Compressor

Patent metadata

Field	Value
Publication number	US-9644625-B2
Application number	US-201113885743-A
Country	US
Kind code	B2
Filing date	Nov 28, 2011
Priority date	Dec 8, 2010
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A compressor has suction reed valves each of which includes a fixation portion fixed to the valve base plate, a basal portion that extends from the fixation portion and is separable from the plate, and a valve flap extending from the basal portion toward the distal end to selectively open and close the suction port. Each suction port has a shape elongated in the width direction, which is orthogonal to the longitudinal direction. The width of the basal portion is greater than that of the suction port. Each valve flap includes an opening-closing portion facing the corresponding suction port and stoppers, which project from the ends in the width direction. The side edges in the width direction are continuous from the stoppers to the basal portion to gradually approach the suction port. The cylinder block has pairs of recessed retainers. The stoppers contact the retainers.

First claim

The invention claimed is:

1. A compressor, comprising:
a housing;
a compression chamber defined in the housing, wherein refrigerant is compressed in the compression chamber;
a suction chamber defined in the housing, wherein the refrigerant is drawn into the compression chamber through the suction chamber;
a valve base plate located between the compression chamber and the suction chamber;
a suction valve plate provided over the valve base plate;
a plurality of suction ports formed in the valve base plate to extend through the valve base plate, wherein the plurality of suction ports is capable of connecting the compression chamber and the suction chamber with each other; and
a plurality of suction reed valves for selectively opening and closing the plurality of suction ports, the plurality of suction reed valves being defined by apertures penetrating the suction valve plate to form spaces in the suction valve plate and define outer profiles of the plurality of suction reed valves, wherein
each of the plurality of suction reed valves has an elongated shape with a distal end and is elastically deformable,
each of the suction reed valves including: a fixation portion fixed to the valve base plate, a basal portion that extends from the fixation portion in the longitudinal direction of the suction reed valve and is separable from the valve base plate, and a valve flap that extends from the basal portion toward the distal end in the longitudinal direction of the suction reed valve to selectively open and close the suction port,
the valve base plate has a fixation surface that faces the compression chamber, wherein the fixation portion is fixed to the fixation surface,
a corresponding one of the suction ports having a shape elongated in a width direction, which is orthogonal to the longitudinal direction of a corresponding one of the suction reed valves,
the width of a corresponding one of the basal portions is set to be greater than the measurement of the corresponding one of the suction ports in the width direction,
the valve flap includes
an opening-closing portion that faces the suction port,
a pair of stoppers projecting from the opening-closing portion at both ends in the width direction of the corresponding one of the suction ports, wherein the stoppers protrude in opposite directions from each other, and an outermost side of each of the pair of stoppers is arcuate, and
a pair of side edges, which encompasses the outermost side of each of the pair of stoppers, the pair of side edges extending continuously from the outermost side of the pair of stoppers to the corresponding one of the basal portions, wherein the pair of side edges approach each other in a direction from the distal end of the corresponding one of the suction reed valves toward the corresponding one of the basal portions so as to define a minimum width of the corresponding one of the basal portions, wherein the outermost side of each of the pair of stoppers entirely diverge from each other in a direction towards a free end of the valve flap to define a maximum width of the valve flap,
the spaces being provided so as to extend along each of the pair of side edges,
the housing has a pair of retainers, wherein each stopper contacts one of the retainers, and
wherein refrigerant in the suction chamber is configured to be drawn into the compression chamber through the spaces.

2. The compressor according to claim 1 , wherein the stoppers are each formed to make surface contact with the corresponding retainer.

3. The compressor according to claim 1 , wherein the depths of the retainers are different from each other.

4. The compressor according to claim 1 , wherein each of the pair of side edges comprises a continuous curve that extends from a minimum width of the corresponding one of the basal portions to a maximum width of the valve flap.

5. The compressor according to claim 1 , wherein a distance between the distal end of the suction reed valve and an outer periphery of the suction port is less than a distance between the outermost side of each of the pair of stoppers and the outer periphery of the suction port.

6. The compressor according to claim 1 , wherein the valve base plate includes:
a loop-shaped recessed groove that is formed in the fixation surface and encompasses the corresponding one of the suction ports; and
a sealing surface formed inside the region encompassed by the recessed groove, wherein the sealing surface is flush with the fixation surface and is contactable in a loop area with the opening-closing portion in a region about the suction port.

7. The compressor according to claim 6 , wherein the side edges are separated from the bottom surface of the recessed groove.

8. The compressor according to claim 6 , wherein the stoppers are separated from the bottom surface of the recessed groove.

9. The compressor according to claim 1 , wherein the valve base plate has a support surface that is flush with the fixation surface and contactable with a central region of the opening-closing portion.

10. The compressor according to claim 9 , wherein
the valve base plate has an extension portion that extends in a manner dividing the suction port in two in the width direction, and
the support surface is formed on the extension portion.

11. The compressor according to claim 10 , wherein the extension portion extends in the longitudinal direction of the corresponding one of the suction reed valves only from a side of the corresponding one of the suction ports that is nearest the corresponding one of the basal portions toward a side of the corresponding one of the suction ports that is nearest the distal end of the corresponding one of the suction reed valves.

12. The compressor according to claim 10 , wherein a communicating groove is recessed in a surface of the extension portion that faces the valve flap, and the communicating groove communicates with the corresponding one of the suction ports when the corresponding one of the suction ports is closed.

13. The compressor according to claim 12 , wherein the corresponding one of the suction ports is formed by punching, and the recessed groove and the communicating groove are formed by crushing.

14. The compressor according to claim 10 , wherein a recess is recessed in a surface of the extension portion that faces the valve flap, and the recess is disconnected from the corresponding one of the suction ports when the corresponding one of the suction ports is closed.

15. The compressor according to claim 14 , wherein the corresponding one of the suction ports is formed by punching, and the recessed groove and the recess are formed by crushing.

Assignees

• Obayashi Masakazu
• Kurita Hajime
• Suzuki Yasushi
• Kimoto Yoshio
• Ota Masaki
• Hoshino Nobuaki
• Yamazaki Yusuke
• Toyota Jidoshokki Kk

Inventors

• Obayashi Masakazu
• Kurita Hajime
• Suzuki Yasushi
• Kimoto Yoshio
• Ota Masaki
• Hoshino Nobuaki
• Yamazaki Yusuke

Classifications

• F04B39/1073 Primary

  the members being reed valves · CPC title

• F04B53/10 Primary

  Valves; Arrangement of valves · CPC title

• F04B53/1085

  having means for limiting the opening height (F04B53/101 and F04B53/1035 take precedence) · CPC title

• F04B27/1036

  Component parts, details, e.g. sealings, lubrication · CPC title

• F04B53/1037

  Flap valves · CPC title