CN212803528U - Cylinder cover of piston compressor - Google Patents

Abstract

The utility model discloses a piston compressor cylinder head, including the lid and the induction port that is located the lid middle part, the edge place plane that the edge that is close to the valve plate of induction port is parallel and level with the lid face of cylinder head, be equipped with 2 first baffles and 2 second baffles in the lid, first baffle and second baffle symmetry set up in induction port both sides, 2 first baffle symmetry sets up and is equipped with left cavity between, 2 the second baffle symmetry sets up and is equipped with right cavity between; an exhaust chamber is arranged between the first partition plate and the adjacent second partition plate; the first partition plate and the second partition plate are provided with grooves, so that the left chamber is communicated with the right chamber through the exhaust chamber. When the cylinder cover is used, condensed gas to be discharged can circulate in double channels from left to right, exhaust resistance is reduced, heat exchange of gas refrigerants in the cylinder cover is reduced, suction temperature is reduced, suction efficiency is improved, and performance of a compressor is improved.

Description

Cylinder cover of piston compressor

Technical Field

The utility model belongs to the technical field of piston compressor, especially a piston compressor cylinder head.

Background

The cylinder head of the existing piston compressor is provided with a groove opening on the inner side surface, and gas refrigerant is sucked from the groove opening on the inner side surface of the cylinder head through a silencing cavity and then enters the cylinder. However, the cylinder head of this structure is liable to cause intake overheating. The high-temperature high-pressure gas discharged from the compressor cylinder enables the temperature of the cylinder cover to be higher, the gas refrigerant enters from the side opening of the cylinder cover and then enters the middle air suction port, and the low-temperature low-pressure refrigerant is easily heated, so that the air suction efficiency is influenced.

In the prior art, granted patent CN209892409U provides a cylinder head for a refrigeration compressor, which is characterized in that a plurality of exhaust chambers partitioned by partition plates are arranged on a cover body, and the exhaust chambers are communicated together through a notch, so that gas can circulate among the exhaust chambers. However, this method still cannot eliminate the adverse effect of the refrigerant of low temperature and low pressure on the suction efficiency due to being heated.

Disclosure of Invention

In order to solve the problems of the prior art, the utility model provides a piston compressor cylinder head realizes through following technical scheme.

A piston compressor cylinder cover comprises a cover body and an air suction port located in the middle of the cover body, wherein the plane of the edge of the air suction port close to a valve plate is flush with the covering surface of the cylinder cover, 2 first partition plates and 2 second partition plates are arranged in the cover body, the first partition plates and the second partition plates are symmetrically arranged on two sides of the air suction port, 2 first partition plates are symmetrically arranged, a left cavity is arranged between the 2 first partition plates, and a right cavity is arranged between the 2 second partition plates; an exhaust chamber is arranged between the first partition plate and the adjacent second partition plate; the first partition plate and the second partition plate are provided with grooves, so that the left chamber is communicated with the right chamber through the exhaust chamber.

In the cylinder cover of the piston compressor, the left chamber and the right chamber are also respectively positioned at the left side and the right side of the air suction port, the upper part and the lower part of the air suction port are respectively provided with the exhaust chamber, and the exhaust chambers are used for communicating the left chamber and the right chamber. The cylinder cover is tightly attached to the valve plate and fixedly covered with the exhaust valve plate, the air suction port is aligned with the air suction hole in the valve plate, the right cavity and the left cavity respectively correspond to the exhaust holes in the valve plate, the exhaust valve plate covers the surface of each exhaust hole, and the right cavity is further communicated with the silencing cavity.

When the cylinder cover is assembled and is formally used, the air suction port is connected with a pipeline for conveying condensed gas, the condensed gas enters from the air suction port and penetrates through the air suction hole in the valve plate to enter the cylinder, the condensed gas to be discharged passes through the exhaust hole from the valve plate and backs up the exhaust valve plate to enter the left chamber and the right chamber, the condensed gas in the left chamber directly enters the silencing cavity and then is discharged out of the cylinder, the condensed gas in the right chamber is divided into two paths and flows into the left chamber from the two exhaust chambers above and below, the exhaust resistance is effectively reduced by the flowing mode of the condensed gas, the gas can be rapidly discharged, the heat exchange of a gas refrigerant in the cylinder cover is reduced, the air suction temperature is reduced, the air suction efficiency is improved, and the. Of course, it is also possible to connect the right chamber to the muffling chamber, so that the flow direction of the condensed gas in the cylinder head is reversed, i.e. the gas of the left chamber flows into the right chamber into the muffling chamber.

Preferably, 1 arbitrary first baffle and 1 arbitrary second baffle correspond with the valve tongue of 1 exhaust valve piece respectively and the terminal surface that corresponds is the cambered surface, the radian of cambered surface matches with the shape when the valve tongue perk, the head end of cambered surface closes the face parallel and level with the lid of cylinder head. The first partition plate and the second partition plate with the cambered surfaces are used for limiting and buffering the exhaust valve plate which is tilted in the exhaust process, and the exhaust valve plate and the valve tongue are elastic metal sheets generally, so that the valve tongue is the cambered surface when being blown by the pressure of condensed gas, and therefore the first partition plate and any 1 second partition plate are also arranged into the cambered surfaces, wherein the end surfaces of the second partition plate and the exhaust valve plate correspond to each other.

Preferably, the suction ports are provided in a number of 2 side by side. The air suction ports can be arranged side by side in the vertical direction or the horizontal direction and are used for increasing air suction efficiency.

Preferably, a plurality of third partition plates are arranged in the exhaust chamber, and the grooves are also formed in the third partition plates. The exhaust chamber is partitioned by a third partition plate in order to increase the strength of the cylinder head.

Preferably, a plurality of ribs are additionally arranged on the inner wall of the cover body. The ribs play a supporting role for the cover body.

Preferably, the cover body is provided with a plurality of radiating fins on the outer portion.

Preferably, the width of the partition board is 2-3mm, and the depth of the groove is 5-8 mm.

Compared with the prior art, the beneficial effects of the utility model are that: this patent all sets up the cavity through the both sides at the suction hole to through the exhaust chamber intercommunication of suction hole upper and lower side, the direct suction hole that follows cylinder head central point of gas refrigerant gets into the cylinder, compare in the gas refrigerant of current cylinder head all along the mode that gets into from the cylinder head middle part again from the edgewise opening, gas from left to right can the binary channels circulation, reduce the exhaust resistance, the heat exchange of gas refrigerant in the cylinder head has been reduced, reduce the temperature of breathing in, the efficiency of breathing in is improved, promote compressor performance.

Drawings

Fig. 1 is a front view of a cylinder head of a piston compressor according to embodiment 1;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a front view of a cylinder head of the piston compressor according to embodiment 2;

FIG. 4 is a side perspective view of the cylinder head of the piston compressor according to embodiment 2;

in the figure: 1. a cover body; 2. an air suction port; 3. a left chamber; 4. a right chamber; 5. an exhaust chamber; 6. a first separator; 7. a second separator; 8. a groove; 9. a cambered surface; 10. a third partition plate; 11. and a heat sink.

Detailed Description

The technical solutions of the embodiments in this patent will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, not all embodiments, of this patent. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the patent without making creative efforts, shall fall within the protection scope of the patent.

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "top", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the patent and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the patent. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of this patent, it is noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

The patent is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

Example 1

As shown in fig. 1 and 2, the cylinder head of the piston compressor provided in this embodiment includes a cover body 1 and a suction port 2 located in the middle of the cover body 1, a plane where an edge of the suction port 2 close to a valve plate is located is flush with a covering surface of the cylinder head, the cover body 1 is provided with 2 first partition plates 6 and 2 second partition plates 7, the first partition plates 6 and the second partition plates 7 are symmetrically arranged at two sides of the suction port 2, the 2 first partition plates 6 are symmetrically arranged with a left chamber 3 therebetween, and the 2 second partition plates 7 are symmetrically arranged with a right chamber 4 therebetween; an exhaust chamber 5 is arranged between the first partition plate 6 and the adjacent second partition plate 7; the first partition plate 6 and the second partition plate 7 are provided with grooves 8, so that the left chamber 3 and the right chamber 4 are communicated through the exhaust chamber 5.

As shown in fig. 1, in the cylinder head of the piston compressor, chambers are provided on the left and right sides of the intake port, and discharge chambers are provided above and below the intake port to communicate the left and right chambers. The cylinder cover is tightly attached to the valve plate and fixedly covered with the exhaust valve block, the air suction port is aligned with the air suction hole in the valve plate, exhaust holes are formed in two sides of the air suction hole in the valve plate, the right cavity and the left cavity respectively correspond to the exhaust holes in the valve plate, the exhaust hole is covered with the exhaust valve block, and the right cavity is communicated with the silencing cavity. The middle part of the valve plate is provided with a suction hole,

when the cylinder cover is assembled and formally used, the air suction port is connected with a pipeline for conveying condensed gas; as shown by the arrow of fig. 2, the condensed gas enters from the suction port and passes through the suction hole on the valve plate to enter the cylinder; condensed gas to be discharged passes through the exhaust hole from the valve plate and jacks up the exhaust valve plate to enter the left chamber and the right chamber, and the arrow direction shown in figure 1 is the flow direction of the condensed gas of the cylinder cover; the condensing gas of left cavity directly gets into exhaust cylinder behind the amortization chamber, and the condensing gas of right cavity then divides into two the tunnel respectively from two discharge chambers of upper and lower side inflow left cavity, and such condensing gas flow mode has effectively reduced the exhaust resistance, makes gas discharge fast, has reduced the heat exchange of gas refrigerant in the cylinder head, reduces the temperature of breathing in, improves the efficiency of breathing in, promotes compressor performance. Of course, it is also possible to connect the right chamber to the muffling chamber, so that the flow direction of the condensed gas in the cylinder head is reversed, i.e. the gas of the left chamber flows into the right chamber into the muffling chamber.

Example 2

As shown in fig. 3 and 4 (the arrow of fig. 3 indicates the flowing direction of the condensed gas in the cylinder head), in the cylinder head of the piston compressor provided by the embodiment, the number of the suction ports 2 is 2, and the suction ports are arranged side by side along the vertical direction; arbitrary 1 first baffle 6 and arbitrary 1 second baffle 7 corresponds and the terminal surface that corresponds with the valve tongue of 1 discharge valve piece respectively is cambered surface 9, the radian of cambered surface 9 matches with the shape when the valve tongue perk, the head end of cambered surface 9 closes the face parallel and level with the lid of cylinder head. A plurality of third partition plates 10 are arranged in the exhaust chamber 5, and grooves 8 are also formed in the third partition plates 8; a plurality of radiating fins 11 are arranged outside the cover body 1.

The above embodiments describe the implementation of the present invention in detail, however, the present invention is not limited to the specific details of the above embodiments. Within the scope of the claims and the technical idea of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

Claims (6)

1. A piston compressor cylinder cover is characterized by comprising a cover body and an air suction port located in the middle of the cover body, wherein the plane of the edge of the air suction port close to a valve plate is flush with the covering surface of the cylinder cover, 2 first partition plates and 2 second partition plates are arranged in the cover body, the first partition plates and the second partition plates are symmetrically arranged on two sides of the air suction port, 2 first partition plates are symmetrically arranged, a left cavity is arranged between the 2 first partition plates, and a right cavity is arranged between the 2 second partition plates; an exhaust chamber is arranged between the first partition plate and the adjacent second partition plate; the first partition plate and the second partition plate are provided with grooves, so that the left chamber is communicated with the right chamber through the exhaust chamber.

2. The piston compressor cylinder head according to claim 1, wherein any 1 of the first partition plates and any 1 of the second partition plates correspond to the valve tongues of 1 exhaust valve plate respectively, and the corresponding end surfaces are cambered surfaces, the radian of the cambered surfaces is matched with the shape when the valve tongues are tilted, and the head ends of the cambered surfaces are flush with the cover surface of the cylinder head.

3. The piston compressor cylinder head as claimed in claim 1, characterized in that said suction ports are provided 2 side by side.

4. The piston compressor cylinder head as defined in claim 1, wherein a plurality of third partitions are disposed in said discharge plenum, said third partitions also having said grooves formed therein.

5. The piston compressor cylinder head as defined in claim 1, wherein an inner wall of the cover body is provided with a plurality of bead sheets.

6. The piston compressor cylinder head as defined in claim 1, wherein the partition has a width of 2-3mm and the groove has a depth of 5-8 mm.

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