CN206206164U - Low back pressure horizontal compressor and refrigeration system - Google Patents
Low back pressure horizontal compressor and refrigeration system Download PDFInfo
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- CN206206164U CN206206164U CN201621166199.6U CN201621166199U CN206206164U CN 206206164 U CN206206164 U CN 206206164U CN 201621166199 U CN201621166199 U CN 201621166199U CN 206206164 U CN206206164 U CN 206206164U
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- housing
- back pressure
- low back
- bent axle
- compression mechanism
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Abstract
The utility model discloses a kind of low back pressure horizontal compressor and refrigeration system.Compressor includes：Housing, housing is provided with air intake duct and blast pipe, and air intake duct is connected with 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 air intake duct, the rotor engagement of bent axle and two fitted bearings cooperations and bent axle and motor, two fitted bearings are connected to limit a discharge chamber for closing by retainer, the exhaust outlet of each cylinder is connected with discharge chamber, blast pipe is extend into discharge chamber.Low back pressure horizontal compressor of the present utility model, it is simple structure, compact.
Description
Technical field
The utility model is related to refrigeration technology field, more particularly, 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.
Because the case temperature of high back pressure compressor is higher, this causes that the use of high back pressure compressor is limited.
For example using the low back pressure compressor of carbon-hydrogen refrigerant, its enclosure interior is pressure of inspiration(Pi) to low back pressure compressor, this
So that low back pressure compressor has refrigerant low with the solubility of refrigerator oil, coolant injection amount is few, and the temperature of housing is more low excellent
Point, low back pressure compressor it is applied widely.But it is low back pressure compressor complex structure in correlation technique, not compact, and
Vibrating noise is big during compressor operating.
Utility model content
The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.Therefore, this reality
With a kind of low back pressure horizontal compressor of new proposition, the compressor arrangement is simple, compact.
The utility model also proposes a kind of refrigeration system, including above-mentioned low back pressure horizontal compressor.
According to the low back pressure horizontal compressor of the utility model embodiment, including：Housing, the housing is provided with air intake duct
And blast pipe, the air intake duct connects with the housing, and the bottom of the housing is provided with low pressure oil sump；Motor, the motor
It is located in the housing；Compression mechanism, the compression mechanism is located in the housing, the compression mechanism include two cylinders,
Two fitted bearings, two cover plates and bent axles, the side away from each other of described two cylinders is respectively equipped with a cooperation
Bearing, the side toward each other of described two cylinders is respectively equipped with a cover plate, and each described fitted bearing is provided with
The air entry connected with the air intake duct, the bent axle and two fitted bearings coordinate and the bent axle and the motor rotor
Coordinate, described two fitted bearings are connected to limit a discharge chamber for closing, the row of each cylinder by retainer
Gas port is connected with the discharge chamber, and the blast pipe is extend into the discharge chamber.
According to the low back pressure horizontal compressor of the utility model embodiment, connected with housing by making air intake duct, and
The side away from each other of two cylinders is respectively provided with a fitted bearing, and in two difference of side toward each other of cylinder
One cover plate, and the air entry that setting is connected with air intake duct on each fitted bearing are set, and cause that two fitted bearings lead to
Retainer is crossed to be connected to limit a discharge chamber for closing, while the exhaust outlet of each cylinder is connected with discharge chamber, and will
Blast pipe is extend into discharge chamber, so as to realize the mesh of the compression mechanism of discharge chamber of the setting with high pressure in the housing of low pressure
, so not only may be such that the simple structure of compressor, compact, in compressor operating, be conducive to weakening the vibration of compressor,
Noise is reduced, the problem of slide plate back pressure, and the low back pressure horizontal compressor is efficiently solved because its case temperature is low, refrigerant fills
The features such as fluence is few, has wide range of applications.
According to some embodiments of the present utility model, lubricating oil is contained with the discharge chamber.
According to some embodiments of the present utility model, the air intake duct be located at the motor away from the compression mechanism
Side.
According to some embodiments of the present utility model, centre bore is provided with the bent axle, the bent axle is provided with multiple footpaths
Xiang Kong, each described radial hole is connected with the centre bore, and the centre bore is connected by fuel feed pump with the low pressure oil sump, often
The individual fitted bearing is correspondingly arranged with radial hole described at least one.
Specifically, fitted bearing described at least one is provided with the oil leak hole connected with the corresponding air entry, 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 the oil leak hole is Ф 1mm- Ф 3mm.
Specifically, the side away from the compression mechanism of the rotor is provided with fan, and the fan is same with the rotor
Step is rotated, and the lubricating oil that the fan is rotated such that in the low pressure oil sump enters into the centre bore by the fuel feed pump
It is interior.
Specifically, the first refrigerant passage, the compression mechanism are limited between the internal perisporium of the motor and the housing
The second refrigerant passage is provided with and the inner roof wall of the housing between.
Specifically, the circulation area of first refrigerant passage is SOn electricity, the circulation area of second refrigerant passage is
SIn pressure, wherein SIn pressure>1.5SOn electricity。
According to some embodiments of the present utility model, it is provided between the periphery wall of the motor and the inner bottom wall of the housing
The second oil flow passage is provided between the inner bottom wall of the first oil flow passage, the compression mechanism and the housing.
Specifically, the circulation area of first oil flow passage is SUnder electricity, the circulation area of second oil flow passage
It is SPressure, wherein SPressure>1.5SUnder electricity。
According to the refrigeration system of the utility model embodiment, including above-mentioned low back pressure horizontal compressor.
According to the refrigeration system of the utility model embodiment, by setting above-mentioned low back pressure horizontal compressor, structure letter
It is single.
Brief description of the drawings
Fig. 1 is the structural representation of the low back pressure horizontal compressor according to the utility model some embodiments；
Fig. 2 is the partial schematic diagram of the low back pressure horizontal compressor according to Fig. 1；
Fig. 3 is that the connection of the fuel feed pump and oily cap of the low back pressure horizontal compressor according to the utility model some embodiments is shown
It is intended to.
Reference：
Compressor 100；
Housing 1；Air intake duct 11；Blast pipe 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；It is 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；Oily cap 101.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality
The limitation of type.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " length ", " width ", " thickness
Degree ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " axial direction ", " footpath
To ", etc. instruction orientation or position relationship be based on orientation shown in the drawings or position relationship, be for only for ease of description this reality
With new and simplified description, device or element rather than instruction or hint meaning must be with specific orientation, with specific
Azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " is meant that at least two, such as two
It is individual, three etc., unless otherwise expressly limited specifically.
The low back pressure horizontal compressor 100 according to the utility model embodiment, the compressor are described below with reference to Fig. 1-Fig. 3
In 100 refrigeration systems that can apply to single cooling system or heat pump etc..
Shown in reference picture 1, the low back pressure horizontal compressor 100 according to the utility model embodiment can include housing 1, pressure
Contracting mechanism and motor 2 etc..Specifically, when motor 2 and compression mechanism are located in housing 1, three companies will can be divided into housing 1
Logical chamber.For example, the P1 chambers between the right side wall of motor 2 and housing 1 as shown in Figure 1, positioned at motor 2 and compression
P2 chambers between mechanism and the P3 chambers between the left side wall of compression mechanism and housing 1.Herein it should be noted that
" left side " and " right side " is schematically illustrating with reference to the accompanying drawings, be cannot function as herein to a kind of limitation of the present utility model.
Shown in reference picture 1, housing 1 can use split-type structural, and for example in certain embodiments, housing 1 substantially can be with
It is divided into three parts, i.e. main housing portion and two end housing parts, main housing portion can be structured as annular, its axial direction two
End is opened wide, and two end housings can be separately fixed at the two ends of main housing portion, and closing main casing, so that main housing portion
And two end housing parts constitute a shell structure closed, main housing portion can be using welding with end housing parts
Mode fix, but not limited to this.
As shown in figure 1, compression mechanism and motor 2 are inside housing 1, 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 used to be compressed the refrigerant in compressor 100, in compression
When machine 100 works, the lubricating oil in low pressure oil sump a can play a part of to lubricate compression mechanism, so as to reduce abrasion.
Specifically, housing 1 is provided with air intake duct 11 and blast pipe 12, and air intake duct 11 is connected with housing 1.When low back pressure is sleeping
Formula compressor 100 is used when in refrigeration systems, and the refrigerant after being exchanged heat in refrigeration system can be entered into housing 1 from air intake duct 11,
After the compressed mechanism's compression of refrigerant, discharged from blast pipe 12.
As 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, two
The side toward each other of individual cylinder 31a, 31b is respectively equipped with cover plate 33a, a 33b, is set on each fitted bearing 32a, 32b
There are air entry 322a, the 322b connected with air intake duct 11.For example, as shown in figure 1, two cylinders 31a, 31b in the lateral direction
Interval setting, is provided with a fitted bearing 32b and right side is provided with a cover plate 33b, the fitted shaft on the left of the cylinder 31b on the left side
Hold 32b and be provided with the air entry 322b connected with air intake duct 11, the refrigerant entered into housing 1 from air intake duct 11 can pass through the suction
Gas port 322b is entered into the cylinder 31b on the left side；A cover plate 33a is provided with the left of the cylinder 31a on the right and right side is provided with one
Individual fitted bearing 32a, fitted bearing 32a is provided with the air entry 322a connected with air intake duct 11, is entered into from air intake duct 11
Refrigerant in housing 1 can be entered in the cylinder 31a on the right by air entry 322a.
Bent axle 34 and two fitted bearings 32a, 32b coordinate.For example, as shown in figure 1, the left end of bent axle 34 is sequentially passed through and matched somebody with somebody
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 is rotated, the rotor 21 of motor 2 can drive bent axle 34 to rotate, bent axle
34 can realize being compressed the refrigerant in two cylinders 31a, 31b when rotating.Herein it should be noted that compressor 100
Therefore operation principle by as it is known to those skilled in the art that repeat no more.
As shown in figure 1, two fitted bearings 32a, 32b are connected to limit a discharge chamber for closing by retainer 4
41, the exhaust outlet of each cylinder 31a, 31b is connected with discharge chamber 41, and blast pipe 12 is extend into discharge chamber 41, such as such as Fig. 1 institutes
Show, blast pipe 12 is extend into discharge chamber 41 through housing 1 and retainer 4.Thus, it is cold after two cylinder 31a, 31b compressions
Matchmaker, can be drained into discharge chamber 41 from the exhaust outlet of two cylinders 31a, 31b respectively, and subsequent refrigerant is discharged from blast pipe 12 and compressed
Machine 100, so that discharge chamber 41 is high pressure chest.
Specifically, each exhaust outlet is arranged on cover plate 33a, 33b corresponding with each cylinder 31a, 31b.
It should be noted that compression mechanism structure, the other structures of compression mechanism also including piston, slide plate, vane slot etc.
By as it is known to those skilled in the art that no longer describe in detail herein.
According to the low back pressure horizontal compressor 100 of the utility model embodiment, by making to connect in air intake duct 11 and housing 1
It is logical, and fitted bearing 32a, a 32b are respectively provided with the side away from each other of two cylinders 31a, 31b, and in two gas
The side toward each other of cylinder 31a, 31b is respectively provided with cover plate 33a, a 33b, and is set on each fitted bearing 32a, 32b
Put air entry 322a, the 322b connected with air intake duct 11, and cause two fitted bearings 32a, 32b by retainer 4 be connected with
A discharge chamber 41 for closing is limited, while the exhaust outlet of each cylinder 31a, 31b is connected with discharge chamber 41, and will exhaust
Pipe 12 is extend into discharge chamber 41, so as to realize being set in the housing 1 of low pressure the compression mechanism of the discharge chamber 41 with high pressure
Purpose, so not only may be such that the simple structure of compressor 100, compact, when compressor 100 works, be conducive to weakening and press
The vibration of contracting machine 100, reduction noise, efficiently solve the problem of slide plate back pressure, and the low back pressure horizontal compressor 100 because of it
The features such as temperature of housing 1 is low, coolant injection amount is few, has 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 for not setting rolling bearing 35a, 35b and the bent axle 34 of rolling bearing 35a, 35b and the fitted bearing 32a, 32b
It is slidably matched.Thus, by causing to utilize rolling bearing 35a, 35b between at least one fitted bearing 32a, 32b and bent axle 34
Roll and be slidably matched using the part for not setting rolling bearing 35a, 35b of the fitted bearing 32a, 32b and bent axle 34 with merging, from
And be conducive to improving the sealing between fitted bearing 32a, 32b and bent axle 34.Specifically, as shown in figure 1, fitted bearing 32a,
The part for not setting rolling bearing 35a, 35b of 32b is set adjacent to cover plate 33a, 33b.Preferably, as 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 shown in figure 1, each fitted bearing 32a, 32b and being equipped with rolling bearing and bent axle 34 between
35a、35b.So as to be conducive to improving reliability when bent axle 34 is rotated.
Specifically, lubricating oil is contained with discharge chamber 41, when compressor 100 works, the lubricating oil in discharge chamber 41 can
Using the pressure difference in discharge chamber 41 and housing 1, the part for not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b is penetrated into
Between bent axle 34, the two is lubricated with when the two is slidably matched.
According to some embodiments of the present utility model, air intake duct 11 is located at the side away from compression mechanism of motor 2, thus
The refrigerant entered into housing 1 can be flowed up in the side from motor 2 to compression mechanism, and be entered by air entry 322a, 322b
Enter in corresponding cylinder 31a, 31b.
In some embodiments of the present utility model, centre bore 341 is provided with bent axle 34, centre bore 341 is in bent axle 34
Axle is upwardly extended, and bent axle 34 is provided with multiple radial holes 342, and each radial hole 342 is connected with centre bore 341, and centre bore 341 leads to
Cross fuel feed pump 10 to be connected with low pressure oil sump a, each fitted bearing 32a, 32b is correspondingly arranged with least one radial hole 342, so that
The lubricating oil being easy in low pressure oil sump a is entered into the centre bore 341 of bent axle 34 by fuel feed pump 10, the profit in centre bore 341
Lubricating oil can flow to rolling bearing 35a, 35b for being located between fitted bearing 32a, 32b and bent axle 34 by radial hole 342, so that
Rolling bearing 35a, 35b are lubricated.So, be conducive to improving the lubricant effect to rolling bearing 35a, 35b.
Preferably, as shown in figure 1, radial hole 342 is two, each fitted bearing 32a, 32b one radial hole of correspondence
342。
Specifically, with reference to shown in 1, at least one fitted bearing 32a, 32b is 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 causing that oil leak hole 321 is correspondingly arranged with air entry 322a, 322b, the lubricating oil from the discharge of oil leak hole 321 is for example to rolling
At least a portion in the lubricating oil that bearing 35a, 35b are lubricated can be entered into corresponding cylinder 31a, 31b with air-breathing, 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 such as piston in 31b is lubricated.
Preferably, connect with corresponding air entry 322a, 322b as shown in figure 1, being equipped with each fitted bearing 32a, 32b
Logical oil leak hole 321.
It is understood that the size of the diameter of oil leak hole 321, the number with absorbing gas belt oil mass is relevant.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 the synchronous axial system of rotor 21, wind
The lubricating oil that fan 9 is rotated such that in low pressure oil sump a is entered into centre bore 341 by fuel feed pump 10.For example, as shown in figure 1,
Air intake duct 11 be located at motor 2 the side away from compression mechanism, fuel feed pump 10 be located at housing 1 in away from the one of air intake duct 11
Side, when fan 9 is rotated with rotor 21, can produce certain negative pressure, so that the lubricating oil in low pressure oil sump a near fan 9
Can be entered into centre bore 341 by fuel feed pump 10.
In some embodiments of the present utility model, the first oil is provided between the periphery wall of motor 2 and the inner bottom wall of housing 1
Flow channel 7, the circulation area of the first oil flow passage 7 is SUnder electricity, second is provided between compression mechanism and the inner bottom wall of housing 1
Oil flow passage 8, the circulation area of the second oil flow passage 8 is SPressure, wherein SPressure>1.5SUnder electricity.Consequently facilitating lubricating oil is in shell
Circulation between the diverse location of the bottom of body 1.
For example, when bent axle 34 is provided with above-mentioned centre bore 341 and above-mentioned centre bore 341 is passed through in the axial direction of bent axle 34
Bent axle 34 is worn, 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 is entered into centre bore 341, and a part of lubricating oil in centre bore 341 can flow to the axis of rolling by radial hole 342
Hold 35a, 35b to be lubricated with to rolling bearing 35a, 35b, another part lubricating oil in centre bore 341 is from centre bore 341
After outflow, the bottom of the housing 1 of the side of neighbouring motor 2 can be flowed to, the parts of lubricating oil sequentially passes through the first oil flow passage 7
With the bottom of the housing 1 that the second oil flow passage 8 flow back into neighbouring fuel feed pump 10, the parts of lubricating oil is further across fuel feed pump
10 flow to centre bore 341, so as to form oily circulation.
According to some embodiments of the present utility model, the first refrigerant passage is limited between motor 2 and the internal perisporium of housing 1
5, the circulation area of the first refrigerant passage 5 is SOn electricity, the second refrigerant passage 6 is provided between compression mechanism and the inner roof wall of housing 1,
The circulation area of the second refrigerant passage 6 is SIn pressure, wherein SIn pressure>1.5SOn electricity.From the refrigerant that air intake duct 11 is entered into housing 1, can
P2 chambers are flowed to from P1 chambers by the first refrigerant passage 5, the second refrigerant passage 6 are then passed through and is flowed to P3 chambers from P2 chambers,
In the flow process of refrigerant, by causing SIn pressure>1.5SOn electricity, advantageously ensure that the pressure of P2 chambers and P3 chambers is generally equalized,
It is equal so as to ensure the pressure at two air entries 322a, 322b, and then advantageously ensure that and enter into two cylinders 31a, 31b
Inspiratory capacity is identical.
It is understood that in housing 1, the pressure of P2 chambers and P3 chambers is generally equalized, and P1 chambers are less than simultaneously
Interior pressure, the oil level that can so cause the lubricating oil at P2 chambers and P3 chambers is higher than P1 chambers, right so as to be conducive to
The lubrication of compression mechanism.
Alternatively, the difference of the pressure in the pressure and P2 chambers in P1 chambers is general between 200~400Pa.
In some embodiments of the present utility model, as shown in Fig. 2 set in same fitted bearing 32a, 32b rolling
The length of the part of bearing 35a, 35b is that the length of part that L1 and bent axle 34 are slidably matched is L2, bearing module M=L1/L2,
The unit of L1 and L2 is millimeter, and the span of bearing module M is 1-4.That is, the thickness of rolling bearing 35a, 35b
It is L1, the length of the part being slidably matched with bent axle 34 of fitted bearing 32a, 32b is L2, bearing module M=L1/L2, bearing system
The span of number M is 1-4.Thus, by the way that to cause the span of bearing module M be 1-4 optimizing fitted bearing 32a, 32b
With the part for not setting described rolling bearing 35a, 35b that bent axle 34 rolls fit dimension and fitted bearing 32a, the 32b for coordinating
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 length of the part being slidably matched with bent axle 34 of fitted bearing 32a, 32b be L2, fitted bearing 32a,
Radial clearance between the part being slidably matched with bent axle 34 of 32b and bent axle 34 is Δ A, its unit for μm, lubrication rates P=Δs
The span of A/L2, wherein lubrication rates for 0.3~1.2, P unit for μm/mm.So as to not influence the property of compressor 100
On the premise of energy, it is ensured that the lubricating oil in discharge chamber 41 penetrates into fitted bearing using the pressure difference in discharge chamber 41 and housing 1
The two is entered with when the two is slidably matched between the part for not setting rolling bearing 35a, 35b of 32a, 32b and bent axle 34
Row lubrication, improves lubricant effect.
In some embodiments of the present utility model, it is equipped between each fitted bearing 32a, 32b and retainer 4 close
Seal, so as to realize the reliability sealing to discharge chamber 41.
Alternatively, low back pressure horizontal compressor 100 also includes muffler, and each cover plate 33a, 33b are provided with the noise reduction
Device, the refrigerant in cylinder 31a, 31b can be discharged in muffler from the exhaust outlet on dividing plate, and is arranged to row by muffler
Air cavity 41.
Specifically he, as shown in figures 1 and 3, oily cap 101 is provided with one end away from motor 2 of bent axle 34, and fuel feed pump 10 is worn
Oily cap 101 is crossed to be connected with centre bore 341 and low pressure oil sump a respectively.
Below with reference to Fig. 1-Fig. 2 to the structure of the low back pressure horizontal compressor 100 of one specific embodiment of the utility model
It is described in detail.
As 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, three chambers of connection can will be divided into housing 1
Room.P1 chambers between the right side wall of motor 2 and housing 1 as shown in Figure 1, between motor 2 and compression mechanism
P2 chambers and the P3 chambers between the left side wall of compression mechanism and housing 1.
As shown in figure 1, compression mechanism and motor 2 are inside housing 1, the bottom of housing 1 is provided with low pressure oil sump a.Motor 2
Periphery wall and the inner bottom wall of housing 1 between be provided with the first oil flow passage 7, set between compression mechanism and the inner bottom wall of housing 1
There is the second oil flow passage 8, the first refrigerant passage 5, compression mechanism and housing 1 are limited between motor 2 and the internal perisporium of housing 1
Inner roof wall between be provided with the second refrigerant passage 6.
Housing 1 is provided with air intake duct 11 and blast pipe 12, and the side away from compression mechanism that air intake duct 11 is located at motor 2 is
Air intake duct 11 is located on the right side wall of housing 1, and air intake duct 11 is connected with housing 1.When low back pressure horizontal compressor 100 is used in system
When in cooling system, the refrigerant after being exchanged heat in refrigeration system can be entered into housing 1 from air intake duct 11, the compressed mechanism's compression of refrigerant
Afterwards, discharged from blast pipe 12.
As 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 shown in figure 1, two cylinders 31a, 31b interval setting in the lateral direction, are provided with the left of the cylinder 31b on the left side
One fitted bearing 32b and right side is provided with a cover plate 33b, fitted bearing 32b is provided with the air-breathing connected with air intake duct 11
Mouth 322b, the refrigerant entered into housing 1 from air intake duct 11 can pass through in the cylinder 31b that air entry 322b enter into the left side；
A cover plate 33a is provided with the left of the cylinder 31a on the right and right side is provided with a fitted bearing 32a, set on fitted bearing 32a
There is the air entry 322a connected with air intake duct 11, the refrigerant entered into housing 1 from air intake duct 11 can be by air entry 322a
Into in the cylinder 31a on the right.
As 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 is rotated, the rotor 21 of motor 2 can drive
Dynamic crankshaft 34 is rotated, and bent axle 34 can be realized being compressed the refrigerant in two cylinders 31a, 31b when rotating.
As shown in figure 1, two fitted bearings 32a, 32b are connected to limit a discharge chamber for closing by retainer 4
41, each cylinder 31a, 31b is connected by the exhaust outlet on cover plate 33a, 33b with discharge chamber 41, and blast pipe 12 passes through shell
Body 1 and retainer 4 are extend into discharge chamber 41.The bottom of discharge chamber 41 is contained with lubricating oil.
Specifically, be provided between the axle journal and bent axle 34 of each fitted bearing 32a, 32b described rolling bearing 35a, 35b and
The part for not setting rolling bearing 35a, 35b of each fitted bearing 32a, 32b and bent axle 34 are slidably matched.Specifically, such as Fig. 1 institutes
Show, the part for not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b is set adjacent to cover plate 33a, 33b.Contained in discharge chamber 41
Lubricating oil is placed with, when compressor 100 works, the lubricating oil in discharge chamber 41 can utilize the pressure difference in discharge chamber 41 and housing 1,
Penetrate between the part for not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b and bent axle 34, line slip is entered with the two
The two is lubricated during cooperation.
The centre bore 341 in the axial direction through bent axle 34 is provided with bent axle 34, bent axle 34 is provided with two radial holes 342,
Each radial hole 342 is connected with centre bore 341, and the left end of centre bore 341 is connected by fuel feed pump 10 with low pressure oil sump a, each
Fitted bearing 32a, 32b are correspondingly arranged with a radial hole 342.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 the synchronous axial system of rotor 21, in fan 9 with turning
When son 21 is rotated, certain negative pressure can be produced near fan 9, so that the lubricating oil in low pressure oil sump a can be by fuel feed pump 10
Enter into centre bore 341, a part of lubricating oil in centre bore 341 can flow to rolling bearing 35a, 35b by radial hole 342
It is lubricated with to rolling bearing 35a, 35b, after another part lubricating oil in centre bore 341 flows out from centre bore 341, can
The bottom of the housing 1 of the side of the neighbouring motor 2 of flow direction, the 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 the parts of lubricating oil is flowed to further across fuel feed pump 10
Heart hole 341, so as to form oily 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 circulation of the lubricating oil between the diverse location of the bottom of housing 1.
The circulation area of the first refrigerant passage 5 is SOn electricity, the second refrigerant is provided between compression mechanism and the inner roof wall of housing 1
Passage 6, the circulation area of the second refrigerant passage 6 is SIn pressure, wherein SIn pressure>1.5SOn electricity.Entered into from air intake duct 11 cold in housing 1
Matchmaker, can flow to P2 chambers by the first refrigerant passage 5 from P1 chambers, then pass through the second refrigerant passage 6 and flow to P3 from P2 chambers
Chamber, in the flow process of refrigerant, by causing SIn pressure>1.5SOn electricity, advantageously ensure that the pressure of P2 chambers and P3 chambers substantially
It is equal, so as to ensure that the pressure at two air entries 322a, 322b is equal, and then advantageously ensure that enter into two cylinder 31a,
The inspiratory capacity of 31b is identical.
It is understood that in housing 1, the pressure of P2 chambers and P3 chambers is generally equalized, and P1 chambers are less than simultaneously
Interior pressure, the oil level that can so cause the lubricating oil at P2 chambers and P3 chambers is higher than P1 chambers, right so as to be conducive to
The lubrication of compression mechanism.
As shown in Fig. 2 the length that the part of rolling bearing 35a, 35b is set in same fitted bearing 32a, 32b be L1,
The length of the part being slidably matched with bent axle 34 is L2, and 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 the part being slidably matched with bent axle 34 of fitted bearing 32a, 32b and bent axle 34 is Δ A, its
Unit for μm, lubrication rates P=Δ A/L2, the wherein span of lubrication rates for 0.3~1.2, P unit for μm/mm.So that
On the premise of not influenceing the performance of compressor 100, it is ensured that the lubricating oil in discharge chamber 41 is using in discharge chamber 41 and housing 1
Pressure difference, penetrates into and carried out with the two between the part for not setting rolling bearing 35a, 35b of fitted bearing 32a, 32b and bent axle 34
The two is lubricated when being slidably matched, improves lubricant effect.
According to the refrigeration system of the utility model embodiment, including above-mentioned compressor 100.
It is simple structure, compact by setting above-mentioned compressor 100 according to the refrigeration system of the utility model embodiment.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be
Mechanically connect, or electrically connect or can communicate each other；Can be joined directly together, it is also possible to by the indirect phase of intermediary
Even, can be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For this
For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (12)
1. a kind of low back pressure horizontal compressor, it is characterised in that including：
Housing, the housing is provided with air intake duct and blast pipe, and the air intake duct is connected with the housing, the bottom of the housing
Portion is provided with low pressure oil sump；
Motor, the motor is located in the housing；
Compression mechanism, the compression mechanism is located in the housing, and the compression mechanism includes two cylinders, two fitted shafts
Hold, two cover plates and bent axle, the side away from each other of described two cylinders is respectively equipped with a fitted bearing, described two
The side toward each other of individual cylinder is respectively equipped with a cover plate, and each described fitted bearing is provided with and the air intake duct
The air entry of connection, the bent axle and two fitted bearings coordinate and the bent axle and the motor rotor engagement, described two
Individual fitted bearing is connected to limit a discharge chamber for closing, the exhaust outlet of each cylinder and the row by retainer
Air cavity is connected, and the blast pipe is extend into the discharge chamber.
2. low back pressure horizontal compressor according to claim 1, it is characterised in that lubrication is contained with the discharge chamber
Oil.
3. low back pressure horizontal compressor according to claim 1, it is characterised in that the air intake duct is located at the motor
Away from the side of the compression mechanism.
4. low back pressure horizontal compressor according to claim 1, it is characterised in that centre bore, institute are provided with the bent axle
State bent axle and be provided with multiple radial holes, each described radial hole is connected with the centre bore, the centre bore by fuel feed pump with
The low pressure oil sump connection, each described fitted bearing is correspondingly arranged with radial hole described at least one.
5. low back pressure horizontal compressor according to claim 4, it is characterised in that set on fitted bearing described at least one
There is the oil leak hole connected with the corresponding air entry, the one end open of the oil leak hole is located at the inner circumferential of corresponding fitted bearing
On wall.
6. low back pressure horizontal compressor according to claim 5, it is characterised in that the value model of the diameter of the oil leak hole
It is Ф 1mm- Ф 3mm to enclose.
7. low back pressure horizontal compressor according to claim 4, it is characterised in that the rotor away from the compressor
The side of structure is provided with fan, the fan and the rotor synchronous axial system, and the fan is rotated such that in the low pressure oil sump
Lubricating oil entered into the centre bore by the fuel feed pump.
8. low back pressure horizontal compressor according to claim 3, it is characterised in that the inner circumferential of the motor and the housing
The first refrigerant passage is limited between wall, the second refrigerant passage is provided between the compression mechanism and the inner roof wall of the housing.
9. low back pressure horizontal compressor according to claim 8, it is characterised in that the circulating face of first refrigerant passage
Product is SOn electricity, the circulation area of second refrigerant passage is SIn pressure, wherein SIn pressure>1.5SOn electricity。
10. the low back pressure horizontal compressor according to any one of claim 1-9, it is characterised in that the motor it is outer
Be provided with the first oil flow passage between the inner bottom wall of perisporium and the housing, the inner bottom wall of the compression mechanism and the 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 first oil flow passage
Logical area is SUnder electricity, the circulation area of second oil flow passage is SPressure, wherein SPressure>1.5SUnder electricity。
12. a kind of refrigeration systems, it is characterised in that including the low back pressure Horizontal type pressure according to any one of claim 1-11
Contracting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166199.6U CN206206164U (en) | 2016-10-31 | 2016-10-31 | Low back pressure horizontal compressor and refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621166199.6U CN206206164U (en) | 2016-10-31 | 2016-10-31 | Low back pressure horizontal compressor and refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206164U true CN206206164U (en) | 2017-05-31 |
Family
ID=58757663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621166199.6U Withdrawn - After Issue CN206206164U (en) | 2016-10-31 | 2016-10-31 | Low back pressure horizontal compressor and refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206206164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286299A (en) * | 2016-10-31 | 2017-01-04 | 广东美芝制冷设备有限公司 | Low back pressure horizontal compressor and refrigeration system |
-
2016
- 2016-10-31 CN CN201621166199.6U patent/CN206206164U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286299A (en) * | 2016-10-31 | 2017-01-04 | 广东美芝制冷设备有限公司 | Low back pressure horizontal compressor and refrigeration system |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170531 Effective date of abandoning: 20180316 |