CN205714666U - Hermetic compressor and hermetic compressor suspension assembly - Google Patents

Abstract

A hermetic compressor and hermetic compressor suspension assembly. In particular, a hermetic compressor (10) is described comprising a stator (12) fixed to a cylinder (11), the hermetic compressor (10) comprising three suspension points distributed on the periphery of the stator (12) (13), each suspension point (13) has a closed compressor suspension assembly consisting of a suspension spring (30), the suspension spring including a first end (31) coupled to a fixed element (23) and connected to a support element ( The second end (32) of 24), the fixing element (23) and the supporting element (24) are longitudinally aligned in the suspension spring (30). Also described is a hermetic compressor suspension assembly comprising a suspension spring (30) comprising a first end (31) coupled to a fixed element (23) and a second end (32) connected to a support element (24) ), the fixing element (23) and the supporting element (24) are longitudinally aligned in the suspension spring (30).

Description

Hermetic compressors and hermetic compressor suspension components

technical field

The utility model relates to a hermetic compressor and a suspension assembly of the hermetic compressor. The hermetic compressor includes a suspension assembly fixed to only three fixed points. The suspension assembly of the hermetic compressor is especially centered and in Each of the three fixed points is formed by rigid suspension springs.

Background technique

In order to damp vibrations caused by the operation of the compressor, a suspension system is coupled to said compressor. The suspension system is essentially a suspension spring fixed to the compressor stator, thereby reducing noise and vibration.

For better stability, most mechanical structures require an even number of support points. Thus in conventional compressors the structure is supported by four points of support, where the cylinder block and the stator of the electric motor are fixed by four fixed elements distributed around the stator geometry to form a suspension system, suspension springs are fastened to each stationary element, therefore, due to the number of parts to assemble the compressor, manufacturing costs are very high, increasing the cost of the final product.

These existing solutions require an increase in the number of parts to assemble the hermetic compressor, and this fact implies high manufacturing costs, moreover, the compressor assembly process is more difficult and requires more processing time on the assembly line.

However, the goal of the compressor industry is to develop its technology such that the final product exhibits good quality, good efficiency and mainly low manufacturing costs, to achieve this some solutions aim at reducing the number of integrated compressor components, Modify part associations or part connections for different parts of the product.

Utility model content

It is an object of the present invention to provide a hermetic compressor comprising three fixed points, wherein a hermetic compressor suspension assembly is fixed at each of these fixed points, inhibiting the use of the suspension assembly and resulting in a compressor with less few parts.

Another object of the present invention is to provide a hermetic compressor suspension assembly that includes suspension springs that are centered and rigidly secured at each of three fixed points.

Description of drawings

The utility model proposes the following drawings in order to define exemplary embodiments of the hermetic compressor suspension assembly and the hermetic compressor, but does not limit the scope of protection.

Fig. 1 shows the top perspective view of the hermetic compressor according to the utility model;

Figure 2 shows a bottom perspective view of a hermetic compressor having three fixed points, wherein a hermetic compressor suspension assembly is fixed at each of these fixed points;

Fig. 3 shows an exploded view of the hermetic compressor suspension assembly according to the present invention;

Fig. 4 shows the first view of the hermetic compressor suspension assembly according to the present invention;

Figure 5 shows a second view of the hermetic compressor suspension assembly according to the present invention; and

Fig. 6 shows a detailed view of the hermetic compressor suspension assembly according to the present invention.

detailed description

The present invention provides an advantageous alternative to the suspension assembly of hermetic compressors, resulting in reduced manufacturing costs and reduced compressor assembly time. To achieve this, the number of parts related to the prior art is reduced due to the hermetic compressor suspension assembly and the number of fixing points in the compressor.

Thus, as can be seen in Figure 1, the invention proposes a hermetic compressor 10 comprising a compression chamber formed by a cylinder head 101 fixed to a cylinder 11, wherein the fixation between the two elements is achieved by Realized by conventional screws. In one embodiment, the compression chamber is formed by a valve plate (not shown) which allows the intake and compression cycle of the compressor, wherein the compression chamber is covered by the cylinder head 101 . The cylinder 11 has a hollow inner part allowing the insertion of the piston 112 and in the same embodiment is a conventional cylinder as used in conventional hermetic compressors.

During the operation of the compressor, the piston 112 works inside the cylinder 11 to perform compression and intake movement, so that in the compression cycle, the piston 112 moves from the bottom dead center to the top dead center, that is, moves in the direction of the compression chamber, and In the gas cycle, the piston 112 moves from the top dead center to the bottom dead center, that is, it moves in the opposite direction of the compression chamber.

For the operation of the piston 112, an electric motor (not shown) is used, the electric motor consists of a rotor, i.e. a rotating element, which allows the rotation caused by the change of the magnetic field, and which furthermore comprises a stator 12, which is responsible for holding the bobbin 121 (Fig. 2), the bobbin 121 generates a magnetic field to move the rotor inside the stator 12 when excited by a current. Thus, the rotor is connected to the piston 112 and when the bobbin 121 in the stator 12 is energized by an electric current, the rotor moves the piston 112 in the cylinder 11 in rotation.

To assemble the hermetic compressor, the stator 12 is fixed to the cylinder 11 and the suspension point 13 with the hermetic compressor suspension assembly is fixed to the stator 12 . Precisely, the suspension point 13 is located in the bottom surface 122 of the stator 12 , wherein the hermetic compressor suspension assembly is fixed by fixing elements 23 with the purpose of damping vibrations during operation of the compressor.

As shown in FIG. 2 , the hermetic compressor 10 of the present invention only includes three suspension points 13 , and the three suspension points are distributed around the stator 12 at the same or different distances from each other according to the center of mass of the compressor. Thus, the force is evenly distributed at each suspension point 13 .

Another advantage of the hermetic compressor 10 is the number of parts. With only three suspension points 13, the cost of manufacturing and assembling the hermetic compressor 10 as well as its weight is reduced because at least one spring, screws and many fittings are Not required.

The hermetic compressor suspension assembly according to another object of the present invention is fixed at each of the fixed points 13 of the hermetic compressor 10 by a fixing element 23 having a The main body portion 231 and the head portion 232 are docked in the insert 40 by an interference fit ( FIG. 3 ). The fixing element 23 can be a screw.

As shown by FIGS. 3 to 6 , the hermetic compressor suspension assembly includes a suspension spring 30 having a first end 31 coupled to the securing member 23 and a second end 32 engaging the support member 24 . The fixing element 23 and the supporting element 24 are aligned longitudinally within the suspension spring 30 .

The insert 40 is connected to the first end 31 of the suspension spring 30 by means of an interference fit, while the insert 40 receives the head 232 of the fixing element 23 received axially in the insert 40 . More specifically, the insert 40 has a hollow 401 in which the head 232 of the fixing element 23 is housed. Said hollow 401 is concentric with the insert 40 and thus, when the fixing element 23 is housed in the insert 40 , it is concentric with the insert 40 and with the suspension spring 30 .

The hermetic compressor suspension assembly also includes a centering pin 25 coupled axially to the support member 24 to keep the suspension assembly centered in use. The centering pin 25 is housed in a cavity 241 in the support element 24 .

The cavity 241 and the centering pin 25 are concentric with each other and with the suspension spring 30 .

The hermetic compressor suspension assembly is assembled and further connected to the fixed point 13 around the stator 12, that is to say the insert 40 is fixed axially by an interference fit to the suspension spring 30 and the suspension spring 30 is pivoted by the centering pin 25 connected to the support element 24. Furthermore, the suspension spring 20 is coupled to the fixing element 23 by an interference fit of the head 232 of the fixing element 23 with the insert 40 and the hermetic compressor suspension assembly is then fixed at the fixing point 13 .

The hermetic compressor 10 vibrates in use, and the vibrations are at least partially damped by the hermetic compressor suspension assembly. The connection of the fixing member 23 to the suspension spring 30 holds the hermetic compressor suspension assembly together with the compressor 10, and the centering pin 25 is provided when the hermetic compressor suspension assembly contacts the surface of the compressor casing (not shown). The support 24 is responsible for maintaining the hermetic compressor suspension assembly centered relative to the fixed element 23 and normal to the bottom surface 122 of the stator 12 .

Claims (9)

1. hermetic compressor (10), including being fixed to the stator (12) of cylinder body (11), the feature of this hermetic compressor (10) Being, they three hitch points (13) including being distributed in this stator (12) periphery, each hitch point (13) has closed compression Machine suspension assembly, described hermetic compressor suspension assembly is made up of pendulum spring (30), and pendulum spring includes being connected to fix First end (31) of element (23) and be connected to second end (32) of support component (24), this retaining element (23) and support component (24) longitudinally-aligned in pendulum spring (30).

Hermetic compressor the most according to claim 1, it is characterised in that three hitch points (13) are according to power distribution and pressure The barycenter of contracting machine is distributed in the periphery of stator (12).

Hermetic compressor the most according to claim 1, it is characterised in that retaining element (23) has in hitch point (13) Main part (231) that place is connected to stator (12) and the head (232) being contained in insert (40) by interference fit.

Hermetic compressor the most according to claim 1, it is characterised in that retaining element (23) can be screw.

5. hermetic compressor suspension assembly, it is characterised in that include pendulum spring (30), pendulum spring has and is connected to fix First end (31) of element (23) and be connected to second end (32) of support component (24), this retaining element (23) and support component (24) longitudinally-aligned in pendulum spring (30).

Hermetic compressor suspension assembly the most according to claim 5, it is characterised in that insert (40) is joined by interference Conjunction is connected to described first end (31) of described pendulum spring (30), and described insert (40) receives and is axially received in insert (40) head (232) of the described retaining element (23) in.

Hermetic compressor suspension assembly the most according to claim 6, it is characterised in that the head of described retaining element (23) Portion (232) is contained in the hollow bulb (401) of insert (40), and described hollow bulb (401) is concentric with insert (40).

Hermetic compressor suspension assembly the most according to claim 5, it is characterised in that centring pin (25) axially couples To support component (24), to keep suspension assembly centering in use.

Hermetic compressor suspension assembly the most according to claim 8, it is characterised in that described centring pin (25) is received In chamber (241) in support component (24), described chamber (241) and described centring pin (25) are concentrically with respect to one another.