CN108700054B - Compressor and refrigerating circulatory device - Google Patents
Compressor and refrigerating circulatory device Download PDFInfo
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- CN108700054B CN108700054B CN201680072660.8A CN201680072660A CN108700054B CN 108700054 B CN108700054 B CN 108700054B CN 201680072660 A CN201680072660 A CN 201680072660A CN 108700054 B CN108700054 B CN 108700054B
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- liquid level
- crankshaft
- electrode
- level sensor
- container
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Classifications
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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
-
- 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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/02—Lubrication; Lubricant separation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
- G01F23/241—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid for discrete levels
- G01F23/242—Mounting arrangements for electrodes
-
- 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
- F04B2205/00—Fluid parameters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Compressor (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Within the compressor, the position for being capable of detecting when to carry out the liquid level of bottom line of fuel feeding using oil supply mechanism is arranged in liquid level sensor (30).Liquid level sensor (30) is set to a position of the inner wall of container (21).The length direction that liquid level sensor (30) is configured to electrode (34) is orthogonal with the vertical line of central axis of center Z-direction crankshaft (24) from electrode (34).In addition, the length direction that liquid level sensor (30) is configured to electrode (34) is orthogonal with the axial direction of crankshaft (24).
Description
Technical field
The present invention relates to compressor and refrigerating circulatory devices.
Background technique
In the past, refrigerator oil had been held in closed container and had during operation been supplied to refrigerator oil using crankshaft
In the compressor of each sliding part of compression mechanism, there is following compressor: being provided with the mixed liquor of detection refrigerator oil and refrigerant
Liquid level and refrigerator oil and refrigerant mixing ratio capacitance type liquid level detector (referring for example to patent document
1)。
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 4-54417 bulletin
Summary of the invention
Subject to be solved by the invention
In previous compressor, it is formed in top to detect the sensor of liquid level of mixed liquor and detects refrigerator
Oil and the sensor of the mixing ratio of refrigerant are formed in the mode of lower part, the three different electrode plate groups of length by of same size
It closes and constitutes capacitance type liquid level detector.In the liquid level detector of this structure, it is difficult to ensure enough intensity.Due to
The fluid force as caused by the mixed liquor in closed container can be generated during compressor operation, so liquid level detector is possible to break
Damage.In the case where liquid level detector immerses mixed liquor, it is also possible to interfere the flowing of mixed liquor, and to the fuel feeding of compression mechanism
Efficiency reduces.In addition, according to the difference of the configuration of other structural members in closed container, level detection difficult to arrange sometimes
Device.In particular, needing to configure liquid in the range of the liquid level that should be detected to correctly detect the liquid level of mixed liquor
The top of face detector, it is possible to cannot ensure to configure the space of the lower part of liquid level detector below the range.
It is an object of the invention to prevent the mixed liquor institute by the refrigerator oil and refrigerant in container within the compressor
The effect of the fluid force of generation and the breakage for causing liquid level sensor.
Means for solving the problems
The compressor of a technical solution of the invention has:
Container, the container accumulate the mixed liquor of refrigerator oil and refrigerant in bottom；
Motor, the motor are accommodated in the container；
Crankshaft, the crankshaft are the rotary shafts of the motor, and draw institute from the bottom of the container during rotation
State mixed liquor；And
Liquid level sensor, the liquid level sensor have for detecting whether the liquid level of the mixed liquor reaches altitude datum
Strip electrode, the both ends of the length direction of the electrode on the direction of rotation of the crankshaft be located at mutually different position
It sets.
The effect of invention
According to the present invention, due within the compressor to be difficult to the mixed liquor by refrigerator oil and refrigerant in container
Liquid level sensor is arranged in the position of the influence of fluid force and posture, so the liquid as caused by the influence of the fluid force can be prevented
The breakage of face sensor.
Detailed description of the invention
Fig. 1 is the loop diagram of the refrigerating circulatory device of embodiment 1.
Fig. 2 is the loop diagram of the refrigerating circulatory device of embodiment 1.
Fig. 3 is the longitudinal section view of the compressor of embodiment 1.
Fig. 4 is the perspective view of the liquid level sensor of the compressor of embodiment 1.
Fig. 5 is the sectional elevation for showing the configuration of the liquid level sensor of compressor of embodiment 1.
Fig. 6 is the relationship for showing the liquid level in the configuration and container of the liquid level sensor of compressor of embodiment 1
Figure.
Fig. 7 is the relationship for showing the liquid level in the output and container of the liquid level sensor of compressor of embodiment 1
Chart.
Fig. 8 is the sectional elevation for showing the configuration of the liquid level sensor of the compressor of variation of embodiment 1.
Fig. 9 is the longitudinal section view and A-A cross-sectional view of the lower part of the compressor of embodiment 2.
Figure 10 is the partial perspective view of the liquid level sensor of the compressor of embodiment 3.
Figure 11 is the sectional elevation for showing the configuration of the liquid level sensor of compressor of embodiment 3.
Figure 12 is the perspective view of the liquid level sensor of the compressor of embodiment 4.
Figure 13 is the sectional elevation for showing the configuration of the liquid level sensor of compressor of embodiment 4.
Specific embodiment
Hereinafter, using Detailed description of the invention embodiments of the present invention.In addition, being assigned in each figure to same or equivalent part
Same appended drawing reference.In the explanation of embodiment, about same or equivalent part, its explanation is suitably omitted or simplified.It closes
In the structure of device, utensil and component etc., material, form and dimension etc. can suitably change within the scope of the invention.
Embodiment 1.
* * structure illustrates * * *
Referring to FIG. 1 and FIG. 2, illustrate the structure of the refrigerating circulatory device 10 of present embodiment.
Fig. 1 shows the refrigerant circuit 11 when refrigeration operation.Fig. 2 shows the refrigerant circuits 11 when heating operation.
In the present embodiment, refrigerating circulatory device 10 be air conditioner but it is also possible to be refrigerator, heat pump circulating device in this way
Air conditioner other than device.
Refrigerating circulatory device 10 has the refrigerant circuit 11 for refrigerant circulation.Refrigerating circulatory device 10 is also equipped with compression
Machine 12, four-way valve 13, the first heat exchanger 14 as outdoor heat exchanger, the expansion mechanism 15 as expansion valve and as room
The second heat exchanger 16 of inside heat exchanger.Compressor 12, four-way valve 13, first heat exchanger 14, expansion mechanism 15 and second
Heat exchanger 16 is connect with refrigerant circuit 11.
Compressor 12 compresses refrigerant.Four-way valve 13 switches the side of refrigerant flowing in refrigeration operation and when heating operation
To.First heat exchanger 14, as condenser working, makes the refrigerant heat release being had compressed by compressor 12 in refrigeration operation.
That is, first heat exchanger 14 carries out heat exchange using the refrigerant being had compressed by compressor 12.First heat exchanger 14 is heating
As evaporator operation when operating, in outdoor air and heat exchange is carried out between the refrigerant that expansion mechanism 15 expands and is added
Warm refrigerant.Expansion mechanism 15 expands the refrigerant after condenser heat rejection.Second heat exchanger 16 is made in heating operation
For condenser working, make the refrigerant heat release being had compressed by compressor 12.That is, 16 use of second heat exchanger is pressed by compressor 12
The refrigerant to have contracted carries out heat exchange.Second heat exchanger 16 in refrigeration operation as evaporator operation, indoors air with
Heat exchange is carried out between the refrigerant that expansion mechanism 15 expands and heats refrigerant.
Refrigerating circulatory device 10 is also equipped with controller 17.
Specifically, controller 17 is microcomputer.In fig. 1 and fig. 2, controller 17 and compressor 12 are only shown
Connection, but controller 17 can also not only be connect with compressor 12, also be connected to other than the compressor 12 of refrigerant circuit 11
Element connection.The state of the element of the monitoring of controller 17 or control connection.
As the refrigerant recycled in refrigerant circuit 11, the HFC such as R32, R125, R134a, R407C and R410A are used
(Hydro Fluoro Carbon) class refrigerant.Alternatively, using R1123, R1132 (E), R1132 (Z), R1132a, R1141,
The HFO such as R1234yf, R1234ze (E) and R1234ze (Z) (Hydro Fluoro Olefin) class refrigerant.Alternatively, using
The natural refrigerants such as R290 (propane), R600a (iso-butane), R744 (carbon dioxide), R717 (ammonia).Alternatively, using other systems
Cryogen.Alternatively, using the two or more mixtures in these refrigerants.
Referring to Fig. 3, illustrate the structure of compressor 12.
In the present embodiment, compressor 12 is hermetic type compressor.Specifically, compressor 12 is screw compressor,
It may also be rotary compressor or reciprocating compressor.
Compressor 12 have container 21, compression mechanism 22, motor 23, crankshaft 24, first bearing 26, second bearing 27 and
Liquid level sensor 30.
Specifically, container 21 is closed container.The mixing of refrigerator oil and refrigerant is contained in the bottom of container 21
Liquid 25.Suction line 41 for sucking refrigerant and the discharge pipe 42 for discharging refrigerant are installed on the container 21.
Compression mechanism 22 is accommodated in container 21.Specifically, the inside upper part of container 21 is arranged in compression mechanism 22.
Motor 23 is also accommodated in container 21.Specifically, motor 23 is set to compression mechanism in the inside of container 21
22 lower section and compared to the bottom of container 21 be set to top.In the present embodiment, motor 23 is induction conductivity, but
The motor being also possible to other than the induction conductivities such as brushless DC (Direct Current) motor.
Compression mechanism 22 and motor 23 are linked by crankshaft 24.Crankshaft 24 is the rotary shaft of motor 23, and is to pressure
The oil supply mechanism 28 for the refrigerator oil that each sliding part supply mixed liquor 25 of contracting mechanism 22 includes.That is, crankshaft 24 is during rotation
Mixed liquor 25 is drawn from the bottom of container 21.In the present embodiment, the refrigerator oil that mixed liquor 25 includes utilizes pressure difference fuel feeding
Mode is supplied to each sliding part of compression mechanism 22 by the inside of crankshaft 24, and lubricates each sliding part of compression mechanism 22.Make
For refrigerator oil, POE (polyol ester), PVE (polyvinylether) and AB (alkylbenzene) etc. used as synthetic oil.
The lower part of crankshaft 24 is provided with the sucting 29 from opening sucking mixed liquor 25.Specifically, sucting 29 is
Oil pipe.In the present embodiment, due to using pressure difference fuel system, so not needing oil pump, but can also be under crankshaft 24
Oil pump is arranged as sucting 29 in portion, and using the fuel system for utilizing oil pump.In the fuel system using oil pump, mixed liquor
25 refrigerator oils for including are drawn from oil pump and are supplied to each sliding part of compression mechanism 22 along with the rotation of crankshaft 24, profit
Each sliding part of sliding compression mechanism 22.
Compression mechanism 22 is compressed refrigerant, the rotary force warp of the motor 23 by the rotation power drive of motor 23
It is transmitted by crankshaft 24.Specifically, the refrigerant is the gas refrigerant for being inhaled into the low pressure of suction line 41.By compression mechanism
22 high temperature the having compressed and gas refrigerant of high pressure is discharged in container 21 from compression mechanism 22.It is discharged from compression mechanism 22
Gas refrigerant is discharged by discharge pipe 42 to external refrigerant circuit 11 from the space in container 21.
First bearing 26 is chimeric with crankshaft 24 in the position of the top of motor 23, and is freely and rotatably supported crankshaft 24.
Between first bearing 26 and crankshaft 24, the mixed liquor of the inside of the crankshaft 24 as oil supply mechanism 28 is drawn by supplying
25 refrigerator oils for including are to form oil film.
Second bearing 27 is chimeric with crankshaft 24 in the position of the lower section of motor 23, and is freely and rotatably supported crankshaft 24.
Between second bearing 27 and crankshaft 24, the mixed liquor of the inside of the crankshaft 24 as oil supply mechanism 28 is drawn by supplying
25 refrigerator oils for including are to form oil film.
The liquid for being capable of detecting when to be able to carry out the bottom line of fuel feeding using oil supply mechanism 28 is arranged in liquid level sensor 30
The position in face.One end of conducting wire 31 is connected on liquid level sensor 30.The other end of conducting wire 31 with by being fixedly welded on appearance
The terminal 32 of device 21 connects.Terminal 32 is connect by wiring 33 with the controller 17 being located at outside container 21.Controller 17 is successively
Via conducting wire 31, terminal 32 and wiring 33, the state of liquid level sensor 30 is come out as electrical signal detection, to detect mixing
Whether the liquid level of liquid 25 reaches altitude datum.Then, controller 17 is whether the liquid level of mixed liquor 25 reaches according to testing result
Altitude datum, to control the operating of compressor 12.
Referring to Fig. 4, illustrate the structure of liquid level sensor 30.
Liquid level sensor 30 has the electrode 34 of strip, and the electrode 34 is connected with one end of above-mentioned conducting wire 31.At this
In embodiment, as electrode 34, the electrode 34 of a pair of of rectangular plate-like is arranged in the opposite mode of mutual plate face.Liquid level sensing
Device 30 also has a pair of of insulator 35.One insulator 35 fixes the length side of two electrodes 34 in mode spaced at intervals
Upward one end.Another insulator 35 is fixed another on the length direction of two electrodes 34 in mode spaced at intervals
One end.
Referring to Fig. 5 and Fig. 6, illustrate the configuration of liquid level sensor 30.
Liquid level sensor 30 is set to a position of the inner wall of container 21.Liquid level sensor 30 can be directly mounted at appearance
The inner wall of device 21, but in the present embodiment, the inner wall of container 21, the fixed structure are fixed on via the fixing component 43 of plate
The shape matchingly bending of the inner wall of part 43 and container 21.
The both ends of the length direction of electrode 34 are located at mutually different position on the direction of rotation of crankshaft 24.That is, in
The heart is located in the concentric circles on the central axis of crankshaft 24, when the center Z of electrode 34 is located at 0 degree of position, positioned at the length of electrode 34
The point X of one end on degree direction is located at the position of the angle smaller than 0 degree, the point of the other end on the length direction of electrode 34
Y is located at the position of the angle bigger than 0 degree.That is, when looking down, from the point X of one end on the length direction for being located at electrode 34 towards
The vertical line of the central axis of crankshaft 24, from be located at electrode 34 length direction on the other end point Y-direction the central axis of crankshaft 24
Vertical line be formed by angle θ than 0 degree big.
In the present embodiment, liquid level sensor 30 is configured to the both ends from the length direction of electrode 34 into crankshaft 24
Mandrel is equidistant.That is, liquid level sensor 30 is configured to the length direction and the crankshaft of the center Z-direction from electrode 34 of electrode 34
The vertical line of 24 central axis is orthogonal.In other words, liquid level sensor 30 is configured to that the both ends of the length direction of electrode 34 will be located at
Point X, Y connection the circle that is located on the central axis of crankshaft 24 with center of straight line it is tangent, the center Z mono- at point of contact and electrode 34
It causes.In addition, the length direction that liquid level sensor 30 is configured to electrode 34 is orthogonal with the axial direction of crankshaft 24.In the present embodiment,
Since electrode 34 is rectangular plate-like, so the short side direction of electrode 34 is axial consistent with crankshaft 24.
Liquid level sensor 30 can be set near the central axis of crankshaft 24 or the central axis of crankshaft 24 and container 21 in
Near the centre of wall, but in the present embodiment, as shown in figure 5, being set to the inner wall of container 21.Therefore, it can obtain as follows
Effect: it is easy to ensure that the configuration space of other structural members in container 21.
As in Fig. 5 with thick-line arrow illustratively, compressor 12 operate during, in container 21, refrigerator oil and refrigeration
The mixed liquor 25 of agent is flowed along the direction of rotation of crankshaft 24.In the present embodiment, as shown in figure 5, the length side of electrode 34
To both ends on the direction of rotation of crankshaft 24 be located at mutually different position.Therefore, following effect: liquid level sensing can be obtained
Device 30 is not readily susceptible to the influence of fluid force caused by mixed liquor 25.Following effect can be obtained: liquid level sensor 30 is not yet
It is easy to interfere the flowing of mixed liquor 25.
In particular, in the present embodiment, as shown in figure 5, the length direction of electrode 34 and the center Z-direction from electrode 34
The vertical line of the central axis of crankshaft 24 is orthogonal, and the direction of electrode 34 and the flowing of mixed liquor 25 are substantially parallel.Therefore, liquid level sensor
30 effects for being not readily susceptible to the influence of fluid force caused by mixed liquor 25 improve.Liquid level sensor 30 is not easy to interfere mixing
The effect of the flowing of liquid 25 is also got higher.
In addition, in the present embodiment, as shown in fig. 6, the length direction of electrode 34 is orthogonal with the axial direction of crankshaft 24, electrode
The size of 34 up and down direction is small.Therefore, liquid level sensor 30 is not readily susceptible to the influence of fluid force caused by mixed liquor 25
Effect further get higher.Liquid level sensor 30 is not easy that the effect of the flowing of mixed liquor 25 is interfered also further to get higher.Due to
The space that electrode 34 occupies in the up-down direction is small, so the configuration that can also obtain liquid level sensor 30 becomes easy effect.
The minimum limit of surface area needed for the size of the up and down direction of electrode 34 is ensured to be the liquid level for ensuring to detect mixed liquor 25
Size.
In the present embodiment, as shown in figure 5, the electrode 34 of a pair of of strip crankshaft radially toward each other.And
And as shown in fig. 6, the lower end of each electrode 34 is located at the position higher than the opening of sucting 29.That is, the configuration of electrode 34 is not than
The position that the liquid level of 28 fuel feeding of oil supply mechanism can be utilized high.
* * movement illustrates * * *
Referring to Fig. 6 and Fig. 7, illustrate the movement of controller 17.
In state S1, the liquid level of mixed liquor 25 is in the range of usual liquid level.Liquid level sensor 30 soaks completely
Enter mixed liquor 25.
In state S2, the liquid level of mixed liquor 25 is also in the range of usual liquid level.The one of liquid level sensor 30
Mixed liquor 25 is immersed in part.
In state S3, the liquid level of mixed liquor 25 is in the range of guarding against liquid level.Liquid level sensor 30 does not soak
Enter mixed liquor 25, but sucting 29 immerses mixed liquor 25 reluctantly.
In state S4, the liquid level of mixed liquor 25 is in the range of being unable to fuel feeding liquid level.Due to liquid level sensor
30 and sucting 29 without immerse mixed liquor 25, so 28 fuel feeding of oil supply mechanism cannot be utilized.
Controller 17 measures the electrostatic capacitance between a pair of electrodes 34 via conducting wire 31, terminal 32 and wiring 33.Controller
17 detect the state of the liquid level of mixed liquor 25 according to the electrostatic capacitance of measurement.Controller 17 is the case where detection does well S3
Under, so that the operating frequency of compressor 12 is increased or is stopped the operating of compressor 12, so that refrigerator oil is returned from refrigerant circuit 11
Return container 21.Thereby, it is possible to prevent the generation of state S4, that is, preventing the liquid level of mixed liquor 25 from becoming cannot utilize for oil machine
The liquid level of 28 fuel feeding of structure.As a result, the damage of compressor 12 can be prevented.In addition, controller 17 makes compressor 12
The increased situation of operating frequency under, so that the operating frequency of compressor 12 is returned to common fortune at do well time point of S2 of detection
Turn frequency.
The effect of * * embodiment illustrates * * *
According to the present embodiment, the refrigerator oil and refrigerant due to being not readily susceptible in compressor 12 in container 21
Mixed liquor 25 caused by fluid force influence position and posture be arranged liquid level sensor 30, so can prevent by the stream
The breakage of liquid level sensor 30 caused by the influence of physical strength.Specifically, due to the stream of liquid level sensor 30 and mixed liquor 25
To configuring substantially in parallel, so the broken of the electrode 34 of the liquid level sensor 30 as caused by the fluid force of mixed liquor 25 can be prevented
Damage.Therefore, the reliability of compressor 12 can be made to improve.
According to the present embodiment, can prevent the liquid level of mixed liquor 25 from becoming cannot be using 28 fuel feeding of oil supply mechanism
Liquid level.Therefore, the reliability of compressor 12 can be made to improve.
According to the present embodiment, it can guarantee compressor 12 since the liquid level of the mixed liquor 25 in container 21 becomes
Reliability bottom line liquid level position be arranged liquid level sensor 30, so can also make the height of compressor 12
The size of liquid level sensor 30 on direction is smaller than previous.
* * other structures * * *
In the present embodiment, as shown in figure 5, liquid level sensor 30 is set to a position of the inner wall of container 21, but
As variation, liquid level sensor 30 can be set on the direction of rotation of crankshaft 24 two positions of the inner wall of container 21 with
On.About the variation, the difference of main explanation and present embodiment.
Referring to Fig. 8, illustrate the configuration of the liquid level sensor 30 of the compressor 12 of modified embodiment of the present embodiment.
Liquid level sensor 30 is set to three positions of the inner wall of container 21.Liquid level sensor 30 can be directly mounted at appearance
The inner wall of device 21, but in this variation, the inner wall of container 21, the fixing component are fixed on via the fixing component 43 of plate
43 with the shape matchingly bending of the inner wall of container 21.
According to this modification, in the configuration due to other structural members in container 21 and enough sizes difficult to arrange
In the case where liquid level sensor 30, by by 30 separate configuration of liquid level sensor of multiple small sizes in the position that can be configured,
Thus allow for the detection of the liquid level of same accuracy.That is, by the liquid level sensor 30 for configuring multiple small sizes, it can
Electrode 34 is configured in vacant space in container 21, so being able to carry out the electrode 34 for not influencing the space of other component
Configuration.Due to that can ensure the surface area of enough electrodes 34, so can ensure the precision of level detection.
In addition, at least one position of the inner wall of container 21 is arranged in liquid level sensor 30, it also can be set and holding
It is more than two positions or 4 positions of the inner wall of device 21.
Embodiment 2.
About present embodiment, the difference of main explanation and embodiment 1.
Referring to Fig. 9, illustrate the structure of the compressor 12 of present embodiment.
Compressor 12 is also equipped with plate 36.
The inside of container 21 is arranged in plate 36, in the axial direction of crankshaft 24 by the space for being accommodated with motor 23 be provided with
The space of liquid level sensor 30 separates.Specifically, plate 36 is that center is provided with the circular plate of through hole, than liquid level
The high position of sensor 30 and the mode of the following table face contact of second bearing 27 are chimeric with crankshaft 24.
According to the present embodiment, plate 36 can be utilized, the mixed liquor caused by the influence as motor 23, in container 21 is made
25 liquid level movement flattens slow.That is, the liquid level stabilizing of the mixed liquor 25 of the refrigerator oil and refrigerant in container 21 can be made.Cause
This, can be such that the detection error of the liquid level as caused by liquid level swinging reduces.That is, can make to carry out using liquid level sensor 30
Liquid level detection precision improve.
In the present embodiment, identically as embodiment 1, liquid level sensor 30 is set to one of the inner wall of container 21
Position, but identical as the variation of embodiment 1, liquid level sensor 30 can be set to appearance on the direction of rotation of crankshaft 24
It is more than two positions of the inner wall of device 21.
Embodiment 3.
About present embodiment, the difference of main explanation and embodiment 1.
Referring to Fig.1 0, illustrate the structure of the liquid level sensor 30 of the compressor 12 of present embodiment.
Liquid level sensor 30 is identically as embodiment 1 with the electrode 34 of strip, but electrode 34 is not such as embodiment party
The rectangular plate-like of formula 1, but the cylindrical shape of the both ends open of length direction.In the present embodiment, as electrode 34, Yi Duiyuan
The electrode 34 of tubular be arranged to a side inner peripheral surface and another party outer peripheral surface it is opposite.Identically as embodiment 1, liquid level senses
Device 30 also has a pair of of insulator 35.One insulator 35 fixes the length side of two electrodes 34 in mode spaced at intervals
Upward one end.Although not illustrating, another insulator 35 fixes two electrodes 34 in mode spaced at intervals
The other end on length direction.
1 configuration for illustrating liquid level sensor 30 referring to Fig.1.
Identically as embodiment 1, liquid level sensor 30 is set to a position of the inner wall of container 21.Liquid level sensor
30 can be directly mounted at the inner wall of container 21, but in the present embodiment, be fixed on container via the fixing component 43 of plate
21 inner wall, the shape matchingly bending of the fixing component 43 and the inner wall of container 21.
Identically as embodiment 1, the length direction and the center Z from electrode 34 that liquid level sensor 30 is configured to electrode 34
Vertical line towards the central axis of crankshaft 24 is orthogonal.In addition, liquid level sensor 30 is configured to the length direction and crankshaft 24 of electrode 34
Axial direction it is orthogonal.
According to the present embodiment, can be ensured with the size electrode 34 smaller than the electrode 34 of the rectangular plate-like of embodiment 1
Identical surface area.Space needed for the configuration of liquid level sensor 30 can be reduced.Therefore, the configuration transfiguration of liquid level sensor 30
Easily.
In the present embodiment, identically as embodiment 1, liquid level sensor 30 is set to one of the inner wall of container 21
Position, but identical as the variation of embodiment 1, liquid level sensor 30 can be set to appearance on the direction of rotation of crankshaft 24
It is more than two positions of the inner wall of device 21.In addition, compressor 12 can also have plate 36 identical with embodiment 2.
Embodiment 4.
About present embodiment, the difference of main explanation and embodiment 1.
Referring to Fig.1 2, illustrate the structure of the liquid level sensor 30 of the compressor 12 of present embodiment.
Liquid level sensor 30 is identically as embodiment 1 with the electrode 34 of strip, but electrode 34 is when looking down in circle
Bowing.In the present embodiment, as electrode 34, the electrode 34 of the plate of a pair of curved side opposite with mutual plate face
Formula setting.Identically as embodiment 1, liquid level sensor 30 also has a pair of of insulator 35.One insulator 35 with mutually every
The standard width of a room in an old-style house every mode fix two electrodes 34 length direction on one end.The insulator 35 of another party is with spaced at intervals
Mode fix the other end on the length direction of two electrodes 34.
3 configuration for illustrating liquid level sensor 30 referring to Fig.1.
Identically as embodiment 1, liquid level sensor 30 is set to a position of the inner wall of container 21.Liquid level sensor
30 can be directly mounted at the inner wall of container 21, but in the present embodiment, be fixed on container via the fixing component 43 of plate
21 inner wall, the shape matchingly bending of the fixing component 43 and the inner wall of container 21.
Identically as embodiment 1, the length direction and the center Z from electrode 34 that liquid level sensor 30 is configured to electrode 34
Vertical line towards the central axis of crankshaft 24 is orthogonal.In addition, liquid level sensor 30 is configured to the length direction and crankshaft 24 of electrode 34
Axial direction it is orthogonal.In the present embodiment, electrode 34 is in arc-shaped bend along the direction of rotation of crankshaft 24.
It according to the present embodiment, can be along the inner wall arrangement liquid level sensor 30 of container 21, in addition, since liquid level senses
The shape of device 30 and the flowing of mixed liquor 25 are substantially uniform, so can prevent the liquid level as caused by the fluid force of mixed liquor 25 from passing
The breakage of the electrode 34 of sensor 30.Therefore, the reliability of compressor 12 can be made to improve.
According to the present embodiment, due to can along the inner wall arrangement liquid level sensor 30 of container 21, so liquid level sense
Device 30 is not easy to interfere with other component.Therefore, the configuration transfiguration of liquid level sensor 30 is easy.
In the present embodiment, identically as embodiment 1, liquid level sensor 30 is set to one of the inner wall of container 21
Position, but identical as the variation of embodiment 1, liquid level sensor 30 can be set to appearance on the direction of rotation of crankshaft 24
It is more than two positions of the inner wall of device 21.In addition, compressor 12 can also have plate 36 identical with embodiment 2.
It this concludes the description of embodiments of the present invention, it can be by more than two embodiment groups in these embodiments
Merge and implements.Alternatively, can also partly implement the embodiment or more than two embodiments in these embodiments
Combination.In addition, can be made various changes as needed the present invention is not limited to these embodiments.
The explanation of appended drawing reference
10 refrigerating circulatory devices, 11 refrigerant circuits, 12 compressors, 13 four-way valves, 14 first heat exchangers, 15 expanding machines
Structure, 16 second heat exchangers, 17 controllers, 21 containers, 22 compression mechanisms, 23 motor, 24 crankshafts, 25 mixed liquors, 26 first
Bearing, 27 second bearings, 28 oil supply mechanisms, 29 suctings, 30 liquid level sensors, 31 conducting wires, 32 terminals, 33 wirings, 34 electrodes,
35 insulators, 36 plates, 41 suction lines, 42 discharge pipes, 43 fixing components.
Claims (11)
1. a kind of compressor, wherein have:
Container, the container accumulate the mixed liquor of refrigerator oil and refrigerant in bottom；
Motor, the motor are accommodated in the container；
Crankshaft, the crankshaft are the rotary shafts of the motor, and draw described mix from the bottom of the container during rotation
Close liquid；And
Liquid level sensor, the liquid level sensor have the length for whether reaching altitude datum for detecting the liquid level of the mixed liquor
The electrode of strip, the both ends of the length direction of the electrode are located at mutually different position on the direction of rotation of the crankshaft,
The lower part of the crankshaft is provided with sucting, the sucting sucks the mixed liquor from the opening of the sucting,
The liquid level sensor has the electrode of a pair of of strip as the electrode, and the electrode of the pair of strip is described
Crankshaft radially toward each other and respective lower end is located at the high position of opening than the sucting.
2. compressor according to claim 1, wherein
It is also equipped with plate, the plate is set to the inside of the container, and will be accommodated in the axial direction of the crankshaft described electronic
The space of machine is separated with the space for being provided with the liquid level sensor.
3. a kind of compressor, wherein have:
Container, the container accumulate the mixed liquor of refrigerator oil and refrigerant in bottom；
Motor, the motor are accommodated in the container；
Crankshaft, the crankshaft are the rotary shafts of the motor, and draw described mix from the bottom of the container during rotation
Close liquid；
Liquid level sensor, the liquid level sensor have the length for whether reaching altitude datum for detecting the liquid level of the mixed liquor
The electrode of strip, the both ends of the length direction of the electrode are located at mutually different position on the direction of rotation of the crankshaft；
And
Plate, the plate are set to the inside of the container, and the sky of the motor will be accommodated in the axial direction of the crankshaft
Between separated with the space for being provided with the liquid level sensor.
4. compressor according to any one of claim 1 to 3, wherein
The length direction of the electrode is orthogonal with the vertical line from the center of the electrode towards the central axis of the crankshaft.
5. compressor according to any one of claim 1 to 3, wherein
The length direction of the electrode is orthogonal with the axial direction of the crankshaft.
6. compressor according to any one of claim 1 to 3, wherein
The electrode is the consistent rectangular plate-like of axial direction of short side direction Yu the crankshaft.
7. compressor according to any one of claim 1 to 3, wherein
The electrode is the cylindrical shape of the both ends open of length direction.
8. compressor according to any one of claim 1 to 3, wherein
The electrode is in arc-shaped bend along the direction of rotation of the crankshaft.
9. compressor according to any one of claim 1 to 3, wherein
The liquid level sensor is set at least one position of the inner wall of the container.
10. compressor according to any one of claim 1 to 3, wherein
The liquid level sensor is set to two positions of the inner wall of the container or more on the direction of rotation of the crankshaft.
11. a kind of refrigerating circulatory device, wherein have:
Compressor described in any one of claims 1 to 10；And
Whether controller, the controller reach the benchmark height using the liquid level that the liquid level sensor detects the mixed liquor
Degree, and the operating of the compressor is controlled according to testing result.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/054308 WO2017141322A1 (en) | 2016-02-15 | 2016-02-15 | Compressor and refrigeration cycle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108700054A CN108700054A (en) | 2018-10-23 |
| CN108700054B true CN108700054B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201680072660.8A Active CN108700054B (en) | 2016-02-15 | 2016-02-15 | Compressor and refrigerating circulatory device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP6444544B2 (en) |
| KR (1) | KR102022848B1 (en) |
| CN (1) | CN108700054B (en) |
| CZ (1) | CZ308987B6 (en) |
| WO (1) | WO2017141322A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB201901890D0 (en) * | 2019-02-11 | 2019-04-03 | Mexichem Fluor Sa De Cv | Compositions |
| JP7265894B2 (en) * | 2019-03-11 | 2023-04-27 | 三菱重工サーマルシステムズ株式会社 | Oil sensor unit and compressor |
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| JPH09113476A (en) * | 1995-10-18 | 1997-05-02 | Idemitsu Kosan Co Ltd | Controller and control method for refrigerant compressor |
| JPH09178689A (en) * | 1995-12-27 | 1997-07-11 | Daikin Ind Ltd | Oil detector for fluid machine |
| CN201013579Y (en) * | 2007-03-01 | 2008-01-30 | 无锡力源压缩机有限公司 | Controller for PLC controlling medium-pressure compressor oil sit |
| JP2015001191A (en) * | 2013-06-14 | 2015-01-05 | ダイキン工業株式会社 | Oil level detecting device for compressor |
| CN104792387A (en) * | 2014-01-17 | 2015-07-22 | Lg电子株式会社 | Separated type liquid level sensor and compressor with liquid level sensor |
| CN204831468U (en) * | 2015-07-21 | 2015-12-02 | 上海日立电器有限公司 | Compressor and level sensor thereof |
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| JPH0454417A (en) | 1990-06-22 | 1992-02-21 | Toshiba Corp | Liquid level detecting device for compressor |
| JP2006029160A (en) * | 2004-07-14 | 2006-02-02 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| JP2009138693A (en) * | 2007-12-10 | 2009-06-25 | Mitsubishi Electric Corp | Hermetic compressor |
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2016
- 2016-02-15 WO PCT/JP2016/054308 patent/WO2017141322A1/en active Application Filing
- 2016-02-15 JP JP2017567588A patent/JP6444544B2/en active Active
- 2016-02-15 CZ CZ2018366A patent/CZ308987B6/en unknown
- 2016-02-15 KR KR1020187022346A patent/KR102022848B1/en active IP Right Grant
- 2016-02-15 CN CN201680072660.8A patent/CN108700054B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09113476A (en) * | 1995-10-18 | 1997-05-02 | Idemitsu Kosan Co Ltd | Controller and control method for refrigerant compressor |
| JPH09178689A (en) * | 1995-12-27 | 1997-07-11 | Daikin Ind Ltd | Oil detector for fluid machine |
| CN201013579Y (en) * | 2007-03-01 | 2008-01-30 | 无锡力源压缩机有限公司 | Controller for PLC controlling medium-pressure compressor oil sit |
| JP2015001191A (en) * | 2013-06-14 | 2015-01-05 | ダイキン工業株式会社 | Oil level detecting device for compressor |
| CN104792387A (en) * | 2014-01-17 | 2015-07-22 | Lg电子株式会社 | Separated type liquid level sensor and compressor with liquid level sensor |
| CN204831468U (en) * | 2015-07-21 | 2015-12-02 | 上海日立电器有限公司 | Compressor and level sensor thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108700054A (en) | 2018-10-23 |
| KR102022848B1 (en) | 2019-09-23 |
| CZ2018366A3 (en) | 2018-08-29 |
| KR20180103943A (en) | 2018-09-19 |
| JP6444544B2 (en) | 2018-12-26 |
| WO2017141322A1 (en) | 2017-08-24 |
| JPWO2017141322A1 (en) | 2018-04-26 |
| CZ308987B6 (en) | 2021-11-10 |
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