DE102006000038A1 - Thermal protection structure for use in compressor has heat insulation provided to adhere in chamber formation wall surface of valve plate oppositely facing suction chamber - Google Patents

Abstract

A heat insulation (44) is provided to adhere in the chamber formation wall surface (43) of a valve plate (14) oppositely facing the suction chamber (27). The valve plate is set as the partition between the suction chamber and discharge chamber (28).

Description

The The present invention relates to a heat insulating structure in one Compressor with a cover housing, which has a suction chamber or an outlet chamber.

The Temperature of a cooling gas, that from the outside a compressor is introduced into the suction chamber in the compressor will affect the performance of the compressor. When the temperature the cooling gas, which is introduced into the suction chamber becomes higher, the density of the cooling gas lower, which is drawn into the compression chamber, with the result that the performance of the compressor is reduced.

The unaudited Japanese Utility Model No. 2-31382 and Japanese Unexamined Patent Application No. 5-126049 discloses a compressor in which the valve connection plate between the cylinder head and the cylinder block is held, and a cylindrical heat insulating member covers the peripheral surface each suction port formed in the valve port plate is. A flanged flat plate is integral with the heat insulating element educated. The flanged flat plate is part of a Wall that forms the suction chamber in the cylinder head. By doing Compressor in the publication Publication No. 2-31382, the heat insulating member which is the Flanged flat plate has formed of ceramic. By doing Compressor described in publication no. 5-126049, the heat insulating member which is the Flanged flat plate has, made of resin ausgebil det. Such heat insulating elements are effective in that cooling gas in the suction chamber not heated becomes.

Of Further, in the compressor disclosed in Publication No. 2-31382 is a copper seal mainly held between the valve port plate and the cylinder head, and an asbestos heat insulating member is between the flanged flat plate and the annular surrounding Wall held as part of the seal. In other words, becomes the asbestos heat insulating element held between the cylinder head and the cylinder block. By doing Compressor in the publication No. 5-126049 is the flat face of the valve port plate flush with the flat surface the flanged flat plate. In addition, the publication discloses No. 2-31382 an alternative embodiment in which the flat area flanged flat plate is flush with the flat surface of the Copper seal.

however it is difficult, as in the publications Publication No. 2-31382 and No. 5-126049 discloses the flat surface of Valve connection plate or gasket flush with the flat surface of the Flanged flat plate to make. The adjoining area or abutting portion between these neighboring areas is held between the cylinder head and the cylinder block, so that a step between the adjacent flat surfaces is a problem with the sealing performance.

In the compressor, which is the asbestos heat insulating element used in publication no. 2-31382, the asbestos heat insulating member is outside exposed by a space between the outer periphery of the cylinder head and the outer circumference of the cylinder block and is also exposed in the suction chamber. That is, that thermal insulating seals the gap between the end of the outer circumference of the cylinder head and the end of the outer circumference of the cylinder block. According to the sealing structure, the such a heat insulating element used, however, the Wärmeisolierelement plastically deformed, held tightly between the cylinder head and the cylinder block is, whereby its sealing performance is reduced. In the same Way, in the case of using the Harzwärmeisolierelements, the in the publication No. 6-126049, the heat insulating element deforms plastically, held tightly between the cylinder head and the cylinder block is, thus reducing its sealing performance is reduced.

The The present invention is directed to improving the thermal insulation efficiency directed to the suction chamber and / or the outlet chamber in the compressor, without its sealing performance is reduced.

According to the present Invention has a thermal insulation structure in a compressor, a cover housing, a separator and a Heat insulating. The cover housing has a suction chamber and / or an outlet chamber formed in it. The separator separates a compression chamber from the suction chamber and / or the outlet chamber. The heat insulating member covers one Part of a wall surface of the separator which is adjacent to the cover housing. The heat insulating element covers only one chamber wall surface the separating element adjacent to the suction chamber and / or the Outlet chamber is.

Other Aspects and advantages of the invention will become apparent from the following description, together with the attached drawings, exemplifying the principles of the invention.

The Features of the present invention which are believed to be they are new, are with verbosity in the attached claims explained. The invention, together with its objects and advantages, can best be explained by reference to the following description of the Time preferred embodiments together with the accompanying drawings, in which:

1 a longitudinal cross-sectional view of a compressor according to a first preferred embodiment of the present invention;

2A is a longitudinal partial sectional view of the compressor according to the first preferred embodiment of the present invention;

2 B an enlarged longitudinal sectional view of the compressor according to the first preferred embodiment of the present invention;

3A a cross-sectional view taken along the line II in FIG 2A is;

3B an enlarged partial cross-sectional view of 3A is;

4 a cross-sectional view taken along the line II-II in 2A is;

5 a cross-sectional view taken along the line III-III in 2A is;

6 Fig. 11 is an exploded perspective view of a valve port plate and heat insulating members according to the first preferred embodiment of the present invention;

7 an exploded perspective view of a rear housing and heat insulating elements according to the first preferred embodiment of the present invention;

8th is a longitudinal partial cross-sectional view of a compressor according to a second preferred embodiment of the present invention;

9 is a longitudinal partial cross-sectional view of a compressor according to a third preferred embodiment of the present invention;

10 is a longitudinal partial cross-sectional view of a compressor according to a fourth preferred embodiment of the present invention; and

11 is a longitudinal partial cross-sectional view of a compressor according to a fifth preferred embodiment of the present invention.

The following describes the first preferred embodiment of a compressor 10 variable displacement according to the present invention with reference to 1 to 7 ,

Referring to 1 is an aluminum cylinder 11 with a front aluminum housing 12 connected at its front end. The cylinder 11 is with a rear aluminum housing 13 as a cover case at its rear end through an iron valve port plate 14 , an iron valve connection plate 15 and iron seals 17A . 17B connected. The cylinder 11 , the front housing, the rear housing, the valve port plate 14 and the seals 17A . 17B are fastened by bolts or screws. Referring to 7 has the case 13 a variety of threaded sections 481 which is at its outer peripheral wall 48 are formed. The screws 32 are in these threaded sections 481 screwed. The cylinder 11 , the front housing 12 and the rear housing 13 together form the housing assembly of the compressor 10 out.

Referring to 1 is a rotary shaft 18 rotatable by radial bearings 19 . 20 through the front housing 12 and the cylinder 11 supported, which is a crank chamber 121 define. The rotary shaft 18 stands outward from the crank chamber 121 and is coupled for rotation with a vehicle engine that is an external drive source through a pulley (not shown) and a belt (not shown).

An approach plate 21 is at the rotary shaft 18 attached. A swash plate 22 is through the rotary shaft 18 supported to be slidable in the axial direction of the rotary shaft 18 and to be tiltable. The swash plate 22 has guide pins 24 that are attached to her. The heads of the guide pins 24 are slidable in the respective guide holes 211 fitted with the lug plate 21 are formed. Through the interaction of the pilot holes 211 and the guide pins 24 is the swash plate 22 relative to the axial direction of the rotary shaft 18 tiltable and integral with the rotary shaft 18 rotatable.

If the center of the swash plate 22 to the lug plate 21 moves, increases the inclination angle of the swash plate 22 , The maximum angle of inclination of the swash plate 22 is due to the contact between the lug plate 21 and the swash plate 22 regulated. The position of the swash plate 22 passing through the solid line in 1 is displayed, shows a state when the swash plate 22 is arranged at the maximum inclination angle. If the center of the swash plate 22 to the cylinder 11 moved, the inclination angle of the swash plate increases 22 from. The position of the swash plate 22 , which by the ge scored line in 1 is displayed, shows a state when the swash plate 22 is arranged at the minimum inclination angle.

A variety of cylinder bores 111 is through the cylinder 11 formed through, and each cylinder bore houses a piston 25 , A rotation of the swash plate 22 gets into a reciprocating motion of the pistons 25 through a pair of shoes 26 transformed. The pistons 25 move in the respective cylinder bores 111 back and forth. Every piston 25 defines a compression chamber 112 in the cylinder bore 111 ,

Regarding 1 and 5 has the rear housing 13 a suction chamber 27 and an outlet chamber 28 that formed in it and with a circular partition 29 are separated. The suction chamber 27 , which is a part of a suction pressure region, is at the outside in the rear housing 13 located to the outlet chamber 28 that is part of an outlet pressure region about the axis 181 the rotary shaft 18 to surround around. Regarding 1 are a valve plate 30 and a retaining element 31 with the valve connection plate 14 (which corresponds to a separator in this embodiment) in the discharge chamber 28 connected. The valve connection plate 14 separates the compression chamber 112 from the suction chamber 27 and the outlet chamber 28 , The seal 17A , the valve plates 15 . 30 and the retaining element 31 are through the bolts or screws 50 and the nuts 51 for connection to the valve connection plate 14 attached.

Regarding 2 B have the seals 17A . 17B one metal plate each 121 and rubber suits 172 . 173 on the opposite sides of the metal plate 171 are formed. The seal 17A prevents coolant in the compression chamber 112 along the valve plate 15 escapes. The seal 17B is between the valve connection plate 14 and the end of the outer peripheral wall 48 the rear housing 13 and between the valve port plate 14 and the end of the partition 29 the rear housing 13 adjacent to the suction chamber 27 held. The seal 17B prevents coolant in the outlet chamber 28 through the gap between the valve port plate 14 and the partition 29 in the suction chamber 27 escapes. The seal 17B also prevents refrigerant gas in the suction chamber 27 through the gap between the valve port plate 14 and the outer peripheral wall 48 escapes to the outside of the compressor.

Regarding 2A are suction connections 141 through the valve connection plate 14 and the seal 17B formed through, and outlet ports 142 are through the valve port plate 14 and the valve plate 15 formed through. The valve plate 15 has intake valves 151 that are formed in it, and the valve plate 30 has exhaust valves 301 who are trained in it. Gaseous coolant in the suction chamber 27 gets into the compression chamber 112 through the suction port 141 pulled by regurgitation or opening the intake valve 151 when the piston 25 yourself in 1 moved from the right side to the left side. The degree of opening of the intake valves 151 becomes due to the contact with the bottom or the bottom of a Positionsregulieraussparung 113 regulated. Gaseous coolant entering the compression chamber 112 is pulled, becomes the outlet chamber 28 through the outlet port 142 omitted by regurgitation or opening the exhaust valve 301 when the piston 25 in 1 moved from the left side to the right side. The degree of opening of the exhaust valves 301 is due to the contact with the retaining element 31 regulated.

An annular recess 143 is on the surface of the valve connection plate 14 adjacent to the valve plate 15 formed the intake valves 151 has to the suction connections 141 to surround. The area of the valve connection plate 14 passing through the recess 143 surrounded, works as a valve seat for the intake valves 151 , Lubricating oil that flows with coolant tends to pollute the intake valves 151 with the valve connection plate 14 tight or tight to touch, so the intake valves 151 heavy from the valve port plate 14 to be separated. With the recess 143 are the intake valves 151 however slightly from the valve port plate 14 to separate.

The wall surface 52 the valve connection plate 14 which is adjacent to the outlet chamber 28 is, has a recess 53 trained in itself. The depth of the soil or underside 531 the recess is at every section of the floor 531 constant. The floor 531 and the wall surface 52 are part of the wall surface, which is the outlet chamber 28 formed. The floor 531 is a part of the wall surface of the valve connection plate 14 which is adjacent to the outlet chamber 28 is. The recess 53 is formed so that a valve seat 521 around the outlet ports 152 remains around. The valve seat 521 is about the outlet connections 142 around in the area of the wall surface 52 Located by the savings 53 is surrounded. The exhaust valves 301 open or close the outlet ports 142 so that they are in contact with the valve seat 521 come or move away from it.

A plate-like heat insulating element 54 is in the recess 53 contain. The thickness of the heat insulating element 54 is set smaller than the depth of the recess 53 , The heat insulating element 54 that is adjacent to the outlet chamber 28 is, is between the valve port plate 14 and the valve plate 30 held. Regarding 3A is the recess 53 inside the partition 29 located, from view in the direction of the axis 181 the rotary shaft 18 , That is, the heat insulating member 54 is inside the partition 29 located, from view in the direction of the axis 181 the rotary shaft 18 ,

Regarding 6 has the heat insulating element 54 holes 541 that are formed through it. Regarding 3B have the holes 541 a larger diameter than the peripheral wall surface 532 the recess 53 that the valve seat 521 surrounds. The peripheral wall surface 532 is from the peripheral wall of the hole 541 spaced. In this way, an annular groove 55 between the peripheral wall surface 532 and the peripheral wall of the hole 541 trained (or remaining). Lubricating oil that flows with coolant touches the exhaust valves 301 with the valve connection plate 14 tight, leaving the exhaust valves 301 heavy from the valve port plate 14 can be separated. On the other hand, the annular groove helps 55 , the exhaust valves 301 from the valve connection plate 14 to separate.

Regarding 2A is the surface (the rubber suit 173 ) of the seal 17B adjacent to the suction chamber 27 is, with a plate-like heat insulating element 56 covered. That is, the heat insulating member 56 adjacent to the suction chamber 27 is, covers the wall surface 43 the valve connection plate 14 adjacent to the suction chamber 27 is.

In this embodiment, the heat insulating elements 54 . 56 made of synthetic resin. The thermal insulation elements 54 . 56 have a greater thickness than the rubber layers 172 . 173 the seals 17A respectively. 17B , If, for example, the rubber suits 172 . 173 have a thickness of 0.02 mm to 0.07 mm, should the heat insulating elements 54 . 56 have a thickness of 0.3 mm to 1 mm. The thickness of 0.02 mm to 0.07 mm of the rubber coatings 172 . 173 is effective to plastic deformation of the rubber coatings 172 . 173 to avoid when using the screws 32 be attached while ensuring a high sealing performance.

Regarding 1 has the rear housing 13 a suction passage 33 and an outlet passage 34 at its end wall 49 , The intake passage 33 , the gaseous coolant in the suction chamber 27 initiates, and the outlet passage 34 , the gaseous coolant from the outlet chamber 28 supplies are with an external coolant circuit 35 connected. The external coolant circuit 35 has a capacitor 36 to extract heat from the coolant, a fixed throttle 37 , an evaporator 38 for transferring heat of the environment to the coolant and an accumulator 39 , The accumulator 39 is there to only gaseous coolant to the compressor 10 to deliver. Coolant in the outlet chamber 28 flows into the suction chamber 27 through the outlet passage 34 , the condenser 36 , the fixed throttle 37 , the evaporator 38 , the accumulator 39 and the intake passage 33 ,

The outlet chamber 28 and the crank chamber 121 are through the outlet passage 34 and a feed passage 40 connected. On the other hand, the crank chamber 121 and the suction chamber 27 through a bleed passage 41 connected. Coolant in the crank chamber 121 flows out of the suction chamber 27 through the bleed passage 41 through out.

An electromagnetic control valve 42 is in the feed passage 40 located. The control valve 42 closes its valve during non-energization to block flow of the coolant so that coolant does not escape from the outlet chamber 28 to the crank chamber 121 through the Zuführpassage 40 is fed through. Coolant in the crank chamber 121 flows into the suction chamber 27 through the bleed passage 41 through, allowing the pressure in the crank chamber 121 decreases. As a result, the inclination angle of the swash plate increases 22 and the displacement of the compressor increases. The control valve 32 during its energization, opens its valve to allow coolant to flow through it, allowing coolant from the outlet chamber 28 to the crank chamber 121 through the Zuführpassage 40 is fed through. As a result, the pressure in the crank chamber increases 121 , with the result that the angle of inclination of the swash plate 22 is reduced, and thus the displacement or displacement of the compressor is reduced.

Regarding 2A is a second heat insulating element 44 which is different than the heat insulating element 56 adjacent to the suction chamber 27 is loose in the suction chamber 27 fitted. The second heat insulating element 44 adjacent to the suction chamber 27 is made of synthetic resin. The second heat insulating element 44 has a chamber heat insulating section 441 and a passage heat insulating portion 442 , The chamber heat insulating section 441 covers the inner wall surface 482 the outer peripheral wall 48 the rear housing 13 , the inner wall surface 491 the end wall 49 the rear housing 13 and the outer peripheral wall surface 291 the partition 29 , The passage heat insulating section 442 covers the peripheral wall surface 331 , which in itself the suction passage 33 has trained. In other words, the second heat insulating member covers 44 the inner wall surface adjacent to the suction chamber 27 is in the rear housing 13 that the suction chamber 27 and the intake passage 33 has trained in itself. The inner wall surface has the inner wall surface 482 . 491 , the outer wall surface 291 and the peripheral wall surface 331 ,

A variety of leaf springs 45 is between the end wall 49 the rear housing 13 and the chamber heat insulating portion 441 arranged. In this embodiment, the number of leaf springs 45 three, as in 7 is shown. The leaf springs 45 are in the recesses 492 housed in the inner wall surface 491 the end wall 49 are formed. The leaf springs 45 urge the second heat insulating element 44 to the valve port plate 14 out. The ends 443 . 444 the Kammerwärmeisolierabschnitts 441 become against the heat insulating element 56 by the urging force of the leaf springs 45 pushed, causing the gap between the ends 443 . 444 and the heat insulating member 56 is sealed. The leaf springs 45 are elastic elements as urging means, the heat insulating element 44 against the heat insulating element 56 press.

A second heat insulating element 46 which is different than the heat insulating element 54 leading to the outlet chamber 28 is made of synthetic resin and loose in the outlet chamber 28 fitted. The second heat insulating element 46 has a chamber heat insulating section 461 and a passage heat insulating portion 462 , The chamber heat insulating section 461 covers the inner wall surface 494 the end wall 49 and the inner peripheral wall surface 292 the partition 29 , The passage heat insulating section 462 covers the peripheral wall surface 341 , which in itself the outlet passage 34 has trained. In other words, the second heat insulating member covers 46 the inner wall surface adjacent to the outlet chamber 28 is in the rear housing 13 that the outlet chamber 28 and the outlet passage 34 has trained in itself. The inner wall surface has the inner wall surface 494 , the inner peripheral wall surface 292 and the peripheral wall surface 341 ,

A variety of leaf springs 47 is between the end wall 49 the rear housing 13 and the chamber heat insulating portion 461 arranged. In this embodiment, the number of leaf springs 47 three, as in 7 is shown. The leaf springs 47 are in the recesses 493 housed in the inner wall surface 494 the end wall 49 are formed. The leaf springs 47 urge the second heat insulating element 46 to the valve port plate 14 out. The ends 463 the Kammerwärmeisolierabschnitts 461 become against the heat insulating element 54 by the urging force of the leaf springs 47 pressed, reducing the gap between the ends 463 and the heat insulating member 54 is sealed. The leaf springs 47 are elastic elements as urging means, the heat insulating element 46 against the heat insulating element 54 press. In this embodiment, carbon dioxide is used as the coolant.

• (1-1) Das Wärmeisolierelement 54, das die Oberfläche (den Boden 531) der Ventilanschlussplatte 14 bedeckt, die zu der Auslasskammer 28 benachbart ist, verbessert die Wärmeisolierleistung in der Auslasskammer 28. Das Wärmeisolierelement 54 bedeckt nur die Wandfläche (den Boden 531) der Ventilanschlussplatte 14, die benachbart zu der Auslasskammer 28 ist. Das Wärmeisolierelement 54 wird nicht zwischen der Trennwand 29 des hinteren Gehäuses 13 und der Ventilanschlussplatte 14 gehalten. Demzufolge tritt kaum eine Verschlechterung der Abdichtleistung aufgrund einer plastischen Deformation des Wärmeisolierelements 54 auf.
• (1-2) Ein Teil des Wärmeisolierelements 54, der in der Aussparung 53 beherbergt ist, ist mit der Ventilplatte 30 bedeckt, die die Auslassventile 301 hat. Die Ventilplatte 30 ist mit der Ventilanschlussplatte 14 mit dem Rückhalteelement 31 verbunden durch Befestigen der Schrauben 50. Demzufolge wird durch die Ventilplatte 30 verhindert, dass das Wärmeisolierelement 54 sich von der Aussparung 53 löst bzw. entfernt. Die Struktur, in der die Ventilplatte 30 (die Auslassventile 301) das Wärmeisolierelement 54 bedeckt, das in der Aussparung 53 beherbergt ist, ist bevorzugt für ein Zurückhalten des Wärmeisolierelements 54 bei einer vorbestimmten Position, d.h. in der Aussparung 53.
• (1-3) Wenn das plattenartige Wärmeisolierelement 54 eine Dicke hat, die größer ist als die Tiefe des Bodens 531 der Aussparung 53, steht das Wärmeisolierelement 54 von der Aussparung 53 hervor. In diesem Fall ist die Oberfläche des Wärmeisolierelements 54, die in die Auslasskammer 28 frei liegt, höher gelegen als die Ventilsitze 521. In solch einem Zustand ist ein dichter Kontakt zwischen den Auslassventilen 301 und den Ventilsitzen 521 verschlechtert, so dass die Abdichtleistung zwischen den Auslassventilen 301 und den Ventilsitzen 521 verschlechtert ist, wenn die Auslassanschlüsse 142 geschlossen sind. Das Wärmeisolierelement 54 ist in der Aussparung 53 untergebracht, um nicht von dieser hervorzustehen. Die Struktur, in der das Wärmeisolierelement 54 nicht von der Aussparung 53 hervorsteht, ist bevorzugt für ein effizientes Schließen der Auslassanschlüsse 142 durch die Auslassventile 301.
• (1-4) Die ringförmige Nut 55 für ein Gestatten, dass die Auslassventile 301 leicht von der Ventilanschlussplatte 14 getrennt werden können, ist in der Aussparung 53 ausgebildet. Wenn nur die ringförmige Nut 55 in der Ventilanschlussplatte 14 ausgebildet ist, ohne die Aussparung 53, sollte sie ausgebildet werden durch Pressen zusammen mit den Ansauganschlüssen 141 und den Auslassanschlüssen 142 oder Löchern für ein Einsetzen der Schrauben 32. Jedoch ist es schwierig, die schmale ringförmige Nut 55 durch Pressen auszubilden, und dies bewirkt, dass das Leben eines Pressstempels verkürzt wird. Die Aussparung 53 hat keinen solchen schmalen Abschnitt wie die ringförmige Nut 55, so dass ein Pressen leicht ist und das Leben eines Pressstempels länger ist.
• (1-5) Das synthetische Harzwärmeisolierelement 46, das die Innenwandfläche (die Wandfläche 494, die Innenumfangswandfläche 292 und die Umfangswandfläche 341) bedeckt, die benachbart zu der Auslasskammer 28 in dem hinteren Gehäuse 13 ist, verringert eine Wärmeleitung von Kühlmittel in der Auslasskammer 28 und der Auslasspassage 34 zu dem hinteren Gehäuse 13. Die Verringerung der Wärmeleitung führt zu einer Unterdrückung der Wärmeleitung von dem hinteren Gehäuse 13 zu Kühlmittel in der Ansaugkammer 27 und der Ansaugpassage 33. Das Wärmeisolierelement 46 ist lose in die Auslasskammer 28 eingepasst, so dass es Spalten bzw. Zwischenräume zwischen der Trennwand 29 und dem Wärmeisolierelement 46 und zwischen der Endwand 49 und dem Wärmeisolierelement 46 gibt. Wenn Kühlgas durch diese Zwischenräume hindurchgeht, wird Wärme direkt von dem Kühlgas zu der Trennwand 29 und der Endwand 49 geleitet. Das Ende 463 des Kammerwärmeisolierabschnitts 461 ist gegen das Wärmeisolierelement 54 durch die Drängkraft der Blattfeder 47 gepresst. Somit strömt Kühlmittelgas nicht von dem Spalt bzw. Zwischenraum zwischen dem Ende 463 und dem Wärmeisolierelement 54 durch die Spalten bzw. Zwischenräume zwischen der Endwand 49 und dem Wärmeisolierelement 46 und zwischen der Trennwand 29 und dem Wärmeisolierelement 46. In anderen Worten gesagt, unterdrückt das Pressen des Endes 463 gegen das Wärmeisolierelement 54 durch die Blattfedern 47, dass Kühlmittelgas zwischen dem Wärmeisolierelement 46 und der Innenwandfläche (der Innenwandfläche 494, der Innenumfangswandfläche 292 und der Umfangswandfläche 341) des hinteren Gehäuses 13 strömt, das die Auslasskammer 28 und die Auslasspassage 34 in sich ausgebildet hat. Als eine Folge wird die Menge von Wärme verringert, die direkt von einem Kühlmittel, das von der Auslasskammer 28 ausgelassen wird, zu dem hinteren Gehäuse 13 geleitet wird, wodurch die Wärmeisolierleistung der Auslasskammer 28 und der Auslasspassage 34 in dem Kompressor 10 mit variabler Verdrängung verbessert wird. Dies trägt zur Verbesserung der Leistung des Kompressors 10 bei.
• (1-6) Das Wärmeisolierelement 46 ist lose in die Auslasskammer 28 eingepasst. Solch eine Struktur erfordert nicht dieselbe Form zwischen dem Kammerwärmeisolierabschnitt 461 und der Innenwandfläche (der Innenwandfläche 494 und der Innenumfangswandfläche 292) des hinteren Gehäuses 13, das die Auslasskammer 28 in sich ausgebildet hat. Die vorstehende Struktur erfordert auch nicht dieselbe Form zwischen dem Passagenwärmeisolierabschnitt 462 und der Innenwandfläche (der Umfangswandfläche 341) des hinteren Gehäuses 13, das die Auslasspassage 34 in sich ausgebildet hat. Dies gestattet eine große Zusammenbautoleranz zwischen dem hinteren Gehäuse 13 und dem Wärmeisolierelement 46, wodurch es leicht wird, die Auslasskammer 28 und das Wärmeisolierelement 46 auszubilden.
• (1-7) Das Wärmeisolierelement 56, das die Dichtung 17B bedeckt (d.h. die Wandfläche 43 der Ventilanschlussplatte 14 bedeckt, die zu der Ansaugkammer 27 benachbart ist) trägt zu einer Verbesserung der Wärmeisolierleistung der Ansaugkammer 27 bei. Das Wärmeisolierelement 56 bedeckt nur die Kammerwandfläche 43, die zu der Ansaugkammer 27 benachbart ist. Das Wärmeisolierelement 56 wird nicht direkt zwischen der Trennwand 29 des hinteren Gehäuses 13 und der Ventilanschlussplatte 14, und zwischen der Trennwand 29 des hinteren Gehäuses 13 und der Außenumfangswand 48 des hinteren Gehäuses 13 gehalten. Demzufolge tritt kaum eine Verschlechterung der Abdichtleistung aufgrund plastischer Verformung des Wärmeisolierelements 56 auf.
• (1-8) Das Wärmeisolierelement 44, das die Innenwandfläche (die Innenwandfläche 482, 491, die Außenumfangswandfläche 291 und die Umfangswandfläche 331) bedeckt, die benachbart zu der Ansaugkammer 27 in dem hinteren Gehäuse 13 ist, ist aus synthetischem Harz ausgebildet, das eine niedrige thermische Leitfähigkeit hat. Das Wärmeisolierelement 44 verringert eine Wärmeleitung von dem hinteren Aluminiumgehäuse 13, das eine hohe thermische Leitfähigkeit hat, zu Kühlmittelgas in der Ansaugkammer 27 und der Ansaugpassage 33. Das Wärmeisolierelement 44 ist lose in die Ansaugkammer 27 eingepasst, so dass es Spalten bzw. Zwischenräume zwischen der Außenumfangswand 28 und dem Wärmeisolierelement 44, zwischen der Endwand 49 und dem Wärmeisolierelement 44 und zwischen der Trennwand 29 und dem Wärmeisolier element 44 gibt. Wenn Kühlmittelgas in die Kompressionskammer 112 durch diese Spalten bzw. Zwischenräume gezogen wird, wird Kühlmittelgas, zu dem Wärme direkt von der Außenumfangswand 48, der Endwand 49 und der Trennwand 29 geleitet wird, in die Kompressionskammer 112 gezogen. Die Enden 443, 444 des Kammerwärmeisolierabschnitts 441 werden gegen das Wärmeisolierelement 56 durch die Drängkraft der Blattfedern 45 gepresst, Somit strömt Kühlmittelgas nicht durch die Spalten bzw. Zwischenräume zwischen der Außenumfangswand 48 und dem Wärmeisolierelement 44, zwischen der Endwand 49 und dem Wärmeisolierelement 44 und zwischen der Trennwand 29 und dem Wärmeisolierelement 44. In anderen Worten gesagt, unterdrückt ein Pressen der Enden 443, 444 gegen die Ventilanschlussplatte 14 durch die Blattfedern 45, ein Strömen von Kühlmittelgas zwischen der Innenwandfläche (der Innenwandfläche 482, 491, der Außenumfangswandfläche 291 und der Umfangswandfläche 331) des hinteren Gehäuses 13, das die Ansaugkammer 27 und die Ansaugpassage in sich ausgebildet hat, und dem Wärmeisolierelement 44. Als eine Folge wird die Menge von Wärme verringert, die direkt von dem hinteren Gehäuse 13 zu einem Kühlmittelgas geleitet wird, wodurch die Wärmeisolierleistung der Ansaugkammer 27 und der Ansaugpassage 33 des Kompressors 10 mit variabler Verdrängung verbessert wird. Dies trägt zu einer Verbesserung der Leistung des Kompressors 10 bei.
• (1-9) Das Wärmeisolierelement 44 ist lose in die Ansaugkammer 27 eingepasst. Solch eine Struktur erfordert nicht dieselbe Form zwischen dem Kammerwärmeisolierabschnitt 441 und der Innenwandfläche (der Innenwandflächen 482, 491 und der Außenumfangswandfläche 291) des hinteren Gehäuses 13, das die Ansaugkammer 27 in sich ausgebildet hat. Die vorstehende Struktur erfordert auch nicht dieselbe Form zwi schen dem Passagenwärmeisolierabschnitt 442 und der Innenwandfläche (der Umfangswandfläche 331) des hinteren Gehäuses 13, das die Ansaugpassage 33 in sich ausgebildet hat. Dies gestattet eine große Zusammenbautoleranz zwischen dem hinteren Gehäuse 13 und dem Wärmeisolierelement 44, wodurch es leicht gemacht wird, die Ansaugkammer 27 und das Wärmeisolierelement 44 auszubilden.
• (1-10) Die Blattfedern 45, 47, die eine große elastische Kraft mit einer kleinen elastischen Deformation haben, sind vorzuziehen als eine Drängeinrichtung für ein Drängen der Wärmeisolierelemente 44, 46 zu der Ventilanschlussplatte 14 hin.
• (1-11) Die Ansaugkammer 27 ist bei der Außenseite des hinteren Gehäuses 13 gelegen, und die Auslasskammer 28 ist durch die Ansaugkammer 27 um die Achse 181 der Drehwelle 18 herum umgeben. Die Struktur, in der die Ansaugkammer 27 bei der Außenseite (benachbart zu der Atmosphäre) des hinteren Gehäuses 13 gelegen ist, ist für ein Unterdrücken einer Temperaturerhöhung des Kühlmittelgases in der Ansaugkammer 27 vorzuziehen.
• (1-12) Da Kohlendioxid als Kühlmittel unter einem Druck verwendet wird, der höher ist als der von Fluorchlorkohlenwasserstoffgas, kann die Gasströmungsrate niedriger sein. Wenn die Gasströmungsrate niedriger wird, wird eine Unterdrückung eines Temperaturanstiegs des Kühlmittelgases in der Ansaugkammer 27 und der Ansaugpassage 23 wichtiger. Der Kompressor 10 mit einem variabler Verdrängung, der Kohlendioxid als Kühlmittel verwendet, ist für die Anwendung der vorliegenden Erfindung vorzuziehen.
• (1-13) Die synthetischen Harzwärmeisolierelemente 54, 56 haben einen unterschiedlichen thermischen Ausdehnungskoef fizienten als die Eisenventilanschlussplatte 14. Da jedoch die Wärmeisolierelemente 54, 56 nicht an der Ventilanschlussplatte 14 befestigt sind, wirkt keine Dehnbelastung auf die Wärmeisolierelemente 54, 56 aufgrund des Unterschieds des thermischen Ausdehnungskoeffizienten. Demzufolge ist die Haltbarkeit der Wärmeisolierelemente 54, 56 im Vergleich zum Stand der Technik verbessert.
• (1-14) Die synthetischen Harzwärmeisolierelemente 44, 46 haben einen unterschiedlichen thermischen Ausdehnungskoeffizienten als das hintere Aluminiumgehäuse 13. Da jedoch die Wärmeisolierelemente 44, 46 nicht an der Innenwandfläche des hinteren Gehäuses 13 befestigt sind, wirkt keine Dehnlast auf die Wärmeisolierelemente 44, 46 aufgrund des Unterschieds des thermischen Ausdehnungskoeffizienten, Demzufolge ist eine Haltbarkeit der Wärmeisolierelemente 44, 46 im Vergleich zum Stand der Technik verbessert.

According to the first preferred embodiment, the following advantages are obtained.

• (1-1) The heat insulating member 54 that the surface (the ground 531 ) of the valve connection plate 14 covered, leading to the outlet chamber 28 adjacent, improves the heat insulating performance in the outlet chamber 28 , The heat insulating element 54 covers only the wall surface (the floor 531 ) of the valve connection plate 14 which is adjacent to the outlet chamber 28 is. The heat insulating element 54 will not be between the dividing wall 29 the rear housing 13 and the valve connection plate 14 held. As a result, deterioration of the sealing performance hardly occurs due to plastic deformation of the heat insulating member 54 on.
• (1-2) A part of the heat insulating member 54 in the recess 53 is housed with the valve plate 30 covered the exhaust valves 301 Has. The valve plate 30 is with the valve connection plate 14 with the retaining element 31 connected by fastening the screws 50 , Consequently, through the valve plate 30 prevents the heat insulating element 54 from the recess 53 dissolves or removes. The structure in which the valve plate 30 (the exhaust valves 301 ) the heat insulating element 54 covered in the recess 53 is harbored, is preferred for a retention of the heat insulating element 54 at a predetermined position, ie in the recess 53 ,
• (1-3) When the plate-like heat insulating member 54 has a thickness that is greater than the depth of the soil 531 the recess 53 , stands the heat insulating element 54 from the recess 53 out. In this case, the surface of the heat insulating member is 54 that go into the outlet chamber 28 is free, higher than the valve seats 521 , In such a condition, there is a tight contact between the exhaust valves 301 and the valve seats 521 worsens, causing the sealing performance between the exhaust valves 301 and the valve seats 521 is deteriorated when the outlet ports 142 are closed. The heat insulating element 54 is in the recess 53 housed so as not to stand out from it. The structure in which the heat insulating element 54 not from the recess 53 protrudes is preferred for efficient closing of the outlet ports 142 through the exhaust valves 301 ,
• (1-4) The annular groove 55 for allowing that the exhaust valves 301 slightly from the valve port plate 14 can be separated is in the recess 53 educated. If only the annular groove 55 in the valve connection plate 14 is formed without the recess 53 It should be formed by pressing together with the suction ports 141 and the outlet ports 142 or holes for insertion of the screw 32 , However, it is difficult to use the narrow annular groove 55 by pressing, and this causes the life of a ram to be shortened. The recess 53 has no such narrow section as the annular groove 55 so that pressing is easy and the life of a ram is longer.
• (1-5) The synthetic resin heat insulating member 46 that the inner wall surface (the wall surface 494 , the inner peripheral wall surface 292 and the peripheral wall surface 341 ) adjacent to the outlet chamber 28 in the rear housing 13 is, reduces heat conduction of coolant in the outlet chamber 28 and the outlet passage 34 to the rear housing 13 , The reduction of the heat conduction suppresses the heat conduction from the rear housing 13 to coolant in the suction chamber 27 and the intake passage 33 , The heat insulating element 46 is loose in the outlet chamber 28 fitted so that there are gaps or spaces between the partition 29 and the heat insulating member 46 and between the end wall 49 and the heat insulating member 46 gives. When cooling gas passes through these gaps, heat is transferred directly from the cooling gas to the partition wall 29 and the end wall 49 directed. The end 463 the Kammerwärmeisolierabschnitts 461 is against the heat insulating element 54 by the urging force of the leaf spring 47 pressed. Thus, refrigerant gas does not flow from the gap between the end 463 and the heat insulating member 54 through the gaps between the end wall 49 and the heat insulating member 46 and between the partition 29 and the heat insulating member 46 , In other words, suppresses the pressing of the end 463 against the heat insulating element 54 through the leaf springs 47 in that coolant gas is between the heat insulating element 46 and the inner wall surface (the inner wall surface 494 , the inner peripheral wall surface 292 and the peripheral wall surface 341 ) of the rear housing 13 flows, which is the outlet chamber 28 and the outlet passage 34 has trained in itself. As a result, the amount of heat released directly from a coolant discharged from the outlet chamber is reduced 28 is omitted, to the rear housing 13 is passed, whereby the heat insulating performance of the outlet chamber 28 and the outlet passage 34 in the compressor 10 is improved with variable displacement. This helps to improve the performance of the compressor 10 at.
• (1-6) The heat insulating element 46 is loose in the outlet chamber 28 fitted. Such a structure does not require the same shape between the chamber heat insulating portion 461 and the inner wall surface (the inner wall surface 494 and the inner peripheral wall surface 292 ) of the rear housing 13 that the outlet chamber 28 has trained in itself. Also, the above structure does not require the same shape between the passage heat insulating portion 462 and the inner wall surface (the peripheral wall surface 341 ) of the rear housing 13 that the outlet passage 34 has trained in itself. This allows a large assembly tolerance between the rear housing 13 and the heat insulating member 46 , which makes it easy, the outlet chamber 28 and the heat insulating element 46 train.
• (1-7) The heat insulating element 56 that the seal 17B covered (ie the wall surface 43 the valve connection plate 14 covered, leading to the suction chamber 27 adjacent) contributes to an improvement in the heat insulating performance of the suction chamber 27 at. The heat insulating element 56 covers only the chamber wall surface 43 leading to the suction chamber 27 is adjacent. The heat insulating element 56 will not be directly between the partition 29 the rear housing 13 and the valve connection plate 14 , and between the partition 29 the rear housing 13 and the outer peripheral wall 48 the rear housing 13 held. As a result, deterioration of the sealing performance hardly occurs due to plastic deformation of the heat insulating member 56 on.
• (1-8) The heat insulating element 44 that the inner wall surface (the inner wall surface 482 . 491 , the outer peripheral wall surface 291 and the peripheral wall surface 331 ), which are adjacent to the suction chamber 27 in the rear housing 13 is made of synthetic resin, which has a low thermal conductivity. The heat insulating element 44 reduces heat conduction from the rear aluminum housing 13 , which has a high thermal conductivity, to refrigerant gas in the suction chamber 27 and the intake passage 33 , The heat insulating element 44 is loose in the suction chamber 27 fitted so that there are gaps or spaces between the outer peripheral wall 28 and the heat insulating member 44 , between the end wall 49 and the heat insulating member 44 and between the partition 29 and the heat insulating element 44 gives. When refrigerant gas enters the compression chamber 112 is pulled through these gaps, refrigerant gas is added to the heat directly from the outer peripheral wall 48 , the end wall 49 and the partition 29 is directed into the compression chamber 112 drawn. The ends 443 . 444 the Kammerwärmeisolierabschnitts 441 become against the heat insulating element 56 by the urging force of the leaf springs 45 Thus, refrigerant gas does not flow through the gaps between the outer peripheral wall 48 and the thermal insulation lement 44 , between the end wall 49 and the heat insulating member 44 and between the partition 29 and the heat insulating member 44 , In other words, pressing of the ends suppresses 443 . 444 against the valve connection plate 14 through the leaf springs 45 , a flow of refrigerant gas between the inner wall surface (the inner wall surface 482 . 491 , the outer peripheral wall surface 291 and the peripheral wall surface 331 ) of the rear housing 13 that the suction chamber 27 and the suction passage has formed therein, and the heat insulating member 44 , As a result, the amount of heat that is emitted directly from the rear housing is reduced 13 is passed to a refrigerant gas, whereby the heat insulating performance of the suction chamber 27 and the intake passage 33 of the compressor 10 is improved with variable displacement. This contributes to an improvement in the performance of the compressor 10 at.
• (1-9) The heat insulating element 44 is loose in the suction chamber 27 fitted. Such a structure does not require the same shape between the chamber heat insulating portion 441 and the inner wall surface (the inner wall surfaces 482 . 491 and the outer peripheral wall surface 291 ) of the rear housing 13 that the suction chamber 27 has trained in itself. Also, the above structure does not require the same shape between the passage heat insulating portion 442 and the inner wall surface (the peripheral wall surface 331 ) of the rear housing 13 that the intake passage 33 has trained in itself. This allows a large assembly tolerance between the rear housing 13 and the heat insulating member 44 , which makes it easy, the suction chamber 27 and the heat insulating element 44 train.
• (1-10) The leaf springs 45 . 47 that have a large elastic force with a small elastic deformation are preferable as a urging means for urging the heat insulating members 44 . 46 to the valve port plate 14 out.
• (1-11) The suction chamber 27 is at the outside of the rear case 13 located, and the outlet chamber 28 is through the suction chamber 27 around the axis 181 the rotary shaft 18 surrounded around. The structure in which the suction chamber 27 at the outside (adjacent to the atmosphere) of the rear housing 13 is for suppressing a temperature increase of the refrigerant gas in the suction chamber 27 preferable.
• (1-12) Since carbon dioxide is used as a refrigerant under a pressure higher than that of chlorofluorocarbon gas, the gas flow rate may be lower. As the gas flow rate becomes lower, suppression of a temperature rise of the refrigerant gas in the suction chamber becomes 27 and the intake passage 23 more important. The compressor 10 Variable displacement using carbon dioxide as the refrigerant is preferable for the application of the present invention.
• (1-13) The synthetic resin heat insulating members 54 . 56 have a different coefficient of thermal expansion than the iron valve connection plate 14 , However, since the heat insulating elements 54 . 56 not on the valve connection plate 14 are fixed, no strain on the heat insulating acts 54 . 56 due to the difference of the thermal expansion coefficient. As a result, the durability of the heat insulating members 54 . 56 improved compared to the prior art.
• (1-14) The synthetic resin heat insulating members 44 . 46 have a different thermal expansion coefficient than the rear aluminum housing 13 , However, since the heat insulating elements 44 . 46 not on the inner wall surface of the rear housing 13 are fixed, no strain on the heat insulating acts 44 . 46 Due to the difference of the coefficient of thermal expansion, accordingly, durability of the heat insulating members 44 . 46 improved compared to the prior art.

The present invention is not limited to the embodiment described above, but may be modified according to the following preferred embodiments, which are incorporated herein by reference 8th to 11 are shown. In the preferred embodiments shown in FIG 8th to 11 are shown, the same reference numerals denote the components which are substantially identical to those of the first preferred embodiment.

In the second preferred embodiment, which is in 8th is shown, a plurality of rubber sealing rings 57 between the heat insulating element 44 and the inner wall surface 49 the end wall 49 the rear housing 13 held. One of these seal rings is disposed around the passage heat insulating portion 442 to surround.

A sealing ring 58 is between the heat insulating element 46 and the inner wall surface 494 the end wall 49 held, The sealing ring 58 is disposed around the passage heat insulating portion 462 to surround. The ends 443 . 444 the Kammerwärmeisolierabschnitts 441 become against the heat insulating element 56 by the elastic deformation of the plurality of sealing rings 57 pressed. The end 463 the Kammerwärmeisolierabschnitts 461 becomes against the heat insulating element 54 by the elastic deformation of the sealing ring 58 pressed.

The sealing rings 57 are elastic members as urging means for pressing the heat insulating member 56 against the heat insulating element 44 , The sealing ring 58 is an elastic member as a urging member for pressing the heat insulating member 54 against the heat insulating element 46 ,

The sealing rings 57 close the inner wall surface (the inner wall surfaces 482 . 491 and the outer peripheral wall surface 291 ) of the rear housing 13 from the side leading to the intake passage 33 adjacent to the inner wall surface (the inner wall surfaces 482 . 491 and the outer peripheral wall surface 291 ) of the rear housing 13 connected to the heat insulating element 44 is covered, connects to the side leading to the valve port plate 14 is adjacent. The sealing rings 57 between the heat insulating element 44 and the inner wall surface 491 the end wall 49 are arranged to the Passagenwärmeisolierabschnitt 442 to surround define a closed space S1 (not shown) between the Kammerwärmeisolierabschnitt 441 and the inner wall surfaces 482 . 491 ,

The sealing ring 58 closes the inner wall surface (the inner wall surface 494 and the inner peripheral wall surface 292 ) of the rear housing 13 from the side adjacent to the exhaust passage 34 is that the inner wall surface (the inner wall surface 494 and the inner peripheral wall surface 292 ) of the rear housing 13 that with the heat insulating element 46 is covered, connects to the side leading to the valve port plate 14 is adjacent. The sealing ring 58 that is between the heat insulating element 46 and the inner wall surface 494 the end wall 49 is provided defines a closed space S2 (not shown) between the Kammerwärmeisolierabschnitt 461 and the inner peripheral wall surface 292 ,

According to the second preferred embodiment, additionally to the same advantages according to the paragraphs (1-1) to (1-9) and (1-11) to (1-14) of the first preferred embodiment, The following advantages are obtained.

The sealing rings 57 that the ends 443 . 444 the heat insulating element 44 against the heat insulating element 56 Press, lock a gas flow from the gap or gap between the Passagenwärmeisolierelement 242 and the peripheral wall surface 331 the intake passage 33 to the gap between the chamber heat insulating portion 441 and the inner wall surface 491 the end wall 49 from. Consequently, with the sealing rings 57 that the Passagenwärmeisolierabschnitt 242 surrounded, the heat insulating performance of the suction chamber 27 and the intake passage 33 further improved compared to the first preferred embodiment.

Furthermore, the sealing ring blocks 58 that's the end 463 the heat insulating element 46 against the heat insulating element 54 compresses a gas flow from the gap between the Kammerwärmeisolierabschnitt 461 and the inner peripheral wall surface 292 the partition 29 to the gap between the passage heat insulating portion 462 and the peripheral wall surface 341 the outlet passage 34 from. Consequently, with the sealing ring 58 containing the passage heat insulating section 462 surrounds the heat insulation performance in the outlet chamber 28 and the outlet passage 34 further improved compared to the first preferred embodiment.

In addition, the closed space S1 contributes to suppressing the heat conduction between the chamber heat insulating portion 441 (the heat insulating element 44 ) and the inner wall surfaces 482 . 491 and outer peripheral wall surface 291 at, whereby the heat insulating performance of the suction chamber 27 is improved. Similarly, the closed space S2 contributes to suppressing the heat conduction between the chamber heat insulating portion 461 (the heat insulating element 46 ) and the inner wall surface 494 and inner peripheral wall surface 292 at, whereby the heat insulating performance of the outlet chamber 28 is improved.

In the third preferred embodiment, which is in 9 is shown, the Wärmeisolierelement 44A molded with a mold surface forming the inner wall surface (the outer peripheral wall surface 291 and the inner wall surfaces 482 . 491 ) of the suction chamber 27 has, and the heat insulating element 46A is poured with a mold surface forming the inner wall surface (the inner peripheral wall surface 292 and the inner wall surface 494 ) of the outlet chamber 28 Has. A rubber sealing ring 59 will be between the end 443 the heat insulating element 44A and the heat insulating member 56 held, and a rubber sealing ring 60 will be between the end 444 the heat insulating element 44A and the heat insulating member 56 held. A rubber sealing ring 61 will be between the end 463 the heat insulating element 46A and the heat insulating member 56 held.

The sealing ring 59 deforms elastically to the gap between the end 443 the heat insulating element 44A and the heat insulating member 56 seal. The sealing ring 60 deforms elastically to the gap between the end 444 the heat insulating element 44A and the heat insulating member 56 seal. These gaskets 59 . 60 eliminate strict requirements for the positions the ends 443 . 444 the heat insulating element 44A and for the thickness of the heat insulating element 56 , which makes it easy, the heat insulating elements 56 . 44A train.

The sealing ring 61 deforms elastically to the gap between the end 463 the heat insulating element 46 and the heat insulating member 54 seal. This sealing ring 61 eliminates the strict requirements for the positions of the end 463 the heat insulating element 46A and for the thickness of the heat insulating element 54 , which makes it easy, the heat insulating elements 54 . 46A train.

In the fourth preferred embodiment, which is in 10 is shown, the Wärmeisolierelement 44B molded with a mold surface forming the inner wall surface (the outer peripheral wall surface 291 and the inner wall surfaces 482 . 491 ) of the suction chamber 27 has, and the heat insulating element 46B is poured with a mold surface forming the inner wall surface (the inner peripheral wall surface 292 and the inner wall surface 494 ) of the outlet chamber 28 Has. The thermal insulation elements 54B . 56B each have ring-shaped edges 544 . 561 . 561 , The ends 443 . 444 the heat insulating element 44B are each with the folded edges 561 . 562 connected. The end 463 the heat insulating element 46B is with the turned edge 544 connected.

The abutment areas between the ends 443 . 444 and the turned edges 561 . 562 are folded over and deformed, thereby sealing at the abutting areas between the ends 443 . 444 and the turned edges 561 respectively. 562 is ensured. The kick-off area between the end 463 and the turned edge 544 is folded over and deformed, whereby the seal at the abutting area between the end 463 and the turned edge 544 is ensured.

In the fifth preferred embodiment, which is in 11 is shown, is the heat insulating element 44C with the inner wall surface 491 connected, and the heat insulating element 46C is with the inner wall surface 494 connected. The thermal insulation elements 54C . 56C each have cylindrical sections 542 . 563 . 564 , The ends of the chamber heat insulating sections 441 . 461 the heat insulating elements 44C . 46C are tapered to each tapered sections 445 . 446 . 464 train. The end of the cylindrical section 542 is press fitted to the tapered section 464 to touch. The end of the cylindrical section 563 is press fitted to the tapered section 445 to touch. The end of the cylindrical section 564 is press fitted to the tapered section 446 to touch.

The rejuvenated section 543 of the cylindrical section 542 and the tapered section 464 the Kammerwärmeisolierabschnitts 461 are in close contact with each other by the elastic deformation of the cylindrical portion 542 and chamber heat insulating section 461 , whereby the seal at the abutment area hiss the tapered section 543 of the cylindrical section 542 and the tapered section 464 the Kammerwärmeisolierabschnitts 461 is ensured. The rejuvenated sections 565 . 566 the cylindrical sections 563 . 564 and the tapered sections 445 . 446 the Kammerwärmeisolierabschnitts 461 are in close contact with each other by the elastic deformation of the cylindrical portions 563 . 564 and the chamber heat insulating portion 441 , whereby the sealing at the abutting areas between the tapered sections 565 . 566 the cylindrical sections 563 . 564 and the rejuvenated sections 445 . 446 the Kammerwärmeisolierabschnitts 441 is ensured.

• (1) In der ersten und zweiten bevorzugten Ausführungsform kann das Wärmeisolierelement 54 mit einer Form ausgebildet sein, die eine Formoberfläche für ein Ausbilden des Bodens 531 der Aussparung 53 hat.
• (2) In der ersten bis dritten Ausführungsform kann das Wärmeisolierelement 56 zwischen der Ventilanschlussplatte 14 und der Dichtung 17B vorgesehen sein.
• (3) Ein Wärmeisolierelement kann zwischen der Ventilplatte 30 und dem Rückhalteelement 31 vorgesehen sein.
• (4) Eine Kautschuklage kann an den Enden 443, 444, 463 der Wärmeisolierelemente 44 bzw. 46 vorgesehen sein.
• (5) Ein Wärmeisolierelement kann nur in der Ansaugkammer vorgesehen sein.
• (6) Ein Wärmeisolierelement kann nur in der Auslasskammer vorgesehen sein.
• (7) Die Wärmeisolierelemente 54, 56, 44, 46 können aus Hartgummi oder Keramik ausgebildet sein.
• (8) Das Wärmeisolierelement 54 kann mit einem Klebemittel an die Ventilanschlussplatte 14 angeklebt sein. Das Wärmeisolierelement 56 kann mit einem Klebemittel an die Dichtung 17B angeklebt sein.
• (9) Die Enden 443, 444 des Wärmeisolierelements 44 können mit einem Klebemittel an das Wärmeisolierelement 56 geklebt sein.
• (10) Das Ende 463 des Wärmeisolierelements 46 kann mit einem Klebemittel an das Wärmeisolierelement 54 geklebt sein. In diesem Fall wird das Wärmeisolierelement 46 an das Wärmeisolierelement 54 geklebt, nachdem die Elemente, wie das Wärmeisolierelement 54 und die Ventilplatten 15, 30 mit der Ventilanschlussplatte 14 verbunden worden sind.
• (11) Die Enden 443, 444 des Wärmeisolierelements 44 können mit dem Wärmeisolierelement 56 durch Schmelzen der Enden 443, 444 mit Wärme verbunden werden.
• (12) Das Ende 463 des Wärmeisolierelements 46 kann mit dem Wärmeisolierelement 54 verbunden werden durch Schmelzen des Endes 463 mit Wärme. In diesem Fall wird das Wärmeisolierelement 46 mit dem Wärmeisolierelement 54 verbunden, nachdem die Elemente, wie das Wärmeisolierelement 54 und die Ventilplatten 15, 30 mit der Ventilanschlussplatte 14 verbunden worden sind.
• (13) Anstatt der Blattfedern 45, 47 können Druckfedern bzw. Spiralfedern verwendet werden.
• (14) In einer alternativen Ausführungsform zu der dritten bevorzugten Ausführungsform wird ein elastisches Element zwischen dem Wärmeisolierelement 56 und der Dichtung 17B gehalten, und das Wärmeisolierelement 56 wird gegen die Enden 443, 444 des Wärmeisolierelements 44A durch die Drängkraft des vorstehenden elastischen Elements gepresst.
• (15) In einer alternativen Ausführungsform zu der dritten bevorzugten Ausführungsform wird ein ringförmiges elastisches Element bei einer Position gehalten, die dem Ende 463 des Wärmeisolierelements 46 entspricht, zwischen dem Wärmeisolierelement 54 und der Ventilanschlussplatte 14, und das Wärmeisolierelement 54 wird gegen die Enden 463 des Wärmeisolierelements 46A durch die Drängkraft des vorstehenden elastischen Elements gepresst.
• (16) Die vorliegende Erfindung kann auf einen Kolbenkompressor angewendet werden, in dem eine Auslasskammer an der Außenseite des hinteren Gehäuses 13 vorgesehen ist und eine Ansaugkammer um die Achse 181 der Drehwelle 18 herum umgibt.
• (17) Die vorliegende Erfindung kann auf einen Kompressor angewendet werden, der anders ist als ein Kolbenkompressor.
• (18) Die vorliegende Erfindung kann auf einen Kompressor mit fester Verdrängung angewendet werden.
• (19) Die vorliegende Erfindung kann auf einen Kompressor angewendet werden, der ein anderes Kühlmittel als Kohlendioxid verwendet.

The present invention is not limited to the above embodiments, but may be modified according to the following alternative embodiments.

• (1) In the first and second preferred embodiments, the heat insulating member 54 be formed with a shape having a molding surface for forming the bottom 531 the recess 53 Has.
• (2) In the first to third embodiments, the heat insulating member 56 between the valve connection plate 14 and the seal 17B be provided.
• (3) A heat insulating member can be placed between the valve plate 30 and the retaining element 31 be provided.
• (4) A rubber suit may be at the ends 443 . 444 . 463 the heat insulating elements 44 respectively. 46 be provided.
• (5) A heat insulating member may be provided only in the suction chamber.
• (6) A heat insulating member may be provided only in the discharge chamber.
• (7) The heat insulating elements 54 . 56 . 44 . 46 can be made of hard rubber or ceramic.
• (8) The heat insulating member 54 can with an adhesive to the valve port plate 14 be glued on. The heat insulating element 56 Can with an adhesive to the seal 17B be glued on.
• (9) The ends 443 . 444 the heat insulating element 44 can with an adhesive to the heat insulating element 56 be glued.
• (10) The end 463 the heat insulating element 46 can with an adhesive to the heat insulator element 54 be glued. In this case, the heat insulating element becomes 46 to the heat insulating element 54 glued after the elements, such as the heat insulating element 54 and the valve plates 15 . 30 with the valve connection plate 14 have been connected.
• (11) The ends 443 . 444 the heat insulating element 44 can with the heat insulating element 56 by melting the ends 443 . 444 be connected with heat.
• (12) The end 463 the heat insulating element 46 can with the heat insulating element 54 be connected by melting the end 463 with heat. In this case, the heat insulating element becomes 46 with the heat insulating element 54 connected after the elements, such as the heat insulating element 54 and the valve plates 15 . 30 with the valve connection plate 14 have been connected.
• (13) Instead of the leaf springs 45 . 47 can be used compression springs or coil springs.
• (14) In an alternative embodiment to the third preferred embodiment, an elastic member is interposed between the heat insulating member 56 and the seal 17B held, and the heat insulating element 56 will be against the ends 443 . 444 the heat insulating element 44A pressed by the urging force of the protruding elastic member.
• (15) In an alternative embodiment to the third preferred embodiment, an annular elastic member is held at a position corresponding to the end 463 the heat insulating element 46 corresponds, between the heat insulating element 54 and the valve connection plate 14 , and the heat insulating element 54 will be against the ends 463 the heat insulating element 46A pressed by the urging force of the protruding elastic member.
• (16) The present invention can be applied to a reciprocating compressor in which an exhaust chamber is formed on the outside of the rear housing 13 is provided and a suction chamber about the axis 181 the rotary shaft 18 surrounds around.
• (17) The present invention can be applied to a compressor other than a reciprocating compressor.
• (18) The present invention can be applied to a fixed displacement compressor.
• (19) The present invention can be applied to a compressor using a refrigerant other than carbon dioxide.

Therefore For example, the above examples and embodiments are exemplary and not as limiting to look at, and the invention is not limited to the details above are given, limited, but may be modified within the scope of the appended claims.

A Heat insulation structure in a compressor has a cover housing, a separator and a Thermal insulating. The cover has a suction chamber and / or an outlet chamber formed in it. The separator separates a compression chamber from the suction chamber and / or the outlet chamber. The heat insulating element covers part of a wall surface the separating element which is adjacent to the cover housing. The heat insulating element covers only one chamber wall surface the separating element adjacent to the suction chamber and / or the Outlet chamber is.

Claims (18)

A heat insulating structure in a compressor having a cover housing having a suction chamber and / or an outlet chamber therein and a partition member separating a compression chamber from the suction chamber and / or the outlet chamber, characterized in that a part of a wall surface of the partition member , which is adjacent to the cover housing, is covered with a heat insulating member which covers only a chamber wall surface of the partition member which is adjacent to the suction chamber and / or the discharge chamber. Heat insulation structure according to claim 1, wherein the cover housing the outlet chamber has formed in itself, wherein the separating element an outlet port having the outlet chamber with the compression chamber connects, wherein the outlet port is opened or closed by a plate-like outlet valve which closes the chamber wall surface of the Touched separator or separates from it, which is adjacent to the outlet chamber, the chamber wall surface of the partition member which is adjacent to the discharge chamber, with the thermal insulating is covered, which is adjacent to the outlet chamber, wherein the heat insulating, which is adjacent to the outlet chamber, housed in a recess is that on the chamber wall surface is formed of the partition member adjacent to the discharge chamber is, and wherein at least a portion of the heat insulating element adjacent to the outlet chamber is covered with the outlet valve. Heat insulation structure according to claim 2, wherein the thickness of the heat insulating element, which is adjacent to the outlet chamber is set smaller as the depth of the recess. A heat insulating structure according to any one of claims 2 and 3, wherein the recess is formed to surround the outlet port, wherein the heat insulating member adjacent to the outlet chamber is accommodated in the recess is to leave an annular groove around the outlet port, wherein the outlet valve opens the outlet port and closes with the chamber wall surface as a valve seat, which is located around the outlet port and surrounded by the annular groove. Heat insulation structure according to one the claims 2 to 4, wherein an inner wall surface the cover housing, which has formed the outlet chamber in itself, with a second Thermal insulation element covered which is adjacent to the outlet chamber and which is different as the first insulating member adjacent to the outlet chamber is, wherein an end of the second heat insulating element, the the outlet chamber is adjacent, connected to the heat insulating element that is adjacent to the discharge chamber and the chamber wall surface, and wherein a gap between the heat insulating member adjacent to the outlet chamber, and the end of the second heat insulating element, which is adjacent to the outlet chamber is sealed. Heat insulation structure according to claim 5, wherein the second heat insulating element, which is adjacent to the outlet chamber, loose in the outlet chamber is fitted. Heat insulation structure according to claim 6, wherein the second heat insulating element, which is adjacent to the outlet chamber, by a squeezing device pushed towards the partition becomes. Heat insulation structure according to claim 7, wherein the urging device is an elastic member that is interposed between the second heat insulating member, the adjacent to the outlet chamber and an inner wall surface is that defines the outlet chamber. Heat insulation structure according to claim 1, wherein the cover housing the suction chamber has formed in itself, wherein the separating element a suction port, which has the suction chamber with the compression chamber connects, wherein the chamber wall surface of the separating element, the adjacent to the suction chamber is covered with the heat insulating element, which is adjacent to the suction chamber, and wherein the heat insulating member, the adjacent to the suction chamber, only the chamber wall surface of Covering member which is adjacent to the suction chamber covered. Heat insulation structure according to claim 9, wherein a seal between the cover housing and the separator held is, and wherein the heat insulating element, which is adjacent to the suction chamber, only one surface of the Covered gasket, which is adjacent to the suction chamber. Heat insulation structure according to one the claims 9 and 10, wherein an inner wall surface of covering housing, which has formed the suction chamber in itself, with a second thermal insulating is covered, which is adjacent to the suction chamber, and otherwise is as the heat insulating element, which is adjacent to the suction chamber, wherein one end of the second Heat insulating element, the adjacent to the suction chamber is connected to the heat insulating member which is adjacent to the suction chamber and covers the chamber wall surface, and wherein a gap between the heat insulating member facing the Adjacent to the suction chamber, and the end of the second heat insulating element, which is adjacent to the suction chamber is sealed. Heat insulation structure according to claim 11, wherein the second heat insulating element, which is adjacent to the suction chamber, loose in the suction chamber is fitted. Heat insulation structure according to claim 12, wherein the second heat insulating element, which is adjacent to the suction chamber, by a urging means pushed to the separating element becomes. Heat insulation structure according to claim 13, wherein the urging device is an elastic element that is between the second heat insulating element, which is adjacent to the suction chamber, and an inner wall surface arranged is that defines the suction chamber. Heat insulation structure according to one the claims 1 to 14, wherein the compressor is a reciprocating compressor in which a piston is housed in a cylinder bore which is in the Cylinder is formed around the compression chamber in the cylinder bore form, wherein the piston in the cylinder bore with the rotation the rotary shaft is reciprocated, and wherein the suction chamber and the outlet chamber are formed in the cover housing, which with connected to the cylinder. Heat insulation structure according to claim 15, wherein the suction chamber located at the outside of the Abdeckgehäuses is and surrounds the outlet chamber around an axis of the rotary shaft around. Heat insulation structure according to one the claims 1 to 16, where the compressor is carbon dioxide as a coolant used. Heat insulation structure according to one the claims 1 to 17, wherein the separating element is a valve connection plate, which has a suction port and / or an outlet port.