KR20060091644A - Supporting spring mounting for linear compressor - Google Patents

Abstract

The present invention relates to a spring installation structure for the support of a linear compressor for elastically supporting a cylinder and a piston and a linear motor inside the shell, and in particular, a shell having a sealed space formed therein, and positioned inside the shell to be located inside the cylinder. The piston sucks and compresses the refrigerant while reciprocating linearly, and then discharges the main body, a pair of upper support parts provided to protrude on both sides of the lower part of the body, and a pair of lower support parts protruded on both sides of the inner bottom surface of the shell. And a pair of support springs, each of which is seated on the upper and lower support parts to cushion longitudinal vibrations, wherein the support springs have a vertical surface so as to cushion the lateral vibrations. Since it is installed to be inclined at a predetermined angle, even if various vibrations are generated, the vibrations Well it is possible to reduce the transfer.

Linear compressor, shell, body, cylinder, piston, linear motor, support spring, support

Description

Spring Mounting Structure for Supporting Linear Compressor {SUPPORTING SPRING MOUNTING FOR LINEAR COMPRESSOR}

1 is a front sectional view showing a linear compressor to which a spring mounting structure for supporting according to the prior art is applied;

2 is a front sectional view showing a linear compressor to which a first embodiment of a supporting spring mounting structure according to the present invention is applied;

3 is a front sectional view showing a linear compressor to which a second embodiment of a supporting spring mounting structure according to the present invention is applied.

<Explanation of symbols on main parts of the drawings>

52: shell 54: the body

62a, 62b: upper supports 64a, 64b: lower supports

66a, 66b: support springs

The present invention relates to a spring installation structure for a linear compressor for elastically supporting a main body consisting of a cylinder, a piston, and a linear motor in a shell, and in particular, a linear compressor capable of stably supporting the main body even when the main body is vibrated in the longitudinal and transverse directions. It relates to a spring mounting structure for the support.

In general, a compressor is a mechanical device that increases pressure by receiving power from a power generator such as an electric motor or a turbine to compress air, refrigerant, or various other working gases. It is widely used throughout.

These compressors are classified into a reciprocating compressor which compresses the refrigerant while linearly reciprocating the inside of the cylinder by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder. And a rotary compressor for compressing the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder to form a compression space in which the working gas is sucked and discharged between the eccentrically rotating roller and the cylinder. As a scroll compressor that compresses the refrigerant while the rotating scroll rotates along the fixed scroll to form a compression space in which the working gas is absorbed and discharged between the orbiting scroll and the fixed scroll. Divided.

Recently, among the reciprocating compressors, in particular, the piston is directly connected to the reciprocating linear motion drive motor, so that there is no mechanical loss due to the movement conversion to improve the compression efficiency as well as many simple linear compressors have been developed.

Normally, a linear compressor is configured to suck and compress refrigerant and then discharge the refrigerant while the piston is moved reciprocally linearly in the cylinder by the linear motor inside the closed shell, the linear motor being permanent between the inner and outer stators. The magnets are positioned so that the permanent magnets are linearly reciprocated by mutual electromagnetic forces. As the permanent magnets are driven in connection with the pistons, the pistons reciprocate linearly inside the cylinders to inhale and compress the refrigerant, and then discharge them. To do that.

1 is a front sectional view showing a linear compressor to which a spring mounting structure for supporting according to the prior art is applied.

In the linear compressor according to the related art, as shown in FIG. 1, the upper shell 2b is coupled to the upper side of the lower shell 2a to form a shell 2 having a sealed space therein, and the inside of the shell 2. The main body 4 consisting of a cylinder (not shown), a piston (not shown) and a linear motor (not shown) is installed to elastically support in the longitudinal direction by a plurality of support springs (16a, 16b), A pair of springs 16a and 16b protruded on both sides of the lower support part 12a and 12b installed to protrude on both sides of the lower part of the main body 4 and on a flat bottom surface B inside the shell 2. It is installed to be vertically supported between the lower support portions (14a, 14b).

Here, the shell 2 is formed in a cylindrical sealed space in the axial direction so that the main body 4 can be installed therein, even if the main body 4 is vibrated in the longitudinal or transverse direction It is installed at a predetermined distance from the inner wall of the shell 2 so as not to directly hit the (2), the bottom surface (B) is formed horizontally.

Next, the main body 4 is installed to be fixed by various frames and covers so as to be installed to be reciprocally linearly moved by the linear motor in a state where one end of the piston is inserted into the cylinder, and is arranged in the axial direction as a whole. It is formed into a cylindrical shape.

Next, the upper support parts 12a and 12b are not only provided with a pair on both sides of the lower part of the main body 4 but also provided with a pair so as to be located in the axial direction, and the lower support parts 14a and 14b are also provided. Four are installed on the bottom surface B of the shell at positions opposite to the upper support portions 12a and 12b, and the spacing D1 between the upper support portions and the distance D2 between the lower support portions are Since the upper support parts 12a and 12b and the lower support parts 14a and 14b are formed to be identical to each other, they are positioned on the same axis perpendicular to each other.

Next, the support springs 16a and 16b are used as a kind of coil spring to cushion longitudinal vibration, and the upper and lower ends are fitted to the upper and lower support parts 12a, 12b, 14a and 14b, respectively. It is also installed so as to be vertically arranged so as to vertically support the main body (4).

Of course, the support springs 16a and 16b are installed so as to elastically support the main body 4 in some transverse direction as the coil spring is used even though the support springs 16a and 16b are arranged vertically.

Therefore, the piston is driven by the linear motor, and the refrigerant is sucked and compressed while reciprocating linearly in the axial direction, and then the ejecting process is repeated, even if vibration occurs in the entire body 4 during such a process. As the main body 4 is elastically supported by the supporting springs 16a and 16b, vibration is absorbed by the supporting springs 16a and 16b so that the main body 4 is connected to the shell 2. It can be prevented from hitting directly.

However, the support spring mounting structure of the linear compressor according to the prior art supports the main body 4 inside the shell 2 so that a plurality of support springs 16a and 16b, which are a kind of coil springs, are vertically supported. While the springs 16a and 16b have a relatively large longitudinal modulus of elasticity, the transverse elastic modulus is relatively small, so that the support spring 16a is excessively vibrated in the longitudinal / lateral direction as the main body 4 is eccentric. 16b) can dampen the longitudinal vibrations, while the main body 4 hits the shell 2 to generate noise or damage components, as well as the longitudinal vibrations. There is a problem that reduces the operation reliability of.

The present invention has been made to solve the above-mentioned problems of the prior art, the support spring of the linear compressor that can cushion the vibration acting in various directions by elastically supporting the main body to be inclined at a predetermined angle with respect to the vertical surface inside the shell The purpose is to provide an installation structure.

Spring support structure of the linear compressor according to the present invention for solving the above problems is a shell formed in the closed space, and the inside of the shell is a piston inside the cylinder to reciprocate linear movement to suck the refrigerant to compress Next, the main body for discharging, a pair of upper support parts protruding on both sides of the lower part of the main body, a pair of lower support parts protruding on both sides of the inner bottom surface of the shell, and the upper support parts and the lower support parts, respectively, It is composed of a pair of support springs which are seated on the upper and lower ends to cushion longitudinal vibrations, and the support springs are inclined at a predetermined angle with respect to the vertical surface so as to cushion the transverse vibrations.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a front sectional view showing a linear compressor to which the first embodiment of the supporting spring mounting structure according to the present invention is applied.

In the linear compressor to which the first embodiment of the supporting spring mounting structure according to the present invention is applied, the upper shell 52b is coupled to the upper side of the lower shell 52a, and the cylinder is formed inside the shell having a sealed space therein. (Not shown), the body 54 consisting of a piston (not shown) and a linear motor (not shown) is installed to elastically support in the longitudinal and transverse directions by a plurality of support springs (66a, 66b), (54) A pair of lower supports 64a, 64b provided on both sides of the flat bottom surface B inside the shell 52 with a gap D1 between the pair of upper supports 62a, 62b provided on both lower sides thereof. It is formed narrower than the gap D2 therebetween, and the support springs 66a and 66b are installed between the upper support portions 62a and 62b and the lower support portions 64a and 64b with respect to the vertical plane. It is installed to be inclined.

Here, since the shell 52 and the main body 54 are formed in the same manner as the conventional components, detailed description thereof will be omitted.

In particular, the upper support (62a, 62b) is not only a pair is located on both sides of the lower portion of the main body 54, but four are installed so that the pair is also located in the axial direction, the lower support (64a, 64b) is also the shell Four are installed on the bottom surface (B) of the position opposite to the upper support (62a, 62b), the spacing (D1) between the upper support is arranged to be narrower than the spacing (D2) between the lower support Thus, the upper support parts 62a and 62b and the lower support parts 64a and 64b are installed to be positioned on an axis inclined at a predetermined angle with respect to the vertical plane.

At this time, even if the lower surface of the body 54 and / or the bottom surface of the shell 52 is formed to be bent, the upper support parts 62a and 62b and the lower support parts 64a and 64b may be deformed or separate members. In addition, the ends of the main body 54 and the bottom surface of the shell 52 are vertically protruded so that their ends are horizontal, respectively, and the upper support parts 62a and 62b and the lower support parts 64a and 64b It is formed stepped so that both ends of the support springs (66a, 66b) can be fitted at the end.

Of course, the support springs 66a and 66b have a relatively narrower spacing D1 between the upper supporters than the spacing D2 between the lower supporters, so that the lateral vibration of the main body 54 is increased. Can buffer more.

However, as the main body 54 usually generates more longitudinal vibration than lateral vibration, the supporting springs 66a and 66b are formed between the gap D1 between the upper support portions and the lower support portions. By adjusting the distance (D2) to be installed to be inclined at about 1 to 10 degrees with respect to the vertical plane to cushion the most generated longitudinal vibration at the same time to effectively absorb some generated lateral vibration.

Next, the supporting springs 66a and 66b are vertically formed by a kind of coil spring, the upper end of which is fitted to the upper support parts 62a and 62b, and the lower end of which is fitted to the lower support parts 64a and 64b. Since the supporting springs 66a and 66b are installed so as to be inclined in the transverse direction from the upper end to the lower end, the supporting springs 66a and 66b are deformed.

Thus, the piston is driven by the linear motor to inhale and compress the refrigerant while reciprocating linear movement in the axial direction, and then to discharge, it is repeated, the longitudinal and transverse to the entire body 54 during this process Even if directional vibration occurs, vibration is applied to the support springs 66a and 66b as the main body 54 is elastically supported by the support springs 66a and 66b arranged to be inclined at a predetermined angle with respect to the vertical plane. Since it is absorbed, the main body 54 can be prevented from directly hitting the shell 52.

3 is a front sectional view showing a linear compressor to which a second embodiment of a supporting spring mounting structure according to the present invention is applied.

The linear compressor to which the second embodiment of the supporting spring mounting structure according to the present invention is applied is configured in the same manner as the first embodiment as shown in FIG. 3, and a pair of upper support parts installed on both sides of the lower part of the main body 54. The gap D1 between the 72a and 72b is formed to be narrower than the gap D2 between the pair of lower support portions 74a and 74b provided on both sides of the flat bottom surface B inside the shell 52. The upper supports 72a, 72b and the lower supports 74a, 74b protrude so as to be inclined in opposite directions from the bottom surface of the main body 54 and the bottom of the shell 52, respectively, and the upper supports 72a, As support springs 76a and 76b are installed between 72b and lower support portions 74a and 74b, the support springs 76a and 76b are installed to be inclined with respect to the vertical plane.

In this case, the upper support parts 72a and 72b and the lower support parts 74a and 74b protrude so as to be inclined from the bottom surface of the main body 54 and the bottom surface of the shell 52, respectively, and the support springs therebetween. Since the 76a and 76b are installed, the supporting springs 76a and 76b are installed in a line on the inclined axis without being deformed.

Of course, even if the bottom of the body 54 and / or the bottom surface of the shell 52 is formed to be bent, the upper support (72a, 72b) and the lower support (74a, 74b) is the lower portion of the body 54 and the shell ( 52, protruded to be inclined from the bottom surface so that the ends thereof are opposed to the inclined coaxial, and the upper support parts 72a and 72b and the lower support parts 74a and 74b have the support springs at their ends. Both ends of 76a and 76b are formed to be stepped.

Similarly, it is preferable to adjust the spacing D1 between the upper support parts and the spacing D2 between the lower support parts so that the support springs 76a and 76b are inclined at 1 to 10 ° with respect to the vertical plane. Do.

The second embodiment configured as described above is also the same as the operation and effect of the first embodiment, and thus a detailed description thereof will be omitted.

In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

The support spring installation structure of the linear compressor according to the present invention configured as described above cushions both longitudinal vibration and transverse vibration of the support springs installed between the main body and the bottom surface of the shell to elastically support the main body in the shell. Since it is arranged to be inclined at a predetermined angle with respect to the vertical plane so that the coil spring having a smaller transverse elastic modulus than the longitudinal elastic modulus is applied as a support spring, it can be cushioned even if vibration is generated in various directions as it is installed obliquely. The main body can prevent the shell from colliding, and furthermore, it is possible to prevent noise and component damage due to the collision, as well as increase the operational reliability of the product.

Claims (4)

A shell having an enclosed space formed therein, A main body positioned inside the shell to inhale and compress the refrigerant while the piston reciprocates linearly inside the cylinder, and then discharges the refrigerant; A pair of upper support parts provided to protrude from both sides of the lower part of the main body, A pair of lower supports installed on both sides of the inner surface of the shell to protrude; The upper and lower support parts are respectively seated on the upper and lower ends, and consists of a pair of support springs to cushion longitudinal vibration, And the supporting springs are inclined at a predetermined angle with respect to the vertical surface to cushion the lateral vibrations. The method of claim 1, Spring installation structure for the support of the linear compressor, characterized in that the space between the upper support is installed to be narrower than the space between the lower support. The method of claim 2, And the upper and lower support parts are installed perpendicular to the bottom of the main body and the bottom surface of the shell, respectively. The method of claim 2, And the upper and lower support parts are installed so as to be inclined in opposite directions from the bottom of the main body and the bottom surface of the shell, respectively.

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