CN101191474A - Compressor - Google Patents

Abstract

The present invention provides a kind of compressor, which can really eliminate the problem that the surface and back of the formed metal shim concluding the reinforcing rib is making a mistake to install. Use a plurality of metal sheet forming at least two local holes (67, 68) to overlap to form sealing elements between the valve board (5G) and the shell body (5A). The first metal gasket (13A) of a plurality of metal gasket (13A, 13B) comprises reinforcing rib and the second metal gasket (13B) doesn't. Put the projection of the reinforcing rid of the said first metal gasket (13A) of a plurality of metal gaskets overlapping at the side of the second metal gasket (13B), and using all of the locating stud (65,66) to form location at the position that upturning the surface and the back using holes (67,68).

Description

Compressor

Technical field

The present invention relates to a plurality of members are fixed on the compressor that forms on the housing body across Sealing with bolt.

Background technique

In the past, for example in reciprocating type half airtight type compressor, a plurality of members such as valve plate and cylinder head were fixed by bolts to constituted housing on the housing body by the compressed action that piston moved back and forth carry out refrigeration agent in cylinder.In addition, in that being set respectively between cylinder head and the valve plate, between valve plate and housing body, Sealing carries out sealing (for example, with reference to patent documentation 1) between each member.

Patent documentation 1: TOHKEMY 2004-301071 communique

Sealing as this occasion used the pad that is made of asbestos in the past usually.On this pad, be formed with respectively be formed at housing body in cylinder corresponding cylinder hole, at a side of this cylinder-bore and opposite side respectively with the corresponding suction oral pore of suction port and exhaust port and discharge oral pore, the bolt hole that a plurality of bolt ran through that housing body and each member is fixing and at least 2 positioning holes that positioning pin ran through that erect from housing.

In addition, in this reciprocal compressor, the top clearance of piston (gap between cylinder and the valve plate) becomes important key element.Therefore, because the deviation of the tolerance of the mechanical part of compressor side, it is big that deviation amplitude during assembling becomes, the top clearance of piston is uneven, therefore, even make asbestos washer with identical thickness of slab nominal size, also can produce thicker, middle, the thin different asbestos washer of equal thickness, to the asbestos washer classification of producing like this, from this grade, select to use the pad that is arranged between valve plate and the housing body, thereby adjust the top clearance of piston.

But in recent years, because human body is had harmful effect, so asbestos material can not use, as the pad of this compressor, must use the metallic shim that is made of cold rolled sheet or corrosion resistant plate etc. as above-mentioned patent documentation illustrates.

Because the thickness of slab precision of this metallic shim is very high, therefore, be difficult to as described above with the same plate product of improving people's living condition.In addition, in order to improve its crimp strength, to obtain necessary sealed surface pressure, on this metallic shim, be formed with stiffening rib, still, when making the thickness size identical, also produce and to carry out stiffening rib processing or the very difficult problem of stiffening rib processing with the asbestos gasket.

Therefore, the claimant develops by the multi-disc metallic shim and constitutes the compressor that is located in the pad between valve plate and the housing body.Promptly, be located at the pad of the thickness of slab of at least one metallic shim (the 1st metallic shim) use carrying out the easily stiffening rib processing in the multi-disc metallic shim between valve plate and the housing body, on the 1st metallic shim, form stiffening rib, on other metallic shim (the 2nd metallic shim), do not form stiffening rib, and prepare the different pad of multiple thickness of slab as the 2nd metallic shim.

Then, select the 2nd metallic shim of arbitrary thickness of slab, the projection summit that two metallic shims is overlapped into the stiffening rib that makes the 1st metallic shim is positioned at the 2nd metallic shim side, thereby adjustment overall dimensions, then, adjusted metallic shim is sandwiched between valve plate and the housing body assemble compressible machine.Thus, easily top clearance between piston and the valve plate is adjusted into optimum value, can carries out stiffening rib processing simultaneously without barrier and guarantee sealing.

Especially, the projection summit of the stiffening rib by two metallic shims being overlapped into the 1st metallic shim is positioned at the 2nd metallic shim side, the projection summit butt of the 2nd metallic shim and the 1st metallic shim, therefore, compare with the situation of the 2nd metallic shim butt with the recessed side that makes stiffening rib, can strengthen the mutual crimp strength of two metallic shims, improve the sealing of the two.

In addition, by two metallic shims being overlapped into the 2nd metallic shim is that valve plate side, the 1st metallic shim are the housing body side, all make the lower housing body of the 1st metallic shim crimp surface precision that is formed with stiffening rib in any case, can guarantee the sealing between the 1st metallic shim and the housing body well.

But gasket shape in the past is with respect to by sucking the shape of the oral pore and the center line symmetry at the center of discharging oral pore, does not need to distinguish especially table back of the body two sides.On the pad of shape so in the past, form stiffening rib and when making the 1st metallic shim, one side (for example surface) at the 1st metallic shim goes up the projection that constitutes stiffening rib, constitute the depressed portions of stiffening rib at another side (for example back side), therefore, the configuration meeting on the table of the 1st pad back of the body two sides has appreciable impact to sealing.

Promptly, in the mode of surperficial butt the 2nd metallic shim that becomes stiffening rib projection one side of the 1st metallic shim with the two when overlapping, as described above, can strengthen the mutual crimp strength of metallic shim, improve the sealing of the two, but if opposite, in the mode of back side butt the 2nd metallic shim of the 1st metallic shim that becomes the recessed side of stiffening rib with the two when overlapping, the mutual crimp strength of two metallic shims has reduced, and sealing has also reduced.Therefore, the table back of the body two sides that metallic shim correctly is installed is important, but in formation in the past, can only judge the table back of the body of the 1st metallic shim with the shape of stiffening rib,, also may install even table back of the body two sides is opposite, therefore, mistake occurs and will show the problem that install on the contrary back of the body lane.

Summary of the invention

The present invention is for the technical problem that solves in the past makes, and provides a kind of table back of the body two sides that can eliminate the metallic shim that will be formed with stiffening rib really mistaken and be installed on the compressor of the problem between housing body and a plurality of member.

The compressor of the present invention of technological scheme 1 is fixed on a plurality of members with bolt and constitutes housing on the housing body and form across Sealing, it is characterized in that, Sealing is made of metallic shim, on this metallic shim, be formed with stiffening rib and at least two locating studs are used the hole, and each locating stud is respectively formed at the position that becomes mutual diverse location will the upset of the table back of the body time with the hole.

The compressor of the present invention of technological scheme 2, be to carry out compressed action by the piston that in the cylinder of the housing body that constitutes housing, moves back and forth, and with bolt cylinder head is fixed on across Sealing and valve plate and forms on the housing body, it is characterized in that, be formed with at least two locating studs and constitute the above-mentioned Sealing that is arranged between valve plate and the housing body a plurality of with the metallic shim in hole is overlapping, be formed with stiffening rib on the 1st metallic shim in these a plurality of metallic shims, on the 2nd metallic shim, do not form stiffening rib, the projection summit that this metallic shim is overlapped into the stiffening rib of the 1st metallic shim is positioned at the 2nd metallic shim side, and above-mentioned each locating stud is respectively formed at and will shows to become when the back of the body overturns the position of mutual diverse location with the hole.

According to technological scheme 1, constitute on the housing body in the compressor that housing forms a plurality of members being fixed on across Sealing with bolt, Sealing is made of metallic shim, on this metallic shim, be formed with stiffening rib and at least two locating studs are used the hole, and each locating stud becomes the position of mutual diverse location when being respectively formed at the upset of the table back of the body with the hole, therefore, can eliminate the problem that the lane, table back of the body two sides of metallic shim is installed on the contrary really.

Particularly, be formed with on the metallic shim of stiffening rib, the allocation position of the face of the face of the raised sides of stiffening rib and the recessed side of stiffening rib has appreciable impact to sealing, but according to technological scheme 1, owing to can eliminate really the problem of installation is on the contrary done on the table back of the body two sides of metallic shim, therefore, can guarantee sealing really.Therefore, also can improve the reliability of compressor.

According to technological scheme 2, the piston that moves back and forth in the cylinder by the housing body that is constituting housing carries out compressed action, and cylinder head is fixed in the compressor that forms on the housing body across Sealing and valve plate with bolt, be formed with at least two locating studs and constitute the above-mentioned Sealing that is arranged between valve plate and the housing body a plurality of with the metallic shim in hole is overlapping, be formed with stiffening rib on the 1st metallic shim in these a plurality of metallic shims, on the 2nd metallic shim, do not form stiffening rib, the projection summit that this metallic shim is overlapped into the stiffening rib of the 1st metallic shim is positioned at the 2nd metallic shim side, and above-mentioned each locating stud becomes the position of mutual diverse location when being respectively formed at the upset of the table back of the body with the hole, therefore, can eliminate the problem that the lane, table back of the body two sides of metallic shim is installed on the contrary really.

Particularly, be formed with on the 1st metallic shim of stiffening rib, the allocation position of the face of the face of the raised sides of stiffening rib and the recessed side of stiffening rib has appreciable impact to sealing, but according to technological scheme 2, owing to can eliminate really the problem of installation is on the contrary done on the table back of the body two sides of metallic shim, therefore, can guarantee sealing really.

That is it is overlapping with the two, can be positioned at the mode of the 2nd metallic shim side with the projection summit of the stiffening rib of the 1st metallic shim really.Thus, can strengthen the mutual crimp strength of two metallic shims, improve the sealing of the two, thereby can further improve the sealing between valve plate and the housing body.Therefore, also can improve the reliability of compressor.

Description of drawings

Fig. 1 is the plan view (embodiment 1) that is suitable for the half airtight type compressor of one embodiment of the present of invention.

Fig. 2 is the vertical profile plan view of the compressor of Fig. 1.

Fig. 3 is the local vertical profile side view of the compressor of Fig. 1.

Fig. 4 is the decomposition vertical profile plan view of the compressor of Fig. 1.

Fig. 5 is the local vertical profile side view of decomposition of the compressor of Fig. 1.

Fig. 6 is mounted in the plan view of the 1st metallic shim on the compressor of Fig. 1.

Fig. 7 is the figure of stiffening rib pattern of the 1st metallic shim of presentation graphs 6.

Fig. 8 is the amplification plan view of the 1st metallic shim of Fig. 6.

Fig. 9 is the stiffening rib sectional view partly of the 1st metallic shim of Fig. 6.

Figure 10 is the bolt hole sectional view partly of the 1st metallic shim of Fig. 6.

Figure 11 is mounted in the plan view of the 2nd pad on the compressor of Fig. 1.

Figure 12 is mounted in the plan view (embodiment 2) of another the 1st pad on the compressor of Fig. 1.

Figure 13 is mounted in the plan view of another the 2nd pad on the compressor of Fig. 1.

Figure 14 is mounted in the plan view (embodiment 3) of another the 1st pad on the compressor of Fig. 1.

Figure 15 is mounted in the plan view of another the 2nd pad on the compressor of Fig. 1.

Figure 16 is the local vertical profile side view (embodiment 4) of decomposition of the half airtight type compressor of another embodiment of the present invention.

Embodiment

The present invention makes in order to eliminate following problem really, promptly does to install on the contrary the problem that causes the sealing between housing body and each member to reduce owing to will be formed with the table back of the body two sides of the metallic shim of stiffening rib.Below, embodiments of the present invention are described in detail in detail with reference to the accompanying drawings.

Embodiment 1

Fig. 1 is the plan view that is suitable for the half airtight type compressor 1 of one embodiment of the present of invention, Fig. 2 is the vertical profile plan view of compressor 1, Fig. 3 is the local vertical profile side view of compressor 1, Fig. 4 is the decomposition vertical profile plan view of compressor 1, Fig. 5 is the local vertical profile side view of the decomposition of compressor 1, Fig. 6 is mounted in the plan view of the 1st metallic shim 13A on the compressor 1, and Figure 11 is mounted in the plan view of the 2nd metallic shim 13B on the compressor 1.

Embodiment's compressor 1 is by the motor (driving element) 2 that produces rotating power, power-converting parts 3, compression member 4 and the formations such as housing 5 of accommodating them, these power-converting parts 3 will convert reciprocating power to by the rotating power that this motor 2 produces, this compression member 4 is driven compressed refrigerant natural refrigeration agent or R-134a, R-22 etc. such as (for example) carbon dioxide by the reciprocating power by these power-converting parts 3 conversions.In addition, embodiment's compression member 4 is made into the two cylinder arrangement with the 1st press part 11A and the 2nd press part 11B.

Housing 5 is made of housing body 5A, motor side cover 5B, division plate 5C, bottom 5D, bent axle side cover 5E, shaft-cup 5F, valve plate 5G, cylinder head 5H etc., this housing body 5A is that material is made with spheroidal graphite cast iron etc., by a plurality of bolts 14 these members are clipped that Sealing 13 ground are fastening to be fixed on the housing body 5A, be assembled into air-tight state.

Be useful on the lubricant oil of each sliding parts in the lubricate compressors 1 in the bottom storage of housing body 5A, can pass through side glass (perspective window) 16 and confirm oil masses.The inner space of housing body 5A is divided into motor room 18 and crank chamber 19 by dividing plate 5C.In addition, dividing a plurality of through holes 17 of formation on the plate 5C, the atmosphere of motor room 18 and crank chamber 19 and lubricant oil can be via these through hole 17 contacts.

In addition, be formed with many housing radiating fin 20 at outer side surface, thereby can dispel the heat expeditiously from housing 5 with the 18 corresponding shell main body 5A of motor room.Have again, on motor side cover 5B, be formed with oil groove 21, on division plate 5C, be formed with main bearing 22, on crank side cover 5E, be formed with supplementary bearing 23.

Power-converting parts 3 form as one with the motor reel 24 of motor 2, have crank 25A, 25B and connecting rod 26A, 2 6B etc. that are connected with these cranks 25A, 25B respectively, above-mentioned crank 25A, 25B are by converting rotating power to reciprocating power with respect to the eccentric rotation in the axle center of motor reel 24.Crank 25A and connecting rod 26A and above-mentioned the 1st press part 11A are provided with accordingly, and crank 25B and connecting rod 26B and above-mentioned the 2nd press part 11B are provided with accordingly.

Motor 2 is the sealed electric-motors that are inlaid in the motor room 18, and break-through is provided with the hole of specified diameter and constitutes main lubricating oil path 28 on the axle center of its motor reel 24.In addition, formation makes flow of lubricant to the big end of connecting rod 26A, 26B, the lubricated road of small end on motor reel 24, has also formed simultaneously to constitute to make the secondary lubricating oil path 29 of flow of lubricant to the lubricated road of main bearing 22, supplementary bearing 23.

And, one end of this motor reel 24 is inserted in this oil groove 21 from the side of oil groove 21, its the other end after running through main bearing 22 be arranged on crank side cover 5E on supplementary bearing 23 engage, by above-mentioned main bearing 22 and supplementary bearing 23 free rotary ground supportings.

Have, lubricant oil is installed on the rotor of motor 2 stirs the wing 30, the rotor of motor 2 is with motor reel 24 rotations.Thus, when lubricant oil stirs that the wing 30 is followed the rotation of motor 2 and when rotating, the lubricant oil that is stored in housing 5 bottoms stirs on the wing 30 attached to lubricant oil and is stirred, and the lubricant oil that at this moment drips down remains in the oil groove 21.Because motor reel 24 is inserted in this oil groove 21 and is formed with main lubricating oil path 28 on this motor reel 24, therefore, exist oil groove 21 interior flow of lubricants to become owner of in the lubricating oil path 28 and and flow to crank side cover 5E.

Because by the rotation of motor reel 24, make the lubricant oil that flows into main lubricating oil path 28 be subjected to centrifugal force and to secondary lubricating oil path 29 shuntings, supply to the slip surface of the big end, small end etc. of main bearing 22, supplementary bearing 23, connecting rod 26A, 26B.As described later, lubricant oil also supplies between the piston and cylinder that constitutes compression member 4, has improved the tightness of pressing chamber.And the lubricant oil (remaining lubricant oil) that is not used to lubricated each slide part returns the bottom that turns back to housing 5 after discharge on road (not shown) from the lubricant oil that forms at crank shaft-cup 5E.

In addition, with motor 2 above be provided with splicing ear case 33 on the housing body 5A of corresponding position, this splicing ear case 33 is taken in the splicing ear 32 that is useful on to motor 2 power supplies.

Compression member 4 has above-mentioned the 1st press part 11A and the 2nd press part 11B, press part 11A by the 1st cylinder 40A that in housing body 5A, forms and respectively in each cylinder 40A reciprocating the 1st piston 41A constitute, press part 11B by the 2nd cylinder 40B that in housing body 5A, forms and in each cylinder 40B reciprocating the 2nd piston 41B constitute, constitute the 1st pressing chamber 42A by cylinder 40A and piston 41A, constitute the 2nd pressing chamber 42B by cylinder 40B and piston 41B.

Have, piston 41A is constituted as with piston 41B again: reciprocating 180 degree of phase difference mutually, when piston 41A has descended (suction refrigeration agent), piston 41B rises and compressed refrigerant.Thus, can seek to be added in load homogenization on the motor 2.In addition, in an embodiment, the diameter of piston 41A, 41b is configured to identical with reciprocating motion length (cylinder diameter and stroke).Thus, in an embodiment, the eliminating volume of each press part 11A and 11B is identical.Have again, piston 41A, 41B utilize the small end of connecting rod 26A, 26B and pin 45 freely swing combination, and utilize the reciprocating power of connecting rod 26A, 26B to move back and forth.

Cylinder head 5H is the member of dish shape, and its inner space is separated into suction chamber 51 and is discharged chamber 52 by partition wall 50.Suction chamber 51 is spaces of supplying with from the outer refrigeration agent of machine, and the refrigeration agent of this suction chamber 51 is fed into each pressing chamber 42A, 42B.Discharge chamber 52 and be the chamber of discharging the refrigeration agent that has been compressed by each pressing chamber 42A, 42B, this refrigeration agent is fed into outside the machine.

At this moment, with suction chamber 51, discharge on the corresponding valve plate 5G in chamber 52 and be formed with suction port 53, exhaust port 54 respectively.In addition, on valve plate 5G, form inlet hole 56 two positions respectively accordingly with suction chamber 51 and each cylinder 40A, 40B, and, tap holes 57 formed two positions respectively accordingly with discharge chamber 52 and each cylinder 40A, 40B.

And, the suction valve 58 that stops up this inlet hole 56 is set in each inlet hole 56, the expulsion valve 59 that stops up this tap hole 57 is set on each tap hole 57.Each valve is the leaf-spring-like valve, and suction valve 58 is installed on the face of pressing chamber 42A, 42B side of valve plate 5G, and expulsion valve 59 is installed on the face of discharge chamber 52 sides of valve plate 5G.Each valve plays the effect of safety check, and refrigeration agent is flowed towards a direction.

In such structure, by motor 2 rotation, thus crank 25A, 25B carries out off-centre with respect to motor reel 24 and rotatablely moves, and moves back and forth with connecting rod 26A, 26B that crank 25A, 25B link.On connecting rod 26A, 26B, link piston 41A, 41B are arranged, when piston 41A descends, the spatial volume of pressing chamber 42A enlarges and generation suction pressure (negative pressure), utilize this suction to press and open suction valve 58, the outer refrigeration agent of machine enters into suction chamber 51 from suction port 53, flows among the pressing chamber 42A through inlet hole 56 then.When piston 41A rose, the refrigeration agent that pressing chamber 42A dwindles and this is indoor was compressed (compressed action).When the pressure of refrigeration agent reached the regulation pressure, expulsion valve 59 was opened, and refrigeration agent is discharged to from tap hole 57 and discharges in the chamber 52.

Equally, when the piston 41B that differs 180 phase differences of spending descended, the spatial volume of pressing chamber 4 2B enlarged and produces suction pressure (negative pressure), utilized this suction to press and opened suction valve 58, the outer refrigeration agent of machine enters suction chamber 51 from suction port 53, flow among the pressing chamber 42B through inlet hole 56 then.When piston 41B rose, pressing chamber 42B dwindled and compresses this indoor refrigeration agent.When the pressure of refrigeration agent reached the regulation pressure, expulsion valve 59 was opened, and refrigeration agent is discharged to from tap hole 57 and discharges in the chamber 52.Then, being discharged to the refrigeration agent of discharging in the chamber 52 by each pressing chamber 42A, 42B compression outputs to outside the machine from exhaust port 54.

Below, the Sealing 13 that is folded between valve plate 5G and the housing body 5A is described.As described above, each member of formation housing 5 is assembled on the housing body 5A by bolt 14 across Sealing 13.At this moment, for the assembled part of cylinder head 5H, valve plate 5G and housing body 5A, folder is established Sealing 13 between cylinder head 5H and valve plate 5G, and between valve plate 5G and housing body 5A also folder establish Sealing 13.Between the Sealing between each member 13 is the sheet material that forms like this: on the surface of cold rolled sheet (SPCC) or corrosion resistant plate sheet metals such as (SUS316), and the elastic material that coating nitrite rubber (NBR) etc. has high temperature high voltage resistant and has oil resistance.

At this, be folded in the Sealing 13 between valve plate 5G and the housing body 5A, also play the top clearance of adjusting each cylinder 40A, 40B, i.e. the effect in the gap between each piston 41A, 41B and the valve plate 5G.Therefore, in the past, Sealing 13 uses the asbestos gasket, for example, and from being divided into 3 grade from thick to thin according to deviation among the pad that produces with 0.8t, select one among them and adjust the top clearance, but owing to can not use asbestos washer, therefore, in the present invention, overlapping many metallic shims constitute the Sealing 13 between valve plate 5G and the housing body 5A for overlapping two metallic shims (the 1st metallic shim 13A, the 2nd metallic shim 13B) in an embodiment.

Two metallic shim 13A, 13B are to apply on the surface of cold rolled sheet (SPCC) or corrosion resistant plate sheet metals such as (SUS316) that nitrite rubber (NBR) etc. has the elastic material of high temperature high voltage resistant and oil resistance and the sheet material that forms also as described above.And, as Fig. 6～shown in Figure 11, two metallic shim 13A, 13B locate in the central to be formed with in the longitudinal direction side by side with each cylinder 40A, 40B corresponding cylinder hole 62A, 62B, two metallic shim 13A, 13B with two cylinder- bore 62A, 62B between a side and the opposite side of corresponding wall, formed respectively the suction oral pore 63 corresponding and discharged oral pore 64 with above-mentioned suction port 53 and exhaust port 54.Have again, around eight positions and with nine positions of total of a position that sucks the wall that the gentle cylinder of oral pore hole 62A, 62B fence up, the positioning hole 67,68 that is formed with the bolt hole 66 that runs through for above-mentioned bolt 14 and is used for running through for locating stud 65,66.This locating stud 65,66 erects and is formed on the housing body 5A.

At this moment, on metallic shim 13A, form Fig. 6～stiffening rib 61 shown in Figure 10, do not make planar (other Sealings 13 also use the metallic shim of band stiffening rib) with on metallic shim 13B, not forming stiffening rib.Particularly, be formed on the stiffening rib 61 on the metallic shim 13A, integral body is made of the inboard stiffening rib 61A around cylinder-bore 62A, 62B and two stiffening ribs of stiffening rib 61B total outside it.In addition, discharge oral pore 64, each bolt hole 66, each positioning hole 67,68 around also form stiffening rib 61C, be positioned at inboard discharge oral pore 64 and three bolts hole 66, be connected with the stiffening rib 61A of inboard, six bolts hole 66 that are positioned at the outside are connected with the stiffening rib 61B in the outside with positioning hole 67,68.At this moment, stiffening rib 61A, 61B are connected with stiffening rib 61C towards the center in each hole 64,66,67,68.Thus, consideration applies uniform power in the attachment portion.In addition, consider that the central part that stiffening rib 61A, 61B are formed as much as possible with metallic shim 13A is the roughly circular-arc of center, be applied to equably on whole stiffening rib 13A, the 13B in order to exert all one's strength.

Have again, around the suction oral pore 63 of pressure step-down, do not form stiffening rib, replace, form the stiffening rib 61D that links inboard stiffening rib 61A and outside stiffening rib 61B in the outside (both sides of length direction) that sucks oral pore 63.Have again, stiffening rib 61C around the stiffening rib 61C of the discharge oral pore 64 that wall on every side wide (space) is narrow and the bolt hole of its both sides 66, be Fig. 8, as shown in Figure 10 half stiffening rib, stiffening rib 61A, the 61B of other parts, 61C, 61D are full stiffening rib as shown in Figure 9.In addition, the stiffening rib 61C around the bolt hole 66 be formed on than the external edge of head of the bolt 14 corresponding part in position of (bolt hole 66 sides) in the inner part.

And in an embodiment, the 1st metallic shim 13A uses pad a kind of of the thickness of slab of 0.38t.This thickness of slab is the thickness that can not have obstacle and carry out stiffening rib processing with comparalive ease.And the 2nd metallic shim 13B has for example prepared that thickness of slab is 0.3t, 0.38t, three kinds of pads of 0.45t.Then, select a kind of metallic shim 13B of thickness of slab, adjust after the whole size, they are clipped between valve plate 5G and the housing body 5A, be assembled into compressor 1 with metallic shim 13A is overlapping.Thus, optimum value is adjusted in the top clearance between piston 41A, 41B and the valve plate 5G.

At this moment, overlapping two metallic shims make the projection of the 1st metallic shim 13A be positioned at the 2nd metallic shim 13B one side.In addition, make the 2nd metallic shim 13B be positioned at valve plate 5G side, the 1st metallic shim 13A is positioned at housing body 5A side.

Like this, by making the 1st metallic shim 13A that is formed with stiffening rib 61 and not forming that the 2nd metallic shim 13B of stiffening rib is overlapping to constitute the Sealing 13 that is located between valve plate 5G and the housing body 5A, therefore, the thickness of the 2nd metallic shim 13B by selecting not form stiffening rib also uses the 2nd metallic shim 13B, can adjust the top clearance of piston 41A, 41B.

At this moment, in the time of selecting to form the thickness of slab of metallic shim 13A of stiffening rib 61,, then be difficult to form stiffening rib 61 if the thickness of slab of metallic shim 13A is big.Promptly, according to the present invention, the 1st metallic shim 13A uses can be than the pad of the thickness of slab that is easier to form stiffening rib 61, carry out the adjustment of top clearance by the thickness of slab of selecting the 2nd metallic shim 13B, can use metallic shim easily to adjust the top clearance on one side, process the sealing of also carrying out reliably between valve plate 5G and the housing body 5A Yi Bian carry out stiffening rib without barrier.In addition, when the thickness of slab that forms the metallic shim 13A of stiffening rib 61 by selection is adjusted the top clearance, when the thickness of slab of metallic shim 13A is crossed when thin, the spring constant of metallic shim 13A self diminishes, can not obtain the surface pressure that needs even formed stiffening rib 61, but, in the present invention, the thickness of slab that does not form the 2nd metallic shim 13B of stiffening rib by selection is adjusted the top clearance, therefore, the thickness of slab of the metallic shim 13A that forms stiffening rib 61 is thinned to more than necessity, just can guarantees spring constant and make the surface pressure that produces by stiffening rib constant, can seek to improve sealing.In addition,, therefore the complicated of shape can also be easily tackled, also maintenance can be easily changed simultaneously because the degrees of freedom of the thickness of slab of two metallic shim 13A, 13B increases.

In addition, because overlapping two metallic shim 13A, 13B make the projection summit of the stiffening rib 61 of the 1st metallic shim 13A be positioned at the 2nd metallic shim 13B one side, therefore, the projection summit of the stiffening rib 61 of the 1st metallic shim 13A and the 2nd metallic shim 13B butt.Thereby, to compare with the situation of the 2nd metallic shim 13B butt with the recessed side that makes stiffening rib 61, the mutual crimp strength of two metallic shim 13A, 13B increases, and sealing between the two uprises.

Have again, because so that the 2nd metallic shim 13B is positioned at valve plate 5G side, make the 1st metallic shim 13A be positioned at housing body 5A side ground overlapping two metallic shim 13A, 13B, therefore, how to do all is that the 1st metallic shim 13A that is formed with stiffening rib 61 is crimped on the low housing body 5A of surface accuracy, can guarantee that the sealing between metallic shim 13A and the housing body 5A is good.

At this, when making the 1st metallic shim 13A be positioned at valve plate 5G side, when making the 2nd metallic shim 13B be positioned at housing body 5A side,, to compare with embodiment because the low housing body 5A side of surface accuracy is the plane, sealing reduces.In addition, under this state, when the projection of the stiffening rib 61 that makes the 1st metallic shim 13A is positioned at valve plate 5G side, because the depressed portions of stiffening rib 61 is between two metallic shim 13A, the 13B, therefore, compare the crimp strength step-down that metallic shim 13A, 13B are mutual with embodiment.Have again, when on two metallic shim 13A, 13B, all having formed stiffening rib, in any case owing to all can produce the dislocation of the stiffening rib of the stiffening rib of metallic shim 13A side and metallic shim 13B side when overlapping, therefore, it is unstable that sealing becomes.Or embodiment's configuration and overlapping best therefore.

Have again, in an embodiment, owing on the 1st metallic shim 13A, formed inside and outside two stiffening rib 61A, 61B, therefore, can can further improve the sealing between valve plate 5G and the housing body 5A in the high part of crimp strength of the outside of cylinder 40A, 40B (cylinder- bore 62A, 62B) dual formation metallic shim 13A, 13B.

In addition, the outside at the suction oral pore 63 of the 1st metallic shim 13A corresponding with the suction port 53 of valve plate 5G is formed with the stiffening rib 61D that links inside and outside two stiffening rib 61A, 61B, therefore, in low suction port 53 parts of pressure, can simplify the shape of stiffening rib 61 and improve processability.

On the other hand, around bolt hole 66 that the corresponding discharge oral pore 64 of exhaust port the 1st metallic shim 13A and valve plate 5G 54 and bolt 14 are connected, be formed with stiffening rib 61C, therefore, can guarantee exhaust port 54 parts that pressure uprises and the sealing of bolt 14 parts.

Particularly, since the stiffening rib 61C around the bolt hole 66 be formed on than the corresponding part in bolt 14 external edge of head position in the inner part, therefore, can make stiffening rib 61C, can further improve the sealing around the bolt 14 with corresponding with the fastening scope of bolt 14.

But, each metallic shim in the past forms with respect to the centre line C L symmetry, this centre line C L runs through between cylinder-bore 62A, the 62B, and will be respectively with two cylinder- bore 62A, 62B between the suction oral pore 63 that forms on a side of corresponding wall and the opposite side the center and discharge the central link of oral pore 64.That is, each metallic shim forms its shape and each hole (two cylinder-bore, suck oral pore, discharge oral pore, each bolt hole and each positioning hole) with respect to the centre line C L symmetry.At this moment, if use the pad that is not formed with stiffening rib (also comprising the 2nd metallic shim 13B) in the past, then owing to do not need special differentiation table back of the body two sides, therefore no problem, but if use the 1st pad that is formed with stiffening rib 61, its one side (for example surface) is the raised sides of stiffening rib 61, another side (for example back side) is the recessed side of stiffening rib 61, therefore, as described above, the configuration on the table of the 1st pad back of the body two sides has appreciable impact to sealing.

But, in above-mentioned formation in the past, because the shape of the 1st pad and each hole with respect to the centre line C L symmetry, therefore only have stiffening rib 61 can distinguish the table back of the body two sides of the 1st pad.Therefore,, also can install, thereby table back of the body two sides might be done instead to install even the table of the 1st pad back of the body two sides is opposite.Thus, the back side that becomes the 1st metallic shim of stiffening rib 61 recessed sides is positioned at the 2nd metallic shim one side, mutual crimp strength step-down of two metallic shims etc. occurs, sealing is had remarkable dysgenic problem.

Therefore, among the present invention, the hole 67,68 of each locating stud 65,65 usefulness is formed at respectively when metallic shim 13A, 13B are shown to carry on the back upset with respect to centre line C L different position mutually.In the present embodiment, only do following change, an alignment pin position that is about to be located in the locating stud 65,65 on the housing body 5A remains unchanged, and different mutually position when the position of another locating stud is formed on table back of the body upset with metallic shim 13A, 13B, with respect to the asymmetric position of the centre line C L of metallic shim 13A, 13B, so just can show to carry on the back the differentiation on two sides.That is, in the present embodiment, the hole 67 of a locating stud 65 usefulness still is formed on original position, and the hole 68 of another locating stud 65 usefulness is formed on the asymmetric position, position with respect to centre line C L and hole 67.

At this, be formed on two cylinder- bore 62A, 62B, the suction oral pore 63 of metallic shim 13A, 13B and discharge oral pore 64 according to being formed on each cylinder 40A, 40B in the housing body 5A, being formed on suction port 53 on the valve plate 5G and the position of exhaust port 54 is determined, therefore, these being configured in respect to the asymmetric position of centre line C L is to carry out design alteration significantly to compressor 1.In addition, the a plurality of bolts hole 66 that are formed on metallic shim 13A, 13B to be configured in respect to the asymmetric position of centre line C L, also need to change the position of the not shown bolt hole that on a plurality of members such as housing body 5A and valve plate 5G, cylinder head 5H, forms, therefore, be to carry out design alteration significantly to compressor 1 too.

Therefore, as described herein, change the position of another locating stud 65 of housing body 5A, the hole 67,68 of each locating stud 65,65 usefulness is formed at when the table back of the body upset of metallic shim 13A, 13B with respect to centre line C L different position mutually, thereby can prevents from the table back of the body of metallic shim 13A is done instead to install.That is, when the table back of the body upset of metallic shim 13A, 13B, the locating stud 65,65 of housing body 5A can not be inserted, therefore, the problem that the table back of the body lane of metallic shim 13A, 13B is instead installed can be eliminated really.

Therefore, as mentioned above, the projection summit of stiffening rib 61 that will be formed with the 1st metallic shim 13A of stiffening rib 61 is configured to be positioned at the 2nd metallic shim 13B one side really, under this state, so that the 2nd metallic shim 13B is valve plate 5G side, the 1st metallic shim 13A is the overlapping two metallic shim 13A of mode, the 13B of housing body 5A side, thereby can further improve the sealing between valve plate 5G and the housing body 5A.As above being described in detail, according to the present invention, ground, table back of the body two sides that can not can do anti-the 1st metallic shim 13A is installed pad, is guaranteed sealing reliably.Thus, can improve the reliability of compressor 1.

In addition, in the present embodiment, change the locating stud of being located on the housing body 5A 65, the invariant position of a locating stud in 65, promptly, make the position of a locating stud 65 that passes positioning hole 67 keep original position, and change the position of another locating stud 65, make and be formed on metallic shim 13A, two positioning holes 67 on the 13B, 68 become different position mutually when the upset of the table back of the body, but the invention is not restricted to this, to two locating studs 65,65 position all changes, make and be formed on metallic shim 13A, two positioning holes 67 on the 13B, 68 become different position mutually when the upset of the table back of the body, this also is effective.

Embodiment 2

In addition, even under the situation that as above-mentioned embodiment, changes 1 locating stud 65 position, be not limited to dispose positioning hole 68 continuously with outside stiffening rib 61B, for example reach as shown in Figure 13 as Figure 12, positioning hole is configured in the inboard of outside stiffening rib 61B, make two positioning holes that are formed on metallic shim 13A, the 13B become different position mutually when the upset of the table back of the body, so, the present invention also is effective.In addition, among Figure 12 and Figure 13, having marked with the member of above-mentioned Fig. 1 to Figure 11 same reference numerals is the member that plays identical or similar effect or effect, omits its explanation at this.

Present embodiment be formed on the inboard that positioning hole 69 on the 1st metallic shim 13A is positioned at outside stiffening rib 61B, promptly not continuous with stiffening rib 61B, therefore, do not need as above-mentioned embodiment, around positioning hole 69, to form stiffening rib 61C.

So, each locating stud 65,65 is being arranged on the housing body 5A, make when the position in the hole 67 be formed at a locating stud 65 usefulness on the metallic shim 13A is stiffening rib 61B inboard for the position with the hole 69 of the continuous position of stiffening rib 61B, another locating stud 65 usefulness that the hole 67,69 of each locating stud 65,65 usefulness of metallic shim 13A also is formed at when the upset of the table back of the body different position mutually respectively.Thus, when the table back of the body upset of metallic shim 13A, 13B, each metallic shim 13A, 13B can not be enclosed within on the locating stud 65,65 of housing body 5A, therefore, identical as above-mentioned embodiment, can eliminate the problem that the table back of the body lane of metallic shim 13A, 13B is instead installed really.

Embodiment 3

Below, with Figure 14 and Figure 15 the valve plate 5G that is folded in compressor 1 and another embodiment of the Sealing between the housing body 5A (the 1st metallic shim 13A and the 2nd metallic shim 13B) are described.In the present embodiment, make the position maintenance invariant position in the past of a locating stud 65 that runs through positioning hole 67, and change the position of another locating stud 65, the feasible positioning hole that is formed on the 1st pad 13A is positioned at the outside of outside stiffening rib 61B.In addition, the embodiment's 1 that employed compressor 1 and Fig. 1 to Fig. 5, Fig. 8 in the present embodiment, Figure 10 are illustrated structure is identical, and is identical with the foregoing description (embodiment 2), omits its explanation at this.In addition, among Figure 14 and Figure 15, having marked with the member of above-mentioned Fig. 1 to Figure 13 same reference numerals is the member that plays identical or similar effect or effect, omits its explanation at this.

The positioning hole that is formed at the 1st metallic shim 13A 70 of present embodiment is positioned at the outside of outside stiffening rib 61B, and is promptly same as the previously described embodiments, not continuous with stiffening rib 61B, therefore, need not form stiffening rib 61C around positioning hole 70.

So, each locating stud 65,65 is being arranged on the housing body 5A, when making the position in the hole 67 be formed at a locating stud 65 usefulness on the metallic shim 13A be the outside of stiffening rib 61B for the position with the hole 70 of the continuous position of stiffening rib 61B, another locating stud 65 usefulness, the hole 67,70 of each locating stud 65,65 usefulness of metallic shim 13A also is formed at when the upset of the table back of the body different position mutually respectively.Thus, when the table back of the body upset of metallic shim 13A, 13B, each metallic shim 13A, 13B can not be enclosed within on the locating stud 65,65 of housing body 5A, therefore, identical as above-mentioned embodiment, can eliminate the problem that the table back of the body lane of metallic shim 13A, 13B is instead installed really.

In addition, in the various embodiments described above, two locating studs are set on housing body 5A, on each metallic shim 13A, 13B, form the positioning hole corresponding respectively with each locating stud 65,65, but among the present invention, for being formed with two locating studs metallic shim at least, as long as different position mutually when each locating stud is configured in the upset of the table back of the body with the hole with the hole, be not limited to present embodiment and form 2 positioning holes like that, in the hole that also can form on the metallic shim more than 3.

In addition, in the various embodiments described above, all be locating stud 65,65 to be set in the mode that a side and opposite side in centre line C L form the hole of 1 locating stud 65 usefulness respectively.So, use the hole by forming at least 1 locating stud at a side of the centre line C L of the 1st metallic shim 13A and opposite side, can carry out more accurately with respect to a side of centre line C L and the location of opposite side, but the present invention is not limited to this, be located at the position of the locating stud on the housing body 5A so long as make each locating stud that is formed at least on the 1st metallic shim 13A use the hole, be not limited to each embodiment's position for when the table back of the body overturns, getting final product with respect to the mutual different position of centre line C L.For example, even form 2 positioning holes in the side with respect to centre line C L, the present invention also is effective.

Embodiment 4

In addition, Figure 16 is the local vertical profile side view of decomposition of the example of the reciprocating type half airtight type of expression V-type four-cylinder compressor 1.Form four cylinders 40 this moment on housing body 5A, contain piston 41 respectively.And, overlapping above-mentioned same metallic shim 13A, the Sealing 13 that 13B forms are set between the valve plate 5G of housing body 5A and each cylinder head 5H.Even in such V-type compressor 1, the present invention also is effective.

In addition, in the various embodiments described above, two metallic shims (the 1st metallic shim 13A and the 2nd metallic shim 13B) are overlapping and be folded between valve plate 5G and the housing body 5A, but be not limited thereto, also can be with the overlapping top clearance of adjusting of the metallic shim more than 3 (comprise all is identical thickness of slab or some or whole different situations of thickness of slab).In this case, certainly, preferably still on the metallic shim of the thickness of slab that can easily form stiffening rib, form stiffening rib, to adopt in housing body 5A side be the metallic shim that formed stiffening rib, in the raised sides of its stiffening rib for not forming the metallic shim of stiffening rib and being the such overlap mode of metallic shim that has formed stiffening rib in its valve plate 5G side.

Have again, in an embodiment, the thickness of slab that does not form the 2nd metallic shim 13B of stiffening rib 61 by selection is adjusted the top clearance, but also can prepare the 1st metallic shim 13A that is formed with stiffening rib 61 of multiple thickness of slab in advance, therefrom selects and make to be used for adjusting the top clearance.

And, in an embodiment, be that example has illustrated the present invention with the half airtight type compressor of twin-rotor housing or four cylinder body single-stages, but be not limited thereto, even for multistage compression formula (particularly using carbon dioxide coolant) half airtight type compressor, the present invention should also be effective.In addition, in each embodiment, be being that example has illustrated the present invention by making piston in cylinder, move back and forth the reciprocating type half airtight type compressor that refrigeration agent is carried out compressed action, but technological scheme 1 is not limited to reciprocating type half airtight type compressor, so long as at least with bolt with a plurality of members across Sealing be fixed on the housing body and constitute the compressor of housing, no matter be what kind of compressor, the present invention is effective.

Claims (2)

1. compressor is fixed on a plurality of members with bolt and constitutes housing on the housing body and form across Sealing, it is characterized in that,

Above-mentioned Sealing is made of metallic shim, is formed with stiffening rib and at least two locating studs are used the hole on this metallic shim, and each locating stud is respectively formed at the position that becomes mutual diverse location will the upset of the table back of the body time with the hole.

2. a compressor is to carry out compressed action by the piston that moves back and forth in the cylinder of the housing body that constitutes housing, and with bolt cylinder head is fixed on across Sealing and valve plate and forms on the above-mentioned housing body, it is characterized in that,

Be formed with at least two locating studs and constitute the above-mentioned Sealing that is arranged between above-mentioned valve plate and the above-mentioned housing body a plurality of with the metallic shim in hole is overlapping, be formed with stiffening rib on the 1st metallic shim in these a plurality of metallic shims, on the 2nd metallic shim, do not form stiffening rib, above-mentioned a plurality of metallic shims are overlapping, make the projection summit of stiffening rib of above-mentioned the 1st metallic shim be positioned at above-mentioned the 2nd metallic shim side, and above-mentioned each locating stud is respectively formed at the position that becomes mutual diverse location will the upset of the table back of the body time with the hole.

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