Linear compressor
阅读说明:本技术 线性压缩机 (Linear compressor ) 是由 韩聪 宋斌 朱万朋 高山 吴远刚 于 2019-09-29 设计创作,主要内容包括:本发明提供了一种线性压缩机,包括机壳;线性电机,其包括定子和动子;气缸,限定有用于压缩制冷剂的空间;活塞,在动子带动下沿线性电机的轴线方向作线性往复运动,以压缩气缸内的制冷剂;和至少一个弹簧质量减振模块,其包括连接于动子的弹性件和连接于弹性件的质量块,用于消减线性压缩机的轴向振动。本发明的线性压缩机可有效降低轴向振动,且结构简单可靠。(The invention provides a linear compressor, which comprises a shell; a linear motor including a stator and a mover; a cylinder defining a space for compressing a refrigerant; the piston is driven by the rotor to do linear reciprocating motion along the axis direction of the linear motor so as to compress a refrigerant in the cylinder; and at least one spring mass damping module including an elastic member coupled to the mover and a mass coupled to the elastic member, for damping axial vibration of the linear compressor. The linear compressor can effectively reduce axial vibration and has a simple and reliable structure.)
1. A linear compressor, characterized by comprising:
a housing;
the linear motor is arranged in the shell and comprises a stator and a rotor;
a cylinder disposed in the casing, defining a space for compressing a refrigerant;
the piston is driven by the rotor to do linear reciprocating motion along the axis direction of the linear motor so as to compress a refrigerant in the cylinder; and
at least one spring mass damping module including an elastic member connected to the mover and a mass connected to the elastic member, for damping axial vibration of the linear compressor.
2. Linear compressor according to claim 1,
the two ends of the elastic part in the length direction are respectively connected with the rotor and the mass block, and the connecting line of the two ends is not parallel to the axis direction of the linear motor.
3. Linear compressor according to claim 2,
the connecting line of the two ends of the elastic part in the length direction is vertical to the axis direction of the linear motor.
4. Linear compressor according to claim 1,
the elastic member is a plate-shaped structure made of an elastic material.
5. Linear compressor according to claim 1,
the elastic part is mounted on the rotor in a threaded connection manner; and is
The mass is mounted to the elastic member in a threaded connection.
6. Linear compressor according to claim 1,
the axial direction of the linear motor is parallel to the horizontal direction;
the stator comprises an inner stator and an outer stator which are cylindrical and coaxially arranged, the outer stator is positioned on the radial outer side of the inner stator, and an annular gap is formed between the outer stator and the inner stator;
the cylinder is positioned on one axial side of the stator;
the active cell includes annular magnet and active cell skeleton, annular magnet is located in the annular gap, the active cell skeleton is including being located stator axial opposite side and perpendicular to annular end plate portion of annular magnet axial with follow respectively the interior section of thick bamboo portion and the outer barrel portion that extend of the inside, outer periphery edge of annular end plate portion, interior section of thick bamboo portion is followed interior stator is inside to extend in order to connect in the piston, outer barrel portion connect in annular magnet.
7. Linear compressor according to claim 6,
the number of the spring mass vibration reduction modules is one, and the elastic piece is connected to the top of the inner periphery of the annular end plate part.
8. Linear compressor according to claim 6,
the number of the spring mass vibration reduction modules is one, and the elastic piece is connected to the top of the outer periphery of the annular end plate portion.
9. Linear compressor according to claim 6,
the spring mass vibration reduction modules are two in number, and the elastic pieces of the two are respectively connected to the top and the bottom of the outer periphery of the annular end plate part.
10. The linear compressor of claim 6, further comprising:
a mounting plate fixed in the housing, the annular end plate portion being located between the mounting plate and the inner stator; and
a plurality of first resonance springs and a plurality of second resonance springs all follow linear electric motor's axis direction extends, every first resonance spring both ends are fixed in respectively the mounting panel with annular end plate portion, every second resonance spring both ends are fixed in respectively annular end plate portion with the terminal surface of inner stator.
Technical Field
The invention relates to the technical field of compressors, in particular to a linear compressor.
Background
A damping spring is generally provided in the piston compressor between the bottom of the pump body and the bottom wall of the inner shell for absorbing the vibrations of the compressor.
The linear compressor is a piston type compressor to which a linear motor is applied, and the linear motor includes a stator and a mover that linearly reciprocates in an axial direction, which makes axial vibration of the linear compressor relatively large. Also, since the mover axial direction is generally parallel to the horizontal direction, this results in that the vertically extending damper springs do not have a large effect on absorbing axial vibration of the compressor.
Disclosure of Invention
An object of the present invention is to provide a linear compressor capable of effectively reducing axial vibration.
The invention further aims to reduce the axial vibration of the linear compressor and improve the reliability by using a simple and high-reliability structure.
In particular, the present invention provides a linear compressor comprising:
a housing;
the linear motor is arranged in the shell and comprises a stator and a rotor;
a cylinder disposed in the casing, defining a space for compressing a refrigerant;
the piston is driven by the rotor to do linear reciprocating motion along the axis direction of the linear motor so as to compress a refrigerant in the cylinder; and
and at least one spring mass damping module including an elastic member coupled to the mover and a mass member coupled to the elastic member, for damping axial vibration of the linear compressor.
Optionally, two ends of the elastic element in the length direction are respectively connected with the mover and the mass block, and a connection line of the two ends is not parallel to the axis direction of the linear motor.
Optionally, a line connecting two ends of the elastic member in the length direction is perpendicular to the axis direction of the linear motor.
Optionally, the resilient member is a plate-like structure made of a resilient material.
Optionally, the elastic member is mounted to the mover in a threaded manner; and the mass block is arranged on the elastic piece in a threaded connection mode.
Optionally, the axis direction of the linear motor is parallel to the horizontal direction; the stator comprises an inner stator and an outer stator which are cylindrical and coaxially arranged, the outer stator is positioned at the radial outer side of the inner stator, and an annular gap is formed between the outer stator and the inner stator; the cylinder is positioned at one axial side of the stator; the rotor comprises an annular magnet and a rotor framework, the annular magnet is positioned in the annular gap, the rotor framework comprises an annular end plate portion positioned on the other side of the axial direction of the stator and perpendicular to the axial direction of the annular magnet, an inner cylinder portion and an outer cylinder portion, the inner cylinder portion and the outer cylinder portion extend out of the inner periphery and the outer periphery of the annular end plate portion respectively, the inner cylinder portion extends from the inside of the inner stator to be connected to the piston, and the outer cylinder portion is connected to the.
Alternatively, the number of the spring-mass damper modules is one, and the elastic member is attached to the top of the inner periphery of the annular end plate portion.
Alternatively, the number of spring mass damping modules is one, and the elastic member is attached to the top of the outer periphery of the annular end plate portion.
Alternatively, the number of the spring mass damping modules is two, and the elastic members of the two are respectively connected to the top and bottom of the outer periphery of the annular end plate portion.
Optionally, the linear compressor further comprises: the mounting plate is fixed in the machine shell, and the annular end plate is positioned between the mounting plate and the inner stator; and a plurality of first resonant springs and a plurality of second resonant springs, all extend along linear electric motor's axis direction, every first resonant spring both ends are fixed in mounting panel and annular end board portion respectively, and every second resonant spring both ends are fixed in the terminal surface of annular end board portion and inner stator respectively.
The linear compressor is provided with a spring mass vibration reduction module on a rotor. In the reciprocating motion process of the rotor, the elastic part moves back and forth along with the rotor, and the mass block vibrates back and forth by taking the connection point of the elastic part and the rotor as the center due to inertia and elastic deformation of the elastic part. Therefore, the spring mass vibration reduction module changes the self-vibration characteristic of the compressor vibration system, increases the damping, absorbs the vibration energy and effectively reduces the axial vibration of the linear compressor.
Furthermore, in the linear compressor, the spring mass vibration reduction module has the advantages of simple and small structure, flexible installation position and convenient assembly, is suitable for being arranged in the linear compressor with compact structure, and does not interfere with the original structural design of the linear compressor. Moreover, the manufacturing cost is low, and the use reliability is high.
Furthermore, the number and the installation positions of the spring mass vibration attenuation modules are optimally designed, so that the vibration attenuation effect is optimal.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic sectional view of a linear compressor according to an embodiment of the present invention;
FIG. 2 is an exploded schematic view of the spring-mass damping module of FIG. 1;
fig. 3 is a schematic sectional view of a linear compressor according to another embodiment of the present invention;
fig. 4 is a schematic sectional view of a linear compressor according to still another embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic sectional view of a linear compressor according to one embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a linear compressor. The linear compressor may be applied to a vapor compression refrigeration cycle system, such as a refrigerator or freezer, for compressing a refrigerant.
A linear compressor of an embodiment of the present invention may generally include a
The
The
One or more spring
Fig. 2 is an exploded schematic view of the spring-
The connection line of the two ends of the
As shown in fig. 2, the
The embodiment of the invention is particularly suitable for reducing the axial vibration of the horizontal linear compressor. Figure 1 illustrates an alternative construction of a linear compressor of horizontal configuration.
As shown in fig. 1, the axial direction of the
As shown in fig. 1, a
Fig. 3 is a schematic sectional view of a linear compressor according to another embodiment of the present invention; fig. 4 is a schematic sectional view of a linear compressor according to still another embodiment of the present invention.
Fig. 1, 3 and 4 illustrate several preferred mounting positions of the spring-
In some embodiments, as shown in fig. 1, the number of spring-
In some embodiments, as shown in fig. 2, the number of spring-
In some embodiments, as shown in fig. 3, the number of spring-
In addition to the above three optimal setting schemes, other reasonable designs can be performed on the number and the installation positions of the spring
In the linear compressor of the embodiment of the invention, the spring mass
In some embodiments, as shown in fig. 1, the linear compressor further comprises a resonant system. Specifically, the mounting
The mounting
When the linear compressor is operated, the resonant spring, the
It is preferable that the number of the first
The embodiment shown in fig. 1 provides only two sets of resonant springs, and in some alternative embodiments, three or more sets of resonant springs may be provided.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
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