CN207935048U - Reciprocating compressor air suction silencer and reciprocating compressor with it - Google Patents

Abstract

The utility model discloses a kind of reciprocating compressor air suction silencer and with its reciprocating compressor, reciprocating compressor includes with air suction silencer：Lower casing has air intake duct；Upper casing, lid are located on lower casing and limit accommodation space with lower casing cooperation；Snakelike tube assembly, it is located in accommodation space and accommodation space is divided into the first silencing cavity and the second silencing cavity, snakelike tube assembly is located at the first noise reduction expanded bore that the part in the first silencing cavity is equipped with the first silencing cavity of connection, and snakelike tube assembly is located at the second noise reduction expanded bore that the part in the second silencing cavity is equipped with the inner cavity for being connected to snakelike tube assembly；Upper casing includes upper shell and upper inner casing, is connected by upper connector between upper shell and upper inner casing；Lower casing includes lower casing and lower inner casing, is connected by lower connector between lower casing and lower inner casing.Reciprocating compressor air suction silencer according to the present utility model is conducive to obtain preferably noise reduction by setting upper casing and lower casing to double-layer structure.

Description

Reciprocating compressor air suction silencer and reciprocating compressor with it

Technical field

The utility model is related to technical field of refrigeration equipment, more particularly to a kind of reciprocating compressor air suction silencer And the reciprocating compressor with it.

Background technology

In the related technology, with the continuous development of social economy and science and technology, the improvement of people's living standards, environment guarantor Shield consciousness also greatly enhances.Household electrical appliance of the refrigerator as daily life indispensability, requirement of the people to its performance is also higher and higher, And refrigerator, other than important refrigerating capacity, noise level is also one of the index of refrigerator most critical, the noise master of refrigerator It will be from the noise of freezer compressor, " heart " of the freezer compressor as refrigerator system, to monomer performance, noise, vibration Horizontal requirement is also higher and higher, in terms of this straight-forward phenomenon is mainly reflected in noise, so the noise control to freezer compressor The importance of system is self-evident.

Muffling device common at present is complicated, and making is cumbersome, improves the valence of compressor or even entire refrigeration product Lattice, while the most of two-stage silencers of inhaling silencer of prior art Reciprocting piston compressor, because silencer cavity is small, Compression ratio is limited, therefore conventional muffler sound deadening capacity is limited.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model carries Go out a kind of reciprocating compressor air suction silencer, the structure of the reciprocating compressor air suction silencer is simple and noise reduction is imitated Fruit is good.

The utility model also proposes a kind of reciprocating compressor, and the reciprocating compressor includes above-mentioned reciprocating compression Machine air suction silencer.

According to the reciprocating compressor air suction silencer of the utility model first aspect embodiment, including：Lower casing, it is described There is air intake duct on lower casing；Upper casing, the upper shell cover are located on the lower casing, and the upper casing is limited with lower casing cooperation Accommodation space；Snakelike tube assembly, the snakelike tube assembly are located in the accommodation space and the accommodation space are divided into the One silencing cavity and the second silencing cavity, the snakelike tube assembly are located at the part in first silencing cavity and are equipped with connection described first First noise reduction expanded bore of silencing cavity, the snakelike tube assembly are located at the part in second silencing cavity and are equipped with the connection snake Second noise reduction expanded bore of the inner cavity of shape tube assembly；Wherein, the upper casing includes upper shell and upper in the upper shell Inner casing is connected between the upper shell and the upper inner casing by upper connector；The lower casing includes lower casing and is set to lower outer Lower inner casing in shell is connected between the lower casing and the lower inner casing by lower connector.

According to the reciprocating compressor air suction silencer of the utility model embodiment, by setting upper casing and lower casing to Double-layer structure, and the first silencing cavity and the second silencing cavity etc. are set so that the gas sucked by air intake duct can carry out multiple Noise reduction is buffered, in this way, being conducive to obtain preferably noise reduction.

In addition, also there is following add with air suction silencer according to the reciprocating compressor of the utility model above-described embodiment Technical characteristic：

Some embodiments according to the present utility model limit between the upper shell, the upper inner casing and the upper connector Make multiple upper closing chambers；Multiple lower closing chambers are limited between the lower casing, the lower inner casing and the lower connector.

Some embodiments according to the present utility model, the upper connector are interior and described interior to be formed in the upper shell Upper reinforcing rib at least one during shell is outer；The lower connector be formed in the lower casing with the lower inner casing it is outer at least Lower reinforcing rib at one.

Further, the gap between the upper shell and the upper inner casing is 0.5mm to 1mm, the lower casing and institute It is 0.5mm to 1mm to state the gap between lower inner casing.

Further, the wall thickness of the upper inner casing and the lower inner casing is 0.5mm to 1mm.

Some embodiments according to the present utility model, the snakelike tube assembly include：First sub- coiled pipe, first son The outside of coiled pipe is equipped with the first connecting plate；Second sub- coiled pipe, the second sub- coiled pipe and the described first sub- coiled pipe phase It even and is arranged symmetrically to form coiled pipe, the outside of the second sub- coiled pipe is equipped with the second connecting plate；Wherein, the described first sub- snake Be equipped with one of in shape pipe and the described second sub- coiled pipe at least one groove and another equipped with it is described at least The boss of one groove match, the groove are corresponded with the boss.

Further, when the described first sub- coiled pipe is integrated with the described second sub- coiled pipe assembly, described first connects Only the inner bottom surface to the upper casing, first connecting plate and described second connect respectively at the top of fishplate bar and second connecting plate The inner bottom surface of the lower casing is only supported in the bottom of fishplate bar respectively；Wherein, first connecting plate and second connecting plate are along preceding Rear direction extends and the accommodation space is divided into first silencing cavity and second silencing cavity.

The cross section of some embodiments according to the present utility model, the snakelike tube assembly is rectangular, round or ellipse.

Optionally, the upper casing and the lower casing are plastic part, and steel wire is additionally provided between the upper casing and the lower casing, The upper casing is set to be tightly connected with the lower casing by heating the steel wire.

According to the reciprocating compressor of the utility model second aspect embodiment, including reciprocating compressor described above Use air suction silencer.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly will be from following description In become apparent, or recognized by the practice of the utility model.

Description of the drawings

The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination following accompanying drawings to embodiment Become apparent and is readily appreciated that, wherein：

Fig. 1 is a schematic diagram according to the reciprocating compressor air suction silencer of the utility model embodiment；

Fig. 2 is a sectional view of Fig. 1；

Fig. 3 is the partial enlarged view that Fig. 2 centre circles show part；

Fig. 4 is one of snakelike tube assembly in the reciprocating compressor air suction silencer according to the utility model embodiment Explosive view.

Reference numeral：

Reciprocating compressor air suction silencer 100,

Lower casing 1, air intake duct 11, lower casing 12, lower inner casing 13, lower connector 14, lower closing chamber 15,

Upper casing 2, upper shell 21, upper inner casing 22, upper connector 23, upper closing chamber 24,

Accommodation space 3, the first silencing cavity 31, the second silencing cavity 32,

Snakelike tube assembly 4, the second noise reduction expanded bore 42, the first sub- coiled pipe 43, the first connecting plate 431, the second son are snakelike Pipe 44, the second connecting plate 441,

Communicating pipe 6, steel wire 7.

Specific implementation mode

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

In the description of the present invention, it should be understood that term " thickness ", "upper", "lower", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " circumferential direction " be based on Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than instruction or dark Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair The limitation of the utility model.In addition, define " first ", the feature of " second " can explicitly or implicitly include one or More this feature.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

Reciprocating compressor air suction silencer 100 according to the utility model embodiment is described below in conjunction with the accompanying drawings.

As Figure 1-Figure 4, according to the reciprocating compressor air suction silencer of the utility model first aspect embodiment 100, including：Lower casing 1, upper casing 2 and snakelike tube assembly 4.

Specifically, having air intake duct 11 on lower casing 1；For example, air intake duct 11 can be formed in lower casing 1 side (such as Left side, right side, front side or rear side).The lid of upper casing 2 is located on lower casing 1, and upper casing 2 limits accommodation space 3 with the cooperation of lower casing 1. It can be tightly connected between upper casing 2 and lower casing 1, such as sealing element etc. can be equipped between upper casing 2 and lower casing 1.

Snakelike tube assembly 4 is located in accommodation space 3, and snakelike tube assembly 4 (such as import of snakelike tube assembly 4) can be with suction Tracheae 11 is connected to, and snakelike tube assembly 4 can divide accommodation space 3 for the first silencing cavity 31 and the second silencing cavity 32, snakelike Tube assembly 4 is located at the part in the first silencing cavity 31 and is equipped with the first noise reduction expanded bore (not shown), the first noise reduction expanded bore It is connected to the first silencing cavity 31, snakelike tube assembly 4 is located at the part in the second silencing cavity 32 and is equipped with the second noise reduction expanded bore 42, and second Noise reduction expanded bore 42 is connected to the inner cavity of snakelike tube assembly 4.The gas entered in accommodation space 3 by air intake duct 11 can be via first Silencing cavity 31, the second silencing cavity 32, the first noise reduction expanded bore, the second noise reduction expanded bore 42 and snakelike tube assembly 4 it is interior Chamber carries out noise reduction, to advantageously reduce noise.

Wherein, upper casing 2 includes upper shell 21 and upper inner casing 22, and upper inner casing 22 is set to the inside of upper shell 21, upper shell 21 It can be connected by upper connector 23 between upper inner casing 22；Lower casing 1 includes lower casing 12 and lower inner casing 13, and lower inner casing 13 is set to The inside of lower casing 12 is connected between lower casing 12 and lower inner casing 13 by lower connector 14.In this way, by by upper casing 2 and under Shell 1 is arranged to double-layer structure, is conducive to further noise reduction.

According to the reciprocating compressor of the utility model embodiment air suction silencer 100, by by upper casing 2 and lower casing 1 It is set as double-layer structure, and the first silencing cavity 31 and the second silencing cavity 32 etc. are set so that the gas sucked by air intake duct 11 Multi-buffer noise reduction can be carried out, in this way, being conducive to obtain preferably noise reduction.

With reference to Fig. 2 and Fig. 3, some embodiments according to the present utility model, upper shell 21, upper inner casing 22 and upper connector 23 Between limit multiple upper closing chambers 24；Multiple lower closing chambers are limited between lower casing 12, lower inner casing 13 and lower connector 14 15。

For example, a upper envelope can be limited between two adjacent upper connectors 23 and upper shell 21 and upper inner casing 22 Closed chamber 24, adjacent two can limit a lower closing chamber between lower connector 14 and lower casing 12 and lower inner casing 13 15.As a result, the gas sucked by air intake duct 11 can be via the first silencing cavity 31, the second silencing cavity 32, multiple upper closings Chamber 24 and multiple lower closing chambers 15 carry out sound-deadening and noise-reducing, to be conducive to obtain preferably noise reduction.

As shown in Figures 2 and 3, some embodiments according to the present utility model, upper connector 23 are to be formed in shell 21 Upper reinforcing rib at least one during interior and upper inner casing 22 is outer；Lower connector 14 is to be formed in lower casing 12 and during lower inner casing 13 is outer Lower reinforcing rib at least one.In this way, being conducive to limit upper closing chamber 24 between upper shell 21 and upper inner casing 22, be conducive to Lower closing chamber 15 is limited between lower casing 12 and lower inner casing 13, is convenient for further sound-deadening and noise-reducing.

For example, upper connector 23 can be the upper reinforcing rib (including one or more) being formed in shell 21；On or Connector 23 can be the upper reinforcing rib being formed in outside inner casing 22；Or upper connector 23 can also be to be formed in shell 21 Upper reinforcing rib and the upper reinforcing rib that is formed in outside inner casing 22.

Lower connector 14 can be the lower reinforcing rib (including one or more) being formed in lower casing 12；Or lower connector 14 be the lower reinforcing rib being formed in outside lower inner casing 13；Or lower connector 14 can also be the lower reinforcing rib being formed in lower casing 12 With the lower reinforcing rib being formed in outside lower inner casing 13.

Further, upper gap between shell 21 and upper inner casing 22 can be 0.5mm to 1mm combined with Figure 1 and Figure 2, under Gap between shell 12 and lower inner casing 13 can be 0.5mm to 1mm.In this way, be conducive to upper shell 21 and upper inner casing 22 it Between limit closing chamber 24, and be conducive to limit lower closing chamber 15 between lower casing 12 and lower inner casing 13, be convenient for noise reduction Noise reduction.

Gap between upper shell 21 and upper inner casing 22 can be 0.5mm, 0.7mm, 0.9mm or 1mm, and lower casing 12 is under Gap between inner casing 13 can be 0.5mm, 0.7mm, 0.9mm or 1mm.

Further, the wall thickness of upper inner casing 22 and lower inner casing 13 is 0.5mm to 1mm.So that the knot of upper casing 2 and lower casing 1 Structure is more reasonable, and is conducive to noise reduction, reduces cost.

Further, as shown in Figure 2 and Figure 4, snakelike tube assembly 4 includes：First sub- coiled pipe 43 and the second son are snakelike Pipe 44.

The outside of first sub- coiled pipe 43 is equipped with the first connecting plate 431；Second sub- coiled pipe 44 and the first sub- coiled pipe 43 It is connected (for example, being connected in circumferential direction), and the second sub- coiled pipe 44 and the first sub- coiled pipe 43 are arranged symmetrically to form snake The outside of shape pipe, the second sub- coiled pipe 44 is equipped with the second connecting plate 441；Second connecting plate 441 can with first connecting plate 431 With parallel arrangement.

Wherein, at least one groove is equipped with one of in the first sub- coiled pipe 43 and the second sub- coiled pipe 44, and And first another in sub- coiled pipe 43 and the second sub- coiled pipe 44 be equipped with the boss at least one groove match, it is recessed Slot is corresponded with boss.By the cooperation of groove and boss be easily achieved the first sub- coiled pipe 43 and the second sub- coiled pipe 44 it Between assembly.

The utility model is without being limited thereto, can also pass through its other party between the first sub- coiled pipe 43 and the second sub- coiled pipe 44 Formula is connected such as snapping connection.

First connecting plate 431 and the second connecting plate 441 can extend along the longitudinal direction, optionally, in conjunction with Fig. 2, when When one sub- coiled pipe 43 and the assembly of the second sub- coiled pipe 44 are integrated, the top part of the first connecting plate 431 and the second connecting plate 441 The inner bottom surface of upper casing 2 Zhi be supported, the bottom of the first connecting plate 431 and the second connecting plate 441 only inner bottom surface to lower casing 1 respectively. Wherein, the first connecting plate 431 and the second connecting plate 432 can extend along the longitudinal direction, and the first connecting plate 431 and second Connecting plate 432 can divide accommodation space 3 for the first silencing cavity 31 and the second silencing cavity 32.In this way, the structure of snakelike tube assembly 4 is closed Reason and good manufacturability.

Plane where first connecting plate 431 and the second connecting plate 441 and the first sub- coiled pipe 43 and the second sub- coiled pipe 44 plane of symmetry can be vertical.

Wherein, the first connecting plate 431 and the plane where the second connecting plate 441 can be for example along the longitudinal direction and up and down The perpendicular that direction extends；The plane of symmetry of first sub- coiled pipe 43 and the second sub- coiled pipe 44 can be for example in left-right direction The plane extended with upper and lower directions.

Exemplary and without limitation, the cross section of snakelike tube assembly 4 can be rectangular, round or ellipse.Here cross Section is the axial cross sectional shape perpendicular to snakelike tube assembly 4.It is convenient for for snakelike tube assembly 4 being fabricated to different rule as a result, Lattice are conducive to expand range of choice.

In conjunction with Fig. 2 and Fig. 3, specifically, upper casing 2 and lower casing 1 are plastic part, and steel wire is additionally provided between upper casing 2 and lower casing 1 7, so that upper casing 2 is tightly connected with lower casing 1 by Heating Steel Wire 7.In this way, the steel wire 7 after heating can transfer heat to upper casing 2 With lower casing 1, to realize the sealed connection between upper casing 2 and lower casing 1.

Certainly, it can also be tightly connected by sealing element between upper casing 2 and lower casing 1.

Optionally, in conjunction with Fig. 2, it is additionally provided with communicating pipe 6 in accommodation space 3, one end of communicating pipe 6 is plugged to snakelike tube assembly In 4, communicating pipe 6 can be connected to the inner cavity of snakelike tube assembly 4；And the other end of communicating pipe 6 is hanging and opposite with air intake duct 11, And the other end of communicating pipe 6 can be spaced apart with the internal face of side wall 13.So so that the gas energy sucked by air intake duct 11 Multi-buffer, reflection are accessed, to be more advantageous to improvement noise reduction.

It is a kind of reciprocating compressor according to the reciprocating compressor of the utility model embodiment air suction silencer 100 With double-layer silencer, snakelike tube assembly 4 is set between upper casing 2 and lower casing 1, and air intake duct 11 is connected with snakelike tube assembly 4, air-breathing Pipe 11 is located at outside lower casing 1, and upper casing 2 and lower casing 1 all use double-layer thin wall structure, are connected by reinforcing rib between two layers, are formed more A closed housing；The accommodation space 3 that upper casing 2 and lower casing 1 surround is divided into the first silencing cavity 31 and second and disappeared by snakelike tube assembly 4 Sound chamber 32, the part that snakelike tube assembly 4 is located at the first silencing cavity 31 are equipped with the first noise reduction expanded bore, and snakelike tube assembly 4 is located at the The part of two silencing cavities 32 is equipped with the second noise reduction expanded bore 42.The utility model is closed using two silencing cavities, double-layer thin wall Multiple closed housings and the design of the serpentine members of multiple expanded bores, reach best noise reduction.

According to the reciprocating compressor of the utility model embodiment air suction silencer 100, it is by the inside points of muffler It is divided into two noise reduction chambers and is inwardly formed multiple muffler chambers in upper casing 2,1 wall thickness side of lower casing, produced during compressor operation Raw noise increases it and transmits loss, reduce noise by its cavity space；Partition board (including the first connecting plate 431 and second The space that upper-lower casing surrounds is divided into two noise reduction chambers by connecting plate 441 with snakelike tube assembly 4.

According to the reciprocating compressor of the utility model embodiment air suction silencer 100, refrigerant is from refrigerant inlet Into refrigerant inlet makes more refrigerants enter refrigeration cycle, while preventing most of refrigerator oil sucking compressor.Refrigeration Agent enters the first silencing cavity 31 by air intake duct 11, and acoustic wave transmission crosses internal layer thin-walled and enters closed cavity (including upper closing chamber 24 With lower closing chamber 15, similarly hereinafter), spatial volume mutation can cause sound wave reflection and have transmission lose, carry out noise elimination noise reduction；Separately Outside, air intake duct 11 becomes larger suddenly in 31 inner section of the first silencing cavity product, can also cause sound wave to reflect and have transmission to lose；Then it makes Cryogen enter the second silencing cavity 32, as a same reason, in the second silencing cavity 32, refrigerant from the expanded bore of communicating pipe 6 again Expansion, acoustic wave transmission cross internal layer thin-walled and enter closed cavity, and spatial volume mutation can cause the reflection of sound wave and have transmission to lose Noise reduction again；In this way, by two silencing cavities (including the first silencing cavity 31 and second silencing cavity 32) and the double-deck upper casing 2, lower casing 1 The common noise elimination of interior closed cavity reaches energy-saving and noise-reducing noise elimination purpose.

Therefore, compressor can be effectively reduced using the reciprocating compressor double-layer silencer of the utility model structure to make an uproar Sound achievees the purpose that energy-saving and noise-reducing silencing vibration-damping.

It is inhaled according to the reciprocating compressor of the utility model second aspect embodiment, including above-mentioned reciprocating compressor Gas muffler.It is used as a result, by the way that the reciprocating compressor of above-mentioned first aspect embodiment is arranged on the reciprocating compressor Air suction silencer 100 advantageously reduces the noise of reciprocating compressor.

With reference to Fig. 1 to Fig. 4 detailed description according to the reciprocating compressor air-breathing noise reduction of the utility model embodiment The course of work of device 100.

Specifically, according to the reciprocating compressor of the utility model embodiment air suction silencer 100, refrigerant is from system Cryogen entrance enters, and refrigerant inlet makes more refrigerants enter refrigeration cycle, while preventing most of refrigerator oil sucking pressure Contracting machine.Refrigerant enters the first silencing cavity 31 by air intake duct 11, and acoustic wave transmission crosses internal layer thin-walled, and to enter closed cavity (including upper Closing chamber 24 and lower closing chamber 15, similarly hereinafter), spatial volume mutation can cause the reflection of sound wave and have transmission to lose, and eliminate the noise Noise reduction；In addition, air intake duct 11 becomes larger suddenly in 31 inner section of the first silencing cavity product, it can also cause sound wave to reflect and there is transmission to damage It loses；Then refrigerant enters the second silencing cavity 32, as a same reason, in the second silencing cavity 32, expansion of the refrigerant from communicating pipe 6 It reexpands at hole, acoustic wave transmission crosses internal layer thin-walled and enters closed cavity, and spatial volume mutation can cause the reflection of sound wave and have Transmit loss noise reduction again；In this way, by two silencing cavities (including the first silencing cavity 31 and second silencing cavity 32) and bilayer The common noise elimination of shell 2, closed cavity in lower casing 1, reaches energy-saving and noise-reducing noise elimination purpose.So far it completes according to the utility model reality Apply the course of work of the reciprocating compressor air suction silencer 100 of example.

According to other compositions of the reciprocating compressor of the utility model embodiment and operate for the common skill in this field All it is known for art personnel, is not detailed herein.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example It is contained at least one embodiment or example of the utility model.In the present specification, schematic expression of the above terms Necessarily it is directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be It can be combined in any suitable manner in any one or more embodiments or example.In addition, without conflicting with each other, this field Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples In conjunction with and combination.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model Inside it can make changes, modifications, alterations, and variations to the above described embodiments.

Claims (10)

1. a kind of reciprocating compressor air suction silencer, which is characterized in that including：

Lower casing has air intake duct on the lower casing；

Upper casing, the upper shell cover are located on the lower casing, and the upper casing limits accommodation space with lower casing cooperation；

Snakelike tube assembly, the snakelike tube assembly are located in the accommodation space and the accommodation space are divided into the first noise reduction Chamber and the second silencing cavity, the snakelike tube assembly are located at the part in first silencing cavity and are equipped with connection first silencing cavity The first noise reduction expanded bore, the snakelike tube assembly, which is located at the part in second silencing cavity and is equipped with, is connected to the coiled pipe group Second noise reduction expanded bore of the inner cavity of part；

Wherein, the upper casing includes upper shell and the upper inner casing in the upper shell, the upper shell and the upper inner casing Between by upper connector be connected；The lower casing includes lower casing and the lower inner casing in lower casing, the lower casing and institute It states and is connected by lower connector between lower inner casing.

2. reciprocating compressor air suction silencer according to claim 1, which is characterized in that the upper shell, described Multiple upper closing chambers are limited between upper inner casing and the upper connector；The lower casing, the lower inner casing and the lower connection Multiple lower closing chambers are limited between part.

3. reciprocating compressor air suction silencer according to claim 1, which is characterized in that the upper connector is shape Upper reinforcing rib in upper shell described in Cheng Yu and at least one during the upper inner casing is outer；The lower connector be formed in it is described under Lower reinforcing rib in shell and at least one during the lower inner casing is outer.

4. reciprocating compressor air suction silencer according to claim 3, which is characterized in that the upper shell with it is described Gap between upper inner casing is 0.5mm to 1mm, and the gap between the lower casing and the lower inner casing is 0.5mm to 1mm.

5. reciprocating compressor air suction silencer according to claim 4, which is characterized in that the upper inner casing and described The wall thickness of lower inner casing is 0.5mm to 1mm.

6. reciprocating compressor air suction silencer according to any one of claims 1-5, which is characterized in that the snake Shape tube assembly includes：

The outside of first sub- coiled pipe, the first sub- coiled pipe is equipped with the first connecting plate；

Second sub- coiled pipe, the second sub- coiled pipe are connected and are arranged symmetrically to form coiled pipe with the described first sub- coiled pipe, The outside of the second sub- coiled pipe is equipped with the second connecting plate；

Wherein, at least one groove and separately is equipped with one of in the described first sub- coiled pipe and the described second sub- coiled pipe One is equipped with the boss at least one groove match, and the groove is corresponded with the boss.

7. reciprocating compressor air suction silencer according to claim 6, which is characterized in that when first son is snakelike When pipe is integrated with the described second sub- coiled pipe assembly, the top of first connecting plate and second connecting plate is only supported respectively The interior bottom of the lower casing is only supported in the bottom of the inner bottom surface of the upper casing, first connecting plate and second connecting plate respectively Face；

Wherein, first connecting plate and second connecting plate extend and the accommodation space are divided into institute along the longitudinal direction State the first silencing cavity and second silencing cavity.

8. reciprocating compressor air suction silencer according to claim 1, which is characterized in that the snakelike tube assembly Cross section is rectangular, round or ellipse.

9. reciprocating compressor air suction silencer according to claim 5, which is characterized in that the upper casing and it is described under Shell is plastic part, and steel wire is additionally provided between the upper casing and the lower casing, makes the upper casing and institute by heating the steel wire State lower casing sealed connection.

10. a kind of reciprocating compressor, which is characterized in that include the reciprocating pressure according to any one of claim 1-9 Contracting machine air suction silencer.