CN117006016A - compressor - Google Patents

Abstract

The present invention provides a compressor including a hermetically sealed housing and a drive unit disposed in the interior of the housing. At least one damping device for suppressing and limiting deflection of the drive unit is provided in the interior of the housing, the damping device is connected to the drive unit, the damping device has an inner surface facing the housing and a first contactable area at a certain distance therefrom, the housing including a second contactable area corresponding to the first contactable area of the damping device, the second contactable area including an inner surface and an outer surface, And the shape of the second contactable area of the housing matches the shape of the first contactable area of the damping device, wherein the first contactable area of the damping device at least includes an arc-shaped circumferential contactable area. area.

Description

compressor

Technical field

The present invention relates to a compressor, and more particularly, to a linear compressor that compresses refrigerant through linear reciprocating motion of a piston.

Background technique

Generally, a compressor is a device that receives power from a power generating device such as a motor or a turbine and compresses a working fluid such as air or refrigerant. Compressors have been widely used in entire industries or home appliances, especially vapor compression refrigeration cycles.

Recently, among reciprocating compressors, linear compressors that do not use a crankshaft but utilize linear reciprocating motion are increasingly used. As far as linear compressors are concerned, since there is less mechanical loss when converting rotary motion into linear reciprocating motion, it has the advantages of improving the efficiency of the compressor and having a simpler structure.

Normally, in order to avoid vibrations of the drive unit in the compressor in the vertical direction, the drive unit is usually connected at its bottom side to the bottom of the housing by a spring element for damping vibrations. At the same time, in the prior art, damping means are usually provided to prevent the drive unit from coming into contact with the top of the housing in this connection.

However, this is not sufficient for compressors used in automotive applications, for example for cooling applications in vehicles, since the drive unit of the compressor there moves in its housing during its operation, during acceleration and braking of the vehicle. The body undergoes acceleration and deceleration. In addition, when the vehicle goes up or downhill, the inclination of the running compressor will also change. In the above-mentioned situation, in the case of a refrigerant compressor comprising a hermetically sealed housing and a drive unit arranged in the interior of said housing, relatively large forces can occur, in particular during starting and stopping processes During this time, the force causes a corresponding relatively large horizontal deflection of the drive unit in the housing.

At the same time, the aforementioned spring element for suppressing the vibration of the drive unit in the vertical direction cannot suppress the deflection of the drive unit. In particular, in the case of a refrigerant compressor with a variable rotational speed or a refrigerant compressor with a constant but low speed, all components must be designed in a relatively soft manner due to the low rotational speeds occurring during operation. the spring element, which in turn leads to a greater deflection of the drive unit.

In addition, as far as linear compressors are concerned, the drive unit that provides rotational motion will cause the internal unit to tend to move in the rotation direction when the vehicle starts and stops, causing the damping device provided on the drive unit to continuously hit the housing, causing undesirable consequences. noise.

Therefore, there is an urgent need for an improved compressor to improve the above shortcomings.

Contents of the invention

It is therefore an object of the present invention to provide a compressor, in particular a linear refrigerant compressor, suitable for use in automotive applications. In particular, the compressor according to the invention is considered to prevent or at least minimize the development of disruptive noise or internal unit damage due to drive unit deflection in connection with acceleration, deceleration and incline of the vehicle in which said compressor is installed, and The problem arises from the occurrence of undesirable noise caused by the damping device provided on the drive unit of the compressor hitting the casing.

The main idea of the invention is to provide a further improved damping device and in this regard in particular to prevent deflection of the drive unit and to prevent undesirable noises due to the tendency of the compressor to rotate.

Specifically, in one aspect, the invention provides a compressor including a hermetically sealed housing and a drive unit disposed in an interior of the housing,

Wherein, at least one damping device for suppressing and limiting the deflection of the driving unit is provided in the interior of the housing, and the damping device is connected to the driving unit,

The damping device has a first contactable area facing the inner surface of the housing and at a certain distance therefrom,

The housing includes a second contactable area corresponding to the first contactable area of the damping device, the second contactable area including an inner surface and an outer surface, and the second contactable area of the housing has The shape matches the shape of the first contactable area of the damping device,

Wherein, the first contactable area of the damping device at least includes an arc-shaped, preferably arc-shaped, circumferential contactable area. This means that the entire circumferential contact area of the first contact area is arcuate, while other areas such as the upper side may have other shapes.

According to the present invention, in the basic state of the drive unit, a certain distance is maintained between the first contactable area of the damping device and the second contactable area of the housing. When the vehicle equipped with the compressor is accelerating, decelerating or driving on a slope, or otherwise causing the drive unit to deviate from its basic state, the first contactable area of the damping device will be in contact with the housing. Corresponding areas in the second contactable area are in contact, thereby inhibiting and limiting the deflection of the driving unit.

In the present invention, "matching" means that the surface form of the first contactable area of the damping device and the surface form of the associated second contactable area of the housing are the same. There is therefore at least a form-fitting state between the first contactable area of the damping device and the second contactable area of the housing. For example, if the surface form of the first contactable area of the damping device is planar, then the surface form of the related second contactable area of the housing is also planar. Or in another example, if the surface form of the first contactable area of the damping device has a certain curvature, then the surface form of the related second contactable area of the housing has the same curvature. Typically, the first contactable area of the damping device and the associated second contactable area of the housing are parallel in the basic state of the drive unit.

According to a preferred aspect of the invention, the compressor is a linear compressor. In the case of a linear compressor, the arrangement according to the invention avoids the occurrence of undesirable noise due to the tendency of the compressor to rotate during start/stop of the drive unit and when changes in rotational speed occur, where this effect occurs This arises in particular from the circular arc-shaped circumferential contact area arrangement of the first contact area of the damping device. This arc-shaped circumferential contact area allows the drive unit to have greater freedom of movement without touching the housing, that is, greater freedom of rotational movement (especially rotation in the horizontal plane) .

According to a preferred aspect of the present invention, the shape of the first contactable area of the damping device is one-eighth of the shape of the spherical surface.

According to a preferred aspect of the present invention, the first contactable area of the damping device includes at least an arc-shaped circumferential contactable area and a flat top surface contactable area. Preferably, the shape of the first contactable area of the damping device is a shape obtained by further flattening the upper surface based on the shape of one-eighth of the spherical surface. In other words, in this case, the arcuate circumferential contactable area is uniformly tapered toward the flat top surface contactable area. This means that all cross-sections of the damping device in the vertical direction are continuously differentiable, without steps or bends or edges.

According to a preferred aspect of the present invention, the arc-shaped circumferential contact area and the flat top surface contact area of the first contact area of the damping device are transitioned through a rounded structure.

According to a preferred aspect of the present invention, the arc-shaped circumferential contact area of the first contact area of the damping device transitions from adjacent areas at least in the circumferential direction through a rounded structure.

Through the rounded corner structure provided by the present invention, when the corresponding areas of the first contactable area of the damping device and the second contactable area of the housing contact each other, the contact area can be increased, and the contact area can be increased. The area can continuously change with changes in vibration, deflection and deflection, which improves the effect of suppressing and limiting the deflection of the drive unit, and reduces the possibility of noise and damage to the drive unit due to deflection.

According to a preferred aspect of the present invention, at least the inner surface and the outer surface of the second contactable area of the housing are parallel to each other. In other words, the housing is deformed in the second contactable area to conform to the shape of the first contactable area of the damping device, wherein the deformation keeps the thickness of the housing substantially unchanged, thereby making The inner surface and the outer surface of the second contactable area are substantially parallel to each other. Of course, the thickness may decrease due to deformation, especially in areas with high curvature, but this is still understood to mean that, according to the invention, the shell thickness remains essentially the same before and after deformation. Preferably, the second contactable area of the housing of the invention has a generally concave form relative to the other parts. Typically, the housing is produced from sheet metal by deep drawing or hydroforming.

According to a preferred aspect of the invention, the damping device has damping properties, preferably comprising or consisting of a polymer material. In this context, polymeric materials are understood to include elastic, damping-specific materials such as plastics, elastomers and rubbers produced from natural and/or synthetic materials.

According to a preferred aspect of the present invention, the compressor has at least 4 of the damping devices. The four damping devices are arranged at four end corners of the compressor, whereby each damping device spans an angle of approximately 90 degrees in the circumferential direction. Based on this arrangement, deflection of the compressor in any direction can be covered.

Description of the drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples. In the accompanying drawings:

Figure 1 is a top view of a compressor according to a preferred embodiment of the present invention, in which the upper casing is not shown;

Figure 2 is a perspective view of the compressor of a preferred embodiment shown in Figure 1, with the upper housing not shown;

Figure 3 is a perspective view of the compressor of a preferred embodiment shown in Figure 1, showing an upper housing;

Figure 4 is a top view of a compressor according to another preferred embodiment of the present invention, in which the upper casing is not shown;

Figure 5 is a perspective view of the compressor of another preferred embodiment shown in Figure 4, in which the upper casing is not shown;

Figure 6 is a perspective view of the compressor of another preferred embodiment shown in Figure 4, showing an upper housing;

Figure 7 is a top view of a compressor according to another preferred embodiment of the present invention, in which the upper casing is not shown;

Figure 8 is a perspective view of the compressor of another preferred embodiment shown in Figure 7, in which the upper casing is not shown;

Figure 9 is a perspective view of the compressor of yet another preferred embodiment shown in Figure 7, showing an upper housing;

FIG. 10 is a partial enlarged cross-sectional view of the first contactable area and the second contactable area in the circumferential direction of the damping device and the casing of the compressor of the present invention.

Detailed ways

Preferred embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and are not to be construed as limiting the present invention.

Referring first to Figures 1-3, a preferred embodiment of the compressor of the present invention is shown, wherein the compressor includes a hermetically sealed housing 1 and a drive unit disposed in the interior of the housing 2,

Wherein, at least one damping device 3 for suppressing and limiting the deflection of the driving unit 2 is provided inside the housing 1, and the damping device 3 is connected to the driving unit 2,

The damping device 3 has a first contactable area 4 facing the inner surface of the housing 1 and at a certain distance from it,

The housing 1 includes a second contactable area 5 corresponding to the first contactable area 4 of the damping device 3 , the second contactable area 5 includes an inner surface and an outer surface, and the housing 1 The shape of the second contactable area 5 matches the shape of the first contactable area 4 of the damping device 3,

The shape of the first contactable area 4 of the damping device 3 is one-eighth of the spherical surface, and the shape is regarded as a uniform arc shape as a whole.

With further reference to Figures 4-6, another preferred embodiment of the compressor of the present invention is shown, in which the first contactable area of the damping device at least includes an arc-shaped circumferential contactable area 6 and a flat The top surface of the contact area 7. In this preferred embodiment, the arcuate circumferential contactable area 6 is uniformly tapered toward the flat top surface contactable area 7 . In other words, in this preferred embodiment, the shape of the first contactable area of the damping device is a shape in which the upper surface is further flattened based on the shape of one-eighth of the spherical surface. In this case, it is obvious that this means that all cross-sections of the damping device in the vertical direction are continuously differentiable, without steps or bends or edges.

Further preferably, it can be seen from Figures 4 to 6 that the first contactable area of the damping device is between the arc-shaped circumferential contactable area 6 and the flat top surface contactable area 7. transition through rounded corners.

Further referring to Figures 7-9, which illustrates another preferred embodiment of the compressor of the present invention, in which the first contactable area of the damping device at least includes an arc-shaped circumferential contactable area 6 and a flat The top surface of the contact area 7. The arc-shaped circumferential contact area 6 of the first contact area of the damping device and the flat top surface contact area 7 are transitioned through a rounded structure. Furthermore, the arc-shaped circumferential contact area 6 of the first contact area of the damping device is also transitioned from the adjacent area in the circumferential direction through a rounded structure.

According to the present invention, in the basic state of the drive unit 2 , a certain distance is maintained between the first contactable area 4 of the damping device 3 and the second contactable area 5 of the housing 1 . When the vehicle equipped with the compressor is accelerating, decelerating or driving on a slope, or otherwise causing the drive unit to deviate from its basic state, the first contactable area 4 of the damping device 3 will contact the housing. Corresponding areas in the second contactable area 5 of the body are in contact, thereby suppressing and limiting the deflection of the driving unit 2 .

In the present invention, the surface form of the first contactable area 4 of the damping device 3 and the surface form of the associated second contactable area 5 of the housing 1 are the same. In other words, there is at least one form-fitting state between the first contactable area of the damping device and the second contactable area of the housing. For example, if the surface form of the first contactable area of the damping device is a plane (see the flat top surface contactable area 7 shown in Figures 5 and 8), then the associated second contactable area of the housing The surface form of the area is also planar. Alternatively, the surface form of the first contactable area of the damping device has a certain curvature (see the first contactable area 4 in Figure 2 and the arc-shaped circumferential contactable area shown in Figures 5 and 8 6), then the surface forms of the relevant second contactable areas of the housing have the same curvature. Typically, the first contactable area of the damping device and the associated second contactable area of the housing are parallel in the basic state of the drive unit.

Preferably, as shown in Figures 1 to 9, according to the preferred embodiment of the present invention, the compressor has at least four damping devices. The four damping devices are arranged at four end corners of a generally rectangular or square area where the internal unit of the compressor is located, and each damping device spans an angle of approximately 90 degrees in the circumferential direction. Based on this arrangement, deflection of the compressor in any direction can be covered.

Referring further to FIG. 10 , it shows a partial enlarged cross-sectional view of the damping device 3 and the housing of the compressor of the present invention in the first contactable area 4 and the second contactable area 5 in the circumferential direction. In the case where the compressor is a linear compressor, the arc-shaped circumferential contact area 6 of the damping device 3 avoids the problem of the drive unit 2 during start/stop and when the rotation speed changes. The rotation of the compressor caused by the rotation of the drive unit 2 tends to collide with the housing, producing undesirable noise. This arc-shaped circumferential contact area allows the drive unit to have greater freedom of movement without touching the housing, that is, greater freedom of rotational movement (especially rotation in the horizontal plane) .

In addition, through the rounded structure provided by the present invention, the corresponding areas of the first contactable area 4 of the damping device 3 and the second contactable area 5 of the housing 1 can be enlarged when they contact each other. The contact area can continuously change with the change of vibration, which improves the effect of suppressing and limiting the deflection of the drive unit 2, reduces the noise and damage that may occur due to the deflection of the drive unit 2, and improves the driving efficiency. Unit 2 Stability.

Further preferably, at least the inner surface and the outer surface of the second contactable area 5 of the housing 1 are parallel to each other. In other words, the housing 1 is deformed in the second contactable area 5 to conform to the shape of the first contactable area 4 of the damping device 3 , wherein the deformation keeps the thickness of the housing substantially unchanged. , thereby making the inner surface and the outer surface of the second contactable area 5 substantially parallel to each other. Of course, the thickness may decrease due to deformation, especially in areas with high curvature, but this is still understood to mean that, according to the invention, the shell thickness remains essentially the same before and after deformation. Preferably, as shown in Figures 3, 6 and 9, the second contactable area 5 of the housing 1 of the present invention has a substantially concave form relative to other parts, thereby ensuring the arc-shaped shape of the damping device 3 The circumferentially accessible area 6 does not touch the housing 1 during the rotational movement of the drive unit 2 . Typically, the housing 1 is produced from sheet metal by deep drawing or hydroforming.

Typically, the damping device 3 has damping properties and preferably includes or consists of a polymer material. In this context, polymeric materials are understood to include any polymeric material with specific elastic, damping properties, such as plastics, elastomers and rubbers produced from natural and/or synthetic materials.

In the description of the present invention, it should be understood that the terms "upper", "lower", "inner", "outer", "high", "low", "concave", "convex", etc. indicate the orientation and positional relationship. Or the shape is based on the orientation, positional relationship or shape shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, configuration and operation, and therefore cannot be understood are limitations of the present invention.

In addition, the terms "first" and "second" are only used to distinguish each other for descriptive purposes, and cannot be understood as indicating or implying relative importance and sequence.

Although the preferred embodiments of the present invention have been shown and described above, it should be understood that the above-described embodiments are illustrative and should not be construed as limitations of the present invention. Those of ordinary skill in the art can make various modifications within the scope of the present invention. The above-described embodiments are subject to combinations, changes, modifications, substitutions and modifications.

Claims (13)

1. A compressor comprising a hermetically sealed housing and a drive unit disposed in the interior of the housing, It is characterized by: At least one damping device for suppressing and limiting deflection of the drive unit is provided in the interior of the housing, the damping device being connected to the drive unit, The damping device has a first contactable area facing the inner surface of the housing and at a certain distance therefrom, The housing includes a second contactable area corresponding to the first contactable area of the damping device, the second contactable area including an inner surface and an outer surface, and the second contactable area of the housing has The shape matches the shape of the first contactable area of the damping device, Wherein, the first contactable area of the damping device at least includes an arc-shaped circumferential contactable area. 2. The compressor according to claim 1, wherein the circumferential contact area is arc-shaped. 3. The compressor of claim 1, wherein the compressor is a linear compressor. 4. The compressor according to claim 1, wherein the shape of the first contactable area of the damping device is one eighth of a spherical surface. 5. The compressor according to claim 2, wherein the first contactable area of the damping device at least includes an arc-shaped circumferential contactable area and a flat top surface contactable area. 6. The compressor of claim 5, wherein the arcuate circumferential contactable area tapers uniformly toward the flat top surface contactable area. 7. The compressor according to claim 5 or 6, characterized in that the arc-shaped circumferential contact area and the flat top surface contact area are transitioned through a rounded structure. 8. The compressor according to claim 2, wherein the arc-shaped circumferential contact area of the first contact area of the damping device is rounded at least in the circumferential direction with adjacent areas. Angular structural transition. 9. The compressor according to claim 7, wherein the arc-shaped circumferential contact area of the first contact area of the damping device is rounded at least in the circumferential direction with adjacent areas. Angular structural transition. 10. The compressor of claim 1, wherein at least the inner surface and the outer surface of the second contactable area of the housing are parallel to each other. 11. Compressor according to claim 1, characterized in that the damping device has damping properties, preferably comprising or consisting of a polymer material. 12. The compressor according to claim 2, wherein the compressor has at least four damping devices. 13. The compressor of claim 12, wherein the arc-shaped circumferential contactable area of the first contactable area of each damping device spans an angle of approximately 90 degrees in the circumferential direction.