CN117432846A

CN117432846A - Exhaust valve plate structure and compressor

Info

Publication number: CN117432846A
Application number: CN202311746374.3A
Authority: CN
Inventors: 黄纯浚; 王珺; 孙成龙
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-12-19
Filing date: 2023-12-19
Publication date: 2024-01-23
Anticipated expiration: 2043-12-19
Also published as: CN117432846B

Abstract

The invention provides an exhaust valve block structure and a compressor, wherein the exhaust valve block structure comprises a baffle and a valve block, the baffle is connected with the valve block through a fixing piece, a plurality of grooves are formed in the end face, facing the baffle, of the valve block, and any one end of each groove penetrates through the side wall of the valve block. According to the invention, the defect that the valve plate cannot rebound normally due to the fact that the valve plate is tightly attached to the lower surface of the valve plate baffle under the action of gas force due to the fact that refrigerating oil gas is arranged between the valve plate and the baffle when the compressor is exhausted in the prior art can be overcome.

Description

Exhaust valve plate structure and compressor

Technical Field

The invention belongs to the technical field of compressors, and particularly relates to an exhaust valve plate structure and a compressor.

Background

The rolling rotor compressor consists of two parts, namely a pump body and a motor. The pump body assembly mainly comprises a cylinder, a crankshaft, a roller, a sliding vane and an upper flange and a lower flange, wherein the pump body crankshaft is in interference fit with a motor rotor, the R-shaped end face of the sliding vane is abutted against the outer circle surface of the roller under the action of spring force and back pressure in a shell in a line contact mode, and therefore the internal volume formed by the cylinder and the roller is divided into two crescent-shaped air suction cavities and compression cavities. The working principle is that the crankshaft periodically rotates under the action of the driving force of the motor, and drives the roller to synchronously and eccentrically rotate through the eccentric structure of the crankshaft, so as to drive the sliding vane to radially reciprocate in the sliding vane groove of the air cylinder, so that the volumes of the air suction cavity and the compression cavity are changed along with the reciprocating motion, and the periodical air suction, compression and exhaust processes of the compressor are realized.

In the exhaust process of the compressor, the exhaust valve plate is opened under the action of gas force, compressed gas is discharged while carrying a large amount of frozen oil to be discharged together, part of frozen oil is adhered to the surfaces of the valve plate and the valve plate baffle to form oil drops, and at the moment, the valve plate is tightly attached to the lower surface of the valve plate baffle under the action of gas force due to the viscous action of oil liquid between the valve plate and the valve plate baffle, so that the valve plate is adsorbed on the valve plate baffle. When the exhaust is finished, the valve plate cannot rebound normally, and the condition of delayed closing occurs, so that gas backflow occurs, the normal compressed gas quantity of gas in a subsequent cylinder cavity is influenced, and the energy of the compressor is greatly influenced.

Because in the prior art, when the exhaust of the compressor is finished, due to the fact that the refrigerating oil gas is arranged between the valve plate and the baffle plate, the valve plate can be tightly attached to the lower surface of the valve plate baffle plate due to the action of the gas force, and the valve plate cannot rebound normally, gas flows back, the normal compressed gas quantity of the gas in a subsequent cylinder cavity is influenced, and the like, the invention designs the exhaust valve plate structure and the compressor.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defect that the valve plate cannot rebound normally due to the fact that the valve plate is tightly attached to the lower surface of the valve plate baffle under the action of gas force due to the fact that refrigerating oil gas is arranged between the valve plate and the baffle when the compressor is exhausted in the prior art, so that the exhaust valve plate structure and the compressor are provided.

In order to solve the problems, the invention provides an exhaust valve block structure, which comprises a baffle plate and a valve block, wherein the baffle plate and the valve block are connected through a fixing piece, a plurality of grooves are formed in the end face of the valve block, which faces the baffle plate, and any one end of each groove penetrates through the side wall of the valve block.

In some embodiments, the valve plate has a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall is opposite to the third side wall, the second side wall is opposite to the fourth side wall, two ends of the second side wall are respectively connected with the first side wall and the third side wall, two ends of the fourth side wall are respectively connected with the first side wall and the third side wall, one end of the groove penetrates through the first side wall, and the other end penetrates through the third side wall.

In some embodiments, the length of the valve plate is L along the direction of the second side wall towards the fourth side wall, and the maximum distance between the groove and the fourth side wall is S, which satisfies that S is more than or equal to 1/3L.

In some embodiments, the fixing member is located on the baffle plate near the second side wall relative to the fourth side wall, and when the exhaust valve plate structure is stationary, a part of the valve plate is attached to the baffle plate, another part of the valve plate is detached from the baffle plate, and a part of the valve plate attached to the baffle plate is located on the valve plate near the second side wall relative to the fourth side wall.

In some embodiments, the recess is located in another partial region of the valve plate that is separated from the baffle.

In some embodiments, the minimum distance between two adjacent grooves is C, which satisfies that C.gtoreq.2 mm.

In some embodiments, the depth of the groove is H, and the thickness of the valve plate is H, which satisfies 1/3 H.ltoreq.h.ltoreq.1/2H.

In some embodiments, the end face of the valve plate facing the baffle plate is taken as a projection surface, and the projection of the groove is arc-shaped or linear.

In some embodiments, the connection between the inner side wall of the groove and the bottom surface of the groove is a rounded structure, and the connection between the inner side wall of the groove and the end surface of the valve plate is a rounded structure.

The invention also provides a compressor comprising the exhaust valve plate structure.

The exhaust valve plate structure and the compressor provided by the invention have the following beneficial effects:

through the groove, any end of the groove penetrates through the side wall of the valve plate. When the valve block is impacted and attached to the lower surface of the baffle, redundant refrigerating oil flows out to the side face of the groove along the oil path due to the existence of the groove, so that the refrigerating oil quantity at the exhaust structure is reduced, and the adhesive force generated by oil viscosity is reduced. Meanwhile, after the frozen oil flows out from the side face of the valve block, a fit clearance is formed between the valve block and the baffle plate, so that the adhesive force between the valve block and the baffle plate is reduced, the valve block can rebound in time to close the exhaust port when exhaust is finished, the occurrence of gas backflow is prevented, and the energy level of the compressor is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic view of an exhaust valve plate according to an embodiment of the present invention in a static state;

FIG. 2 is a schematic structural diagram illustrating an operation state of an exhaust valve plate structure according to an embodiment of the present invention;

FIG. 3 is a top view of a valve plate in an exhaust valve plate structure according to an embodiment of the present invention;

FIG. 4 is a side view of a valve plate in an exhaust valve plate structure according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a valve plate in an exhaust valve plate structure according to another embodiment of the present invention.

The reference numerals are expressed as:

1. a fixing member; 2. a baffle; 3. a valve plate; 4. A groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.

Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided an exhaust valve plate structure, which is characterized by comprising a baffle plate 2 and a valve plate 3, wherein the baffle plate 2 and the valve plate 3 are connected by a fixing member 1, an end surface of the valve plate 3 facing the baffle plate 2 is provided with a plurality of grooves 4, and either end of each groove 4 penetrates through a side wall of the valve plate 3. In the technical scheme, when the compressor runs and the cylinder starts to exhaust, the valve plate 3 is opened under the action of gas force, and compressed gas carries a large amount of refrigerating oil to be discharged from the exhaust port. At this time, since the valve plate 3 and the baffle plate 2 are located at the first impact position of the compressed oil gas, the oil gas can adhere to the surfaces of the valve plate 3 and the baffle plate 2 to form a large amount of oil drops, under the condition that the conventional valve plate 3 and the baffle plate 2 are easily affected by the viscosity of the oil, the valve plate 3 cannot rebound in time to close the exhaust port when the exhaust is finished, and when the cylinder roller enters the next compression stage, the gas flows back from the exhaust port to affect the overall energy efficiency level of the compressor. Through the groove 4, either end of the groove 4 penetrates the side wall of the valve plate 3. When the valve plate 3 is impacted and stuck on the lower surface of the baffle plate 2, redundant frozen oil can flow out to the side surface of the groove 4 along the oil path due to the existence of the groove 4, so that the frozen oil quantity at the exhaust structure is reduced, and the adhesive force generated by oil viscosity is reduced. Meanwhile, after the frozen oil flows out from the side face of the valve plate 3, a fit clearance is formed between the valve plate 3 and the baffle plate 2, so that the adhesive force between the valve plate 3 and the baffle plate 2 is reduced, the valve plate 3 can rebound in time to close the exhaust port when exhaust is finished, the occurrence of the condition of gas backflow is prevented, and the energy efficiency level is ensured. The number of the grooves 4 is not less than 3, and the oil drainage effect of the valve plate 3 is ensured. After the frozen oil flows out along the groove 4, part of the frozen oil enters the upper cavity of the motor along with the high-pressure air flow of the exhaust port, and part of the frozen oil flows back to the oil tank along the inner wall or through the waist-shaped holes of the upper flange.

In some embodiments, the valve plate 3 has a first side wall, a second side wall, a third side wall and a fourth side wall, where the first side wall is opposite to the third side wall, the second side wall is opposite to the fourth side wall, two ends of the second side wall are respectively connected with the first side wall and the third side wall, two ends of the fourth side wall are respectively connected with the first side wall and the third side wall, one end of the groove 4 penetrates through the first side wall, and the other end penetrates through the third side wall. In the technical scheme, two ends of the second side wall are respectively connected with the first side wall and the third side wall in a smooth transition mode, two ends of the fourth side wall are respectively connected with the first side wall and the third side wall in a smooth transition mode, and the second side wall and the fourth side wall are arc-shaped.

In some embodiments, referring to FIG. 3 in combination, the length of the valve plate 3 is L, and the maximum distance between the groove 4 and the fourth side wall is S, which satisfies that S is equal to or greater than 1/3L. In the technical scheme, along the direction of the second side wall towards the fourth side wall, the length of the valve plate 3 is L, the maximum distance between the groove 4 and the fourth side wall is S, and the maximum distance is S which is more than or equal to 1/3L, so that the groove 4 oil way is ensured to cover enough dangerous areas, and the rebound effect of the valve plate is ensured.

The related art discloses an exhaust valve block structure, wherein a diversion hole is formed in a valve block, a diversion groove is formed in a baffle plate, when the valve block is opened at the beginning of exhaust, part of compressed gas can flow out from the diversion hole, and the phenomenon that excessive gas between the valve block and a valve seat generates vortex is avoided; and meanwhile, an exhaust passage is increased, so that the exhaust resistance is reduced. However, under the actual running condition of the structure, because the air flow can have downward air force to the valve plate when flowing through the baffle diversion trench, and a large amount of heavy compressed air at the exhaust port can also apply upward air force in the opposite direction to the valve plate, the valve plate can shake and unstable to flap the baffle plate when the two are unbalanced, abnormal noise is generated, and meanwhile, the fatigue life of the valve plate is influenced.

According to the exhaust valve block structure, the groove 4 oil way is formed in the end face, where the valve block 3 is in contact with the baffle plate 2, of the valve block structure, and when exhaust begins, the valve block 3 is tightly attached to the lower surface of the baffle plate 2 under the action of gas force. At this moment, the refrigerating oil carried out by the exhaust between the valve plate 3 and the baffle plate 2 can flow out from the side surface through the oil way of the groove 4 on the upper surface of the valve plate 3, and meanwhile, the contact area between the valve plate 3 and the baffle plate 2 is reduced, so that the condition that the exhaust port cannot be closed by rebounding in time due to the adsorption of the valve plate 3 on the baffle plate 2 caused by the viscosity of the oil is prevented, the gas backflow caused by delayed closing of the valve plate 3 is avoided, and the compressor energy is ensured.

In some embodiments, the fixing member 1 is located on the baffle plate 2 near the second side wall relative to the fourth side wall, and when the exhaust valve plate structure is at rest, a part of the valve plate 3 is attached to the baffle plate 2, another part of the valve plate 3 is separated from the baffle plate 2, and a part of the valve plate 3 attached to the baffle plate 2 is located on the valve plate 3 near the second side wall relative to the fourth side wall.

According to the exhaust valve block structure, the through groove 4 oil way is formed in the upper surface, where the valve block 3 is in contact with the baffle plate 2, in the width direction, when the compressor runs into the compression stage, the exhaust valve block 3 is opened and is tightly attached to the baffle plate 2, at the moment, frozen oil drops between the two can flow out from the side face through the groove 4 oil way on the valve block 3, so that the frozen oil quantity between the valve block 3 and the baffle plate 2 is reduced, the adhesiveness is reduced, the valve block can rebound in time to close the exhaust hole, and the influence of gas backflow on the energy efficiency of the compressor is avoided.

In some embodiments, as shown in fig. 1 and 2, the recess 4 is located in another partial area of the valve plate 3 separated from the baffle plate 2. In this technical scheme, mounting 1 adopts the rivet, and mounting 1 runs through baffle 2 and valve block 3 in proper order after fixing on the cylinder, because be connected through mounting 1 between valve block 3 and the baffle 2 and be fixed to on the flange disk seat, mounting 1 is located valve block 3 tail end, is influenced by valve block 3 rigidity in the place that is close to mounting 1 more, and the resilience force after the bending is stronger more easily resumes to initial form. Therefore, when the exhaust valve plate 3 is bent and stuck on the lower surface of the baffle plate 2 at the position with the minimum rebound force on the exhaust side far away from the tail end of the valve plate 3, the risk that the exhaust port cannot be rebound in time to close is maximum under the influence of the viscosity of oil. Therefore, the other partial area of the valve plate 3 separated from the baffle plate 2 is close to the exhaust port of the compressor, and the groove 4 is positioned in the other partial area of the valve plate 3 separated from the baffle plate 2, so that the drainage effect of the groove 4 is facilitated.

In some embodiments, the minimum distance between two adjacent grooves 4 is C, which satisfies that C.gtoreq.2 mm. In this technical scheme, recess 4 sets up the terminal surface at valve block 3, because valve block 3 self structural strength is low, if recess 4 sets up too closely, can influence valve block 3 structural strength by a wide margin, leads to its operation in-process to fracture easily, consequently, adjacent two minimum distance between the recess 4 is C, and it satisfies, and C is greater than or equal to 2mm to guarantee its operational reliability.

In some embodiments, referring to FIG. 4 in combination, the depth of the groove 4 is H, and the thickness of the valve plate 3 is H, which satisfies 1/3 H.ltoreq.h.ltoreq.1/2H. In the technical scheme, in order to ensure that the depth of the groove 4 is H and the thickness of the valve plate 3 is H on the premise of not affecting the structural strength of the valve plate 3, the thickness of the valve plate 3 is H, which is satisfied, H is 1/3H is less than or equal to 1/2H, and the oil drainage quantity and the oil drainage speed of the groove 4 are improved, according to the exhaust valve plate structure, an oil way of the through groove 4 is formed in the end face of one side of the valve plate 3, which is close to the baffle plate 2, along the width direction. The problem that oil gas adheres to the surfaces of the valve plate 3 and the baffle plate 2 to form oil drops in the exhaust process, the valve plate 3 cannot rebound in time due to oil viscosity, and the compressor energy is affected due to gas backflow can be improved.

In some embodiments, the end face of the valve plate 3 facing the baffle plate 2 is taken as a projection surface, and the projection of the groove 4 is arc-shaped or linear. In this solution, as shown in fig. 5, when the projection of the groove 4 is arc-shaped, the bending direction is directed to the side of the fixing member 1. When the valve plate 3 is opened and tilted, the frozen oil can flow out along the side surface of the valve plate rapidly under the action of gravity, and the oil drainage effect is improved. The invention relates to an exhaust valve plate structure. The problem that the valve plate 3 is clung to the lower surface of the baffle plate 2 due to the viscosity of the frozen oil under the working state of the compressor, and the valve plate 3 cannot rebound in time to close the exhaust port to cause gas backflow when the exhaust is finished, so that the energy efficiency level of the compressor is affected can be solved.

In some embodiments, the connection between the inner side wall of the groove 4 and the bottom surface of the groove 4 is a rounded structure, and the connection between the inner side wall of the groove 4 and the end surface of the valve plate 3 is a rounded structure. In this technical scheme, the inside wall of recess 4 with the junction of valve block 3 towards the terminal surface of baffle 2 is round corner structure, recess 4 inside wall with the junction of recess 4 bottom surface is round corner structure, of course, round corner structure also can adopt other streamlined transition to improve the frozen oil flow smoothness nature, improve the oil drainage effect. The cross-sectional shape of the groove 4 can be selected to be semicircular or other special-shaped structures.

The compressor of the invention is a roller compressor, and the roller rotor compressor mainly comprises a pump body and a motor. The pump body assembly mainly comprises a cylinder, a crankshaft, a roller, a sliding vane and an upper flange and a lower flange, wherein the pump body crankshaft is in interference fit with a motor rotor, the R-shaped end face of the sliding vane is abutted against the outer circle surface of the roller under the action of spring force and back pressure in a shell in a line contact mode, and therefore the internal volume formed by the cylinder and the roller is divided into two crescent-shaped air suction cavities and compression cavities. The working principle is that the crankshaft periodically rotates under the action of the driving force of the motor, and drives the roller to synchronously and eccentrically rotate through the eccentric structure of the crankshaft, so as to drive the sliding vane to radially reciprocate in the sliding vane groove of the air cylinder, so that the volumes of the air suction cavity and the compression cavity are changed along with the reciprocating motion, and the periodical air suction, compression and exhaust processes of the compressor are realized.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.

Claims

1. The utility model provides an exhaust valve block structure, its characterized in that includes baffle (2) and valve block (3), baffle (2) and valve block (3) are connected through mounting (1), valve block (3) orientation the terminal surface of baffle (2) is provided with a plurality of recesses (4), the lateral wall of valve block (3) is run through to any one end of recess (4).

2. The exhaust valve plate structure according to claim 1, wherein the valve plate (3) has a first side wall, a second side wall, a third side wall and a fourth side wall, the first side wall is opposite to the third side wall, the second side wall is opposite to the fourth side wall, both ends of the second side wall are respectively connected with the first side wall and the third side wall, both ends of the fourth side wall are respectively connected with the first side wall and the third side wall, one end of the groove (4) penetrates through the first side wall, and the other end penetrates through the third side wall.

3. The exhaust valve plate structure according to claim 2, characterized in that the length of the valve plate (3) is L in the direction of the second side wall toward the fourth side wall, and the maximum distance between the groove (4) and the fourth side wall is S, which satisfies that S is equal to or greater than 1/3L.

4. The exhaust valve block structure according to claim 2, wherein the fixing member (1) is located on the baffle plate (2) near the second side wall with respect to the fourth side wall, and when the exhaust valve block structure is stationary, a part of the valve block (3) is attached to the baffle plate (2) and another part is detached from the baffle plate (2), and a part of the valve block (3) attached to the baffle plate (2) is located on the valve block (3) near the second side wall with respect to the fourth side wall.

5. The exhaust valve plate structure according to claim 4, characterized in that the recess (4) is located in another partial area of the valve plate (3) separated from the baffle plate (2).

6. The exhaust valve plate structure according to claim 1, characterized in that the minimum distance between two adjacent grooves (4) is C, which is satisfied, C being equal to or greater than 2mm.

7. The exhaust valve plate structure according to claim 1, wherein the depth of the groove (4) is H, and the thickness of the valve plate (3) is H, which satisfies that 1/3H is less than or equal to 1/2H.

8. The exhaust valve plate structure according to claim 1, wherein the end surface of the valve plate (3) facing the baffle plate (2) is taken as a projection surface, and the projection of the groove (4) is arc-shaped or linear.

9. The exhaust valve plate structure according to claim 1, wherein the connection between the inner side wall of the groove (4) and the bottom surface of the groove (4) is a rounded structure, and the connection between the inner side wall of the groove (4) and the end surface of the valve plate (3) is a rounded structure.

10. A compressor comprising the discharge valve plate structure according to any one of claims 1 to 9.