CN212690290U

CN212690290U - Lightweight compressor housing

Info

Publication number: CN212690290U
Application number: CN202021293492.5U
Authority: CN
Inventors: 李志敏
Original assignee: Zhejiang Hanson Precise Machinery Co ltd
Current assignee: Zhejiang Hanson Precise Machinery Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-03-12
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a lightweight compressor housing, including oil content shell, casing, motor shell and end cover, the oil content shell can be dismantled with the left end of casing and be connected, and the end cover can be dismantled with the right-hand member of motor shell and be connected its characterized in that: casing and the integrative casting of motor shell, the maximum diameter of casing is greater than the maximum diameter of motor shell, has straight section of thick bamboo on the casing, and the left end and the oil content shell of straight section of thick bamboo can be dismantled and be connected, is equipped with smooth transition's linkage segment between straight section of thick bamboo and the motor shell, and integrative casting has the strengthening rib strip on the motor shell. The utility model discloses well casing and motor shell casting integrated into one piece, the end cover texture is light, is difficult to make mistakes with end cover bolt fastening connection to on the motor shell, has avoided fastening bolt to revolve wrong skew or revolve wrong problem not in place, better assurance compressor housing's leakproofness. In addition, the motor shell is integrally cast with reinforcing ribs, so that the strength of the motor shell can be increased.

Description

Lightweight compressor housing

Technical Field

The utility model relates to the technical field of mechanical equipment, especially, relate to a lightweight compressor housing.

Background

The compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas, and is the heart of a refrigeration system. The compressor pump sucks low-temperature and low-pressure refrigerant gas from the air suction pipe, the electric motor operates to drive the piston to compress the refrigerant gas, and the high-temperature and high-pressure refrigerant gas is discharged to the exhaust pipe to provide power for the refrigeration cycle. At present, an oil content shell outside an oil separator, a shell outside a compression pump and a motor shell outside an electric motor need to be connected together through a flange plate and a fastening bolt by a compressor shell, and due to the fact that the weight of the shell and the motor shell is large, assembly operation is very difficult, the problem of insufficient accuracy in centering is easily caused in assembly operation, the situation that the fastening bolt is twisted to generate deviation or is not twisted in place can be caused, and then the sealing performance between the shell and the motor shell is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lightweight compressor housing can effectively solve present compressor housing and lead to the relatively poor problem of leakproofness because of the difficult difficulty of assembly operation is sleepy.

In order to solve the technical problem, the utility model adopts the following technical scheme: the utility model provides a lightweight compressor housing, includes oil content shell, casing, motor shell and end cover, and the oil content shell can be dismantled with the left end of casing and be connected, and the end cover can be dismantled with the right-hand member of motor shell and be connected its characterized in that: casing and the integrative casting of motor shell, the maximum diameter of casing is greater than the maximum diameter of motor shell, has straight section of thick bamboo on the casing, and the left end and the oil content shell of straight section of thick bamboo can be dismantled and be connected, is equipped with smooth transition's linkage segment between straight section of thick bamboo and the motor shell, and integrative casting has the strengthening rib strip on the motor shell.

Preferably, the housing is located on the same horizontal plane as the bottom end of the motor housing. Thus, the supporting seat is convenient to set, and in addition, the integral casting is convenient.

Preferably, the reinforcing ribs are recessed from the motor case outer surface toward the central axis, and the reinforcing ribs are raised from the motor case inner surface toward the central axis. The reinforcing ribs are formed by the inner surface of the motor shell in a protruding mode, so that pressure borne by the interior of the motor shell can be better dispersed, and the corresponding position of the outer surface of the motor shell is recessed, so that the weight can be further reduced.

Preferably, the reinforcing ribs comprise axial reinforcing ribs arranged axially along the motor housing, the axial reinforcing ribs being cast integrally with the motor housing. The axial reinforcing ribs are arranged, so that the strength of the whole motor shell can be increased.

Preferably, the axial strengthening rib has many, and many axial strengthening ribs distribute along motor shell circumference equidistant in proper order. The stress concentration can be avoided by the arrangement, and the strength of the shell is further enhanced.

Preferably, there are five axial strengthening ribs. At this moment, under the condition of ensuring the strength of the machine shell, the wall thickness of the machine shell can be reduced, the reasonable wall thickness meets the requirement of a casting process, the problems of cracks and the like are avoided during integral casting, and the air tightness of the machine shell is ensured.

Preferably, the reinforcing ribs further comprise circumferential reinforcing ribs arranged along the circumferential direction of the motor shell, and the circumferential reinforcing ribs and the motor shell are integrally cast. The axial reinforcing ribs and the circumferential reinforcing ribs which are perpendicular to each other are arranged to form the net-shaped reinforcing ribs, so that the strength of the motor shell is further improved.

Preferably, the number of the circumferential reinforcing ribs is two, one circumferential reinforcing rib is located on the motor shell and close to the weight reducing surface, and the other circumferential reinforcing rib is located on the motor shell and close to the end cover. The positions of the motor shell close to the two ends are respectively provided with a circumferential reinforcing rib which is matched with the original axial reinforcing ribs to form a net-shaped reinforcing rib, so that the strength of the motor shell is further improved.

Compared with the prior art, the utility model discloses following beneficial effect has:

original casing links together with original motor shell in original compressor housing, the utility model discloses in change it into casing and the integrative casting of motor shell, then connect the end cover on the motor shell. The connecting section is designed on the casing, so that the use of materials can be reduced while the accommodating space is ensured, the weight of the casing is reduced, and the whole structure is more compact. And the end cover texture is light, compares in the past original casing and is connected with original motor shell, through lightweight design back, is more simple and convenient with the operation of end cover connection on the motor shell, and the assembly is more convenient than original, is difficult to make mistakes, has avoided fastening bolt to twist the problem of skew or not in place of twisting, better assurance compressor housing's leakproofness. In addition, the motor shell is provided with the reinforcing ribs, and the reinforcing ribs and the motor shell are integrally cast, so that the strength of the motor shell can be increased, and the strength can be ensured to meet the requirements under the conditions of more compact structure and light weight.

Drawings

Fig. 1 is a schematic view illustrating a structure of a lightweight compressor housing according to a first embodiment of the present invention;

fig. 2 is a schematic view of a connection section of a casing according to an embodiment of the present invention;

FIG. 3 is a side view of a motor housing according to a first embodiment of the present invention;

fig. 4 is a schematic view of a motor casing structure provided with axial reinforcing ribs and circumferential reinforcing ribs in the second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a conventional compressor housing.

The motor comprises a shell 1, a straight cylinder section 11, a connecting section 12, a motor shell 2, an oil separation shell 3, an end cover 4, a reinforcing rib 5, an axial reinforcing rib 51, an annular reinforcing rib 52, an original shell 6 and an original motor shell 7.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The first embodiment is as follows: as shown in fig. 1 to 3, a lightweight compressor shell comprises a shell 1, a motor shell 2, an oil content shell 3 and an end cover 4, wherein the oil content shell 3 is detachably connected with the left end of the shell 1, the shell 1 and the motor shell 2 are integrally cast, the right end of the motor shell 2 is detachably connected with the end cover 4, and the detachable connection can adopt a mode such as threaded connection or pin connection and has a good sealing effect when being matched with a flange and a sealing ring for use. Wherein, the casing 1 and the motor casing 2 are cast and integrally formed, and they are connected without seams, and the separate description of the casing 1 and the motor casing 2 is for the convenience of clearly describing their structures. The casing 1 has a straight cylinder section 11, the left end of the straight cylinder section 11 is detachably connected with the oil separation housing 3, and a smooth transition connecting section 12 is arranged between the straight cylinder section 11 and the motor housing 2. The connection section 12 is described here as follows: as shown in fig. 5, the height of the original casing 6 and the original motor casing 7 is designed according to the height of the compressor pump and the electric motor which are internally installed, and the connection part between the compressor pump and the electric motor does not need so large space, but because the original casing 6 and the original motor casing 7 are fastened and connected by the thick flange plate bolt, and the position of the flange plate corresponds to the connection part between the compressor pump and the electric motor, even if the connection part does not need so large space, the corresponding change can not be made. And the utility model discloses a fastening connection change original casing 6 and original motor shell 7 is current integrated into one piece structure, has saved the thick and heavy ring flange of original junction to corresponding linkage segment 12 of position design that corresponds on casing 1 alleviates casing 1's weight, makes overall structure compacter simultaneously. In order to ensure the strength of the motor shell after lightweight design, reinforcing ribs 5 are integrally cast on the motor shell 2.

Wherein the reinforcing ribs 5 are designed to be recessed from the outer surface of the motor housing 2 towards the central axis and to be raised from the inner surface of the motor housing 2 towards the central axis. Therefore, the reinforcing ribs 5 can better disperse the pressure applied to the interior of the motor shell 2, and the corresponding positions on the outer surface of the motor shell 2 are concave, so that the weight can be further reduced.

Wherein, the reinforcing rib 5 can be arranged along the axial direction of the motor shell 2, namely the axial reinforcing rib 51, and the axial reinforcing rib 51 and the motor shell 2 are integrally cast. The provision of the axial reinforcing ribs 51 can reinforce the strength of the motor case 2.

In order to avoid stress concentration and further enhance the strength of the motor housing 2, the axial reinforcing ribs 51 may be provided in plural, and each axial reinforcing rib 51 is distributed along the circumferential direction of the motor housing 2 at equal intervals in sequence.

According to many times of experiments, when axial strengthening rib 51 set up five, under the circumstances of guaranteeing 2 intensity of motor shell, can attenuate the wall thickness of motor shell 2, reasonable wall thickness accords with casting process requirement more, avoids producing crackle scheduling problem, better assurance motor shell 2's gas tightness when integrative casting.

Compared with the original compressor housing, the lightweight compressor housing provided by the embodiment is characterized in that the original housing 6 and the original motor housing 7 are connected together in the original compressor housing, the lightweight compressor housing provided by the embodiment is integrally cast with the housing 1 and the motor housing 2 and then connected with the end cover 4, wherein the housing 1 is provided with the connecting section 12, the accommodating space is ensured, the material consumption is reduced, the weight of the housing 1 is reduced, and the integral structure is more compact. And end cover 4 texture is light, compares in the past original casing 6 and original motor shell 7 are connected, through the lightweight design after, with the operation of end cover 4 connection on motor shell 2 more simple and convenient, the assembly is more convenient than original, is difficult to make mistakes, has avoided fastening bolt to twist the problem of wrong deviation or twisting not in place, better assurance compressor housing's leakproofness. Be provided with strengthening rib 5 on motor shell 2, can increase motor shell 2's intensity to guarantee that intensity meets the requirements under the prerequisite that overall structure is compacter, weight is lighter.

In addition, the original shell 6 and the original motor shell 7 need to bear the acting force of main parts, so the strength of the shell is required to be high, the strength is ensured mainly by increasing the wall thickness at present, but for the casting process, the wall thickness of a casting is too large, the solidification cooling speed of the casting is slowed down, the compactness of the casting is reduced, cracks and other problems are easy to occur, leakage is easy to occur during air tightness inspection, and the sealing performance of the shell of the compressor is also influenced. The utility model provides a pair of lightweight compressor housing carries out the optimal design back in quantity and the position to strengthening rib strip 5, has still obtained on the other hand's beneficial effect: the utility model discloses an among the preferred embodiment, 2 axial directions along the motor shell set up five axial strengthening ribs 51, axial strengthening rib 51 is along 2 circumference equidistant distributions of motor shell in proper order, can improve the intensity of motor shell 2 so greatly, can be under the condition that assurance intensity is up to standard the attenuate wall thickness, reasonable wall thickness can prevent to produce the defect in the processing casting process, satisfy the technological requirement, can avoid producing the crackle when integrative casting, just also avoided the seepage because of the crackle produces, thereby the leakproofness of assurance compressor housing that can be better.

Example two: as shown in fig. 4, the present embodiment is different from the above embodiments in that the circumferential reinforcing ribs 52 are provided on the motor case 2 in the circumferential direction, and the circumferential reinforcing ribs 52 are integrally cast with the motor case 2.

In this embodiment, a circumferential reinforcing rib 52 may be provided on the motor housing 2 near the connecting section 12 and on the motor housing 2 near the end cover 4.

Based on the above distinguishing technical features, the lightweight compressor housing provided in this embodiment has the mesh-shaped reinforcing ribs 5 formed by the axial reinforcing ribs 51 and the circumferential reinforcing ribs 52 that are perpendicular to each other, so that the strength of the motor housing 2 can be further increased.

The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto, and any person skilled in the art can make changes or modifications within the scope of the present invention.

Claims

1. The utility model provides a lightweight compressor housing, includes oil content shell, casing, motor shell and end cover, the oil content shell can be dismantled with the left end of casing and be connected, the end cover can be dismantled with the right-hand member of motor shell and be connected its characterized in that: the casing is cast with motor shell is integrative, the maximum diameter of casing is greater than the maximum diameter of motor shell, the straight section of thick bamboo section has on the casing, the left end of straight section of thick bamboo section with the connection can be dismantled to the oil content shell, the linkage segment that has smooth transition between straight section of thick bamboo section and the motor shell, integrative casting has the strengthening rib strip on the motor shell.

2. A lightweight compressor housing as set forth in claim 1, wherein: the bottom ends of the shell and the motor shell are positioned on the same horizontal plane.

3. A lightweight compressor housing as set forth in claim 2, wherein: the reinforcing ribs are recessed from the motor case outer surface toward the central axis, and the reinforcing ribs are raised from the motor case inner surface toward the central axis.

4. A lightweight compressor housing as set forth in claim 3, wherein: the reinforcing rib comprises an axial reinforcing rib which is axially arranged along the motor shell, and the axial reinforcing rib and the motor shell are integrally cast.

5. A lightweight compressor housing as set forth in claim 4, wherein: the axial strengthening ribs are arranged in a plurality of rows, and the axial strengthening ribs are distributed at equal intervals along the circumferential direction of the motor shell in sequence.

6. A lightweight compressor housing as set forth in claim 5, wherein: five axial reinforcing ribs are arranged.

7. A lightweight compressor housing as defined in any one of claims 3 to 5 wherein: the reinforcing ribs further comprise circumferential reinforcing ribs arranged along the circumferential direction of the motor shell, and the circumferential reinforcing ribs and the motor shell are integrally cast.

8. A lightweight compressor housing as set forth in claim 7, wherein: the annular reinforcing ribs are two, one is located at a position, close to the weight reducing surface, on the motor shell, and the other is located at a position, close to the end cover, on the motor shell.