Integral valve seat and compressor

Abstract

The present invention provides an integrated valve seat and a compressor. The integrated valve seat includes: a cover plate, one side of the cover plate closing the exhaust port of the cylinder head; at least two elastic restraint members integrally formed with the cover plate, a first end of the elastic restraint member connecting the cover plate, and a second end fixed to the cylinder head. The present invention can reduce the component cost by eliminating the slotting of the cylinder head, and the valve plate and the baffle are integrated to reduce the material cost, thus greatly reducing the overall manufacturing cost of the compressor.

Description

Technical Field

[0001] The present invention relates to the field of compressors, and more particularly to an integrated valve seat and a compressor. Background Art

[0002] In the prior art, the exhaust seal of the cylinder head uses a baffle + valve plate method to maintain pressure and seal the exhaust port. The baffle and the valve plate are fixed to the cylinder head by riveting / bolting. This connection scheme is greatly affected by the accuracy of the valve plate groove of the cylinder head. Once the valve plate groove is defective, it will cause batch leakage detection failure and cannot be reworked.

[0003] Figure 1 Schematic diagram of the valve seat after installation in the prior art. Figure 2 Cross-sectional view of the valve seat after installation in the prior art. As Figure 1 and 2 shown, a crankshaft 11 is provided in the center of the cylinder head 1 of the compressor. The valve seat 2 can be arranged around the cylinder head 1. The valve seat 2 is generally of a tongue spring structure, and the tongue spring structure is composed of a valve plate 23 and a baffle 21. The valve plate 23 and the baffle 21 are installed on the valve seat body of the compressor to form a valve seat assembly. Among them, the first end of the valve plate 23 covers the exhaust port 13 of the compressor. The exhaust port 13 needs to exhaust periodically, and the valve plate 23 sealed at the exhaust port 13 also needs to be lifted periodically to facilitate the periodic opening of the exhaust port 13. In order to prevent the valve plate 23 from opening too much, a baffle 21 is also provided on the valve plate 23. The baffle 21 presses on the valve plate 23. The second ends of the baffle 21 and the valve plate 23 are both fixed in the mounting holes 12 of the cylinder head 1 by bolts 22. Under the action of the airflow in the compressor, the first end of the baffle 21 can be effectively lifted with the valve plate 23. After the airflow pressure weakens, the baffle 21 presses down to drive the valve plate 23 to close the exhaust port 13. In this structure, the valve plate 23 and the baffle 21 are integrally oval or strip-shaped, occupying a large area on the surface of the cylinder head 1. Moreover, mounting holes 12 must be machined on the surface of the cylinder head 1, which increases the process steps, and the cylinder head 1 is easily deformed during the process of machining the mounting holes 12, which easily weakens the sealing effect of the compressor or increases the vibration during the operation of the compressor.

[0004] Therefore, the present invention provides an integrated valve seat and a compressor. Summary of the Invention

[0005] Aiming at the problems in the prior art, the purpose of the present invention is to provide an integrated valve seat and a compressor, which overcomes the difficulties of the prior art, can reduce the cost of parts by canceling the slotting of the cylinder head, and the valve plate and the baffle are integrated to reduce the material cost, greatly reducing the overall manufacturing cost of the compressor.

[0006] An embodiment of the present invention provides an integrated valve seat, including:

[0007] A cover plate, one side of the cover plate closes the exhaust port of the cylinder head;

[0008] At least two elastic restraint members, the elastic restraint members are integrally formed with the cover plate, the first end of the elastic restraint member is connected to the cover plate, and the second end is fixed to the cylinder head.

[0009] Preferably, the second end of the elastic restraint member is pressure-welded to the surface of the cylinder head, and the elastic restraint member provides a downward pressure pressing the cover plate towards the exhaust port.

[0010] Preferably, as the air pressure in the compressor cylinder increases, the elastic restraint member lifts in a direction away from the cylinder head, causing the cover plate to be lifted by the air flow in the compressor and leave the exhaust port, and the air flow in the compressor cylinder flows out from the gap between the cover plate and the exhaust port.

[0011] Preferably, when the air pressure in the compressor cylinder weakens, the elastic restraint member provides a restoring force pressing the cover plate towards the exhaust port, causing the cover plate to close the exhaust port of the cylinder head again.

[0012] Preferably, the elastic restraint members are radially arranged around the cover plate and the surface of the cylinder head.

[0013] Preferably, the exhaust port has a circular raised edge, and the cover plate closes the opening of the raised edge.

[0014] Preferably, the elastic restraint member includes a first connecting rib and a second connecting rib;

[0015] The first end of the first connecting rib is connected to the cylinder head, the first end of the second connecting rib is connected to the cover plate, and the second end of the first connecting rib is flexibly connected to the second end of the second connecting rib.

[0016] Preferably, the connection between the first connecting rib and the second connecting rib has an elastic restoring force pointing towards the cylinder head.

[0017] Preferably, a bendable stress dissipation groove is provided at the connection between the second end of the first connecting rib and the second end of the second connecting rib, and the height of the gap between the cover plate and the exhaust port is changed according to the bending state of the stress dissipation groove.

[0018] Preferably, the thickness of the cover plate is greater than or equal to the thickness of the elastic restraint member.

[0019] Preferably, the cover plate and the elastic restraint member are made of the same material and integrally formed.

[0020] Preferably, the thickness of the first connecting rib is greater than or equal to the thickness of the second connecting rib, and the thickness of the first connecting rib is greater than or equal to the thickness of the stress dissipation groove.

[0021] An embodiment of the present invention further provides a compressor, including: the integrated valve seat as described above.

[0022] The integrated valve seat and the compressor of the present invention can cancel the traditional riveting method of grooving the cylinder head. The valve plate baffle is made into one piece, and the valve plate baffle is connected to the cylinder head by resistance welding. Canceling the grooving of the cylinder head reduces the cost of parts. The valve plate and the baffle being integrated reduces the material cost, greatly reducing the overall manufacturing cost of the compressor. Moreover, since the number of openings in the cylinder head is reduced, both the process steps are reduced and the deformation of the cylinder head during machining is prevented, enhancing the sealing effect of the compressor and reducing the vibration during the operation of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Other features, objects, and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings.

[0024] Figure 1 Schematic diagram of the installed valve seat of the prior art.

[0025] Figure 2 Cross-sectional view of the installed valve seat of the prior art.

[0026] Figure 3 Schematic diagram of the installed valve seat of the present invention.

[0027] Figure 4 Cross-sectional view of the installed valve seat of the present invention. And

[0028] Figure 5 Cross-sectional view of the installed valve seat of the present invention in use state.

[0029] REFERENCE NUMERALS

[0030] 1 Cylinder head

[0031] 11 Crankshaft

[0032] 12 Mounting hole

[0033] 13 Exhaust port

[0034] 14 Raised edge

[0035] 2 Valve seat

[0036] 21 Baffle

[0037] 22 Bolt

[0038] 23 Valve plate

[0039] 31 Cover plate

[0040] 32 Elastic restraint

[0041] 321 First connecting rib

[0042] 322 Second connecting rib

[0043] d Gap

[0044] F Lifting direction

[0045] G Airflow direction Detailed implementation manners

[0046] The exemplary implementation manners will now be described more fully with reference to the accompanying drawings. However, the exemplary implementation manners can be implemented in various forms and should not be construed as limited to the implementation manners set forth herein. On the contrary, these implementation manners are provided so that this invention will be thorough and complete, and will fully convey the concept of the exemplary implementation manners to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their repetitive description will be omitted.

[0047] Figure 3 It is a schematic diagram of the valve seat after installation of the present invention. Figure 4 It is a sectional view of the valve seat after installation of the present invention. Figure 5 It is a sectional view of the valve seat in the working state after installation of the present invention. As Figures 3 to 5 shown, the integral valve seat of the present invention includes: a cover plate 31 and at least two elastic restraint members 32. One side of the cover plate 31 closes the exhaust port 13 of the cylinder head 1. The elastic restraint members 32 are integrally formed with the cover plate 31. The first ends of the elastic restraint members 32 are connected to the cover plate 31, and the second ends are fixed to the cylinder head 1.

[0048] In a preferred embodiment, the thickness of the cover plate 31 is greater than or equal to the thickness of the elastic restraint members 32.

[0049] In a preferred embodiment, the cover plate 31 and the elastic restraint members 32 are made of the same material and integrally formed.

[0050] In a preferred embodiment, the second ends of the elastic restraint members 32 are pressure-welded to the surface of the cylinder head 1, and the elastic restraint members 32 provide a downward pressure pressing towards the exhaust port 13 to the cover plate 31.

[0051] In a preferred embodiment, as the air pressure in the compressor cylinder increases, the elastic restraint members 32 lift in the direction away from the cylinder head 1, causing the cover plate 31 to be lifted by the airflow in the compressor and leave the exhaust port 13, and the airflow in the compressor cylinder flows out through the gap d between the cover plate 31 and the exhaust port 13.

[0052] In a preferred embodiment, when the air pressure in the compressor cylinder decreases, the elastic restraint members 32 provide a restoring force pressing towards the exhaust port 13 to the cover plate 31, causing the cover plate 31 to re-close the exhaust port 13 of the cylinder head 1.

[0053] In a preferred embodiment, the elastic restraint members 32 are radially arranged around the cover plate 31 and are in contact with the surface of the cylinder head 1.

[0054] In a preferred embodiment, the exhaust port 13 has an annular raised edge 14, and the cover plate 31 closes the opening of the raised edge 14. A height difference is formed between the raised edge 14 and the cylinder head 1, so that the elastic restraint members 32 apply an oblique tensile force to the cover plate 31, causing the cover plate 31 to be pressed against the exhaust port 13 as much as possible.

[0055] In a preferred embodiment, the elastic restraint members 32 include a first connecting rib 321 and a second connecting rib 322;

[0056] The first end of the first connecting rib 321 is connected to the cylinder head 1, the first end of the second connecting rib 322 is connected to the cover plate 31, and the second end of the first connecting rib 321 is flexibly connected to the second end of the second connecting rib 322.

[0057] In a preferred embodiment, the connection between the first connecting rib 321 and the second connecting rib 322 has an elastic restoring force pointing towards the cylinder head 1.

[0058] In a preferred embodiment, a bendable stress dissipation groove is provided at the connection between the second end of the first connecting rib 321 and the second end of the second connecting rib 322, and the height of the gap d between the cover plate 31 and the exhaust port 13 is changed according to the bending state of the stress dissipation groove.

[0059] In a preferred embodiment, the thickness of the first connecting rib 321 is greater than or equal to the thickness of the second connecting rib 322, and the thickness of the first connecting rib 321 is greater than or equal to the thickness of the stress dissipation groove.

[0060] Reference Figure 4 , when the air pressure of the air flow in the compressor cylinder is weak, the second end of the elastic restraint member 32 is pressure-welded to the surface of the cylinder head 1, and the elastic restraint member 32 provides a downward pressure to the cover plate 31 towards the exhaust port 13. Reference Figure 5 , as the air pressure of the air flow in the compressor cylinder increases, the elastic restraint member 32 lifts in a direction away from the cylinder head 1, causing the cover plate 31 to be lifted by the air flow in the compressor in the lifting direction F away from the cylinder head 1 and leave the exhaust port 13, and the air flow in the compressor cylinder flows out through the gap d between the cover plate 31 and the exhaust port 13 along the air flow direction G. After a part of the air flow in the compressor cylinder flows out of the compressor cylinder through the exhaust port 13, the air pressure in the compressor cylinder weakens, and the elastic restraint member 32 provides a restoring force to the cover plate 31 towards the exhaust port 13, causing the cover plate 31 to re-close the exhaust port 13 of the cylinder head 1 (equivalent to returning to the state of Figure 4 ).

[0061] An embodiment of the present invention further provides a compressor, comprising: the integrated valve seat as described above.

[0062] In summary, the integrated valve seat and the compressor of the present invention can cancel the traditional riveting method of grooving the cylinder head. The valve plate baffle is made into one piece, and the valve plate baffle is connected to the cylinder head by spot welding. Canceling the grooving of the cylinder head reduces the cost of parts. The valve plate and the baffle being integrated reduces the material cost, greatly reducing the overall manufacturing cost of the compressor. Moreover, since the number of openings in the cylinder head is reduced, both the process steps are reduced and the deformation of the cylinder head during machining is prevented, enhancing the sealing effect of the compressor and reducing the vibration during the operation of the compressor.

[0063] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. An integrated valve seat, characterized in that, Comprising: A cover plate (31), one side of the cover plate (31) closes the exhaust port (13) of the cylinder head (1), the exhaust port (13) has a circular raised edge (14) protruding from the surface of the cylinder head (1), and the cover plate (31) closes the opening of the raised edge (14); At least two elastic restraint members (32), the elastic restraint members (32) are integrally formed with the cover plate (31), the first end of the elastic restraint member (32) is connected to the cover plate (31), and the second end is pressure-welded to the surface of the cylinder head (1). The elastic restraint member (32) applies an oblique pulling force to the cover plate (31), so that the cover plate (31) is pressed towards the exhaust port (13). The thickness of the cover plate is greater than or equal to the thickness of the elastic restraint member. The cover plate and the elastic restraint member are made of the same material and integrally formed. The elastic restraint member (32) includes a first connecting rib (321) and a second connecting rib (322); the first end of the first connecting rib (321) is connected to the cylinder head (1), the first end of the second connecting rib (322) is connected to the cover plate (31), the second ends of the first connecting rib (321) and the second connecting rib (322) are flexibly connected, and the connection between the first connecting rib (321) and the second connecting rib (322) has an elastic restoring force pointing towards the cylinder head (1). As the air pressure in the compressor cylinder increases, the elastic restraint member (32) lifts in a direction away from the cylinder head (1), so that the cover plate (31) is lifted by the air flow in the compressor and leaves the exhaust port (13). The air flow in the compressor cylinder flows out from the gap (d) between the cover plate (31) and the exhaust port (13).

2. The integral valve seat according to claim 1, wherein, When the air pressure in the compressor cylinder weakens, the elastic restraint member (32) provides a restoring force pressing the cover plate (31) towards the exhaust port (13), so that the cover plate (31) re-closes the exhaust port (13) of the cylinder head (1).

3. The integrated valve seat according to claim 1, characterized in that, The elastic restraint members (32) are radially arranged on the surface of the cylinder head (1) with the cover plate (31) as the center.

4. A compressor, characterized in that, Comprising: The integral valve seat according to any one of claims 1 to 3.

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