Sealing structure and compressor

Abstract

The invention relates to the technical field of compressor equipment, in particular to a sealing structure and a compressor. The sealing structure is arranged in a contact area between a silencer and a connecting piece. The sealing structure comprises a sealing channel and a first sealing piece. The sealing channel comprises a first groove and a second groove which are oppositely arranged, and a plurality of groove joints are arranged in the second groove; the first sealing piece is contained in the sealing channel, when the silencer and the connecting piece are in a connected state, the first sealing piece is in a compressed state, the contact position of the first sealing piece and the interior of the second groove is extruded into the multiple groove sections to form a corrugated sealing section, and the area of the corrugated sealing section is larger than the contact area of the first sealing piece and the bottom of the first groove. The corrugated sealing section is formed in the sealing channel through the first sealing piece, the structure is simple, the sealing effect can be effectively improved, and therefore energy loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressor equipment, and in particular to a sealing structure and a compressor. Background Art

[0002] Compressors are widely used in air conditioners and other equipment, and are gradually developing towards high energy efficiency and low noise.

[0003] In air conditioning equipment, after the refrigerant gas passes through the compressor, it is discharged into the lower chamber of the motor in the air conditioner through the exhaust port. The high-pressure gas compressed by the compressor will generate strong exhaust noise when passing through the exhaust port. This part of the exhaust noise is also the main source of pneumatic noise. At this time, a muffler can be used to slow down the pulsation of high-pressure airflow and reduce exhaust noise.

[0004] The flanges and mufflers at the connection positions of existing compressors mostly use flat seals. Since the muffler is generally a stamped part, the flatness of the connection position between the muffler and the flange after demolding is poor. Therefore, the sealing performance at the connection position between the muffler and the flange is poor, which may cause exhaust leakage and energy loss. Summary of the invention

[0005] In view of this, the present invention provides a sealing structure and a compressor, which solves the problem of energy loss caused by poor sealing effect between the muffler and the flange in the existing compressor.

[0006] A first aspect of an embodiment of the present invention provides a sealing structure, which is arranged in a contact area between a muffler and a connecting piece, and the sealing structure comprises:

[0007] A sealing channel, the sealing channel comprising a first groove arranged on the connecting member and a second groove arranged on the muffler, the second groove being arranged opposite to the first groove and pointing along the inner side of the muffler toward the outer side of the muffler, and a plurality of groove sections arranged at intervals are arranged on the top of the second groove;

[0008] A first seal, wherein the first seal is accommodated in the sealing channel, and when the muffler and the connector are in a connected state, the first seal is in a compressed state, and the contact position between the first seal and the second groove is squeezed into a plurality of groove sections to form a corrugated sealing section, wherein the area of ​​the corrugated sealing section is greater than the contact area between the first seal and the bottom of the first groove.

[0009] In some embodiments, the number of the groove nodes is at least two, and the groove nodes are symmetrical structures.

[0010] In some embodiments, the number of the groove nodes is at least two;

[0011] Along the direction from the inside of the muffler to the outside of the muffler, the groove section includes a first section and a second section that are connected to each other, the first section is arranged in an oblique upward direction, and the second section is arranged in an oblique downward direction, wherein the inclination angle of the first section is smaller than the inclination angle of the second section.

[0012] In some embodiments, when the first seal is in a compressed state, the width of the first seal is defined as D; and the width of each groove node is defined as d;

[0013] Then there is the following relationship between the width D of the first sealing member and the width d of the groove node: (N×d)>0.6D, where N is the number of the groove nodes.

[0014] In some embodiments, the groove node includes a crest and a trough, and a first vertical distance between the crest and the trough is defined as h1; and a second vertical distance between the bottom of the first groove and the trough is defined as H1;

[0015] Then, the following relationship exists between the first vertical distance h1 and the second vertical distance H1: 0.1H1

[0016] In some embodiments, the first sealing member is an O-type high temperature resistant rubber ring;

[0017] The sealing channel is an annular groove.

[0018] A second aspect of an embodiment of the present invention provides a sealing structure, which is arranged in a contact area between a muffler and a connecting piece, and the sealing structure comprises:

[0019] A sealing groove, wherein the sealing groove is arranged on the muffler and / or the connecting member;

[0020] The second seal is arranged in the sealing groove, wherein, when the muffler and the connecting member are in a connected state, the contact area between the second seal and the muffler is smaller than or larger than the contact area between the second seal and the connecting member to form a chamfered sealing structure.

[0021] In some embodiments, a chamfer is provided on a side of the second seal facing the muffler, and the chamfer is provided on an upper end side or a lower end side of the second seal along a direction from the inside of the muffler to the outside of the muffler, and the chamfer is close to the outside of the muffler.

[0022] In some embodiments, the chamfer angle ranges from 25° to 85°.

[0023] ​In some embodiments, along the width direction from the inside of the muffler to the outside of the muffler, a first width of a contact position between the second seal and the muffler is defined as L1, and a second width of a contact position between the second seal and the connecting member is defined as L2;

[0024] Then the following relationship exists between the first width L1 and the second width L2: L1 ≥ 1 mm, and 0.4L2 ≤ L1 ≤ 0.8L2.

[0025] In some embodiments, along the height direction of the second sealing member, the height of the second sealing member is defined as h2, and the height of the sealing groove is defined as H2;

[0026] Then, there exists the following relationship between the height h2 of the second sealing member and the height H2 of the sealing groove: 1.15H2≤h2≤1.2H2.

[0027] In some embodiments, the material of the second sealing member includes one of metal, rubber, and plastic.

[0028] A third aspect of an embodiment of the present invention provides a compressor, comprising: a muffler and a connecting piece, wherein the muffler is adaptively connected to the connecting piece, wherein a contact area between the muffler and the connecting piece is sealed using the sealing structure described in the first aspect or the second aspect;

[0029] The connecting piece includes a connecting flange.

[0030] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0031] In the sealing structure and compressor of the present invention, the sealing structure is arranged in the contact area between the muffler and the connecting piece, wherein the connecting piece can be a connecting flange on the compressor. The sealing structure includes: a sealing channel and a first sealing piece; the sealing channel includes a first groove and a second groove that are arranged opposite to each other, and a plurality of groove sections are arranged in the second groove; the first sealing piece is accommodated in the sealing channel, and when the muffler and the connecting piece are in a connected state, the first sealing piece is in a compressed state, and the contact position of the first sealing piece with the second groove is squeezed into the plurality of groove sections to form a corrugated sealing section, and the area of ​​the corrugated sealing section is larger than the contact area between the first sealing piece and the bottom of the first groove. Based on this, by forming the corrugated sealing section and matching the size relationship of the contact area, the sealing effect between the muffler and the connecting piece can be effectively improved, thereby effectively reducing energy loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0034] Figure 1 is a structural schematic diagram of a compressor according to an embodiment of the present invention;

[0035] Figure 2 is a schematic diagram of the installation position structure of a first sealing member in a compressor according to an embodiment of the present invention;

[0036] Figure 3 is a structural schematic diagram of a sealing structure according to an embodiment of the present invention;

[0037] Figure 4 is a structural schematic diagram of a first sealing member in a compressed state in a sealing structure according to an embodiment of the present invention;

[0038] Figure 5 is a structural schematic diagram of a sealing channel in a sealing structure according to an embodiment of the present invention;

[0039] Figure 6 is another structural schematic diagram of a sealing channel in a sealing structure according to an embodiment of the present invention;

[0040] Figure 7 is a schematic diagram of the installation position structure of a second sealing member in a compressor according to an embodiment of the present invention;

[0041] Figure 8 is a structural schematic diagram of a second sealing member in a compressed state in a sealing structure according to an embodiment of the present invention;

[0042] Fig. 9 It is a schematic structural diagram of a second sealing member in a sealing structure according to an embodiment of the present invention.

[0043] Description of reference numerals:

[0044] 10. Compressor;

[0045] 100, sealing structure; 110, sealing channel; 111, first groove; 112, second groove; 112a, corrugated portion; 112b, groove section; 120, first sealing member; b1, first section; b2, second section;

[0046] 200. Muffler;

[0047] 300, connector;

[0048] 400, sealing groove;

[0049] 500, second sealing member; 510, chamfer;

[0050] d, groove section width, D, width of the first seal in compression state; h1, first vertical distance; H1, second vertical distance; A, value range of chamfer angle; L1, first width; L2, second width; h2, height of the second seal; H2, height of the sealing groove. DETAILED DESCRIPTION

[0051] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0052] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, but does not exclude the inclusion of at least one.

[0053] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0054] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such a product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0055] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0056] like Figure 1 , Figure 2 and Figure 7 As shown, an exemplary embodiment of the present invention provides a sealing structure 100, which is arranged in a contact area between a muffler 200 and a connecting member 300, wherein the contact area is as shown in FIG. Figure 1 The connecting member 300 may be a connecting flange of the compressor 10 .

[0057] like Figures 2 to 7 As shown, the sealing structure 100 includes a sealing channel 110 and a first sealing member 120. The sealing channel 110 includes a first groove 111 and a second groove 112, the first groove 111 and the second groove 112 are arranged opposite to each other, the first groove 111 is arranged on the connecting member 300, the second groove 112 is arranged on the muffler 200, and a corrugated portion 112a is arranged in the second groove 112.

[0058] The first groove 111 may be an annular groove, and the cross-sectional shape of the annular groove is a square or a rectangle.

[0059] Both side edges of the second groove 112 are vertical planes, and the corrugated portion 112a is disposed on the top surface of the second groove 112 . It should be noted that the top of the second groove 112 is located on the side opposite to the plane where the bottom of the first groove 111 is located.

[0060] The first sealing member 120 may be accommodated in the sealing channel 110 , that is, when the muffler 200 and the connecting member 300 are arranged opposite to each other and are in a connected state, the first sealing member 120 is placed in the sealing channel 110 to perform a sealing function.

[0061] When the muffler 200 and the connector 300 are in a connected state, the first seal 120 is in a compressed state, that is, the bottom of the first groove 111 and the top of the second groove 112 form a relative extrusion on the bottom and top surfaces of the first seal 120, so that the first seal 120 is relatively deformed, thereby forming a corrugated sealing section between the top surface of the first seal 120 and the corrugated portion 112a, wherein the area of ​​the corrugated sealing section is larger than the contact area between the first seal 120 and the bottom of the first groove 111.

[0062] Specifically, a plurality of groove sections 112 b arranged at intervals are arranged on the top of the second groove 112 in a direction from the inner side of the muffler 200 to the outer side of the muffler 200 .

[0063] When the muffler 200 and the connector 300 are in a connected state, the first seal 120 is compressed, and at this time, the position where the top of the first seal 120 contacts the corrugated portion 112a in the second groove 112 is squeezed into a plurality of groove sections 112b, thereby forming a corrugated sealing section.

[0064] The number of groove sections 112b can be any integer value between 2 and 8. It should be noted that when the number of groove sections 112b is one, the sealing effect of the formed corrugated sealing section is poor. When the number of groove sections 112b is more than 8, the manufacturing difficulty of the groove sections 112b will increase, and the width of the top of the second groove 112 will also be larger, thereby affecting the original structural strength of the connector 300 or the muffler 200. Therefore, the number of groove sections 112b is set to any value between two and eight, so as to ensure the original structural strength of the connector 300 and the muffler 200, while effectively improving the sealing effect between the two.

[0065] In this example, the muffler 200 is installed on a connecting piece 300, such as a connecting flange of a compressor. When the compressor is running, under the action of its internal exhaust pressure, the air pressure in the muffler 200 cavity is greater than the air pressure outside the cavity. At this time, the corrugated sealing section formed when the first seal 120 is compressed is utilized, and the structural design in which the area of ​​the corrugated sealing section is greater than the contact area between the first seal 120 and the bottom of the first groove 111 greatly improves the sealing effect between the muffler 200 and the connecting piece 300, preventing the compressor from exhausting air from between the muffler 200 and the connecting piece 300, thereby effectively reducing energy loss.

[0066] It should be noted that when the muffler 200 and the connecting piece 300 are in a connected state, along the direction from the inside of the muffler 200 to the outside of the muffler 200, the two side edges of the first sealing piece 120 in a compressed state may contact the two side edges of the sealing channel 110, or may not contact them.

[0067] The direction from the inner side of the muffler 200 to the outer side of the muffler 200 is parallel to the extension direction of the diameter of the connecting member 300 (ie, the connecting flange).

[0068] In one example, a first corrugated structure may also be provided at the bottom of the first groove 111. In this case, when the muffler 200 and the connector 300 are in a connected state, corrugated sealing sections are formed at the top and bottom of the sealing channel 110 to further improve the sealing performance between the muffler 200 and the connector 300. It should be noted that the length of the first corrugated structure in the first groove 111 is smaller than the length of the corrugated portion 112a in the second groove 112, so that the area of ​​the corrugated sealing section formed by the first corrugated structure is smaller than the area of ​​the corrugated sealing section formed by the corrugated portion 112a.

[0069] In another example, a second corrugated structure may be formed on the outside of the sealing channel 110, i.e., on the side wall close to the outside of the muffler 200, in a direction pointing from the inside of the muffler 200 to the outside of the muffler 200. That is, the second corrugated structure is arranged on the outer side walls of the first groove 111 and the second groove 112.

[0070] At this time, when the muffler 200 and the connector 300 are in a connected state, a corrugated sealing section will be formed on the top and outer side wall of the sealing channel 110 to ensure and improve the sealing performance between the muffler 200 and the connector 300, thereby reducing energy loss.

[0071] It should be noted that, in this example, when the first connecting member 120 is in a compressed state, the area of ​​the corrugated sealing section formed in the second groove 112 is larger than the contact area between the first sealing member 120 and the bottom of the first groove 111 .

[0072] In another example, a third corrugated structure may be formed on the outside of the sealing channel 110, i.e., on the side wall close to the outside of the muffler 200, and at the bottom of the first groove 111, along the direction from the inside of the muffler 200 to the outside of the muffler 200. When the muffler 200 and the connector 300 are in a connected state, a corrugated sealing section is formed on the top and the outer side wall of the sealing channel 110 to ensure and improve the sealing performance between the muffler 200 and the connector 300, thereby reducing energy loss.

[0073] It should be noted that in this example, when the first connecting member 120 is in a compressed state, the length of the third corrugated structure in the first groove 111 is smaller than the length of the corrugated portion 112a in the second groove 112, so that the area of ​​the corrugated sealing section formed by the third corrugated structure is smaller than the area of ​​the corrugated sealing section formed by the corrugated portion 112a.

[0074] like Figure 3As shown, in some embodiments, the cross-sectional shape of the sealing channel 110 is designed to be circular, square, and the shape of the first groove 111 and the second groove 112 as in the above example (groove channel). The cross-sectional areas of the channels in the three cases are designed to be the same through calculation and analysis, and the first sealing members 120 of the same size are installed respectively. Then, the leakage at the connection position of the muffler 200 and the connecting member 300 is compared under the same operating state of the compressor, and the leakage is tested in different types of compressors. The leakage of the three channels is shown in Table 1:

[0075]

[0076] As shown in Table 1 above, when the sealing channel 110 is designed as a groove-type channel, the leakage at the connection position of the muffler 200 and the connector 300 is the smallest, that is, the sealing performance is the best.

[0077] like Figures 3 to 6 As shown, in some embodiments, the number of groove segments 112b is at least two. When the number of groove segments 112b is less than two, such as one, the sealing effect of the formed corrugated sealing section is not ideal, so the number of groove segments 112b is set to two or more.

[0078] In a preferred example, the number of groove sections 112b is 3 to 5. This number of groove sections 112b is convenient for processing and manufacturing in the second groove 112, and can effectively ensure the original structural strength of the muffler 200 and the connecting member 300, thereby effectively improving the sealing effect of the contact area between the muffler 200 and the connecting member 300 and reducing energy loss.

[0079] The groove segment 112b is a symmetrical structure, which facilitates the processing and manufacturing of the groove segment 112b and reduces the difficulty of manufacturing the sealing channel 110. As shown in the following example, the groove segment 112b includes a crest and a trough, that is, the troughs on both sides of the crest are symmetrically arranged relative to the axis of the crest.

[0080] like Figure 6 As shown, in some embodiments, the number of groove segments 112b is at least two. When the number of groove segments 112b is less than two, such as one, the sealing effect of the formed corrugated sealing section is not ideal, so the number of groove segments 112b is set to two or more.

[0081] In a preferred example, the number of groove sections 112b is 4 to 6. This number of groove sections 112b is convenient for processing and manufacturing in the second groove 112, and can effectively ensure the original structural strength of the muffler 200 and the connecting member 300, thereby effectively improving the sealing effect of the contact area between the muffler 200 and the connecting member 300 and reducing energy loss.

[0082] Reference Figure 6 As shown, along the inner side of the muffler 200 or at least the outer side of the muffler 200, the groove section 112b includes a first section b1 and a second section b2 that are connected to each other. In each groove section 112b, the second section b2 is close to the outer side of the muffler 200. The first section b1 is arranged in an oblique upward direction, and the second section b2 is arranged in an oblique downward direction, and the inclination angle of the first section b1 is smaller than the inclination angle of the second section b2. That is, the groove section 112b in this example is an asymmetric structure.

[0083] In this example, when the muffler 200 and the connector 300 are in a connected state, the first seal 120 is squeezed into the groove section 112b. At this time, the second section b2 with a larger inclination angle cooperates with the first section b1 to form multiple corrugated sealing sections similar to a gentle upslope and a steep downslope. The sealing effect of the multiple corrugated sealing sections with a gentle upslope and a steep downslope in this example is slightly better than the sealing effect of the corrugated sealing sections with the above-mentioned symmetrical structure.

[0084] In one example, the acute angle of the inclination angle of the first segment b1 ranges from 20° to 45°, while the acute angle of the inclination angle of the second segment b2 ranges from 30° to 60°, wherein the inclination angle of the first segment b1 is smaller than the inclination angle of the second segment b2.

[0085] It should be noted that the acute angle of the inclination angle of the first segment b1 in this example is the acute angle formed by the intersection of the extension line of the first segment b1 with the horizontal plane, and the acute angle of the inclination angle of the second segment b2 is the acute angle formed by the intersection of the extension line of the second segment b2 with the horizontal plane.

[0086] like Figure 4 As shown, in some embodiments, after the muffler 200 is installed on the connector 300, the width of the first seal 120 when it is in a compressed state is defined as D, and the width of each groove section 112b is defined as d. It should be noted that the width d is applicable to the groove sections 112b of the above-mentioned symmetrical and asymmetrical structures.

[0087] Among them, in order to ensure that the first seal 120 is in a compressed state, based on the ultimate deformation capacity of the first seal 120, when the first seal 120 is squeezed into multiple groove sections 112b, the following relationship exists between the width D of the first seal 120 in the compressed state and the width d of the groove section 112b: (N×d)>0.6D, where N is the number of groove sections. It should be noted that based on the relationship between D and d, the sealing effect between the muffler 200 and the connector 300 can be effectively improved under the ultimate deformation capacity of the first seal 120, preventing the compressor from exhausting from between the muffler 200 and the connector 300, thereby effectively reducing energy loss.

[0088] like Figure 4 As shown, in some embodiments, the groove section 112b includes a crest and a trough, wherein a first vertical distance between the crest and the trough is defined as h1, and a second vertical distance between the bottom of the first groove 111 and the trough is defined as H1.

[0089] In order to better enable the deformation of the first sealing member 120 to adapt to the sealing channel 110 between the muffler 200 and the connecting member 300, the first vertical distance h1 and the second vertical distance H1 have the following relationship: 0.1H1

[0090] On the other hand, when the muffler 200 and the connecting piece 300 are in a connected state, the first seal 120 is in a compressed state. By limiting the ratio between the above distances, a corrugated sealing section with excellent sealing effect can be formed between the top of the first seal 120 and the second groove 112 to meet the sealing requirements between the muffler 200 and the connecting piece 300.

[0091] like Figure 2 and Figure 3 As shown, in some embodiments, the first sealing member 120 is an O-type high temperature resistant rubber ring, and the sealing channel 110 is an annular groove that is easy to process and manufacture.

[0092] In this example, the first sealing member 120 uses an O-type high temperature resistant rubber ring. The elasticity of the O-type ring made of high temperature resistant rubber can compensate for the manufacturing and fitting tolerances of the sealing channel 110, and the good elastic memory can achieve a good sealing effect. When the muffler 200 is installed on a connector 300 such as a connecting flange of a compressor, under the action of the internal exhaust pressure of the compressor when the compressor is running, the air pressure in the cavity of the muffler 200 is greater than the air pressure outside the cavity. At this time, the O-type high temperature resistant rubber ring forms a flow state similar to that of a fluid in the sealing channel 110, and forms a "zero gap" in the contact area between the muffler 200 and the connector 300, thereby achieving an excellent sealing effect, preventing the compressor from exhausting from between the muffler 200 and the connector 300, and effectively reducing energy loss.​

[0093] like Figures 7 to 9 As shown, an exemplary embodiment of the present invention provides a sealing structure 100 , which is disposed in a contact area between a muffler 200 and a connecting member 300 , and the connecting member 300 may be a connecting flange of a compressor 10 .

[0094] The sealing structure 100 includes a sealing groove 400 and a second sealing member 500. The sealing groove 400 may be an annular groove, and the cross-sectional shape of the annular groove may include but is not limited to a square. The sealing groove 400 is arranged on the muffler 200; or, the sealing groove 400 is arranged on the connecting member 300; or, the sealing groove 400 is arranged on the muffler 200 and the connecting member 300, that is, the sealing groove 400 can be divided into two relatively arranged parts, one of which is arranged on the muffler 200, and the other is arranged on the connecting member 300.

[0095] The second sealing member 500 is disposed in the sealing groove 400 , wherein when the muffler 200 and the connecting member 300 are in a connected state, the second sealing member 500 is in a compressed state to perform a sealing function.

[0096] Among them, when the second seal 500 is in a compressed state, the contact area between the second seal 500 and the muffler 200 is smaller than or larger than the contact area between the second seal 500 and the connecting piece 300, thereby increasing the elastic deformation degree of the second seal 500 to increase its elasticity. The second seal 500 after elastic deformation is more likely to fit with the contact surface of the muffler 200 or the connecting piece 300, and form a chamfered sealing structure set in a forward direction, or, form a chamfered sealing structure set in a reverse direction.

[0097] In this example, the muffler 200 is installed on a connecting piece 300, such as a connecting flange of a compressor. When the compressor is running, under the action of the internal exhaust pressure, the air pressure in the muffler 200 cavity is greater than the air pressure outside the cavity. The second seal 500 is located between the muffler 200 and the connecting piece 300 and is in a compressed state. At this time, the second seal 500 will form a chamfered sealing structure in the sealing groove 400. Due to the periodic rotation of the crankshaft in the compressor 10 and the vibration during the operation of the compressor 10, the second seal 500 of the chamfered sealing structure has a better effect on vibration pressure treatment than traditional flat gaskets and other structures. Therefore, it can effectively ensure the sealing effect between the muffler 200 and the connecting piece 300 during the use of the compressor 10.

[0098] Among them, when the contact area between the second seal 500 and the muffler 200 is greater than the contact area between the second seal 500 and the connecting piece 300, a reversely set chamfered sealing structure is formed, and at this time, the extrusion pressure borne by the bottom surface of the second seal 500 (that is, the side where the second seal 500 contacts the connecting piece 300) is greater than the extrusion pressure borne by its top surface (that is, the side where the second seal 500 contacts the muffler 200), so that the second seal 500 is more easily stimulated to elastically deform when subjected to pressure, thereby effectively ensuring the sealing effect between the muffler 200 and the connecting piece 300, preventing the compressor from exhausting from between the muffler 200 and the connecting piece 300, and effectively reducing energy loss.

[0099] When the contact area between the second seal 500 and the muffler 200 is smaller than the contact area between the second seal 500 and the connecting piece 300, a positively arranged chamfered sealing structure is formed, and at this time, the extrusion pressure borne by the bottom surface of the second seal 500 (i.e., the side where the second seal 500 contacts the connecting piece 300) is smaller than the extrusion pressure borne by the top surface (i.e., the side where the second seal 500 contacts the muffler 200), so that the second seal 500 is more easily stimulated to elastically deform when subjected to pressure, thereby effectively ensuring the sealing effect between the muffler 200 and the connecting piece 300, preventing the compressor from exhausting air from between the muffler 200 and the connecting piece 300, and effectively reducing energy loss.

[0100] like Figure 8 and Fig. 9 As shown, in some embodiments, the second seal 500 is provided with a chamfer 510 on one side facing the muffler 200. In the direction from the inside of the muffler 200 to the outside of the muffler 200, the chamfer 510 is provided on the upper end side or the lower end side of the second seal 500, and the chamfer is close to the outside of the muffler 200.

[0101] That is, when the chamfer 510 is disposed on the upper end side of the outer side of the second seal 500, the chamfer sealing structure of the positive setting in the above example is formed. And when the chamfer 510 is disposed on the lower end side of the outer side of the second seal 500, the chamfer sealing structure of the reverse setting in the above example is formed.

[0102] In one example, the angle A of the chamfer 510 ranges from 25° to 85°. Preferably, the angle A of the chamfer 510 ranges from 30° to 80°. In a specific example, the angle A of the chamfer 510 is 45° or 60°.

[0103] In this example, the angle of the chamfer 510 is limited accordingly to avoid the compression area of ​​the top or bottom surface of the second seal 500 being too small when the second seal 500 is in a compressed state, thereby reducing the sealing effect of the second seal 500.

[0104] like Figure 8 and Fig. 9 As shown, in some embodiments, along the width direction from the inside to the outside of the muffler 200, the first width of the contact position between the second seal 500 and the muffler 200 is defined as L1, and the second width of the contact position between the second seal 500 and the connecting member 300 is defined as L2. Then, there is the following relationship between the first width L1 and the second width: L1 ≥ 1 mm, and 0.4L2 ≤ L1 ≤ 0.8L2, so as to ensure that the second seal 500 is more likely to be elastically deformed when squeezed, so as to increase its elasticity, and the elastically deformed second seal 500 is more likely to fit with the contact surface of the muffler 200, thereby forming an effective seal.

[0105] On the other hand, if the dimension of L1 is less than 0.4L2, in the squeezed state, although the second sealing member 500 is more likely to be elastically deformed, the width dimension of L1 is relatively small, so the dimension of L1 is prone to be misaligned or cracked, resulting in sealing failure. Therefore, under the limitation of the above width dimension, the sealing effect formed by the top surface or bottom surface of the second sealing member 500 is better.

[0106] It should be noted that the present example describes the case of a chamfered sealing structure that is set in the forward direction. Similarly, when the chamfered sealing structure is set in the reverse direction, the first width of the contact position between the second seal 500 and the muffler 200 is defined as L1 along the width direction from the inside to the outside of the muffler 200, and the second width of the contact position between the second seal 500 and the connector 300 is defined as L2. Then, the following relationship exists between the first width L1 and the second width: L2 ≥ 1 mm, and 0.4L1 ≤ L2 ≤ 0.8L1. Similarly, the beneficial effects of the reversely set chamfered sealing structure of this example are the same as those of the above-mentioned forwardly set chamfered sealing structure, which will not be repeated here.

[0107] like Figure 8 and Fig. 9 As shown, in some embodiments, along the height direction of the second sealing member 500, the height of the second sealing member 500 is defined as h2, and the height of the sealing groove 400 is defined as H2. There is the following relationship between the height h2 of the second sealing member 500 and the height H2 of the sealing groove 400: 1.15H2≤h2≤1.2H2.

[0108] The material of the second sealing member 500 may include but is not limited to metal, rubber, plastic, etc.

[0109] That is to say, according to the different materials of the second sealing member 500, the height ratio of the second sealing member 500 to the sealing groove 400 is also different. For example, when the second sealing member 500 is made of metal, the height h2 of the second sealing member 500 can be 1.15 times the height H2 of the sealing groove 400; for another example, when the second sealing member 500 is made of plastic, the height h2 of the second sealing member 500 can be 1.18 times the height H2 of the sealing groove 400. For another example, when the second sealing member 500 is made of rubber, the height h2 of the second sealing member 500 can be 1.2 times the height H2 of the sealing groove 400.

[0110] like Figure 1 As shown, an exemplary embodiment of the present invention provides a compressor 10, which includes a muffler 200 and a connector 300. The connector 300 may be a connecting flange of the compressor 10.

[0111] The muffler 200 and the connecting member 300 are connected in an adaptive manner, for example, they are connected by bolts or other structures, etc. The contact area between the muffler 200 and the connecting member 300 adopts the sealing structure 100 of any of the above embodiments.

[0112] In this example, one solution is: install the muffler 200 on a connecting piece 300, such as a connecting flange of a compressor. When the compressor is running, under the action of its internal exhaust pressure, the air pressure in the muffler 200 cavity is greater than the air pressure outside the cavity. At this time, the corrugated sealing section formed when the first seal 120 is compressed is utilized, and the structural design in which the area of ​​the corrugated sealing section is greater than the contact area between the first seal 120 and the bottom of the first groove 111 greatly improves the sealing effect between the muffler 200 and the connecting piece 300, prevents the compressor from exhausting air from between the muffler 200 and the connecting piece 300, and thus effectively reduces energy loss.

[0113] Another solution is to install the muffler 200 on a connecting piece 300, such as a connecting flange of a compressor. When the compressor is running, under the action of its internal exhaust pressure, the air pressure inside the muffler 200 cavity is greater than the air pressure outside the cavity. At this time, the chamfered sealing structure formed when the second sealing piece 500 is compressed greatly improves the sealing effect between the muffler 200 and the connecting piece 300, preventing the compressor from exhausting air from between the muffler 200 and the connecting piece 300, thereby effectively reducing energy loss.

[0114] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0115] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A sealing structure, arranged in the contact area between a muffler and a connecting piece, characterized in that: The sealing structure comprises: A sealing channel, the sealing channel comprising a first groove arranged on the connecting member and a second groove arranged on the muffler, the second groove being arranged opposite to the first groove and pointing along the inner side of the muffler toward the outer side of the muffler, and a plurality of groove sections arranged at intervals are arranged on the top of the second groove; A first seal, wherein the first seal is accommodated in the sealing channel, and when the muffler and the connector are in a connected state, the first seal is in a compressed state, and the contact position between the first seal and the second groove is squeezed into a plurality of groove sections to form a corrugated sealing section, wherein the area of ​​the corrugated sealing section is greater than the contact area between the first seal and the bottom of the first groove.

2. The sealing structure according to claim 1, characterized in that: The number of the groove sections is at least two, and the groove sections are symmetrical structures.

3. The sealing structure according to claim 1, characterized in that: The number of the groove nodes is at least two; Along the direction from the inside of the muffler to the outside of the muffler, the groove section includes a first section and a second section that are connected to each other, the first section is arranged in an oblique upward direction, and the second section is arranged in an oblique downward direction, wherein the inclination angle of the first section is smaller than the inclination angle of the second section.

4. The sealing structure according to claim 1, characterized in that: When the first seal is in a compressed state, the width of the first seal is defined as D; and the width of each groove node is defined as d; Then there is the following relationship between the width D of the first sealing member and the width d of the groove node: (N×d)>0.6D, where N is the number of the groove nodes.

5. The sealing structure according to claim 1, characterized in that: The groove node includes a crest and a trough, and a first vertical distance between the crest and the trough is defined as h1; and a second vertical distance between the bottom of the first groove and the trough is defined as H1; Then, the following relationship exists between the first vertical distance h1 and the second vertical distance H1: 0.1H1<h1<0.55H1.

6. The sealing structure according to any one of claims 1 to 5, characterized in that: The first sealing member is an O-type high temperature resistant rubber ring; The sealing channel is an annular groove.

7. A sealing structure, arranged in the contact area between the muffler and the connecting piece, characterized in that: The sealing structure comprises: A sealing groove, wherein the sealing groove is arranged on the muffler and / or the connecting member; The second seal is arranged in the sealing groove, wherein, when the muffler and the connecting member are in a connected state, the contact area between the second seal and the muffler is smaller than or larger than the contact area between the second seal and the connecting member to form a chamfered sealing structure.

8. The sealing structure according to claim 7, characterized in that: The second seal is provided with a chamfer on one side facing the muffler, and the chamfer is provided on the upper end side or the lower end side of the second seal along the direction from the inside of the muffler to the outside of the muffler, and the chamfer is close to the outside of the muffler.

9. The sealing structure according to claim 8, characterized in that: The chamfer angle ranges from 25° to 85°.

10. The sealing structure according to claim 7, characterized in that: Along the width direction from the inside of the muffler to the outside of the muffler, a first width of a contact position between the second sealing member and the muffler is defined as L1, and a second width of a contact position between the second sealing member and the connecting member is defined as L2; Then the following relationship exists between the first width L1 and the second width L2: L1 ≥ 1 mm, and 0.4L2 ≤ L1 ≤ 0.8L2.

11. The sealing structure according to claim 7, characterized in that: Along the height direction of the second sealing member, the height of the second sealing member is defined as h2, and the height of the sealing groove is defined as H2; Then, there exists the following relationship between the height h2 of the second sealing member and the height H2 of the sealing groove: 1.15H2≤h2≤1.2H2.

12. The sealing structure according to any one of claims 7 to 11, characterized in that: The material of the second sealing member includes one of metal, rubber and plastic.

13. A compressor, characterized in that: include: A muffler and a connecting piece, wherein the muffler is adaptively connected to the connecting piece, wherein a contact area between the muffler and the connecting piece is sealed by using a sealing structure according to any one of claims 1 to 12; The connecting piece includes a connecting flange.

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