CN103380298A

CN103380298A - Valve plate assembly of compressor

Info

Publication number: CN103380298A
Application number: CN2012800076974A
Authority: CN
Inventors: 李建祜; 金基范; 李泰镇; 金成龙
Original assignee: Doowon Electronics Co Ltd; Doowon Technical College
Current assignee: Doowon Electronics Co Ltd; Doowon Technical College
Priority date: 2011-02-08
Filing date: 2012-02-07
Publication date: 2013-10-30
Anticipated expiration: 2032-02-07
Also published as: KR20120090529A; CN103380298B; WO2012108671A2; KR101452888B1; WO2012108671A3

Abstract

A valve plate assembly of a compressor of the present invention comprises: a valve plate in which a suction port is formed; and a suction reed which opens and closes the suction port. The suction port comprises a first suction port at an inlet and a second first suction port at an outlet, wherein the area of the second first suction port is wider than that of the first suction port. Accordingly, the suction port consisting of the first and second suction ports has a wide area thereof, thereby preventing the flow rate of sucked refrigerants from increasing and minimizing the drop of pressure of the sucked refrigerants.

Description

The valve board assembly of compressor

Technical field

The present invention relates to the valve board assembly of compressor, relate more specifically to the valve board assembly of the compressor that increases with the flow velocity of the refrigeration agent that prevents from sucking for increasing the area of suction port.

Background technique

Because the compressor that comprises in the cooling system of automotive air conditioning device connects in succession by belt and engine direct, therefore can not control the rotation number of compressor.

Therefore, at present, the variable conpacitance compressor that can be in the situation of the rotation number restriction that is not subjected to motor obtains cooling capacity by the discharge capacity that changes refrigeration agent is widely applied.

Disclosed dissimilar variable conpacitance compressors such as swash plate type (swash plate type), rotary-type (rotary type) and Scrawl (scroll type).

Here, in swash plate type compressor, the swash plate that the mode that changes in crank box with the tilt angle arranges rotates along with the rotation of transmission shaft, and piston to-and-fro motion along with the rotation of swash plate.In this case, along with the to-and-fro motion of piston, the refrigeration agent in the suction chamber is inhaled in the cylinder, compressed, and then is discharged to and discharges the chamber.At this moment, because the tilt angle of swash plate changes according to the difference between the pressure in the pressure in the crank box and the cylinder hole, so the discharge capacity of refrigeration agent is adjusted.

Especially, usually regulate as follows discharge capacity: by opening or closing valve with the electromagnetic type capacity control drive according to electric current, thereby regulate the pressure of crank box, and correspondingly regulate the tilt angle of swash plate.

Here, calculate such as the rotation number after testing of motor, the internal and external temperature of automobile or the signals such as temperature of vaporizer by controller (comprising central processing unit (CPU)), and based on the electronic coil transmission electric current of result of calculation to capacity control drive, at this moment starting capacity control valve.

And, comprise that the valve plate of suction port and exhaust port is arranged between housing and the cylinder body, wherein suction port and exhaust port open or close by reed.

Now with reference to Fig. 1 and Fig. 2 common valve board component 1 is described.

As depicted in figs. 1 and 2, common valve board component 1 comprises valve plate 2 and valve block 3, is formed with suction port 2a in valve plate 2, and valve block 3 comprises the reed 3a that is used to open or close suction port 2a.

Here, reed 3a is connected to valve block 3 by resilient elongate neck 3b.

Therefore, open or close suction port 2a to suck refrigeration agent by reed 3a.

Yet in common valve board component 1, when by having suction port 2a than small size when refrigeration agent is drawn into the cylinder hole, the flow velocity of the refrigeration agent of suction increases, and has produced thus pressure drop.

Here, owing to the pressure drop of the refrigeration agent that sucks, the flow losses (flow loss) of the refrigeration agent that sucks have also been produced.

In addition, valve lift (valvelift) increase along with the reed 3a that is used for opening and closing suction port 2a has produced noise, and this moment is owing to the time that needs length is recovered reed 3a, so the Efficiency Decreasing of compressor.

Reason is, passes the refrigeration agent that has than the suction of the suction port 2a of small size and concentrates on the reed 3a.

In addition, because the increase of valve lift among the reed 3a has also increased dead volume (deadvolume), and thereby reduced cooling capacity.

Summary of the invention

Technical problem

The invention provides the following valve board assembly of compressor, this valve board assembly prevents that by increasing the suction port useful area flow velocity of the refrigeration agent that sucks from increasing, thereby reduces the pressure drop of the refrigeration agent that sucks.

Technological scheme

According to an aspect of the present invention, provide a kind of compressor valve board assembly, described valve board assembly comprises: valve plate is formed with suction port in described valve plate; And suck reed, and described suction reed opens and closes described suction port, and wherein, described suction port comprises the first suction port that is positioned at opening and the second suction port that is positioned at the outlet port, and the area of described the second suction port is greater than the area of described the first suction port.

Described valve plate comprises the first valve plate that is formed with described the first suction port and the second valve plate that is formed with described the second suction port.

Because described the first valve plate is partly closed the entrance of described the second suction port, described the first suction port and described the second suction port have ledge structure.

Described the first suction port has long hole shape at the circumferencial direction of described valve plate, and described the second suction port comprises jut, and described jut surrounds described the first suction port and extends around described valve plate across with described circumferencial direction.

Two juts in the described jut are to form along the both sides of groove part.

Beneficial effect

According to one or more embodiments' of the present invention compressor valve board assembly, because the suction port that comprises the first and second suction ports has large area, increase so prevented the flow velocity of the refrigeration agent that sucks, thereby and reduced the pressure drop of the refrigeration agent that sucks.

And, by reducing pressure drop, suppressed the flow losses of the refrigeration agent of suction.

And, owing to increased the area that the refrigeration agent that sucks on the reed is had an effect, thus the valve lift of reed reduced, and thereby suppressed noise.

In addition, owing to reduced the valve lift of reed, thus also reduced dead volume, and thereby increased cooling effectiveness.

Description of drawings

Fig. 1 is the exploded perspective view of common valve board component;

Fig. 2 is the front view of the common valve board component of Fig. 1;

Fig. 3 is the longitudinal cross-section figure according to the structure of the variable conpacitance compressor of the embodiment of the invention;

Fig. 4 is the exploded perspective view of the valve board assembly of Fig. 3;

Fig. 5 is the stereogram after the valve board assembly of Fig. 4 makes up; And

Fig. 6 is the amplification stereogram of major component of the variable conpacitance compressor of Fig. 3.

Embodiment

Hereinafter, with reference to the accompanying drawing that shows exemplary embodiment of the present invention the present invention is described more fully.In these accompanying drawings, identical reference character represents identical parts.

Fig. 3 is the longitudinal cross-section figure according to the structure of the variable conpacitance compressor of the embodiment of the invention, Fig. 4 is the exploded perspective view of the valve board assembly of Fig. 3, Fig. 5 is the stereogram after the valve board assembly combination of Fig. 4, and Fig. 6 is the amplification stereogram of major component of the variable conpacitance compressor of Fig. 3.

At first, with the structure of summary according to the varying capacity swash plate type compressor that comprises valve board assembly of the embodiment of the invention.

As shown in Figure 3, varying capacity swash plate type compressor C comprises: cylinder body 10, and it has a plurality of cylinders hole 12 that forms abreast along its length on internal circular surfaces; Front case 16, it is sealingly attached to the front portion of cylinder body 10; With rear case 18, it is sealingly attached to the rear portion of cylinder body 10.

Crank box 86 is arranged at the inside of front case 16, and transmission shaft 44 is arranged near the center of front case 16, wherein an end of transmission shaft 44 is rotatably supported, and the other end of transmission shaft 44 passes crank box 86 and by supporting with the vehicular bearing that is arranged in the cylinder body 10.

And the circumference along transmission shaft 44 in crank box 86 is provided with shackle plate (lug plate) 54 and swash plate 50.

Shackle plate 54 comprise from a surface integral of shackle plate 54 a pair of power transmission support arm 62 given prominence to, the bullport 64 of wherein having bored a hole point-blank in each central part office of power transmission support arm 62, and be extruded with arm 66 from a surface of swash plate 50, arm 66 locates to have spheroid endways.Therefore, when shackle plate 54 rotation, the spheroid in the arm 66 of swash plate 50 slides in the bullport 64 of shackle plate 54, thereby the angle of inclination of swash plate 50 changes.

And the outer surface of swash plate 50 is inserted in each piston 14 slidably by boots (shoe) 76.

Therefore, when swash plate 50 rotations and inclination, be inserted with piston 14 to-and-fro motion in each cylinder hole 12 of cylinder body 10 of above-mentioned outer surface by boots 76.

Along with the to-and-fro motion of piston 14, the refrigeration agent in the suction chamber 22 is inhaled in the cylinder hole 12 and is compressed, and is discharged to discharge chamber 24.Here, change the tilt angle of swash plate 50 according to the difference between the pressure in the pressure in the crank box 86 and the suction chamber 22, thereby regulate the discharge capacity of refrigeration agent, this adjusting is undertaken by capacity control drive 200 usually, and capacity control drive 200 is regulated the pressure of crank box 86 and regulated discharge capacity by the tilt angle of regulating swash plate 50 by opening and closing valve according to electric current.

Rear case 18 comprises suction chamber 22 and discharges chamber 24, and valve board assembly 100 is arranged between rear case 18 and the cylinder body 10.

Above-mentioned varying capacity swash plate type compressor C only is the example that is provided with the compressor of valve board assembly 100, and thereby valve board assembly 100 can be applied to any compressor.

To describe now the valve board assembly 100 according to the embodiment of the invention in detail.

Shown in Fig. 3-6, valve board assembly 100 comprises valve plate 110 and sucks reed 120, is formed with suction port 111 in valve plate 110, sucks reed 120 and opens or closes suction suction port 111.

At first, by being communicated with suction chamber 22 refrigeration agent that sucks is transferred to suction port 111, and suction reed 120 is connected to valve block 122 by neck 121.

Here, suck reed 120 and neck 121 because resiliently deformable occurs the suction pressure Ps of the refrigeration agent that sucks, close thus or open suction port 111, and thereby the refrigeration agent of suction is transferred in the cylinder hole 12.

And suction port 111 comprises the first suction port 112 that is positioned at the ingress and the second suction port 113 that is positioned at the outlet port, and wherein the area of the second suction port 113 can be greater than the area of the first suction port 112.

And valve plate 110 comprises towards the first valve plate 110a of suction chamber 22 with towards the second valve plate 110b in cylinder hole 12.Here, the first suction port 112 can be formed on the first valve plate 110a, and the second suction port 113 can be formed on the second valve plate 110b.

Perhaps, the first and second suction ports 112 and 113 can be formed on the valve plate.

Because the first valve plate 110a partly closes the entrance of the second suction port 113, the first and second suction ports 112 and 113 have ledge structure.In other words, the first and second suction ports 112 that suck with the refrigeration agent that will suck have different areas with 113 owing to communicate with each other in the above described manner, so when the first and second valve plate 110a and 110b overlapped each other, the first and second suction ports 112 and 113 had ledge structure.

With reference to figure 4 and Fig. 5, the first suction port 112 has long hole shape at the circumferencial direction of valve plate 110, and the second suction port 113 comprises jut 114, jut 114 surrounds the first suction port 112, and around valve plate 110, extend across with circumferencial direction simultaneously, therefore, the first and second suction ports 112 and 113 can have more natural ledge structure.

Two juts in the jut 114 form along the both sides of groove part 115, but selectively, the quantity of jut 114 can be one or at least 3.

Therefore, because the first and second suction ports 112 and 113 have large area, increase so prevented the flow velocity of the refrigeration agent of suction, and therefore reduced the pressure drop of the refrigeration agent of suction.

At length, the flow velocity of the refrigeration agent that sucks reduces, and compare with suction chamber 22 at the first suction port 112 simultaneously and have relative little area, and the second suction port 113 is compared with the first suction port 112 in the situation that relative larger area is arranged, owing to the refrigeration agent that sucks has suppressed pressure drop through suction chamber 22.

And, owing to reduced the pressure drop of the refrigeration agent of suction, so the flow losses of the refrigeration agent that can suppress to suck.

And, owing to increased and sucked the area that the refrigeration agent that sucks on the reed 120 is had an effect by compare the suction port 111 with relative large area with the sucting 2a of Fig. 1, so reduced the valve lift that sucks reed 120, and thereby suppressed the generation of noise.

In addition, because it is not high to suck the valve lift of reed 120, thus can easily recover to suck reed 120, and thereby can suppress the Efficiency Decreasing of varying capacity swash plate type compressor C.

In addition, owing to suck the valve lift through reducing of reed 120, dead volume also can reduce, and thereby has improved cooling capacity.

Although by with reference to exemplary embodiment of the present invention the present invention having been carried out at length illustrating and illustrating, but it will be appreciated by those skilled in the art that and in the situation that does not depart from the scope and spirit of the present invention that defined by claim, to make various modifications in form or details.

For example, in the superincumbent explanation, the pressure drop of the refrigeration agent that reduces to suck at the sucting place, but one or more embodiment of the present invention also can be applied to discharge portion.

Claims

1. the valve board assembly of a compressor, described valve board assembly comprises:

Valve plate is formed with suction port in described valve plate; And

Suck reed, described suction reed opens and closes described suction port,

Wherein, described suction port comprises the first suction port that is positioned at opening and the second suction port that is positioned at the outlet port, and the area of described the second suction port is greater than the area of described the first suction port.

2. valve board assembly as claimed in claim 1, wherein, described valve plate comprises the first valve plate that is formed with described the first suction port and the second valve plate that is formed with described the second suction port.

3. valve board assembly as claimed in claim 2, wherein, because described the first valve plate is partly closed the entrance of described the second suction port, described the first suction port and described the second suction port have ledge structure.

4. such as each described valve board assembly among the claim 1-3, wherein, described the first suction port has long hole shape at the circumferencial direction of described valve plate, and described the second suction port comprises jut, and described jut surrounds described the first suction port and extends around described valve plate across with described circumferencial direction.

5. valve board assembly as claimed in claim 4, wherein, two juts in the described jut are that the both sides along groove part form.