CN212803529U

CN212803529U - Cylinder cover of refrigerator compressor

Info

Publication number: CN212803529U
Application number: CN202021363207.2U
Authority: CN
Inventors: 戴竟雄; 李华军; 金盛江; 王永昌; 王有南
Original assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Current assignee: Huangshi Donper Compressor Co Ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-03-26
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a refrigerator compressor cylinder cover, which comprises a cover body, an exhaust cavity, a buffer cavity and a suction cavity, wherein the suction cavity is positioned in the middle of the cover body and corresponds to a suction hole of a valve plate, and the suction cavity is communicated with the outside from any one side of the cover body; the exhaust cavity is adjacent to the buffer cavity and is separated by a first partition plate, and the first partition plate is provided with a vent groove; the exhaust cavity corresponds to an exhaust hole on the valve plate; a second partition plate is further arranged in the exhaust cavity, a vent hole is formed in the second partition plate, and the second partition plate corresponds to an exhaust valve plate on the valve plate; the top surface of the second partition board facing the valve plate is an arc surface; when the exhaust valve plate tilts to exhaust, the second partition plate faces the top surface of the valve plate and is attached to the exhaust valve plate; the cylinder cover is a workpiece made of engineering plastics, or the outer surface and the inner surface of the cylinder cover are respectively provided with coatings made of engineering plastics. The cylinder cover can reduce the noise of air flow in the cylinder cover, reduce the heat transfer of the cylinder cover to the cylinder head, avoid the overhigh temperature of the cylinder head and ensure the performance of the compressor.

Description

Cylinder cover of refrigerator compressor

Technical Field

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

Background

The cylinder cover of the refrigerator compressor is made of metal materials such as aluminum or aluminum alloy, and when the compressor exhausts air, heat generated by high-temperature and high-pressure refrigerant is transferred to the cylinder head through the cylinder cover, so that the temperature of the cylinder head is overhigh, harmful heating is generated on the refrigerant sucked in the cylinder, the heat efficiency of the compressor is reduced, and the performance of the compressor is reduced. At present, in the field of refrigerator compressors, few people use non-metallic materials as raw materials of cylinder covers.

Disclosure of Invention

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

A cylinder cover of a refrigerator compressor comprises a cover body, an exhaust cavity, a buffer cavity and a suction cavity, wherein the suction cavity is positioned in the middle of the cover body and corresponds to a suction hole of a valve plate, and the suction cavity is communicated with the outside from any side of the cover body; the exhaust cavity is adjacent to the buffer cavity and is separated by a first partition plate, and a vent groove is formed in the first partition plate; the exhaust cavity corresponds to an exhaust hole in the valve plate; a second partition plate is further arranged in the exhaust cavity, a vent hole is formed in the second partition plate, and the second partition plate corresponds to an exhaust valve plate on the valve plate; the top surface of the second partition plate facing the valve plate is an arc surface; when the exhaust valve plate tilts to exhaust, the second partition plate faces the top surface of the valve plate and is attached to the exhaust valve plate; the cylinder cover is a workpiece made of engineering plastics, or the outer surface and the inner surface of the cylinder cover are respectively provided with coatings made of engineering plastics.

Above-mentioned cylinder head installs the back on the compressor, and exhaust chamber and cushion chamber can only pass through the air channel intercommunication under the isolation of first baffle, keep apart completely between chamber and exhaust chamber, the cushion chamber of breathing in, and the flow direction of condensation air current does during the operation: the air inlet pipe of the condensed gas outside the valve plate is connected with the air suction cavity, the condensed gas enters the cylinder of the compressor from the air suction cavity and penetrates through the air suction holes in the valve plate, meanwhile, the condensed gas to be discharged is discharged from the air discharge holes in the valve plate and enters the air discharge cavity, the condensed gas enters the buffer cavity after penetrating through the vent holes in the second partition plate and the vent grooves in the first partition plate, and finally flows into other devices (such as a silencing cavity and the like) of the compressor from the buffer cavity. When the exhaust hole on the valve plate exhausts, the exhaust valve block is blown by the air current to be tilted, and the tilted exhaust valve block is attached to the top surface of the second partition plate, which is a cambered surface, in the maximum height, so that the tilted exhaust valve block is highly buffered and limited, and the tilted exhaust valve block is prevented from being excessively deformed. The cylinder cover is formed by injection molding of engineering plastic materials, or coatings of the engineering plastic materials are directly coated on the inner surface and the outer surface of the cylinder cover, the engineering plastic is made of materials with the advantages of high temperature resistance, high pressure resistance, oil resistance, refrigerant resistance, good heat insulation performance and the like, partial heat of the cylinder cover can be reduced and transferred to the cylinder head, harmful heating of the sucked refrigerant due to overhigh temperature of the cylinder head is avoided, and the performance of the compressor is ensured.

Preferably, a plurality of third partition plates are arranged in the exhaust cavity, and an airflow channel is formed in the exhaust cavity; the starting point of the airflow channel corresponds to the exhaust hole in the valve plate, and the end point of the airflow channel corresponds to the vent groove in the first partition plate. The third partition plate is arranged to prolong the gas flow speed and reduce noise.

More preferably, a plurality of the third partition plates are arranged in a staggered manner, so that the airflow channel is in a hairpin shape. As a specific arrangement mode of the third partition plates, the exhaust cavity is guided by the third partition plates which are arranged in a staggered mode, a formed airflow channel is in a hairpin shape which is bent back and forth, airflow of condensed gas entering the exhaust cavity flows towards the buffer cavity along the airflow channel, the airflow speed can be further prolonged, and noise can be reduced.

Preferably, the number of the buffer cavities is 2, and the 2 buffer cavities are respectively positioned at two sides of the exhaust cavity. After the condensed gas flows into the exhaust cavity from the exhaust valve plate, the condensed gas can flow towards the left and right directions and respectively flow into the buffer cavities on the two sides of the exhaust cavity.

Preferably, the face of the cylinder head facing the valve plate is provided with a ring of protrusions along the contour of the cylinder head. The ring of the bulges has the function that when the cylinder cover is provided with a cover, the ring of the bulges is tightly connected with other workpieces such as a valve plate and the like, so that the problem of air leakage caused by poor sealing is avoided.

Preferably, the coating on the inner surface and the outer surface of the cylinder cover is made of polyetheretherketone, high-temperature nylon or PPS.

Compared with the prior art, the beneficial effects of the utility model are that: this patent is through setting up first baffle and the second baffle that has buffering limiting displacement to the discharge valve piece in the cylinder head to and separate the third baffle that the exhaust chamber prolongs the gas flowrate noise reduction, can show the noise that reduces the air current in the cylinder head, the cylinder head is through selecting for use special material preparation, or the coating, can reduce cylinder head part heat transfer to cylinder head, avoid the cylinder head high temperature and to inspiratory gaseous harmful heating of refrigeration, guarantee the performance of compressor.

Drawings

FIG. 1 is a front view of a cylinder head of a compressor for a refrigerator 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 a compressor for a refrigerator according to embodiment 2;

in the figure: 1. a cover body; 2. an exhaust chamber; 3. a buffer chamber; 4. an air suction cavity; 5. a first separator; 6. a vent channel; 7. a second separator; 8. a vent hole; 9. a top surface; 10. a third partition plate; 11. an air flow channel; 12. and (4) protruding.

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 a compressor of a refrigerator provided in this embodiment includes a cover body 1, a discharge chamber 2, a buffer chamber 3, and a suction chamber 4, where the suction chamber 4 is located in the middle of the cover body 1 and corresponds to a suction hole of a valve plate, and the suction chamber 4 communicates with the outside from any side of the cover body 1 (in this embodiment, the lower side of the cylinder head of fig. 1); the exhaust cavity 2 is adjacent to the buffer cavity 3 and is separated by a first partition plate 5, and a vent groove 6 is formed in the first partition plate 5; the exhaust cavity 2 corresponds to an exhaust hole on the valve plate; a second partition plate 7 is further arranged in the exhaust cavity 2, a vent hole 8 is formed in the second partition plate 7, and the second partition plate 7 corresponds to an exhaust valve plate on the valve plate; the top surface 9 of the second clapboard 7 facing the valve plate is an arc surface; when the exhaust valve plate tilts to exhaust, the second partition plate 7 is attached to the exhaust valve plate towards the top surface 9 of the valve plate; the cylinder cover is a workpiece made of engineering plastics.

After the cylinder cover is installed on a compressor, the exhaust cavity 2 and the buffer cavity 3 can be communicated only through the vent groove 6 under the isolation of the first partition plate 5, and the suction cavity 4 is completely isolated from the exhaust cavity 2 and the buffer cavity 3. As shown in fig. 1, the arrows indicate the flow direction of the condensing airflow when the flow directions of the intake airflow and the exhaust airflow are operated as follows: the air inlet pipe of the condensed gas outside the valve plate is connected with the air suction cavity 4, the condensed gas enters the cylinder of the compressor from the air suction cavity 4 and passes through the air suction holes in the valve plate, meanwhile, the condensed gas to be discharged is discharged from the air discharge holes in the valve plate and enters the air discharge cavity 2, the condensed gas enters the buffer cavity 3 after passing through the vent holes 8 in the second partition plate 7 and the vent grooves 6 in the first partition plate 5, and finally flows into other devices (such as a silencing cavity and the like) of the compressor from the buffer cavity 3. When the exhaust hole on the valve plate exhausts, the exhaust valve plate is blown by the air flow to be tilted, the exhaust valve plate is attached to the top surface 9, which is a cambered surface, of the second partition plate 7 when the exhaust hole is tilted to the maximum height, the tilting of the exhaust valve plate is highly buffered and limited, and the tilting is prevented from being excessively deformed. The cylinder cover is made of engineering plastics through injection molding, the engineering plastics are made of materials with the advantages of high temperature resistance, high pressure resistance, oil resistance, refrigerant resistance, good heat insulation performance and the like, partial heat of the cylinder cover can be reduced and transferred to the cylinder head, harmful heating of the sucked refrigerant due to overhigh temperature of the cylinder head is avoided, and the performance of the compressor is guaranteed.

Example 2

As shown in fig. 3, the cylinder head of the compressor of the refrigerator provided by the embodiment is improved and optimized on the basis of the embodiment 1 as follows:

1. a plurality of third partition plates 10 are arranged in the exhaust cavity 2, an airflow channel 11 is formed in the exhaust cavity 2, and the third partition plates 10 are arranged in a staggered mode, so that the airflow channel 11 is in a hairpin shape; the starting point of the airflow channel 11 corresponds to an exhaust hole on a valve plate, and the end point of the airflow channel corresponds to a vent groove 6 on the first partition plate 5; the air flow channel 11 formed by the guidance of the third partition plates 10 which are arranged in a staggered way in the exhaust cavity 2 is in a hairpin shape which is bent back and forth, and the air flow of the condensed air entering the exhaust cavity 2 flows towards the buffer cavity 3 along the air flow channel 11, so that the air flow speed can be further prolonged, and the noise can be reduced;

2. the number of the buffer cavities 3 is 2, and the 2 buffer cavities 3 are respectively positioned at two sides of the exhaust cavity 2; after the condensed gas flows into the exhaust cavity 2 from the exhaust valve plate, the condensed gas can flow towards the left and right directions and respectively flow into the buffer cavities 3 at the two sides of the exhaust cavity 2;

3. the side of the cylinder head facing the valve plate is provided with a ring of protrusions 12 along the contour of the cylinder head. The ring of the bulge 12 has the function that when the cylinder cover is installed with a cover, the ring of the bulge is tightly connected with other workpieces such as a valve plate and the like, and the problem of air leakage caused by poor sealing is avoided.

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

1. The cylinder cover of the refrigerator compressor is characterized by comprising a cover body, an exhaust cavity, a buffer cavity and a suction cavity, wherein the suction cavity is positioned in the middle of the cover body and corresponds to a suction hole of a valve plate, and the suction cavity is communicated with the outside from any side of the cover body; the exhaust cavity is adjacent to the buffer cavity and is separated by a first partition plate, and a vent groove is formed in the first partition plate; the exhaust cavity corresponds to an exhaust hole in the valve plate; a second partition plate is further arranged in the exhaust cavity, a vent hole is formed in the second partition plate, and the second partition plate corresponds to an exhaust valve plate on the valve plate; the top surface of the second partition plate facing the valve plate is an arc surface; when the exhaust valve plate tilts to exhaust, the second partition plate faces the top surface of the valve plate and is attached to the exhaust valve plate; the cylinder cover is a workpiece made of engineering plastics, or the outer surface and the inner surface of the cylinder cover are respectively provided with coatings made of engineering plastics.

2. The cylinder head of a compressor of a refrigerator according to claim 1, wherein a plurality of third partition plates are provided in the discharge chamber and form an air flow passage in the discharge chamber; the starting point of the airflow channel corresponds to the exhaust hole in the valve plate, and the end point of the airflow channel corresponds to the vent groove in the first partition plate.

3. The compressor cylinder head of a refrigerator as claimed in claim 2, wherein the third partitions are staggered to form the air flow path in a hairpin shape.

4. The cylinder head of a compressor of a refrigerator as claimed in claim 1, wherein the number of the buffer chambers is 2, and 2 buffer chambers are respectively located at both sides of the discharge chamber.

5. The refrigerator compressor cylinder head of claim 1, wherein a face of the cylinder head facing the valve plate is provided with a ring of protrusions along a contour of the cylinder head.

6. The cylinder head of a refrigerator compressor of claim 1, wherein the coating on the inner and outer surfaces of the cylinder head is polyetheretherketone, high temperature nylon or PPS.