CN107084112B

CN107084112B - Compressor with a compressor housing having a plurality of compressor blades

Info

Publication number: CN107084112B
Application number: CN201710142961.XA
Authority: CN
Inventors: 黄刚; 夏建军; 陈新杰
Original assignee: Anhui Meizhi Compressor Co Ltd
Current assignee: Anhui Meizhi Compressor Co Ltd
Priority date: 2017-03-10
Filing date: 2017-03-10
Publication date: 2020-11-24
Anticipated expiration: 2037-03-10
Also published as: CN107084112A

Abstract

The invention discloses a compressor, which comprises a shell, a motor part, a compression mechanism part and a limiting assembly, wherein the motor part is arranged in the shell, the compression mechanism part is arranged in the shell and is connected with the motor part, the compression mechanism part comprises a crankcase arranged above the motor part, one end of the limiting assembly is connected with the top wall in the shell, and the other end of the limiting assembly is connected with the crankcase to limit the movement of the crankcase. According to the compressor provided by the embodiment of the invention, the limiting component is arranged in the compressor, one end of the limiting component is connected with the top wall in the shell, and the other end of the limiting component is connected with the crankcase, so that the movement of the crankcase relative to the shell is limited by the limiting function of the limiting component, the probability of collision between the crankcase and the shell is effectively reduced, the running noise is reduced, and the running reliability of the compressor is improved.

Description

Compressor with a compressor housing having a plurality of compressor blades

Technical Field

The invention relates to the technical field of compressor manufacturing, in particular to a compressor.

Background

In the related art, the closed reciprocating piston compressor includes a compressor housing having a motor portion and a compression mechanism portion, and a support base is welded to a bottom of the compressor housing. The process of noise and vibration generation in the above-mentioned closed reciprocating piston compressor is as follows: after the compressor is powered on, the motor part inside the compressor casing starts to rotate, the motor part drives the compression mechanism part to work through operation, and the connecting rod of the compression mechanism part drives the piston to perform reciprocating linear motion through reciprocating rotation to perform a series of processes of sucking, compressing and discharging a refrigerant. In this process, because reciprocating inertia's existence, can drive the horizontal migration of crankcase, can arouse the collision of crankcase and casing for produce some pieces in the casing, and then cause the compressor stall, block the scheduling problem extremely, greatly reduced the reliability of compressor when the operation.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention provides the compressor which is simple in structure and convenient to manufacture, and can effectively reduce the possibility of collision between the crankcase and the shell, further reduce the generation of chips in the shell and improve the running reliability of the compressor.

The compressor according to the embodiment of the present invention includes: a housing; the motor part is arranged in the shell; the compression mechanism part is arranged in the shell and is connected with the motor part, and the compression mechanism part comprises a crankcase arranged above the motor part; and one end of the limiting assembly is connected with the inner top wall of the shell, and the other end of the limiting assembly is connected with the crankcase so as to limit the movement of the crankcase.

According to the compressor provided by the embodiment of the invention, the limiting component is arranged in the compressor, one end of the limiting component is connected with the top wall in the shell, and the other end of the limiting component is connected with the crankcase, so that the movement of the crankcase relative to the shell is limited by the limiting function of the limiting component, the probability of collision between the crankcase and the shell is effectively reduced, the running noise is reduced, and the running reliability of the compressor is improved.

In addition, the compressor according to the embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, the stop assembly comprises: the fixing piece is arranged on the inner top wall of the shell; the movable piece is arranged on one side, facing the top wall of the shell, of the crankcase and can move relative to the fixed piece.

According to one embodiment of the invention, the movable part is provided with a limiting part connected with the fixed part.

According to an embodiment of the invention, the limiting portion forms a groove recessed in a direction away from the fixing member along an axial direction of the housing, and at least a part of the fixing member is disposed in the groove.

According to one embodiment of the invention, the movable member has a fixed end and a free end, the fixed end is connected with the crankcase, and the free end is provided with the limiting portion.

According to one embodiment of the invention, the movable member is formed into a substantially spiral plate, and the outer end of the movable member is connected to the crankcase, and the middle of the movable member is provided with the limit portion.

According to one embodiment of the invention, the stationary part and/or the movable part is/are coated with a damping layer.

According to one embodiment of the invention, the movable member comprises: the mounting plate is connected with the crankcase, and a mounting column extending along the axial direction of the shell is arranged on the mounting plate; and one end of the spring is sleeved on the mounting column, and the other end of the spring is connected with the fixing piece.

According to one embodiment of the invention, the movable member is fixed to the crankcase by means of bolts or rivets.

According to one embodiment of the invention, the fixing is a pin or an elastic element.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a compressor according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a compressor according to still another embodiment of the present invention;

fig. 3 is a sectional view of a compressor according to still another embodiment of the present invention.

Reference numerals:

100: a compressor;

10: a housing;

20: a limiting component;

21: a fixing member;

22: a movable member;

221: a free end; 2211: a limiting part;

222: a fixed end; 223: mounting a plate; 2231: mounting a column; 224: a spring;

30: a crankcase;

40: a motor section.

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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

First, a compressor 100 according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 3.

The compressor 100 according to the embodiment of the present invention includes a housing 10, a motor part 40, a compression mechanism part, and a limit assembly 20.

Specifically, the motor unit 40 is disposed in the casing 10, the compression mechanism unit is disposed in the casing 10 and connected to the motor unit 40, the compression mechanism unit includes a crankcase 30 disposed above the motor unit 40, one end of the stopper assembly 20 is connected to an inner top wall of the casing 10, and the other end of the stopper assembly 20 is connected to the crankcase 30 to restrict movement of the crankcase 30.

In other words, the compressor 100 is mainly composed of the casing 10, the motor part 40, the compression mechanism part, and the limiting assembly 20, and the casing 10 may be composed of an upper casing and a lower casing which are detachably coupled, and the upper casing is fastened to the lower casing to define a mounting cavity for accommodating the motor part 40, the compression mechanism part, the limiting assembly 20, and the like.

The motor portion 40 and the compression mechanism portion are both disposed in the mounting cavity, the compression mechanism portion includes a crankcase 30, the crankcase 30 and the motor portion 40 are distributed along the axial direction of the housing 10, where "axial direction" may refer to the up-down direction of the housing 10 as shown in fig. 1, that is, the crankcase 30 is disposed above the motor portion 40. The compression mechanism part also comprises a connecting rod, a piston, an air cylinder and other parts, the motor part 40 drives the connecting rod of the compression mechanism part to do reciprocating rotary motion by driving the crankshaft, and then indirectly drives the piston to do reciprocating linear motion along the axial direction of the air cylinder by connection, thereby realizing the processes of sucking, compressing, discharging and the like of the refrigerant.

Further, one end (the upper end shown in fig. 1) of the limiting assembly 20 is connected to the inner top wall of the upper housing, for example, the upper end of the limiting assembly 20 and the upper housing may be fixed by welding or other methods, so as to ensure the reliability of the connection therebetween. The other end (the lower end shown in fig. 1) of the limiting component 20 is connected to the crankcase 30, for example, the lower end of the limiting component 20 may be connected to the crankcase 30 by bolts or rivets, so that the relative movement between the casing 10 and the crankcase 30 is effectively reduced by the limiting function of the limiting component 20, the collision between the crankcase 30 and the casing 10 caused by the operation of the compressor 100 is reduced, the generation of debris is reduced, the problems of rotation blockage, seizure and the like caused by the debris during the operation of the compressor 100 are avoided, and the reliability of the use of the compressor 100 is improved.

Therefore, according to the compressor 100 of the embodiment of the invention, the limiting assembly 20 is arranged in the compressor 100, one end of the limiting assembly 20 is connected with the inner top wall of the shell 10, and the other end of the limiting assembly 20 is connected with the crankcase 30, so that the movement of the crankcase 30 relative to the shell 10 is limited by the limiting effect of the limiting assembly 20, the probability of collision between the crankcase 30 and the shell 10 is effectively reduced, the operation noise is reduced, and the operation reliability of the compressor 100 is improved.

The limiting assembly 20 includes a fixed member 21 and a movable member 22, the fixed member 21 is disposed on an inner top wall of the housing 10, the movable member 22 is disposed on a side of the crankcase 30 facing the top wall of the housing 10, and the movable member 22 is movable relative to the fixed member 21.

For example, the fixed member 21 and the inner top wall of the upper housing may be connected by welding to ensure the reliability of the connection therebetween, the movable member 22 is disposed at the upper end of the crankcase 30 (i.e., a side of the crankcase 30 facing the inner top wall of the upper housing), and the movable member 22 may move in a horizontal direction relative to the fixed member 21, so that the reciprocating inertia force generated by the operation of the compressor 100 is effectively buffered by the cooperation of the fixed member 21 and the movable member 22, the horizontal movement of the crankcase 30 is reduced, and the collision between the crankcase 30 and the housing 10 is prevented.

Some specific embodiments of compressor 100 are described below with reference to fig. 1.

As shown in fig. 1, the compressor 100 includes: the shell 10, the spacing subassembly 20, the compression mechanism portion, the motor portion 40.

The housing 10 includes a lower housing having an open upper end and an upper housing having an open lower end, the upper and lower housings are arranged in an up-down direction, and the upper housing is fastened above the lower housing to define a mounting cavity.

The compression mechanism portion includes a crankcase 30, a crankshaft, a connecting rod, a piston, and a cylinder, and the crankcase 30 is provided above the motor portion 40. The crankshaft is installed in the crankcase 30 and connected to the motor portion 40, the cylinder is provided on the crankcase 30, and one end of the connecting rod is connected to the crankshaft and the other end thereof is connected to the piston to drive the piston to reciprocate in the cylinder.

The spacing subassembly 20 includes: a fixed member 21 and a movable member 22, wherein the fixed member 21 extends along the axial direction of the housing 10, and the "axial direction" herein may refer to the up-down direction as shown in fig. 1, and the upper end of the fixed member 21 is connected to the inner top wall of the housing. The movable member 22 is provided on a side of the crankcase 30 facing the top wall of the housing 10. The movable member 22 is movably connected to the fixed member 21 to limit the movement of the movable member 22 within a certain range, so that the movement of the crankcase 30 is effectively limited within a certain range, and the collision between the crankcase 30 and the housing 10 is reduced.

In some examples, the movable member 22 is provided with a stopper 2211 connected to the fixed member 21. Referring to fig. 1, the position of the position-limiting portion 2211 on the movable element 22 corresponds to the position of the fixed element 21 on the inner top wall of the housing 10, and the movable element 22 limits the fixed element 21 through the position-limiting portion 2211, so that the reciprocating inertia force generated by the operation of the compressor 100 is effectively buffered, and the horizontal movement of the crankcase 30 is reduced.

In some specific examples, the stopper portion 2211 forms a groove recessed in a direction away from the fixing member 21 in the axial direction of the housing 10, and at least a part of the fixing member 21 is provided in the groove.

Specifically, as shown in fig. 1, the stopper portion 2211 is formed as a groove recessed downward (i.e., in a direction away from the fixing member 21) in the axial direction (the up-down direction shown in fig. 1) of the housing 10, the upper side of the groove is open, and the lower side thereof is closed, the cross-sectional shape of the groove may correspond to the shape of one end of the fixing member 21 adjacent to the groove, and the size of the groove is slightly larger than the size of one end of the fixing member 21 adjacent to the groove.

The lower end of the fixing member 21 is inserted into the groove, and when the crankcase 30 moves horizontally relative to the housing 10, the crankcase 30 drives the movable member 22 to move, so that the groove on the movable member 22 and the lower end of the fixing member 21 generate an acting force, thereby reducing the horizontal movement and avoiding the collision between the crankcase 30 and the housing 10.

Alternatively, the groove may be formed as a cylindrical groove, and the fixing member 21 may be formed as a tapered pillar that gradually tapers in axial section, and the inner diameter of the cylindrical groove is larger than the minimum diameter of the tapered pillar. Of course, the groove may also form a through groove that penetrates the movable piece 22 in the up-down direction.

In some examples, the movable member 22 has a fixed end 222 and a free end 221, the fixed end 222 is connected to the crankcase 30, and the free end 221 is provided with a limit portion 2211. As shown in fig. 1, the fixed end 222 is connected to the crankcase 30 by a bolt to fix the movable member 22 integrally, and the free end 221 is provided with a stopper 2211.

When the compressor 100 operates, due to the action of the inertia force, the crankcase 30 may generate a horizontal displacement relative to the housing 10, and further drives the movable member 22 to move, and the fixed end 222 and the limiting portion 2211 cooperate to generate an acting force opposite to the moving direction of the crankcase 30, so as to reduce the probability of collision between the crankcase 30 and the housing 10, and meanwhile, under the combined action of the crankcase 30 and the fixing member 21, the free end 221 may also generate a certain relative movement relative to the fixed end 222 to buffer the inertia force during the operation of the compressor 100, so as to effectively reduce the stress of the limiting assembly 20, and prolong the service life of the components.

In some embodiments, the movable member 22 is formed as a substantially helical plate, the outer end of the movable member 22 is connected to the crankcase 30, and the stopper 2211 is disposed in the middle of the movable member 22. Referring to fig. 1, a concave groove is formed in the middle of the spiral plate, and the outer end of the spiral plate is fixedly connected to the crankcase 30 through a bolt, so that the spiral structure of the movable member 22 is utilized to achieve the effects of limiting and buffering stress.

In some preferred examples, the stationary member 21 and/or the moveable member 22 are coated with a damping layer. For example, the damping layer may be a layer of rubber material. The damping layer is respectively coated on the fixed part 21 and the movable part 22 or simultaneously coated on the fixed part 21 and the movable part 22, so that the damping characteristic of the damping material is utilized, the noise generated by collision in the matching process of the movable part 22 and the fixed part 21 is effectively reduced, and meanwhile, the high temperature resistance and the corrosion resistance of the damping material can be utilized, and the service life of the part is prolonged.

Further embodiments of compressor 100 are described below with reference to fig. 2 and 3.

As shown in fig. 2 and 3, the compressor 100 includes: the shell 10, the spacing subassembly 20, the compression mechanism portion, the motor portion 40. The stop assembly 20 includes a stationary member 21 and a movable member 22. The movable member 22 includes a mounting plate 223 and a spring 224, the mounting plate 223 is connected to the crankcase 30, for example, the mounting plate 223 and the crankcase 30 may be connected by bolts or the like. The mounting plate 223 is provided with a mounting post 2231 extending in the axial direction of the housing 10, where the "axial direction" may be the up-down direction as shown in fig. 2 and 3. One end of the spring 224 is fitted over the mounting post 2231 and the other end is connected to the mount 21.

In some examples, the fixing member 21 forms a cylindrical body extending in the axial direction of the housing 10, for example, a pin or a cylindrical elastic element. The two ends of the spring 224 are respectively sleeved on the mounting post 2231 and the fixing member 21.

When the compressor 100 operates, the crankcase 30 drives the mounting post 2231 to generate horizontal displacement, the mounting post 2231 drives the spring 224 sleeved on the mounting post to move, and the other end of the spring 224 is connected with the fixing member 21, so as to limit the relative displacement between the fixing member 21 and the mounting post 2231, and further limit the relative displacement between the shell 10 and the crankcase 30, and reduce the possibility of collision between the two due to the horizontal displacement, and further limit the position through the spring 224, and also can buffer the inertia force of the compressor 100 during the operation process, thereby effectively reducing the stress of the limiting component 20 and prolonging the service life of the components.

In some embodiments, the moveable member 22 is secured to the crankcase 30 by bolting or riveting. For example, the movable member 22 may be bolted to the crankcase 30 (as shown in fig. 1 and 2), riveted, or the like, so as to ensure the reliability of the connection between the movable member 22 and the crankcase 30. The manner of connection between the moveable member 22 and the crankcase 30 can be selected by one skilled in the art based on the actual design requirements.

Optionally, the fixing member 21 is a pin or an elastic member.

Referring to fig. 2 and 3, in the present embodiment, the fixing element 21 is formed as a pin extending along the axial direction of the housing 10, so as to achieve the limiting effect when the crankcase 30 moves horizontally relative to the housing 10 through the cooperation of the pin and the movable element 22, and of course, the fixing element 21 may also be formed as a cylindrical elastic element, so as to further improve the buffering effect of the limiting assembly 20 on the reciprocating inertia force during the operation of the compressor 100 while ensuring the limiting effect between the crankcase 30 and the housing 10.

Other constructions and operations of the compressor 100 according to the embodiment of the present invention will be known to those skilled in the art and will not be described in detail herein.

In the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the positional or orientational relationships indicated in the drawings to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A compressor, comprising:

a housing;

the motor part is arranged in the shell;

the compression mechanism part is arranged in the shell and is connected with the motor part, and the compression mechanism part comprises a crankcase arranged above the motor part;

spacing subassembly, the one end of spacing subassembly with roof links to each other in the casing, the other end of spacing subassembly with the crankcase links to each other in order to restrict the removal of crankcase, spacing subassembly includes:

the fixing piece is arranged on the inner top wall of the shell;

the movable piece is arranged on one side, facing the top wall of the shell, of the crankcase and can move relative to the fixed piece, a limiting portion connected with the fixed piece is arranged on the movable piece, the movable piece approximately forms a spiral plate, the outer end of the movable piece is connected with the crankcase, and the limiting portion is arranged in the middle of the movable piece;

and the fixed piece and/or the movable piece are/is coated with a damping layer.

2. The compressor of claim 1, wherein the stopper portion forms a groove recessed in an axial direction of the housing in a direction away from the fixing member, and at least a part of the fixing member is disposed in the groove.

3. The compressor of claim 1, wherein the movable member has a fixed end and a free end, the fixed end is connected to the crankcase, and the free end is provided with the stopper portion.

4. The compressor of claim 1, wherein the movable member is fixed to the crankcase by a bolt or a rivet.

5. The compressor of claim 1, wherein the fixing member is a pin or an elastic member.