CN215370162U

CN215370162U - Silencing structure for compressor

Info

Publication number: CN215370162U
Application number: CN202121732172.XU
Authority: CN
Inventors: 宋国华; 杨兴标; 孙宇清; 陈宁; 施峰; 罗云
Original assignee: Zhejiang Bingfeng Compressor Co ltd
Current assignee: Zhejiang Bingfeng Compressor Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2021-12-31
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a silencing structure for a compressor, which comprises a cylinder body casting body, wherein an air cylinder and a silencer are arranged on the cylinder body casting body, a valve group and a high-pressure air delivery hole are arranged on the end surface of the cylinder body of the air cylinder, the air cylinder is communicated with the silencer through the valve group and the high-pressure air delivery hole, the silencer comprises a casting base and a cover plate, the cover plate is buckled with the casting base to form a silencing cavity, a partition plate is arranged between the casting base and the cover plate, the partition plate partitions the silencing cavity into a lower silencing cavity and an upper silencing cavity, and a throttling hole is formed in the partition plate and communicates the lower silencing cavity with the upper silencing cavity. The utility model can be switched to use on two structures of a single-cavity silencer and a double-cavity silencer, and only the single-cavity silencer can sufficiently muffle and throttle on a machine type with small discharge capacity; on the model that the discharge capacity is big, the accessible installs the mode of baffle additional, separates into two-chamber with former single chamber, and twice throttle effect has improved the air current pressure pulsation problem greatly, forms two sections resistance muffler structures noise cancelling effect better, synthesizes the price/performance ratio height.

Description

Silencing structure for compressor

Technical Field

The utility model relates to the technical field of refrigerator compressors, in particular to a silencing structure for a compressor.

Background

The piston compressor is a mechanical equipment for compressing low-pressure gas into high-pressure gas by means of reciprocating motion of a piston, and generally comprises a suction system, a motion compression system and a high-pressure output system. The air suction system is used for sucking low-pressure gas coming from the outside into the air cylinder of the compressor so as to enable the motion compression system to compress the gas in the air cylinder, the compressed high-pressure gas is firstly stored in the air cylinder cover, enters the high-pressure cavity silencer through the high-pressure gas channel and then flows out of the compressor through the inner exhaust pipe to enter the refrigeration system.

The high pressure chamber muffler of a compressor is an extremely important component. On one hand, high-pressure gas from a compressor cylinder generates large noise when flowing through the whole high-pressure output system, and needs a high-pressure cavity silencer for silencing; on the other hand, because the piston compressor compresses gas by changing the volume of the cylinder through the reciprocating motion of the piston, the pressure of high-pressure gas in the cylinder cover has obvious pressure pulsation, and the over-high pressure pulsation can cause the vibration of a refrigeration pipeline, particularly a condenser pipe, of the refrigerator body, so that the vibration and the noise of the refrigerator body exceed the standard.

At present, two high-pressure chamber silencers are commonly available on the market, one high-pressure chamber silencer is of a single-chamber silencer structure, the high-pressure chamber silencer is simple in structure and low in cost, but the high-pressure gas pressure pulsation value is too high due to the fact that the high-pressure chamber silencer only has one chamber and only has a throttling effect. The other is a traditional double-cavity silencer structure, the double-cavity silencer structure is characterized in that two cavities are directly formed in the casting process, then a small throttling hole is machined to penetrate through the two cavities, or a bundy pipe is used for communicating the two cavities to achieve throttling. The double-cavity silencer structure is excellent in performance, but due to the design of the two cavities, the material consumption cost and the processing cost are high, and the comprehensive cost performance is general.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide a muffler structure for a compressor, which overcomes the above-mentioned disadvantages of the prior art.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a amortization structure for compressor, includes cylinder body foundry goods body, be provided with cylinder and muffler on the cylinder body foundry goods body, be provided with valves and high-pressure gas transmission hole on the cylinder body terminal surface of cylinder, the cylinder passes through valves and high-pressure gas transmission hole and muffler intercommunication, the muffler including set up in casting base on the cylinder body foundry goods body and set up in apron on the casting base, the apron forms the muffler with casting base lock, be provided with interior exhaust pipe on the apron, interior exhaust pipe with the amortization chamber intercommunication of muffler.

Furthermore, a partition plate is arranged between the casting base and the cover plate, the partition plate divides the silencing cavity into a lower silencing cavity and an upper silencing cavity, and the partition plate is provided with a throttling hole which communicates the lower silencing cavity with the upper silencing cavity.

Furthermore, throttle pipes are respectively arranged on the upper side and the lower side of the throttle hole, and the heights of the throttle pipes are 1/4-1/2 corresponding to the heights of the silencing cavities.

Furthermore, a first sealing gasket is arranged between the partition plate and the casting base, and a second sealing gasket is arranged between the partition plate and the cover plate.

Furthermore, a first annular mounting surface is arranged at the top of the casting base, a second annular mounting surface matched with the bottom end of the cover plate is arranged at the bottom end of the cover plate, a third annular mounting surface matched with the periphery of the partition plate is arranged at the periphery of the partition plate, the first sealing gasket is arranged between the first annular mounting surface and the third annular mounting surface, and the second sealing gasket is arranged between the second annular mounting surface and the third annular mounting surface.

Furthermore, the bottom is provided with the screw hole in the casting base, correspond on apron and the baffle and be provided with the screw through-hole, the apron pass through the screw with the casting base is connected.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the utility model only approximately equals to the consumable material of the single-cavity silencer in structural design, namely only one casting base and one single cover plate are cast to form a closed high-pressure cavity, thus keeping the advantage of low cost of the single-cavity silencer; in performance, the utility model can be switched to use on two structures of a single-cavity silencer and a double-cavity silencer, namely, on a machine type with smaller displacement, only the single-cavity silencer can sufficiently silence and throttle due to low exhaust noise and small pressure pulsation; on the machine type with larger displacement, the original single cavity can be divided into double cavities by additionally arranging the throttling partition plate with low cost, the problem of air flow pressure pulsation is greatly improved by twice throttling action, the silencing effect of the double-section resistance silencer structure is better, and the comprehensive cost performance is extremely high.

Drawings

FIG. 1 is a schematic view of a single chamber muffler according to the present invention;

FIG. 2 is a schematic view of a dual chamber muffler of the present invention;

FIG. 3 is a schematic view of the construction of the separator according to the present invention;

FIG. 4 is a schematic cross-sectional view of FIG. 3;

fig. 5 is a schematic view of the cover plate structure of the present invention.

In the figure: 1. a cylinder block casting body; 2. a cylinder; 3. casting a base; 4. a cover plate; 5. an inner exhaust pipe; 6. a partition plate; 7. a valve block; 8. a high pressure gas transmission hole; 9. an orifice; 10. a throttle pipe; 11. a first sealing gasket; 12. a second sealing gasket; 13. a first annular mounting surface; 14. a second annular mounting surface; 15. a third annular mounting surface; 16. a threaded hole; 17. and (4) screws.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the noise reduction structure for a compressor according to the present invention includes a cylinder casting body 1, wherein a cylinder 2 and a muffler are disposed on the cylinder casting body 1, and the cylinder 2 is provided with a cylindrical cylinder hole, which is a location where a piston reciprocates to compress a refrigerant; the silencer comprises a casting base 3 arranged on the cylinder body casting body 1 and a cover plate 4 arranged on the casting base 3, the casting base is arranged near the cylinder and is a cylindrical shell with an opening at the upper end, and the cover plate 4 and the casting base 3 are buckled to form the silencer; the end face of the cylinder body of the cylinder 2 is provided with a valve group 7 and a high-pressure air delivery hole 8, the end face of the cylinder body of the cylinder is a plane with the end part perpendicular to a cylinder hole of the cylinder, the end face of the cylinder body is provided with a screw hole for installing a valve group system, the high-pressure air delivery hole 8 is a small channel penetrating through the end face of the cylinder body and the casting base 3, and the cylinder 2 is communicated with a silencer through the valve group 7 and the high-pressure air delivery hole 8; be provided with interior exhaust pipe hole on the 4 top edges of apron, be equipped with interior exhaust pipe 5 on the interior exhaust pipe hole, interior exhaust pipe 5 can extend to the amortization intracavity to it is sealed to weld to braze, interior exhaust pipe 5 and amortization chamber intercommunication.

Further, as shown in fig. 2-5, in the embodiment of the present invention, when the muffler is a dual-cavity muffler, a partition plate 6 is disposed between the casting base 3 and the cover plate 4, the partition plate 6 partitions the muffler cavity into a lower muffler cavity and an upper muffler cavity, an orifice 9 is disposed at the top edge of the partition plate 6, and the orifice 9 communicates the lower muffler cavity with the upper muffler cavity.

Furthermore, throttle pipes 10 are respectively arranged on the upper side and the lower side of the throttle hole 9, the height of each throttle pipe is 1/4-1/2 corresponding to the height of the silencing cavity, the insertion depth of the throttle pipe in the upper silencing cavity is controlled to be 1/4, the insertion depth of the throttle pipe in the lower silencing cavity is controlled to be 1/2, or the insertion depth of the throttle pipe in the upper silencing cavity is controlled to be 1/2, and the insertion depth of the throttle pipe in the lower silencing cavity is controlled to be 1/4. Because the throttle pipe is inserted into the upper silencing cavity and the lower silencing cavity according to a special proportion, the resistance silencer structure is made, and the silencing performance is excellent.

Further, the inner exhaust pipe 5 can extend into the silencing cavity, and the length of the inner exhaust pipe is 1/4 of the height of the upper silencing cavity, so that the silencing performance is enhanced.

Further, a first sealing gasket 11 is arranged between the partition plate 6 and the casting base 3, and a second sealing gasket 12 is arranged between the partition plate 6 and the cover plate 4.

Further, a first annular mounting surface 13 is arranged at the top of the casting base 3, a second annular mounting surface 14 matched with the bottom end of the cover plate 4 is arranged at the bottom end of the casting base, a third annular mounting surface 15 matched with the periphery of the partition plate 6 is arranged at the periphery of the partition plate, the first sealing gasket 11 is arranged between the first annular mounting surface 13 and the third annular mounting surface 15, and the second sealing gasket 12 is arranged between the second annular mounting surface 14 and the third annular mounting surface 15.

Further, a threaded hole 16 is formed in the bottom of the casting base 3, screw through holes are correspondingly formed in the cover plate 4 and the partition plate 6, and the cover plate 4 is connected with the casting base 3 through a screw 17 to form a closed high-pressure silencing cavity.

Further, apron 4 is the cylindrical lid of the lower open-ended that the diameter is the same with casting base 3, highly is higher than current apron commonly used, and the apron is a kind of punching press or deep-drawing piece, apron top center is provided with the boss plane, and the screw through-hole sets up on the boss plane, apron boss plane need guarantee the flatness and roughness, guarantees sealed effect.

Further, the partition plate 6 is a lower opening cylindrical cover similar to a cover plate in structure, the diameter and the height of the lower opening cylindrical cover are smaller than those of the cover plate, the partition plate is one of stamping or deep drawing pieces, and the screw through hole is formed in the center of the top end of the partition plate 6.

Further, the valve group 7 is a general valve system component of a refrigerator compressor.

The working principle is as follows: the discharge capacity of the compressor is not large, the requirements for silencing and throttling of the high-pressure cavity are not high, the single-cavity silencer mode is used, the partition plate is removed, high-pressure gas with periodic pressure fluctuation coming out of the cylinder flows through the valve group and the high-pressure gas transmission hole to enter the silencing cavity, a primary throttling effect is generated, the high-pressure gas with reduced pressure pulsation enters the inner exhaust pipe of the cover plate through silencing of the single-cavity silencer and finally flows out of the compressor, and the effects of silencing of the single-cavity silencer and reducing pulsation through single throttling are achieved.

When the displacement of the compressor is large and the requirements of silencing and throttling of the high-pressure cavity are high, the double-cavity silencing mode is used, high-pressure gas with periodic pressure fluctuation from an air cylinder flows through the valve group and the high-pressure gas transmission hole to enter the lower silencing cavity, a first throttling effect is generated, pressure pulsation is reduced, then the high-pressure gas flows through the throttling pipe of the partition plate to enter the upper silencing cavity, a second throttling effect is generated, the pressure pulsation is reduced again, and finally the high-pressure gas enters the inner exhaust pipe to flow out of the compressor.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a amortization structure for compressor, its characterized in that, includes cylinder body foundry goods body (1), be provided with cylinder (2) and muffler on cylinder body foundry goods body (1), be provided with valves (7) and high-pressure gas transmission hole (8) on the cylinder body terminal surface of cylinder (2), cylinder (2) are through valves (7) and high-pressure gas transmission hole (8) and muffler intercommunication, the muffler including set up in casting base (3) on cylinder body foundry goods body (1) and set up in apron (4) on casting base (3), apron (4) and casting base (3) lock form the muffler, be provided with interior exhaust pipe (5) on apron (4), interior exhaust pipe (5) with the amortization chamber intercommunication of muffler.

2. A silencing structure for compressor as defined in claim 1, wherein a partition plate (6) is disposed between said cast base (3) and said cover plate (4), said partition plate (6) separates said silencing chamber into a lower silencing chamber and an upper silencing chamber, said partition plate (6) is provided with a throttle hole (9), and said throttle hole (9) communicates said lower silencing chamber with said upper silencing chamber.

3. A silencing structure for compressor as claimed in claim 2, wherein throttle pipes (10) are respectively provided on upper and lower sides of the throttle hole (9), and the height of the throttle pipe (10) is 1/4-1/2 corresponding to the height of the silencing chamber.

4. A sound-deadening structure for a compressor as claimed in claim 2, wherein a first packing (11) is provided between the partition plate (6) and the cast base (3), and a second packing (12) is provided between the partition plate (6) and the cover plate (4).

5. A sound-deadening structure for a compressor according to claim 4, wherein a first annular mounting surface (13) is provided on a top of the cast base (3), a second annular mounting surface (14) adapted to the bottom end of the cover plate (4), a third annular mounting surface (15) adapted to the periphery of the partition plate (6), the first packing (11) is provided between the first annular mounting surface (13) and the third annular mounting surface (15), and the second packing (12) is provided between the second annular mounting surface (14) and the third annular mounting surface (15).

6. A silencing structure for compressor as claimed in claim 2, wherein the casting base (3) is provided with a threaded hole (16) at the bottom, the cover plate (4) and the partition plate (6) are correspondingly provided with a screw through hole, and the cover plate (4) is connected with the casting base (3) through a screw (17).