CN106286299A - Low back pressure horizontal compressor and refrigeration system - Google Patents
Low back pressure horizontal compressor and refrigeration system Download PDFInfo
- Publication number
- CN106286299A CN106286299A CN201610971187.9A CN201610971187A CN106286299A CN 106286299 A CN106286299 A CN 106286299A CN 201610971187 A CN201610971187 A CN 201610971187A CN 106286299 A CN106286299 A CN 106286299A
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- China
- Prior art keywords
- housing
- back pressure
- low back
- bent axle
- compression mechanism
- Prior art date
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Classifications
-
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with or adaptation to specific driving engines or motors
-
- 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
-
- 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
- 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
- F04C29/023—Lubricant distribution through a hollow driving shaft
-
- 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
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/14—Features relating to lubrication
-
- 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
- F04C2240/00—Components
- F04C2240/60—Shafts
- F04C2240/601—Shaft flexion
Abstract
The present invention discloses a kind of low back pressure horizontal compressor and refrigeration system.Compressor includes: housing, and housing is provided with suction nozzle and exhaustor, and suction nozzle connects with in housing, and the bottom of housing is provided with low pressure oil sump；Motor, motor is located in housing；Compression mechanism, compression mechanism is located in housing, compression mechanism includes two cylinders, two fitted bearings, two cover plates and bent axle, the side away from each other of two cylinders is respectively equipped with a fitted bearing, the side toward each other of two cylinders is respectively equipped with a cover plate, each fitted bearing is provided with the air entry connected with suction nozzle, bent axle and two fitted bearings coordinate and the rotor engagement of bent axle and motor, two fitted bearings are connected to limit a discharge chamber closed by retainer, the air vent of each cylinder connects with discharge chamber, exhaustor extend in discharge chamber.The low back pressure horizontal compressor of the present invention, simple in construction, compact.
Description
Technical field
The present invention relates to refrigeration technology field, especially relate to a kind of low back pressure horizontal compressor and refrigeration system.
Background technology
Compressor is divided into low back pressure compressor and high back pressure compressor according to the pressure in housing.
Owing to the case temperature of high back pressure compressor is higher, this makes the use of high back pressure compressor limited.
Low back pressure compressor such as uses the low back pressure compressor of carbon-hydrogen refrigerant, and its enclosure interior is pressure of inspiration(Pi), this
Making low back pressure compressor have coolant low with the dissolubility of refrigerator oil, coolant injection amount is few, and it is excellent that the temperature of housing is relatively low etc.
Point, low back pressure compressor applied widely.But the low back pressure compressor structure in correlation technique is complicated, the compactest, and
During compressor operating, vibrating noise is big.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the present invention carries
Going out a kind of low back pressure horizontal compressor, this compressor arrangement is simple, compact.
The present invention also proposes a kind of refrigeration system, including above-mentioned low back pressure horizontal compressor.
Low back pressure horizontal compressor according to embodiments of the present invention, including: housing, described housing is provided with suction nozzle and row
Trachea, described suction nozzle connects with in described housing, and the bottom of described housing is provided with low pressure oil sump；Motor, described motor is located at
In described housing；Compression mechanism, described compression mechanism is located in described housing, described compression mechanism include two cylinders, two
Fitted bearing, two cover plates and bent axle, the side away from each other of said two cylinder is respectively equipped with a described fitted bearing,
The side toward each other of said two cylinder is respectively equipped with a described cover plate, and each described fitted bearing is provided with described
The air entry of suction nozzle connection, described bent axle coordinates with two fitted bearings and described bent axle and the rotor engagement of described motor,
Said two fitted bearing by retainer be connected with limit one close discharge chamber, the air vent of each described cylinder with
Described discharge chamber connects, and described exhaustor extend in described discharge chamber.
Low back pressure horizontal compressor according to embodiments of the present invention, by making suction nozzle connect with in housing, and at two
The side away from each other of cylinder is respectively provided with a fitted bearing, and is respectively provided with in the side toward each other of two cylinders
One cover plate, and the air entry connected with suction nozzle is set on each fitted bearing, and make two fitted bearings by protecting
Hold frame to be connected to limit a discharge chamber closed, make the air vent of each cylinder connect with discharge chamber simultaneously, and by aerofluxus
Pipe extend in discharge chamber, thus realizes arranging the purpose of the compression mechanism of the discharge chamber with high pressure in the housing of low pressure,
The most not only can make the simple in construction of compressor, compact, when compressor operating, be conducive to weakening the vibration of compressor, fall
Low noise, the problem efficiently solving slide plate back pressure, and also this low back pressure horizontal compressor is because its case temperature is low, coolant injection
The features such as amount is few, have wide range of applications.
According to some embodiments of the present invention, in described discharge chamber, it is contained with lubricating oil.
According to some embodiments of the present invention, described suction nozzle be positioned at described motor away from described compression mechanism one
Side.
According to some embodiments of the present invention, being provided with centre bore in described bent axle, described bent axle is provided with multiple radial hole,
Each described radial hole connects with described centre bore, and described centre bore is connected with described low pressure oil sump by fuel feed pump, Mei Gesuo
State fitted bearing to be correspondingly arranged with radial hole at least one described.
Specifically, at least one described fitted bearing is provided with and the oil leak hole of corresponding described air entry connection, described
The one end open of oil leak hole is located on the internal perisporium of corresponding fitted bearing.
Alternatively, the span of the diameter of described oil leak hole is Ф 1mm-Ф 3mm.
Specifically, the side away from described compression mechanism of described rotor is provided with fan, and described fan is same with described rotor
Step rotates, and the lubricating oil that described fan is rotated such that in described low pressure oil sump enters into described centre bore by described fuel feed pump
In.
Specifically, the first refrigerant passage, described compression mechanism are limited between the internal perisporium of described motor and described housing
And it is provided with the second refrigerant passage between the inner roof wall of described housing.
Specifically, the circulation area of described first refrigerant passage is SOn electricity, the circulation area of described second refrigerant passage is
SPress, wherein SPress>1.5SOn electricity。
According to some embodiments of the present invention, between periphery wall and the interior diapire of described housing of described motor, it is provided with first
Oil flow passage, is provided with the second oil flow passage between described compression mechanism and the interior diapire of described housing.
Specifically, the circulation area of described first oil flow passage is SUnder electricity, the circulation area of described second oil flow passage
For SPressure, wherein SPressure>1.5SUnder electricity。
Refrigeration system according to embodiments of the present invention, including above-mentioned low back pressure horizontal compressor.
Refrigeration system according to embodiments of the present invention, by arranging above-mentioned low back pressure horizontal compressor, simple in construction.
Accompanying drawing explanation
Fig. 1 is the structural representation of low back pressure horizontal compressor according to some embodiments of the invention；
Fig. 2 is the partial schematic diagram according to the low back pressure horizontal compressor shown in Fig. 1；
Fig. 3 is fuel feed pump and the connection signal of oil cap of low back pressure horizontal compressor according to some embodiments of the invention
Figure.
Reference:
Compressor 100；
Housing 1；Suction nozzle 11；Exhaustor 12；Low pressure oil sump a；
Motor 2；Rotor 21；Stator 22；
Cylinder 31a, 31b；Fitted bearing 32a, 32b；Air entry 322a, 322b；Oil leak hole 321；Cover plate 33a, 33b；Bent
Axle 34；Centre bore 341；Radial hole 342；Rolling bearing 35a, 35b；
Retainer 4；Discharge chamber 41；First refrigerant passage 5；Second refrigerant passage 6；First oil flow passage 7；Second oil stream
Dynamic passage 8；Fan 9；Fuel feed pump 10；Oil cap 101.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings.Below with reference to
The embodiment that accompanying drawing describes is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " length ", " width ", " thickness ",
On " ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward ", " axially ", " radially ",
Deng instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description the present invention with
Simplify and describe rather than indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration
And operation, therefore it is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two, three
Individual etc., unless otherwise expressly limited specifically.
Below with reference to Fig. 1-Fig. 3, low back pressure horizontal compressor 100 according to embodiments of the present invention, this compressor 100 are described
Can apply in the refrigeration system of such as single cooling system or heat pump etc..
With reference to shown in Fig. 1, low back pressure horizontal compressor 100 according to embodiments of the present invention can include housing 1, compressor
Structure and motor 2 etc..Specifically, when motor 2 and compression mechanism are located in housing 1, three connections will can be divided in housing 1
Chamber.Such as, the P1 chamber between the right side wall of motor 2 and housing 1 as shown in Figure 1, it is positioned at motor 2 and compression mechanism
Between P2 chamber and compression mechanism and the left side wall of housing 1 between P3 chamber.Herein it should be noted that " left "
" right " is schematically illustrating with reference to the accompanying drawings, cannot function as a kind of restriction to the present invention herein.
With reference to shown in Fig. 1, housing 1 can use split-type structural, and the most in certain embodiments, housing 1 is the most permissible
Being divided into three parts, i.e. main housing portion and two end shell body portion, main housing portion is it is so structured that annular, and they are axial two years old
End opens wide, and two end housings can be separately fixed at the two ends of main housing portion, and closes main casing, thus main housing portion
And two end shell body portion constitute a shell structure closed, main housing portion can use with end shell body portion and weld
Mode fix, but be not limited to this.
As it is shown in figure 1, housing 1 inside is located at by compression mechanism and motor 2, the bottom of housing 1 is provided with low pressure oil sump a, compression
Mechanism is the core component of low back pressure horizontal compressor 100, and it is for being compressed the coolant in compressor 100, in compression
When machine 100 works, the lubricating oil in low pressure oil sump a can play the effect to compression mechanism lubrication, thus reduces abrasion.
Specifically, housing 1 is provided with suction nozzle 11 and exhaustor 12, and suction nozzle 11 connects in housing 1.When low back pressure crouches
Formula compressor 100 is with time in refrigeration systems, and in refrigeration system, the coolant after heat exchange can enter in housing 1 from suction nozzle 11,
After the compression of coolant compressed mechanism, discharge from exhaustor 12.
As it is shown in figure 1, compression mechanism includes two cylinder 31a, 31b, two fitted bearing 32a, 32b, two cover plates
33a, 33b and bent axle 34.For low back pressure horizontal compressor 100, the central axis of its bent axle 34 is with horizontal direction substantially
It is arranged in parallel.
Specifically, the side away from each other of two cylinders 31a, 31b is respectively equipped with fitted bearing 32a, a 32b, and two
The side toward each other of individual cylinder 31a, 31b is respectively equipped with cover plate 33a, a 33b, and each fitted bearing 32a, 32b set
There is air entry 322a, the 322b connected with suction nozzle 11.Such as, as it is shown in figure 1, two cylinders 31a, 31b in the lateral direction
Interval is arranged, and the left side of the cylinder 31b on the left side is provided with a fitted bearing 32b and right side is provided with a cover plate 33b, this fitted shaft
Hold 32b and be provided with the air entry 322b connected with suction nozzle 11, enter into the coolant in housing 1 from suction nozzle 11 and can pass through this suction
QI KOU 322b enters in the cylinder 31b on the left side；The left side of the cylinder 31a on the right is provided with a cover plate 33a and right side is provided with one
Individual fitted bearing 32a, this fitted bearing 32a are provided with the air entry 322a connected with suction nozzle 11, enter into from suction nozzle 11
Coolant in housing 1 can be by the cylinder 31a on the right of this air entry 322a entrance.
Bent axle 34 coordinates with two fitted bearings 32a, 32b.Such as, as it is shown in figure 1, the left end of bent axle 34 sequentially passes through and joins
Sympodium holds 32a, cylinder 31a, cover plate 33a, cover plate 33b, cylinder 31b and fitted bearing 32b.Motor 2 includes rotor 21 and stator
22, bent axle 34 coordinates with the rotor 21 of motor 2, and when motor 2 rotates, the rotor 21 of motor 2 can drive bent axle 34 to rotate, bent axle
34 can realize being compressed the coolant in two cylinders 31a, 31b when rotating.Herein it should be noted that compressor 100
Operation principle as it is known to those skilled in the art that and therefore repeated no more.
As it is shown in figure 1, two fitted bearings 32a, 32b are connected to limit a discharge chamber closed by retainer 4
41, the air vent of each cylinder 31a, 31b connects with discharge chamber 41, and exhaustor 12 extend in discharge chamber 41, such as such as Fig. 1 institute
Showing, exhaustor 12 extend in discharge chamber 41 through housing 1 and retainer 4.Thus, cold after two cylinders 31a, 31b compression
Matchmaker, can air vent from two cylinders 31a, 31b be drained in discharge chamber 41 respectively, and coolant discharges compression from exhaustor 12 subsequently
Machine 100, thus discharge chamber 41 is high pressure chest.
Specifically, each air vent is arranged on cover plate 33a, 33b corresponding with each cylinder 31a, 31b.
It should be noted that compression mechanism also includes the structures such as piston, slide plate, vane slot, other structure of compression mechanism
Be as it is known to those skilled in the art that and the most no longer described in detail.
Low back pressure horizontal compressor 100 according to embodiments of the present invention, by making suction nozzle 11 connect in housing 1, and
Be respectively provided with fitted bearing 32a, a 32b in the side away from each other of two cylinders 31a, 31b, and two cylinder 31a,
The side toward each other of 31b is respectively provided with cover plate 33a, a 33b, and arranges on each fitted bearing 32a, 32b and inhale
Air entry 322a, 322b of trachea 11 connection, and two fitted bearings 32a, 32b are connected by retainer 4 to limit
One discharge chamber 41 closed, makes the air vent of each cylinder 31a, 31b connect with discharge chamber 41 simultaneously, and is stretched by exhaustor 12
Enter in discharge chamber 41, thus realize arranging the purpose of the compression mechanism of the discharge chamber 41 with high pressure in the housing 1 of low pressure,
The most not only can make the simple in construction of compressor 100, compact, when compressor 100 works, be conducive to weakening compressor 100
Vibration, reduce noise, the problem efficiently solving slide plate back pressure, and this low back pressure horizontal compressor 100 is because of its housing 1 temperature
Spend the features such as low, coolant injection amount is few, have wide range of applications.
Specifically, compression mechanism also includes rolling bearing 35a, 35b, at least one fitted bearing 32a, 32b and bent axle 34
Between be provided with the part not setting rolling bearing 35a, 35b and the bent axle 34 of rolling bearing 35a, 35b and this fitted bearing 32a, 32b
It is slidably matched.Thus, by making to utilize between at least one fitted bearing 32a, 32b and bent axle 34 rolling bearing 35a, 35b
Roll and coordinate and utilize the part not setting rolling bearing 35a, 35b of this fitted bearing 32a, 32b to be slidably matched with bent axle 34, from
And be conducive to improving the sealing between fitted bearing 32a, 32b and bent axle 34.Specifically, as it is shown in figure 1, fitted bearing 32a,
The part not setting rolling bearing 35a, 35b of 32b is arranged adjacent to cover plate 33a, 33b.Preferably, as it is shown in figure 1, rolling bearing
35a, 35b are located between the axle journal of fitted bearing 32a, 32b and bent axle 34.
Further, as it is shown in figure 1, each fitted bearing 32a, 32b and and bent axle 34 between be equipped with rolling bearing
35a、35b.Thus be conducive to improving reliability when bent axle 34 rotates.
Specifically, being contained with lubricating oil in discharge chamber 41, when compressor 100 works, the lubricating oil in discharge chamber 41 can
Utilize discharge chamber 41 and the pressure reduction in housing 1, penetrate into the part not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b
And between bent axle 34, the two is lubricated when the two is slidably matched.
According to some embodiments of the present invention, suction nozzle 11 is positioned at the side away from compression mechanism of motor 2, hence into
Coolant in housing 1 can flow up from motor 2 to the side of compression mechanism, and enters into through air entry 322a, 322b
In corresponding cylinder 31a, 31b.
In some embodiments of the invention, being provided with centre bore 341 in bent axle 34, centre bore 341 is axial bent axle 34
Upper extension, bent axle 34 is provided with multiple radial hole 342, and each radial hole 342 connects with centre bore 341, and centre bore 341 is by supplying
Oil pipe 10 connects with low pressure oil sump a, and each fitted bearing 32a, 32b are correspondingly arranged with at least one radial hole 342, consequently facilitating
Lubricating oil in low pressure oil sump a enters in the centre bore 341 of bent axle 34 by fuel feed pump 10, the lubricating oil in centre bore 341
Rolling bearing 35a, 35b between fitted bearing 32a, 32b and bent axle 34 can be flowed to through radial hole 342, thus to rolling
Dynamic bearing 35a, 35b are lubricated.So, be conducive to improving the lubricant effect to rolling bearing 35a, 35b.
Preferably, as it is shown in figure 1, radial hole 342 is two, the corresponding radial hole of each fitted bearing 32a, 32b
342。
Specifically, with reference to shown in 1, at least one fitted bearing 32a, 32b are provided with and corresponding air entry 322a, 322b
The oil leak hole 321 of connection, the one end open of oil leak hole 321 is located on the internal perisporium of corresponding fitted bearing 32a, 32b.Thus,
By making oil leak hole 321 be correspondingly arranged with air entry 322a, 322b, from the lubricating oil of oil leak hole 321 discharge such as to rolling
The lubricating oil that bearing 35a, 35b are lubricated can enter in corresponding cylinder 31a, 31b with air-breathing at least partially, from
And realize absorbing gas belt oil purpose, in order to the lubricating oil in cylinder 31a, 31b when cylinder 31a, 31b work to cylinder 31a,
Dependency structure in 31b such as piston is lubricated.
Preferably, as it is shown in figure 1, be equipped with on each fitted bearing 32a, 32b with corresponding air entry 322a, 322b even
Logical oil leak hole 321.
It is understood that the size of the diameter of oil leak hole 321, relevant with the number of absorbing gas belt oil mass.Alternatively, draining
The span of the diameter in hole 321 is Ф 1mm-Ф 3mm, thus, simple and reliable.
Further, the side away from compression mechanism of rotor 21 is provided with fan 9, fan 9 and rotor 21 synchronous axial system, wind
The lubricating oil that fan 9 is rotated such that in low pressure oil sump a is entered in centre bore 341 by fuel feed pump 10.Such as, as it is shown in figure 1,
Suction nozzle 11 be positioned at motor 2 away from compression mechanism side, fuel feed pump 10 be positioned at housing 1 away from the one of suction nozzle 11
Side, when fan 9 rotates with rotor 21, can produce certain negative pressure near fan 9, thus the lubricating oil in low pressure oil sump a
Can be in fuel feed pump 10 enters into centre bore 341.
In some embodiments of the invention, the first oil flowing it is provided with between periphery wall and the interior diapire of housing 1 of motor 2
Passage 7, the circulation area of the first oil flow passage 7 is SUnder electricity, between compression mechanism and the interior diapire of housing 1, it is provided with the second oil stream
Dynamic passage 8, the circulation area of the second oil flow passage 8 is SPressure, wherein SPressure>1.5SUnder electricity.Consequently facilitating lubricating oil is at housing 1
Circulation between the diverse location of bottom.
Such as, it is provided with above-mentioned centre bore 341 when bent axle 34 and above-mentioned centre bore 341 passes through in the axial direction of bent axle 34
Wearing bent axle 34, when fuel feed pump 10 is connected with one end away from motor 2 of centre bore 341, the lubricating oil in low pressure oil sump a can pass through
Fuel feed pump 10 enters in centre bore 341, and a part of lubricating oil in centre bore 341 can flow to the axis of rolling through radial hole 342
Holding 35a, 35b to be lubricated rolling bearing 35a, 35b, another part lubricating oil in centre bore 341 is in centre bore 341
After outflow, can flow to the bottom of the housing 1 of the side of neighbouring motor 2, this parts of lubricating oil sequentially passes through the first oil flow passage 7
Flow back into the bottom of the housing 1 of neighbouring fuel feed pump 10 with the second oil flow passage 8, this parts of lubricating oil is further across fuel feed pump
10 flow to centre bore 341, thus are formed oil circulation.
According to some embodiments of the present invention, between the internal perisporium of motor 2 and housing 1, limit the first refrigerant passage 5, the
The circulation area of one refrigerant passage 5 is SOn electricity, compress and between mechanism and the inner roof wall of housing 1, be provided with the second refrigerant passage 6, second
The circulation area of refrigerant passage 6 is SPress, wherein SPress>1.5SOn electricity.Enter into the coolant in housing 1 from suction nozzle 11, can pass through
First refrigerant passage 5 flows to P2 chamber from P1 chamber, then passes through the second refrigerant passage 6 and flows to P3 chamber from P2 chamber, cold
In the flow process of matchmaker, by making SPress>1.5SOn electricity, advantageously ensure that the pressure of P2 chamber and P3 chamber is generally equalized, thus
Ensure that the pressure at two air entries 322a, 322b is equal, and then advantageously ensure that the air-breathing entering into two cylinders 31a, 31b
Measure identical.
It is understood that in housing 1, the pressure of P2 chamber and P3 chamber is generally equalized, and simultaneously less than P1 chamber
In pressure, so so that the oil level of lubricating oil at P2 chamber and P3 chamber is higher than P1 chamber, thus the most right
The lubrication of compression mechanism.
Alternatively, the difference of the pressure in P1 chamber and the pressure in P2 chamber is typically between 200～400Pa.
In some embodiments of the invention, as in figure 2 it is shown, same fitted bearing 32a, 32b arrange rolling bearing
The a length of L2 of the part that a length of L1 of the part of 35a, 35b is slidably matched with bent axle 34, bearing module M=L1/L2, L1
Being millimeter with the unit of L2, the span of bearing module M is 1-4.It is to say, the thickness of rolling bearing 35a, 35b is
L1, a length of L2 of the part being slidably matched with bent axle 34 of fitted bearing 32a, 32b, bearing module M=L1/L2, bearing system
The span of number M is 1-4.Thus, the span by making bearing module M is that 1-4 is to optimize fitted bearing 32a, 32b
The fit dimension and the part not setting described rolling bearing 35a, 35b of fitted bearing 32a, 32b coordinated is rolled with bent axle 34
With the fit dimension being slidably matched of bent axle 34, be conducive to improving the sealing between fitted bearing 32a, 32b and bent axle 34.
Specifically, the part being slidably matched with bent axle 34 of fitted bearing 32a, 32b a length of L2, fitted bearing 32a,
32b's and bent axle 34 part and the bent axle 34 that are slidably matched between radial clearance be Δ A, its unit is μm, lubrication rates P=Δ
A/L2, wherein the span of lubrication rates is 0.3～1.2, and the unit of P is μm/mm.Thus do not affecting the property of compressor 100
On the premise of energy, it is ensured that the lubricating oil in discharge chamber 41 utilizes discharge chamber 41 and the pressure reduction in housing 1, penetrates into fitted bearing
The two is entered when the two is slidably matched between the part not setting rolling bearing 35a, 35b and the bent axle 34 of 32a, 32b
Row lubrication, improves lubricant effect.
In some embodiments of the invention, between each fitted bearing 32a, 32b and retainer 4, it is equipped with sealing
Circle, thus realize the positive sealing to discharge chamber 41.
Alternatively, low back pressure horizontal compressor 100 also includes that deafener, each cover plate 33a, 33b are provided with described noise reduction
Device, the coolant in cylinder 31a, 31b can be discharged to deafener from the air vent being positioned at dividing plate, and arrange to row through deafener
Air cavity 41.
Specifically he, as shown in figures 1 and 3, be provided with oil cap 101 in one end away from motor 2 of bent axle 34, and fuel feed pump 10 is worn
Cross oil cap 101 to connect with centre bore 341 and low pressure oil sump a respectively.
Below with reference to Fig. 1-Fig. 2, the structure of the low back pressure horizontal compressor 100 of one specific embodiment of the present invention is carried out
Describe in detail.
As it is shown in figure 1, the low back pressure horizontal compressor 100 of the present embodiment includes housing 1, compression mechanism and motor 2.
Specifically, when motor 2 and compression mechanism are located in housing 1, the chamber of three connections will can be divided in housing 1
Room.The P1 chamber between the right side wall of motor 2 and housing 1 as shown in Figure 1, between motor 2 and compression mechanism
P2 chamber and the P3 chamber between compression mechanism and the left side wall of housing 1.
As it is shown in figure 1, housing 1 inside is located at by compression mechanism and motor 2, the bottom of housing 1 is provided with low pressure oil sump a.Motor 2
Periphery wall and the interior diapire of housing 1 between be provided with the first oil flow passage 7, set between compression mechanism and the interior diapire of housing 1
There is the second oil flow passage 8, between the internal perisporium of motor 2 and housing 1, limit the first refrigerant passage 5, compression mechanism and housing 1
Inner roof wall between be provided with the second refrigerant passage 6.
Housing 1 is provided with suction nozzle 11 and exhaustor 12, and suction nozzle 11 is positioned at the side away from compression mechanism of motor 2 i.e.
Suction nozzle 11 is located on the right side wall of housing 1, and suction nozzle 11 connects in housing 1.When low back pressure horizontal compressor 100 is used in system
Time in cooling system, in refrigeration system, the coolant after heat exchange can enter in housing 1 from suction nozzle 11, and the compressed mechanism of coolant compresses
After, discharge from exhaustor 12.
As it is shown in figure 1, compression mechanism includes two cylinder 31a, 31b, two fitted bearing 32a, 32b, two cover plates
33a, 33b, two rolling bearings 35a, 35b and bent axle 34.
As it is shown in figure 1, two cylinders 31a, 31b are spaced setting in the lateral direction, the left side of the cylinder 31b on the left side is provided with
One fitted bearing 32b and right side are provided with a cover plate 33b, this fitted bearing 32b and are provided with the air-breathing connected with suction nozzle 11
Mouth 322b, entering into the coolant in housing 1 from suction nozzle 11 can be in this air entry 322b enters into the cylinder 31b on the left side；
The left side of the cylinder 31a on the right is provided with a cover plate 33a and right side is provided with a fitted bearing 32a, and this fitted bearing 32a sets
Having the air entry 322a connected with suction nozzle 11, entering into the coolant in housing 1 from suction nozzle 11 can be by this air entry 322a
In cylinder 31a on the right of entrance.
As it is shown in figure 1, the left end of bent axle 34 sequentially passes through fitted bearing 32a, cylinder 31a, cover plate 33a, cover plate 33b, gas
Cylinder 31b and fitted bearing 32b.Bent axle 34 coordinates with the rotor 21 of motor 2, and when motor 2 rotates, the rotor 21 of motor 2 can drive
Dynamic crankshaft 34 rotates, and can realize being compressed the coolant in two cylinders 31a, 31b when bent axle 34 rotates.
As it is shown in figure 1, two fitted bearings 32a, 32b are connected to limit a discharge chamber closed by retainer 4
41, each cylinder 31a, 31b are connected with discharge chamber 41 by the air vent being positioned on cover plate 33a, 33b, and exhaustor 12 is through shell
Body 1 and retainer 4 extend in discharge chamber 41.The bottom of discharge chamber 41 is contained with lubricating oil.
Specifically, be provided with between axle journal and the bent axle 34 of each fitted bearing 32a, 32b described rolling bearing 35a, 35b and
The part not setting rolling bearing 35a, 35b of each fitted bearing 32a, 32b is slidably matched with bent axle 34.Specifically, such as Fig. 1 institute
Showing, the part not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b is arranged adjacent to cover plate 33a, 33b.Contain in discharge chamber 41
Being placed with lubricating oil, when compressor 100 works, the lubricating oil in discharge chamber 41 may utilize discharge chamber 41 and the pressure reduction in housing 1,
Penetrate between the part not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b and bent axle 34, to slide at the two
During cooperation, the two is lubricated.
Being provided with the centre bore 341 running through bent axle 34 in the axial direction in bent axle 34, bent axle 34 is provided with two radial holes 342,
Each radial hole 342 connects with centre bore 341, and the left end of centre bore 341 is connected with low pressure oil sump a by fuel feed pump 10, each
Fitted bearing 32a, 32b and a radial hole 342 are correspondingly arranged.Each fitted bearing 32a, 32b are provided with and corresponding air-breathing
The oil leak hole 321 of mouth 322a, 322b connection, the one end open of oil leak hole 321 is located at the inner circumferential of corresponding fitted bearing 32a, 32b
On wall.The span of the diameter of oil leak hole 321 is Ф 1mm-Ф 3mm, thus, simple and reliable.
The side away from compression mechanism of rotor 21 is provided with fan 9, fan 9 and rotor 21 synchronous axial system, at fan 9 with turning
When son 21 rotates, certain negative pressure can be produced near fan 9, thus the lubricating oil in low pressure oil sump a can be through fuel feed pump 10
Entering in centre bore 341, a part of lubricating oil in centre bore 341 can flow to rolling bearing 35a, 35b through radial hole 342
So that rolling bearing 35a, 35b are lubricated, after another part lubricating oil in centre bore 341 flows out in centre bore 341, can
Flowing to the bottom of the housing 1 of the side of neighbouring motor 2, this parts of lubricating oil sequentially passes through the first oil flow passage 7 and the second oil
Flow channel 8 flow back into the bottom of the housing 1 of neighbouring fuel feed pump 10, during this parts of lubricating oil flows to further across fuel feed pump 10
Central hole 341, thus formed oil circulation.
The circulation area of the first oil flow passage 7 is SUnder electricity, the circulation area of the second oil flow passage 8 is SPressure, wherein SPressure
>1.5SUnder electricity.Consequently facilitating the circulation that lubricating oil is between the diverse location of the bottom of housing 1.
The circulation area of the first refrigerant passage 5 is SOn electricity, between compression mechanism and the inner roof wall of housing 1, it is provided with the second coolant
Passage 6, the circulation area of the second refrigerant passage 6 is SPress, wherein SPress>1.5SOn electricity.From suction nozzle 11 enter in housing 1 cold
Matchmaker, can flow to P2 chamber through the first refrigerant passage 5 from P1 chamber, then passes through the second refrigerant passage 6 and flows to P3 from P2 chamber
Chamber, in the flow process of coolant, by making SPress>1.5SOn electricity, advantageously ensure that the pressure of P2 chamber and P3 chamber substantially
Equal, thus ensure that the pressure at two air entries 322a, 322b is equal, so advantageously ensure that enter into two cylinder 31a,
The inspiration capacity of 31b is identical.
It is understood that in housing 1, the pressure of P2 chamber and P3 chamber is generally equalized, and simultaneously less than P1 chamber
In pressure, so so that the oil level of lubricating oil at P2 chamber and P3 chamber is higher than P1 chamber, thus the most right
The lubrication of compression mechanism.
As in figure 2 it is shown, same fitted bearing 32a, 32b are arranged a length of L1 of the part of rolling bearing 35a, 35b,
With a length of L2 of the part that bent axle 34 is slidably matched, the unit of bearing module M=L1/L2, L1 and L2 is millimeter, bearing system
The span of number M is 1-4.
Radial clearance between part and bent axle 34 that fitted bearing 32a, 32b and bent axle 34 is slidably matched is Δ A, its
Unit is μm, lubrication rates P=Δ A/L2, and wherein the span of lubrication rates is 0.3～1.2, and the unit of P is μm/mm.Thus
On the premise of not affecting the performance of compressor 100, it is ensured that in the lubricating oil in discharge chamber 41 utilizes discharge chamber 41 and housing 1
Pressure reduction, penetrates between the part not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b and bent axle 34 to carry out at the two
When being slidably matched, the two is lubricated, improves lubricant effect.
Refrigeration system according to embodiments of the present invention, including above-mentioned compressor 100.
Refrigeration system according to embodiments of the present invention is by arranging above-mentioned compressor 100, simple in construction, compact.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " fixing " etc.
Term should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be that machinery connects
Connect, it is also possible to be electrical connection or each other can communication；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, permissible
It is connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For this area
For those of ordinary skill, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or spy
Point is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be in office
One or more embodiments or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be tied by art personnel
Close and combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is example
Property, it is impossible to being interpreted as limitation of the present invention, those of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, revises, replaces and modification.
Claims (12)
1. one kind low back pressure horizontal compressor, it is characterised in that including:
Housing, described housing is provided with suction nozzle and exhaustor, and described suction nozzle connects with in described housing, the end of described housing
Portion is provided with low pressure oil sump；
Motor, described motor is located in described housing；
Compression mechanism, described compression mechanism is located in described housing, and described compression mechanism includes two cylinders, two fitted shaft
Hold, two cover plates and bent axle, the side away from each other of said two cylinder is respectively equipped with a described fitted bearing, described two
The side toward each other of individual cylinder is respectively equipped with a described cover plate, and each described fitted bearing is provided with and described suction nozzle
The air entry of connection, described bent axle coordinates with two fitted bearings and described bent axle and the rotor engagement of described motor, and described two
Individual fitted bearing is connected to limit a discharge chamber closed, the air vent of each described cylinder and described row by retainer
Air cavity connects, and described exhaustor extend in described discharge chamber.
Low back pressure horizontal compressor the most according to claim 1, it is characterised in that be contained with lubrication in described discharge chamber
Oil.
Low back pressure horizontal compressor the most according to claim 1, it is characterised in that described suction nozzle is positioned at described motor
Side away from described compression mechanism.
Low back pressure horizontal compressor the most according to claim 1, it is characterised in that be provided with centre bore, institute in described bent axle
Stating bent axle and be provided with multiple radial hole, each described radial hole connects with described centre bore, described centre bore by fuel feed pump with
Described low pressure oil sump connects, and each described fitted bearing is correspondingly arranged with radial hole at least one described.
Low back pressure horizontal compressor the most according to claim 4, it is characterised in that set at least one described fitted bearing
Having and the oil leak hole of corresponding described air entry connection, the one end open of described oil leak hole is located at the inner circumferential of corresponding fitted bearing
On wall.
Low back pressure horizontal compressor the most according to claim 5, it is characterised in that the value model of the diameter of described oil leak hole
Enclose for Ф 1mm-Ф 3mm.
Low back pressure horizontal compressor the most according to claim 4, it is characterised in that described rotor away from described compressor
The side of structure is provided with fan, described fan and described rotor synchronous axial system, in described fan is rotated such that described low pressure oil sump
Lubricating oil entered in described centre bore by described fuel feed pump.
Low back pressure horizontal compressor the most according to claim 3, it is characterised in that described motor and the inner circumferential of described housing
Limit the first refrigerant passage between wall, between described compression mechanism and the inner roof wall of described housing, be provided with the second refrigerant passage.
Low back pressure horizontal compressor the most according to claim 8, it is characterised in that the circulating face of described first refrigerant passage
Amass as SOn electricity, the circulation area of described second refrigerant passage is SPress, wherein SPress>1.5SOn electricity。
10. according to the low back pressure horizontal compressor according to any one of claim 1-9, it is characterised in that outside described motor
Be provided with the first oil flow passage between perisporium and the interior diapire of described housing, the interior diapire of described compression mechanism and described housing it
Between be provided with the second oil flow passage.
11. low back pressure horizontal compressors according to claim 10, it is characterised in that the stream of described first oil flow passage
Logical area is SUnder electricity, the circulation area of described second oil flow passage is SPressure, wherein SPressure>1.5SUnder electricity。
12. 1 kinds of refrigeration systems, it is characterised in that include according to the low back pressure Horizontal type pressure according to any one of claim 1-11
Contracting machine.
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| CN201610971187.9A CN106286299B (en) | 2016-10-31 | 2016-10-31 | Low back pressure horizontal compressor and refrigeration system |
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| CN201610971187.9A CN106286299B (en) | 2016-10-31 | 2016-10-31 | Low back pressure horizontal compressor and refrigeration system |
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| CN106762657A (en) * | 2017-01-25 | 2017-05-31 | 珠海凌达压缩机有限公司 | Compressor bracket, compressor and electric automobile |
| CN106837804A (en) * | 2017-01-24 | 2017-06-13 | 广东美芝制冷设备有限公司 | Compressor |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106286299B (en) | 2018-03-16 |
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