A new cylinder head sealing structure

Abstract

The utility model discloses a novel cylinder cover sealing structure, include: cylinder cover, its bottom end center is equipped with round recess, install rubber O type ring in round recess, and round recess is used for accommodating suction silencer and is inserted and sealed and is clamped, and the front surface of cylinder cover is equipped with the profiled arc air inlet groove, is located the top of round recess, and is communicated with round recess, and the top interval of profiled arc air inlet groove is provided with the vertical valve plate limiting board compression tight rib, and the inner chamber reinforcing rib is arranged between valve plate limiting board compression tight rib and profiled arc air inlet groove. The novel cylinder cover sealing structure, through not changing the cylinder cover appearance size, keeps the function of inlaying reinforcing rib and valve plate limiting board compression tight rib under the condition of increasing the inner chamber volume, improves high pressure exhaust flow heat dissipation, improves the starting capacity and heat exchange efficiency of compressor, changes the installation mode of the existing suction silencer and cylinder cover simultaneously, solves the noise problem of the resonance produced by the vibration of suction silencer under high speed.

Description

Technical Field

[0001] This utility model relates to the field of parts casting production technology, and in particular to a novel cylinder head sealing structure. Background Technology

[0002] In a fully enclosed compressor, the valve assembly is sealed and heat exchanged through the cylinder head. The volume and sealing performance of the cylinder head determine the compressor's heat exchange efficiency. Common cylinder heads have mounting slots for the intake muffler cavity, embedded reinforcing ribs, and limiting plate clamping ribs. The intake muffler and cylinder head are installed using a slotted structure with a clearance fit. This facilitates installation and allows for heat dissipation from the intake muffler cavity, preventing overheating and reduced cooling capacity. The embedded reinforcing ribs and limiting plate clamping ribs provide better sealing at the high-temperature, high-pressure exhaust end. With unchanged external dimensions, a more compact internal volume hinders high-pressure exhaust flow and heat dissipation, leading to higher cylinder head temperatures and a greater likelihood of overheating at the intake muffler end, further reducing cooling capacity.

[0003] The cylinder head, designed to accommodate the installation of the intake muffler, incorporates internal reinforcing ribs and valve plate limiting ribs, resulting in a very compact internal volume. This design is not conducive to high-pressure exhaust flow and heat dissipation. Furthermore, the cylinder head and intake muffler are fitted with a clearance fit for ease of installation. While the cylinder head bolts lock the front-to-back displacement of the intake muffler, slight lateral movement still occurs. At high speeds, the vibration of the pump body in the variable frequency compressor amplifies this lateral movement of the intake muffler, leading to resonance and causing mid-to-high frequency noise. As the speed changes, the pump body vibration frequency also changes, resulting in varying noise levels.

[0004] In conclusion, it is necessary to design a new cylinder head sealing structure to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is that, in view of the existing installation method of intake muffler and cylinder head, the vibration of intake muffler at high speed will cause resonance and generate noise. A new cylinder head sealing structure is proposed.

[0006] To solve the above-mentioned technical problems, this utility model provides a novel cylinder head sealing structure, including: a cylinder head with a circular groove at the center of its bottom end, a rubber O-ring installed in the circular groove, the circular groove being used to accommodate and seal the intake muffler; a contoured arc-shaped intake groove is provided on the front side of the cylinder head, located above the circular groove and communicating with the circular groove; vertical valve plate limiting plate clamping ribs are provided at intervals above the contoured arc-shaped intake groove; an inner cavity reinforcing rib is provided between the valve plate limiting plate clamping rib and the contoured arc-shaped intake groove, the inner cavity reinforcing rib being arranged around the outside of the contoured arc-shaped intake groove.

[0007] In a preferred embodiment of this solution, an O-ring mounting groove is provided circumferentially inside the circular groove, and a rubber O-ring is installed in the O-ring mounting groove.

[0008] In a preferred embodiment of this solution, a back-cut-out groove is provided on the back of the cylinder head, and a contoured arc-shaped air intake groove is provided correspondingly to the back-cut-out groove.

[0009] In a preferred embodiment of this solution, a heat-insulating material layer is provided on the inner surface of the contoured arc-shaped air intake groove.

[0010] In a preferred embodiment of this solution, a plurality of mounting through holes are provided on the edge of the cylinder head.

[0011] Implementing this utility model has the following beneficial effects:

[0012] This novel cylinder head sealing structure increases the internal cavity volume without changing the cylinder head's external dimensions, while retaining the functions of the embedded reinforcing ribs and valve plate limiting plate clamping ribs. This improves the heat dissipation of high-pressure exhaust flow, enhances the compressor's starting capability and heat exchange efficiency, and changes the existing installation method of the intake muffler and cylinder head, solving the noise problem caused by resonance due to vibration of the intake muffler at high speeds. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of the novel cylinder head sealing structure provided by this utility model;

[0015] Figure 2 This is a cross-sectional view of the novel cylinder head sealing structure;

[0016] Figure 3 This is a schematic diagram of the rear structure of the novel cylinder head sealing structure;

[0017] In the diagram: 1. Cylinder head; 2. Circular groove; 3. O-ring mounting groove; 4. Contour arc-shaped intake groove; 5. Valve plate limiting plate clamping rib; 6. Inner cavity reinforcing rib; 7. Back hollowed-out groove; and 8. Mounting through hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-2 , Figure 1 A schematic diagram of the novel cylinder head sealing structure provided by this utility model; Figure 2 This is a cross-sectional view of the novel cylinder head sealing structure; the novel cylinder head sealing structure includes: cylinder head 1.

[0020] A circular groove 2 is provided at the center of the bottom end of the cylinder head 1. An O-ring mounting groove 3 is provided circumferentially inside the circular groove 2, and a rubber O-ring is installed in the O-ring mounting groove 3. The circular groove 2 is used to accommodate and seal the intake muffler during insertion.

[0021] A contoured arc-shaped intake groove 4 is provided on the front side of the cylinder head 1, located above and communicating with the circular groove 2. The inner surface of the contoured arc-shaped intake groove 4 is provided with a heat-insulating material layer to prevent heat from the exhaust end from being transferred to the intake end, thereby minimizing the possibility of intake overheating.

[0022] Vertical valve plate limiting plate clamping ribs 5 are provided at intervals above the contoured arc-shaped air intake groove 4. An inner cavity reinforcing rib 6 is provided between the valve plate limiting plate clamping rib 5 and the contoured arc-shaped air intake groove 4. The inner cavity reinforcing rib 6 is arranged around the outside of the contoured arc-shaped air intake groove 4.

[0023] A recessed groove 7 is provided on the back of the cylinder head 1, and a contoured arc-shaped air intake groove 4 is correspondingly positioned to the recessed groove 7. Please refer to [link / reference]. Figure 3 , Figure 3 This is a schematic diagram of the back structure of the novel cylinder head sealing structure.

[0024] In addition, for ease of installation, multiple mounting through holes 8 are provided on the edge of the cylinder head 1.

[0025] This novel cylinder head sealing structure, without altering the cylinder head's external dimensions and retaining the functions of the embedded reinforcing ribs and valve plate limiting plate clamping ribs, incorporates a contoured arc-shaped intake groove. This groove mirrors the intake port of the intake muffler cavity, replacing the intake muffler's exhaust port. In other words, the shape and size of the intake port on the front of the cylinder head are identical to the original intake muffler port, reducing the installation dimensions of the intake muffler cavity. This design not only retains the internal reinforcing ribs and valve plate limiting plate clamping ribs but also increases the internal cavity volume. The back of the cylinder head is hollowed out, facilitating material molding and demolding, and allowing for heat dissipation at the intake end. A circular groove is designed at the bottom of the cylinder head, which, in conjunction with a rubber O-ring, provides an interference fit with the intake muffler. The contractile nature of the rubber O-ring facilitates the installation of the intake muffler into the cylinder head's intake port, while also ensuring a tight seal and preventing loosening or vibration.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel cylinder head sealing structure, characterized in that, include: The cylinder head has a circular groove at its bottom center, in which a rubber O-ring is installed. The circular groove is used to accommodate and seal the intake muffler. A contoured arc-shaped intake groove is provided on the front side of the cylinder head, located above and communicating with the circular groove. Vertical valve plate limiting plate clamping ribs are provided at intervals above the contoured arc-shaped intake groove. An inner cavity reinforcing rib is provided between the valve plate limiting plate clamping rib and the contoured arc-shaped intake groove. The inner cavity reinforcing rib is arranged around the outside of the contoured arc-shaped intake groove.

2. The novel cylinder head sealing structure according to claim 1, characterized in that, An O-ring mounting groove is provided circumferentially inside the circular groove, and the rubber O-ring is installed in the O-ring mounting groove.

3. The novel cylinder head sealing structure according to claim 1, characterized in that, The cylinder head has a back hollowed-out groove, and the contoured arc-shaped air intake groove is arranged in a corresponding manner to the back hollowed-out groove.

4. The novel cylinder head sealing structure according to claim 1, characterized in that, The inner surface of the contoured arc-shaped air intake groove is provided with a heat insulation material layer.

5. The novel cylinder head sealing structure according to claim 1, characterized in that, The cylinder head has multiple mounting through holes along its edge.

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