130) are formed in the lower side edge of the separating frame (114), the lower oil holes (130) correspond to the separating plate (115) one by one, an oil storage part (140) in a quadrangular frustum is arranged on the lower side of the box body (111), an oil outlet pipe (142) is arranged at the lowest end of the oil storage part (140), an opening and closing structure (150) for opening and closing the oil outlet pipe (142) is arranged in the oil outlet pipe (142), a filtering device is further arranged at the lower end of the oil outlet pipe (142), and the oil return pipe (116) is connected with the filtering device;

the filtering device comprises a liquid inlet cylinder (200) communicated with the oil outlet pipe (142), a liquid outlet pipe (300) arranged on one side of the liquid inlet cylinder (200), and a filtering ring (400) sleeved on the liquid outlet pipe (300) and communicated with the liquid inlet cylinder (200), wherein the filtering ring (400) is of a hollow structure, the inner ring of the filtering ring is communicated with the liquid outlet pipe (300), a filter element (410) for filtering oil is arranged in the filtering ring (400), and the oil return pipe (116) is arranged at one end of the liquid outlet pipe (300) far away from the liquid inlet cylinder (200);

the drain pipe (300) upper end is provided with the protrusion connection section (310) of filter ring (400) upper surface, one side that advances a liquid section of thick bamboo (200) and keep away from oil pipe (142) inwards caves in and forms the confession connection groove (220) of connection section (310) embedding, connection section (310) outer wall with connection groove (220) inner wall threaded connection, advance a liquid section of thick bamboo (200) and keep away from on one side of oil pipe (142) and seted up a plurality of feed liquor hole (230) along circumference, one side that filter ring (400) are close to into a liquid section of thick bamboo (200) sets up for the opening, filter core (410) can be dismantled the connection and be in filter ring (400).

2. An oil-gas separable refrigeration compression device as claimed in claim 1, wherein: a channel (120) for a refrigerating medium to pass through is formed between every two adjacent separating frames (114), a plurality of flow distribution plates (121) arranged at intervals are arranged in the channel (120) and between the two separating frames (114), and the flow distribution plates (121) on the two adjacent channels (120) are arranged in a staggered mode.

3. An oil-gas separable refrigeration compression apparatus as claimed in claim 2, wherein: the cross section of the separating plate (115) is S-shaped formed by combining two semicircles, and the plane formed by the two side edges of the separating plate (115) is vertical to the length direction of the box body (111).

4. An oil-gas separable refrigeration compression device as claimed in claim 3, wherein: opening and closing structure (150) including sliding plunger (151) of connecting in oil pipe (142), set up and keep away from closing plate (152) that oil storage portion (140) one was served in oil pipe (142), set up oil outlet (153) on closing plate (152), set up in oil pipe (142) and both ends set up spring (154) on closing plate (152) and plunger (151) to and set up on oil storage portion (140) and be used for driving piece (160) of plunger (151) downstream, there is first runner (155) along its length direction on the terminal surface under plunger (151), radially seted up along it on plunger (151) circumference lateral wall with second runner (156) of first runner (155) intercommunication.

5. An oil-gas separable refrigeration compression device as claimed in claim 4, wherein: drive piece (160) including rotate drive lever (161) of connection on oil storage portion (140), set up in drive lever (161) pole body and be used for contradicting cam (162) in plunger (151) upper end, set up rolling disc (163) in drive lever (161) one end, the axis of rotation perpendicular to plunger (151) of drive lever (161), the confession has been seted up to plunger (151) upper end the protruding department of cam (162) inlays constant head tank (165) of establishing, just be provided with observation window (141) on oil storage portion (140) lateral wall.

6. An oil-gas separable refrigeration compression device as claimed in claim 5, wherein: the bottom of the connecting groove (220) is sunken into the liquid inlet cylinder (200) so as to form a flow guide part (221) in the liquid inlet cylinder (200), and the flow guide part (221) is hemispherical.

7. An oil-gas separable refrigeration compression device as claimed in claim 6, wherein: one side of going away from oil outlet pipe (142) and being located its outer lane border in liquid inlet cylinder (200) is provided with sealing ring (240), offer the confession on sealing ring (240) seal groove (241) of filter ring (400) lateral wall border embedding, be provided with in seal groove (241) and seal gluey ring (242).

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