CN111043009A - Compressor assembly, refrigerator and control method - Google Patents
Compressor assembly, refrigerator and control method Download PDFInfo
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- CN111043009A CN111043009A CN201911182431.3A CN201911182431A CN111043009A CN 111043009 A CN111043009 A CN 111043009A CN 201911182431 A CN201911182431 A CN 201911182431A CN 111043009 A CN111043009 A CN 111043009A
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- compressor assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
- F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0207—Lubrication with lubrication control systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a compressor assembly, a refrigerator and a control method, wherein the compressor assembly comprises: a compressor housing (100) in which a cylinder (200) having an exhaust port is provided inside the compressor housing (100); the silencing structure (300) is arranged outside the compressor shell (100), and the silencing structure (300) is communicated with an exhaust port of the cylinder (200) through an exhaust pipe (1) so as to guide exhaust in the cylinder (200) to the silencing structure (300). Compared with the form of the noise reduction structure arranged in the shell of the existing compressor, the invention effectively avoids the situation that the temperature in the shell is increased due to the heat release of high-temperature and high-pressure exhaust in the shell, and solves the problem of serious overheating of the compressor; the problem of poor silencing effect caused by the limited inner space of the shell of the exhaust silencer of the piston compressor can be solved; still effectively carry out the oil return effect through the pipe that returns that sets up in sound-deadening structure bottom, in time return oil to the casing.
Description
Technical Field
The invention belongs to the technical field of compressors, and particularly relates to a compressor assembly, a refrigerator and a control method.
Background
Due to the structural characteristics of the totally-enclosed piston compressor, the pump body assembly and the motor are enclosed in the shell, high-temperature and high-pressure exhaust is subjected to noise reduction and heat release in the shell through the exhaust silencer, so that the temperature in the shell is rapidly increased, and the suction overheating and the overhigh temperature of the motor are directly influenced; meanwhile, the exhaust silencer is limited by the limited space position in the shell, the actual silencing effect is limited, the comprehensive performance of the compressor is reduced, and the performance of the totally-enclosed piston compressor is limited to a great extent. In addition, because the totally-enclosed compressor is limited to discharge capacity and space, an oil-gas separator and an oil return structure are not usually arranged, but the problem that the oil quantity of exhaust gas is large is increasingly obvious along with the continuous increase of the rotating speed of the piston compressor, the performance of the piston compressor is seriously influenced, even the oil return of the compressor is not timely, the oil liquid level is low, and the running power consumption of the compressor is abnormal or the compressor is locked and stopped due to the fact that lubricating oil is insufficient.
Patent No. CN 207740133U discloses a reciprocating compressor and its exhaust assembly, wherein the silencing cavity of the exhaust assembly and the crankcase of the compression mechanism are integrally cast, the exhaust mainly transfers heat by heat conduction or convection, resulting in high-temperature exhaust in the shell still being unfavorable for suction overheating and high temperature of the motor; although the compressor is equipped with two exhaust mufflers, the muffling and noise-reducing capabilities are limited; meanwhile, oil-gas separation cannot be realized, oil returns to the compressor in time, and the problems of timeliness of compressor lubrication and high exhaust and oil discharge rate cannot be solved.
The compressor in the prior art has the problems that after the high-temperature and high-pressure superheated refrigerant vapor is compressed, the environment temperature in the shell is rapidly increased due to heat release of the superheated refrigerant vapor, so that the compressor is seriously overheated and the like; the exhaust silencer of the piston compressor is limited in the inner space of the shell, so that the practical exhaust silencing effect is poor, and the airflow noise and vibration are large; the invention discloses a compressor assembly, a refrigerator and a control method, and aims to solve the technical problems that when a compressor exhausts air, a refrigerant carries part of lubricating oil, the lubricating oil cannot be separated in time, and the lubricating oil returns to the interior of the compressor untimely, so that the lubricating oil required by the operation of the compressor is insufficient, and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the compressor in the prior art has the problems that the compressor is seriously overheated due to the rapid increase of the environment temperature in the shell caused by the heat release of the superheated refrigerant vapor with high temperature and high pressure after the compression is finished, and the like, so as to provide a compressor assembly, a refrigerator and a control method.
The present invention provides a compressor assembly comprising:
a compressor housing having a cylinder disposed therein, the cylinder having an exhaust port;
the silencing structure is arranged outside the compressor shell and communicated with an exhaust port of the cylinder through an exhaust pipe so as to guide exhaust in the cylinder to the silencing structure.
Preferably, the first and second electrodes are formed of a metal,
the bottom of the silencing structure is provided with an oil return pipe, one end of the oil return pipe is communicated with the inside of the silencing structure, and the other end of the oil return pipe is communicated with the inside of the compressor shell.
Preferably, the first and second electrodes are formed of a metal,
the silencing structure comprises a first silencing container and a first silencing cavity, and the exhaust pipe is communicated with the first silencing cavity inside the first silencing container.
Preferably, the first and second electrodes are formed of a metal,
the top of the first silencing container is provided with a first outlet, and/or the bottom of the first silencing container is provided with an oil discharge hole, and/or the first silencing container is of a spherical structure.
Preferably, the first and second electrodes are formed of a metal,
and a turbulent flow structure is also arranged in the first silencing container.
Preferably, the first and second electrodes are formed of a metal,
the flow disturbing structure comprises a plate-shaped structure, the plate surface of the plate-shaped structure is opposite to the flowing direction of the air flow in the exhaust pipe, and at least one air gap channel allowing the air flow to flow through is arranged on the plate-shaped structure.
Preferably, the first and second electrodes are formed of a metal,
the plate-shaped structure is a circular plate, the air gap channel is a multi-section bent baffling channel, and the baffling channel extends outwards in the radial direction from the circle center of the circular plate.
Preferably, the first and second electrodes are formed of a metal,
the number of the deflection channels is multiple, and the deflection channels radially extend outwards from the circle center of the circular plate.
Preferably, the first and second electrodes are formed of a metal,
the plate-like structure is a circular plate, and the air gap channel is a plurality of hole structures arranged on the circular plate.
Preferably, the first and second electrodes are formed of a metal,
the hole structure is a circular hole or a triangular hole.
Preferably, the first and second electrodes are formed of a metal,
the amortization structure includes second amortization container, second amortization container cover is established the outside of first amortization container, first amortization container the exhaust of first export with second amortization container intercommunication, the oil drain hole with second amortization container intercommunication, just second amortization container bottom is provided with oil return channel.
Preferably, the first and second electrodes are formed of a metal,
be provided with the control valve in the oil return passageway the corresponding high position of oil return passageway still is provided with signal detection device, signal detection device can detect oil level height in the oil return passageway, compressor unit still include with the signal processor that signal detection device electricity is connected, signal processor still with the control valve electricity is connected.
Preferably, the first and second electrodes are formed of a metal,
the signal detection device comprises an optical signal transmitting end and an optical signal receiving end.
Preferably, the first and second electrodes are formed of a metal,
the silencing structure further comprises a third silencing container, the third silencing container is arranged at the upper end of the second silencing container and communicated with the inside of the second silencing container, and an exhaust port is formed in the top of the third silencing container.
Preferably, the first and second electrodes are formed of a metal,
the joint of the second sound-deadening container and the third sound-deadening container is formed as a constriction capable of allowing the passage of the gas flow.
The invention also provides a refrigerator comprising the compressor assembly of any one of the preceding claims.
The invention also provides a control method of the compressor assembly, which uses the compressor assembly as described in any one of the above items to control the oil return of the silencing structure according to the height of the oil level in the silencing structure.
Preferably, the first and second electrodes are formed of a metal,
when including noise cancelling structure includes oil return passage, control valve, signal detection device and signal processor:
when the signal detection device detects that the oil level in the oil return channel is higher than a first preset height, the signal processor controls the control valve to be opened so as to return oil from the oil return channel;
when the signal detection device detects that the oil level in the oil return passage is lower than a second preset height, the signal processor controls the control valve to close, so that the oil return passage closes oil return.
The compressor assembly, the refrigerator and the control method provided by the invention have the following beneficial effects:
according to the invention, the silencing structure is arranged outside the compressor shell, and the exhaust of the exhaust port of the air cylinder is communicated to the silencing structure outside the shell through the exhaust pipe, so that compared with the mode that the silencing structure is arranged inside the compressor shell in the prior art, the condition that the temperature in the shell is increased due to the heat release of high-temperature and high-pressure exhaust in the shell can be effectively avoided, and the problem that the compressor is seriously overheated is effectively solved; the silencing structure is arranged outside the shell of the compressor, so that the problem of poor silencing effect caused by the limited inner space of the shell of the exhaust silencer of the piston compressor can be effectively solved, and the volume of the silencing structure can be increased as required, so that the silencing effect is effectively improved; the silencing effect can be further improved, the airflow noise is reduced, and the vibration is reduced through the arrangement of the silencing cavities; the oil return pipe arranged at the bottom of the silencing structure can effectively return oil to the compressor, and the oil return effect can be further enhanced by arranging the plurality of cavities and the turbulence structure.
Drawings
FIG. 1 is a schematic view of the internal structure of a fully enclosed piston of the prior art;
FIG. 2 is an installation diagram (front view) of the external three-stage exhaust silencing structure of the present invention;
FIG. 3 is an installation diagram (top view) of the external three-stage exhaust silencing structure of the present invention;
FIG. 4 is an internal structural view of the external three-stage exhaust muffler of the present invention;
FIG. 5 is a block diagram of a first embodiment of a baffle structure in a sound attenuating structure of the present invention;
FIG. 6 is a structural view of a turbulent flow structure in a sound deadening structure according to a second embodiment of the present invention;
FIG. 7 is a structural view of a third embodiment of a spoiler structure in the sound attenuating structure of the present invention;
FIG. 8 is a flow chart of the electro-optical liquid level control in the sound attenuating structure of the present invention.
The reference numbers in the figures denote:
100. a compressor housing; 200. a cylinder; 300. a sound deadening structure; 1. an exhaust pipe; 2. a constriction; 3. an exhaust port; 31. an oil return pipe; 4. a first sound-deadening vessel; 41. a first outlet; 42. a turbulent flow structure; 422. an air gap channel; 43. an oil drain hole; 5. a signal detection device; 51. an optical signal transmitting terminal; 52. an optical signal receiving end; 53. a control valve (preferably a solenoid valve); 6. an oil return passage; 7. a signal processor; 8. a second sound-deadening vessel; 9. a third sound-deadening vessel; 10. and (4) sucking a pipe.
Detailed Description
As shown in fig. 2-8, the present invention provides a compressor assembly (preferably adapted for use in a reciprocating piston compressor) comprising:
a compressor housing 100 in which a cylinder 200 having an exhaust port is provided inside the compressor housing 100;
a sound deadening structure 300 provided outside the compressor housing 100, the sound deadening structure 300 communicating with an exhaust port of the cylinder 200 through an exhaust pipe 1 so as to guide exhaust gas in the cylinder 200 into the sound deadening structure 300.
According to the invention, the silencing structure is arranged outside the compressor shell, and the exhaust of the exhaust port of the air cylinder is communicated to the silencing structure outside the shell through the exhaust pipe, so that compared with the mode that the silencing structure is arranged inside the compressor shell in the prior art, the condition that the temperature in the shell is increased due to the heat release of high-temperature and high-pressure exhaust in the shell can be effectively avoided, and the problem that the compressor is seriously overheated is effectively solved; through setting up silencing structure in compressor housing outside, can effectively solve the limited casing inner space of piston compressor exhaust muffler and lead to the not good problem of noise cancelling effect, can increase silencing structure's volume as required to effectively improve the noise cancelling effect.
The invention utilizes the technologies of an external three-stage exhaust silencer, a turbulent flow structure, an automatic oil return mechanism and the like, can reduce the exhaust noise of the piston compressor, strengthen the timely separation and oil return of a mixture of a refrigerant and lubricating oil to a shell, reduce the influence of high-temperature and high-pressure exhaust on the overheating in the shell, solve the problems of high exhaust noise, untimely oil separation and oil return, great reduction of the overheating in the shell and the like of the piston compressor, and can improve the comprehensive performance of the piston compressor. The method comprises the following specific points:
1. the external three-stage exhaust silencer of the piston compressor, namely a large cavity, a small cavity and a spherical cavity, is designed, so that the silencing and noise reducing effects are obvious, and meanwhile, the shell overheating caused by exhaust heat release is greatly reduced;
2. an exhaust turbulent flow structure is designed, so that airflow is uniform, exhaust oil-gas separation is enhanced, and the oil spitting rate is reduced;
3. the photoelectric liquid level sensor and the electromagnetic valve are used for controlling the liquid level height of the lubricating oil, so that the lubricating oil is returned to the interior of the shell in time, the sufficient quantity and reliability of the lubricating oil in the shell can be accurately and rapidly ensured, and the influence on the interior of the shell during oil return is reduced as much as possible;
the invention starts with the problems of exhaust noise, oil separation and return, overheating and the like, and reduces the exhaust noise, separates the lubricating oil contained in the refrigerant in time, returns the lubricating oil to the inside of the shell, reduces the influence of exhaust on the overheating in the shell and comprehensively improves the performance of the piston compressor by designing the external at least two-stage exhaust oil return silencer.
1. The external three-stage exhaust silencer is arranged outside the shell, can bring exhaust heat to the outside of the shell, directly reduces the heat release of exhaust to the inside of the shell, reduces suction overheat, avoids high temperature of a motor, and can directly improve the performance of the piston compressor;
2. the designed external three-stage exhaust silencer can greatly reduce exhaust noise through three-stage silencing of the large cavity, the small cavity and the spherical cavity, meanwhile, the spherical buffer cavity and the turbulence structure are arranged in the silencer, transmission of high-speed exhaust noise is slowed down, and airflow is uniform;
3. in addition, the inside spherical cushion chamber and the vortex structure that set up of muffler strengthen the oil-gas separation effect, and the lubricating oil liquid drop constantly collides the gathering, collects exhaust muffler bottom under the action of gravity to set up oil return structure and in time discern the oil level, the valve is opened inside the oil return compressor shell, guarantees the required oil mass of compressor and promptness.
Due to the structural characteristics of the totally-enclosed piston compressor, the pump body assembly and the motor are enclosed in the shell, high-temperature and high-pressure exhaust is subjected to noise reduction and heat release in the shell through the exhaust silencer, so that the temperature in the shell is rapidly increased, and the suction overheating and the overhigh temperature of the motor are directly influenced; meanwhile, the exhaust silencer is limited by the limited space position in the shell, the actual silencing effect is limited, the comprehensive performance of the compressor is reduced, and the performance improvement of the totally-enclosed piston compressor is limited to a great extent. In addition, because the totally-enclosed compressor is limited to discharge capacity and space, an oil-gas separator and an oil return structure are not usually arranged, but the problem that the oil quantity of exhaust gas is large is increasingly obvious along with the continuous increase of the rotating speed of the piston compressor, the performance of the piston compressor is seriously influenced, even the oil return of the compressor is not timely, the oil liquid level is low, and the running power consumption of the compressor is abnormal or the compressor is locked and stopped due to the fact that lubricating oil is insufficient. The invention is created in that: by utilizing the technologies of the external three-stage exhaust silencer, the turbulence structure, the automatic oil return mechanism and the like, the exhaust noise of the piston compressor can be reduced, the mixture of the refrigerant and the lubricating oil can be timely separated and returned to the shell, the influence of high-temperature and high-pressure exhaust on overheating in the shell is reduced, the problems that the exhaust noise of the piston compressor is large, oil is separated and returned in time, the overheating in the shell is greatly reduced and the like are solved, and the comprehensive performance of the piston compressor can be improved.
The exhaust silencer is usually placed inside a shell of the piston compressor, exhaust firstly passes through the exhaust silencer on a continuous casting cylinder seat and then is connected with an inner exhaust pipe to be coiled in the space in the shell, and therefore exhaust heat release and poor silencing effect are caused. The problem of unable oil separation return oil. The overall appearance structure schematic diagram is shown in FIG. 1; the invention designs a novel structure, namely an external three-stage exhaust silencer, which is connected and installed outside a compressor shell, a low-temperature and low-pressure refrigerant is directly discharged outside the shell after being compressed, less exhaust gas releases heat in the shell, and the external three-stage exhaust silencer is subjected to three-stage exhaust silencing, and the specific installation form of the external three-stage exhaust silencer is shown in a front view and a top view of the overall appearance installation respectively as shown in figures 2 and 3.
Preferably, the first and second electrodes are formed of a metal,
an oil return pipe 31 is disposed at the bottom of the sound-deadening structure 300, and one end of the oil return pipe 31 is communicated with the inside of the sound-deadening structure 300, and the other end is communicated with the inside of the compressor housing 100. The invention also can effectively perform oil return action on the compressor through the oil return pipe arranged at the bottom of the silencing structure.
Preferably, the first and second electrodes are formed of a metal,
the silencing structure 300 includes a first silencing container 4 having a first silencing chamber, and the exhaust pipe 1 is communicated with the first silencing chamber inside the first silencing container 4. This is a preferred form of the silencing structure of the present invention, and the first silencing container, which has the first silencing chamber, can communicate with the exhaust pipe, so as to effectively silence the exhaust gas in the chamber.
Preferably, the first and second electrodes are formed of a metal,
the top of the first silencing container 4 is provided with a first outlet 41, and/or the bottom of the first silencing container 4 is provided with an oil discharge hole 43, and/or the first silencing container 4 is of a spherical structure (including a spherical shape or an ellipsoidal shape). Can discharge the gas after first amortization container through first export, the oil drain hole is used for the oil of discharge oil-gas separation, and the container of spherical structure can strengthen noise cancelling effect and oil content effect.
Preferably, the first and second electrodes are formed of a metal,
a turbulent flow structure 42 is also arranged in the first sound-deadening vessel 4. The setting through the vortex structure can strengthen the disturbance to the air current, improves the oil-gas separation effect, can also strengthen the noise cancelling effect.
Preferably, the first and second electrodes are formed of a metal,
the flow disturbing structure 42 comprises a plate-shaped structure, the plate surface of the plate-shaped structure is opposite to the flowing direction of the airflow in the exhaust pipe 1, and at least one air gap channel 422 allowing the airflow to flow through is arranged on the plate-shaped structure.
The invention solves the following technical problems:
1. after the high-temperature and high-pressure superheated refrigerant vapor is compressed, the environment temperature in the shell is rapidly increased due to heat release of the superheated refrigerant vapor, so that the compressor is seriously overheated and the like;
2. the exhaust silencer of the piston compressor is limited in the inner space of the shell, so that the practical exhaust silencing effect is poor, and the airflow noise and vibration are large;
3. when the compressor exhausts, the refrigerant carries partial lubricating oil, the lubricating oil cannot be separated in time, and the lubricating oil returns to the inside of the compressor untimely, so that a series of lubricating problems such as insufficient lubricating oil required by the operation of the compressor and the like are caused.
Preferably, the first and second electrodes are formed of a metal,
the plate-like structure is a circular plate, the air gap channel 422 is a multi-section bent deflection channel, and the deflection channel extends outwards in the radial direction from the circle center of the circular plate. This is the preferred structural style of the first embodiment of the turbulent flow structure of the present invention, and referring to fig. 5, it can realize the multi-directional turbulent flow effect to the air flow, improve the oil-gas separation effect, and enhance the noise reduction effect.
Preferably, the first and second electrodes are formed of a metal,
the number of the deflection channels is multiple, and the deflection channels radially extend outwards from the circle center of the circular plate. This is a further preferable configuration of the first embodiment of the present invention, and a plurality of radially outward extensions can form a turbulent flow effect on the radial direction of the airflow, thereby improving the separation effect.
Preferably, the first and second electrodes are formed of a metal,
the plate-like structure is a circular plate and the air gap channel 422 is a plurality of hole structures provided on the circular plate. The second preferred structure form of the turbulent flow structure of the present invention is shown in fig. 6, which can realize turbulent flow effect in the multi-channel direction of the air flow, improve the oil-gas separation effect, and enhance the noise reduction effect.
Preferably, the first and second electrodes are formed of a metal,
the hole structure is a circular hole or a triangular hole. The turbulence structure can adopt a round thin plate with round holes, triangular holes, various polygons and other similar structures besides the deflection structure adopted by the optimal scheme, as shown in figures 6-7.
FIG. 4 shows the internal structure of the external three-stage exhaust muffler, which is specifically illustrated in the drawing; after the piston compressor is compressed, the compressed gas is discharged out of the shell through a pipeline, the discharged gas is connected with an external exhaust pipe 1, the high-speed discharged gas directly rushes to the surface of a turbulence structure 42 through an inlet pipeline of a silencer, the turbulence structure is circular in shape, the peripheral edges of the turbulence structure slightly shrink towards the center, after passing through the surface of the turbulence structure, the airflow path of a refrigerant changes along with the turbulence structure to increase airflow turbulence, lubricating oil droplets collide with each other and gather with each other in the turbulence process, the turbulence structure strengthens the gas-liquid separation effect, meanwhile, the lubricating oil quickly gathers at the bottom of the exhaust silencer under the action of gravity and is connected with an oil return channel 6, the separated high-pressure gas reduces the speed on the inner wall of the spherical cavity to reduce the flow sound of the discharged gas, and is continuously discharged upwards through a first outlet 41 of the spherical cavity and enters a large silencing cavity and a small silencing cavity, the exhaust noise is weakened continuously for many times, and the exhaust silencing effect is obvious.
Preferably, the first and second electrodes are formed of a metal,
silencing structure 300 includes second amortization container 8, 8 covers of second amortization container are established the outside of first amortization container 4, first amortization container 4 the exhaust of first export 41 with second amortization container 8 intercommunication, oil drain hole 43 with 8 intercommunications of second amortization container, just 8 bottoms of second amortization container are provided with oil return channel 6. Through the second amortization container that sets up can form the two-stage noise cancelling effect of two containers together with first amortization container, can further improve the noise cancelling effect to gas to reinforcing oil separating effect and oil return effect.
Preferably, the first and second electrodes are formed of a metal,
be provided with control valve 53 in the oil return passageway 6 the corresponding high position of oil return passageway 6 still is provided with signal detection device 5, signal detection device 5 can detect the oil level height in the oil return passageway 6, compressor unit still include with signal processor 7 that signal detection device 5 electricity is connected, signal processor 7 still with control valve 53 electricity is connected. By arranging the control valve, the signal detection device and the signal processor, the invention can realize the functions of signal detection, signal processing and intelligent control, judge whether the interior of the compressor is lack of oil or not according to the height of the oil level in the oil return pipeline, further control whether oil return is carried out or not, and effectively ensure that the oil supply in the interior of the compressor is normal.
Preferably, the first and second electrodes are formed of a metal,
the signal detection device 5 includes an optical signal transmitting terminal 51 and an optical signal receiving terminal 52. The signal detection device is a preferred structure form of the signal detection device, a photoelectric liquid level sensor is arranged on the outer side of an oil return pipeline, light emitted by a light signal emitting end 51 is reflected and refracted on a two-phase medium interface of a gaseous refrigerant and liquid lubricating oil, and an opposite light signal receiving end 52 receives light signal feedback and performs corresponding action after being identified by a signal processor 7; if the oil level is identified to be high, the signal processor 7 sends out an instruction for starting the control valve 53, after the control valve 53 (preferably an electromagnetic valve) is opened, the lubricating oil stored at the bottom of the oil return pipe can quickly return to the interior of the compressor, the liquid level of the lubricating oil drops below the set liquid level, the photoelectric liquid level sensor quickly identifies again at high frequency, and when the liquid level is judged to be low, the control valve 53 can be closed in time, the structure is accurate, the response speed is high, the time is short, the liquid level control is accurate, and the specific control flow is shown in fig. 8.
The invention adopts a photoelectric liquid level sensor, has accurate identification and quick response, and can also adopt devices with similar principles such as a resistance type liquid level sensor and the like.
Preferably, the first and second electrodes are formed of a metal,
the silencing structure 300 further comprises a third silencing container 9, the third silencing container 9 is arranged at the upper end of the second silencing container 8 and communicated with the inside of the second silencing container 8, and an exhaust port 3 is formed at the top of the third silencing container 9. The third silencing container can form a three-level silencing effect of the three containers together with the first silencing container and the second silencing container, so that the silencing effect on gas can be further improved, and the oil separation effect and the oil return effect are enhanced. Except for the three-stage exhaust silencing cavity, at least two-stage or single-stage silencing cavities can be simply adopted, the silencing and noise reduction effects are slightly poor, and the silencing cavities are simply added to form a four-stage silencer and other more stages; the shape of the sound-deadening cavity is not limited to a cone shape, but can also be a cylinder shape, a polygonal column shape or other similar structures.
Preferably, the first and second electrodes are formed of a metal,
the junction of the second sound-deadening vessel 8 and the third sound-deadening vessel 9 is formed as a constriction 2 capable of allowing the passage of a gas flow. Further blocking of oil gas can be achieved through the contraction opening, oil return and oil-gas separation are effectively guaranteed, oil-gas separation effect and oil return amount are improved, and noise reduction effect is improved.
The invention also provides a refrigerator comprising the compressor assembly of any one of the preceding claims. The invention utilizes the technologies of an external three-stage exhaust silencer, a turbulent flow structure, an automatic oil return mechanism and the like, can reduce the exhaust noise of the piston compressor, strengthen the timely separation and oil return of a mixture of a refrigerant and lubricating oil to a shell, reduce the influence of high-temperature and high-pressure exhaust on the overheating in the shell, solve the problems of high exhaust noise, untimely oil separation and oil return, great reduction of the overheating in the shell and the like of the piston compressor, and can improve the comprehensive performance of the piston compressor.
The invention also provides a control method of the compressor assembly, which uses the compressor assembly as described in any one of the above items to control the oil return of the silencing structure according to the height of the oil level in the silencing structure. Can realize signal detection and signal processing and intelligent control's effect, can judge whether the compressor is inside to lack oil according to the oil level height in returning oil pipe way, and then control whether to return oil, effectively guarantee that the inside fuel feeding of compressor is normal.
Preferably, the first and second electrodes are formed of a metal,
when the silencing structure 300 is comprised of the second silencing container 8, the oil return passage 6, the control valve 53, the signal detection device 5 and the signal processor 7:
when the signal detection device 5 detects that the oil level in the oil return passage 6 is higher than a first preset height, the signal processor 7 controls the control valve 53 to open so as to return oil from the oil return passage 6;
when the signal detection device 5 detects that the oil level in the oil return passage 6 is lower than a second preset height, the signal processor 7 controls the control valve 53 to close, so that the oil return passage 6 closes oil return.
The optimal control mode for controlling the oil return process is that the photoelectric liquid level sensor and the electromagnetic valve are used for controlling the liquid level height of the lubricating oil, so that the lubricating oil is returned to the interior of the shell in time, and the sufficient and reliable lubricating oil in the shell can be accurately and rapidly ensured; if the oil level is identified to be high, the processor 7 sends an instruction for starting the control valve 53, after the control valve 53 (preferably an electromagnetic valve) is opened, the lubricating oil stored at the bottom of the oil return pipe can quickly return to the interior of the compressor, the liquid level of the lubricating oil drops below a set liquid level, the photoelectric liquid level sensor quickly identifies again at high frequency, and when the liquid level is judged to be low, the control valve 53 can be closed in time, the structure is accurate, the response speed is high, the time is short, the liquid level control is accurate, and a specific control flow is shown in fig. 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (18)
1. A compressor assembly, characterized by: the method comprises the following steps:
a compressor housing (100) in which a cylinder (200) having an exhaust port is provided inside the compressor housing (100);
the silencing structure (300) is arranged outside the compressor shell (100), and the silencing structure (300) is communicated with an exhaust port of the cylinder (200) through an exhaust pipe (1) so as to guide exhaust in the cylinder (200) to the silencing structure (300).
2. The compressor assembly of claim 1, wherein:
an oil return pipe (31) is arranged at the bottom of the silencing structure (300), one end of the oil return pipe (31) is communicated with the inside of the silencing structure (300), and the other end of the oil return pipe is communicated with the inside of the compressor shell (100).
3. The compressor assembly of claim 1 or 2, wherein:
the silencing structure (300) comprises a first silencing container (4) with a first silencing cavity, and the exhaust pipe (1) is communicated with the first silencing cavity inside the first silencing container (4).
4. The compressor assembly of claim 3, wherein:
the top of the first silencing container (4) is provided with a first outlet (41), and/or the bottom of the first silencing container (4) is provided with an oil drain hole (43), and/or the first silencing container (4) is of a spherical structure.
5. The compressor assembly of claim 3, wherein:
and a turbulent flow structure (42) is also arranged in the first silencing container (4).
6. The compressor assembly of claim 5, wherein:
the flow disturbing structure (42) comprises a plate-shaped structure, the plate surface of the plate-shaped structure is opposite to the flowing direction of the airflow in the exhaust pipe (1), and at least one air gap channel (422) allowing the airflow to flow through is arranged on the plate-shaped structure.
7. The compressor assembly of claim 6, wherein:
the plate-shaped structure is a circular plate, the air gap channel (422) is a multi-section bent deflection channel, and the deflection channel extends outwards from the circle center of the circular plate in the radial direction.
8. The compressor assembly of claim 7, wherein:
the number of the deflection channels is multiple, and the deflection channels radially extend outwards from the circle center of the circular plate.
9. The compressor assembly of claim 6, wherein:
the plate-like structure is a circular plate and the air gap channel (422) is a plurality of hole structures provided on the circular plate.
10. The compressor assembly of claim 9, wherein:
the hole structure is a circular hole or a triangular hole.
11. The compressor assembly of any one of claims 4-10, wherein:
amortization structure (300) include second amortization container (8), second amortization container (8) cover is established the outside of first amortization container (4), first amortization container (4) the exhaust of first export (41) with second amortization container (8) intercommunication, oil drain hole (43) with second amortization container (8) intercommunication, just second amortization container (8) bottom is provided with oil return channel (6).
12. The compressor assembly of claim 11, wherein:
be provided with control valve (53) in oil return passageway (6) the corresponding high position of oil return passageway (6) still is provided with signal detection device (5), signal detection device (5) can detect oil level height in oil return passageway (6), compressor assembly still include with signal detection device (5) electric signal processor (7), signal processor (7) still with control valve (53) electricity is connected.
13. The compressor assembly of claim 12, wherein:
the signal detection device (5) comprises an optical signal transmitting end (51) and an optical signal receiving end (52).
14. The compressor assembly of any one of claims 11-13, wherein:
amortization structure (300) still include third amortization container (9), third amortization container (9) set up in the upper end of second amortization container (8), and with the inside intercommunication of second amortization container (8), the top of third amortization container (9) still is formed with gas vent (3).
15. The compressor assembly of claim 14, wherein:
the junction of the second sound-deadening vessel (8) and the third sound-deadening vessel (9) is formed as a constriction (2) capable of allowing the passage of a gas flow.
16. A refrigerator, characterized in that: comprising a compressor assembly according to any one of claims 1 to 15.
17. A method of controlling a compressor assembly, comprising: use of a compressor assembly according to any of claims 1-15, to control the oil return of the sound-attenuating structure in dependence on the level of the oil level in the sound-attenuating structure.
18. The control method according to claim 17, characterized in that:
when the silencing structure (300) comprises a second silencing container (8), an oil return channel (6), a control valve (53), a signal detection device (5) and a signal processor (7):
when the signal detection device (5) detects that the oil level in the oil return passage (6) is higher than a first preset height, the signal processor (7) controls the control valve (53) to be opened so as to return oil from the oil return passage (6);
when the signal detection device (5) detects that the oil level in the oil return channel (6) is lower than a second preset height, the signal processor (7) controls the control valve (53) to close, so that the oil return channel (6) closes oil return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911182431.3A CN111043009A (en) | 2019-11-27 | 2019-11-27 | Compressor assembly, refrigerator and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911182431.3A CN111043009A (en) | 2019-11-27 | 2019-11-27 | Compressor assembly, refrigerator and control method |
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| CN111043009A true CN111043009A (en) | 2020-04-21 |
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| CN201911182431.3A Pending CN111043009A (en) | 2019-11-27 | 2019-11-27 | Compressor assembly, refrigerator and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357153A (en) * | 2021-07-23 | 2021-09-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil blocking structure, compressor and refrigeration equipment |
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| JPH05113191A (en) * | 1991-10-22 | 1993-05-07 | Kobe Steel Ltd | Compressor |
| CN201526433U (en) * | 2009-10-16 | 2010-07-14 | 攀钢集团攀枝花钢钒有限公司 | Compressor silencer |
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Application publication date: 20200421 |