Novel scroll compressor fixed disc

Abstract

The utility model discloses a novel scroll compressor fixed disc, which belongs to the technical field of scroll compressors, and comprises a fixed disc main body and a cover, the fixed disc main body is provided with a boss, and the boss is provided with a groove; a first column body, a second column body and a third column body are arranged in the groove, the side faces of the first column body, the second column body and the third column body are connected with the bottom face of the groove to form an arc part, the upper end faces of the first column body, the second column body and the third column body are connected with the arc part to form a plane part, and a liquid outlet is formed in the plane part of the first column body. The second column body and the third column body are provided with pressure relief openings, an exhaust valve plate is arranged in the groove, an exhaust valve plate is arranged to press the exhaust valve plate, and the exhaust valve plate is arranged to seal the liquid discharge opening and the pressure relief openings; and the machine cover is assembled on the fixed disc main body. According to the scroll compressor, the exhaust flow characteristic can be optimized, the operation efficiency of the compressor is improved, noise and vibration are reduced, the overall performance of the scroll compressor is improved, and the service life of the scroll compressor is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to scroll compressor technical field, concretely relates to a novel scroll compressor fixed disc. BACKGROUND

[0002] Scroll compressor has been widely applied in refrigeration, air conditioning, heat pump and industrial gas compression and other fields because of its high efficiency, low noise and compact structure; but the existing scroll compressor is prone to vortex and fluid separation when gas flow passes through the outlet edge during the exhaust process, which leads to exhaust pressure loss, thereby affecting the exhaust efficiency and energy consumption performance of the compressor. SUMMARY

[0003] The main purpose of the utility model is to solve the above-mentioned technical problems to a certain extent, and a novel scroll compressor fixed disc is provided, which can optimize the exhaust flow characteristics, improve the operating efficiency of the compressor, reduce noise and vibration, and thus improve the overall performance and service life of the scroll compressor.

[0004] The above-mentioned problems solved by the utility model are realized by the following technical schemes:

[0005] A novel scroll compressor fixed disc is provided, which comprises a fixed disc body and a cover, the upper end of the fixed disc body extends upward to provide a boss, the upper surface of the boss is recessed downward to provide a groove, and the lower end of the fixed disc body is provided with a scroll cavity; the inside of the groove is provided with a first column, a second column and a third column, the side surface of each column is connected with the bottom surface of the groove to form a circular arc part, and the upper end surface is connected with the circular arc part to form a flat part, the flat part of the first column is provided with a liquid discharge port connected with the scroll cavity, the flat part of the second column and the third column is provided with a pressure relief port connected with the scroll cavity, the groove is provided with an exhaust valve plate pressing the exhaust valve plate, and the exhaust valve plate seals the liquid discharge port and the pressure relief port; the cover is assembled on the fixed disc body and covers the first column, the second column and the third column.

[0006] In some embodiments, the height of the first column, the second column and the third column is 3mm.

[0007] In some embodiments, the exhaust valve plate is provided with a first extension part extending in the direction of the first column, the second column and the third column, and the end of the first extension part seals the liquid discharge port and the pressure relief port.

[0008] In some embodiments, the exhaust valve plate is provided with a second extension part adhering to the first extension part, and the end of the second extension part is inclined upward.

[0009] In some embodiments, the first extension portion has an area greater than that of the flat portion.

[0010] In some embodiments, the second and third cylinders are respectively arranged on two sides of the first cylinder.

[0011] In some embodiments, the recess is provided with a mounting table, and the end portions of the exhaust valve plate and the exhaust valve sheet are fixed on the mounting table by bolts.

[0012] In some embodiments, the machine cover is provided with a sealing groove around the position of the exhaust port end face, and a sealing member is arranged in the sealing groove.

[0013] The above technical solutions provided by the present application have the following advantages compared with the prior art:

[0014] The side surface of the first cylinder, the second cylinder and the third cylinder respectively abuts against the bottom surface of the recess to form a circular arc portion, and the upper end surface thereof abuts against the circular arc portion to form a flat portion, the circular arc portion makes the first cylinder, the second cylinder and the third cylinder externally present a spherical structure, the gas flow flows along the spherical surface, the exhaust is more uniform and smooth, the stress impact on the fixed disc and the sealing member is reduced, the vibration is reduced, and the service life of the compressor is prolonged.

[0015] The spherical structure can further reduce the turbulence and fluid separation in the exhaust process, reduce the aerodynamic noise generated by the high-speed gas flow, and the stable exhaust process can reduce the high-frequency howling phenomenon, and improve the mute effect of the scroll compressor. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings shown.

[0017] Fig. 1 is a structural diagram of the scroll compressor fixed disc of the present application;

[0018] Fig. 2 is a structural diagram of the scroll compressor fixed disc of the present application;

[0019] Fig. 3 is a structural diagram of the fixed disc main body of the present application.

[0020] EXPLANATION OF DRAWINGS:

[0021] 1 base body; 2 cover; 3 boss; 4 scroll cavity; 5 first cylinder; 6 second cylinder; 7 third cylinder; 8 arc part; 9 flat part; 10 liquid discharge port; 11 pressure relief port; 12 exhaust valve piece; 13 exhaust valve plate; 14 mounting table; 15 bolt; 16 first extension; 17 second extension; 18 sealing groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0024] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0025] As Figs. 1-3As shown in the utility model provides a kind of novel scroll compressor fixed disc, including fixed disc main body 1 and machine cover 2, the upper end of fixed disc main body 1 is provided with boss 3 extending upwards, the upper surface of boss 3 is provided with recess downwardly recessed, the lower end of fixed disc main body 1 is provided with scroll cavity 4;Recess inside is equipped with first cylinder 5, second cylinder 6 and third cylinder 7, wherein second cylinder 6 and third cylinder 7 are respectively arranged at the two sides of first cylinder 5, the height of first cylinder 5, second cylinder 6 and third cylinder 7 is 3mm, the side surface of first cylinder 5, second cylinder 6 and third cylinder 7 is respectively connected with the bottom surface of recess to form arc part 8, and its upper end surface is connected with arc part 8 to form plane part 9, the plane part 9 of first cylinder 5 is provided with liquid discharge port 10 in communication with scroll cavity 4, the plane part 9 of second cylinder 6 and third cylinder 7 is provided with pressure relief port 11 in communication with scroll cavity 4, exhaust valve piece 12 is provided in recess, exhaust valve plate 13 is provided for pressing exhaust valve piece 12, exhaust valve piece 12 seals liquid discharge port 10 and pressure relief port 11;Machine cover 2 is assembled on fixed disc main body 1 and covers first cylinder 5, second cylinder 6 and third cylinder 7.

[0026] In the embodiment, the side surface of first cylinder 5, second cylinder 6 and third cylinder 7 is respectively connected with the bottom surface of recess to form arc part 8, and its upper end surface is connected with arc part 8 to form plane part 9, the arc part 8 is formed to make the outside of first cylinder 5, second cylinder 6 and third cylinder 7 spherical structure, make airflow flow along the spherical surface, can make exhaust more uniform and smooth, because exhaust is more uniform, reduce the stress impact of fixed disc and sealing element, reduce vibration, prolong the service life of compressor.

[0027] Further spherical smooth structure reduces the impact and vortex of high-speed airflow, reduces airflow turbulent noise, and makes exhaust diffusion more uniform, so that high-speed airflow injection will not produce howling phenomenon due to unstable airflow, improves the mute effect of scroll compressor.

[0028] In the embodiment, mounting table 14 is provided in recess, the end of exhaust valve piece 12 and exhaust valve plate 13 is fixed on mounting table 14 by setting bolt 15, the other end of exhaust valve piece 12 extends in the direction of first cylinder 5, second cylinder 6 and third cylinder 7 and is provided with first extension 16, and the end of first extension 16 seals liquid discharge port 10 and pressure relief port 11 respectively, the area of first extension 16 sealing liquid discharge port 10 and pressure relief port 11 is greater than the area of plane part 9, the spherical structure of first cylinder 5, second cylinder 6 and third cylinder 7 reduces the concentrated injection of airflow, makes exhaust process more stable, reduces exhaust impact force, at the same time reduces the periodic vibration generated in the compressor due to exhaust impact, can effectively improve the long-term stability of compressor, prolong the service life of equipment.

[0029] Further, the exhaust valve plate 13 is provided with a second extension part 17 at the first extension part 16, and the end of the second extension part 17 is upwardly inclined, when the first extension part 16 is loosened by the action of the liquid discharge port 10 and the pressure relief port 11, the first extension part 16 is blocked by the second extension part 17, thereby limiting the effect of the first extension part 16.

[0030] In another embodiment, the cover 2 is provided with a sealing groove 18 around the position of the exhaust port end face, and a sealing element is arranged in the sealing groove 18, the sealing groove 18 is in a cylindrical structure, the inner diameter is 21.2mm, and the outer diameter is 24.8mm. By designing the sealing groove 18 at the exhaust port position of the end cover and increasing the end face sealing structure, the end face sealing structure can effectively withstand high exhaust pressure and maintain stable sealing effect when the pressure fluctuates, avoiding the problem of increasing instantaneous leakage, improving the stability of system operation, reducing the problem of insufficient sealing caused by only using radial sealing, enhancing the durability of sealing, reducing the failure caused by aging, thereby reducing the leakage amount, and improving the working efficiency of the compressor.

[0031] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation, direct / indirect application in other related technical fields under the inventive concept of the utility model, and the contents of the utility model specification and drawings are included in the patent protection range of the utility model.

Claims

1. A new scroll compressor fixed plate, characterized by, The tray body is provided with a boss at the upper end thereof, and the upper surface of the boss is concave and provided with a groove, and the lower end of the tray body is provided with a scroll cavity; The first, second and third columns are respectively provided with a first, second and third columnar portion, and the upper end of the first columnar portion is provided with a liquid discharge port, and the upper end of the second and third columnar portions is provided with a pressure relief port, and the groove is provided with an exhaust valve plate, and the exhaust valve plate is provided with an exhaust valve plate, and the exhaust valve plate is provided with an exhaust valve plate; The cover is assembled on the tray body and covers the first, second and third columns.

2. The new scroll compressor fixed scroll of claim 1, wherein The height of the first, second and third columns is 3mm.

3. The new scroll compressor fixed scroll of claim 1, wherein The exhaust valve plate is provided with a first extension portion extending towards the first, second and third columns, and the end of the first extension portion is provided with a second extension portion.

4. The new scroll compressor fixed scroll of claim 3, wherein The second extension portion is provided with a second extension portion, and the end of the second extension portion is inclined upward.

5. The new scroll compressor fixed scroll of claim 3, wherein The area of the first extension portion sealing the liquid discharge port and the pressure relief port is greater than the area of the flat portion.

6. The new scroll compressor fixed scroll of claim 1, wherein The second and third columns are respectively provided on both sides of the first column.

7. The new scroll compressor fixed scroll of claim 1, wherein The groove is provided with a mounting table, and the end of the exhaust valve plate and the exhaust valve plate is fixed on the mounting table by the bolt.

8. The new scroll compressor fixed scroll of claim 1, wherein The cover is provided with a sealing groove around the position of the exhaust port end surface, and a sealing member is provided in the sealing groove.

Images