Compressor having casing and temperature detector thereon

Patent metadata

Field	Value
Publication number	US-11506206-B2
Application number	US-201816771565-A
Country	US
Kind code	B2
Filing date	Oct 29, 2018
Priority date	Dec 22, 2017
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

A compressor includes a compression mechanism, a casing, and a temperature detector. The compression mechanism includes a rotation axis. The casing accommodates the compression mechanism. The casing includes a compression mechanism contact portion. The compression mechanism is in contact with an inner surface of the compression mechanism contact portion. The temperature detector is attached to an outer surface of the compression mechanism contact portion and is configured to sense temperature of the compression mechanism contact portion.

First claim

What is claimed is:

1. A compressor comprising:
a compression mechanism having a rotation axis;
a casing accommodating the compression mechanism; and
a temperature detector,
the casing including a compression mechanism contact portion,
the compression mechanism being in contact with an inner surface of the casing at the compression mechanism contact portion, the compression mechanism having a discharge opening that is disposed closer to the rotation axis than to the inner surface of the casing, and
the temperature detector being attached to an outer surface of the compression mechanism contact portion, and the temperature detector being configured to sense temperature of the compression mechanism contact portion.

2. The compressor according to claim 1 , wherein
the compression mechanism includes a compression mechanism extension section,
the compression mechanism extension section radially extends from a center to a peripheral edge of the compression mechanism,
the casing includes a compression mechanism extension section contact portion,
the compression mechanism extension section contact portion of the casing is in contact with the compression mechanism extension section, and
the temperature detector is attached to the casing so as to cover the compression mechanism extension section contact portion in a side view.

3. The compressor according to claim 2 , wherein
the compression mechanism includes
a cylinder,
a piston configured to revolve around the rotation axis, and
a head defining, along with the cylinder and the piston, a compression chamber,

the compression mechanism extension section contact portion of the casing is in contact with a contact member of the compression mechanism, and
the contact member is the cylinder or the head.

4. The compressor according to claim 3 , wherein
the contact member includes a continuous portion radially occupying from an outer edge of the compression chamber to the compression mechanism contact portion, and
the continuous portion has no opening.

5. The compressor according to claim 1 , wherein
the compression mechanism has a suction hole,
a first imaginary half line starts from the rotation axis and passes a center of the suction hole in a planar view,
a second imaginary half line starts from the rotation axis and passes the temperature detector in the planar view, and
the first imaginary half line and the second imaginary half line form an angle not less than 30 degrees and not more than 330 degrees.

6. The compressor according to claim 1 , wherein
the temperature detector is a thermistor.

7. The compressor according to claim 1 , wherein
the temperature detector is a thermostat.

8. The compressor according to claim 1 , wherein
the discharge opening is oriented to discharge the refrigerant in a direction parallel to the rotation axis.

9. The compressor according to claim 1 , wherein
the compression mechanism includes a front muffler disposed on a discharge side of the compression mechanism, and
the discharge opening is a front muffler discharge hole provided in the front muffler.

10. A compressor comprising:
a compression mechanism having a rotation axis;
a casing accommodating the compression mechanism; and
a temperature detector,
the casing including a compression mechanism contact portion,
the compression mechanism being in contact with an inner surface of the casing at the compression mechanism contact portion, the compression mechanism having a discharge opening that is disposed closer to the rotation axis than to the inner surface of the casing, the temperature detector being attached to an outer surface of the compression mechanism contact portion, and the temperature detector being configured to sense temperature of the compression mechanism contact portion, and
in a side view,
at least 50% of a length of the compression mechanism contact portion along the rotation axis being overlapped with the temperature detector in a side view, or
at least 50% of a length of the temperature detector along the rotation axis being overlapped with the compression mechanism contact portion.

11. The compressor according to claim 10 , wherein
in a side view,
at least 70% of the length of the compression mechanism contact portion along the rotation axis is overlapped with the temperature detector, or
at least 70% of the length of the temperature detector along the rotation axis is overlapped with the compression mechanism contact portion.

12. The compressor according to claim 11 , wherein
in a side view,
at least 90% of the length of the compression mechanism contact portion along the rotation axis is overlapped with the temperature detector, or
at least 90% of the length of the temperature detector along the rotation axis is overlapped with the compression mechanism contact portion.

13. The compressor according to claim 10 , wherein
the compression mechanism includes a compression mechanism extension section,
the compression mechanism extension section radially extends from a center to a peripheral edge of the compression mechanism,
the casing includes a compression mechanism extension section contact portion,
the compression mechanism extension section contact portion of the casing is in contact with the compression mechanism extension section, and
the temperature detector is attached to the casing so as to cover the compression mechanism extension section contact portion in a side view.

14. The compressor according to claim 13 , wherein
the compression mechanism includes
a cylinder,
a piston configured to revolve around the rotation axis, and
a head defining, along with the cylinder and the piston, a compression chamber,

the compression mechanism extension section contact portion of the casing is in contact with a contact member of the compression mechanism, and
the contact member is the cylinder or the head.

15. The compressor according to claim 14 , wherein
the contact member includes a continuous portion radially occupying from an outer edge of the compression chamber to the compression mechanism contact portion, and
the continuous portion has no opening.

16. The compressor according to claim 10 , wherein
the compression mechanism has a suction hole,
a first imaginary half line starts from the rotation axis and passes a centerof the suction hole in a planar view,
a second imaginary half line starts from the rotation axis and passes the temperature detector in the planar view, and
the first imaginary half line and the second imaginary half line form an angle not less than 30 degrees and not more than 330 degrees.

17. The compressor according to claim 10 , wherein
the temperature detector is a thermistor.

18. The compressor according to claim 10 , wherein
the temperature detector is a thermostat.

19. The compressor according to claim 10 , wherein
the discharge opening is oriented to discharge the refrigerant in a direction parallel to the rotation axis.

20. The compressor according to claim 10 , wherein
the compression mechanism includes a front muffler disposed on a discharge side of the compression mechanism, and
the discharge opening is a front muffler discharge hole provided in the front muffler.

Assignees

• Daikin Ind Ltd

Inventors

• Honda Keita
• Adachi Makoto
• Fujii Yuusuke

Classifications

• F04C2240/30

  Casings or housings · CPC title

• F04C28/28 Primary

  Safety arrangements; Monitoring · CPC title

• F04C18/322 Primary

  with vanes hinged to the outer member and reciprocating with respect to the outer member · CPC title

• F04C29/065

  Noise dampening volumes, e.g. muffler chambers · CPC title

• F04C23/008

  Hermetic pumps · CPC title