CN215486458U - Sealing silencing structure of compressor - Google Patents
Sealing silencing structure of compressor Download PDFInfo
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- CN215486458U CN215486458U CN202121387606.7U CN202121387606U CN215486458U CN 215486458 U CN215486458 U CN 215486458U CN 202121387606 U CN202121387606 U CN 202121387606U CN 215486458 U CN215486458 U CN 215486458U
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Abstract
The utility model discloses a sealed silencing structure of a compressor, wherein the compressor comprises a cylinder seat (3) and a silencing cover (1), and the silencing cover (1) is arranged on the cylinder seat (3) through a fastening screw (2); the outer end of the through hole of the fastening screw (2) is arranged on the silencing cover (1), and a sealing boss (1.2) is arranged. By adopting the technical scheme, the structure is simple; the manufacturing and using cost is greatly reduced, the sealing device is stable and reliable, the sealing effect is better, and the application range is wide.
Description
Technical Field
The utility model belongs to the technical field of compressor silencing sealing structures, and relates to an exhaust high-pressure cavity sealing structure of a compressor.
Background
The sealing structure of the cylinder seat high-pressure cavity used at the present stage is that a copper sheet gasket is placed on a fastening screw, an exhaust silencing cavity is placed on the cylinder seat high-pressure cavity, a screw is fastened by using torque, a contact surface is formed between the gasket surface and the upper part of a silencing cover, the upper part of the silencing cover and the screw are sealed by using the better metal ductility of the copper sheet gasket through downward fastening force, and finally the aim of fastening the silencing cavity without air leakage is achieved.
The existing sealing structure of the silencing cover basically adopts a metal copper sheet gasket as an intermediate sealing material, and due to the fact that the price of metal copper is high and the price of raw materials is increased, the cost of enterprises is increased greatly, and a method which replaces the structural design and the material application of metal raw materials and can achieve the sealing effect with the same effect is needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealing silencing structure of a compressor, and aims to improve the sealing performance of the silencing structure and reduce the production cost.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model relates to a sealed silencing structure of a compressor, which comprises a cylinder seat and a silencing cover, wherein the silencing cover is arranged on the cylinder seat through a fastening screw; the silencing cover is provided with a sealing boss at the outer end of the through hole for installing the fastening screw.
The protruding height of the sealing boss is 0.35-0.65 mm.
The minimum value of the radial width of the annular sealing surface of the sealing boss contacted with the fastening screw is 0.3 mm.
The bolt hole opening of the sealing boss for installing the fastening screw is provided with a boss inner edge chamfer of 0.1-0.2 mm; the outer edge of the sealing boss is provided with a boss outer edge chamfer, the boss outer edge chamfer is an arc chamfer R, and the minimum value of the R is 0.1 mm.
The root of a screw rod of the fastening screw is provided with a screw root chamfer, the screw root chamfer is in arc transition, and the maximum radius of the arc is not more than 0.25 mm.
In order to achieve the same purpose as the technical scheme, the utility model also provides an assembling method of the sealing and noise-reducing structure of the compressor, which comprises the following steps:
placing the silencing cover on a high-pressure cavity of the cylinder seat;
the fastening screw penetrates through a bolt hole of the silencing cover, the thread of the fastening screw is screwed into a threaded hole of the cylinder seat, and a screw fastening tool is used for pre-tightening the fastening screw, wherein the pre-tightening torque is 1.5-3 Nm;
the mounting position condition of the silencing cover is checked and adjusted to ensure the correct assembly; checking and adjusting whether the assembling position of the fastening screw is correct, whether the fastening screw is loosened or abnormal swinging exists;
and after the inspection and the adjustment are finished, screwing the fastening screw by using a screw fastening tool, wherein the fastening torque is 8-9 Nm.
Further, in order to better achieve the purpose of the utility model, the utility model also provides the following technical scheme (another structure):
on the basis of the first structure, a high-temperature-resistant sealant coating is arranged between the annular sealing surface of the sealing boss and the screw pressing surface of the fastening screw.
In order to achieve the same purpose as the technical scheme, the utility model also provides an assembling method of the sealing and noise-reducing structure of the compressor, which comprises the following steps:
placing the silencing cover on a high-pressure cavity of the cylinder seat;
coating high-temperature-resistant sealant on the annular sealing surface of the sealing boss;
the fastening screw penetrates through a bolt hole of the silencing cover, the thread of the fastening screw is screwed into a threaded hole of the cylinder seat, and a screw fastening tool is used for pre-tightening the fastening screw, wherein the pre-tightening torque is 1.5-3 Nm;
and then, a screw fastening tool is used for screwing the fastening screw, and the fastening torque is 5.5-7.5 Nm.
Further, in order to better achieve the purpose of the utility model, the utility model also provides the following technical scheme:
the third compressor sealing silencing structure comprises a cylinder seat and a silencing cover, wherein the silencing cover is pressed into a spigot of the cylinder seat and forms tight fit; and a coating of high-temperature-resistant sealant is arranged on the joint surface of the silencing cover and the cylinder seat.
Similarly, the utility model also provides a third assembling method of the compressor sealing silencing structure, which adopts the technical scheme that:
the cylinder seat is placed on a tooling plate which is movably positioned;
before the silencing cover is pressed into the spigot of the cylinder seat, coating high-temperature-resistant sealant on the joint surface of the silencing cover and the cylinder seat;
placing the silencing cover into a spigot of the glued cylinder seat, jacking the tooling plate through a mechanical jacking mechanism, driving a press machine downwards, and pressing the upper end face of the silencing cover through a pressing head for 30-50 seconds;
high-temperature-resistant sealant is additionally coated at the outer part and the inner gap of the joint surface of the cylinder seat, and the silencing cover is fully and tightly connected with the spigot of the cylinder seat;
and after the pressure head is pressed for a certain time, the tooling plate descends to complete gluing and sealing connection.
By adopting the technical scheme, the deformation filling seal of the convex sealing surface is used for replacing the copper gasket seal, and a copper gasket does not need to be threaded on a screw, so that the structure is simple; because the convex sealing surface is a steel piece, the hardness and the strength are higher than those of a copper gasket, and the rebound acting force is larger after deformation is generated, the rebound acting force can effectively fill the gap between the pressing surface of the screw and the convex sealing surface of the silencing cover, and the sealing effect is better than or at least not lower than that of the screw connection with the copper gasket in the prior art; furthermore, the utility model can also set up the heat-resisting sealant coating between the annular sealing surface of the seal boss and screw pressing surface of the fastening screw, utilize the fastening of the screw to make the rubber coating connect the screw pressing surface and protruding sealing surface of the sound attenuation lid together closely, form the tight seal; in addition, the utility model can seal the silencing cover and the cylinder seat by high-temperature-resistant sealant instead of adopting a screw fastening mode, so that the manufacturing and using cost is greatly reduced, the connection is stable and reliable, the sealing effect is better, and the application range is wider.
Drawings
The contents of the drawings and the reference numbers in the drawings are briefly described as follows:
FIG. 1 is a schematic view of the structural configuration of a prior art muffler cover;
FIG. 2 is a schematic structural profile of a prior art screw;
FIG. 3 is a perspective view of the mounting structure of the present invention;
FIG. 4 is a schematic structural view of a silencing cover according to the present invention;
FIG. 5 is a schematic view of the structure of the screw according to the present invention;
FIG. 6 is a cross-sectional view of FIG. 3 taken along two binding screw axes;
fig. 7 is a schematic structural view of the present invention without using a fastening screw.
Labeled as:
1. the noise reduction cover comprises 1.1 parts of lug boss outer edge chamfers, 1.2 parts of sealing lug bosses, 1.3 parts of lug boss inner edge chamfers, 2 parts of fastening screws, 2.1 parts of lengthened threads, 2.2 parts of screw root chamfers, 2.3 parts of screw pressing surfaces, 3 parts of cylinder seats, 4 parts of protrusion heights, 5 parts of high-temperature-resistant sealant coatings.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
The structure of the utility model as shown in fig. 3 to fig. 6 is a sealing noise reduction structure of a compressor, the compressor comprises a cylinder block 3 and a noise reduction cover 1, and the noise reduction cover 1 is arranged on the cylinder block 3 through a fastening screw 2.
In order to overcome the defects of the prior art and achieve the purposes of improving the sealing performance of the silencing structure and reducing the production cost, the technical scheme adopted by the utility model comprises the following embodiments:
in the first embodiment, as shown in fig. 4:
the utility model improves the silencing cover, cancels the copper gasket screw and improves the cylinder block, namely: in the sealing and silencing structure of the compressor, the silencing cover 1 is provided with the outer end of the through hole of the fastening screw 2 and a sealing boss 1.2.
The utility model overcomes the defects of the prior art, adopts the method of canceling the copper gasket and improving the sound-absorbing cover, the screw and the cylinder seat, realizes the purpose of reducing the cost and realizes the requirement of effective sealing. The cost of the existing silencing fastening structure is reduced, and the technical index required by the fastening process of the compressor is met.
In order to realize that the plane can closely laminate under the sealed face of boss and fastening screw 2's the nut to prevent that the planar burr of boss from influencing the complex sealed effect, carry out the chamfer to sealed face 1.2 outer fringe 1.1 of boss and inner edge 1.3 and handle, concrete structure is:
the sealing surface of the silencing cover is a convex sealing surface, and the convex height 4 (H in figure 6) of the sealing boss 1.2 is 0.35-0.65 mm.
The silencing cover 1 is provided with a sealing boss 1.2, and the top surface of the boss forms a boss sealing surface.
The minimum value of the radial width of the annular sealing surface of the sealing boss 1.2 contacted with the fastening screw 2 is 0.3 mm. The width of the sealing surface is uniform.
According to a pressure formula of P ═ F/S, the fastening torque is constant, and the smaller the area of action of acting force is, the larger the pressure is; sealed boss 1.2 is better with fastening screw 2 sealed cooperation effect, increases the requirement that the plane degree error is not more than 0.04 ~ 0.06 to the little boss plane of amortization lid 1 simultaneously, avoids leading to sealed not tight etc. because of the contact surface unevenness unusual.
Because the price of metal raw materials is rising day by day, through changing the current amortization lid plane structure into the little boss structure that increases height H and replace the copper sheet packing ring of current structure, fastening screw 2 and amortization lid 1 area of contact reduce, under same fastening torque, area of contact is littleer, and sealed effect is better, also greatly reduced on manufacturing cost.
The bolt hole of the sealing boss 1.2 for installing the fastening screw 2 is provided with a boss inner edge chamfer 1.3 which is 0.1-0.2 mm;
the inner edge chamfer 1.3 of the boss accommodates the technological forming of the pressing surface 2.3 of the fastening screw.
The outer edge of the sealing boss 1.2 is provided with a boss outer edge chamfer 1.1, the boss outer edge chamfer 1.1 is an arc chamfer R, and the minimum value of the R is 0.1 mm.
The root of the screw rod of the fastening screw 2 is provided with a screw root chamfer 2.2, the screw root chamfer 2.2 is in arc transition, and the maximum radius of the arc is not more than 0.25 mm.
The root of the fastening screw 2 is chamfered 2.2, and the inner edge chamfer 1.3 of the small lug boss of the silencing cover forms a cavity to accommodate the inner edge chamfer, so that the silencing cover 1 and the fastening screw 2 can be more smooth in matching.
The fastening screw 2 is without a washer; wherein the thread length of the tightening screw 2 is increased by the thickness of a copper washer, i.e. the elongated thread 2.1 in the figure. Meanwhile, the depth of the threaded hole of the high-pressure silencing cavity of the cylinder seat 3 matched with the threaded hole is increased by the thickness of a copper gasket, namely H is deepened.
In order to achieve the utility model purpose of the sealing structure of the exhaust high-pressure cavity of the compressor, the utility model also provides an assembling method of the sealing silencing structure of the compressor, which comprises the following steps:
placing the silencing cover 1 on a high-pressure cavity of a cylinder seat 3;
the fastening screw 2 penetrates through a bolt hole of the silencing cover 1, the thread of the fastening screw 2 is screwed into a threaded hole of the cylinder block 3, and the fastening screw 2 is pre-tightened by using a screw fastening tool, wherein the pre-tightening torque is 1.5-3 Nm;
the mounting position condition of the silencing cover 1 is checked and adjusted to ensure the correct assembly; checking and adjusting whether the assembling position of the fastening screw 2 is correct, whether the fastening screw looses or swings abnormally;
and after the inspection and the adjustment are finished, the fastening screw 2 is screwed by using a screw fastening tool, and the fastening torque is 8-9 Nm.
In the process that the external thread of the fastening screw 2 is screwed into the threaded hole in the high-pressure cavity of the cylinder seat 3, the fastening screw 2 enables the convex sealing surface of the silencing cover 1 to be slowly deformed, the fastening screw 2 slowly extends into the high-pressure cavity of the cylinder seat along with the increase of the moment, the deformation of the convex sealing surface is continuously increased until all gaps between the screw pressing surface 2.2 and the convex sealing surface are filled, and the purpose of fastening and sealing is achieved.
The fastening screw 2 forms a chamfer angle in the manufacturing process, and can be contacted with the convex sealing surface of the silencing cover firstly in the pressing process of the chamfer angle, so that the screw pressing surface 2.2 is jacked up, therefore, the chamfer angle on the inner side of the convex sealing surface of the silencing cover 1 is used for accommodating the chamfer angle, the pressing surface is ensured to be contacted with the convex sealing rib of the silencing cover 1 firstly, and the fitting is ensured to be tight.
The convex sealing surface of the silencing cover is provided with an outer chamfer, the burr and the flanging of the convex sealing surface of the silencing cover can be removed due to the existence of the outer chamfer, and the burr and the flanging can be contacted with the screw pressing surface 2.2 in advance when the screw is pressed down, so that the abnormal conditions that the convex sealing surface of the silencing cover and the screw pressing surface are not tight in sealing can be caused.
Example two:
in order to further improve the sealing effect of the noise reduction structure, on the basis of the first embodiment, a high-temperature resistant sealant coating layer 5 is arranged between the annular sealing surface of the sealing boss 1.2 and the screw pressing surface 2.3 of the fastening screw 2.
The high-temperature-resistant sealant is formed by polymerizing high-performance heat-resistant resin and various heat-resistant materials, and has the characteristics of high bonding strength, good sealing property, high temperature resistance (300-. Generally, the sealant which can resist 350 ℃ is prepared by mechanically mixing and vacuum treating basic resin, high-purity filler, electronic grade active diluent, high-grade auxiliary agent and processing auxiliary agent.
In order to achieve the purpose of the sealing structure of the exhaust high-pressure cavity of the compressor in the second embodiment, the utility model also provides an assembling method of the sealing and noise reduction structure of the compressor, which comprises the following steps:
placing the silencing cover 1 on a high-pressure cavity of a cylinder seat 3;
coating high-temperature-resistant sealant on the annular sealing surface of the sealing boss;
the fastening screw 2 penetrates through a bolt hole of the silencing cover 1, the thread of the fastening screw 2 is screwed into a threaded hole of the cylinder block 3, and the fastening screw 2 is pre-tightened by using a screw fastening tool, wherein the pre-tightening torque is 1.5-3 Nm;
and then the fastening screw 2 is tightened by using a screw fastening tool, and the fastening torque is 5.5-7.5 Nm.
The other structures were analyzed in the same manner as in the first embodiment.
Example three, as shown in fig. 7:
in order to further improve the sealing performance of the compressor noise reduction sealing structure, simplify the structure and reduce the production cost, the utility model also provides another bolt-free compressor noise reduction sealing structure, and the technical scheme is as follows:
the compressor comprises a cylinder seat 3 and a silencing cover 1, wherein the silencing cover 1 is pressed into a spigot of the cylinder seat 3 and forms tight fit; and a coating of high-temperature-resistant sealant is arranged on the joint surface of the silencing cover 1 and the cylinder seat 3.
As with the scheme with the bolt, the utility model applies the high-temperature-resistant sealant, and improves the sealing performance and the processing manufacturability. By adopting the technical scheme, the utility model has the advantages of simpler structure, further reduced manufacturing and using cost and stable and reliable performance. The technical effect is further improved compared with the bolt.
Similarly, the utility model also provides an assembling method of the sealing and silencing structure of the compressor, and the technical scheme is as follows:
before the silencing cover 1 is pressed into a spigot of the cylinder block 3, coating high-temperature-resistant sealant on a joint surface of the silencing cover 1 and the cylinder block 3; after the silencing cover 1 is pressed into a spigot of the cylinder block 3, high-temperature-resistant sealant is additionally coated at an external gap of a joint surface of the silencing cover.
The cylinder seat is placed on a tooling plate which is movably positioned;
before the silencing cover 1 is pressed into a spigot of the cylinder block 3, coating high-temperature-resistant sealant on a joint surface of the silencing cover 1 and the cylinder block 3;
placing the silencing cover 1 into the spigot of the glued cylinder block 3, jacking the tooling plate through a mechanical jacking mechanism, driving a press machine downwards, and pressing the upper end face of the silencing cover through a pressing head for 30-50 seconds;
high-temperature-resistant sealant is additionally coated at the outer part and the inner gap of the joint surface of the cylinder block, and the silencing cover 1 is fully and tightly connected with the spigot of the cylinder block 3;
and after the pressure head is pressed for a certain time, the tooling plate descends to complete gluing and sealing connection.
The utility model has been described above with reference to the accompanying drawings, it is obvious that the utility model is not limited to the specific implementation in the above-described manner, and it is within the scope of the utility model to apply the inventive concept and solution to other applications without substantial modification.
Claims (7)
1. A compressor sealing silencing structure comprises a cylinder seat (3) and a silencing cover (1), wherein the silencing cover (1) is arranged on the cylinder seat (3) through a fastening screw (2); the method is characterized in that: the outer end of the through hole of the fastening screw (2) is arranged on the silencing cover (1), and a sealing boss (1.2) is arranged.
2. A sealing noise-deadening structure for a compressor according to claim 1, wherein: the protruding height (4) of the sealing boss (1.2) is 0.35-0.65 mm.
3. A sealing noise-deadening structure for a compressor according to claim 1, wherein: the minimum value of the radial width of the annular sealing surface of the sealing boss (1.2) contacted with the fastening screw (2) is 0.3 mm.
4. A sealing noise-deadening structure for a compressor according to claim 1, wherein: a bolt hole opening of the sealing boss (1.2) for installing the fastening bolt (2) is provided with a boss inner edge chamfer (1.3), and the chamfer is 0.1-0.2 mm; the outer edge of the sealing boss (1.2) is provided with a boss outer edge chamfer (1.1), the boss outer edge chamfer (1.1) is an arc chamfer R, and the minimum value of R is 0.1 mm.
5. A sealing noise-deadening structure for a compressor according to claim 1, wherein: the root of the screw rod of the fastening screw (2) is provided with a screw root chamfer (2.2), the screw root chamfer (2.2) is in arc transition, and the maximum radius of the arc is not more than 0.25 mm.
6. A compressor sealing silencing structure comprises a cylinder seat (3) and a silencing cover (1), wherein the silencing cover (1) is arranged on the cylinder seat (3) through a fastening screw (2); the method is characterized in that: the outer end of a through hole of the fastening screw (2) is arranged on the silencing cover (1), and a sealing boss (1.2) is arranged; and a high-temperature-resistant sealant coating (5) is arranged between the annular sealing surface of the sealing boss (1.2) and the screw pressing surface (2.3) of the fastening screw (2).
7. The utility model provides a compressor seals amortization structure, the compressor include cylinder block (3) and amortization lid (1), amortization lid (1) impress in the tang of cylinder block (3) to form tight fit, its characterized in that: and a coating layer of high-temperature-resistant sealant is arranged on the joint surface of the silencing cover (1) and the cylinder seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121387606.7U CN215486458U (en) | 2021-06-22 | 2021-06-22 | Sealing silencing structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121387606.7U CN215486458U (en) | 2021-06-22 | 2021-06-22 | Sealing silencing structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215486458U true CN215486458U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121387606.7U Active CN215486458U (en) | 2021-06-22 | 2021-06-22 | Sealing silencing structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215486458U (en) |
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2021
- 2021-06-22 CN CN202121387606.7U patent/CN215486458U/en active Active
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