Inclined suction hole valve plate and forming die thereof

Abstract

The inclined suction hole valve plate comprises a valve plate body, a suction hole and an exhaust hole are formed in the valve plate body, the central axis of the suction hole is arranged in an inclined mode, and the included angle beta between the central axis of the suction hole and the plane of the valve plate is smaller than 90 degrees, so that the outlines, located on the two sides of the valve plate, of the suction hole can intersect and be arranged in a staggered mode; according to the utility model, the air suction efficiency is improved, and the position of the air suction silencing cavity, the size of the cylinder hole, the size of the sealing area, the size of the air suction flow channel and the like are more flexibly arranged.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator compressors, in particular to an inclined air suction hole valve plate and a forming die thereof. Background Art

[0002] In fully enclosed small compressors, especially refrigerator compressors, the valve plate is an extremely critical component. The valve plate completes the suction and exhaust of the refrigerant. Due to the limitation of the valve plate material, powder metallurgy is currently the most commonly used. The processing of powder metallurgy is different from conventional casting. The upper and lower molds of powder metallurgy can only be die-casted in a straight up and down manner. This leads to the fact that when the valve plate is conventionally designed, the axis of the suction hole can only be basically perpendicular to the plane of the valve plate, and the contours of the suction holes on both sides of the valve plate can only be overlapped or included, and cannot be intersected or staggered. Such a valve plate has the following technical problems when used: 1. It affects the installation position of the suction muffler cavity, limits the size of the cylinder bore, the size of the sealing area, the size of the suction flow channel, etc.; 2. When the refrigerant gas enters the valve plate suction hole from the suction muffler cavity, there is a nearly vertical corner, and then enters the cylinder. The vertical corner affects the gas flow channel, resulting in unsmooth gas suction, thereby reducing the suction efficiency, and then reducing the refrigeration efficiency of the compressor. Summary of the invention

[0003] The purpose of the utility model is to solve the problems existing in the prior art and to provide a valve plate with an inclined air suction hole and a forming die thereof.

[0004] The specific scheme of the utility model is: a valve plate with inclined air intake holes, including a valve plate body, on which air intake holes and air exhaust holes are arranged, the central axis of the air intake holes is arranged obliquely, and the angle β between the central axis of the air intake holes and the plane of the valve plate is less than 90°, so that the contours of the air intake holes on both sides of the valve plate can intersect and be staggered.

[0005] Furthermore, the β is in the range of 15°-80°.

[0006] Furthermore, the β is in the range of 30°-60°.

[0007] Furthermore, the outline shape of the air suction hole is circular, oval or heart-shaped.

[0008] Furthermore, the utility model also provides a molding mold for producing the above-mentioned inclined air suction hole valve plate, including an upper mold and a lower mold, the upper mold including an upper mold base, a concave cavity A is provided on one side of the upper mold base, a boss A is provided in the cavity A corresponding to the inclined air suction hole, a parting surface is provided on one side of the boss A, and the parting surface is arranged perpendicular to the cavity surface; the lower mold includes a lower mold base, a concave cavity B is provided on one side of the lower mold base relative to the upper mold base, a boss B is provided in the cavity B corresponding to the inclined air suction hole, a parting surface coincident with the boss A is provided on one side of the boss B, and when the upper mold base and the lower mold base are molded together, the boss A and the boss B form the mold core of the inclined air suction hole.

[0009] Compared with the prior art, the utility model has the following advantages: 1. The positions of the air intake holes on the front and back of the valve plate are more flexible, and the position of the air intake silencer cavity, the size of the cylinder hole, the size of the sealing area, the size of the air intake flow channel, etc. are more flexible to adjust, and can better adapt to the market trend of miniaturized compressors; 2. The air intake flow channel has a certain angle with the horizontal plane, and the gas flow channel is more in line with the fluid dynamics design, so that the gas enters the air intake hole of the valve plate from the air intake silencer cavity more smoothly, thereby improving the air intake efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a back view of the valve plate of the utility model;

[0011] Figure 2 It is a front view of the valve plate of the utility model;

[0012] Figure 3 yes Figure 2 AA view;

[0013] Figure 4 It is a three-dimensional view of the upper mold of the molding mold of the utility model;

[0014] Figure 5 It is a three-dimensional view of the lower mold of the molding mold of the utility model;

[0015] Figure 6 It is a cross-sectional view of the upper mold and the lower mold in the mold closing state;

[0016] In the figure: 1. Air intake hole; 2. Air exhaust hole; 3. Upper die base; 4. Cavity A; 5. Boss A; 6. Parting surface; 7. Lower die base; 8. Cavity B; 9. Boss B. DETAILED DESCRIPTION

[0017] See also Figure 1-3 The present embodiment is a valve plate with an inclined air intake hole, comprising a valve plate body, on which an air intake hole 1 and an air exhaust hole 2 are arranged. The central axis of the air intake hole 1 is arranged obliquely, and the angle β between the central axis of the air intake hole 1 and the plane of the valve plate is less than 90°, so that the contours of the air intake hole 1 on both sides of the valve plate can intersect and be staggered.

[0018] Furthermore, the β is in the range of 15°-80°.

[0019] Furthermore, the β is in the range of 30°-60°.

[0020] Furthermore, the outline shape of the air intake hole 1 is circular, oval or heart-shaped.

[0021] The utility model sets the suction hole 1 in an inclined form, so that when the refrigerant gas flowing out of the suction muffler enters the cylinder through the suction hole 1, the entire flow channel is smoother, thereby improving the suction efficiency; at the same time, it can also more flexibly set the position of the suction muffler cavity, the size of the cylinder hole, and the size of the sealing area.

[0022] See also Figure 4-6 The present embodiment further provides a molding mold for manufacturing the above-mentioned inclined air suction hole valve plate, including an upper mold and a lower mold, the upper mold including an upper mold base 3, a concave cavity A4 is provided on one side of the upper mold base 3, a boss A5 is provided in the cavity A4 corresponding to the inclined air suction hole 1, a parting surface 6 is provided on one side of the boss A5, and the parting surface 6 is arranged perpendicular to the cavity surface; the lower mold includes a lower mold base 7, a concave cavity B8 is provided on one side of the lower mold base 7 relative to the upper mold base 3, a boss B9 is provided in the cavity B8 corresponding to the inclined air suction hole 1, a parting surface 6 overlapping with the boss A5 is provided on one side of the boss B9, and when the upper mold base 3 and the lower mold base 7 are molded together, the boss A5 and the boss B9 form the mold core of the inclined air suction hole 1.

[0023] Through the above-mentioned molding die, when powder metallurgy die casting is adopted, since the parting surface 6 of boss A5 and boss B9 is arranged vertically, the straight-up and straight-down die-casting method of the upper and lower dies is satisfied, and the design requirement of the inclined air intake hole 1 is realized from the manufacturing method, so that the air intake hole 1 corresponds to the contour of the front and back of the valve plate, allowing intersection and staggered arrangement.

Claims

1. A valve plate with an oblique air suction hole, comprising a valve plate body, the valve plate body being provided with an air suction hole and an air exhaust hole, wherein: The central axis of the air suction hole is arranged obliquely, and the angle β between the central axis of the air suction hole and the plane of the valve plate is less than 90°.

2. The oblique air suction hole valve plate according to claim 1, characterized in that: The β is in the range of 15°-80°.

3. The oblique air suction hole valve plate according to claim 2, characterized in that: The β is in the range of 30°-60°.

4. The oblique air suction hole valve plate according to claim 1, characterized in that: The outline shape of the air suction hole is circular, oval or heart-shaped.

5. A molding die, characterized in that: A valve plate for producing an inclined air suction hole as described in any one of claims 1 to 4 comprises an upper die and a lower die, wherein the upper die comprises an upper die seat, a concave cavity A is provided on one side of the upper die seat, a boss A is provided in the cavity A corresponding to the inclined air suction hole, a parting surface is provided on one side of the boss A, and the parting surface is arranged perpendicular to the cavity surface; the lower die comprises a lower die seat, a concave cavity B is provided on one side of the lower die seat relative to the upper die seat, a boss B is provided in the cavity B corresponding to the inclined air suction hole, a parting surface coincident with the boss A is provided on one side of the boss B, and when the upper die seat and the lower die seat are molded together, the boss A and the boss B form the mold core of the inclined air suction hole.

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