A sealing structure and a compressor

Abstract

The application 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 muffler and a connecting piece, and comprises a sealing channel and a first sealing piece. The sealing channel comprises oppositely arranged first and second grooves, 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, a contact position of the first sealing piece in the second groove is extruded 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 of the first sealing piece and the bottom of the first groove. In the application, the corrugated sealing section is formed in the sealing channel by the first sealing piece, the structure is simple, the sealing effect can be effectively improved, and thus the energy loss is reduced.

Description

Technical Field

[0001] This invention relates to the field of compressor equipment technology, and in particular to a sealing structure and a compressor. Background Technology

[0002] Compressors are widely used in equipment such as air conditioners, and they are gradually developing towards higher energy efficiency and lower noise.

[0003] In air conditioning equipment, after the refrigerant gas passes through the compressor, it is discharged into the lower chamber of the motor through the exhaust port. The high-pressure gas compressed by the compressor generates significant exhaust noise as it passes through the exhaust port, making this part of the exhaust noise a major source of aerodynamic noise. At this point, a muffler can be used to slow down the high-pressure airflow pulsation and reduce exhaust noise.

[0004] Most existing compressors use flat seals for their flanges and mufflers at the connection points. Since mufflers are generally stamped parts, the flatness at the connection point between the muffler and the flange is poor after demolding. Therefore, the sealing performance at the connection point between the muffler and the flange is poor, which may lead to exhaust leakage and energy loss. Summary of the Invention

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

[0006] A first aspect of the present invention provides a sealing structure disposed in the contact area between a muffler and a connector, the sealing structure comprising:

[0007] A sealing channel, the sealing channel including a first groove provided on the connector and a second groove provided on the muffler, the second groove being disposed opposite to the first groove and pointing in the direction from the inside of the muffler to the outside of the muffler, and the top of the second groove being provided with a plurality of spaced groove sections;

[0008] A first seal is housed within the sealing channel. When the muffler and the connector are in a connected state, the first seal is in a compressed state. 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 larger than the contact area between the first seal and the bottom of the first groove.

[0009] In some embodiments, the number of grooved sections is at least two, and the grooved sections have a symmetrical structure.

[0010] In some embodiments, the number of grooved sections 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 upward oblique direction, and the second section is arranged in a downward oblique direction. The inclination angle of the first section is smaller than that of the second section.

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

[0013] The following relationship exists between the width D of the first seal and the width d of the groove section: (N×d)>0.6D, where N is the number of groove sections.

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

[0015] The first vertical distance h1 and the second vertical distance H1 have the following relationship: 0.1H1 < h1 < 0.55H1.

[0016] In some embodiments, the first seal is a high-temperature resistant O-ring;

[0017] The sealing channel is an annular groove.

[0018] A second aspect of the present invention provides a sealing structure disposed in the contact area between a muffler and a connector, the sealing structure comprising:

[0019] A sealing groove is provided on the muffler and / or the connector;

[0020] The second sealing element is disposed in the sealing groove, wherein when the muffler and the connecting member are in the connected state, the contact area between the second sealing element and the muffler is less than or greater than the contact area between the second sealing element and the connecting member, so as to form a chamfered sealing structure.

[0021] In some embodiments, the second seal has a chamfer on the side facing the muffler, and the chamfer is located on the upper or lower side of the second seal along the direction from the inner side of the muffler to the outer side of the muffler, and the chamfer is close to the outer side of the muffler.

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

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

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

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

[0026] The height h2 of the second seal and the height H2 of the sealing groove are related as follows: 1.15H2≤h2≤1.2H2.

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

[0028] A third aspect of the present invention provides a compressor comprising: a muffler and a connector, wherein the muffler is adapted to be connected to the connector, and the contact area between the muffler and the connector is sealed by a sealing structure as described in the first or second aspect.

[0029] The connector includes a connecting flange.

[0030] Compared with the prior art, the main advantages of the present invention are:

[0031] In the sealing structure and compressor of the present invention, the sealing structure is disposed in the contact area between the muffler and the connector, wherein the connector may be a connecting flange on the compressor. The sealing structure includes a sealing channel and a first sealing element; the sealing channel includes a first groove and a second groove disposed opposite to each other, and the second groove has multiple groove sections; the first sealing element is housed within the sealing channel, and when the muffler and the connector are in a connected state, the first sealing element is in a compressed state, and the contact position between the first sealing element and the second groove is squeezed into the multiple groove sections to form a corrugated sealing section, the area of ​​which is larger than the contact area between the first sealing element and the bottom of the first groove. Based on this, by forming a corrugated sealing section and coordinating the size relationship of the contact area, the sealing effect between the muffler and the connector can be effectively improved, thereby effectively reducing energy loss. Attached Figure Description

[0032] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0033] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

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

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

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

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

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

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

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

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

[0042] Figure 9 This is a schematic diagram of the structure of the second sealing element in a sealing structure according to an embodiment of the present invention.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10. Compressor;

[0045] 100. Sealing structure; 110. Sealing channel; 111. First groove; 112. Second groove; 112a. Corrugated section; 112b. Groove section; 120. First seal; b1. First section; b2. Second section;

[0046] 200. Muffler;

[0047] 300. Connectors;

[0048] 400, sealing groove;

[0049] 500. Second seal; 510. Chamfer;

[0050] d, groove width; D, width of the first seal in the compressed state; h1, first vertical distance; H1, second vertical distance; A, range of chamfer angle; L1, first width; L2, second width; h2, height of the second seal; H2, height of the sealing groove. Detailed Implementation

[0051] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” used in the embodiments of this invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. “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 merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0054] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0055] The 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 intended 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 disposed in the contact area between the muffler 200 and the connector 300, wherein the contact area is as follows: Figure 1 As shown in the X position. Connector 300 can be the connecting flange of compressor 10.

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

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

[0059] The two sides of the second groove 112 are vertical surfaces, and the corrugated part 112a is provided 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 element 120 can be accommodated in the sealing channel 110. That is, when the muffler 200 and the connector 300 are arranged opposite each other and are in a connected state, the first sealing element 120 is placed in the sealing channel 110 to perform the sealing function.

[0061] When the muffler 200 and the connector 300 are in the 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 compression on the bottom and top surfaces of the first seal 120, causing the first seal 120 to deform relative to each other, 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, along the direction from the inside of the muffler 200 to the outside of the muffler 200, a plurality of spaced groove sections 112b are provided at the top of the second groove 112.

[0063] When the muffler 200 and the connector 300 are in the connected state, the first seal 120 is compressed. 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 the multiple groove sections 112b, thereby forming a corrugated sealing section.

[0064] The number of grooved sections 112b can be any integer value from 2 to 8. It should be noted that when there is only one grooved section 112b, the sealing effect of the resulting corrugated sealing section is poor. When there are eight or more grooved sections 112b, the manufacturing difficulty of the grooved sections 112b increases, and the top width of the second groove 112 becomes larger, thus affecting the original structural strength of the connector 300 or the muffler 200. Therefore, setting the number of grooved sections 112b to any value between two and eight ensures the original structural strength of the connector 300 and the muffler 200 while effectively improving the sealing effect between them.

[0065] In this example, the muffler 200 is installed on the connecting flange of the compressor, such as the connecting member 300. When the compressor is running, the air pressure inside the muffler 200 is greater than the air pressure outside the cavity due to the internal exhaust pressure. At this time, the corrugated sealing section formed when the first sealing member 120 is compressed, combined with the structural design that the area of ​​the corrugated sealing section is larger than the contact area between the first sealing member 120 and the bottom of the first groove 111, greatly improves the sealing effect between the muffler 200 and the connecting member 300, preventing the compressor from exhausting between the muffler 200 and the connecting member 300, thereby effectively reducing energy loss.

[0066] It should be noted that when the muffler 200 and the connector 300 are in the connected state, the two sides of the first seal 120 in the compressed state along the direction from the inside of the muffler 200 to the outside of the muffler 200 can contact the two sides of the sealing channel 110, or they can not contact each other.

[0067] The direction from the inside of the muffler 200 to the outside of the muffler 200 is parallel to the direction of the diameter extension of the connector 300 (i.e., the connecting flange).

[0068] In one example, a first corrugated structure can also be provided at the bottom of the first groove 111. In this case, when the muffler 200 and the connector 300 are in the connected state, corrugated sealing sections will be formed at both 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 less 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 can also be formed on the outer side of the sealing channel 110, that is, on the side wall near the outer side of the muffler 200, in the direction from the inner side of the muffler 200 to the outer side of the muffler 200. In other words, the second corrugated structure is provided on the outer side wall of the first groove 111 and the second groove 112.

[0070] At this time, when the muffler 200 and the connector 300 are in the connected state, corrugated sealing sections 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 connector 120 is in a compressed state, the area of ​​the corrugated sealing section formed in the second groove 112 is greater than the contact area between the first seal 120 and the bottom of the first groove 111.

[0072] In another example, a third corrugated structure can be formed along the direction from the inside of the muffler 200 to the outside of the sealing channel 110, that is, on the side wall near the outside of the muffler 200, and at the bottom of the first groove 111. When the muffler 200 and the connector 300 are connected, corrugated sealing sections are 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.

[0073] It should be noted that, in this example, when the first connector 120 is in a compressed state, the length of the third corrugated structure in the first groove 111 is less 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 less 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 as circular, square, and as in the examples above (groove channel) with the first groove 111 and the second groove 112. Through calculation and analysis, the cross-sectional area of ​​the channel in the three cases is designed to be the same, and the same size first seal 120 is installed in each case. Then, the leakage at the connection point of the muffler 200 and the connector 300 is compared under the same compressor operating conditions, and leakage tests are conducted in different types of compressors. The leakage amounts of the three channels are 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 point between the muffler 200 and the connector 300 is minimal, which means the sealing performance is the best.

[0077] like Figures 3 to 6 As shown, in some embodiments, the number of grooved sections 112b is at least two. When the number of grooved sections 112b is less than two, such as one, the sealing effect of the formed corrugated sealing section is not ideal. Therefore, the number of grooved sections 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 facilitates the processing and manufacturing within the second groove 112, while also effectively ensuring the original structural strength of the muffler 200 and the connector 300, thereby effectively improving the sealing effect of the contact area between the muffler 200 and the connector 300 and reducing energy loss.

[0079] The groove section 112b has a symmetrical structure to facilitate its processing and reduce the manufacturing difficulty of the sealing channel 110. As shown in the example below, the groove section 112b includes crests and troughs, that is, the troughs located on both sides of the crests are symmetrically arranged with respect to the axis of the crests.

[0080] like Figure 6 As shown, in some embodiments, the number of grooved sections 112b is at least two. When the number of grooved sections 112b is less than two, such as one, the sealing effect of the formed corrugated sealing section is not ideal. Therefore, the number of grooved sections 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 facilitates the processing and fabrication within the second groove 112, while also effectively ensuring the original structural strength of the muffler 200 and the connector 300, thereby effectively improving the sealing effect of the contact area between the muffler 200 and the connector 300 and reducing energy loss.

[0082] Reference Figure 6 As shown, along the direction from the inside of the muffler 200 to at least the outside of the muffler 200, the groove section 112b includes a first segment b1 and a second segment b2 that are interconnected. In each groove section 112b, the second segment b2 is closer to the outside of the muffler 200. The first segment b1 is arranged obliquely upwards, and the second segment b2 is arranged obliquely downwards, and the inclination angle of the first segment b1 is smaller than the inclination angle of the second segment b2. That is, the groove section 112b in this example has an asymmetrical structure.

[0083] In this example, when the muffler 200 and the connector 300 are in the 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 works with the first section b1 to form multiple corrugated sealing sections similar to a gentle uphill slope and a steep downhill slope. The sealing effect of the multiple corrugated sealing sections with a gentle uphill slope and a steep downhill slope 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 tilt angle of the first segment b1 ranges from 20° to 45°, while the acute angle of the tilt angle of the second segment b2 ranges from 30° to 60°. The tilt angle of the first segment b1 is smaller than that of the second segment b2.

[0085] It should be noted that, in this example, the acute angle of the tilt angle of the first segment b1 is the acute angle formed when the extension line of the first segment b1 intersects the horizontal plane, and the acute angle of the tilt angle of the second segment b2 is the acute angle formed when the extension line of the second segment b2 intersects 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 is defined as D when the first seal 120 is in a compressed state, 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] To ensure the first seal 120 is in a compressed state, based on its ultimate deformation capacity, when the first seal 120 is compressed into multiple groove sections 112b, the width D of the first seal 120 and the width d of the groove section 112b in the compressed state have the following relationship: (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 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 crests and troughs. A first vertical distance between the crests and troughs 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 accommodate the deformation of the first seal 120 to fit the sealing channel 110 between the muffler 200 and the connector 300, the first vertical distance h1 and the second vertical distance H1 have the following relationship: 0.1H1 < h1 < 0.55H1.

[0090] On the other hand, when the muffler 200 and the connector 300 are in a connected state, the first seal 120 is in a compressed state. By limiting the ratio between the above-mentioned 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 connector 300.

[0091] like Figure 2 and Figure 3 As shown, in some embodiments, the first seal 120 is an O-ring 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 seal 120 uses a high-temperature resistant O-ring. The elasticity of the high-temperature resistant rubber O-ring can compensate for the manufacturing and fitting tolerances of the sealing channel 110, and its good elastic memory can achieve a good sealing effect. When the muffler 200 is installed on the connector 300, such as the connecting flange of the compressor, under the action of the internal exhaust pressure of the compressor during operation, the air pressure inside the muffler 200 cavity is greater than the air pressure outside the cavity. At this time, the high-temperature resistant O-ring forms a fluid-like flow state in the sealing channel 110, forming 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 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 disposed in the contact area between a muffler 200 and a connector 300, wherein the connector 300 may be a connecting flange of a compressor 10.

[0094] The sealing structure 100 includes a sealing groove 400 and a second sealing element 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 may be disposed on the muffler 200; or, the sealing groove 400 may be disposed on the connector 300; or, the sealing groove 400 may be disposed on both the muffler 200 and the connector 300. That is, the sealing groove 400 may be divided into two opposing parts, one part of which is disposed on the muffler 200 and the other part of which is disposed on the connector 300.

[0095] The second sealing element 500 is arranged in the sealing groove 400. When the muffler 200 and the connector 300 are in the connected state, the second sealing element 500 is in a compressed state to perform the sealing function.

[0096] When the second seal 500 is in a compressed state, the contact area between the second seal 500 and the muffler 200 is smaller or larger than the contact area between the second seal 500 and the connector 300, thereby increasing the elastic deformation degree of the second seal 500 to increase its elasticity. After elastic deformation, the second seal 500 is more likely to fit with the contact surface of the muffler 200 or the connector 300, forming a positively positioned chamfered sealing structure, or forming a reversely positioned chamfered sealing structure.

[0097] In this example, the muffler 200 is installed on the connecting flange of the compressor, such as the connecting part 300. When the compressor is running, under the action of its internal exhaust pressure, the air pressure inside the muffler 200 is greater than the air pressure outside the cavity. The second seal 500 is located between the muffler 200 and the connecting part 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 with 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 part 300 during the use of the compressor 10.

[0098] Specifically, 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 connector 300, a chamfered sealing structure with reverse orientation is formed. At this time, the compressive force borne by the bottom surface of the second seal 500 (i.e., the side surface of the second seal 500 in contact with the connector 300) is greater than the compressive force borne by its top surface (i.e., the side surface of the second seal 500 in contact with the muffler 200). This makes it easier for the second seal 500 to undergo elastic deformation under pressure, thereby effectively ensuring the sealing effect between the muffler 200 and the connector 300, preventing the compressor from exhausting between the muffler 200 and the connector 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 connector 300, a positively oriented chamfered sealing structure is formed. At this time, the compressive force borne by the bottom surface of the second seal 500 (i.e., the side surface of the second seal 500 in contact with the connector 300) is less than the compressive force borne by its top surface (i.e., the side surface of the second seal 500 in contact with the muffler 200). This makes it easier for the second seal 500 to undergo elastic deformation under pressure, thereby effectively ensuring the sealing effect between the muffler 200 and the connector 300, preventing the compressor from exhausting between the muffler 200 and the connector 300, and effectively reducing energy loss.

[0100] like Figure 8 and Figure 9 As shown, in some embodiments, the second seal 500 has a chamfer 510 on the side facing the muffler 200. Specifically, the chamfer 510 is provided on the upper or lower end side of the second seal 500 along the direction from the inner side to the outer side of the muffler 200, and the chamfer is close to the outer side of the muffler 200.

[0101] In other words, when the chamfer 510 is provided on the upper end side of the outer side of the second seal 500, a positively positioned chamfer sealing structure as described above is formed. And when the chamfer 510 is provided on the lower end side of the outer side of the second seal 500, a negatively positioned chamfer sealing structure as described above is formed.

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

[0103] In this example, by limiting the value of the chamfer angle 510, the compression area of ​​the top or bottom surface of the second seal 500 is not 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 Figure 9 As shown, in some embodiments, along the width direction from the inner side to the outer side 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 connector 300 is defined as L2. Then, the following relationship exists between the first width L1 and the second width: L1 ≥ 1 mm, and 0.4L2 ≤ L1 ≤ 0.8L2, to ensure that the second seal 500 is more likely to undergo elastic deformation when compressed, thereby increasing its elasticity. After elastic deformation, the second seal 500 is more likely to fit against the contact surface of the muffler 200, thus forming an effective seal.

[0105] On the other hand, if the size of L1 is less than 0.4L2, although the second seal 500 is more prone to elastic deformation under compression, the relatively small width of L1 makes it susceptible to misalignment or cracking, leading to seal failure. Therefore, under the aforementioned width limitation, the sealing effect formed by the top or bottom surface of the second seal 500 is better.

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

[0107] like Figure 8 and Figure 9 As shown, in some embodiments, the height of the second seal 500 is defined as h2 along the height direction of the second seal 500, and the height of the sealing groove 400 is defined as H2. The height h2 of the second seal 500 and the height H2 of the sealing groove 400 are related as follows: 1.15H2≤h2≤1.2H2.

[0108] The material of the second seal 500 may include, but is not limited to, one of the following: metal, rubber, plastic, etc.

[0109] In other words, the height ratio of the second seal 500 to the sealing groove 400 varies depending on the material of the second seal 500. For example, when the second seal 500 is made of metal, its height h2 can be 1.15 times the height H2 of the sealing groove 400; when the second seal 500 is made of plastic, its height h2 can be 1.18 times the height H2 of the sealing groove 400; and when the second seal 500 is made of rubber, its height h2 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 is adapted to be connected to the connector 300, for example, by bolts or other structural means. The contact area between the muffler 200 and the connector 300 utilizes the sealing structure 100 of any of the above embodiments.

[0112] In this example, one solution is to install the muffler 200 on the connecting flange of the compressor, such as the connecting member 300. When the compressor is running, the internal exhaust pressure causes the air pressure inside the muffler 200 to be greater than the air pressure outside the cavity. At this time, the corrugated sealing section formed when the first sealing member 120 is compressed, combined with the structural design that the area of ​​the corrugated sealing section is larger than the contact area between the first sealing member 120 and the bottom of the first groove 111, greatly improves the sealing effect between the muffler 200 and the connecting member 300, preventing the compressor from exhausting between the muffler 200 and the connecting member 300, thereby effectively reducing energy loss.

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

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

[0115] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A sealing structure disposed in the contact area between a muffler and a connector, characterized in that, The sealing structure includes: A sealing channel, the sealing channel including a first groove provided on the connector and a second groove provided on the muffler, the second groove being disposed opposite to the first groove and pointing in the direction from the inside of the muffler to the outside of the muffler, and the bottom of the second groove being provided with a plurality of spaced groove sections; The number of groove sections 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 upward oblique direction, and the second section is arranged in a downward oblique direction. The inclination angle of the first section is smaller than that of the second section, and the second section of each groove section is close to the outside of the muffler. A first sealing element is housed within the sealing channel. When the muffler and the connector are in a connected state, the first sealing element is in a compressed state. The contact position between the first sealing element and the second groove is squeezed into a plurality of groove sections to form a corrugated sealing section. The area of ​​the corrugated sealing section is larger than the contact area between the first sealing element and the bottom of the first groove. 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 section is defined as d; then the following relationship exists between the width D of the first seal and the width d of the groove section: (N×d)>0.6D, where N is the number of groove sections; The groove section includes crests and troughs, and a first vertical distance between the crests and the troughs is defined as h1; and a second vertical distance between the bottom of the first groove and the troughs is defined as H1; then the first vertical distance h1 and the second vertical distance H1 have the following relationship: 0.1H1 < h1 < 0.55H1.

2. The sealing structure according to claim 1, characterized in that, The first sealing element is a high-temperature resistant O-ring; The sealing channel is an annular groove.

3. A compressor, characterized in that, include: A muffler and a connector, wherein the muffler is adapted to be connected to the connector, and the contact area between the muffler and the connector is sealed by a sealing structure as described in claim 1 or 2; The connector includes a connecting flange.

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