Compressor and freezer

Patent metadata

Field	Value
Publication number	US-12553440-B2
Application number	US-202418612644-A
Country	US
Kind code	B2
Filing date	Mar 21, 2024
Priority date	Sep 30, 2021
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A compressor includes fixed and movable members with a discharge port penetrating the fixed member and a discharge valve body to open and close the discharge port. An inflow end of the discharge port has a hydraulic diameter Di=4×(Ai/Li), where Ai is an area of the inflow end and Li is a circumferential length at the inflow end. An outlet flow path is formed between an outflow end of the discharge port and the valve body. The outlet flow path has a cross-sectional area Ao=Lo×ho, and a hydraulic diameter Do=4×{Ao/(Lo+Lv)}, where Lo is a circumferential length at the outflow end, ho is a reference lift amount of the valve body, and Lv is a circumferential length of a valve head of the valve body in contact with the outflow end. A ratio Do/Di at the inflow end is 0.602 to 0.740.

First claim

The invention claimed is:

1 . A compressor comprising:
a fixed member that forms a compression chamber; and a movable member driven to rotate and change a volume of the compression chamber, the compressor being configured to suck a fluid into the compression chamber and compress the fluid, the fixed member including
a discharge port penetrating the fixed member to lead the fluid out of the compression chamber, and
a discharge valve configured to open and close the discharge port,
the discharge valve including a valve body configured to
close the discharge port by covering an outflow end of the discharge port, and
open the discharge port by floating from the outflow end of the discharge port,
an inflow end of the discharge port having a hydraulic diameter Di expressed by Di=4×(Ai/Li), where Ai is an area of the inflow end and Li is a circumferential length at the inflow end, an outlet flow path being formed between the outflow end of the discharge port and the valve body, the outlet flow path having
a cross-sectional area Ao expressed by Ao=Lo×ho, and
a hydraulic diameter Do expressed by Do=4×{Ao/(Lo+Lv)},
where Lo is a circumferential length at the outflow end of the discharge port, ho is a reference lift amount of the valve body, and Lv is a circumferential length of a valve head,
the valve head being a portion of the valve body in contact with the outflow end of the discharge port,
a ratio Do/Di of the hydraulic diameter Do of the outlet flow path to the hydraulic diameter Di at the inflow end of the discharge port being 0.602 to 0.740.

2 . The compressor of claim 1 , wherein
the valve head has a diameter dv, and a ratio dv/ho of the diameter dv of the valve head to the reference lift amount ho of the valve body is 3.5 to 5.2.

3 . The compressor of claim 1 , wherein
a maximum number of revolutions of the compressor is 118 rps or more.

4 . The compressor of claim 2 , wherein
a maximum number of revolutions of the compressor is 118 rps or more.

5 . A refrigeration apparatus including the compressor of claim 1 .

6 . A refrigeration apparatus including the compressor of claim 2 .

7 . A refrigeration apparatus including the compressor of claim 3 .

8 . A refrigeration apparatus including the compressor of claim 4 .

Assignees

• Daikin Ind Ltd

Inventors

• Ueno Hiromichi
• Katayama Tatsuya
• Miyazawa Kanetaka
• Adachi Masaaki
• Yamamoto Yuta

Classifications

• F25B31/026

  with compressor of rotary type · CPC title

• F04C18/3562

  the inner and outer member being in contact along one line or continuous surfaces substantially parallel to the axis of rotation · CPC title

• F04C18/348

  the vanes positively engaging, with circumferential play, an outer rotatable member · CPC title

• F04C18/30

  having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members · CPC title

• F04B39/1073

  the members being reed valves · CPC title