Valve group mounting structure capable of reducing weight of cylinder head and compressor

Abstract

The utility model relates to a valve group installation structure capable of reducing weight of a cylinder head and a compressor, which comprise a cylinder seat and a cylinder cover, the cylinder cover is approximately circular, the outer contour shape of the cylinder head part of the cylinder seat is matched with that of the cylinder cover, a valve group is arranged between the cylinder cover and the end face of the cylinder head, and the appearance of the valve group is matched with that of the cylinder cover. The cylinder cover is provided with a circle of outer sleeve plate, the inner ring of the outer sleeve plate is matched with the outer ring of the cylinder head, the inner end of the outer sleeve plate is provided with a pressing surface, the pressing surface is used for pressing the valve group, one end of the outer sleeve plate is provided with a plurality of buckles, and the outer ring of the cylinder head is provided with clamping grooves matched with the buckles; the cylinder head of the cylinder seat and the cylinder cover are designed to be circular, and screw mounting parts at four corners are omitted, so that the weight of the cylinder head is reduced, the weight difference between the cylinder head and the cylinder tail is reduced, the compressor is more stable in the operation process, and the vibration of the whole machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating piston refrigeration compressors, in particular to a valve group installation structure and a compressor for reducing the weight of a cylinder head. Background Art

[0002] The movement structure of the reciprocating piston compressor is as follows: Figure 7 As shown, it generally includes a cylinder block 2, a crankshaft 1, and a piston. A cylinder head 21 of the cylinder block 2 is equipped with a cylinder cover 3. The piston works in the cylinder to continuously inhale and exhaust air. The exhaust air first enters the cylinder cover, then returns to the exhaust chamber 22 on the cylinder block, and finally is discharged from the compressor through the exhaust pipe. The cylinder block and the cylinder cover of the traditional structure are connected by four screws. The cylinder head of the cylinder block with this connection method is designed to be square in order to reserve the position of the screw holes, resulting in the weight of the cylinder head being much heavier than the weight of the cylinder tail. This causes vibration and noise due to weight imbalance when the compressor is running. Summary of the invention

[0003] The utility model aims to reduce the vibration and noise problems caused by the large weight deviation between the head and the tail of the cylinder seat, and provides a valve group installation structure and a compressor for reducing the weight of the cylinder head.

[0004] The specific scheme of the utility model is: a valve group installation structure for reducing the weight of a cylinder head, comprising a cylinder seat and a cylinder cover, the cylinder head is generally circular in shape, the outer contour of the cylinder head portion of the cylinder seat matches the cylinder head, a valve group is arranged between the cylinder head and the cylinder head end face, the shape of the valve group matches the cylinder head, the cylinder head is provided with a circle of outer sleeve plates, the inner ring of the outer sleeve plates matches the outer ring of the cylinder head, the inner end of the outer sleeve plates is provided with a clamping surface, the clamping surface is used to clamp the valve group, one end of the outer sleeve plates is provided with a plurality of buckles, and the outer ring of the cylinder head is provided with a clamping groove matching the buckles.

[0005] Furthermore, the valve group includes a valve plate, an intake valve plate, and an exhaust valve plate. The shapes of the intake valve plate and the valve plate match the inner ring of the outer sleeve plate of the cylinder head, and the exhaust valve plate is installed on the valve plate.

[0006] Furthermore, a positioning notch is provided at the same position on the outer edges of the valve plate and the intake valve plate, and a positioning protrusion is provided on the inner ring of the outer sleeve plate of the cylinder head corresponding to the positioning notch of the valve plate and the intake valve plate.

[0007] Furthermore, the outer sleeve plate and the outer ring of the cylinder head are fastened by rivets or locks.

[0008] Furthermore, the side wall of the cylinder head is provided with a vent hole, the vent hole is communicated with the exhaust area in the cylinder head, and the exhaust hole of the valve group is communicated with the exhaust area.

[0009] Furthermore, the pressing surface is provided with a circle of sealing ribs.

[0010] The utility model also provides a compressor, comprising a shell, wherein a core is arranged in the shell, and the core adopts the valve group installation structure mentioned above.

[0011] Compared with the prior art, the utility model has the following advantages: by designing the cylinder seat, cylinder head and cylinder cover to be circular, the screw installation parts at the four corners are eliminated, thereby reducing the weight of the cylinder head, reducing the weight difference between the cylinder head and the cylinder tail, making the compressor more stable during operation and reducing the vibration of the whole machine; on the one hand, it also reduces the material cost of the cylinder seat casting and the cylinder head. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of the first embodiment of the utility model;

[0013] Figure 2 yes Figure 1 The main view of

[0014] Figure 3 yes Figure 2 AA view;

[0015] Figure 4 It is a three-dimensional view of the cylinder seat of the utility model;

[0016] Figure 5 It is a three-dimensional schematic diagram of the cylinder head of the utility model;

[0017] Figure 6 It is a three-dimensional schematic diagram of the second embodiment of the utility model;

[0018] Figure 7 It is a three-dimensional schematic diagram of the valve group installation structure in the prior art;

[0019] In the figure: 1, crankshaft; 2, cylinder seat; 21, cylinder head; 22, exhaust chamber; 23, slot; 3, cylinder head; 24, rivet hole; 31, outer sleeve plate; 32, buckle; 33, vent hole; 34, rivet hole; 35, pressing surface; 36, positioning protrusion; 4, lock buckle. DETAILED DESCRIPTION

[0020] Embodiment 1

[0021] See also Figure 1-5The present embodiment provides a valve group installation structure for reducing the weight of a cylinder head 21, comprising a cylinder seat 2 and a cylinder cover 3. The cylinder cover 3 is generally circular in shape. The outer contour of the cylinder head 21 of the cylinder seat 2 matches the cylinder cover 3. A valve group is arranged between the cylinder cover 3 and the end surface of the cylinder head 21. The shape of the valve group matches the cylinder cover 3. The cylinder cover 3 is provided with a circle of outer sleeve plate 31. The inner ring of the outer sleeve plate 31 matches the outer ring of the cylinder head 21. A pressing surface 35 is provided at the inner end of the outer sleeve plate 31. The pressing surface 35 is used to press the valve group. A plurality of buckles 32 are provided at one end of the outer sleeve plate 31. A clamping groove 23 matching the clamping groove 32 is provided at the outer ring of the cylinder head 21. The clamping groove 32 has a certain elasticity. During installation, the cylinder cover 3 is installed on the cylinder seat 2 by pressing. The clamping surface 35 of the cylinder cover 3 presses the valve group by the tension between the clamping groove 23 and the clamping groove 23.

[0022] Furthermore, the valve group includes a valve plate, an intake valve plate, and an exhaust valve plate. The shapes of the intake valve plate and the valve plate match the inner circle of the outer sleeve plate 31 of the cylinder head 3, and the exhaust valve plate is installed on the valve plate.

[0023] Furthermore, a positioning notch is provided at the same position on the outer edges of the valve plate and the intake valve plate, and a positioning protrusion 36 is provided on the inner ring of the outer sleeve plate 31 of the cylinder head 3 corresponding to the positioning notch of the valve plate and the intake valve plate; through the cooperation between the positioning protrusion 36 and the positioning notch, the position of the valve plate and the intake valve plate is fixed by the cylinder head 3, so as to avoid the valve plate or the intake valve plate from rotating and causing misalignment when the compressor is running.

[0024] Furthermore, the buckle 32 is provided with rivet holes 34 in the radial direction, and correspondingly, the outer ring of the cylinder head 21 of the cylinder seat 2 is provided with rivet holes 24, and the cylinder head 3 and the cylinder seat 2 are fastened by riveting, so as to prevent the cylinder head 3 from rotating and misaligning.

[0025] Furthermore, the side wall of the cylinder head 3 is provided with a vent hole 33, which is communicated with the exhaust area in the cylinder head 3, and the exhaust hole of the valve group is communicated with the exhaust area. The utility model provides the vent hole 33 on the cylinder head 3 so that the exhaust of the valve group flows out from the vent hole 33, thereby changing the flow path of the exhaust through the exhaust chamber 22 of the cylinder seat 2 in the prior art, thereby eliminating the exhaust chamber 22, and further reducing the weight of the cylinder head 21.

[0026] Furthermore, the pressing surface 35 is provided with a circle of sealing ribs to improve air tightness. This embodiment also provides a compressor, including a housing, a movement is installed in the housing, and the movement adopts the above-mentioned valve group installation structure.

[0027] Embodiment 2

[0028] See also Figure 6The structure of this embodiment is basically the same as that of the first embodiment, except that the cylinder head 3 and the cylinder seat 2 are fastened by a lock buckle 4, and the lock buckle 4 includes a lock ring, one end of which is open and provided with a locking screw. The lock ring is tightened by the locking screw to bind and fix the cylinder head 3 and the cylinder seat 2.

Claims

1. A valve group installation structure for reducing the weight of a cylinder head, characterized by: It includes a cylinder seat and a cylinder head. The shape of the cylinder head is generally circular. The outer contour of the cylinder head of the cylinder seat matches the cylinder head. A valve group is installed between the cylinder head and the end face of the cylinder head. The shape of the valve group matches the cylinder head. The cylinder head is provided with a circle of outer sleeve plate. The inner ring of the outer sleeve plate matches the outer ring of the cylinder head. The inner end of the outer sleeve plate is provided with a clamping surface, which is used to clamp the valve group. One end of the outer sleeve plate is provided with a plurality of buckles, and the outer ring of the cylinder head is provided with a clamping groove matching the buckle.

2. A valve assembly installation structure for reducing the weight of a cylinder head according to claim 1, characterized in that: The valve group comprises a valve plate, an intake valve plate and an exhaust valve plate. The shapes of the intake valve plate and the valve plate match the inner ring of the outer sleeve plate of the cylinder head, and the exhaust valve plate is installed on the valve plate.

3. A valve assembly installation structure for reducing the weight of a cylinder head according to claim 2, characterized in that: The outer edges of the valve plate and the intake valve plate are provided with positioning notches at the same position, and the inner ring of the outer sleeve plate of the cylinder head is provided with positioning protrusions corresponding to the positioning notches of the valve plate and the intake valve plate.

4. The valve assembly installation structure for reducing the weight of a cylinder head according to claim 1, characterized in that: The outer sleeve plate and the outer ring of the cylinder head are fastened by rivets or locks.

5. The valve assembly installation structure for reducing the weight of a cylinder head according to claim 1, characterized in that: The side wall of the cylinder head is provided with a vent hole, the vent hole is communicated with the exhaust area in the cylinder head, and the exhaust hole of the valve group is communicated with the exhaust area.

6. The valve assembly installation structure for reducing the weight of a cylinder head according to claim 1, characterized in that: The pressing surface is provided with a circle of sealing ribs.

7. A compressor, comprising a housing, wherein a core is housed in the housing, wherein: The movement adopts the valve group installation structure described in any one of claims 1-6.

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