Compressor pump body structure and compressor

Abstract

The invention provides a compressor pump body structure and a compressor. The pump body structure comprises a flange, an air cylinder and an exhaust part. A cavity is formed in the air cylinder, and an exhaust channel is formed in the flange. The flange is arranged on the cylinder; the exhaust channel is communicated with the cavity; a convex block is arranged on the exhaust part; the exhaust part is arranged on the flange and can at least partially fill the exhaust channel with the protruding block. According to the scheme provided by the invention, the lug is designed on the exhaust part of the compressor pump body structure to fill the clearance volume formed by the exhaust channel, so that high-pressure gas is prevented from remaining in the clearance, the suction efficiency of the pump body is greatly improved, and the energy efficiency of the compressor is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of compressors, and in particular relates to a compressor pump body structure and a compressor. Background Art

[0002] In existing compressors, the valve seat for pump body exhaust has strength requirements, which makes the valve seat design have a certain thickness. Since the compressor exhaust channel is designed on the valve seat, a gap will be formed in the exhaust channel of the valve seat. The exhaust valve plate used in the existing compressor design just forms a gap volume with the exhaust channel, so that high-pressure gas will remain in the gap. When the compressor rotor passes the exhaust angle, the high-pressure gas in the gap expands again and returns to the intake cavity, resulting in low air intake efficiency at the intake port and reduced energy efficiency of the compressor.

[0003] Since the compressors in the prior art have technical problems such as low air intake efficiency and reduced energy efficiency, the present invention studies and designs a compressor pump body structure and a compressor. Summary of the invention

[0004] Therefore, the present invention provides a compressor pump body structure and a compressor, which can solve the technical problem of low energy efficiency of compressors in the prior art.

[0005] In order to solve the above problems, the present invention provides a compressor pump body structure, wherein:

[0006] The pump body structure includes: a flange, a cylinder and an exhaust member; a cavity is provided in the cylinder, and an exhaust channel is provided on the flange; the flange is arranged on the cylinder, and the exhaust channel is connected to the cavity; a protrusion is provided on the exhaust member; the exhaust member is arranged on the flange, and the protrusion can be at least partially filled in the exhaust channel.

[0007] In some embodiments, the material of the protrusion is different from the material of the exhaust member, and the density of the material of the protrusion is lower than the density of the material of the exhaust member.

[0008] In some embodiments, the exhaust member is made of stainless steel or copper.

[0009] In some embodiments, the material of the bump is polytetrafluoroethylene.

[0010] In some embodiments, the exhaust member is an exhaust valve plate; the protrusion is arranged at one end of the exhaust valve plate, and the other end of the exhaust valve plate is fixedly arranged on the flange.

[0011] In some embodiments, a mounting hole is provided at one end of the exhaust valve sheet; a protrusion is provided in the mounting hole, and at least one end of the protrusion protrudes from the surface of the exhaust valve sheet.

[0012] In some embodiments, the exhaust channel is a circular channel, the bump is a columnar structure, and an annular mounting groove is provided on the outer peripheral surface of the column of the bump; the bump is installed on the exhaust valve plate by fitting the annular mounting groove with the edge of the mounting hole.

[0013] In some embodiments, the material of the bump is polytetrafluoroethylene, and the bump is riveted into the mounting hole by thermoplastic molding; the volume of the portion of the bump facing the exhaust channel is greater than the volume of the portion of the bump facing away from the exhaust channel.

[0014] In some embodiments, one end of the exhaust valve plate is a sealing end, and a protrusion is arranged at the sealing end; the other end of the exhaust valve plate is a connecting end, and an anti-fool structure is arranged at the connecting end; the flange includes a valve seat, and the connecting end of the exhaust valve plate is fixed on the valve seat.

[0015] In some embodiments, the flange includes a valve seat, and the exhaust channel is arranged on the valve seat; a convex ring is provided on the valve seat at the outer side of the exhaust port of the exhaust channel; and one end of the convex block provided on the exhaust member can abut against the convex ring.

[0016] In some embodiments, the bump is loosely matched with the exhaust passage; the outer diameter of the bump is 88% to 92% of the inner diameter of the exhaust passage.

[0017] In some embodiments, the bump is loosely matched with the exhaust passage; the volume of the bump accounts for 55% to 92% of the volume of the exhaust passage.

[0018] The present invention also provides a compressor, which includes the compressor pump body structure mentioned above.

[0019] In some embodiments, the compressor is a rotary compressor.

[0020] The compressor pump body structure and the compressor provided by the present invention have the following beneficial effects:

[0021] The solution provided by the present invention designs a protrusion on the exhaust part of the compressor pump body structure to fill the clearance volume formed by the exhaust channel, thereby avoiding high-pressure gas from remaining in the clearance, thereby greatly increasing the pump body suction efficiency and improving the compressor energy efficiency.

[0022] In the solution provided by the present invention, the boss of the exhaust component is made of polytetrafluoroethylene material, which has the characteristics of high strength, light material, and resistance to high and low temperatures. It is particularly suitable for the working environment of the compressor, can effectively reduce the noise generated by the exhaust component hitting the baffle, effectively reduce the inertia of the exhaust component head, and solve the problem of delayed closing of the exhaust component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0024] Figure 1 This is a top view of a compressor pump body structure of the present application.

[0025] Figure 2 This is a cross-sectional view of a compressor pump body structure of the present application Figure 1 .

[0026] Figure 3 This is a cross-sectional view of a compressor pump body structure of the present application Figure 2 .

[0027] Figure 4 It is a partial cross-sectional view of a compressor pump body structure of the present application.

[0028] Figure 5 This application Figure 4 A magnified schematic diagram of local A.

[0029] Figure 6 It is a three-dimensional diagram of the exhaust valve plate structure of the present application.

[0030] Figure 7 It is a top view of the exhaust valve plate structure of the present application.

[0031] Figure 8 It is a three-dimensional diagram of the block of the present application.

[0032] Fig. 9 It is a front view of the block of this application.

[0033] Fig.10 It is a top view of the block of the present application.

[0034] In the figure: 1, upper flange; 11, valve seat; 12, convex ring; 2, cylinder; 21, cavity; 3, lower flange; 4, limiter; 5, exhaust valve plate; 51, sealing end; 52, mounting hole; 53, connecting end; 54, positioning hole; 55, missing edge; 6, rivet; 7, bump; 71, first cylinder; 72, second cylinder; 73, annular mounting groove; 8, rivet hole; 9, exhaust channel; 91, exhaust port. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0037] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0038] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0039] Combination Figure 1-4As shown, according to an embodiment of the present invention, a compressor pump body structure is provided, and the pump body structure includes: a flange, a cylinder 2, and an exhaust member; wherein a cavity 21 is provided in the cylinder 2, and the cavity 21 can be an air intake cavity or a compression cavity; an exhaust channel 9 is provided on the flange, and the exhaust channel 9 is connected with the cavity 21 to realize the exhaust function. Specifically, the flange is fixedly arranged on the cylinder 2 so that the exhaust channel 9 is connected with the cavity 21. Further, a protrusion 7 is provided on the exhaust member; specifically, the exhaust member is arranged on the flange, and the exhaust member can at least partially fill the protrusion 7 in the exhaust channel 9, that is, when the cylinder inhales air, the exhaust member can at least partially fill the protrusion 7 in the exhaust channel 9 to form a filling; further, when the cylinder exhausts air, the exhaust member can extend the protrusion 7 out of the exhaust channel 9 to realize exhaust. Specifically, the bump 7 on the exhaust component is arranged at the exhaust port of the exhaust channel 9, and can fill the exhaust channel 9 during the air intake process, thereby reducing the clearance volume of the exhaust channel 9 and preventing high-pressure gas from remaining in the clearance of the exhaust channel 9, thereby reducing the clearance expansion of the pump body when working, thereby improving the air intake efficiency and performance.

[0040] The present invention designs a bump on the exhaust part of the pump body structure, and uses the volume of the bump itself to fill the gap formed by the exhaust channel, which can effectively reduce the gap volume of the pump body exhaust port and greatly increase the pump body suction efficiency and compressor performance.

[0041] refer to Figure 3 to Figure 4 , Figures 7 to 9 As shown, in some embodiments, the material of the bump 7 is different from that of the exhaust member, and the density of the material of the bump 7 is less than that of the material of the exhaust member; the material of the bump 7 is preferably polytetrafluoroethylene, and the material of the exhaust member is stainless steel or copper; preferably, the exhaust member is a stainless steel exhaust valve plate 5. The bump made of polytetrafluoroethylene has the advantages of high strength, good toughness and light weight, so that the exhaust structure of the bump 7 and the exhaust valve plate 5 assembly can effectively reduce the noise generated by the valve plate hitting the baffle, can effectively reduce the inertia of the exhaust valve plate head, solve the problem of exhaust valve plate closing delay, and the bump made of polytetrafluoroethylene has the advantages of heat resistance of 327°C and cold resistance of -260°, which is particularly suitable for the working environment of the compressor pump body.

[0042] refer to Figures 2 to 7 As shown, in some embodiments, the exhaust member is designed as an exhaust valve plate 5, and the flange is an upper flange 1; the protrusion 7 is arranged at one end of the exhaust valve plate 5, and the other end of the exhaust valve plate 5 is fixedly arranged on the upper flange 1. Further, the cavity 21 is an air suction cavity or a compression cavity.

[0043] refer to Figures 4 to 7As shown, in some embodiments, the exhaust valve plate 5 is made of stainless steel, and the protrusion 7 is made of polytetrafluoroethylene. Further, a mounting hole 52 is provided at one end of the exhaust valve plate 5, and the protrusion 7 is arranged in the mounting hole 52 and elastically moves with one end of the exhaust valve plate 5; specifically, the protrusion 7 is arranged in the mounting hole 52, and at least one end of the protrusion 7 protrudes from the surface of the exhaust valve plate 5, so that the gap of the exhaust channel can be effectively filled, and the bottom of the exhaust valve plate 5 faces the exhaust channel.

[0044] refer to Figures 6 to 10 As shown, in some embodiments, the protrusion 7 is a columnar structure, and the outer peripheral surface of the column of the protrusion 7 is provided with an annular mounting groove 73; further, the protrusion 7 is riveted to the edge of the mounting hole 52 through the annular mounting groove 73 and is embedded and installed on the exhaust valve plate 5. Specifically, the material of the protrusion 7 is polytetrafluoroethylene, and the protrusion 7 is riveted in the mounting hole 52 of the exhaust valve plate 5 by thermoplastic molding. In this way, the installation is more secure, not easy to loosen, and has a better sealing effect. Furthermore, the volume of the part of the protrusion 7 facing the exhaust channel 9 is greater than the volume of the part of the protrusion 7 away from the exhaust channel 9, so that it can.

[0045] refer to Figures 2 to 7 As shown, in some embodiments, one end of the exhaust valve disc 5 is a sealing end 51, and the protrusion 7 is arranged at the sealing end 51; the other end of the exhaust valve disc 5 is a connecting end 53, and the connecting end 53 is formed with a missing edge 55, which is used to distinguish the installation direction of the exhaust valve disc 5, and the side of the missing edge 55 is positive on the side of the upper flange journal. The connecting end 53 is provided with a positioning hole 54; the connecting end 53 is fixed to the rivet hole 8 of the valve seat 11 of the upper flange 1 by the rivet 6 passing through the positioning hole 54.

[0046] refer to Figures 3 to 5 As shown, in some embodiments, the flange includes a valve seat 11, and the exhaust channel 9 is disposed on the valve seat 11. Further, a convex ring 12 is provided on the valve seat 11 at the outer side of the exhaust port 91 of the exhaust channel 9; specifically: a convex ring 12 is provided on the upper surface of the valve seat 11, and the convex ring 12 is provided on the circumference of the outer side of the exhaust port 91, so that one end of the exhaust valve plate 5 provided with the protrusion 7 can abut against the convex ring 12, so that it can fit tightly on the exhaust port 91 to form an effective seal. Specifically, in the suction stage of the compressor, the exhaust valve plate 5 can abut tightly against the convex ring 12 through its sealing end, and the protrusion 7 can at least partially fill the exhaust channel 9, thereby forming a good sealing and filling effect.

[0047] refer to Figures 8 to 10As shown, in some embodiments, the exhaust channel 9 is a circular channel, the protrusion 7 is a cylindrical structure, and the upper part of the protrusion 7 is provided with a first cylinder 71, which is the part away from the exhaust channel 9; the lower part of the protrusion 7 is provided with a second cylinder 72, which is the part facing the exhaust channel 9; the first cylinder 71 effectively reduces the inertia of the valve head and solves the problem of delayed valve closing. The volume is smaller than the volume of the second cylinder 72, which can; specifically, the annular mounting groove 73 is arranged on one side of the second cylinder 72 of the protrusion 7, and the second cylinder 72 is facing the exhaust channel side, which can effectively fill the gap in the exhaust channel and reduce the gap volume, thereby reducing the gap expansion when the pump body is working, thereby improving the suction efficiency and performance.

[0048] refer to Figures 2 to 4 As shown, in some embodiments, the bump 7 is a cylindrical structure, and the exhaust channel 9 is a circular channel; the bump 7 and the exhaust channel 9 are clearance-matched; further, the diameter of the bump 7 is designed to be 5.5mm-6.5mm, preferably 6mm; the diameter of the exhaust channel 9 is designed to be 6.5mm-7.5mm, preferably 7mm; further, the height of the bump 7 is designed to be 1.2mm-1.6mm, preferably 1.4mm; the depth of the exhaust channel 9 is designed to be 1.5mm-1.9mm, preferably 1.7mm. Specifically, the outer diameter of the bump 7 accounts for 88% to 92% of the inner diameter of the exhaust channel 9. Specifically, the outer diameter of the bump 7 preferably accounts for 89% or 90% of the inner diameter of the exhaust channel 9, so that the exhaust channel 9 can be filled to the greatest extent, avoiding the bump from being clamped in the exhaust channel 9, and forming a good exhaust function.

[0049] refer to Figures 2 to 4 As shown, in some embodiments, the bump 7 is a cylindrical structure, and the exhaust channel 9 is a circular channel; the bump 7 and the exhaust channel 9 are in clearance fit; specifically, the volume of the bump 7 accounts for 55% to 92% of the volume of the exhaust channel 9, and specifically, the volume of the bump 7 preferably accounts for 60%, 66%, and 88% of the volume of the exhaust channel 9, which can also fill the exhaust channel 9 to the greatest extent, reduce the clearance volume, and maintain the exhaust function. Further, the volume of the exhaust channel 9 is 65.10mm 3 -65.60mm 3 , preferably 65.42mm 3 The volume of the bump 7 is preferably 39.58 mm 3 .

[0050] The performance test data of the compressor pump body structure proposed in the present application are compared with the existing data in Table 1. It can be seen from Table 1 that the compressor performance is improved by 0.9% by adopting the exhaust valve plate designed in the present application, and the cooling capacity is significantly increased, especially under low-frequency conditions, the cooling capacity is increased by 3.15%; it also shows that the expansion of the clearance of the exhaust channel during low-frequency operation will seriously reduce the suction efficiency of the compressor, which has a great impact on the energy efficiency of the compressor.

[0051] Table 1

[0052]

[0053] refer to Figures 1 to 7 As shown, in some embodiments, the pump body structure further includes a stopper 4, and the stopper 4 is preferably a stainless steel sheet. One end of the stopper 4 is fixedly connected to the connecting end 53 of the exhaust valve plate 5 by a rivet 6 to achieve common positioning and efficient assembly; the other end of the stopper 4 is arranged at the top of one end of the exhaust valve plate 5 to limit the stroke of one end of the exhaust valve plate 5. Further, the flange includes an upper flange 1 and a lower flange 3, and the cylinder 2 is arranged between the upper flange 1 and the lower flange 3. Further, the upper flange 1 includes a valve seat 11, and the thickness of the valve seat 11 (i.e., the depth of the exhaust channel) is designed to have a certain amount of thickness to achieve strength requirements. Further, one end of the stopper 4 and the exhaust valve plate 5 are riveted together on the rivet hole 8 of the valve seat 11 by a rivet 6; one end of the exhaust valve plate 5 provided with a protrusion 7 is located at the exhaust port of the exhaust channel 9, which acts as a one-way valve. When the compressor is working, the compressed air in the cylinder pushes open the protrusion 7 due to the high pressure, and the exhaust valve plate 5 is deformed to open the exhaust port to achieve exhaust. Due to the restriction of the limiter 4, the lift of the exhaust valve plate 5 remains unchanged; when the exhaust is completed, the protrusion 7 of the exhaust valve plate 5 rebounds to the exhaust channel 9 of the valve seat 11 to close the exhaust port.

[0054] The present invention also provides a compressor, which includes the aforementioned compressor pump body structure; the aforementioned compressor pump body structure can effectively improve the suction efficiency and performance of the compressor pump body.

[0055] In some embodiments, the compressor proposed in the present application is preferably a rotary compressor.

[0056] The solution provided by the present invention designs a protrusion on the exhaust part of the compressor pump body structure to fill the clearance volume formed by the exhaust channel, thereby avoiding high-pressure gas from remaining in the clearance, thereby greatly increasing the pump body suction efficiency and improving the compressor energy efficiency.

[0057] In the solution provided by the present invention, the boss of the exhaust component is made of polytetrafluoroethylene material, which has the characteristics of high strength, light material, and resistance to high and low temperatures. It is particularly suitable for the working environment of the compressor, can effectively reduce the noise generated by the exhaust component hitting the baffle, effectively reduce the inertia of the exhaust component head, and solve the problem of delayed closing of the exhaust component.

[0058] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A compressor pump body structure, characterized in that: The pump body structure comprises: a flange, a cylinder (2) and an exhaust member; a cavity (21) is provided in the cylinder (2), and an exhaust passage (9) is provided on the flange; the flange is arranged on the cylinder (2), and the exhaust passage (9) is connected to the cavity (21); a protrusion (7) is provided on the exhaust member; the exhaust member is arranged on the flange, and is capable of at least partially filling the protrusion (7) in the exhaust passage (9).

2. The compressor pump body structure according to claim 1, characterized in that: The material of the protrusion (7) is different from the material of the exhaust component, and the density of the material of the protrusion (7) is lower than the density of the material of the exhaust component.

3. The compressor pump body structure according to claim 1, characterized in that: The material of the protrusion (7) is polytetrafluoroethylene; and / or the material of the exhaust component is stainless steel or copper.

4. The compressor pump body structure according to claim 1, characterized in that: The exhaust component is an exhaust valve plate (5); the protrusion (7) is arranged at one end of the exhaust valve plate (5), and the other end of the exhaust valve plate (5) is fixedly arranged on the flange (1).

5. The compressor pump body structure according to claim 4, characterized in that: One end of the exhaust valve plate (5) is provided with a mounting hole (52); the protrusion (7) is arranged in the mounting hole (52), and at least one end of the protrusion (7) protrudes from the surface of the exhaust valve plate (5).

6. The compressor pump body structure according to claim 5, characterized in that: The protrusion (7) is a columnar structure, and an annular mounting groove (73) is provided on the outer peripheral surface of the column of the protrusion (7); the protrusion (7) is mounted on the exhaust valve plate (5) by engaging the annular mounting groove (73) with the edge of the mounting hole (52).

7. The compressor pump body structure according to claim 6, characterized in that: The material of the protrusion (7) is polytetrafluoroethylene, and the protrusion (7) is riveted in the mounting hole (52) by thermoplastic molding; the volume of the portion of the protrusion (7) facing the exhaust channel (9) is greater than the volume of the portion of the protrusion (7) facing away from the exhaust channel (9).

8. The compressor pump body structure according to claim 4, characterized in that: One end of the exhaust valve plate (5) is a sealing end (51), and the protrusion (7) is arranged on the sealing end (51); the other end of the exhaust valve plate (5) is a connecting end (53), and the connecting end (53) is provided with an anti-fool structure; the flange includes a valve seat (11), and the connecting end (53) is fixed on the valve seat (11).

9. The compressor pump body structure according to claim 1, characterized in that: The flange comprises a valve seat (11), and the exhaust channel (9) is arranged on the valve seat (11); a convex ring (12) is provided on the valve seat (11) at the outer side of the exhaust port (91) of the exhaust channel (9); and one end of the convex block (7) provided on the exhaust member can abut against the convex ring (12).

10. The compressor pump body structure according to claim 1, characterized in that: The protrusion (7) is clearance-matched with the exhaust passage (9); the outer diameter of the protrusion (7) accounts for 88% to 92% of the inner diameter of the exhaust passage (9).

11. The compressor pump body structure according to claim 1, characterized in that: The convex block (7) is loosely matched with the exhaust channel (9); the volume of the convex block (7) accounts for 55% to 92% of the volume of the exhaust channel (9).

12. A compressor, characterized in that: The compressor comprises the compressor pump body structure according to any one of claims 1 to 11 above.

13. The compressor according to claim 12, characterized in that The compressor is a rotary compressor.

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