CN216812166U

CN216812166U - Intermediate plate and birotor compressor

Info

Publication number: CN216812166U
Application number: CN202220264372.5U
Authority: CN
Inventors: 匡勇军; 操冲; 周忆; 应哲强
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-06-24
Anticipated expiration: 2032-02-09

Abstract

The utility model relates to the technical field of compressors, in particular to a middle plate and a dual-rotor compressor, wherein the middle plate is provided with a hollow silencing cavity, the middle plate is provided with an air inlet hole and a through hole which are communicated with the silencing cavity, and the dual-rotor compressor comprises: the upper plate is covered on the lower plate, and the upper plate and the lower plate are arranged in an enclosing manner to form the silencing cavity; and the sealing ring is arranged between the upper plate and the lower plate and used for sealing the silencing cavity. The utility model can prevent the gas channeling between the refrigerant gas in the middle plate and the gas in the compressor shell, thereby improving the performance of the compressor.

Description

Intermediate plate and birotor compressor

Technical Field

The utility model relates to the technical field of compressors, in particular to a middle plate and a dual-rotor compressor.

Background

With the development of the rotor type compressor to large specification and frequency conversion, the double-rotor compressor becomes a preferred choice for a commercial air conditioning system due to the characteristics of good balance, large displacement and the like. However, with the continuous rising of the discharge capacity, the original double-cylinder double-exhaust structure is faced with the problems of large exhaust resistance, large performance reduction amplitude with the rising of the discharge capacity and the like. Therefore, the double-cylinder four-exhaust structure becomes one of the optimal solutions to the problem. The double-cylinder four-exhaust structure comprises an original upper cylinder cover exhaust, a lower cylinder cover exhaust and an intermediate plate for providing two paths of exhaust. In the prior art, the problem of gas channeling between refrigerant gas in a cavity of an intermediate plate and gas in a shell of a compressor exists.

Therefore, a middle plate and a dual-rotor compressor are required to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an intermediate plate and a dual-rotor compressor, which can prevent refrigerant gas in the intermediate plate and gas in a compressor shell from channeling, thereby improving the performance of the compressor.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an intermediate plate, intermediate plate have hollow amortization chamber, set up on the intermediate plate with inlet port and through-flow hole of amortization chamber intercommunication, the intermediate plate includes:

the upper plate is covered on the lower plate, and the upper plate and the lower plate are surrounded to form the silencing cavity;

and the sealing ring is arranged between the upper plate and the lower plate and used for sealing the silencing cavity.

Furthermore, an annular groove is formed in the edge of the middle plate along the circumferential direction of the middle plate, the annular groove is located between the upper plate and the lower plate, and the sealing ring is arranged in the annular groove.

Furthermore, one side of the sealing ring, which faces the middle plate, is provided with a U-shaped ring groove.

Furthermore, an annular positioning groove is formed in the lower plate along the circumferential direction of the lower plate, the sealing ring is embedded in the annular positioning groove, the upper end of the sealing ring protrudes out of the lower plate, and the protruding part of the sealing ring is clamped between the upper plate and the lower plate.

Further, the cross section of the sealing ring is T-shaped.

Furthermore, an annular convex groove is formed in the edge of the middle plate along the circumferential direction of the middle plate, the convex groove is located between the upper plate and the lower plate, and the sealing ring is arranged in the convex groove.

Further, the sound attenuation cavity is annular or multi-petal-shaped.

Furthermore, a pressure valve is arranged on the middle plate, and an exhaust port of the pressure valve is communicated with the air inlet hole.

The double-rotor compressor comprises an upper cylinder, a lower cylinder and the middle plate, wherein the upper cylinder and the lower cylinder are positioned on two sides of the middle plate, and an exhaust port of the upper cylinder and an exhaust port of the lower cylinder are communicated with the air inlet hole.

Further, the lower plate and the upper plate both comprise a central portion and an outward-extending portion, the outward-extending portion extends outwards along the radial direction around the central portion, the maximum outer diameter of the outward-extending portion is between the outer diameters of the upper cylinder and the lower cylinder and the inner diameter of the shell of the compressor, the central portion of the upper plate and the upper cylinder cover are used for sealing the upper cylinder to form an upper compression closed cavity, the central portion of the lower plate and the lower cylinder cover are used for sealing the lower cylinder to form a lower compression closed cavity, a groove is formed in the outward-extending portion of at least one of the upper plate or the lower plate, and the outward-extending portion of the upper plate and the outward-extending portion groove of the lower plate are spliced with adjacent plates to form the sound attenuation cavity.

The utility model has the beneficial effects that:

the middle plate is provided with the silencing cavity, gas enters the silencing cavity through the gas inlet hole and then is discharged through the through hole, the middle plate is composed of the upper plate and the lower plate, and the sealing ring is arranged between the upper plate and the lower plate and used for sealing the silencing cavity, so that gas channeling between refrigerant gas in the middle plate and gas in the compressor shell is prevented, and the performance of the compressor is improved.

The double-rotor compressor provided by the utility model comprises the middle plate, the exhaust ports of the upper cylinder and the lower cylinder are communicated with the air inlet holes, and the air enters the silencing cavity to dissipate energy, so that the noise is eliminated, and the performance of the compressor is improved.

Drawings

FIG. 1 is a schematic view of a mid-plane of the present invention;

FIG. 2 is another schematic view of an intermediate plate of the present invention;

FIG. 3 is a further schematic view of an intermediate plate according to the present invention;

FIG. 4 is a schematic view of a dual rotor compressor of the present invention;

fig. 5 is a view at a-a in fig. 4.

In the figure:

1. a middle plate; 11. an upper plate; 12. a lower plate; 121. an annular positioning groove; 13. a sound-deadening chamber; 131. an air inlet; 132. a through-flow aperture; 2. a seal ring; 21. a U-shaped ring groove; 3. an upper cylinder; 4. a lower cylinder; 5. a reservoir.

Detailed Description

The technical scheme of the utility model is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The double-rotor compressor is a preferred choice for commercial air conditioning systems due to the characteristics of good balance, large displacement and the like. In order to ensure the performance of the dual-rotor compressor, a dual-cylinder four-exhaust structure is generally adopted. In order to prevent the refrigerant gas in the cavity of the intermediate plate from flowing into the compressor shell, as shown in fig. 1-5, the present invention provides an intermediate plate. The intermediate plate 1 has a hollow sound-deadening chamber 13, and an air inlet hole 131 and a through-flow hole 132 communicating with the sound-deadening chamber 13 are provided in the intermediate plate 1, and the intermediate plate 1 includes: upper plate 11, lower plate 12 and sealing ring 2. Wherein, the upper plate 11 is covered on the lower plate 12, and the upper plate 11 and the lower plate 12 are enclosed to form a silencing cavity 13; the sealing ring 2 is fixedly arranged between the upper plate 11 and the lower plate 12 and is used for sealing the sound-deadening cavity 13. The gas enters the silencing cavity 13 through the gas inlet hole 131 and is then discharged through the through-flow hole 132, the intermediate plate 1 is composed of an upper plate 11 and a lower plate 12, and a sealing ring 2 is arranged between the upper plate 11 and the lower plate 12 and used for sealing the silencing cavity 13, so that the refrigerant gas in the intermediate plate 1 and the gas in the compressor shell are prevented from leaking, and the performance of the compressor is improved.

Furthermore, an annular groove is formed in the edge of the middle plate 1 along the circumferential direction of the middle plate 1, the annular groove is located between the upper plate 11 and the lower plate 12, and the sealing ring 2 is arranged in the annular groove. By forming the annular groove, the seal ring 2 is interposed between the upper plate 11 and the lower plate 12, and the gap between the upper plate 11 and the lower plate 12 is closed by the deformation of the seal ring 2, thereby preventing blow-by. In the present embodiment, a U-shaped ring groove 21 is further opened on the side of the sealing ring 2 facing the middle plate 1. Even if refrigerant gas leaks from the gap between the upper plate 11 and the lower plate 12, pressure is formed inside the U-shaped ring, so that the two sides of the opening of the U-shaped ring are outwards opened and are attached to the matching surface of the annular groove more tightly, leakage is effectively prevented, and the sealing effect is improved.

In other embodiments, further, an annular positioning groove 121 is formed in the lower plate 12 along the circumferential direction of the lower plate 12, the sealing ring 2 is embedded in the annular positioning groove 121, the upper end of the sealing ring 2 protrudes relative to the lower plate 12, and the protruding portion of the sealing ring 2 is sandwiched between the upper plate 11 and the lower plate 12. With the above arrangement, the gap between the upper plate 11 and the lower plate 12 can be closed by the deformation of the gasket 2, thereby preventing gas leakage.

In other embodiments, the cross-section of the seal ring 2 is T-shaped. The T-shaped ring can be made of oil-resistant rubber (NBR, HNBR and the like), and the T-shaped ring is close to the sealing surface under the extrusion action of pressure in the compressor shell, so that the sealing effect is achieved. Furthermore, an annular convex groove is formed in the edge of the middle plate 1 along the circumferential direction of the middle plate 1, the convex groove is located between the upper plate 11 and the lower plate 12, and the sealing ring 2 is arranged in the convex groove. The sealing ring 2 is clamped between the upper plate 11 and the lower plate 12, and the contact area between the sealing ring 2 and the middle plate 1 can be increased due to the convex groove, so that the sealing effect can be further improved after the sealing ring 2 is clamped and deformed.

Further, the sound-deadening chamber 13 has a ring shape or a multi-lobed shape, and the air intake holes 131 and the through-flow holes 132 are located at both ends of the sound-deadening chamber 13 in the diameter direction. In this way, it can be ensured that a distance between the air inlet hole 131 and the through-flow hole 132 is long enough, so that the air can be sufficiently attenuated after entering the silencing cavity 13, and the silencing effect is ensured.

Furthermore, a plurality of protrusions are convexly arranged on the wall of the silencing cavity 13. Through setting up a plurality of archs, can further slow down gaseous flow, promote the decay effect to gas energy. Of course, in other embodiments, a plurality of grooves may be formed on the wall of the sound deadening chamber 13, and the sound deadening effect may also be achieved.

Further, a pressure valve is provided on the intermediate plate 1, and an exhaust port of the pressure valve is communicated with the intake port 131. By providing a pressure valve, the gas compressed by the cylinder can enter the sound-deadening chamber 13 only after having a certain pressure. Specifically, in the present embodiment, the pressure valve is a reed valve. As shown in fig. 4, the present embodiment further provides a dual-rotor compressor, which includes an upper cylinder 3, a lower cylinder 4, and the middle plate 1 as above, the upper cylinder 3 and the lower cylinder 4 are located at two sides of the middle plate 1, and both the exhaust port of the upper cylinder 3 and the exhaust port of the lower cylinder 4 are communicated with the air intake hole 131. The outside air enters the upper cylinder 3 and the lower cylinder 4 through the liquid reservoir 5, is compressed, enters the middle plate 1, passes through the silencing chamber 13 and is discharged.

Further, in order to solve the problem that the deformation of the cavity wall of the middle plate 1 is large due to the fact that the cavity of the middle plate 1 is clamped between the compression cavity of the upper cylinder 3 and the compression cavity of the lower cylinder 4 in the existing double-cylinder four-exhaust structure, the cavity of the middle plate 1 extends to the outside of the compression cavity of the upper cylinder 3 and the compression cavity of the lower cylinder 4. Specifically, the lower plate 12 and the upper plate 11 each include a central portion and a flared portion; the middle position of central part is provided with the through-hole that is used for the compressor crankshaft to pass along the first direction, and the first direction is parallel with the extending direction of bent axle, and the abduction portion encircles the central part and outwards extends the setting along the radial direction of through-hole, and the maximum external diameter of abduction portion is between the internal diameter of the outer diameter of last cylinder 3 and lower cylinder 4 and the shell body of compressor. The central part of the upper plate 11 and the upper cylinder cover are used for sealing the upper cylinder to form an upper compression closed cavity, and the central part of the lower plate 12 and the lower cylinder cover are used for sealing the lower cylinder to form a lower compression closed cavity; at least one of the upper plate 11 and the lower plate 12 is provided with a groove on the outward extending part, and the outward extending part of the upper plate 11 and the outward extending part of the lower plate 12 are surrounded to form a sound-deadening cavity 13. The intermediate plate 1 with the structure can not only enhance the rigidity of the part of the intermediate plate 1 participating in sealing the compression chamber, but also play a role in increasing the capacity of the silencing chamber 13 of the intermediate plate 1.

In the embodiment, the double-rotor compressor adopts the middle plate 1, because the silencing cavity 13 of the middle plate 1 is arranged outside the compression cavities of the upper cylinder 3 and the lower cylinder 4, and the part of the middle plate 1, which is used for forming the compression closed cavity with the upper cylinder 3 and the lower cylinder 4, is of a solid structure, the rigidity of the middle plate 1 participating in sealing the compression cavity part can be enhanced, the exhaust channel can be increased, and the exhaust resistance can be reduced.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The utility model provides an intermediate plate, its characterized in that, intermediate plate (1) have hollow amortization chamber (13), set up on intermediate plate (1) with inlet port (131) and through-flow hole (132) that amortization chamber (13) communicate, intermediate plate (1) includes:

the sound attenuation device comprises an upper plate (11) and a lower plate (12), wherein the upper plate (11) is covered on the lower plate (12), and the upper plate (11) and the lower plate (12) enclose to form the sound attenuation cavity (13);

the sealing ring (2) is arranged between the upper plate (11) and the lower plate (12) and used for sealing the silencing cavity (13).

2. An intermediate plate according to claim 1, characterized in that an annular groove is opened in the periphery of the intermediate plate (1) at the edge of the intermediate plate (1) along the circumference of the intermediate plate (1), the annular groove being located between the upper plate (11) and the lower plate (12), the sealing ring (2) being disposed in the annular groove.

3. An intermediate plate according to claim 2, characterized in that the side of the sealing ring (2) facing the intermediate plate (1) is provided with a U-shaped ring groove (21).

4. The intermediate plate according to claim 1, wherein an annular positioning groove (121) is formed in the lower plate (12) along the circumferential direction of the lower plate (12), the sealing ring (2) is embedded in the annular positioning groove (121), the upper end of the sealing ring (2) protrudes relative to the lower plate (12), and the protruding portion of the sealing ring (2) is sandwiched between the upper plate (11) and the lower plate (12).

5. An intermediate plate according to claim 1, characterised in that the cross-section of the sealing ring (2) is T-shaped.

6. An intermediate plate according to claim 5, characterized in that an annular convex groove is arranged at the edge of the intermediate plate (1) along the circumferential direction of the intermediate plate (1), the convex groove is positioned between the upper plate (11) and the lower plate (12), and the sealing ring (2) is arranged in the convex groove.

7. An intermediate plate as claimed in claim 1, characterised in that said silencing chamber (13) is annular or multi-lobed.

8. An intermediate plate as claimed in claim 1, characterised in that a pressure valve is arranged on the intermediate plate (1), the outlet of which pressure valve communicates with the inlet opening (131).

9. A twin-rotor compressor, characterized by comprising an upper cylinder (3), a lower cylinder (4) and a middle plate according to any one of claims 1 to 8, the upper cylinder (3) and the lower cylinder (4) being located on both sides of the middle plate (1), and the exhaust port of the upper cylinder (3) and the exhaust port of the lower cylinder (4) being in communication with the intake port (131).

10. The twin-rotor compressor according to claim 9, wherein the lower plate (12) and the upper plate (11) each comprise a central portion and a flared portion, the flared portion extends outward in a radial direction around the central portion, the maximum outer diameter of the flared portion is between the outer diameters of the upper cylinder (3) and the lower cylinder (4) and the inner diameter of the shell of the compressor, the central portion and the upper cylinder cover of the upper plate (11) are used for sealing the upper cylinder (3) to form an upper compression closed cavity, the central portion and the lower cylinder cover of the lower plate (12) are used for sealing the lower cylinder (4) to form a lower compression closed cavity, the flared portion of at least one of the upper plate (11) or the lower plate (12) is provided with a groove, and the flared portion of the upper plate (11) and the flared portion of the lower plate (12) are surrounded to form the muffling cavity (13).