Cover plate assembly, muffler, compressor, refrigeration device and vehicle

Abstract

This application provides a cover plate assembly, a muffler, a compressor, a refrigeration device, and a vehicle. The cover plate assembly, used in a muffler, includes: a cover plate; an exhaust pipe disposed on a first side of the cover plate, the inner surface of the exhaust pipe enclosing a channel, the exhaust pipe extending first in a direction away from the cover plate, and then extending towards a plane containing a second side of the cover plate, the first side and the second side of the cover plate being adjacent sides of the cover plate; and a heat insulation structure disposed on the portion of the exhaust pipe extending towards the second side of the cover plate, the heat insulation structure including at least one of a first heat insulation portion, a second heat insulation portion, and a heat insulation recess; the first heat insulation portion is located between the outer surface and the inner surface of the exhaust pipe; the second heat insulation portion is connected to the outer surface of the exhaust pipe; and the portion of the exhaust pipe located around the channel is recessed towards the channel to form the heat insulation recess. This application can reduce heat transfer effects, thereby improving intake efficiency, avoiding intake overheating, and improving compressor efficiency.

Description

Technical Field

[0001] This application relates to the field of compressor technology, and more specifically, to a cover assembly, a muffler, a compressor, refrigeration equipment, and a vehicle. Background Technology

[0002] During compressor operation, the muffler, besides serving as an important component for sound insulation and noise reduction, also plays a crucial role in the overall cooling capacity and energy efficiency. The compressor draws low-temperature, low-pressure refrigerant into the cylinder through the muffler and compresses it into high-temperature, high-pressure refrigerant before discharging it. Therefore, during compressor operation, components such as the valve plate and cylinder head can be considered high-temperature heat sources compared to the refrigerant drawn into the muffler. When the compressor draws in refrigerant, the low-temperature refrigerant exits through the muffler's outlet pipe. During this process, the cylinder head transfers heat to the refrigerant at the outlet pipe, leading to overheating of the intake gas and reducing compressor efficiency. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this application proposes a cover plate assembly.

[0005] The second aspect of this application proposes a silencer.

[0006] The third aspect of this application proposes a compressor.

[0007] The fourth aspect of this application proposes a refrigeration device.

[0008] The fifth aspect of this application proposes a vehicle.

[0009] In view of the above, the first aspect of this application provides a cover plate assembly for a muffler, comprising: a cover plate; an exhaust pipe disposed on a first side of the cover plate, the inner surface of the exhaust pipe enclosing a channel, the exhaust pipe extending first in a direction away from the cover plate, and then extending toward a plane containing a second side of the cover plate, the first side and the second side of the cover plate being adjacent sides of the cover plate; a heat insulation structure disposed on the portion of the exhaust pipe extending toward the plane containing the second side of the cover plate, the heat insulation structure comprising at least one of a first heat insulation portion, a second heat insulation portion, and a heat insulation recess; the first heat insulation portion being located between the outer surface and the inner surface of the exhaust pipe; the second heat insulation portion being connected to the outer surface of the exhaust pipe; and the portion of the exhaust pipe located around the channel being recessed toward the channel to form a heat insulation recess.

[0010] The cover plate assembly provided in this application includes a cover plate, an air outlet pipe, and a heat insulation structure.

[0011] The vent pipe is located on one side of the cover plate, which serves as the mounting carrier for the vent pipe and has the function of installing and fixing the vent pipe.

[0012] The inner surface of the outlet pipe encloses a channel through which the refrigerant flows out of the cover plate assembly.

[0013] The cover assembly includes a heat insulation structure, which serves a heat insulation function. During compressor operation, the heat insulation structure reduces the amount of heat transferred from high-temperature heat sources such as the valve plate and cylinder head to the passage, thereby minimizing heat transfer between these heat sources and the refrigerant flowing through the outlet pipe. This reduces the heat transfer effect, protecting the low-temperature refrigerant in the passage from overheating, or allowing it to be slightly heated to stabilize the temperature of the refrigerant flowing through the outlet pipe. This improves suction efficiency, prevents overheating during suction, and ultimately enhances compressor efficiency.

[0014] The extension direction of the exhaust pipe is defined. Specifically, the exhaust pipe is located on the first side of the cover plate. The exhaust pipe first extends away from the cover plate, and then extends towards the plane containing the second side of the cover plate. The first and second sides of the cover plate are adjacent to each other. The side of the exhaust pipe away from the cover plate is positioned opposite the valve plate. The heat insulation structure is located on the portion of the exhaust pipe extending towards the second side of the cover plate, thus defining the location of the heat insulation structure. It is understood that the portion of the exhaust pipe extending towards the second side of the cover plate is closer to high-temperature heat sources such as the valve plate and cylinder head. Therefore, the heat transfer effect of high-temperature heat sources is stronger in this portion. Placing the heat insulation structure here ensures heat insulation while reducing the number of locations requiring it, which helps reduce material input for the heat insulation structure and lowers the modification cost of the cover plate assembly.

[0015] The heat insulation structure includes at least one of a first heat insulation portion, a second heat insulation portion, and a heat insulation recess. That is, the heat insulation structure includes a first heat insulation portion, or the heat insulation structure includes a second heat insulation portion, or the heat insulation structure includes a heat insulation recess, or the heat insulation structure includes a first heat insulation portion and a second heat insulation portion, or the heat insulation structure includes a first heat insulation portion and a heat insulation recess, or the heat insulation structure includes a second heat insulation portion and a heat insulation recess, or the heat insulation structure includes a first heat insulation portion, a second heat insulation portion, and a heat insulation recess.

[0016] When the insulation structure includes a first insulation part, the first insulation part is located between the outer surface and the inner surface of the outlet pipe. This arrangement makes reasonable use of the location of the first insulation part, which can reduce the distance between the first insulation part and the channel, so as to form the shortest thermal resistance barrier between the channel and the high-temperature heat source located outside the outlet pipe. The wall thickness of the outlet pipe at the first insulation part is reduced, and the heat transfer path at the high-temperature heat source outside the outlet pipe is weakened. In this way, the heat conduction efficiency can be significantly reduced, thereby significantly reducing the heat transfer effect, ensuring the temperature of the refrigerant flowing through the outlet pipe, and stabilizing the temperature of the refrigerant flowing through the outlet pipe.

[0017] When the heat insulation structure includes a second heat insulation section, the second heat insulation section is connected to the outer surface of the outlet pipe. After the muffler and cylinder head are assembled, the second heat insulation section abuts against the wall of the mounting groove in the cylinder head. This arrangement creates a gap between the outer surface of the outlet pipe and the wall of the mounting groove. Therefore, this configuration increases the distance between the outlet pipe and the wall of the mounting groove and reduces the contact area between the cover plate assembly and the cylinder head. This reduces heat transfer between the high-temperature heat source and the refrigerant in the passage, further reducing the heat transfer effect and ensuring a stable temperature of the refrigerant flowing through the outlet pipe, thereby improving intake efficiency.

[0018] When the insulation structure includes an insulation recess, the portion of the outlet pipe located on the periphery of the channel is recessed towards the channel to form the insulation recess. After the muffler and cylinder head are assembled together, this arrangement can reduce the contact area between the cover plate assembly and the cylinder head. This reduces the heat transfer between the high-temperature heat source and the refrigerant in the channel, further reducing the heat transfer effect and ensuring the temperature of the refrigerant flowing through the outlet pipe. It can stabilize the temperature of the refrigerant flowing through the outlet pipe, thereby improving the intake efficiency.

[0019] In some technical solutions, the insulation structure may optionally surround the channel; or the insulation structure may be an arc-shaped structure extending circumferentially along the channel; or there may be multiple insulation structures, which are arranged at intervals along the circumferential direction of the channel.

[0020] In this technical solution, the arrangement of the thermal insulation structure is further defined.

[0021] For example, the heat insulation structure is arranged around the channel, that is, the heat insulation structure is arranged around the periphery of the channel. This arrangement can block the heat transfer of the high temperature heat source outside the gas pipe from all directions and angles, and block the heat diffusion and transfer to the refrigerant in the channel, resulting in good heat insulation effect.

[0022] For example, the heat insulation structure is an arc-shaped structure extending circumferentially along the channel. This arrangement helps to increase the mating area and mating angle between the heat insulation structure and the channel, which helps to reduce the heat transfer between the high-temperature heat source and the refrigerant flowing through the outlet pipe, and helps to improve the suction efficiency.

[0023] For example, there are multiple insulation structures, which are arranged at intervals along the circumference of the channel. This arrangement allows heat transfer from high-temperature heat sources outside the exhaust pipe to be blocked from multiple directions and angles, preventing heat diffusion and transfer to the refrigerant inside the channel, thus ensuring the insulation effect.

[0024] In some technical solutions, the first heat insulation part may optionally include at least one of a heat insulation groove, a heat insulation cavity, and a heat insulation hole.

[0025] In this technical solution, the structure of the first heat insulation part is further defined such that the first heat insulation part includes at least one of a heat insulation groove, a heat insulation cavity, and a heat insulation hole. That is, the first heat insulation part includes a heat insulation groove, or the first heat insulation part includes a heat insulation cavity, or the first heat insulation part includes a heat insulation hole, or the first heat insulation part includes a heat insulation groove and a heat insulation cavity, or the first heat insulation part includes a heat insulation cavity and a heat insulation hole, or the first heat insulation part includes a heat insulation groove and a heat insulation hole, or the first heat insulation part includes a heat insulation groove, a heat insulation cavity, and a heat insulation hole.

[0026] When the first insulation section includes an insulation groove, the insulation groove can reduce the amount of heat transferred from the high-temperature heat source to the refrigerant in the channel, thereby effectively reducing the heat transfer effect. Furthermore, the structure of the insulation groove reduces the refrigerant flow velocity after it enters the groove. The slow-flowing refrigerant in the insulation groove further reduces the heat transfer effect, thus maximizing the protection of the refrigerant in the channel from heating, which helps improve suction efficiency. Simultaneously, the gas in the insulation groove has a low thermal conductivity; therefore, the structure of the insulation groove can further enhance the insulation effect by changing the thermal conductivity.

[0027] When the first insulation section includes an insulation cavity, the insulation cavity has excellent insulation performance, which can reduce convective and radiative heat transfer, and reduce the heat transferred from the high-temperature heat source to the refrigerant in the channel, thereby effectively reducing the heat transfer effect. In addition, the gas in the insulation cavity has a low thermal conductivity; therefore, the structural design of the insulation cavity can further enhance the insulation effect by changing the thermal conductivity.

[0028] When the first heat insulation section includes heat insulation holes, the heat insulation holes can reduce the amount of heat transferred from the high-temperature heat source to the refrigerant in the channel, thereby effectively reducing the heat transfer effect. Furthermore, the structural design of the heat insulation holes reduces the flow velocity of the refrigerant after it flows into the holes. The slow-flowing refrigerant within the holes further reduces the heat transfer effect, thus maximizing the protection of the refrigerant in the channel from heating, which is beneficial for improving suction efficiency. Simultaneously, the gas within the heat insulation holes has a low thermal conductivity; therefore, the structural design of the heat insulation holes can further enhance the heat insulation effect by varying the thermal conductivity.

[0029] In some technical solutions, optionally, when the first heat insulation part includes a heat insulation groove, the heat insulation groove is divided into at least a first heat insulation section and a second heat insulation section along the circumferential direction of the channel, and the first heat insulation section and the second heat insulation section have different sizes; along the direction from the air outlet pipe to the cover plate, the first heat insulation section is located above the second heat insulation section.

[0030] In this technical solution, the structure of the heat insulation groove is further defined.

[0031] When the first heat insulation part includes a heat insulation groove, the structure of the heat insulation groove is divided such that, along the circumferential direction of the channel, the heat insulation groove is divided into at least a first heat insulation section and a second heat insulation section. Specifically, along the direction from the vent pipe to the cover plate, the first heat insulation section is located above the second heat insulation section.

[0032] The first and second insulation sections have different dimensions. While ensuring the insulation effect, the existing structure of the vent pipe can be used reasonably, reducing the material input for the modification of the cover plate assembly and reducing the modification cost of the cover plate assembly. This setting can also ensure the wall thickness of the vent pipe, thereby ensuring the structural strength of the vent pipe, so as to ensure the overall structural strength of the cover plate assembly and provide structural support for ensuring the reliability of the silencer.

[0033] In some technical solutions, optionally, along the direction from the outer surface of the vent pipe to the inner surface of the vent pipe, the width of the first heat insulation section is L1, and the width of the second heat insulation section is L2, where L1 is greater than or equal to L2.

[0034] In this technical solution, the cooperative structure of the first heat insulation section and the second heat insulation section is further defined.

[0035] Along the direction from the outer surface of the vent pipe to the inner surface of the vent pipe, the width of the first insulation section is L1, and the width of the second insulation section is L2, where L1 is greater than or equal to L2.

[0036] In other words, the width of the first insulation section from the outer surface of the vent pipe to the inner surface of the vent pipe is greater than or equal to the width of the second insulation section from the outer surface of the vent pipe to the inner surface of the vent pipe.

[0037] After the muffler is assembled with the compressor cylinder head, the first heat insulation section is closer to the cylinder head than the second heat insulation section; that is, the first heat insulation section is closer to the high-temperature heat source than the second heat insulation section. By making the width L1 of the first heat insulation section greater than or equal to the width L2 of the second heat insulation section, the stability and reliability of the heat insulation effect of the heat insulation structure are ensured.

[0038] When L1 is greater than L2, it not only increases the distance between the channel and the cylinder head to enhance the heat insulation effect of the heat insulation structure, but also makes reasonable use of the existing structure of the exhaust pipe to ensure the wall thickness of the exhaust pipe at the second heat insulation section, so as to ensure the structural strength of the exhaust pipe and provide structural support for the effective and stable assembly of the exhaust pipe and the valve plate of the compressor.

[0039] When L1 equals L2, while ensuring the thermal insulation effect of the thermal insulation structure, it also has the advantages of being easy to process, having low processing difficulty, and low processing cost.

[0040] In some technical solutions, L1 and L2 can optionally satisfy: 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm.

[0041] In this technical solution, the range of values ​​for L1 and L2 is limited.

[0042] Among them, 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm. This is to balance the heat insulation effect of the heat insulation structure and the structural strength of the cover plate assembly.

[0043] When at least one of L1 and L2 is less than 0.5mm, the width of the heat insulation groove in the direction from the outer surface of the air outlet pipe to the inner surface of the air outlet pipe is too small, the distance from the channel to the high-temperature heat source is too short, the heat insulation effect of the heat insulation structure is poor, and the air intake overheating will occur.

[0044] If at least one of L1 and L2 is greater than 1.5mm, the width of the heat insulation groove from the outer surface of the outlet pipe to the inner surface of the outlet pipe is too large, resulting in a thinner wall thickness of the outlet pipe at the heat insulation groove, which leads to lower structural strength of the outlet pipe and affects the reliability and stability of the silencer.

[0045] In some technical solutions, optionally, along the direction from the opening of the insulation groove to the bottom of the insulation groove, the depth of the first insulation section is H1, and the depth of the second insulation section is H2, where H1 is greater than or equal to H2.

[0046] In this technical solution, the cooperative structure of the first heat insulation section and the second heat insulation section is further defined.

[0047] Along the direction from the opening of the insulation groove to the bottom of the insulation groove, the depth of the first insulation section is H1, and the depth of the second insulation section is H2, where H1 is greater than or equal to H2.

[0048] In other words, the depth of the first insulation section from the opening to the bottom of the insulation groove is greater than or equal to the depth of the second insulation section from the opening to the bottom of the insulation groove.

[0049] After the muffler is assembled with the compressor cylinder head, the first heat insulation section is closer to the cylinder head than the second heat insulation section; that is, the first heat insulation section is closer to the high-temperature heat source than the second heat insulation section. By making the depth H1 of the first heat insulation section greater than or equal to the depth H2 of the second heat insulation section, the stability and reliability of the heat insulation effect of the heat insulation structure are ensured.

[0050] If H2 is greater than H1, then in order to ensure the structural strength of the vent pipe, the thickness of the vent pipe at the second insulation section needs to be increased. This requires increasing the material input of the vent pipe, which will increase the production cost of the cover plate assembly.

[0051] In some technical solutions, optionally, H1 and H2 satisfy: H1≥1mm, H2≤1mm.

[0052] In this technical solution, the range of values ​​for H1 and H2 is limited.

[0053] Where H1≥1mm, H2≤1mm. This setting ensures the thermal insulation effect of the insulation structure while guaranteeing the structural strength of the cover assembly, reducing the deformation of the cover assembly during compressor operation, and providing structural support for ensuring the service life of the cover assembly.

[0054] If H1 is less than 1mm, then the depth of the first insulation section in the direction from the opening of the insulation groove to the bottom of the insulation groove is too small, the distance from the channel to the high-temperature heat source is too short, the insulation effect of the insulation structure is poor, and the situation of air intake overheating will occur.

[0055] If H2 is greater than 1mm, then in order to ensure the structural strength of the vent pipe, the thickness of the vent pipe at the second heat insulation section needs to be increased. This requires increasing the material input of the vent pipe, which will increase the production cost of the cover plate assembly.

[0056] In some technical solutions, optionally, the outer surface of the portion of the vent pipe located outside the second insulation section is the mounting surface, and the outer surface of the portion of the vent pipe located between the channel and the second insulation section is the mating surface; the mating surface is closer to the bottom of the insulation groove than the mounting surface.

[0057] In this technical solution, the structure of the cover plate assembly is further defined.

[0058] The vent pipe has a mounting surface and a mating surface. The outer surface of the portion of the vent pipe located outside the second insulation section is the mounting surface, and the outer surface of the portion of the vent pipe located between the channel and the second insulation section is the mating surface. The mounting surface abuts against the gasket located between the valve plate and the vent pipe.

[0059] The mating surface is closer to the bottom wall of the insulation groove than the mounting surface. That is, the distance from the mating surface to the bottom of the insulation groove is less than the distance from the mounting surface to the bottom of the insulation groove.

[0060] In other words, after the muffler is assembled with the valve plate and gasket, the gasket connects between the outlet pipe and the valve plate, with the mating surfaces and the gasket spaced apart; that is, there is a gap between the mating surfaces and the gasket. This arrangement increases the distance between the outlet pipe and the high-temperature heat source (e.g., the valve plate and gasket), and reduces the contact area between the cover assembly and the high-temperature heat source, thereby reducing heat transfer between the high-temperature heat source and the refrigerant in the channel and enhancing the insulation effect. At the same time, the thermal conductivity of air is lower than that of the sheet metal. The gap between the outlet pipe and the gasket has a lower thermal conductivity than the contact area between the outlet pipe and the gasket, further enhancing the insulation effect through this change in thermal conductivity.

[0061] In some technical solutions, optionally, the height difference between the mounting surface and the mating surface along the direction from the opening of the heat insulation groove to the bottom of the heat insulation groove is greater than or equal to 0.2mm.

[0062] In this technical solution, the mating structure of the mounting surface and the mating surface is further defined.

[0063] Specifically, the height difference between the mounting surface and the mating surface along the direction from the opening of the insulation groove to the bottom of the insulation groove is greater than or equal to 0.2mm, so as to ensure the insulation effect of the insulation structure.

[0064] If the height difference between the mounting surface and the mating surface is less than 0.2mm, the distance from the mating surface to the gasket is relatively short, and the refrigerant is more affected by the high-temperature heat source, which is not conducive to improving the suction efficiency and may lead to suction overheating. The effect on improving the efficiency of the compressor is not obvious.

[0065] In some technical solutions, optionally, when the first heat insulation part includes a heat insulation cavity, the heat insulation cavity is a vacuum cavity; or heat insulation material is arranged inside the heat insulation cavity; or the thermal conductivity of the portion of the vent pipe located between the heat insulation cavity and the channel is less than the thermal conductivity of the portion of the vent pipe located between the outer surfaces of the heat insulation cavity and the vent pipe.

[0066] In this technical solution, the structure of the cover plate assembly is further defined.

[0067] When the first heat insulation part includes a heat insulation cavity, the heat insulation cavity is a vacuum cavity. The vacuum cavity has good heat insulation performance, which can reduce heat transfer, reduce convective heat transfer and radiative heat transfer, and reduce the heat transferred from the high-temperature heat source to the refrigerant in the channel, so as to effectively reduce the heat transfer effect.

[0068] When the first heat insulation part includes a heat insulation cavity, heat insulation material is arranged inside the heat insulation cavity. That is, by filling the heat insulation cavity with a material that can block the heat flow, the heat transferred from the high-temperature heat source to the refrigerant in the channel is reduced, thereby effectively reducing the heat transfer effect.

[0069] When the first insulation section includes an insulation cavity, the thermal conductivity of the portion of the vent pipe located between the insulation cavity and the channel is less than the thermal conductivity of the portion of the vent pipe located between the outer surfaces of the insulation cavity and the vent pipe. In other words, the thermal conductivity of the outer wall of the insulation cavity is less than the thermal conductivity of the inner wall of the insulation cavity. By limiting the variation in thermal conductivity at different locations of the vent pipe, a dual insulation effect of the insulation cavity and the thermally conductive material is achieved, which helps to enhance the insulation effect of the insulation structure and thus reduce heat transfer.

[0070] In some technical solutions, the second heat insulation part optionally includes at least one heat insulation protrusion that protrudes out of the outer surface of the air pipe; when there are multiple heat insulation protrusions, the multiple heat insulation protrusions are arranged at intervals along the circumference of the channel.

[0071] In this technical solution, the specific structure of the thermal insulation structure is further defined.

[0072] The second heat insulation section includes at least one heat insulation protrusion. When the muffler and cylinder head are assembled together, the heat insulation protrusion abuts against the groove wall of the cylinder head mounting slot to meet the usage requirements of the outer surface of the exhaust pipe being spaced apart from the groove wall of the mounting slot.

[0073] The number of thermal insulation structures is at least one.

[0074] When there are multiple heat insulation protrusions, the multiple heat insulation protrusions are arranged at intervals along the circumference of the channel. This arrangement can support the vent pipe from multiple directions and angles, so that different positions on the outer surface of the vent pipe can be separated from the groove wall of the mounting groove, thereby meeting the usage requirements of the spaced arrangement between the outer surface of the vent pipe and the groove wall of the mounting groove and ensuring the heat insulation effect.

[0075] The heat insulation protrusion extends out of the outer surface of the vent pipe. In other words, the heat insulation protrusion allows different positions on the outer surface of the vent pipe to be separated from the groove wall of the mounting groove, so as to meet the usage requirements of the vent pipe's outer surface and the groove wall of the mounting groove being spaced apart, and to ensure the heat insulation effect.

[0076] For example, the heat-insulating protrusion extends from the outer surface of the vent pipe in a direction away from the channel.

[0077] In some technical solutions, optionally, the inner surface of the vent pipe and the outer surface of the vent pipe are both recessed in the direction of the channel at the heat insulation recess; or the outer surface of the vent pipe is recessed in the direction of the channel at the heat insulation recess.

[0078] In this technical solution, the shape of the heat insulation recess is further defined.

[0079] Both the inner and outer surfaces of the exhaust pipe are recessed towards the channel at the heat insulation recess. This design further reduces the contact area between the cover assembly and the cylinder head, thereby further reducing heat transfer between the high-temperature heat source and the refrigerant in the channel, further reducing the heat transfer effect, ensuring the temperature of the refrigerant flowing through the exhaust pipe, stabilizing the temperature of the refrigerant flowing through the exhaust pipe, and thus improving intake efficiency.

[0080] The outer surface of the exhaust pipe is recessed towards the channel at the heat insulation recess. This design not only meets the requirement of reducing the contact area between the cover assembly and the cylinder head, but also has the advantages of convenient processing and low processing difficulty, which helps to reduce the processing cost of the product.

[0081] In some technical solutions, the cover plate assembly may optionally include: at least one first limiting rib; at least one second limiting rib, with the vent pipe connected between the first limiting rib and the second limiting rib; both the first limiting rib and the second limiting rib are used for the installation and fixation of the vent pipe.

[0082] In this technical solution, the structure of the cover plate assembly is further defined, such that the cover plate assembly includes a first limiting rib and a second limiting rib. The vent pipe is connected between the first limiting rib and the second limiting rib.

[0083] After the muffler and cylinder head are assembled, the first limiting rib is engaged in the first recessed structure of the cylinder head, and the second limiting rib is engaged in the second recessed structure of the cylinder head.

[0084] The first limiting rib and the first recessed structure cooperate, and the second limiting rib and the second recessed structure cooperate to limit the assembly dimensions of the muffler and the cylinder head from multiple directions and angles, limit the displacement of the muffler relative to the cylinder head, and provide structural support to ensure the flow path of the refrigerant.

[0085] The number of first limiting ribs is at least one, and / or the number of second limiting ribs is at least one. When the number of at least one of the first limiting ribs and the second limiting ribs is multiple, the limiting area of ​​the muffler and cylinder head can be increased, which is beneficial to improving the stability and reliability of the muffler and cylinder head assembly.

[0086] It is understandable that the number of first limiting ribs and first recessed structures is the same, and each first limiting rib is matched with a first recessed structure for limiting.

[0087] It is understandable that the number of second limiting ribs and second recessed structures is the same, and each second limiting rib is matched with a second recessed structure for limiting.

[0088] In some technical solutions, the cover plate assembly may optionally include: at least one third limiting rib, the third limiting rib being disposed on one side of the air outlet pipe, the third limiting rib being used for the installation and fixing of the air outlet pipe.

[0089] In this technical solution, the structure of the cover plate assembly is further defined such that the cover plate assembly includes a third limiting rib, which is located on one side of the air outlet pipe.

[0090] After the muffler and valve plate are assembled, the third limiting rib is engaged in the groove of the valve plate.

[0091] The third limiting rib and the slot work together to limit the assembly dimensions of the muffler and the valve plate, limit the displacement of the muffler relative to the valve plate, and provide structural support to ensure the flow path of the refrigerant.

[0092] There is at least one third limiting rib. When there are multiple third limiting ribs, the limiting area of ​​the muffler and valve plate can be increased, which is beneficial to improving the stability and reliability of the muffler and valve plate assembly.

[0093] The second aspect of this application provides a muffler comprising: a cover assembly as described in the first aspect.

[0094] The muffler provided in this application includes the cover assembly as described in the first aspect, and therefore has all the beneficial effects of the aforementioned cover assembly, which will not be described in detail here.

[0095] A third aspect of this application discloses a compressor comprising: a cylinder head having a mounting groove, a portion of the groove wall being recessed to form a first recessed structure and a second recessed structure; a valve plate having a retaining groove; and a muffler as in the second aspect, a portion of the outlet pipe being located within the mounting groove, a first limiting rib of a cover plate assembly being engaged in the first recessed structure, a second limiting rib of the cover plate assembly being engaged in the second recessed structure, and a third limiting rib of the cover plate assembly being engaged in the retaining groove; wherein, when the heat insulation structure includes a second heat insulation portion, the second heat insulation portion abuts against the groove wall of the mounting groove.

[0096] The compressor provided in this application includes a muffler as described in the second aspect, and therefore has all the beneficial effects of the aforementioned muffler, which will not be described in detail here.

[0097] After the muffler and cylinder head are assembled, the first limiting rib is engaged in the first recessed structure of the cylinder head, and the second limiting rib is engaged in the second recessed structure of the cylinder head.

[0098] The first limiting rib and the first recessed structure cooperate, and the second limiting rib and the second recessed structure cooperate to limit the assembly dimensions of the muffler and the cylinder head from multiple directions and angles, limit the displacement of the muffler relative to the cylinder head, and provide structural support to ensure the flow path of the refrigerant.

[0099] The third limiting rib and the slot work together to limit the assembly dimensions of the muffler and the valve plate, limit the displacement of the muffler relative to the valve plate, and provide structural support to ensure the flow path of the refrigerant.

[0100] When the insulation structure includes a second insulation section, the second insulation section abuts against the wall of the mounting groove. This arrangement creates a gap between the outer surface of the outlet pipe and the wall of the mounting groove. Therefore, this configuration increases the distance between the outlet pipe and the wall of the mounting groove, and reduces the contact area between the cover plate assembly and the cylinder head. This reduces heat transfer between the high-temperature heat source and the refrigerant in the channel, further reducing the heat transfer effect and ensuring a stable temperature of the refrigerant flowing through the outlet pipe, thereby improving suction efficiency.

[0101] The fourth aspect of this application proposes a refrigeration device, comprising: the compressor described in the third aspect.

[0102] The refrigeration equipment provided in this application includes a compressor as described in the third aspect, and therefore has all the beneficial effects of the aforementioned compressor, which will not be described in detail here.

[0103] The fifth aspect of this application proposes a vehicle comprising: a compressor as described in the third aspect.

[0104] The vehicle provided in this application has all the beneficial effects of the compressor described above, as it includes the compressor described in the third aspect, which will not be described in detail here.

[0105] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0106] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0107] Figure 1 A schematic diagram of the cover plate assembly according to the first embodiment of this application is shown;

[0108] Figure 2 A partial structural schematic diagram of the cover plate assembly according to a second embodiment of this application is shown;

[0109] Figure 3 A partial structural schematic diagram of the cover plate assembly according to the third embodiment of this application is shown;

[0110] Figure 4 A partial structural schematic diagram of the cover plate assembly according to the fourth embodiment of this application is shown;

[0111] Figure 5 A schematic diagram of the first part of a compressor according to an embodiment of this application is shown;

[0112] Figure 6 A schematic diagram of the second part of the compressor according to an embodiment of this application is shown;

[0113] Figure 7 A simulation diagram of the refrigerant flow rate inside the muffler during the suction phase of the compressor of this application is shown.

[0114] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0115] 10 Cover plate assembly, 100 Cover plate, 110 First side of cover plate, 120 Second side of cover plate, 200 Air outlet pipe, 210 Channel, 220 Mounting surface, 230 Mating surface, 300 Thermal insulation structure, 300a Thermal insulation groove, 300b Thermal insulation cavity, 300c Thermal insulation protrusion, 300d Thermal insulation recess, 300e First thermal insulation part, 300f Second thermal insulation part, 310 First thermal insulation section, 320 Second thermal insulation section, 330 Groove opening of thermal insulation groove, 340 Groove bottom of thermal insulation groove, 400 First limiting rib, 500 Second limiting rib, 600 Third limiting rib, 70 Compressor, 700 Cylinder head, 710 First recessed structure, 720 Second recessed structure, 730 Mounting groove, 800 Valve plate, 810 Slot, 900 Pad. Detailed Implementation

[0116] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0117] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0118] The following reference Figures 1 to 7 This application describes some embodiments of a cover assembly 10, a muffler, a compressor 70, a refrigeration device, and a vehicle.

[0119] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a cover plate assembly 10 according to some embodiments of this application is used for a muffler. The cover plate assembly 10 includes a cover plate 100, an exhaust pipe 200, and a heat insulation structure 300.

[0120] The vent pipe 200 is located on the first side 110 of the cover plate.

[0121] The inner surface of the vent pipe 200 encloses the channel 210.

[0122] The vent pipe 200 first extends away from the cover plate 100, and then extends towards the plane where the second side 120 of the cover plate is located.

[0123] The first side 110 and the second side 120 of the cover plate are adjacent sides of the cover plate 100.

[0124] The heat insulation structure 300 is provided on the portion of the air outlet pipe 200 extending toward the second side 120 of the cover plate.

[0125] like Figure 1 and Figure 2 As shown, the heat insulation structure 300 includes at least one of a first heat insulation portion 300e, a second heat insulation portion 300f, and a heat insulation recess 300d.

[0126] The first heat insulation part 300e is located between the outer surface of the vent pipe 200 and the inner surface of the vent pipe 200.

[0127] The second heat insulation part 300f is connected to the outer surface of the air outlet pipe 200.

[0128] The portion of the vent pipe 200 located on the periphery of the channel 210 is recessed toward the channel 210 to form an insulating recess 300d.

[0129] The cover plate assembly 10 provided in this application includes a cover plate 100, an air outlet pipe 200, and a heat insulation structure 300.

[0130] The vent pipe 200 is located on one side of the cover plate 100. The cover plate 100 serves as the mounting carrier for the vent pipe 200 and has the function of installing and fixing the vent pipe 200.

[0131] The inner surface of the outlet pipe 200 encloses a channel 210, through which the refrigerant flows out of the cover plate assembly 10.

[0132] The cover plate assembly 10 includes a heat insulation structure 300, which has a heat insulation function. When the compressor 70 is working, under the action of the heat insulation structure 300, the amount of heat transferred from high-temperature heat sources such as the valve plate 800 and cylinder head 700 to the channel 210 is relatively small. This reduces the heat transfer between the high-temperature heat sources and the refrigerant flowing through the outlet pipe 200 in the channel 210, thereby reducing the heat transfer effect. This protects the low-temperature refrigerant in the channel 210 from being heated, or allows the low-temperature refrigerant in the channel 210 to be heated slightly, stabilizing the temperature of the refrigerant flowing through the outlet pipe 200. This helps to improve the suction efficiency, avoids suction overheating, and improves the efficiency of the compressor 70.

[0133] The extension direction of the vent pipe 200 is defined. Specifically, the vent pipe 200 is located on the first side 110 of the cover plate. The vent pipe 200 first extends away from the cover plate 100, and then extends towards the plane containing the second side 120 of the cover plate. The first side 110 and the second side 120 of the cover plate are adjacent to each other on the cover plate 100. The side of the vent pipe 200 away from the cover plate 100 is positioned opposite to the valve plate 800. The heat insulation structure 300 is located on the portion of the vent pipe 200 extending towards the plane containing the second side 120 of the cover plate, thus defining the position of the heat insulation structure 300. It is understandable that the portion of the exhaust pipe 200 extending toward the plane of the second side 120 of the cover plate is closer to high-temperature heat sources such as the valve plate 800 and the cylinder head 700. In other words, the heat transfer effect of the high-temperature heat source is stronger in the portion of the exhaust pipe 200 extending toward the plane of the second side 120 of the cover plate. Therefore, placing the heat insulation structure 300 at this location can reduce the number of locations of the heat insulation structure 300 while ensuring the heat insulation effect. This is beneficial to reducing the material input of the heat insulation structure 300 and reducing the modification cost of the cover plate assembly 10.

[0134] The heat insulation structure 300 includes at least one of a first heat insulation portion 300e, a second heat insulation portion 300f, and a heat insulation recess 300d. That is, the heat insulation structure 300 includes the first heat insulation portion 300e, or the heat insulation structure 300 includes the second heat insulation portion 300f, or the heat insulation structure 300 includes the heat insulation recess 300d, or the heat insulation structure 300 includes the first heat insulation portion 300e and the second heat insulation portion 300f, or the heat insulation structure 300 includes the first heat insulation portion 300e, the second heat insulation portion 300f, and the heat insulation recess 300d.

[0135] When the heat insulation structure 300 includes a first heat insulation part 300e, the first heat insulation part 300e is located between the outer surface and the inner surface of the outlet pipe 200. This arrangement makes reasonable use of the location of the first heat insulation part 300e, which can reduce the distance between the first heat insulation part 300e and the channel 210, so as to form the shortest thermal resistance barrier between the channel 210 and the high-temperature heat source located outside the outlet pipe 200. The wall thickness of the outlet pipe 200 at the first heat insulation part 300e is reduced, and the heat transfer path at the high-temperature heat source outside the outlet pipe 200 is weakened. In this way, the heat conduction efficiency can be significantly reduced, thereby significantly reducing the heat transfer effect, ensuring the temperature of the refrigerant flowing through the outlet pipe 200, and stabilizing the temperature of the refrigerant flowing through the outlet pipe 200.

[0136] When the heat insulation structure 300 includes a second heat insulation part 300f, the second heat insulation part 300f is connected to the outer surface of the outlet pipe 200. When the muffler and cylinder head 700 are assembled together, the second heat insulation part 300f abuts against the groove wall of the mounting groove 730 of the cylinder head 700. This arrangement creates a gap between the outer surface of the outlet pipe 200 and the groove wall of the mounting groove 730. Therefore, this arrangement increases the distance between the outlet pipe 200 and the groove wall of the mounting groove 730, and reduces the contact area between the cover plate assembly 10 and the cylinder head 700. This reduces heat transfer between the high-temperature heat source and the refrigerant in the channel 210, further reducing the heat transfer effect and ensuring a stable temperature of the refrigerant flowing through the outlet pipe 200, thereby improving intake efficiency.

[0137] When the heat insulation structure 300 includes the heat insulation recess 300d, the portion of the outlet pipe 200 located on the periphery of the channel 210 is recessed towards the channel 210 to form the heat insulation recess 300d. After the muffler and cylinder head 700 are assembled together, this arrangement can reduce the contact area between the cover plate assembly 10 and the cylinder head 700. In this way, the heat transfer between the high-temperature heat source and the refrigerant in the channel 210 can be reduced, further reducing the heat transfer effect and ensuring the temperature of the refrigerant flowing through the outlet pipe 200. The temperature of the refrigerant flowing through the outlet pipe 200 can be stabilized, thereby improving the intake efficiency.

[0138] In some embodiments, exemplarily, the thermal insulation structure 300 is arranged around the channel 210.

[0139] Alternatively, the insulation structure 300 may be an arc-shaped structure extending circumferentially along the channel 210.

[0140] Alternatively, there may be multiple insulation structures 300, which are arranged at intervals along the circumference of the channel 210.

[0141] In this embodiment, the arrangement position of the thermal insulation structure 300 is further defined.

[0142] For example, the heat insulation structure 300 is arranged around the channel 210, that is, the heat insulation structure 300 is arranged around the periphery of the channel 210. This arrangement can block the heat transfer of the high temperature heat source outside the outlet pipe 200 from all directions and angles, and block the heat diffusion and transfer to the refrigerant in the channel 210, resulting in good heat insulation effect.

[0143] For example, the heat insulation structure 300 is an arc-shaped structure extending circumferentially along the channel 210. This arrangement is beneficial to increasing the mating area and mating angle between the heat insulation structure 300 and the channel 210, which is beneficial to reducing the heat transfer between the high-temperature heat source and the refrigerant flowing through the outlet pipe 200, and is beneficial to improving the suction efficiency.

[0144] For example, there are multiple heat insulation structures 300, which are arranged at intervals along the circumference of the channel 210. This arrangement allows heat transfer from high-temperature heat sources outside the outlet pipe 200 to be blocked from multiple directions and angles, preventing heat diffusion and transfer to the refrigerant inside the channel 210, thus ensuring the heat insulation effect.

[0145] In some embodiments, exemplarily, such as Figure 1 , Figure 3 and Figure 4 As shown, the first heat insulation part 300e includes at least one of a heat insulation groove 300a, a heat insulation cavity 300b, and a heat insulation hole.

[0146] In this embodiment, the structure of the first heat insulation portion 300e is further defined such that the first heat insulation portion 300e includes at least one of a heat insulation groove 300a, a heat insulation cavity 300b, and a heat insulation hole. That is, the first heat insulation portion 300e includes a heat insulation groove 300a, or the first heat insulation portion 300e includes a heat insulation cavity 300b, or the first heat insulation portion 300e includes a heat insulation hole, or the first heat insulation portion 300e includes a heat insulation groove 300a and a heat insulation cavity 300b, or the first heat insulation portion 300e includes a heat insulation cavity 300b and a heat insulation hole, or the first heat insulation portion 300e includes a heat insulation groove 300a and a heat insulation hole, or the first heat insulation portion 300e includes a heat insulation groove 300a, a heat insulation cavity 300b, and a heat insulation hole.

[0147] When the first heat insulation section 300e includes a heat insulation groove 300a, the heat insulation groove 300a can reduce the amount of heat transferred from the high-temperature heat source to the refrigerant in the channel 210, thereby effectively reducing the heat transfer effect. Furthermore, the structural design of the heat insulation groove 300a reduces the flow rate of the refrigerant after it flows into the heat insulation groove 300a. The low-speed flow of the refrigerant in the heat insulation groove 300a further reduces the heat transfer effect, thereby maximizing the protection of the refrigerant in the channel 210 from heating, which helps improve the suction efficiency. Simultaneously, the gas in the heat insulation groove 300a has a low thermal conductivity; therefore, the structural design of the heat insulation groove 300a can further enhance the heat insulation effect by changing the thermal conductivity.

[0148] When the first heat insulation section 300e includes a heat insulation cavity 300b, the heat insulation cavity 300b has excellent heat insulation performance, which can reduce convective heat transfer and radiative heat transfer, and reduce the heat transferred from the high-temperature heat source to the refrigerant in the channel 210, thereby effectively reducing the heat transfer effect. In addition, the gas in the heat insulation cavity 300b has a low thermal conductivity; therefore, the structural design of the heat insulation cavity 300b can further enhance the heat insulation effect by changing the thermal conductivity.

[0149] When the first heat insulation section 300e includes heat insulation holes, the heat insulation holes can reduce the amount of heat transferred from the high-temperature heat source to the refrigerant in the channel 210, thereby effectively reducing the heat transfer effect. Furthermore, the structural design of the heat insulation holes reduces the flow rate of the refrigerant after it flows into the holes. The low-speed flow of refrigerant within the holes further reduces the heat transfer effect, thus maximizing the protection of the refrigerant in the channel 210 from heating, which helps improve suction efficiency. Simultaneously, the gas within the heat insulation holes has a low thermal conductivity; therefore, the structural design of the heat insulation holes can further enhance the heat insulation effect by changing the thermal conductivity.

[0150] For example, the first heat insulation part 300e includes at least one of heat insulation groove 300a and heat insulation hole, or the first heat insulation part 300e includes heat insulation hole, heat insulation groove 300a and heat insulation cavity 300b, or the first heat insulation part 300e includes heat insulation groove 300a and heat insulation cavity 300b, or the first heat insulation part 300e includes heat insulation hole and heat insulation cavity 300b.

[0151] In some embodiments, exemplarily, such as Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, when the first heat insulation part 300e includes the heat insulation groove 300a, along the circumferential direction of the channel 210, the heat insulation groove 300a is at least divided into a first heat insulation section 310 and a second heat insulation section 320.

[0152] The first insulation section 310 and the second insulation section 320 have different dimensions.

[0153] Along the direction from the vent pipe 200 to the cover plate 100, the first heat insulation section 310 is located above the second heat insulation section 320.

[0154] In this embodiment, the structure of the heat insulation groove 300a is further defined.

[0155] When the first heat insulation part 300e includes a heat insulation groove 300a, the structure of the heat insulation groove 300a is divided such that, along the circumferential direction of the channel 210, the heat insulation groove 300a is at least divided into a first heat insulation section 310 and a second heat insulation section 320. Specifically, along the direction from the vent pipe 200 to the cover plate 100, the first heat insulation section 310 is located above the second heat insulation section 320.

[0156] The first insulation section 310 and the second insulation section 320 have different dimensions. While ensuring the insulation effect, the existing structure of the vent pipe 200 can be reasonably utilized, reducing the material input for modifying the cover plate assembly 10 and reducing the modification cost of the cover plate assembly 10. This setting can also ensure the wall thickness of the vent pipe 200, thereby ensuring the structural strength of the vent pipe 200, so as to ensure the overall structural strength of the cover plate assembly 10 and provide structural support for ensuring the reliability of the silencer.

[0157] In some embodiments, exemplarily, such as Figure 2 As shown, along the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200, the width of the first heat insulation section 310 is L1, and the width of the second heat insulation section 320 is L2.

[0158] L1 is greater than or equal to L2.

[0159] In this embodiment, the mating structure of the first heat insulation section 310 and the second heat insulation section 320 is further defined.

[0160] Along the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200, the width of the first heat insulation section 310 is L1, and the width of the second heat insulation section 320 is L2, where L1 is greater than or equal to L2.

[0161] In other words, the width of the first heat insulation section 310 in the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200 is greater than or equal to the width of the second heat insulation section 320 in the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200.

[0162] After the muffler is assembled with the cylinder head 700 of the compressor 70, the first heat insulation section 310 is closer to the cylinder head 700 than the second heat insulation section 320; that is, the first heat insulation section 310 is closer to the high-temperature heat source than the second heat insulation section 320. By making the width L1 of the first heat insulation section 310 greater than or equal to the width L2 of the second heat insulation section 320, the stability and reliability of the heat insulation effect of the heat insulation structure 300 are ensured.

[0163] When L1 is greater than L2, not only is the distance between the channel 210 and the cylinder head 700 increased to enhance the heat insulation effect of the heat insulation structure 300, but the existing structure of the exhaust pipe 200 can also be used reasonably to ensure the wall thickness of the exhaust pipe 200 at the second heat insulation section 320, so as to ensure the structural strength of the exhaust pipe 200 and provide structural support for the effective and stable assembly of the exhaust pipe 200 and the valve plate 800 of the compressor 70.

[0164] When L1 equals L2, while ensuring the thermal insulation effect of the 300 thermal insulation structure, it also has the advantages of being easy to process, having low processing difficulty, and low processing cost.

[0165] In some embodiments, exemplarily, L1 and L2 satisfy: 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm.

[0166] In this embodiment, the value ranges of L1 and L2 are limited.

[0167] Among them, 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm. This is to balance the heat insulation effect of the heat insulation structure 300 and the structural strength of the cover plate assembly 10.

[0168] When at least one of L1 and L2 is less than 0.5mm, the width of the heat insulation groove 300a in the direction from the outer surface of the air outlet pipe 200 to the inner surface of the air outlet pipe 200 is too small, the distance from the channel 210 to the high-temperature heat source is too short, the heat insulation effect of the heat insulation structure 300 is poor, and the situation of air intake overheating will occur.

[0169] If at least one of L1 and L2 is greater than 1.5mm, the width of the heat insulation groove 300a in the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200 is too large, resulting in a thinner wall thickness of the vent pipe 200 at the heat insulation groove 300a, which leads to lower structural strength of the vent pipe 200 and affects the reliability and stability of the silencer.

[0170] In some embodiments, exemplarily, such as Figure 5 As shown, along the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove, the depth of the first insulation section 310 is H1, and the depth of the second insulation section 320 is H2.

[0171] H1 is greater than or equal to H2.

[0172] In this embodiment, the mating structure of the first heat insulation section 310 and the second heat insulation section 320 is further defined.

[0173] Along the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove, the depth of the first insulation section 310 is H1, and the depth of the second insulation section 320 is H2, where H1 is greater than or equal to H2.

[0174] In other words, the depth of the first insulation section 310 in the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove is greater than or equal to the depth of the second insulation section 320 in the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove.

[0175] After the muffler is assembled with the cylinder head 700 of the compressor 70, the first heat insulation section 310 is closer to the cylinder head 700 than the second heat insulation section 320; that is, the first heat insulation section 310 is closer to the high-temperature heat source than the second heat insulation section 320. By making the depth H1 of the first heat insulation section 310 greater than or equal to the depth H2 of the second heat insulation section 320, the stability and reliability of the heat insulation effect of the heat insulation structure 300 are ensured.

[0176] If H2 is greater than H1, then in order to ensure the structural strength of the vent pipe 200, the thickness of the vent pipe 200 at the second heat insulation section 320 needs to be increased. This requires increasing the material input of the vent pipe 200, which will increase the production cost of the cover plate assembly 10.

[0177] In some embodiments, exemplarily, H1 and H2 satisfy: H1≥1mm, H2≤1mm.

[0178] In this embodiment, the range of values ​​for H1 and H2 is limited.

[0179] Wherein, H1≥1mm, H2≤1mm. This setting ensures the heat insulation effect of the heat insulation structure 300 while maintaining the structural strength of the cover assembly 10, reducing the deformation of the cover assembly 10 when the compressor 70 is working, and providing structural support for ensuring the service life of the cover assembly 10.

[0180] If H1 is less than 1mm, then the depth of the first insulation section 310 in the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove is too small, the distance from the channel 210 to the high temperature heat source is too short, the insulation effect of the insulation structure 300 is poor, and the situation of air intake overheating will occur.

[0181] If H2 is greater than 1mm, then in order to ensure the structural strength of the vent pipe 200, the thickness of the vent pipe 200 at the second heat insulation section 320 needs to be increased. This requires increasing the material input of the vent pipe 200, which will increase the production cost of the cover plate assembly 10.

[0182] In some embodiments, exemplarily, such as Figure 1 , Figure 2 and Figure 5 As shown, the outer surface of the portion of the vent pipe 200 located outside the second heat insulation section 320 is the mounting surface 220, and the outer surface of the portion of the vent pipe 200 located between the channel 210 and the second heat insulation section 320 is the mating surface 230.

[0183] The mating surface 230 is closer to the bottom 340 of the heat insulation groove than the mounting surface 220.

[0184] In this embodiment, the structure of the cover plate assembly 10 is further defined.

[0185] The vent pipe 200 has a mounting surface 220 and a mating surface 230. The outer surface of the portion of the vent pipe 200 located outside the second heat insulation section 320 is the mounting surface 220, and the outer surface of the portion of the vent pipe 200 located between the channel 210 and the second heat insulation section 320 is the mating surface 230. The mounting surface 220 abuts against the gasket 900 located between the valve plate 800 and the vent pipe 200.

[0186] The mating surface 230 is closer to the bottom wall 340 of the insulation groove than the mounting surface 220. That is, the distance from the mating surface 230 to the bottom wall 340 of the insulation groove is less than the distance from the mounting surface 220 to the bottom wall 340 of the insulation groove.

[0187] In other words, after the muffler is assembled with the valve plate 800 and the gasket 900, the gasket 900 connects between the outlet pipe 200 and the valve plate 800, and the mating surface 230 and the gasket 900 are spaced apart; that is, there is a gap between the mating surface 230 and the gasket 900. This arrangement increases the distance between the outlet pipe 200 and the high-temperature heat source (e.g., the valve plate 800 and the gasket 900), and reduces the contact area between the cover assembly 10 and the high-temperature heat source, thereby reducing heat transfer between the high-temperature heat source and the refrigerant in the channel 210 and enhancing the insulation effect. At the same time, the thermal conductivity of air is lower than that of the material. The gap between the outlet pipe 200 and the gasket 900 has a lower thermal conductivity than the contact between the outlet pipe 200 and the gasket 900, further enhancing the insulation effect through the change in thermal conductivity.

[0188] In some embodiments, exemplarily, the height difference between the mounting surface 220 and the mating surface 230 along the direction from the opening 330 of the heat insulation groove to the bottom 340 of the heat insulation groove is greater than or equal to 0.2 mm.

[0189] In this embodiment, the mating structure of the mounting surface 220 and the mating surface 230 is further defined.

[0190] Specifically, along the direction from the opening 330 of the heat insulation groove to the bottom 340 of the heat insulation groove, the height difference between the mounting surface 220 and the mating surface 230 is greater than or equal to 0.2mm, so as to ensure the heat insulation effect of the heat insulation structure 300.

[0191] If the height difference between the mounting surface 220 and the mating surface 230 is less than 0.2mm, then the distance between the mating surface 230 and the pad 900 is relatively short, the refrigerant is greatly affected by the high-temperature heat source, which is not conducive to improving the suction efficiency and there is a possibility of suction overheating. The effect on improving the efficiency of the compressor 70 is not obvious.

[0192] In some embodiments, exemplarily, when the first heat insulation portion 300e includes a heat insulation cavity 300b, the heat insulation cavity 300b is a vacuum cavity.

[0193] Alternatively, insulation material may be arranged inside the insulation cavity 300b.

[0194] Alternatively, the thermal conductivity of the portion of the vent pipe 200 located between the insulation cavity 300b and the channel 210 is less than the thermal conductivity of the portion of the vent pipe 200 located between the insulation cavity 300b and the outer surface of the vent pipe 200.

[0195] In this embodiment, the structure of the cover plate assembly 10 is further defined.

[0196] When the first heat insulation part 300e includes the heat insulation cavity 300b, the heat insulation cavity 300b is a vacuum cavity. The vacuum cavity has good heat insulation performance, which can reduce heat transfer, reduce convective heat transfer and radiative heat transfer, and reduce the heat transferred from the high temperature heat source to the refrigerant in the channel 210, so as to effectively reduce the heat transfer effect.

[0197] When the first heat insulation part 300e includes the heat insulation cavity 300b, the heat insulation cavity 300b is filled with heat insulation material. That is, by filling the heat insulation cavity 300b with a material that can block the heat flow, the heat transferred from the high temperature heat source to the refrigerant in the channel 210 is reduced, so as to effectively reduce the heat transfer effect.

[0198] When the first heat insulation part 300e includes the heat insulation cavity 300b, the thermal conductivity of the portion of the vent pipe 200 located between the heat insulation cavity 300b and the channel 210 is less than the thermal conductivity of the portion of the vent pipe 200 located between the heat insulation cavity 300b and the outer surface of the vent pipe 200. That is, the thermal conductivity of the outer cavity wall of the heat insulation cavity 300b is less than the thermal conductivity of the inner cavity wall of the heat insulation cavity 300b. By limiting the variation in thermal conductivity at different locations of the vent pipe 200, a dual heat insulation effect of the heat insulation cavity 300b and the thermally conductive material is achieved, which helps to enhance the heat insulation effect of the heat insulation structure 300 and thus reduce heat transfer.

[0199] In some embodiments, exemplarily, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the second heat insulation portion 300f includes at least one heat insulation protrusion 300c.

[0200] The heat insulation protrusion 300c protrudes from the outer surface of the air pipe 200.

[0201] When there are multiple heat insulation protrusions 300c, the multiple heat insulation protrusions 300c are arranged at intervals along the circumference of the channel 210.

[0202] In this embodiment, the specific structure of the thermal insulation structure 300 is further defined.

[0203] The second heat insulation part 300f includes at least one heat insulation protrusion 300c. When the muffler and the cylinder head 700 are assembled together, the heat insulation protrusion 300c abuts against the groove wall of the mounting groove 730 of the cylinder head 700 to meet the usage requirements of the outer surface of the exhaust pipe 200 being spaced apart from the groove wall of the mounting groove 730.

[0204] The number of thermal insulation structures 300 is at least one.

[0205] When there are multiple heat insulation protrusions 300c, the multiple heat insulation protrusions 300c are arranged at intervals along the circumference of the channel 210. This arrangement can support the vent pipe 200 from multiple directions and angles, so that different positions on the outer surface of the vent pipe 200 can be separated from the groove wall of the mounting groove 730, so as to meet the usage requirements of the spaced arrangement between the outer surface of the vent pipe 200 and the groove wall of the mounting groove 730 and ensure the heat insulation effect.

[0206] The heat insulation protrusion 300c protrudes from the outer surface of the vent pipe 200. That is, the heat insulation protrusion 300c can separate different positions of the outer surface of the vent pipe 200 from the groove wall of the mounting groove 730 to meet the usage requirements of the spaced arrangement between the outer surface of the vent pipe 200 and the groove wall of the mounting groove 730, and ensure the heat insulation effect.

[0207] For example, the heat insulation protrusion 300c extends from the outer surface of the vent 200 in a direction away from the channel 210.

[0208] In some embodiments, for example, the inner surface of the vent pipe 200 and the outer surface of the vent pipe 200 are both recessed toward the channel 210 at the heat insulation recess 300d; or the outer surface of the vent pipe 200 is recessed toward the channel 210 at the heat insulation recess 300d.

[0209] In this embodiment, the shape of the heat-insulating recess 300d is further defined.

[0210] Both the inner and outer surfaces of the outlet pipe 200 are recessed towards the channel 210 at the heat insulation recess 300d. This arrangement further reduces the contact area between the cover assembly and the cylinder head 700, thereby further reducing heat transfer between the high-temperature heat source and the refrigerant in the channel 210, further reducing the heat transfer effect, ensuring the temperature of the refrigerant flowing through the outlet pipe 200, stabilizing the temperature of the refrigerant flowing through the outlet pipe 200, and thus improving the intake efficiency.

[0211] The outer surface of the exhaust pipe 200 is recessed towards the channel 210 at the heat insulation recess 300d. This design not only meets the requirement of reducing the contact area between the cover assembly and the cylinder head 700, but also has the advantages of convenient processing and low processing difficulty, which helps to reduce the processing cost of the product.

[0212] In some embodiments, exemplarily, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the cover plate assembly 10 includes at least one first limiting rib 400 and at least one second limiting rib 500.

[0213] The vent pipe 200 is connected between the first limiting rib 400 and the second limiting rib 500.

[0214] The first limiting rib 400 and the second limiting rib 500 are both used for the installation and fixation of the air outlet pipe 200.

[0215] In this embodiment, the structure of the cover assembly 10 is further defined such that the cover assembly 10 includes a first limiting rib 400 and a second limiting rib 500. The vent pipe 200 is connected between the first limiting rib 400 and the second limiting rib 500.

[0216] After the muffler and cylinder head 700 are assembled, the first limiting rib 400 is engaged in the first recessed structure 710 of the cylinder head 700, and the second limiting rib 500 is engaged in the second recessed structure 720 of the cylinder head 700.

[0217] The first limiting rib 400 and the first recessed structure 710 cooperate, and the second limiting rib 500 and the second recessed structure 720 cooperate to limit the assembly dimensions of the muffler and the cylinder head 700 from multiple directions and angles, limit the displacement of the muffler relative to the cylinder head 700, and provide structural support to ensure the flow path of the refrigerant.

[0218] The number of first limiting ribs 400 is at least one, and / or the number of second limiting ribs 500 is at least one. When the number of at least one of the first limiting ribs 400 and the second limiting ribs 500 is multiple, the limiting area of ​​the muffler and cylinder head 700 can be increased, which is beneficial to improving the stability and reliability of the assembly of the muffler and cylinder head 700.

[0219] It is understandable that the number of first limiting protrusions 400 and first recessed structures 710 is the same, and each first limiting protrusion 400 is matched with a first recessed structure 710 for limiting.

[0220] It is understandable that the number of second limiting ribs 500 and second recessed structures 720 is the same, and each second limiting rib 500 is matched with a second recessed structure 720 for limiting.

[0221] In some embodiments, exemplarily, such as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the cover plate assembly 10 includes at least one third limiting rib 600.

[0222] The third limiting rib 600 is located on one side of the air outlet pipe 200.

[0223] The third limiting rib 600 is used for the installation and fixation of the air outlet pipe 200.

[0224] In this embodiment, the structure of the cover plate assembly 10 is further defined such that the cover plate assembly 10 includes a third limiting rib 600, which is disposed on one side of the air outlet pipe 200.

[0225] After the muffler and valve plate 800 are assembled, the third limiting rib 600 is engaged in the slot 810 of the valve plate 800.

[0226] The third limiting rib 600 and the slot 810 cooperate to limit the assembly dimensions of the muffler and the valve plate 800, limit the displacement of the muffler relative to the valve plate 800, and provide structural support to ensure the flow path of the refrigerant.

[0227] The number of third limiting ribs 600 is at least one. When there are multiple third limiting ribs 600, the limiting area of ​​the muffler and valve plate 800 can be increased, which is beneficial to improving the stability and reliability of the assembly of the muffler and valve plate 800.

[0228] A muffler according to some embodiments of this application includes: a cover plate assembly 10 of any of the above embodiments.

[0229] The muffler provided in this application includes the cover plate assembly 10 of any of the above embodiments, and therefore has all the beneficial effects of the cover plate assembly 10, which will not be described in detail here.

[0230] like Figure 5 and Figure 6 As shown, a compressor 70 according to some embodiments of the present application includes a cylinder head 700, a valve plate 800, and a muffler as described in the above embodiments.

[0231] The cylinder head 700 is provided with a mounting groove 730.

[0232] A portion of the groove wall of the mounting groove 730 is recessed to form a first recessed structure 710 and a second recessed structure 720.

[0233] The valve plate 800 is provided with a slot 810.

[0234] A portion of the vent pipe 200 is located within the mounting slot 730.

[0235] The first limiting rib 400 of the cover plate assembly 10 is engaged with the first recessed structure 710.

[0236] The second limiting rib 500 of the cover plate assembly 10 is engaged with the second recessed structure 720.

[0237] The third limiting rib 600 of the cover plate assembly 10 is engaged in the slot 810.

[0238] When the heat insulation structure 300 includes a second heat insulation part 300f, the second heat insulation part 300f abuts against the groove wall of the mounting groove 730.

[0239] The compressor 70 provided in this application includes the silencer of the above embodiment, and therefore has all the beneficial effects of the above silencer, which will not be described in detail here.

[0240] After the muffler and cylinder head 700 are assembled, the first limiting rib 400 is engaged in the first recessed structure 710 of the cylinder head 700, and the second limiting rib 500 is engaged in the second recessed structure 720 of the cylinder head 700.

[0241] The first limiting rib 400 and the first recessed structure 710 cooperate, and the second limiting rib 500 and the second recessed structure 720 cooperate to limit the assembly dimensions of the muffler and the cylinder head 700 from multiple directions and angles, limit the displacement of the muffler relative to the cylinder head 700, and provide structural support to ensure the flow path of the refrigerant.

[0242] The third limiting rib 600 and the slot 810 cooperate to limit the assembly dimensions of the muffler and the valve plate 800, limit the displacement of the muffler relative to the valve plate 800, and provide structural support to ensure the flow path of the refrigerant.

[0243] When the heat insulation structure 300 includes a second heat insulation portion 300f, the second heat insulation portion 300f abuts against the groove wall of the mounting groove 730. This arrangement creates a gap between the outer surface of the outlet pipe 200 and the groove wall of the mounting groove 730. Therefore, this configuration increases the distance between the outlet pipe 200 and the groove wall of the mounting groove 730, and reduces the contact area between the cover plate assembly 10 and the cylinder head 700. This reduces heat transfer between the high-temperature heat source and the refrigerant in the channel 210, further reducing the heat transfer effect and ensuring a stable temperature of the refrigerant flowing through the outlet pipe 200, thereby improving suction efficiency.

[0244] A refrigeration device according to some embodiments of the present application includes: the compressor 70 of the above embodiments.

[0245] The refrigeration equipment provided in this application includes the compressor 70 of the above embodiments, and therefore has all the beneficial effects of the compressor 70, which will not be described in detail here.

[0246] A vehicle according to some embodiments of this application includes: the compressor 70 described in the above embodiments.

[0247] The vehicle provided in this application includes the compressor 70 of the above embodiment, and therefore has all the beneficial effects of the compressor 70, which will not be described in detail here.

[0248] For example, refrigeration equipment includes refrigerators, freezers, and freezers, etc., which will not be listed here.

[0249] For example, the vehicle can be a new energy vehicle. New energy vehicles include pure electric vehicles, range-extended electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.

[0250] The vehicle can also be a gasoline-powered car.

[0251] For example, a muffler is used for compressor 70. Compressor 70 includes a reciprocating compressor.

[0252] Exemplarily, the muffler includes a cover assembly 10. The cover assembly 10 includes an exhaust pipe 200 and a cover 100. The exhaust pipe 200 is provided with a heat insulation groove 300a, which, along the circumference of the channel 210, is at least divided into a first heat insulation section 310 and a second heat insulation section 320. Along the direction from the exhaust pipe 200 to the cover 100, the first heat insulation section 310 is located above the second heat insulation section 320. The heat insulation groove 300a serves to separate the channel 210 of the exhaust pipe 200 from the outer surface of the exhaust pipe 200. The outer surface of the exhaust pipe 200 is provided with heat insulation ribs. Both the heat insulation groove 300a and the heat insulation ribs 300c reduce the heat transfer effect between the cylinder head 700 and the muffler, thereby maximizing the protection of the cryogenic refrigerant from heating and improving intake efficiency. The cover assembly of this application also has the advantages of simple processing, high reliability, and high efficiency.

[0253] For example, along the direction from the outer surface of the vent pipe 200 to the inner surface of the vent pipe 200, the width of the first heat insulation section 310 is L1, and the width of the second heat insulation section 320 is L2. 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm, L1≥L2.

[0254] For example, along the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove, the depth of the first insulation section 310 is H1, and the depth of the second insulation section 320 is H2. H1≥H2, H1≥1mm, H2≤1mm.

[0255] For example, the outer surface of the vent pipe 200 located outside the second insulation section 320 is the mounting surface 220, and the outer surface of the vent pipe 200 located between the channel 210 and the second insulation section 320 is the mating surface 230. The height difference between the mounting surface 220 and the mating surface 230 along the direction from the opening 330 of the insulation groove to the bottom 340 of the insulation groove is greater than or equal to 0.2 mm.

[0256] For example, the heat insulation protrusions 300c are circumferentially distributed at the mating point between the exhaust pipe 200 and the cylinder head 700, and the number of heat insulation protrusions 300c is greater than or equal to 2.

[0257] For example, the outer surface of the exhaust pipe 200 is provided with a first limiting rib 400 and a second limiting rib 500, and the cylinder head 700 is provided with a first recessed structure 710 and a second recessed structure 720. The first limiting rib 400 is engaged with the first recessed structure 710, and the second limiting rib 500 is engaged with the second recessed structure 720, which serves as a positioning function.

[0258] For example, the number of first limiting ribs 400 and first recessed structures 710 is at least one, and the number of second limiting ribs 500 and second recessed structures 720 is at least one. Each first limiting rib 400 mates with one first recessed structure 710, and each second limiting rib 500 mates with one second recessed structure 720.

[0259] For example, this application reasonably sets the structure of the cover plate assembly 10. By providing a heat-insulating protrusion 300c on the outside of the exhaust pipe 200, the contact area between the muffler and the cylinder head 700 is reduced, thereby reducing heat transfer between the two. At the same time, a heat-insulating groove 300a is provided on the side of the exhaust pipe 200 away from the cover plate 100. Utilizing the low thermal conductivity of the muffler material itself and the low-speed refrigerant in the heat-insulating groove 300a, the heat transfer effect is further reduced, thereby maximizing the protection of the low-temperature refrigerant from heating, thereby improving intake efficiency.

[0260] For example, the heat insulation groove 300a surrounds the channel 210.

[0261] For example, the heat insulation groove 300a is an arc-shaped groove extending circumferentially along the channel 210.

[0262] For example, there are multiple heat insulation channels 300a, which are arranged at circumferential intervals along the channel 210.

[0263] It is understandable that the groove 330 of the heat insulation groove faces the valve plate 800.

[0264] For example, L1 = 0.6mm, L1 = 0.7mm, L1 = 0.8mm, L1 = 0.9mm, L1 = 1mm, L1 = 1.1mm, L1 = 1.2mm, L1 = 1.3mm and L1 = 1.4mm, etc., which will not be listed here one by one.

[0265] Examples include L2 = 0.6mm, L2 = 0.7mm, L2 = 0.8mm, L2 = 0.9mm, L2 = 1mm, L2 = 1.1mm, L2 = 1.2mm, L2 = 1.3mm, and L2 = 1.4mm, etc., which will not be listed here one by one.

[0266] Examples include H1 = 1.2mm, H1 = 1.4mm, H1 = 1.5mm, H1 = 1.6mm, and H1 = 1.8mm, etc., which will not be listed here one by one.

[0267] Examples include H2 = 0.9 mm, H2 = 0.8 mm, H2 = 0.6 mm, and H2 = 0.5 mm, etc., which will not be listed here one by one.

[0268] For example, along the direction from the opening 330 of the heat insulation groove to the bottom 340 of the heat insulation groove, the height difference between the mounting surface 220 and the mating surface 230 includes 0.3mm, 0.4mm, 0.5mm, 0.6mm and 0.7mm, etc., which will not be listed here.

[0269] For example, the insulation cavity 300b is arranged around the channel 210.

[0270] For example, the heat insulation cavity 300b is an arc-shaped cavity extending circumferentially along the channel 210.

[0271] For example, there are multiple heat insulation cavities 300b, which are arranged at circumferential intervals along the channel 210.

[0272] For example, insulation materials include: fiberglass, gold, silver, nickel, aluminum foil, and water, etc., which will not be listed here.

[0273] For example, Figure 7 The diagram illustrates the refrigerant velocity distribution inside the muffler during the suction phase of the compressor in this application. The pressure difference between the inlet and outlet pipes 200 of the muffler is kept constant, and the flow field information after flow stabilization is obtained. Figure 7 As shown, during the suction phase of the compressor 70, when the refrigerant is discharged from the outlet pipe 200 of the muffler, the refrigerant in the first insulation section 310 and the second insulation section 320 hardly flows. The low-speed gas has a low heat transfer coefficient, thus playing a role in heat insulation.

[0274] In this application, the term "multiple" refers to two or more unless otherwise expressly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0275] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The above descriptions are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cover plate assembly for a muffler, characterized in that, include: Cover plate; An air outlet pipe is provided on the first side of the cover plate. The inner surface of the air outlet pipe encloses a channel. The air outlet pipe first extends in a direction away from the cover plate, and then extends towards the plane where the second side of the cover plate is located. The first side and the second side of the cover plate are adjacent sides of the cover plate. A heat insulation structure is provided on the portion of the air outlet pipe extending toward the second side of the cover plate, and the heat insulation structure includes at least one of a first heat insulation portion, a second heat insulation portion, and a heat insulation recess. The first heat insulation part is located between the outer surface of the air outlet pipe and the inner surface of the air outlet pipe; The second heat insulation part is connected to the outer surface of the air outlet pipe; The portion of the vent pipe located on the periphery of the channel is recessed towards the channel to form the heat insulation recess.

2. The cover plate assembly according to claim 1, characterized in that, The heat insulation structure is arranged around the channel; or The heat insulation structure is an arc-shaped structure extending circumferentially along the channel; or The number of the heat insulation structures is multiple, and the multiple heat insulation structures are arranged at intervals along the circumference of the channel.

3. The cover plate assembly according to claim 1 or 2, characterized in that, The first heat insulation part includes at least one of heat insulation groove, heat insulation cavity and heat insulation hole.

4. The cover plate assembly according to claim 3, characterized in that, When the first heat insulation part includes the heat insulation groove, along the circumferential direction of the channel, the heat insulation groove is at least divided into a first heat insulation section and a second heat insulation section, and the first heat insulation section and the second heat insulation section have different sizes; Along the direction from the vent pipe to the cover plate, the first heat insulation section is located above the second heat insulation section.

5. The cover plate assembly according to claim 4, characterized in that, Along the direction from the outer surface of the vent pipe to the inner surface of the vent pipe, the width of the first heat insulation section is L1, and the width of the second heat insulation section is L2, where L1 is greater than or equal to L2.

6. The cover plate assembly according to claim 5, characterized in that, L1 and L2 satisfy: 0.5mm≤L1≤1.5mm, 0.5mm≤L2≤1.5mm.

7. The cover plate assembly according to claim 4, characterized in that, Along the direction from the opening of the heat insulation groove to the bottom of the heat insulation groove, the depth of the first heat insulation section is H1, and the depth of the second heat insulation section is H2, where H1 is greater than or equal to H2.

8. The cover plate assembly according to claim 7, characterized in that, H1 and H2 satisfy: H1≥1mm, H2≤1mm.

9. The cover plate assembly according to claim 4, characterized in that, The outer surface of the portion of the vent pipe located outside the second heat insulation section is the mounting surface, and the outer surface of the portion of the vent pipe located between the channel and the second heat insulation section is the mating surface. The mating surface is closer to the bottom of the heat insulation groove than the mounting surface.

10. The cover plate assembly according to claim 9, characterized in that, Along the direction from the opening of the heat insulation groove to the bottom of the heat insulation groove, the height difference between the mounting surface and the mating surface is greater than or equal to 0.2 mm.

11. The cover plate assembly according to claim 3, characterized in that, When the first heat insulation part includes the heat insulation cavity, the heat insulation cavity is a vacuum cavity; or The heat insulation cavity is filled with heat insulation material; or The thermal conductivity of the portion of the vent pipe located between the insulation cavity and the channel is less than the thermal conductivity of the portion of the vent pipe located between the outer surface of the insulation cavity and the vent pipe.

12. The cover plate assembly according to claim 1 or 2, characterized in that, The second heat insulation part includes at least one heat insulation protrusion that protrudes out of the outer surface of the air outlet pipe; When there are multiple heat-insulating protrusions, the multiple heat-insulating protrusions are arranged at intervals along the circumference of the channel.

13. The cover plate assembly according to claim 1 or 2, characterized in that, The inner surface of the vent pipe and the outer surface of the vent pipe are both recessed towards the channel at the portion of the heat insulation recess; or The outer surface of the vent pipe is recessed in the direction of the channel at the heat insulation recess.

14. The cover plate assembly according to claim 1 or 2, characterized in that, Also includes: At least one first limiting rib; At least one second limiting rib, the air outlet pipe being connected between the first limiting rib and the second limiting rib; Both the first limiting rib and the second limiting rib are used for the installation and fixation of the air outlet pipe.

15. The cover plate assembly according to claim 1 or 2, characterized in that, Also includes: At least one third limiting rib is provided on one side of the air outlet pipe, and the third limiting rib is used for the installation and fixation of the air outlet pipe.

16. A silencer, characterized in that, include: The cover plate assembly as described in any one of claims 1 to 15.

17. A compressor, characterized in that, include: A cylinder head, wherein the cylinder head is provided with a mounting groove, and a portion of the groove wall is recessed to form a first recessed structure and a second recessed structure; Valve plate, wherein the valve plate is provided with a slot; and The muffler as claimed in claim 16, wherein a portion of the exhaust pipe is located within the mounting groove, the first limiting rib of the cover plate assembly is engaged with the first recessed structure, the second limiting rib of the cover plate assembly is engaged with the second recessed structure, and the third limiting rib of the cover plate assembly is engaged with the slot. Wherein, when the heat insulation structure includes a second heat insulation part, the second heat insulation part abuts against the wall of the mounting groove.

18. A refrigeration device, characterized in that, include: The compressor as described in claim 17.

19. A vehicle, characterized in that, include: The compressor as described in claim 17.

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