COMPRESSOR AND REFRIGERATION CYCLE DEVICE USING SAME

• US 20170146265A1
• Filed: 04/27/2015
• Published: 05/25/2017
• Est. Priority Date: 05/12/2014
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: TAKAICHI, Kenji, SAKUDA, Atsushi, NAKAI, Hiroaki, FUJITAKA, Akira, SAKIMA, Fuminori, KAWABE, Yoshikazu, SATO, Shigehiro
• Granted Patent: US 10,077,922 B2
• Time in Patent Office: Days
• CPC Class Codes: C09K 2205/122 Halogenated hydrocarbons
• CPC Class Codes: C09K 2205/126 Unsaturated fluorinated hydrocarbons
• CPC Class Codes: C09K 2205/22 All components of a mixture being fluoro compounds
• CPC Class Codes: C09K 2205/32 The mixture being azeotropic
• CPC Class Codes: C09K 5/04 the change of state being from liquid to vapour or vice versa
• CPC Class Codes: C09K 5/045 containing only fluorine as halogen
• CPC Class Codes: C10M 107/24 containing monomers having an unsaturated radical bound to an alcohol, aldehyde, ketonic, ether, ketal or acetal radical
• CPC Class Codes: C10M 129/10 having hydroxy groups bound to a carbon atom of a six-membered aromatic ring
• CPC Class Codes: C10M 137/04 Phosphate esters
• CPC Class Codes: C10M 2203/0206 used as base material
• CPC Class Codes: C10M 2203/024 unsaturated
• CPC Class Codes: C10M 2207/023 having hydroxy groups bound to carbon atoms of six-membered aromatic rings
• CPC Class Codes: C10M 2207/026 with tertiary alkyl groups
• CPC Class Codes: C10M 2207/0406 used as base material
• CPC Class Codes: C10M 2209/04 containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
• CPC Class Codes: C10M 2223/04 Phosphate esters
• CPC Class Codes: C10N 2020/101 Containing Hydrofluorocarbons
• CPC Class Codes: C10N 2030/10 Inhibition of oxidation, e.g. anti-oxidants
• CPC Class Codes: C10N 2040/30 Refrigerators lubricants or compressors lubricants
• CPC Class Codes: F04B 39/00 Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
• CPC Class Codes: F04C 18/0215 : where only one member is moving
• CPC Class Codes: F04C 18/0253 : Details concerning the base
• CPC Class Codes: F04C 18/0269 : Details concerning the involute wraps
• CPC Class Codes: F04C 18/0292 : Ports or channels located in the wrap
• CPC Class Codes: F04C 2210/26 : Refrigerants with particular properties, e.g. HFC-134a
• CPC Class Codes: F04C 2240/30 : Casings or housings
• CPC Class Codes: F04C 2240/803 : Electric connectors or cables; Fittings therefor
• CPC Class Codes: F04C 23/008 : Hermetic pumps
• CPC Class Codes: F04C 27/005 : Axial sealings for working fluid
• CPC Class Codes: F04C 28/26 : using bypass channels
• CPC Class Codes: F04C 29/0085 : Prime movers
• CPC Class Codes: F04C 29/02 : Lubrication of machines or engines in general F01M; Lubricant separation separation in general B01D
• CPC Class Codes: F04C 29/12 : Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• CPC Class Codes: F25B 1/04 : with compressor of rotary type F25B1/005, F25B1/10 take precedence
• CPC Class Codes: F25B 2600/01 : Timing
• CPC Class Codes: F25B 2600/0262 : internal to the compressor
• CPC Class Codes: F25B 31/002 : Lubrication
• CPC Class Codes: H05K 999/99 : dummy group

Abstract

A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyvinyl ether oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.

Claims

1. A compressor which uses a refrigerant containing 1,1,2-trifluoroethylene as a working fluid, and uses a polyvinyl ether oil as a compressor lubricating oil, comprising:

a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate;

a compression chamber which is formed by meshing the fixed scroll and the revolving scroll;

a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber;

a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole; and

a check valve which is provided in the bypass hole, and allows a flow from a compression chamber side to a discharge chamber side.

2. The compressor of claim 1,

wherein the check valve is a reed valve provided on an end plate surface of the fixed scroll.

3. The compressor of claim 1,

wherein the discharge chamber always communicates with the compression chamber via the discharge hole.

6. The compressor of claim 1,

wherein the working fluid is any one of configurations of a mixed working fluid containing difluoromethane in which there is at least 30% by weight to at most 60% by weight of difluoromethane, a mixed working fluid containing tetrafluoroethane in which there is at least 30% by weight to at most 60% by weight of tetrafluoroethane, and a mixed working fluid containing difluoromethane and tetrafluoroethane in which the difluoromethane and the tetrafluoroethane are mixed with each other, and in which proportions at which the difluoromethane and the tetrafluoroethane are incorporated with each other is at least 30% by weight to at most 60% by weight.

7. The compressor of claim 1,

wherein the polyvinyl ether oil contains a phosphate ester anti-wear agent.

8. The compressor of claim 1,

wherein the polyvinyl ether oil contains a phenolic antioxidant.

9. The compressor of claim 1,

wherein the polyvinyl ether oil is a lubricating oil which is obtained by mixing a lubricating oil having a higher viscosity than a viscosity of a base oil with a terpene type or a terpenoid type of which an amount is equal to or greater than 1% and less than 50%, or is obtained by mixing a lubricating oil having a super-high viscosity of which an amount is equal to or greater than an amount of a terpene type or a terpenoid type in advance therewith, and by mixing an oil additive of which the viscosity is adjusted to be equivalent to the viscosity of the base oil with the base oil.

10. The compressor of claim 1, further comprising:

a motor portion which drives the revolving scroll,

wherein the motor portion uses an electrical wire which is obtained by coating a conductor with a thermosetting insulating material and baking with an insulating layer therebetween, as a coil.

11. The compressor of claim 1, further comprising:

an airtight container which accommodates the compression chamber and the motor portion,

wherein the airtight container includes a power supply terminal which is installed in a mouth portion via an insulating member, a connection terminal for connecting the power supply terminal to a lead wire, and a doughnut-like insulating member which is disposed to adhere to the insulating member on the power supply terminal on an inner side of the airtight container.

12. A refrigeration cycle device comprising:

the compressor of claim 1;

a condenser which cools a refrigerant gas that is compressed by the compressor and has a high pressure;

a throttle mechanism which reduces a pressure of a high-pressure refrigerant which is liquefied by the condenser;

an evaporator which gasifies the refrigerant of which the pressure is reduced by the throttle mechanism; and

piping which links the compressor, the condenser, the throttle mechanism, and the evaporator to each other.

13. The compressor of claim 2,

wherein the discharge chamber always communicates with the compression chamber via the discharge hole.

4. A compressor which uses a refrigerant containing 1,1,2-trifluoroethylene as a working fluid, and uses a polyvinyl ether oil as a compressor lubricating oil, comprising:

a fixed scroll and a revolving scroll each having a spiral lap rises from an end plate;

a compression chamber which is formed by engaging the fixed scroll and the revolving scroll;

a first compression chamber which is formed on an outer wall side of the lap of the revolving scroll; and

a second compression chamber which is formed on an inner wall side of the lap of the revolving scroll,

wherein a suction volume of the first compression chamber is greater than a suction volume of the second compression chamber.

5. The compressor of claim 4,

wherein a discharge chamber is provided in the end plate of the fixed scroll, and the discharge chamber always communicates with the compression chamber via a discharge hole.

14. The compressor of claim 4,

wherein the working fluid is any one of configurations of a mixed working fluid containing difluoromethane in which there is at least 30% by weight to at most 60% by weight of difluoromethane, a mixed working fluid containing tetrafluoroethane in which there is at least 30% by weight to at most 60% by weight of tetrafluoroethane, and a mixed working fluid containing difluoromethane and tetrafluoroethane in which the difluoromethane and the tetrafluoroethane are mixed with each other, and in which proportions at which the difluoromethane and the tetrafluoroethane are incorporated with each other is at least 30% by weight to at most 60% by weight.

15. The compressor of claim 4,

wherein the polyvinyl ether oil contains a phosphate ester anti-wear agent.

16. The compressor of claim 4,

wherein the polyvinyl ether oil contains a phenolic antioxidant.

17. The compressor of claim 4,

wherein the polyvinyl ether oil is a lubricating oil which is obtained by mixing a lubricating oil having a higher viscosity than a viscosity of a base oil with a terpene type or a terpenoid type of which an amount is equal to or greater than 1% and less than 50%, or is obtained by mixing a lubricating oil having a super-high viscosity of which an amount is equal to or greater than an amount of a terpene type or a terpenoid type in advance therewith, and by mixing an oil additive of which the viscosity is adjusted to be equivalent to the viscosity of the base oil with the base oil.

18. The compressor of claim 4, further comprising:

a motor portion which drives the revolving scroll,

wherein the motor portion uses an electrical wire which is obtained by coating a conductor with a thermosetting insulating material and baking with an insulating layer therebetween, as a coil.

19. The compressor of claim 4, further comprising:

an airtight container which accommodates the compression chamber and the motor portion,

wherein the airtight container includes a power supply terminal which is installed in a mouth portion via an insulating member, a connection terminal for connecting the power supply terminal to a lead wire, and a doughnut-like insulating member which is disposed to adhere to the insulating member on the power supply terminal on an inner side of the airtight container.

20. A refrigeration cycle device comprising:

the compressor of claim 4;

a condenser which cools a refrigerant gas that is compressed by the compressor and has a high pressure;

a throttle mechanism which reduces a pressure of a high-pressure refrigerant which is liquefied by the condenser;

an evaporator which gasifies the refrigerant of which the pressure is reduced by the throttle mechanism; and

piping which links the compressor, the condenser, the throttle mechanism, and the evaporator to each other.