CN206369377U - Reservoir and compressor assembly, refrigerating plant with it - Google Patents

Abstract

The utility model discloses a kind of reservoir and the compressor assembly with it, refrigerating plant.Reservoir includes：Separated space is provided with housing, housing；Air inlet pipe, air inlet pipe is located at the top of housing；Air intake duct group, air intake duct group includes at least one first pipeline, two the second pipelines and at least one buffering shell, buffer chamber is provided with each buffering shell, two the second pipelines are respectively provided on housing, connected between the lower end of first pipeline and each second pipeline by a buffer chamber, the circulation area of each buffer chamber is more than the circulation area of the second coupled pipeline.According to the reservoir of the utility model embodiment so that maximum volume efficiency rotating speed point increases, that is, ensure that the liquid storage volume of reservoir, the volumetric efficiency of compressor at high speed is improved again, the inspiratory resistance of compressor can be reduced.

Description

Reservoir and compressor assembly, refrigerating plant with it

Technical field

The utility model is related to refrigerating field, more particularly, to a kind of reservoir and the compressor assembly with it, refrigeration Device.

Background technology

There is the reservoir of compressor the gas-liquid of flash-pot in future to be separated in Air Conditioning Cycle, storing liquid The functions such as body, oil return.In order to ensure liquid storage volume in conventional reservoir, one end of air intake duct is arranged on to the top of liquid storage cylinder, Liquid storage volume determines that air intake duct is longer by the length L of air intake duct, and liquid storage volume is bigger.

Theory shows that first increase reduces compressor volume efficiency eta afterwards with compressor rotary speed n increase, has flex point, That is maximum volume efficiency rotating speed point, air intake duct is longer, and its volumetric efficiency at high speed is lower.The reservoir of correlation technique, Be ensure have larger liquid storage capacity, air intake duct design it is longer, but cause the volumetric efficiency of compressor at high speed compared with Low, refrigerating capacity is relatively low.

Utility model content

The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.

Therefore, the utility model proposes a kind of reservoir, improving the volumetric efficiency of compressor at high speed, can dropping The inspiratory resistance of low compressor.

The utility model also proposes a kind of compressor assembly with above-mentioned reservoir.

The utility model proposes a kind of refrigerating plant with above-mentioned compressor component again.

According to the reservoir of the utility model embodiment, including：Separated space is provided with housing, the housing；Air inlet pipe, The air inlet pipe is located at the top of the housing and connected with the separated space；Air intake duct group, the air intake duct group is included extremely Buffer chamber is provided with few first pipeline, two the second pipelines and at least one buffering shell, each buffering shell, it is described The upper end of first pipeline extends to the top of the separated space, and described two second pipelines are respectively provided on the housing, often The first end of individual second pipeline is extend into the separated space, and the shell is stretched out at the second end of each second pipeline Body, is connected between the lower end of first pipeline and each second pipeline by a buffer chamber, each described The circulation area of buffer chamber is more than the circulation area of coupled second pipeline.

According to the reservoir of the utility model embodiment, by setting buffer chamber, therefore the corresponding each gas of reservoir The length of the air intake duct of cylinder is the length of corresponding second pipeline, compared with existing reservoir, the air intake duct of reservoir Length reduces, so that maximum volume efficiency rotating speed point increases, that is, ensure that the liquid storage volume of reservoir, compression is improved again The volumetric efficiency of machine at high speed.Again due to by setting buffer chamber, the inspiratory resistance of compressor can be reduced.

In some embodiments of the present utility model, the buffering shell is one, each first pipeline and described two Individual second pipeline is located on the buffering shell.

In some specific examples of the present utility model, first pipeline is two, two first pipelines and institute State two the second pipelines and correspond setting in the vertical direction.

In other specific examples of the present utility model, first pipeline be one and be located at it is described buffering shell top The middle part on surface.

In some specific examples of the present utility model, the first end of one of them second pipeline extend into described delay Rush in chamber.

Further, the internal diameter for extending into second pipeline of the cushion chamber falls is D1, extend into the buffering The distance between the end face of second pipeline in chamber and the top surface of the buffer chamber are H1, wherein H1 >=D1/2.

In some embodiments of the present utility model, the buffering shell is two, and first pipeline is two, Mei Gesuo The first pipeline is stated by a buffering shell with second pipeline to be connected.

Alternatively, two buffer chambers are spaced apart in the vertical direction.

In some embodiments of the present utility model, the summation of the circulation area of first pipeline is S1, described two The summation of the circulation area of second pipeline is S2, wherein S1 >=S2/4.

In some embodiments of the present utility model, the internal diameter phase of the internal diameter of first pipeline and second pipeline Together, the internal diameter of first pipeline is D2, and the height of the separated space is H2, and the height of the buffer chamber is H3, wherein D2/2≤H3≤0.9H2。

According to the compressor assembly of the utility model embodiment, including：Compressor, the compressor includes two cylinders； Reservoir according to the utility model above-described embodiment, the air-breathing of described two second pipelines respectively with described two cylinders Passage is connected.

According to the compressor assembly of the utility model embodiment, the above-mentioned reservoir by setting, so that most Big volumetric efficiency rotating speed point increase, that is, ensure that the liquid storage volume of reservoir, the volume of compressor at high speed improved again Efficiency, improves compressor performance, while the inspiratory resistance of compressor can be reduced.

According to the refrigerating plant of the utility model embodiment, including according to the compressor set of the utility model above-described embodiment Part.

According to the refrigerating plant of the utility model embodiment, the above-mentioned compressor assembly by setting, it is ensured that reservoir Liquid storage volume, improve the volumetric efficiency of compressor at high speed again, compressor performance improved, while compression can be reduced The inspiratory resistance of machine.

Brief description of the drawings

Fig. 1-Fig. 5 is the schematic diagram of the reservoir according to the several not be the same as Examples of the utility model；

Fig. 6 is the schematic diagram for buffering shell according to some embodiments of the utility model；

Fig. 7 is the profile in A-A directions in Fig. 6；

Fig. 8 is the schematic diagram for buffering shell according to other embodiments of the utility model；

Fig. 9 is the profile in B-B directions in Fig. 8；

Figure 10 is the schematic diagram of the buffering shell according to the utility model still other embodiments；

Figure 11 is the profile in C-C directions in Figure 10；

Figure 12 is the schematic diagram of the compressor assembly according to the utility model embodiment；

Figure 13 is the graph of relation between the compressor rotary speed and volumetric efficiency under different air-breathing length of tube L.

Reference：

Compressor assembly 1000,

Reservoir 100, compressor 200,

Housing 1, separated space 10,

Air inlet pipe 2,

Air intake duct group 4, the first pipeline 40, the second pipeline 41, buffering shell 42, buffer chamber 420,

Cylinder 5.

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 ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

In addition, 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 " are meant that at least two, such as two It is individual, three etc., unless otherwise specifically defined.

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, the indirect phase of intermediary can also be passed through Even, can be two element internals connection or two elements interaction relationship, unless otherwise clear and definite restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.

The schematic diagram of the reservoir 100 according to the utility model embodiment is described in detail below with reference to Fig. 1-Figure 13, wherein Reservoir 100 can coordinate with compressor 200 to constitute compressor assembly 1000, and compressor 200 includes two cylinders 5, two The air intake passage of cylinder 5 is connected with reservoir 100 respectively.

As Figure 1-Figure 5, according to the reservoir 100 of the utility model embodiment, including：Housing 1, air inlet pipe 2 and suction Tracheae group 4.Separated space 10 is wherein provided with housing 1.Air inlet pipe 2 is located at the top of housing 1 and connected with separated space 10.Tool Body, air inlet pipe 2 is located on the roof of housing 1.

Air intake duct group 4 includes at least one first pipeline 40, two the second pipelines 41 and at least one buffering shell 42, each Buffer and buffer chamber 420 is provided with shell 42, the upper end of the first pipeline 40 extends to the top of separated space 10, two the second pipelines 41 are respectively provided on housing 1, and the first end of each second pipeline 41 is extend into separated space 10, and the of each second pipeline 41 Housing 1 is stretched out at two ends, and the second end of each second pipeline 41 is connected with the air intake passage of a cylinder 5.Alternatively, the first pipeline 40 are formed as straight tube, and the second pipeline 41 is formed as bend pipe.Specifically, the first pipeline 40, the second pipeline 41 and buffering shell 42 can be with Be formed in one part；Or first pipeline 40, the second pipeline 41 and buffering shell 42 can be independent molding part, multiple independent shapings Part is fixed together by fixed form.

Connected between the lower end of first pipeline 40 and each second pipeline 41 by a buffer chamber 420, each buffering The circulation area of chamber 420 is more than the circulation area of the second coupled pipeline 41.That is, being flowed out from the first pipeline 40 Refrigerant first flow into buffer chamber 420, buffering, buffer chamber 420 are played a part of in flowing of the buffer chamber 420 to refrigerant Interior refrigerant is flowed into be drained into corresponding cylinder 5 from the second end of the second pipeline 41 after the second pipeline 41 and is compressed.

Specifically, outside refrigerant is drained into separated space 10 by air inlet pipe 2 and carries out gas-liquid separation, the gas isolated The first end of state refrigerant from the first pipeline 40 is entered in air intake duct group 4, and the gaseous coolant in the first pipeline 40 is drained into buffering In chamber 420, the gaseous coolant in buffer chamber 420 is drained into the second pipeline 41, and the gaseous coolant of the second pipeline 41 is from The second end outflow of two pipelines 41.The liquid refrigerants separated is deposited in separated space 10.

Because the circulation area of buffer chamber 420 is more than the circulation area of the second coupled pipeline 41, therefore buffering Chamber 420 can play a part of buffering to gaseous coolant, and being drained into refrigerant in buffer chamber 420 from the first pipeline 40 can be It is flowed into again in the second pipeline 41 after being stopped in buffer chamber 420.

When reservoir 100 and compressor 200 coordinate, the length L of the escape pipe of reservoir 100 and turning for compressor 200 Following relation is met between fast n：Wherein C-for the velocity of sound inside reservoir, m/s；N-compression Machine rotating speed, rpm；K-refrigerant polytropic exponent, it is relevant with refrigerant physical property, pressure, temperature etc.；Rg-cold media gas constant, with refrigerant Physical property, pressure, temperature etc. are relevant；T-kelvin degree.It can be seen from above-mentioned formula, optimal volumetric efficiency when rotating speed is higher Required pipe range is shorter, therefore it can be seen from the conclusion and correlation test result, required pipe range L is shorter when rotating speed is higher, And optimal volumetric efficiency values are also higher.

As shown in figure 13, with the rotating speed n of compressor 200 increase, first increase reduces the volumetric efficiency η of compressor 200 afterwards, There is flex point, i.e. maximum volume efficiency rotating speed point, while flex point is influenceed by the length L of air intake duct, air intake duct is longer, then flex point pair Answer rotating speed bigger, such as flex point rotating speed of L length is n2, flex point rotating speed small L is n1, n2>n1.Such curve is moved to right, and is as a result led Cause：Air intake duct is longer, and its volumetric efficiency at high speed is lower.Such as under high rotating speed point n3, the volume of longer air intake duct Efficiency is η 2, and the volumetric efficiency of shorter air intake duct is η 1, η 2>η1.

According to the reservoir 100 of the utility model embodiment, by setting buffer chamber 420, therefore the correspondence of reservoir 100 Each cylinder 5 air intake duct length be corresponding second pipeline 41 length, compared with existing reservoir, reservoir The length of 100 air intake duct reduces, so that maximum volume efficiency rotating speed point increases, that is, ensure that the liquid storage of reservoir 100 Volume, improves the volumetric efficiency of compressor 200 at high speed again.Again due to that by setting buffer chamber 420, can reduce The inspiratory resistance of compressor 200.

As shown in Figure 1-Figure 3, in some embodiments of the present utility model, buffering shell 42 is one, each first pipeline 40 and two the second pipelines 41 be located at buffering shell 42 on.

As depicted in figs. 1 and 2, in some specific examples of the present utility model, the first pipeline 40 is two, two first Pipeline 40 and two the second pipelines 41 correspond setting in the vertical direction.As shown in figure 3, it is of the present utility model other In specific example, the first pipeline 40 be one and be located at buffering shell 42 top surface middle part, so as to reduce cost.

According to some embodiments of the present utility model, as shown in Fig. 2 the first end of one of them the second pipeline 41 is extend into In buffer chamber 420.Further, the internal diameter for the second pipeline 41 extending into buffer chamber 420 is D1, extend into cushion chamber The distance between the end face of the second pipeline 41 in room 420 and the top surface of buffer chamber 420 are H1, wherein H1 >=D1/2.From And can ensure buffer chamber 420 can play a part of buffering.

Need to illustrate, the shape of buffering shell 42 can be selected according to actual conditions, as long as ensureing buffering Chamber 420 can play a part of buffering to the gaseous coolant for flowing to the second pipeline 41.For example of the present utility model one In a little specific examples, when it is one to buffer shell 42, as shown in Figure 6 and Figure 7, the longitudinal cross-section of buffering shell 42 is formed as rectangle, The cross section of buffering shell 42 is formed as circular.In other specific examples of the present utility model, as shown in Figure 8 and Figure 9, buffering The longitudinal section of shell 42 is formed as rectangle, and the cross section of buffering shell 42 is formed as Long Circle (run-track shaped).Of the present utility model In other specific example, as shown in Figure 10 and Figure 11, buffering shell 42 is formed as spherical.

As shown in Figure 4 and Figure 5, in some embodiments of the present utility model, buffering shell 42 is two, and the first pipeline 40 is Two, each first pipeline 40 is connected by a buffering shell 42 with second pipeline 41.That is, two buffering shells 42 Correspond and set with two the first pipelines 40, two buffering shells 42 and two the second pipelines 41 are corresponded and set, Mei Gehuan Chamber 420 is rushed to connect with first pipeline 40 and second pipeline 41 respectively.Consequently facilitating will buffering shell 42, the first pipeline 40 and second pipeline 41 be made of one, be easy to manufacture.

Alternatively, as shown in figure 5, two buffer chambers 420 are spaced apart in the vertical direction.Alternatively, such as Fig. 4 and figure Shown in 5, each buffering shell 42 can be formed as spherical.

In some embodiments of the present utility model, the summation of the circulation area of the first pipeline 40 is S1, two second pipes The summation of the circulation area on road 41 is S2, wherein S1 >=S2/4.Need to illustrate, when the first pipeline 40 is one, The circulation area summation of first pipeline 40 refers to the circulation area of first pipeline 40, when the first pipeline 40 is multiple, The circulation area summation of first pipeline 40 refers to the circulation area summation of multiple first pipelines 40.

In some embodiments of the present utility model, the internal diameter of the first pipeline 40 is identical with the internal diameter of the second pipeline 41, the The internal diameter of one pipeline 40 is D2, and the height of separated space 10 is H2, and the height of buffer chamber 420 is H3, wherein D2/2≤H3≤ 0.9H2.It thereby may be ensured that the buffering effect of buffer chamber 420.

As shown in figure 1, in some specific embodiments of the present utility model, buffering shell 42 is one, and the first pipeline 40 is Two, two the first pipelines 40 are located on the roof of buffering shell 42, and each first pipeline 40 is connected with buffer chamber 420, each First pipeline 40 is formed as straight tube.The first end of two the second pipelines 41 is respectively provided on the bottom wall of buffering shell 42, and each second Pipeline 41 is connected with buffer chamber 420, and each second pipeline 41 is formed as bend pipe, and the length of two the second pipelines 41 is different, and two The cross-sectional area summation of individual first pipeline 40 is S1, and the cross-sectional area summations of two the second pipelines 41 is S2, wherein S1 >=S2/4, The cross-sectional area of buffer chamber 420 is S3, wherein S3 ＞ 1.1S2.

As shown in Fig. 2 in other specific embodiments of the present utility model, buffering shell 42 is one, the first pipeline 40 For two, two the first pipelines 40 are respectively provided on the roof of buffering shell 42, and each first pipeline 40 connects with buffer chamber 420 Logical, each first pipeline 40 is formed as straight tube.Two the second pipelines 41 are respectively formed as bend pipe, the length of two the second pipelines 41 Identical i.e. L1=L2.The first end of one of them the second pipeline 41 is extend into buffer chamber 420, another the second pipeline 41 First end is located on the bottom wall of buffering shell 42.The internal diameter for the second pipeline 41 extending into buffer chamber 420 is D1, is extend into slow The distance between the end face of the second pipeline 41 rushed in chamber 420 and the top surface of buffer chamber 420 are H1, wherein H1 >=D1/ 2.The cross-sectional area summation of two the first pipelines 40 is S1, and the cross-sectional area summations of two the second pipelines 41 is S2, wherein S1 >= S2/4, the cross-sectional area of buffer chamber 420 is S3, wherein S3 ＞ 1.1S2.

As shown in figure 3, in other specific embodiment of the present utility model, buffering shell 42 is one, the first pipeline 40 For one, the first pipeline 40 is located on the roof of buffering shell 42 and connected with buffer chamber 420, and the first pipeline 40 is formed as straight Pipe.The first end of two the second pipelines 41 is respectively provided on the bottom wall of buffering shell 42, each second pipeline 41 and buffer chamber 420 Connection, each second pipeline 41 is formed as bend pipe, and the length of two the second pipelines 41 is different, and the cross-sectional area of the first pipeline 40 is S1, the cross-sectional area summation of two the second pipelines 41 is S2, wherein S1 >=S2/4, and the cross-sectional area of buffer chamber 420 is S3, its Middle S3 ＞ 1.1S2.

As shown in Figure 4 and Figure 5, in further specific embodiments of the present utility model, buffering shell 42 is two, the first pipe Road 40 is two, and each first pipeline 40 is formed as straight tube, and each second pipeline 41 is formed as bend pipe, each first pipeline 40 Lower end is located on the roof of one of buffering shell 42, and the first end of each second pipeline 41 is located at corresponding buffering shell 42 Bottom wall on.The cross-sectional area summation of two the first pipelines 40 is S1, and the cross-sectional area summation of two the second pipelines 41 is S2, its Middle S1 >=S2/4.The minimum value of the cross-sectional area of each buffer chamber 420 is S3, and the cross-sectional area of each second pipeline 41 is S4, wherein the cross-sectional area of the cross-sectional area of each buffer chamber 420 and the second coupled pipeline 41 meets following relation： S3 ＞ 1.1S4.In the more specific example shown in Fig. 4, two buffer chambers 420 are in high settings such as above-below directions.Shown in Fig. 5 More specific example in, two buffer chambers 420 are arranged at intervals in the vertical direction.

According to the compressor assembly 1000 of the utility model embodiment, including：Compressor 200 and according on the utility model The reservoir 100 of embodiment is stated, wherein compressor 200 includes two cylinders 5.Two the second pipelines 41 respectively with two cylinders 5 Air intake passage be connected.I.e. one the second pipeline 41 is connected with the air intake passage of one of cylinder 5, another second pipeline 41 It is connected with the air intake passage of another cylinder 5.

According to the compressor assembly 1000 of the utility model embodiment, the reservoir 100 above-mentioned by setting, so as to So that maximum volume efficiency rotating speed point increases, that is, the liquid storage volume of reservoir 100 is ensure that, compressor 200 is improved again in height Volumetric efficiency under rotating speed, improves the performance of compressor 200, while the inspiratory resistance of compressor 200 can be reduced.

According to the refrigerating plant of the utility model embodiment, including according to the compressor set of the utility model above-described embodiment Part 1000.

According to the refrigerating plant of the utility model embodiment, the compressor assembly 1000 above-mentioned by setting, it is ensured that storage The liquid storage volume of liquid device 100, improves the volumetric efficiency of compressor 200 at high speed again, improves the performance of compressor 200, together When can reduce the inspiratory resistance of compressor 200.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, first is special Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.

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 the 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.Moreover, specific features, structure, material or the feature of description can be with Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification 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 reservoir, it is characterised in that including：

Separated space is provided with housing, the housing；

Air inlet pipe, the air inlet pipe is located at the top of the housing and connected with the separated space；

Air intake duct group, the air intake duct group includes at least one first pipeline, two the second pipelines and at least one buffering shell, often Buffer chamber is provided with the individual buffering shell, the upper end of first pipeline extends to the top of the separated space, described two Individual second pipeline is respectively provided on the housing, and the first end of each second pipeline is extend into the separated space, often The housing is stretched out at second end of individual second pipeline, leads between the lower end of first pipeline and each second pipeline A buffer chamber connection is crossed, the circulation area of each buffer chamber is more than coupled second pipeline Circulation area.

2. reservoir according to claim 1, it is characterised in that the buffering shell is one, each first pipeline It is located at described two second pipelines on the buffering shell.

3. reservoir according to claim 2, it is characterised in that first pipeline is two, two first pipes Road and described two second pipelines correspond setting in the vertical direction.

4. reservoir according to claim 2, it is characterised in that first pipeline is one and is located at the buffering shell Top surface middle part.

5. reservoir according to claim 2, it is characterised in that the first end of one of them second pipeline is extend into The cushion chamber falls.

6. reservoir according to claim 5, it is characterised in that extend into second pipeline of the cushion chamber falls Internal diameter be D1, extend between the end face of second pipeline of the cushion chamber falls and the top surface of the buffer chamber Distance be H1, wherein H1 >=D1/2.

7. reservoir according to claim 1, it is characterised in that the buffering shell is two, first pipeline is two Individual, each first pipeline is connected by a buffering shell with second pipeline.

8. reservoir according to claim 7, it is characterised in that two buffer chambers are spaced point in the vertical direction Cloth.

9. reservoir according to claim 1, it is characterised in that the summation of the circulation area of first pipeline is S1, The summation of the circulation area of described two second pipelines is S2, wherein S1 >=S2/4.

10. the reservoir according to any one of claim 1-9, it is characterised in that the internal diameter of first pipeline and institute The internal diameter for stating the second pipeline is identical, and the internal diameter of first pipeline is D2, and the height of the separated space is H2, the cushion chamber The height of room is H3, wherein D2/2≤H3≤0.9H2.

11. a kind of compressor assembly, it is characterised in that including：

Compressor, the compressor includes two cylinders；

Reservoir according to any one of claim 1-10, described two second pipelines respectively with described two cylinders Air intake passage is connected.

12. a kind of refrigerating plant, it is characterised in that including compressor assembly according to claim 11.