CN213627930U

CN213627930U - Combined cylinder cover of compressor

Info

Publication number: CN213627930U
Application number: CN202021263118.0U
Authority: CN
Inventors: 黄波; 冯宾
Original assignee: Shanghai Highly Electrical Appliances Co Ltd
Current assignee: Shanghai Highly Electrical Appliances Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-07-06
Anticipated expiration: 2030-06-30

Abstract

The utility model provides a combination cylinder cap of compressor, include: the cylinder cover is provided with a sunken valve seat groove; the valve plate baffle is arranged in the valve seat groove; and the mosaic block is arranged on the valve block baffle and positioned in the valve seat groove, the mosaic block and the cylinder cover are fixed by welding, and a plurality of welding spots are arranged on the welding surface of the mosaic block and the cylinder cover. The utility model provides an in the combination cylinder cap of compressor, improved the rigidity of cylinder cap at disk seat slot part position, played fine reinforcement effect to the disk seat cell type to, the in-process deflection of fixed mosaic block has been controlled.

Description

Combined cylinder cover of compressor

Technical Field

The utility model belongs to the technical field of the engine technique and specifically relates to a combination cylinder cap of compressor is related to.

Background

The cylinder is provided with a cylinder cover for sealing the cavity, the cylinder cover is provided with a plurality of air holes and valve plates, the valve plates are positioned in a valve seat groove, the thickness of the cylinder cover at the valve seat groove is smaller, and therefore the rigidity of the cylinder cover is weaker. Because the cylinder cover of the cylinder is placed in high pressure during the operation of the compressor, the cylinder cover at the valve seat slot is easy to damage due to the thin thickness and weak rigidity, an embedding block is added at the position of a valve seat groove of a cylinder cover, the embedding block is arranged in the valve seat groove and matched with the shape of the valve seat groove to reinforce the valve seat groove so as to achieve the optimal rigidity strength, besides the shape matching, for stability, the mosaic block needs to be fixed in the valve seat groove and ensure the assembly accuracy, the existing fixing method comprises a mechanical fixing method and a non-mechanical fixing method, the mechanical fixing method can be divided into an interference fixing method and a riveting fixing method, the interference fixing method has the defects that the processing difficulty of the shape and the size of the mosaic block is large and the mosaic block is easy to extrude and deform during installation, and the riveting fixing method has the defects that the processing difficulty of simultaneously riveting the mosaic block, the valve plate and the baffle is large and the processing cost of punching a riveting hole by the mosaic block is increased; the non-mechanical fixing method comprises a glue fixing method and a welding fixing method, wherein the glue fixing method has the problems that glue needs to resist corrosion and temperature, so that the glue fixing reliability is poor, the glue curing time is long, the production efficiency is low, and the traditional welding fixing method easily causes the deformation of a welded valve seat groove, an insert block and the like, so that how to fix the insert block and take the problems into consideration.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combination cylinder cap of compressor can improve the rigidity of cylinder cap at disk seat slot part position, plays fine reinforcement effect to the disk seat cell type to, the in-process deflection of fixed mosaic block has been controlled.

In order to achieve the above object, the utility model provides a combination cylinder cap of compressor, include:

the cylinder cover is provided with a sunken valve seat groove;

the valve plate baffle is arranged in the valve seat groove;

and the mosaic block is arranged on the valve block baffle and positioned in the valve seat groove, the mosaic block and the cylinder cover are fixed by welding, and a plurality of welding spots are arranged on the welding surface of the mosaic block and the cylinder cover.

Optionally, in the combined cylinder head of the compressor, the weld spots include: the welding spot is positioned on the welding surface and is in a point shape, and the welding spot is positioned on the welding surface and is in a linear shape.

Optionally, in the combined cylinder cover of the compressor, the welding spots are welding spots, and the welding spots are uniformly distributed on the welding surface.

Optionally, in the combined cylinder head of the compressor, the number of the welding spots is greater than or equal to 2.

Optionally, in the combined cylinder head of the compressor, the diameter of each welding spot is smaller than or equal to 3 mm.

Optionally, in the combined cylinder cover of the compressor, the welding depth of the welding spot is less than or equal to 5 mm.

Optionally, in the combined cylinder cover of the compressor, the welding spots are welding seams, the number of the welding seams is greater than or equal to 3, and the length of the welding seams is greater than or equal to 1 mm.

Optionally, in the combined cylinder cover of the compressor, the welding depth of the welding seam is less than or equal to 5 mm.

The utility model provides an in the combination cylinder cap of compressor, the combination cylinder cap of compressor includes: the cylinder cover is provided with a sunken valve seat groove; the valve plate baffle is arranged in the valve seat groove; and the mosaic block is arranged on the valve block baffle and positioned in the valve seat groove, the mosaic block and the cylinder cover are fixed by welding, and a plurality of welding spots are arranged on the welding surface of the mosaic block and the cylinder cover. Adopt the utility model discloses a combination cylinder cap of compressor has improved the rigidity of cylinder cap at disk seat slot part position, plays fine reinforcement effect to the disk seat cell type, simultaneously, has controlled the deflection of the in-process cylinder cap of fixed mosaic block. Moreover, the welding surface can be firmer, and the flatness after welding reaches the standard.

Drawings

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

fig. 2 is a schematic longitudinal sectional view of a welded cylinder head according to an embodiment of the present invention;

fig. 3 is a diagram of laser welding deformation data acquisition according to an embodiment of the present invention;

in the figure: 110-cylinder cover, 120-valve seat groove, 130-mosaic block, 140-valve block baffle and 150-welding spot.

Detailed Description

The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

In the following, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances. Similarly, if the method described herein comprises a series of steps, the order in which these steps are presented herein is not necessarily the only order in which these steps may be performed, and some of the described steps may be omitted and/or some other steps not described herein may be added to the method.

The inventors have found that the manner in which the insert is secured in the seat recess is largely divided into mechanical and non-mechanical securing. One of the mechanical fixing methods is to form an interference fit between the shape of the insert and the groove size of the valve seat, and at this time, the insert needs to be forcibly pressed into the groove of the valve seat for installation. However, this method has the following disadvantages: if the outer dimension of the mosaic block is difficult to process, the mosaic block is difficult to install or is easy to generate extrusion deformation. Another way of mechanical fastening is riveting, which also has the following disadvantages: the mosaic block is riveted with the valve block baffle simultaneously, and the processing degree of difficulty is big to with riveting fixed mode, the mosaic block need beat the riveting hole, will lead to the processing cost to increase like this, thereby it all can lead to mosaic block or the function that the valve seat groove warp influence cylinder cap to produce the effort to mosaic block and valve seat groove to be fixed exactly the mechanical type in addition. Therefore, through various researches, it is preferable to select a non-mechanical fixing method, and the main method of the non-mechanical fixing method is fixing by using glue, however, the glue needs to resist corrosion and temperature, is high in requirement, has poor fixing reliability, is easy to be incapable of fixing due to environmental changes, and most importantly, the glue has long curing time and low production efficiency.

Furthermore, since the material for the combined cylinder head of the air conditioner compressor is generally cast iron or powder metallurgy, the welding performance of the material is poor, welding defects such as cracks and air holes are easily generated after welding, and the requirement of local dimensional accuracy for the cylinder head as a precision part of the air conditioner compressor is in the mu level, which is very difficult to control the welding thermal deformation. Therefore, the prior art rarely welds the cylinder head, and if welding is required, the requirements for welding are very high, and the welding is fine enough that certain requirements for the number, shape and size of welding spots are required. The utility model provides a non-mechanical type fixed approach, promptly, refer to fig. 1, the utility model provides a combination cylinder cap of compressor, include:

the cylinder cover 110, wherein a sunken valve seat groove 120 is formed in the cylinder cover 110;

a sheet damper 140 installed in the seat groove 120;

and the mosaic block 130 is arranged on the valve plate baffle 140 and positioned in the valve seat groove 120, the mosaic block 130 is fixed with the cylinder cover 110 through welding, and a plurality of welding spots 150 are arranged on the welding surface of the mosaic block and the cylinder cover.

Correspondingly, the process method for welding the mosaic block in the valve seat groove on the cylinder cover of the cylinder comprises the following steps:

polishing and cleaning the surface of the mosaic block to ensure that the surface of the mosaic block is clean and smooth;

laser welding the mosaic blocks and the cylinder cover to form welding spots on a welding surface;

and controlling the size and the welding depth of the welding spot so that the flatness of the welding spot on the welding surface reaches the standard.

Further, referring to fig. 2 and table 1, a valve seat groove 120 on the cylinder head 110 needs to be installed with an insert 130 to compensate for the lack of rigidity, before installing the insert 130, a valve plate (not labeled in the figure) and a valve plate baffle 140 are installed in the valve seat groove 120, one end of the valve plate baffle 140 after installation is round-like and tilted, and the other end is located at the bottom of the valve seat groove 120, and then the insert 130 is installed and welded in the valve seat groove 120 and on the valve plate baffle 140 located at the bottom of the valve seat groove 120, and the insert 130 does not protrude out of the plane of the cylinder head 110. The corners and burrs of the insert 130 are removed before the insert 130 is mounted, so that the surface of the insert 130 is smooth, and the insert 130 can be tightly fitted to the groove wall of the valve seat groove 120. In addition, the positions where the mosaic blocks 130 and the cylinder cover 110 need to be welded can be cleaned, the cleaning mainly comprises oil removing cleaning, decontamination cleaning and other dirt removing, welding can be firmer due to the clean welding surface, and the welding surface after welding can be smoother, so that subsequent installation of other parts is not influenced. When the mosaic block 130 is welded, the mosaic block 130 and the cylinder cover 110 are fixed into a whole by adopting a laser self-melting (without adding solder) welding process. Polishing, washing mosaic block and welding mosaic block are all in one go, help welding to form the back face of weld firm and the flatness is up to standard.

Referring to fig. 2 and table 1, in an embodiment of the present invention, the welding spots are welding spots 150, the welding spots 150 are in a dot shape, and the welding spots 150 are uniformly distributed on the welding surface, i.e., the overlapping portion between the cylinder cover 110 and the insert 130. The seat recess 120 is a recess having an edge of varying shape, such as oval, circular, or irregular. For example, in the embodiment of the present invention, the shape is irregular, one end is larger and the other end is smaller, similar to the shape of the cross section of the grenade. However, in any shape, if the welding spot 150 is welded, the distribution of the welding spot 150 on the edge line is uniform, that is, the curved distance between each welding spot 150 and the welding spot 150 is the same. The evenly distributed welding spots 150 can increase the welding firmness and indirectly increase the rigidity.

Preferably, the number of solder bumps 150 is greater than or equal to 2. The shape of the welding spot 150 is the shape of a spot, so that there may be no welding between the spot and the spot, so there is a requirement on the number of the welding spots 150, and the more the number of the welding spots 150 is, the firmer the welding is, and the specific number can be determined comprehensively according to the cost generated during welding and the welding time.

Preferably, the individual welds 150 are less than or equal to 3mm in diameter. The size of the spot welds 150 may also affect the weld firmness, but the size of the spot welds 150 may affect other surrounding components, and the spot welds 150 are too large wasting processing time, so that, through experiments, the diameter of a single spot weld 150 is preferably less than or equal to 3mm and the depth of the weld is less than or equal to 5 mm. Specifically, table 1 is a laser welding deformation amount data acquisition table, fig. 3 is a laser welding deformation amount data acquisition diagram, and it can be seen from the diagram that 10 welding points are selected from a large amount of data as samples, and statistics are made on the welding depth, the diameter of the welding point, and the flatness of the welding surface after welding of each sample, for example, the welding depth of the first sample is 1mm, the diameter of the welding point is 1mm, and the flatness of the welding surface is 0.01 mm; the second sample had a weld depth of 2mm, a weld spot diameter of 2mm, and a welded face flatness of 0.02 mm. In turn, until the fifth sample, the welding depth of the fifth sample was 5mm, the diameter of the welding spot was 3mm, and the flatness of the welded welding surface was 0.03mm, and then, looking down, the welding depth of the sixth sample was 6mm, the diameter of the welding spot was 4mm, and the flatness of the welded welding surface was 0.05mm, the flatness of the fifth sample to the sixth sample increased substantially, and the flatness was low, as can be seen from table 1 and fig. 3, the flatness increased continuously with the increase in the size of the welding depth and the diameter of the welding spot, and the flatness also increased, and the flatness continued to deteriorate. Therefore, in order to keep good roughness to in order not to cause the circumstances such as the cylinder cap face deformation damage and welding deformation after the welding, the utility model discloses an inventor has obtained the optimum size of solder joint through a large amount of data research, and the diameter of single solder joint 150 is preferred to be less than or equal to 3mm, and the depth of weld is less than or equal to 5 mm. The utility model discloses the correlation of the size of the welding depth and solder joint and the plane degree of face of weld of the embodiment is that the inventor forms through a large amount of data research, has paid out many achievements. The standard reaching of the welding surface is judged by judging whether the height of the welding surface is a preset value or within the preset value, the preset value is set by an inventor, and the inventor can set the flatness through the subsequent process possibly participated in by the cylinder cover or the requirement of the cylinder cover on the flatness. The embodiment of the utility model provides a require the plane degree to be less than or equal to 0.03mm the utility model discloses in other embodiments, probably other values.

Test sample number	Depth of weld (mm)	Spot diameter (mm)	Flatness of welding surface (mm)
				1	1	1	0.01
2	2	2	0.02
				3	3	3	0.01
4	4	3	0.01
				5	5	3	0.03
6	6	4	0.05
				7	7	4	0.07
8	8	4	0.05
				9	9	4	0.05
10	10	4	0.1

TABLE 1

Preferably, the laser power used for welding is: 200W-1500W, and the laser focal length range is as follows: -2mm to +20mm, and the time of laser spot welding light emergence is less than or equal to 1 s. In order to weld out better solder joint 130, the embodiment of the utility model provides a laser power, laser focal length scope and the laser spot welding time of light-emitting that the welding adopted have all been injectd.

In another embodiment of the present invention, the welding spot is a welding seam, the shape of the welding seam is a straight line, the number of the welding seams is greater than or equal to 3, and the length of the welding seam is greater than or equal to 1 mm. The welding depth is less than or equal to 5 mm. The welding depth of the welding seam also influences the flatness of the welding surface, and the welding depth is controlled to be less than or equal to 5mm, so that the flatness can reach the standard.

Preferably, the laser power used for welding is: 200W-1500W, and the laser focal length range is as follows: 0 mm-20 mm, and the laser welding light-emitting time is less than or equal to 0.8 s. In order to weld out better current situation welding seam, the embodiment of the utility model provides a time of laser power, laser focus scope and the laser welding light-emitting that welding adopted has all been injectd.

To sum up, in the utility model provides an in the combination cylinder cap of compressor, the combination cylinder cap of compressor includes: the cylinder cover is provided with a sunken valve seat groove; the valve plate baffle is arranged in the valve seat groove; and the mosaic block is arranged on the valve block baffle and positioned in the valve seat groove, the mosaic block and the cylinder cover are fixed by welding, and a plurality of welding spots are arranged on the welding surface of the mosaic block and the cylinder cover. Adopt the utility model discloses a combination cylinder cap of compressor has improved the rigidity of cylinder cap at disk seat slot part position, plays fine reinforcement effect to the disk seat cell type, simultaneously, has controlled the deflection of the in-process cylinder cap of fixed mosaic block. Moreover, the welding surface can be firmer, and the flatness after welding reaches the standard.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. A combined head for a compressor, comprising:

the cylinder cover is provided with a sunken valve seat groove;

the valve plate baffle is arranged in the valve seat groove;

2. The combined head of a compressor, as set forth in claim 1, characterized in that said weld spots comprise: the welding spot is positioned on the welding surface and is in a point shape, and the welding spot is positioned on the welding surface and is in a linear shape.

3. The compressor composite head as set forth in claim 2, wherein said weld spots are spots, and wherein said weld spots are evenly distributed on said weld face.

4. The combined head of a compressor, as set forth in claim 3, characterized in that said number of welds is greater than or equal to 2.

5. Combined head for a compressor, according to claim 4, characterized in that the diameter of a single said weld is less than or equal to 3 mm.

6. Combined head for a compressor, according to claim 5, characterized in that said welding points have a welding depth less than or equal to 5 mm.

7. The combined cylinder head of a compressor, according to claim 2, characterized in that said weld spots are welds, the number of said welds being greater than or equal to 3, the length of said welds being greater than or equal to 1 mm.

8. The combined cylinder head of a compressor, as set forth in claim 7, characterized in that said weld seam has a weld depth of less than or equal to 5 mm.