CN216080458U - Refrigerator convenient to change lubricating oil - Google Patents

Abstract

The utility model relates to the technical field of refrigerators, in particular to a refrigerator convenient for replacing lubricating oil; the lubricating oil discharging device does not need to be operated at the bottom of the equipment by an operator, so that the lubricating oil in the working cavity is conveniently discharged, the waiting time of the operator is shortened, and the working efficiency is improved; the refrigerator comprises a refrigerator body, wherein a scroll compressor is arranged on the refrigerator body, a working cavity is arranged in the scroll compressor, and an oil injection pipe and an oil discharge pipe are arranged on the scroll compressor; the oil-return type oil-gas separator is characterized by further comprising a tank body, a piston, a connecting column, a mounting frame, a threaded rod, an oil inlet pipe and an oil return pipe, wherein a cavity is formed in the tank body, the piston can be arranged in the cavity in a vertically sliding mode, the outer wall of the piston is in close contact with the inner wall of the cavity, a sealing piece is arranged between the connecting column and the tank body, a sealing cover is arranged at an opening of the connecting column, a waste oil pipe communicated with the bottom of the cavity is arranged at the bottom end of the tank body, a first switch valve is arranged on the waste oil pipe, and a second switch valve and a third switch valve are arranged on the oil inlet pipe and the oil return pipe respectively.

Description

Refrigerator convenient to change lubricating oil

Technical Field

The utility model relates to the technical field of refrigerators, in particular to a refrigerator convenient for replacing lubricating oil.

Background

As is known, a freezer is a device for cooling; the existing refrigerator comprises a refrigerator body, wherein a scroll compressor is arranged on the refrigerator body, a working cavity is arranged in the scroll compressor, and an oil filling pipe and an oil discharging pipe are arranged on the scroll compressor; when lubricating oil was changed to current refrigerator, operating personnel needed to operate bottom the equipment, and is comparatively inconvenient, because of lubricating oil viscosity is big, and it is long to the work intracavity lubricating oil unloading time, has prolonged operating personnel latency, has certain use limitation.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides the refrigerator which does not need an operator to operate at the bottom of the equipment, is convenient to discharge the lubricating oil in the working cavity, shortens the waiting time of the operator and improves the working efficiency and is convenient to replace the lubricating oil.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: the refrigerator comprises a refrigerator body, wherein a scroll compressor is arranged on the refrigerator body, a working cavity is arranged in the scroll compressor, and an oil injection pipe and an oil discharge pipe are arranged on the scroll compressor; the oil-saving tank comprises a tank body, a piston, a connecting post, a mounting frame, a threaded rod, an oil inlet pipe and an oil return pipe, wherein a cavity is arranged in the tank body, the piston can be arranged in the cavity in a vertically sliding manner, the outer wall of the piston is in close contact with the inner wall of the cavity, the bottom end of the connecting post penetrates through the top end wall of the tank body from the top end of the tank body and is fixedly connected with the top end of the piston, a sealing element is arranged between the connecting post and the tank body, the mounting frame is fixedly mounted at the top end of the tank body, the bottom end of the threaded rod penetrates through the mounting frame in a threaded manner of being screwed and is rotatably connected with the top end of the connecting post, a hand wheel is arranged at the top end of the threaded rod, an opening of the tank body and a tank body is arranged at the front part of the top end of the tank body, a sealing cover is arranged at the opening, a waste oil pipe communicated with the bottom of the cavity is arranged at the bottom end of the tank body, a first switch valve is arranged on the waste oil pipe, and the input end of the oil inlet pipe extends into the upper part in the cavity, the oil inlet pipe is characterized in that the output end of the oil inlet pipe is communicated with the input end of the oil injection pipe, the output end of the oil return pipe extends into the bottom of the cavity, the input end of the oil return pipe is communicated with the output end of the oil discharge pipe, and the oil inlet pipe and the oil return pipe are respectively provided with a second switch valve and a third switch valve.

Preferably, the number of the scroll compressors is two, the two sets of scroll compressors are mutually standby, and the two sets of scroll compressors are communicated with the inner cavity of the tank body through an oil inlet pipe and an oil return pipe.

Preferably, the front end of the tank body is provided with an observation window of the tank body in the cavity, and the observation window is provided with a transparent sealing plate with scale marks.

Preferably, an electromagnetic heating coil is spirally wound on the oil return pipe.

Preferably, the sealing member includes including the spiral cover, and the spiral cover middle part is provided with the cylindricality hole that runs through from top to bottom, is provided with the ring channel on the cylindricality downthehole wall, and the rubber circle is installed to embedded the installing of ring channel, the spliced pole is downthehole to pass from the cylindricality, rubber circle and spliced pole outer wall in close contact with.

Preferably, the refrigerator also comprises a connecting seat, the tank body is fixedly arranged on the connecting seat, and the connecting seat is fixedly connected with the refrigerator body.

(III) advantageous effects

Compared with the prior art, the utility model provides a refrigerator convenient for replacing lubricating oil, which has the following beneficial effects: when the lubricating oil is replaced, the first switch valve is opened, the hand wheel is rotated to enable the threaded rod to push the connecting column to move downwards, the piston moves downwards to the bottom of the cavity from the cavity, the first switch valve is closed, the second switch valve and the third switch valve are simultaneously opened, the hand wheel is rotated again to enable the threaded rod to drive the connecting column to move upwards, the piston moves upwards in the cavity, the upper pressure in the cavity is increased, negative pressure is formed at the bottom of the cavity, the upper part of the cavity is communicated with the upper part of the working cavity through the oil inlet pipe, the lower part of the cavity is communicated with the lower part of the working cavity through the oil return pipe, the upper pressure in the working cavity is increased, the lower pressure of the working cavity is reduced, the lubricating oil in the working cavity rapidly flows into the bottom of the cavity through the oil discharge pipe and the oil return pipe under the action of pressure difference, at the moment, the external discharge of the lubricating oil in the working cavity is completed, and the second switch valve and the third switch valve are closed, the first switch valve is opened, the hand wheel is rotated again, the piston is enabled to move downwards, waste lubricating oil at the bottom in the cavity is discharged from a waste oil pipe, when the piston moves to the bottom in the cavity, the waste lubricating oil is discharged completely from the cavity, the first switch valve is closed, the sealing cover is opened, new lubricating oil is injected into the cavity in the tank body from the opening, the sealing cover is screwed, the second switch valve and the third switch valve are opened, the hand wheel is rotated again, the piston moves upwards, new lubricating oil in the cavity is pressed into the working cavity through the oil inlet pipe and the oil injection pipe, under the action of pressure difference, the new lubricating oil can be injected into the working cavity in the scroll freezer smoothly and conveniently, operation of operators at the bottom of the device is not needed, the lubricating oil in the working cavity is convenient to discharge, the waiting time of the operators is shortened, and the working efficiency is improved.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;

in the drawings, the reference numbers: 1. a freezer body; 2. a scroll compressor; 3. an oil filling pipe; 4. an oil discharge pipe; 5. a tank body; 6. a piston; 7. connecting columns; 8. a mounting frame; 9. a threaded rod; 10. an oil inlet pipe; 11. an oil return pipe; 12. a seal member; 13. a hand wheel; 14. a sealing cover; 15. a first on-off valve; 16. a second on-off valve; 17. a third on-off valve; 18. an observation window; 19. an electromagnetic heating coil; 20. screwing a cover; 21. a rubber ring; 22. a connecting seat; 23. a waste oil pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the refrigerator convenient for replacing lubricating oil of the utility model comprises a refrigerator body 1, wherein a scroll compressor 2 is arranged on the refrigerator body 1, a working cavity is arranged in the scroll compressor 2, and an oil filling pipe 3 and an oil discharging pipe 4 are arranged on the scroll compressor 2; the oil-gas separation tank further comprises a tank body 5, a piston 6, a connecting column 7, an installation frame 8, a threaded rod 9, an oil inlet pipe 10 and an oil return pipe 11, wherein a cavity is arranged in the tank body 5, the piston 6 can be arranged in the cavity in a vertically sliding manner, the outer wall of the piston 6 is in close contact with the inner wall of the cavity, the bottom end of the connecting column 7 penetrates through the top end wall of the tank body 5 from the top end of the tank body 5 and is fixedly connected with the top end of the piston 6, a sealing element 12 is arranged between the connecting column 7 and the tank body 5, the installation frame 8 is fixedly arranged at the top end of the tank body 5, the bottom end of the threaded rod 9 is screwed and penetrates through the installation frame 8 and is rotatably connected with the top end of the connecting column 7, a hand wheel 13 is arranged at the top end of the threaded rod 9, an opening which is communicated with the cavity tank body is arranged at the front part of the top end of the tank body 5, a sealing cover 14 is arranged at the opening, a waste oil pipe 23 communicated with the bottom of the cavity is arranged at the bottom end of the tank body 5, and is provided with a first switch valve 15, the input end of an oil inlet pipe 10 extends into the upper part in the cavity, the output end of the oil inlet pipe 10 is communicated with the input end of the oil injection pipe 3, the output end of an oil return pipe 11 extends into the bottom in the cavity, the input end of the oil return pipe 11 is communicated with the output end of the oil discharge pipe 4, and a second switch valve 16 and a third switch valve 17 are respectively arranged on the oil inlet pipe 10 and the oil return pipe 11; when the lubricating oil is replaced, the first switch valve 15 is opened, the hand wheel 13 is rotated, the threaded rod 9 pushes the connecting column 7 to move downwards, the piston 6 moves downwards to the bottom of the cavity from the cavity, the first switch valve 15 is closed, the second switch valve 16 and the third switch valve 17 are simultaneously opened, the hand wheel 13 is rotated again, the threaded rod 9 drives the connecting column 7 to move upwards, the piston 6 in the cavity moves upwards, the upper pressure in the cavity is increased, negative pressure is formed at the bottom of the cavity, the upper part of the cavity is communicated with the upper part in the working cavity through the oil inlet pipe 10, the lower part of the cavity is communicated with the lower part in the working cavity through the oil return pipe 11, the upper pressure in the working cavity is increased, the lower pressure of the working cavity is reduced, the lubricating oil in the working cavity rapidly flows into the bottom of the cavity through the oil outlet pipe 4 and the oil return pipe 11 under the action of pressure difference, the external discharge of the lubricating oil in the working cavity is completed, and the second switch valve 16 and the third switch valve 17 are closed, the first switch valve 15 is opened, the hand wheel 13 is rotated again, the piston 6 moves downwards, the waste lubricating oil at the bottom in the cavity is discharged from the waste oil pipe 23, when the piston 6 moves to the bottom in the cavity and the waste lubricating oil is discharged from the cavity, the first switch valve 15 is closed, the sealing cover 14 is opened, the newly lubricated oil is injected into the cavity in the tank body 5 from the opening, the sealing cover 14 is screwed, the second switch valve 16 and the third switch valve 17 are opened, the hand wheel 13 is rotated again to enable the piston 6 to move upwards, so that the new lubricating oil in the cavity is pressed into the working cavity through the oil inlet pipe 10 and the oil injection pipe 3, under the pressure difference effect, new lubricating oil can be comparatively smooth and easy convenient be poured into the work intracavity in the vortex refrigerator, does not need operating personnel to operate bottom the equipment, is convenient for discharge the interior lubricating oil of work chamber, shortens operating personnel latency, improves work efficiency.

According to the refrigerator convenient for replacing lubricating oil, the two groups of scroll compressors 2 are arranged, the two groups of scroll compressors 2 are mutually standby, and the two groups of scroll compressors 2 are communicated with the inner cavity of the tank body 5 through the oil inlet pipe 10 and the oil return pipe 11; through the mutual standby arrangement of the scroll compressors 2, when the single scroll compressor 2 carries out lubricating oil replacement, the other scroll compressor 2 can normally run, and the normal running of the refrigerator body 1 is ensured; an observation window 18 is arranged at the front end of the tank body 5 and is communicated with the tank body in the cavity, and a transparent sealing plate with scale marks is arranged on the observation window 18; through the observation window 18, whether the oil quality of the lubricating oil in the cavity needs to be changed or not can be known, and meanwhile, the filling amount of the lubricating oil can be controlled through the scale mark line when the lubricating oil is changed; an electromagnetic heating coil 19 is spirally wound on the oil return pipe 11; in a low-temperature state, the viscosity of the lubricating oil is increased, and the lubricating oil flowing through the oil return pipe 11 can be heated by starting the electromagnetic heating coil 19, so that the viscosity of the lubricating oil is reduced, the fluidity of the lubricating oil is increased, and the lubricating oil in the working cavity is easier to discharge; the sealing element 12 comprises a screw cap 20, a cylindrical hole which penetrates through the screw cap 20 from top to bottom is formed in the middle of the screw cap 20, an annular groove is formed in the inner wall of the cylindrical hole, a rubber ring 21 is embedded in the annular groove, the connecting column 7 penetrates through the cylindrical hole, and the rubber ring 21 is in close contact with the outer wall of the connecting column 7; the rubber ring 21 is installed in an embedded mode, so that the outer wall of the connecting column 7 can be in full contact with the rubber ring 21, the deformation of the rubber ring 21 in the extrusion process is reduced, the sealing performance of the rubber ring is guaranteed, after the sealing element 12 is used for a long time, the sealing effect is reduced, the screw cap 20 can be detached, the sealing element 12 can be integrally replaced, and the operation is convenient and fast; the refrigerator also comprises a connecting seat 22, the tank body 5 is fixedly arranged on the connecting seat 22, and the connecting seat 22 is fixedly connected with the refrigerator body 1; through the setting of connecting seat 22, can make jar body 5 be connected with refrigerator body 1 integral type, be convenient for carry out bulk movement and installation with equipment, guaranteed jar stability of body 5 simultaneously.

When the lubricating oil replacing device is used, when lubricating oil is replaced, the first switch valve 15 is opened, the hand wheel 13 is rotated, the threaded rod 9 pushes the connecting column 7 to move downwards, the piston 6 moves downwards to the bottom of the cavity from the cavity, the first switch valve 15 is closed, the second switch valve 16 and the third switch valve 17 are opened at the same time, the hand wheel 13 is rotated again, the threaded rod 9 drives the connecting column 7 to move upwards, the piston 6 in the cavity moves upwards, the pressure of the upper part in the cavity is increased, negative pressure is formed at the bottom in the cavity, the upper part of the cavity is communicated with the upper part in the working cavity through the oil inlet pipe 10, the lower part of the cavity is communicated with the lower part in the working cavity through the oil return pipe 11, the pressure of the upper part in the working cavity is increased, the pressure of the lower part of the cavity is reduced, the lubricating oil in the working cavity rapidly flows into the bottom in the cavity through the oil discharge pipe 4 and the oil return pipe 11 under the action of pressure difference, and the external discharge of the lubricating oil in the working cavity is completed, the second switch valve 16 and the third switch valve 17 are closed, the first switch valve 15 is opened, the hand wheel 13 is rotated again, the piston 6 moves downwards, the waste lubricating oil at the bottom in the cavity is discharged from the waste oil pipe 23, when the piston 6 moves to the bottom in the cavity and the waste lubricating oil is discharged from the cavity, the first switch valve 15 is closed, the sealing cover 14 is opened, the new lubricating oil is injected into the cavity in the tank body 5 from the opening, the sealing cover 14 is screwed, the second switch valve 16 and the third switch valve 17 are opened, the hand wheel 13 is rotated again, the piston 6 moves upwards, so that the new lubricating oil in the cavity is pressed into the working cavity through the oil inlet pipe 10 and the oil injection pipe 3, under the action of pressure difference, the new lubricating oil can be injected into the working cavity in the scroll refrigerating machine smoothly without the operation of an operator at the bottom of the equipment, the lubricating oil in the working cavity is convenient to discharge, and the waiting time of the operator is shortened, the working efficiency is improved; through the mutual standby arrangement of the scroll compressors 2, when the single scroll compressor 2 carries out lubricating oil replacement, the other scroll compressor 2 can normally run, and the normal running of the refrigerator body 1 is ensured; through the observation window 18, whether the oil quality of the lubricating oil in the cavity needs to be changed or not can be known, and meanwhile, the filling amount of the lubricating oil can be controlled through the scale mark line when the lubricating oil is changed; in a low-temperature state, the viscosity of the lubricating oil is increased, and the lubricating oil flowing through the oil return pipe 11 can be heated by starting the electromagnetic heating coil 19, so that the viscosity of the lubricating oil is reduced, the fluidity of the lubricating oil is increased, and the lubricating oil in the working cavity is easier to discharge; the rubber ring 21 is installed in an embedded mode, so that the outer wall of the connecting column 7 can be in full contact with the rubber ring 21, the deformation of the rubber ring 21 in the extrusion process is reduced, the sealing performance of the rubber ring is guaranteed, after the sealing element 12 is used for a long time, the sealing effect is reduced, the screw cap 20 can be detached, the sealing element 12 can be integrally replaced, and the operation is convenient and fast; through the setting of connecting seat 22, can make jar body 5 be connected with refrigerator body 1 integral type, be convenient for carry out bulk movement and installation with equipment, guaranteed jar stability of body 5 simultaneously.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A refrigerator convenient for replacing lubricating oil comprises a refrigerator body (1), wherein a scroll compressor (2) is arranged on the refrigerator body (1), a working cavity is arranged in the scroll compressor (2), and an oil filling pipe (3) and an oil discharging pipe (4) are arranged on the scroll compressor (2); the oil-gas separation tank is characterized by further comprising a tank body (5), a piston (6), a connecting column (7), a mounting frame (8), a threaded rod (9), an oil inlet pipe (10) and an oil return pipe (11), wherein a cavity is formed in the tank body (5), the piston (6) is arranged in the cavity in a vertically sliding manner, the outer wall of the piston (6) is in close contact with the inner wall of the cavity, the bottom end of the connecting column (7) penetrates through the top end wall of the tank body (5) from the top end of the tank body (5) and is fixedly connected with the top end of the piston (6), a sealing element (12) is arranged between the connecting column (7) and the tank body (5), the mounting frame (8) is fixedly mounted at the top end of the tank body (5), the bottom end of the threaded rod (9) is screwed and penetrates through the mounting frame (8) and is rotatably connected with the top end of the connecting column (7), and a hand wheel (13) is arranged at the top end of the threaded rod (9), the utility model discloses a fuel injection pump, including jar body (5), opening part, the bottom of jar body (5) is provided with waste oil pipe (23) with cavity bottom intercommunication, is provided with first ooff valve (15) on waste oil pipe (23), the input of advancing oil pipe (10) stretches into upper portion in the cavity, advance the output of oil pipe (10) and the input intercommunication of annotating oil pipe (3), the output that returns oil pipe (11) stretches into the bottom in the cavity, the input that returns oil pipe (11) and the output intercommunication of arranging oil pipe (4), advance oil pipe (10) and return oil pipe (11) and be provided with second ooff valve (16) and third ooff valve (17) on respectively.

2. The refrigerator convenient for replacing lubricating oil according to claim 1, characterized in that the two sets of scroll compressors (2) are provided, the two sets of scroll compressors (2) are standby for each other, and the two sets of scroll compressors (2) are communicated with the inner cavity of the tank body (5) through an oil inlet pipe (10) and an oil return pipe (11).

3. The refrigerator convenient for replacing lubricating oil according to claim 2, characterized in that the front end of the tank body (5) is provided with an observation window (18) communicated with the tank body in the cavity, and a transparent sealing plate with scale marks is arranged on the observation window (18).

4. A refrigerator for facilitating the replacement of lubricating oil according to claim 3, characterized in that the oil return pipe (11) is helically wound with an electromagnetic heating coil (19).

5. The refrigerator convenient for replacing lubricating oil according to claim 4, characterized in that the sealing element (12) comprises a screw cap (20), a cylindrical hole which penetrates up and down is arranged in the middle of the screw cap (20), an annular groove is arranged on the inner wall of the cylindrical hole, a rubber ring (21) is embedded in the annular groove, the connecting column (7) penetrates through the cylindrical hole, and the rubber ring (21) is in close contact with the outer wall of the connecting column (7).

6. The refrigerator convenient for replacing lubricating oil according to claim 5, further comprising a connecting seat (22), wherein the tank (5) is fixedly mounted on the connecting seat (22), and the connecting seat (22) is fixedly connected with the refrigerator body (1).

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