CN102720653A - Suction muffler for compressor - Google Patents

Abstract

The invention discloses a suction muffler for a compressor, and belongs to the field of refrigeration compressor fittings. The suction muffler comprises a main housing and a housing cover, wherein the main housing is provided with a main housing suction chamber, a main housing gas inlet, a main housing sound-absorbing chamber, a main housing gas outlet interface and a filter screen; and the housing cover is provided with housing cover suction chambers and a housing cover sound-absorbing chamber. The suction muffler is characterized in that clamping plates are arranged in the main housing sound-absorbing chamber, an insertion plate groove is formed between the clamping plates in pair, a transition vent pipe and a gas guide pipe are formed at the upper part of the main housing sound-absorbing chamber, and a main housing vent pipe is formed at the lower part of the main housing sound-absorbing chamber; an insertion plate is formed in the housing cover sound-absorbing chamber, a housing cover gas inlet pipe is formed in the upper part of the housing cover sound-absorbing chamber, and a housing cover gas outlet pipe is formed at the lower part of the housing cover sound-absorbing chamber; and the filter screen comprises a filter screen body and a meshed frame, and the filter screen body consists of a base mesh and a side mesh. The suction muffler has the advantages that the sizes of the upper and the lower parts of the sound-absorbing chambers are increased, the path of the whole suction pipeline is increased and the suction resistance of the suction pipeline is reduced, resulting in high-efficiency operation of the refrigeration compressor; and the filtering area is greatly increased to prevent accumulation of foreign matters within a short period of time.

Description

Compressor air suction silencer

Technical field

The invention belongs to refrigeration compressor accessory technical field, be specifically related to a kind of compressor air suction silencer

Background technique

such as industry the reason of knowledge; Hermetically sealed refrigerating compressor unit usually within it portion an air suction silencer is installed; Cylinder sucks refrigerant gas through air suction silencer during refrigeration compressor work; Both play the heat effect of refrigeration agent when weakening the compressor inner heat by air suction silencer, and played again and reduce noise and the vibration that pressure pulsation causes in the refrigerant gas flow process, thereby helped to reduce the running noises of compressor; Can improve simultaneously the working efficiency of compressor effectively, promptly improve the Energy Efficiency Ratio (COP) of refrigeration compressor.Hence one can see that, and air suction silencer is the requisite of at present reciprocal enclosed refrigeration compressor and is one of accessory of outbalance.

have aforesaid good effect just because of air suction silencer; Therefore receive the concern of industry all the time; And the technical information of utilizing various technological means to use to improve the anti-acoustic capability of air suction silencer is no lack of in document and is seen in; Can confirm by being not limited to following open source literature of giving an example this: Chinese patent notice of authorization CN2663663Y recommends have " muffler shell " to be used for refrigeration compressor; This patent scheme has solved the sealing problem between the upper and lower casing, for improving aforesaid COP value achievement and can noise reduction is arranged; " baffler " that CN2705629Y provides improves the sealing problem of the baffler in the prior art equally, has the effect that plays the same tune on different musical instruments with aforesaid CN2663663Y; The characteristics of " hermetically sealed compressor air suction silencer " that CN2733037Y introduces are the hook-type connecting vessels to be set and will to descend the anechoic chamber to be separated into 1: 3 two not isometric cavity volume by longitudinal baffle in the anechoic chamber down; This patent is helpful for reducing the air suction and noise band frequency, but whole noise reduction still is not enough to reach the degree of people's expectation; The structure of " New Energy-saving Deadender Of Closed Refrigerant Motor-compressor " that CN2833127Y discloses is owing to similar with aforementioned CN2733037Y, so technique effect is also similar; " Semi-direct suction muffler for refrigeration compressor " that CN2886124Y discloses be for conveniently being equipped with help, and can in the transportation process with chiller plant, reduce probability of failure; " refrigeration compressor is used air suction silencer " that CN201165957Y recommends solved and prevented that foreign matter from getting into the problem of compresser cylinder.

again; Invention patent mandate notification number CN101487461B (cap of air suction silencer of refrigeration compressor and the cooperating structure of housing), CN101545472B (air suction silencer of refrigeration compressor) and these three patents of CN101545473B (air suction silencer of refrigeration compressor) propose by the applicant's preceding title; Wherein CN101487461B has solved the problems such as uneven and burr between cap and the housing of air suction silencer, makes both combinations reach ultimate attainment degree; CN101545472B has solved the problem of protecting of covering to filter screen dexterously, the objective technique effect that embodies the capable record of Instructions Page 3 15-18; CN101545473B isolates lid through between housing and cap, setting up; And cover in isolation and to be designed with the cofferdam; Filter screen is fixed on the cofferdam; Thereby objective embodied by Instructions Page 3 10-14 capable conclude such as avoiding foreign material to undermine compressor through filter screen, technique effects such as protection compresser cylinder.

In the technology contents of the air suction silencer of refrigeration compressor that give an example on be not limited to , every technological scheme that is intended to reduce noise that relates to roughly can reduce the following aspects: the one, increase the quantity of anechoic chamber; The 2nd, the length of lengthening suction line; The 3rd, reduce the effective cross section of suction line; The 4th, adopt the suction line of complicated shape such as the Chinese invention patent application publication number CN101171424A disclosed " air suction silencer that is used for refrigeration compressor " of international publication number W02006/116830; The 5th, hold and get (promptly double hold and with) increase anechoic chamber and lengthening suction line are double.But these technological means have also increased the inhalation resistance of baffler, thereby have reduced the ride quality of compressor complete machine when strengthening the baffler anti-acoustic capability.

in addition; In the running of compressor; For foreign material that prevent to exist in the refrigeration system and inevitable get into compresser cylinder; In the suction line of air-breathing noise reduction gas, be typically provided with the filter screen that is used for the foreign material filtering, shown in aforesaid CN2833129Y, CN201165957Y, CN201306287Y, CN101545472B and CN101545473B.But, be arranged on the position of steam outlet pipe with the mode of tiling, so effective filtration area is limited because the structure of filter screen is lost and rationally promptly shown as planely.Because hermetically sealed refrigerating compressor unit can't be opened and carry out maintaining, therefore behind air suction silencer work certain hour, foreign material are deposited on the filter screen gradually, cause the suction line resistance to increase, thereby reduce the ride quality of compressor.

In view of above-mentioned prior art; Be necessary further to improve; For this reason, the applicant has done long-term and useful design, and is taking to have done experiment in the applicant plant area under the strict secrecy provision; Proving effect is distinguished as a result, and the technological scheme that will introduce below produces under this background

Summary of the invention

task of the present invention is to provide a kind of and helps significantly to reduce noise and use and avoid noise pollution, help reducing the inhalation resistance of suction line and use the efficient operational effect that ensures compressor and be of value to the filter area that enlarges markedly filter screen and use to prevent filter screen from stopping up in a short time and avoid increasing the suction line resistance and and then ensure the compressor air suction silencer of the ride quality of compressor.

task of the present invention is accomplished like this; A kind of compressor air suction silencer; Comprise the cap that a main casing and matches with main casing; Main casing has main casing air aspiration cavity, main casing suction port, main casing anechoic chamber, is used for the filter screen that refrigerant gas matched with the suction valve of refrigeration compressor and that main casing that have the main casing air outlet is given vent to anger interface and is used for that the main casing suction port is introduced filters; Cap has cap air aspiration cavity and cap anechoic chamber; Wherein: described main casing air aspiration cavity is positioned at an end of main casing, and described main casing suction port and communicates with the main casing anechoic chamber with the main casing air aspiration cavity simultaneously between described main casing air aspiration cavity and main casing anechoic chamber; The described main casing interface of giving vent to anger extends on the outer wall of a side of the length direction be formed in main casing; Described main casing air outlet communicates with the main casing anechoic chamber, and described cap air aspiration cavity is corresponding with said main casing air aspiration cavity and match, and described cap anechoic chamber is corresponding with described main casing anechoic chamber and match; Be characterised in that: in described main casing anechoic chamber and from an end to the other end of the length direction of main casing anechoic chamber, constitute a pair of parallel clamping plate; This is to constituting a plugboard trough between the clamping plate; The main casing that described main casing anechoic chamber is divided into top by a pair of clamping plate is attend anechoic chamber under the main casing of anechoic chamber and bottom; Described main casing attend in the anechoic chamber and constitute in the position of the interface of giving vent to anger corresponding to described main casing one with the main casing transition breathing pipe that interface is connected of giving vent to anger; The transition ventilation tube chamber of this transition breathing pipe communicates with described main casing air outlet; And the length direction of in main casing is attend the anechoic chamber, attending the anechoic chamber along main casing constitute one communicate with described main casing suction port be used for will introduce said main casing by the refrigerant gas that the main casing suction port is introduced and attend the air entraining pipe in the anechoic chamber; And under described main casing, constitute the main casing breathing pipe that is connected with the transition breathing pipe in the anechoic chamber and in position corresponding to described transition breathing pipe; The main casing ventilation tube chamber of this main casing breathing pipe communicates with said transition ventilation tube chamber; And with main casing under the anechoic chamber communicate, described filter screen is arranged on the position of the main casing breathing pipe suction port of main casing breathing pipe; In described cap anechoic chamber and in position, constitute the plate that the length of length and plugboard trough adapts corresponding to described plugboard trough; This plate inserts in the said plugboard trough; And attend anechoic chamber under the cap of anechoic chamber and bottom by the cap that this plate is divided into top with said cap anechoic chamber; Cap is attend the anechoic chamber and is attend the anechoic chamber with described main casing and match; And under the cap under anechoic chamber and the described main casing anechoic chamber match; Wherein: described cap attend in the anechoic chamber and be positioned at plate above constitute a cap suction tude; The cap air inlet tube chamber of this cap suction tude is attend the anechoic chamber with described cap and is communicated, under described cap in the anechoic chamber and be positioned at plate below constitute a cap steam outlet pipe in position corresponding to described cap suction tude, the cap of this cap steam outlet pipe tube chamber of giving vent to anger communicates with described cap air inlet tube chamber; And with cap under the anechoic chamber communicate; Described filter screen comprises a filter screen body and a screen frame, the filter screen body by the spacer screen sheet and around the spacer screen sheet upwards the side net sheet of protuberance constitute, and by side net sheet upwards protuberance and pocket structure of the filter screen body being formed have filtering cavity around the spacer screen sheet; The main casing breathing pipe suction port of screen frame and said main casing breathing pipe is fixed, and this screen frame be the upper edge of a described side net sheet repeat the folding folded formation that constitutes or be one separately configuration and with the fixing ring body in the upper edge of side net sheet.

are in a concrete embodiment of the present invention; The described main casing interface of giving vent to anger is positioned at the middle position of outer wall of a side of the length direction of said main casing, and respectively is extended with the positioning boss that is used for the refrigeration compressor assembling in the give vent to anger corresponding both sides of outer wall of interface of this main casing.

in another concrete embodiment of the present invention, the shape of cross section of described transition breathing pipe and described main casing breathing pipe is all rectangular or circular.

are in another concrete embodiment of the present invention; The width of described plugboard trough is suitable with the thickness of said plate, on plate and at the position that borders on corresponding to said transition breathing pipe and main casing breathing pipe, constitutes the chamber of stepping down.

constitute one and are used to avoid the main casing suction port is produced the cavity of stepping down of interfering in another concrete embodiment of the present invention on described cap and in the position corresponding to described main casing suction port.

also have among the concrete embodiment of the present invention; Constitute the main casing sealed convex edge of a perforation towards the position, edge of a side of described cap at described main casing; And constituting a sealed convex edge caulking groove towards the position, edge of a side of main casing at cap, described main casing sealed convex edge is placed in the sealed convex edge caulking groove.

are more of the present invention and among concrete embodiment; When the shape of cross section of described main casing breathing pipe is rectangular; The ring bodies that the shape of described screen frame is rectangular, the said side net sheet of described filter screen body has four sidewalls.

in of the present invention and then concrete embodiment, when the shape of cross section of described main casing breathing pipe was rounded, the shape of described screen frame was cirque body, and the side net sheet of described transition net body forms cylindrical body.

are of the present invention again more and among concrete embodiment; When the shape of cross section of described main casing breathing pipe is equilateral triangle or hexagon; The shape of said screen frame is equilateral triangle or hexagon equally, and the side net sheet of described transition net body is the hexagonal prism that has the triangular prism of three sidewalls or have six sidewalls.

technological scheme provided by the invention is with respect to one of technique effect of prior art institute tool; The autonomous shell air inlet of refrigerant gas gets into the back and gets into by way of air entraining pipe and attend anechoic chamber and cap by main casing and attend attending in the anechoic chamber that the anechoic chamber constitutes jointly; In the following anechoic chamber that the anechoic chamber constitutes jointly under anechoic chamber and the cap under cap suction tude and cap steam outlet pipe get into by main casing successively again; And then through behind the strainer filtering successively through main casing breathing pipe and transition breathing pipe by the give vent to anger main casing air outlet introducing compressor of interface of main casing; Therefore the space of upper and lower anechoic chamber and employing in the prior art mentality of designing that increases pipeline is compared and is enlarged markedly; And the path length of whole suction line, thus the inhalation resistance of suction line can significantly be reduced, help the efficient operation of refrigeration compressor; Two; Because filter screen is made up of filter screen body and screen frame; And the filter screen body is formed pocket structure with adapter cavity; Thereby significantly increased filter area, and avoid foreign material to pile up in a short time, compressor air suction silencer also is unlikely the increase that causes inhalation resistance because of the filter screen obstruction after long-term work.

Description of drawings

Fig. 1 is the embodiments of the invention structural drawing.

Embodiment

can be expressly understood technical spirit of the present invention and beneficial effect more for the auditor that the makes Patent Office especially public; The claimant general elaborates with embodiment's mode below; But the description to embodiment all is not the restriction to the present invention program, any according to the present invention design done only for pro forma but not substantial equivalent transformation all should be regarded as technological scheme category of the present invention.

see also Fig. 1; The cap 2 that has provided preferred use plastics and matched with main casing 1 by the molded and shaped main casing 1 and of mould; The claimant need to prove: the geometrical shape of main casing 1 does not receive the restriction of shape shown; It can have other corresponding variation or claim to change, but the geometrical shape of cap 2 should keep the relation of following in sb's footsteps with the shape of main casing 1, to guarantee the reasonable fiting effect of cap 2 and main casing 1.

promptly constitute main casing air aspiration cavity 11 at the right-hand member of current icon location status at an end of main casing 1; Offer one first leakage opening 111 in the bottom of this main casing air aspiration cavity 11; The optimum seeking site of this first leakage opening 111 is positioned on the diapire 112 of main casing air aspiration cavity 11; More preferred positions is the intersection that first leakage opening 111 is positioned at the longitudinal wall 113 of diapire 112 and main casing air aspiration cavity 11, and present embodiment is selected the latter, but does not repel the former.Also promptly on aforesaid longitudinal wall 113, offer a main casing suction port 12 at main casing 1 towards an end of aforesaid main casing air aspiration cavity 11, this main casing suction port 12 communicates with main casing air aspiration cavity 11.

are to be extended with the main casing interface 14 of giving vent to anger on the outer wall of middle position of upside of shown position state in a side of the length direction of main casing 1, and the give vent to anger main casing air outlet 141 of interface 14 of this main casing communicates with the following main casing anechoic chamber 13 that is about to describe.Under user mode, this main casing air outlet 141 is matched with the suction valve of refrigeration compressor.Preferably, each extends and constitutes a location boss 142 on main casing is given vent to anger the outer wall of interface 14 and in the position of corresponding both sides, so that assemble with refrigeration compressor.

constitute a pair of parallel clamping plate 16 at the nearly middle part of the short transverse of the aforementioned main casing anechoic chamber 13 of main casing 1 and from an end to the other end of the length direction of main casing anechoic chamber 13, and the space between these a pair of clamping plate 16 constitutes plugboard trough 161.Can know by diagram; By a pair of clamping plate 16 main casing that aforesaid main casing anechoic chamber 13 is separated into top is attend anechoic chamber 132 under the main casing of anechoic chamber 131 and bottom; In main casing is attend anechoic chamber 131 and along the length direction that main casing is attend anechoic chamber 131, constitute an air entraining pipe 1312; The bleed tube chamber 13121 of this air entraining pipe 1312 communicates with aforesaid main casing suction port 12; That is to say that (with the current icon location status is example for the right-hand member of air entraining pipe 1312; Below allly relate to left and right, upper and lower and so on directionality notion with example) dock with main casing suction port 12, and the air entraining pipe air outlet 13122 of air entraining pipe 1312 is attend anechoic chamber 131 with aforesaid main casing and is communicated.Hence one can see that, the refrigerant gas that autonomous shell air inlet 12 sucks through the bleed tube chamber 13121 of air entraining pipe 1312 after from the air entraining pipe air outlet 13122 introducing main casings attend in the anechoic chamber 131.

again; In aforesaid main casing is attend anechoic chamber 131 and in the position of the base portion of the interface 14 of giving vent to anger corresponding to aforesaid main casing, constitute a transition adapting pipe 1311; The transition of this transition adapting pipe 131 connects tube chamber 13111 and communicates with aforesaid main casing air outlet 141, promptly communicates with the give vent to anger cavity 143 of interface 14 of main casing.

reach; Under aforesaid main casing, in the anechoic chamber 132 and at base portion be that the position of lower end constitutes a main casing breathing pipe 1321 corresponding to aforesaid transition adapting pipe 1311; The main casing of this main casing breathing pipe 1321 ventilation tube chamber 13211 communicates with bleed tube chamber 13121, and anechoic chamber 132 communicates under the main casing breathing pipe suction port 13212 of this main casing breathing pipe 1321 and the main casing.

in the present embodiment; Shape of cross section for transition breathing pipe 1311 and main casing breathing pipe 1321 is preferably rectangle; If but the circle of changing into or other similar shape should be regarded as and technological scheme equivalence disclosed by the invention so.That is to say, can not limit protection scope of the present invention because of the change of shape of transition breathing pipe 1311 and main casing breathing pipe 1321.

The transition net 15 that provides among figure comprises a transition net body 151 and a screen frame 152; Filter screen body 151 by spacer screen sheet 1511 and around the position, edge of spacer screen sheet 1511 upwards the side net sheet 1512 of protuberance constitute, and by side net sheet 1512 at the position, edge of spacer screen sheet 1511 with same degree upwards protuberance and the pocket structure that filter screen body 151 formed have filtering cavity 1513.Because filter screen body 1 is the structure of pocket, therefore can filtering cavity 1513 be called the filter chamber, so filter space enlarges markedly (following also will explain) for the plane structure in the prior art.Screen frame 152 is fixed with the position of the main casing breathing pipe suction port 13212 of main casing breathing pipe 1321; And the structural type of this screen frame 152 has following two kinds: the one, constitute folded formation by the upper edge of side net sheet 1512 with the mode that repeats to fold; For example repeat folding once, secondary or three times or more times, the notion that the folding notion of being said has here been drawn just as the coat-sleeve pipe with clothes in the everyday general purpose; The 2nd, adopt one separately configuration ring body and the upper edge of side net sheet 1512 and this ring body are fixed, again ring body and aforesaid main casing breathing pipe suction port 13212 are fixed.

are owing to be chosen as rectangle to the shape of cross section of main casing breathing pipe 1321 in the present embodiment; Therefore screen frame 152 is the screen frame of rectangle; And fix with the position of aforesaid main casing breathing pipe suction port 13212; Under this situation, aforesaid side net sheet 1512 has four sidewalls in fact.Since on outer wall, constitute corresponding to main casing breathing pipe suction port 13,212 one protrude in the tube wall of main casing breathing pipe 1321 the step 13213 on surface; Therefore screen frame 152 is fixing with this step 13213, it is fixed that means of fixation both can have been inserted build-in, and step 13213 is inserted and screen frame 152; Also can adopt thermofussion welding to fix; When adopting thermofussion welding fixedly, then the material of screen frame 152 is preferably plastics, can also adopt other similar mode to fix certainly.

if the shape of cross section of main casing breathing pipe 1321 is constituted circle, the shape of screen frame 152 is cirque body so, and the side net sheet 1512 of filter screen body 151 forms cylindrical body; Again; If when the shape of cross section of main casing breathing pipe 1321 is designed to equilateral triangle or equilateral hexagon; The geometrical shape of screen frame 152 is equilateral triangle or equilateral hexagon equally so, and the side net sheet 1512 of filter screen body 151 is for to have the prism shapes of three sidewalls or to have the hexagonal prism shape of six sidewalls.

hence one can see that; Aforesaid arbitrary structure all can make the cross-section area of the effective filtration area of filter screen 15 considerably beyond main casing breathing pipe 1321; The foreign material that simultaneously can avoid filtering out promptly are stacked into filter screen body 151 very soon in a short time; So air suction silencer of refrigeration compressor is unlikely to cause inhalation resistance to increase because of filter screen 15 stops up after long-term work.Because suffer that foreign material adhere to obstruction just in case the bottom of filter screen body 151 is a spacer screen sheet 1511, so filter screen body 151 around to net wall be that side net sheet 1512 still can be given full play to desirable ventilatory effect, this is to fail in the prior art to predict.

Fig. 1 please be continued to see in ; Constitute a plate 221 in the cap anechoic chamber 22 of the cap of having mentioned 2 and from an end to the other end of the length direction of cap anechoic chamber 22 in the above; This plate 221 is positioned at the middle part of the short transverse of cap anechoic chamber 22 substantially; More properly say the position of corresponding aforesaid plugboard trough 161, and when cap 2 covered with main casing 1 mutually, plate 221 was inserted in the plugboard trough 161.As preferred scheme, the width of plugboard trough 161 should adapt with the thickness of plate 22, so that embody both tenon fourth of the twelve Earthly Branches effects, so-called tenon is plate 221, and the so-called fourth of the twelve Earthly Branches is plugboard trough 161.

constitute the chamber 2211 of stepping down by shown in the figure on plate 22, this purpose of stepping down chamber 2211 is the pipeline sections that are used to avoid aforesaid transition breathing pipe 1311 and the connected portion of main casing breathing pipe 1321.And then by shown in Figure 1; The cap that cap anechoic chamber 22 is separated into top by plate 22 is attend anechoic chamber 223 under the cap of anechoic chamber 222 and bottom; Cap is attend anechoic chamber 222 and main casing and is attend anechoic chamber 131 and cooperate and constitute whole one and attend the anechoic chamber; With example, under the cap under anechoic chamber 223 and the main casing anechoic chamber 132 match and constitute a following anechoic chamber of integral body.

constitute a cap suction tude 2221 in cap is attend anechoic chamber 222; The cap air inlet tube chamber 22211 and the cap of this cap suction tude 2221 are attend anechoic chamber 22 and are communicated, so the refrigerant gas of being drawn by the air entraining pipe air outlet 13122 of aforesaid air entraining pipe 1312 only could get into behind cap air inlet tube chamber 22211 under the cap in the anechoic chamber 223.Under cap, constitute the cap steam outlet pipe 2231 that is connected with cap suction tude 2221 in the anechoic chamber 223 and in position corresponding to aforesaid cap suction tude 2221; The cap of this cap steam outlet pipe 2231 tube chamber 22311 of giving vent to anger communicates with aforesaid cap air inlet tube chamber 22211, and with cap under anechoic chamber 232 communicate.Therefore entering into the refrigerant gas that cap attendes in the anechoic chamber 222 gives vent to anger and just gets into anechoic chamber 223 under the cap behind the tube chamber 22311 getting into caps by way of cap air inlet tube chamber 22211.

Fig. 1 is please still seen in ; On cap 2 and in position, constitute or claim to be processed with the cavity 23 of stepping down, step down cavity 23 and play elimination and promptly avoid effect that main casing suction port 12 is produced the air inlet obstacles by this corresponding to aforesaid main casing suction port 12.When cap 2 with after main casing 1 cooperates, the cap air aspiration cavity 21 that is formed on the cap 2 constitutes a complete air aspiration cavity jointly with aforesaid main casing air aspiration cavity 11.

offer one second leakage opening 22212 on the wall body of aforesaid cap suction tude 2221 and bottom being positioned at; And under cap, offer one the 3rd leakage opening 2232 on the diapire of anechoic chamber 223 or the sidewall, in the present embodiment, the 3rd leakage opening 2232 is opened on the diapire of anechoic chamber 223 under the cap.

claimant need to prove: it is optimal selection of the present invention that first, second leakage opening 111,22212 and the 3rd leakage opening 2232 all possess; If yet select one of them or two, should not be regarded as having dissociated protection scope of the present invention so.These leakage openings are that first, second positive effect with the 3rd leakage opening 111,22212 and 2232 is to avoid the refrigerant liquid of lubricant oil and/or non-gasification to cause the liquid hammer to the cylinder of refrigeration compressor, use the protection cylinder.Particularly; These leakage openings guaranteed that air suction silencer mixes in sucking gas such as lubricant oil and liquid refrigerant etc. the time; These liquids can be back in the compressor body through leakage opening, can not be inhaled into cylinder and cause cylinder liquid hammer to occur damaging.

still see also Fig. 1; Constitute the logical main casing sealed convex edge 17 of a ring towards the position, edge of a side of cap 2 at main casing 1; And constitute the logical sealed convex edge caulking groove 24 of ring towards the position, edge of a side of main casing 1 at cap 2; Insert sealed convex edge caulking groove 24 and cap 2 is cooperated with main casing 1 by main casing sealed convex edge 17, aforesaid plate 221 is inserted in the plugboard trough 161 simultaneously.Certainly; Cap 2 is not limited to aforementioned manner with the mode of being sealed and matched of main casing 1, for example can adopt the sealing fit of the instruction among invention patent mandate notification number CN101487461B, CN101545472B and the CN101545473B (these three preceding Tianyin Electromechanical Co., Ltd., Changshu that claim by the applicant propose) etc.

During the work of refrigeration compressor; Refrigerant gas is got into the bleed tube chamber 13121 of air entraining pipe 1312 by main casing suction port 12; 13122 get into and attend anechoic chamber 222 and main casing by cap and attend that anechoic chamber 131 is common to cooperate attending in the anechoic chamber of forming through the air entraining pipe air outlet of air entraining pipe 1312; Cap air inlet tube chamber 22211 from cap suction tude 2221 gets into cap steam outlet pipe 2231 again; Give vent to anger tube chamber 22311 entering by in the following anechoic chamber that anechoic chamber 132 constitutes jointly under anechoic chamber under the cap 223 and the main casing by the cap of cap steam outlet pipe 2231; After filter screen 15 filters, get into the transition ventilation tube chamber 13111 of transition breathing pipes 1311 again through the main casing ventilation tube chamber 13211 of main casing breathing pipe 1321, and then give vent to anger cavity 143 back of interface 14 by the suction valve of main casing air outlet 141 introducing refrigeration compressors through main casing.

In sum; Technological scheme provided by the invention has overcome the shortcoming in the prior art all sidedly; Accomplished the invention task, embodied the technique effect described in the technique effect hurdle that the claimant mentions objectively in the above, thereby to can yet be regarded as be a ultimate attainment technological scheme

Claims (9)

1. a kind of compressor air suction silencer; Comprise the cap (2) that a main casing (1) and matches with main casing (1); Main casing (1) has main casing air aspiration cavity (11), main casing suction port (12), main casing anechoic chamber (13), is used for the filter screen (15) that refrigerant gas matched with the suction valve of refrigeration compressor and that main casing that have main casing air outlet (141) is given vent to anger interface (14) and is used for that main casing suction port (12) is introduced filters; Cap (2) has cap air aspiration cavity (21) and cap anechoic chamber (22); Wherein: described main casing air aspiration cavity (11) is positioned at an end of main casing (1); Described main casing suction port (12) is positioned between described main casing air aspiration cavity (11) and main casing anechoic chamber (13); And communicate with main casing anechoic chamber (13) with main casing air aspiration cavity (11) simultaneously; The described main casing interface (14) of giving vent to anger extends on the outer wall of a side of the length direction be formed in main casing (1); Described main casing air outlet (141) communicates with main casing anechoic chamber (13), and described cap air aspiration cavity (21) is corresponding with said main casing air aspiration cavity (11) and match, and described cap anechoic chamber (22) is corresponding with described main casing anechoic chamber (13) and match; It is characterized in that: in described main casing anechoic chamber (13) and from an end to the other end of the length direction of main casing anechoic chamber (13), constitute a pair of parallel clamping plate (16); This is to constituting a plugboard trough (161) between the clamping plate (16); The main casing that described main casing anechoic chamber (13) is divided into top by a pair of clamping plate (16) is attend anechoic chamber (132) under the main casing of anechoic chamber (131) and bottom; In described main casing is attend anechoic chamber (131) and in the position of the interface (14) of giving vent to anger corresponding to described main casing, constitute one with the main casing transition breathing pipe (1311) that interface (14) is connected of giving vent to anger; The transition ventilation tube chamber (13111) of this transition breathing pipe (1311) communicates with described main casing air outlet (141); And the length direction of in main casing is attend anechoic chamber (131), attending anechoic chamber (131) along main casing constitute one communicate with described main casing suction port (12) be used for will introduce said main casing by the refrigerant gas that main casing suction port (12) is introduced and attend the air entraining pipe (1312) in the anechoic chamber (131); And under described main casing, constitute the main casing breathing pipe (1321) that is connected with transition breathing pipe (1311) in anechoic chamber (132) and in position corresponding to described transition breathing pipe (1311); The main casing ventilation tube chamber (13211) of this main casing breathing pipe (1321) communicates with said transition ventilation tube chamber (13111); And with main casing under anechoic chamber (132) communicate, described filter screen (15) is arranged on the position of the main casing breathing pipe suction port (13212) of main casing breathing pipe (1321); In described cap anechoic chamber (22) and in position, constitute the plate (221) that the length of length and plugboard trough (161) adapts corresponding to described plugboard trough (161); This plate (221) inserts in the said plugboard trough (161); And attend anechoic chamber (223) under the cap of anechoic chamber (222) and bottom by the cap that this plate (221) is divided into top with said cap anechoic chamber (22); Cap is attend anechoic chamber (222) and is attend anechoic chamber (131) with described main casing and match; And under the cap under anechoic chamber (223) and the described main casing anechoic chamber (132) match; Wherein: in described cap is attend anechoic chamber (222) and the top that is positioned at plate (221) constitute a cap suction tude (2221); The cap air inlet tube chamber (22211) and the described cap of this cap suction tude (2221) attend anechoic chamber (222) and communicated; In the anechoic chamber under described cap (223) and the below that is positioned at plate (221) constitutes a cap steam outlet pipe (2231) in the position corresponding to described cap suction tude (2221); The cap of this cap steam outlet pipe (2231) tube chamber (22311) of giving vent to anger communicates with described cap air inlet tube chamber (22211); And with cap under anechoic chamber (223) communicate; (15 comprise a filter screen body (151) and screen frame (152) to described filter screen; Filter screen body (151) is by spacer screen sheet (1511) and center on side net sheet (1512) formation that making progress of spacer screen sheet (1511) swelled all around; And by side net sheet (1512) protuberance and filter screen body (151) is formed have filtering cavity the pocket structure of (1513) upwards around spacer screen sheet (1511), screen frame (152) is fixing with the main casing breathing pipe suction port (13212) of said main casing breathing pipe (1321), and this screen frame (152) be the upper edge of a described side net sheet (1512) repeat the folding folded formation that constitutes or be one separately configuration and with the fixing ring body in the upper edge of side net sheet (1512).

2. compressor air suction silencer according to claim 1; It is characterized in that the described main casing interface (14) of giving vent to anger is positioned at the middle position of outer wall of a side of the length direction of said main casing (1), and respectively be extended with the positioning boss (142) that is used for the refrigeration compressor assembling in the give vent to anger corresponding both sides of outer wall of interface (14) of this main casing.

3. compressor air suction silencer according to claim 1 is characterized in that the shape of cross section of described transition breathing pipe (1311) and described main casing breathing pipe (1321) is all rectangular or circular.

4. compressor air suction silencer according to claim 1; The width that it is characterized in that described plugboard trough (161) is suitable with the thickness of said plate (221), plate (221) go up and corresponding to said transition breathing pipe (1311) and main casing) position that borders on of body breathing pipe (1321) constitutes the chamber (2211) of stepping down.

5. compressor air suction silencer according to claim 1 is characterized in that on described cap (2) and in the position corresponding to described main casing suction port (12), constituting one and is used to avoid main casing suction port (12) is produced the cavity of stepping down (23) of interfering.

6. compressor air suction silencer according to claim 1; It is characterized in that constituting towards the position, edge of a side of described cap (2) the main casing sealed convex edge (17) of a perforation at described main casing (1); And constituting a sealed convex edge caulking groove (24) towards the position, edge of a side of main casing (1) at cap (2), described main casing sealed convex edge (17) is placed in the sealed convex edge caulking groove (24).

7. compressor air suction silencer according to claim 1; It is characterized in that when the shape of cross section of described main casing breathing pipe (1321) is rectangular; The rectangular ring bodies of shape of described screen frame (152), the said side net sheet (1512) of described filter screen body (151) has four sidewalls.

8. compressor air suction silencer according to claim 1; It is characterized in that when the shape of cross section of described main casing breathing pipe (1321) is rounded; The shape of described screen frame (152) is cirque body, and the side net sheet (1512) of described transition net body (151) forms cylindrical body.

9. Compressor air suction silencer according to claim 1; It is characterized in that when the shape of cross section of described main casing breathing pipe (1321) is equilateral triangle or hexagon; The shape of said screen frame (152) is equilateral triangle or hexagon equally, and the side net sheet (1512) of described transition net body (151) is the hexagonal prism that has the triangular prism of three sidewalls or have six sidewalls

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