CN217602875U - Valve plate gasket, valve group and compressor - Google Patents

Abstract

The utility model discloses a valve plate gasket, a valve group and a compressor, wherein the valve plate gasket comprises a central plate and a plurality of positioning plates, and the central plate is provided with a piston hole; a plurality of spacers are connected in the outside of center piece and along the circumference interval arrangement of center piece, and the spacer is equipped with the connecting hole, is equipped with the breach between two adjacent spacers, and the open end orientation of breach deviates from one side in piston hole. The utility model discloses a reduce the holistic seal area of valve plate gasket, reduce the area of contact between valve plate gasket and suction valve block, the crankcase promptly to under the certain circumstances of pressure, can increase the sealing pressure between valve plate gasket and the suction valve block, between valve plate gasket and the crankcase, the sealed effect of reinforcing improves the sealing performance of valve plate gasket, reduces the probability that the refrigerant leaked, and then improves the sealing performance of valves, improves the volumetric efficiency of compressor, improves refrigeration plant's efficiency.

Description

Valve plate gasket, valve group and compressor

Technical Field

The utility model relates to an electrical equipment technical field, in particular to valve plate gasket, valves and compressor.

Background

The compressor is a core component of refrigeration equipment such as a refrigerator, and the performance of the compressor is an important means for improving the energy efficiency of the refrigeration equipment and reducing the power consumption of the refrigeration equipment, and the performance of the compressor is closely related to the volumetric efficiency of the compressor. The valve plate gasket is used as a sealing part in the air suction process of the compressor, and in the related technology, the area of the valve plate gasket is large, the sealing pressure during sealing is small, the sealing performance is poor, the refrigerant leakage in the compression process is serious, the volumetric efficiency of the compressor is influenced, and the energy efficiency of refrigeration equipment is further influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a valve plate gasket that sealing performance is good.

The utility model discloses still provide a valves and the compressor that has above-mentioned valves of having above-mentioned valve plate gasket.

According to the utility model discloses a valve plate gasket of first aspect embodiment, including the center piece, be equipped with the piston hole; the positioning pieces are connected to the outer side of the central piece and arranged along the circumferential interval of the central piece, the positioning pieces are provided with connecting holes, two adjacent positioning pieces are provided with gaps, and the opening ends of the gaps face away from one side of the piston hole.

According to the utility model discloses valve plate gasket of first aspect embodiment has following beneficial effect at least: through set up the breach between two adjacent spacers, and the open end orientation of breach deviates from one side in piston hole, there is not extra connection structure between two adjacent spacers, can reduce the holistic sealed area of valve plate gasket, reduce valve plate gasket and suction valve block promptly, area of contact between the crankcase, thereby under the certain circumstances of pressure, can increase between valve plate gasket and the suction valve block, the sealing pressure between valve plate gasket and the crankcase, strengthen sealed effect, improve the sealing performance of valve plate gasket, reduce the probability that the refrigerant leaked, and then improve the sealing performance of valves, improve the volumetric efficiency of compressor, improve refrigeration plant's efficiency.

According to the utility model discloses a some embodiments, the minimum distance of the edge of piston hole with the outer fringe of center plate is L1, satisfies: l1 is more than or equal to 2.5mm and less than or equal to 5mm.

According to some embodiments of the invention, the central piece and/or the spacer is provided with a hollow hole, the hollow hole being located between the piston hole and the connection hole.

According to some embodiments of the present invention, the minimum distance between the edge of the piston hole and the edge of the hollow hole is L2, which satisfies: l2 is more than or equal to 2.5mm and less than or equal to 5mm.

According to some embodiments of the utility model, the valve plate gasket still includes the connection piece, the connection piece with center piece and one of them the spacer is connected, the connection piece is equipped with the exhaust hole.

According to the utility model discloses a some embodiments, the edge in exhaust hole with the minimum distance of the outer fringe of connection piece is L3, the edge in exhaust hole with the minimum distance of the edge in piston hole is L4, the edge in exhaust hole with the minimum distance of the edge of connecting hole is L5, satisfies: l3 is more than or equal to 2.5mm and less than or equal to 5mm, L4 is more than or equal to 2.5mm and less than or equal to 5mm, and L5 is more than or equal to 2.5mm and less than or equal to 5mm.

According to some embodiments of the invention, the distance between the center of the plurality of connecting holes and the center of the piston hole is equal.

According to the utility model discloses a some embodiments, the edge of connecting hole with the minimum distance of the outer fringe of spacer is L6, satisfies: l6 is more than or equal to 2.5mm and less than or equal to 5mm.

According to the utility model discloses the valves of second aspect embodiment, including suction valve piece and crankcase to and the valve plate gasket of above-mentioned first aspect embodiment, the valve plate gasket is located the suction valve piece with between the crankcase.

According to the utility model discloses the valves of second aspect embodiment has following beneficial effect at least: by adopting the valve plate gasket of the embodiment of the first aspect, the valve group can reduce the whole sealing area of the valve plate gasket, namely the contact area between the valve plate gasket and the suction valve plate as well as between the valve plate gasket and the crankcase, so that under the condition of certain pressure, the sealing pressure between the valve plate gasket and the suction valve plate and between the valve plate gasket and the crankcase can be increased, the sealing effect is enhanced, the sealing performance of the valve plate gasket is improved, the probability of leakage of a refrigerant is reduced, the sealing performance of the valve group is further improved, the volume efficiency of the compressor is improved, and the energy efficiency of refrigeration equipment is improved.

According to the third aspect embodiment of the present invention, the compressor comprises the valve set of the second aspect embodiment.

According to the utility model discloses compressor of third aspect embodiment has following beneficial effect at least: the compressor adopts the valve group of the embodiment of the second aspect, and the contact area between the valve plate gasket and the suction valve plate and between the valve plate gasket and the crankcase is reduced by reducing the whole sealing area of the valve plate gasket, so that under the condition of certain pressure, the sealing pressure between the valve plate gasket and the suction valve plate and between the valve plate gasket and the crankcase can be increased, the sealing effect is enhanced, the sealing performance of the valve plate gasket is improved, the probability of refrigerant leakage is reduced, the sealing performance of the valve group is further improved, the volumetric efficiency of the compressor is improved, and the energy efficiency of refrigeration equipment is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention will be further described with reference to the following drawings and examples, in which:

FIG. 1 is a schematic structural view of a valve plate gasket according to a first embodiment of the present invention;

FIG. 2 is a schematic structural view of a valve plate gasket according to a second embodiment of the present invention;

FIG. 3 is a schematic structural view of a valve plate gasket according to a third embodiment of the present invention;

FIG. 4 is a schematic structural view of a valve plate gasket according to a fourth embodiment of the present invention;

fig. 5 is an exploded view of the valve assembly according to the embodiment of the present invention.

Reference numerals:

a central panel 100; a piston bore 110; a first edge 120; a second edge 130;

a positioning plate 200; a connection hole 210; a notch 220; an extension piece 230; a hollowed-out hole 240; a third edge 250; a sixth edge 260; a seventh edge 270;

a connecting sheet 300; an exhaust hole 310; a fourth edge 320; a fifth edge 330;

an intake valve plate 400;

a crankcase 500; a piston chamber 510; a fixing hole 520; a first end face 530; and an exhaust passage 540.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise clear and definite limitations, words such as setting, installing, connecting, assembling, matching, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention by combining the specific contents of the technical solutions.

The compressor is a core component of refrigeration equipment such as a refrigerator, and the performance of the refrigeration equipment is closely related to the performance of the compressor. Along with the improvement of living standard of people, the energy consumption requirement of people on refrigeration equipment such as a refrigerator is higher and higher, and the improvement of the performance of a compressor is an important means for improving the energy efficiency of the refrigeration equipment and reducing the power consumption of the refrigeration equipment, wherein the improvement of the energy efficiency of the refrigeration equipment is realized by using less energy input to provide the same refrigerating capacity.

In the correlation technique, the sealing area of valve plate gasket is reduced only through the hollow out construction that sets up with piston hole interval ground to some valve plate gaskets, in order to obtain great sealing pressure, but hollow out construction is closed-loop structure, be the body structure of hollow out construction all around the valve plate gasket promptly, it is limited that it can reduce sealing area, under certain pressure, sealing pressure when valve plate gasket seals is still less, sealing performance is poor, lead to the refrigerant leakage serious among the compression process easily, thereby influence the volumetric efficiency of compressor, and then influence the efficiency of refrigeration plant such as refrigerator, the power consumption is high, product competitiveness descends.

In order to solve the above problem, an embodiment of the present invention provides a valve plate gasket for a compressor, especially a reciprocating compressor. A valve plate gasket according to an embodiment of the first aspect of the present invention will be described with reference to fig. 1 to 5.

Referring to fig. 2, it can be understood that the valve plate gasket includes a central plate 100 and a plurality of positioning plates 200, and specifically, the valve plate gasket includes one central plate 100 and four positioning plates 200, a piston hole 110 is provided in a middle position of the central plate 100, the central plate 100 has a ring structure, one side of the central plate 100, which is defined to be close to the piston hole 110, is an inner side of the central plate 100, an opposite side is an outer side of the central plate 100, the four positioning plates 200 are all connected to the outer side of the central plate 100, and the four positioning plates 200 are arranged at intervals along a circumferential direction of the central plate 100, a connecting hole 210 is provided in a middle position of each positioning plate 200 for a screw to pass through to position and fix the valve plate gasket, and in general, a diameter of the piston hole 110 is larger than a diameter of the connecting hole 210. The spacers 200 also have a ring-like structure, and one end of the spacer 200 near the central piece 100 is connected to the central piece 100 directly or through the extension piece 230. It will be readily appreciated that the central plate 100 and the four splines 200 are of unitary construction.

Of course, the number of positioning pieces 200 is not limited to four, and five or six positioning pieces may be provided, for example, according to the positioning and fixing requirements of the valve plate gasket.

Referring to fig. 2 and 5, it can be understood that when the valve plate gasket is applied to a compressor, the valve plate gasket is installed between the suction valve plate 400 and the crankcase 500, and a valve plate structure (not shown) is further disposed on a side of the suction valve plate 400 away from the valve plate gasket, wherein the piston hole 110 is disposed corresponding to the piston cavity 510 of the crankcase 500, the four connecting holes 210 are respectively disposed corresponding to the four fixing holes 520 of the crankcase 500, and the valve plate gasket can be positioned and fixed by passing through the valve plate structure, the suction valve plate 400, and the connecting holes 210 of the valve plate gasket in sequence through screws (not shown) and connecting to the fixing holes 520 of the crankcase 500, so that the suction valve plate gasket 400 and the crankcase 500 are respectively pressed against two sides of the valve plate gasket to achieve sealing.

Referring to fig. 2 and 5, it can be understood that an end surface of the crankcase 500 facing the valve plate gasket is defined as a first end surface 530, and an end surface of the suction valve sheet 400 facing the valve plate gasket is defined as a second end surface (not shown), and in general, the first end surface 530 and the second end surface are rectangular. The valve plate gasket formed by connecting the central piece 100 with the annular structure and the positioning pieces 200 with the four annular structures is characterized in that a notch 220 is arranged between two adjacent positioning pieces 200, and the opening end of the notch 220 faces to one side deviating from the piston hole 110, namely, the opening end faces to the outer side of the central piece 100, relative to a first end face 530 of the crankcase 500 and a second end face of the suction valve plate 400, so that two adjacent positioning pieces 200 are connected only through the central piece 100, other connecting structures do not exist between two adjacent positioning pieces 200, generally speaking, the area of the range corresponding to the notch 220 is larger than the area of the range corresponding to the positioning piece 200, and therefore the areas of two side faces of the valve plate gasket in the thickness direction are reduced.

It can be easily understood that, when the valve plate gasket is installed between the suction valve plate 400 and the crankcase 500, at the notch 220, the valve plate gasket is not in contact with the first end surface 530 of the crankcase 500 and the second end surface of the suction valve plate 400, so as to reduce the contact area between the valve plate gasket and the crankcase 500 and between the valve plate gasket and the suction valve plate 400, i.e., reduce the sealing area of the valve plate gasket as a whole. Under the condition that the locking force of the screws is certain, namely under the condition that the pressure of the crankcase 500 to the valve plate gasket and the pressure of the air suction valve plate 400 to the valve plate gasket are certain, because the contact area is reduced, the sealing pressure between the valve plate gasket and the crankcase 500 and between the valve plate gasket and the air suction valve plate 400 is increased, particularly in the central plate 100, the situation that the sealing pressure at a certain position is too small does not exist from the inner edge to the outer edge of the central plate 100, so that the probability that a refrigerant penetrates through the sealing surface between the central plate 100 and the crankcase 500 and the sealing surface between the central plate 100 and the air suction valve plate 400 can be reduced, the sealing effect is enhanced, the sealing performance of the valve plate gasket is improved, the probability of refrigerant leakage in the compression process of the compressor is effectively reduced, the sealing performance of the valve group is further improved, the volumetric efficiency of the compressor is improved, the energy efficiency of refrigeration equipment (such as a refrigerator and the like) is improved, the power consumption is reduced, and the product competitiveness is improved.

Referring to fig. 2, it can be understood that the edge defining the piston hole 110 is a first edge 120, the first edge 120 is annular, the edge (i.e., the outer edge) of the outer side of the central plate 100 of the annular structure is a second edge 130, the second edge 130 is composed of four arc lines arranged at intervals, the first edge 120 and the second edge 130 are arranged at intervals along the radial direction of the central plate 100, and the first edge 120 and the second edge 130 have a minimum distance L1, which satisfies: 2.5mm ≦ L1 ≦ 5mm, for example, L1=2.5mm, L1=3.0mm, L1=3.5mm, L1=4.0mm, L1=4.5mm, or L1=5.0mm, or the like.

Referring to fig. 2, it can be understood that, due to the relatively large pressure in the piston chamber 510 during the compression process of the compressor, i.e., the relatively large pressure at the first edge 120 and the relatively constant pressure at the second edge 130, a pressure difference exists between the first edge 120 and the second edge 130. L1 is set to be greater than or equal to 2.5mm, so that the width of the sealing surface (i.e., the contact surface) between the central plate 100 and the crankcase 500 along the radial direction of the central plate 100 is sufficient, thereby preventing the refrigerant from penetrating through the sealing surface and leaking to the outer side of the central plate 100 due to the pressure difference between the first edge 120 and the second edge 130, and ensuring the sealing effect between the central plate 100 and the crankcase 500.

Referring to fig. 2, it can be understood that L1 is set to be less than or equal to 5mm, so that the contact area between the central plate 100 and the crankcase 500 and the contact area between the central plate 100 and the suction valve plate 400 are not too large on the premise of ensuring that the refrigerant does not penetrate through the sealing surface to leak, thereby ensuring sufficient sealing pressure, having good sealing effect, and effectively reducing the probability of refrigerant leakage.

Referring to fig. 3, it can be understood that the center plate 100 or the spacer 200 is provided with the hollowed-out hole 240, i.e., the valve plate gasket is provided with the piston hole 110, the connection hole 210, the notch 220, and the hollowed-out hole 240. Specifically, the central plate 100 and the positioning plate 200 are connected by an extending plate 230, wherein the extending plate 230 may be a portion of the positioning plate 200 extending to the central plate 100, or a portion of the central plate 100 extending to the positioning plate 200, the hollow hole 240 is disposed on the extending plate 230, that is, the hollow hole 240 is located between the piston hole 110 and the connecting hole 210, and the hollow hole 240 may be a hole with other shapes, such as a round hole, a square hole, and the like. The four positioning pieces 200 are respectively connected with the central piece 100 through the extending pieces 230, the four extending pieces 230 are all provided with hollow holes 240, and through the arrangement of the hollow holes 240, when the valve plate gasket is installed between the suction valve plate 400 and the crankcase 500, the valve plate gasket is not in contact with the first end surface 530 of the crankcase 500 and the second end surface of the suction valve plate 400 at the hollow holes 240, so that the contact areas of the valve plate gasket and the crankcase 500 and the valve plate gasket and the suction valve plate 400 are further reduced, namely the whole sealing area of the valve plate gasket is reduced, the sealing pressure is further increased, the sealing effect is enhanced, and the probability of refrigerant leakage is reduced. Of course, the hollow holes 240 may be disposed at the connection positions of the central plate 100 and the positioning plates 200, that is, the hollow holes 240 are disposed on the central plate 100 and the positioning plates 200.

Referring to fig. 3, it can be understood that the edge defining the hollow hole 240 is a third edge 250, the third edge 250 is annular, the third edge 250 is spaced apart from the first edge 120 in the radial direction of the central sheet 100, and the third edge 250 has a minimum distance L2 from the first edge 120. Specifically, the length of the connection line between the end point of the third edge 250 closest to the first edge 120 and the end point of the first edge 120 closest to the third edge 250 is L2, and satisfies: 2.5mm ≦ L2 ≦ 5mm, for example, L2=2.5mm, L2=3.0mm, L2=3.5mm, L2=4.0mm, L2=4.5mm, or L2=5.0mm, or the like.

Referring to fig. 3, it can be understood that, similarly, during the compression process of the compressor, the pressure at the third edge 250 is substantially unchanged, a pressure difference exists between the third edge 250 and the first edge 120, and L2 is set to be greater than or equal to 2.5mm, so that the width of the sealing surface between the central plate 100 and the crankcase 500 and between the suction valve plate 400 along the radial direction of the central plate 100 is sufficient, the refrigerant is prevented from leaking to the hollow hole 240 due to the penetration of the sealing surface by the pressure difference between the third edge 250 and the first edge 120, the sealing effect between the central plate 100 and the crankcase 500 and between the central plate 100 and the suction valve plate 400 is ensured, and the probability of refrigerant leakage is reduced. The L2 is set to be less than or equal to 5mm, so that the contact area between the central plate 100 and the crankcase 500 and the contact area between the central plate 100 and the suction valve plate 400 are not too large, thereby ensuring enough sealing pressure, having good sealing effect and effectively reducing the probability of refrigerant leakage.

Referring to fig. 1, it can be understood that the valve plate gasket further includes a connecting piece 300, and the connecting piece 300 is connected to the central piece 100 and one of the positioning pieces 200, specifically, one of two adjacent sides of the connecting piece 300 coincides with a portion of the second edge 130 of the central piece 100, and the other coincides with a portion of the outer edge of one of the positioning pieces 200. It will be readily appreciated that the coupling plate 300, the central plate 100 and the four locating plates 200 are of unitary construction. The connecting plate 300 is provided with a vent hole 310, and the vent hole 310 is arranged at a distance from the piston hole 110 and the screw hole, that is, the valve plate gasket is provided with the piston hole 110, the connecting hole 210, the notch 220, the hollow hole 240 and the vent hole 310. When the valve plate gasket is mounted on the suction valve plate 400 and the crank case 500, the discharge hole 310 is disposed to correspond to the discharge passage 540 of the crank case 500 to discharge the high-pressure refrigerant.

Referring to fig. 1, it can be understood that one side of the connection piece 300, which is defined to be adjacent to the exhaust hole 310, is an inner side of the connection piece 300, and the opposite side is an outer side of the connection piece 300. The edge defining the air discharge hole 310 is a fourth edge 320, the outer edge of the connecting piece 300 is a fifth edge 330, and the edge of the connecting hole 210 is a sixth edge 260.

Referring to fig. 1, it can be understood that the fourth edge 320 is spaced apart from the fifth edge 330 by a minimum distance L3, satisfying: 2.5mm ≦ L3 ≦ 5mm, for example, L3=2.5mm, L3=3.0mm, L3=3.5mm, L3=4.0mm, L3=4.5mm, L3=5.0mm, or the like. In the process of discharging the refrigerant by the compressor, the pressure at the fourth edge 320 is increased, the pressure at the fifth edge 330 is basically unchanged, a pressure difference exists between the fourth edge 320 and the fifth edge 330, and L3 is set to be more than or equal to 2.5mm, so that the width of the sealing surface between the connecting piece 300 and the crankcase 500 and between the connecting piece 300 and the suction valve plate 400 along the radial direction of the connecting piece 300 is sufficient, and the refrigerant is prevented from penetrating through the sealing surface and leaking to the outer side of the connecting piece 300 due to the pressure difference between the fourth edge 320 and the fifth edge 330, thereby enhancing the sealing effect of the valve plate gasket and reducing the probability of refrigerant leakage. The L3 is set to be less than or equal to 5mm, so that the contact area between the connecting piece 300 and the crankcase 500 and the contact area between the connecting piece 300 and the suction valve plate 400 are not too large, thereby ensuring enough sealing pressure, having good sealing effect and effectively reducing the probability of refrigerant leakage.

Referring to fig. 1, it can be appreciated that the fourth edge 320 is spaced from the first edge 120 and has a minimum distance L4, such that: 2.5 mm. Ltoreq.L 4. Ltoreq.5 mm, for example, L4=2.5mm, L4=3.0mm, L4=3.5mm, L4=4.0mm, L4=4.5mm, L4=5.0mm or the like. In the working process of the compressor, pressure difference exists between the piston cavity 510 and the exhaust passage 540, namely, pressure difference exists between the fourth edge 320 and the first edge 120, the set L4 is more than or equal to 2.5mm, and leakage of refrigerant penetrating through sealing surfaces between the central piece 100 and the crank case 500 and between the central piece 100 and the suction valve piece 400 due to pressure difference exists between the fourth edge 320 and the first edge 120 can be avoided between the piston cavity 510 and the exhaust passage 540, so that the sealing effect of the valve plate gasket is enhanced, and the probability of refrigerant leakage is reduced. The L3 is set to be less than or equal to 5mm, so that the contact area between the valve plate gasket and the crankcase 500 and the contact area between the valve plate gasket and the suction valve plate 400 are not too large, sufficient sealing pressure is guaranteed, the sealing effect is good, and the probability of refrigerant leakage is effectively reduced.

Referring to fig. 1, it can be appreciated that the fourth edge 320 is spaced apart from the sixth edge 260 and has a minimum distance L5, satisfying: 2.5mm ≦ L5 ≦ 5mm, for example L5=2.5mm, L5=3.0mm, L5=3.5mm, L5=4.0mm, L5=4.5mm, or L5=5.0mm, and the like. In the process of discharging the refrigerant by the compressor, the pressure at the fourth edge 320 is increased, the pressure at the sixth edge 260 is basically unchanged, a pressure difference exists between the fourth edge 320 and the sixth edge 260, and the L5 is set to be greater than or equal to 2.5mm, so that the refrigerant can be prevented from penetrating through the sealing surfaces between the connecting sheet 300 and the crankcase 500 and between the connecting sheet 300 and the suction valve sheet 400 and leaking to the fixing hole 520 between the exhaust passage 540 and the fixing hole 520 due to the pressure difference between the fourth edge 320 and the sixth edge 260, the sealing effect of the connecting sheet 300 can be enhanced, and the probability of refrigerant leakage can be reduced. The L5 is set to be less than or equal to 5mm, so that the contact area between the connecting piece 300 and the crankcase 500 and the contact area between the connecting piece 300 and the suction valve plate 400 are not too large, sufficient sealing pressure is guaranteed, the sealing effect is good, and the probability of refrigerant leakage is effectively reduced.

Referring to fig. 4, it can be understood that the valve plate gasket may be provided with only the piston holes 110, the connection holes 210, the indentations 220, and the discharge holes 310, without the hollowed-out holes 240. The specific arrangement of the piston hole 110, the connection hole 210, the gap 220 and the exhaust hole 310 can refer to the description of the above embodiments, and the description thereof is omitted here. Similarly, the valve plate gasket of the structure can reduce the contact area, increase the sealing pressure, enhance the sealing effect, improve the sealing performance of the valve plate gasket, effectively reduce the probability of refrigerant leakage in the compression process of the compressor, further improve the sealing performance of the valve bank, improve the volumetric efficiency of the compressor, improve the energy efficiency of refrigeration equipment (such as a refrigerator and the like), reduce the power consumption and improve the product competitiveness.

Referring to fig. 1 to 4, it can be understood that the centers of the four connection holes 210 are equidistant from the center of the piston hole 110, and the four connection holes 210 are uniformly distributed along the circumferential direction of the piston hole 110, in one aspect, the four connection holes 210 correspond to the four fixing holes 520 of the crankcase 500, and the four connection holes 210 are regularly distributed for easy processing; on the other hand, the valve plate gasket is positioned and fixed by the bolts penetrating through the connecting holes 210, the arrangement of the relative positions of the four bolts is the same as that of the connecting holes 210, the arrangement of the bolts is limited by the connecting holes 210 and the fixing holes 520, the overall pre-tightening force of the four bolts on the valve plate gasket is uniformly distributed, and the sealing pressure at each position of the valve plate gasket is effectively ensured to meet the sealing requirement.

Referring to fig. 1 to 4, it can be understood that, in the positioning plate 200, one side of the positioning plate 200 adjacent to the connecting hole 210 is defined as an inner side of the positioning plate 200, the opposite side is defined as an outer side of the positioning plate 200, an outer side edge of the positioning plate 200 is defined as a seventh edge 270, and the sixth edge 260 is spaced apart from the seventh edge 270 and has a minimum distance L6, which satisfies: 2.5mm ≦ L6 ≦ 5mm, for example, L6=2.5mm, L6=3.0mm, L6=3.5mm, L6=4.0mm, L6=4.5mm, L6=5.0mm, or the like. The L6 is set to be more than or equal to 2.5mm, and the width of the positioning sheet 200 in the radial direction can be ensured to be enough, so that the structural strength of the positioning sheet 200 is increased, namely, the integral structural strength of the valve plate gasket is increased, and the valve plate gasket is firmly and stably installed. The L6 is set to be less than or equal to 5mm, so that the contact area between the positioning piece 200 and the crankcase 500 and the contact area between the positioning piece 200 and the suction valve plate 400 are not too large, namely the contact area between the whole valve plate gasket and the crankcase 500 and the contact area between the whole valve plate gasket and the suction valve plate 400 are not too large, and therefore sufficient sealing pressure is guaranteed, the sealing effect is good, and the probability of refrigerant leakage is effectively reduced.

Referring to fig. 5, the valve assembly according to the embodiment of the second aspect of the present invention includes a suction valve plate 400, a crankcase 500 and a valve plate gasket of any one of the above embodiments, wherein the valve plate gasket is installed between the crankcase 500 and the suction valve plate 400.

The valve block has all the beneficial effects of the valve plate gasket of the embodiment due to the valve plate gasket of any one embodiment, and the description is omitted here.

According to the utility model discloses the compressor of third aspect embodiment, including the valves of the above-mentioned second aspect embodiment.

The compressor is applied to refrigeration equipment such as refrigerator, refrigerator-freezer, and the compressor has the whole beneficial effect of the valves of above-mentioned embodiment owing to adopt the valves of above-mentioned embodiment, and the repeated description is omitted here.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. Valve plate gasket, its characterized in that includes:

a central piece provided with a piston hole;

the positioning pieces are connected to the outer side of the central piece and arranged along the circumferential interval of the central piece, the positioning pieces are provided with connecting holes, two adjacent positioning pieces are provided with gaps, and the opening ends of the gaps face away from one side of the piston hole.

2. A valve plate shim as defined in claim 1, wherein: the minimum distance between the edge of the piston hole and the outer edge of the central piece is L1, and the following requirements are met: l1 is more than or equal to 2.5mm and less than or equal to 5mm.

3. A valve plate gasket according to claim 1 or 2, characterized in that: the central piece and/or the positioning piece are/is provided with hollow holes, and the hollow holes are located between the piston holes and the connecting holes.

4. A valve plate shim as defined in claim 3, wherein: the minimum distance between the edge of the piston hole and the edge of the hollow hole is L2, and the minimum distance satisfies the following conditions: l2 is more than or equal to 2.5mm and less than or equal to 5mm.

5. A valve plate gasket according to claim 1 or 2, wherein: the valve plate gasket further comprises a connecting sheet, the connecting sheet is connected with the central sheet and one of the positioning sheets, and the connecting sheet is provided with an exhaust hole.

6. The valve plate gasket as set forth in claim 5, wherein: the edge in exhaust hole with the minimum distance of the outer fringe of connection piece is L3, the edge in exhaust hole with the minimum distance of the edge in piston hole is L4, the edge in exhaust hole with the minimum distance of the edge of connecting hole is L5, satisfies: l3 is more than or equal to 2.5mm and less than or equal to 5mm, L4 is more than or equal to 2.5mm and less than or equal to 5mm, and L5 is more than or equal to 2.5mm and less than or equal to 5mm.

7. A valve plate gasket as set forth in claim 1, wherein: the centers of the plurality of connecting holes are equidistant from the center of the piston bore.

8. The valve plate gasket as set forth in claim 1 or 7, wherein: the minimum distance between the edge of the connecting hole and the outer edge of the positioning plate is L6, and the following requirements are met: l6 is more than or equal to 2.5mm and less than or equal to 5mm.

9. Valve unit, its characterized in that: comprising a suction valve plate and a crankcase, and a valve plate gasket according to any one of claims 1 to 8, said valve plate gasket being arranged between said suction valve plate and said crankcase.

10. A compressor, characterized by: comprising a valve group according to claim 9.

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