Daikin Industries

The disclosure provides a method for producing a polytetrafluoroethylene molded article, capable of improving the tensile strength of the resulting polytetrafluoroethylene molded article, regardless of whether the polytetrafluoroethylene used is a recycled product or a virgin product, without using a special infrared irradiation device and a rubber mold, and a polytetrafluoroethylene molded article. Provided is a method for producing a polytetrafluoroethylene molded article, including a rolling step of rolling polytetrafluoroethylene at 50 MPa or higher to obtain a molded article.

An electric component module 10 includes a first board 21 having a first circuit 31 including a noise generation source, a second board 22 having a second circuit 32 including a microcomputer 35 that transmits and receives a communication signal CS to and from a control circuit 41 other than the first circuit 31, the second board 22 being separated from the first board 21, and an electric wire 51 that transmits and receives a simple signal SS between the first circuit 31 and the second circuit 32.

A first cylinder (31) is provided with a first valve housing portion (31j) recessed from the inner peripheral surface toward the outer side and housing a first reed valve (63) and a valve retainer (64). The valve retainer (64) has a first surface (64b) facing the first reed valve (63) and a second surface (64c) opposite to the first surface (64b). A center line (C1) extending in the longitudinal direction of the first reed valve (63) crosses an opening of the first valve housing portion (31j) that is close to the first cylinder chamber (S1). A first edge (31k) that is located on the opening of the first valve housing portion (31j) which is close to the first cylinder chamber (S1) and that is close to the valve attachment surface (31g) is located closer to the second surface (64c) of the valve retainer (64) than the valve attachment surface (31g) in a first direction orthogonal to the valve attachment surface (31g).

A rotary compressor includes: a casing (16) that forms a first space (Si) in which a refrigerant at a suction pressure flows; an electric motor (10) disposed in the first space (Si); a drive shaft (70) that is rotated about its axis; and a compression mechanism (15) that compresses the refrigerant in the first space (Si) and discharges the compressed refrigerant from a discharge port (24, 29). The casing (16) forms the oil reservoir (85) that stores the refrigerating machine oil and the high-pressure gas space (HS) into which the refrigerant discharged from the discharge port (24, 29) flows and which communicates with the vane chambers (48, 49). The oil separation mechanism (82) that separates the refrigerant and the refrigerating machine oil discharged from the discharge port (24, 29) from each other is disposed in the high-pressure gas space (HS).

A refrigeration apparatus includes a refrigerant unit (U) that includes a first refrigerant circuit (R1) configured to perform a refrigeration cycle by using a first refrigerant, which is a highly flammable refrigerant, in which the first refrigerat circuit (R1) includes a first refrigerant pipe (27a) that is configured to connect a first heat exchanger (23) and a decompression mechanism (24) to each other, a second refrigerant pipe (27b) that is configured to connect the decompression mechanism (24) and a second heat exchanger (22) to each other, a third refrigerant pipe (27c) that is configured to connect the second heat exchanger (22) and a compressor (21) to each other, and a fourth refrigerant pipe (27d) that is configured to connect the compressor (21) and the first heat exchanger (23) to each other, and in which the first to fourth refrigerant pipes (27a to 27d) have structures in which a first capacity, which is a sum of a capacity of the first refrigerant pipe (27a) and a capacity of the second refrigerant pipe (27b), is smaller than a second capacity, which is a sum of a capacity of the third refrigerant pipe (27c) and a capacity of the fourth refrigerant pipe (27d).

The indoor unit is a wall-mounted indoor unit of an air conditioner. The indoor unit includes a heat exchanger, a refrigerant detection sensor, a partitioning member, and an auxiliary pipe. The heat exchanger is disposed in a first space. The refrigerant detection sensor is disposed in a second space. The partitioning member partitions the first space and the second space. The auxiliary pipe is disposed to extend from the first space to the second space across the partitioning member. One end of the auxiliary pipe is connected to the heat exchanger in the first space, and the other end of the auxiliary pipe is located in the second space.

A lower end surface of a roller (36) of a rotary compressor (1) has a horizontal surface (36a) parallel to an upper surface of a rear head (42), and an inclined surface (36b) continuous with an outer peripheral side of the horizontal surface (36a); extending to an outer peripheral surface (36o) of the roller (36); and inclined so as to be positioned higher at a radially outer side.

In a rotary compressor, a cylinder (31, 41, 231, 241, 331) and a closing member (50, 55, 56, 250, 255, 256, 350, 356) are fixed to each other by a plurality of bolts (B) extending in an axial direction of a rotary shaft (90). The plurality of bolts (B) include: a first bolt (B1) between a suction pipe (14, 214a, 214b, 314) and a housing (33, 43) housing a blade (38, 48) as viewed in the axial direction; and a second bolt (B2) between the housing (33, 43) and an imaginary line (IL), which is symmetrical to a center line (AL) of the suction pipe (14, 214a, 214b, 314) with respect to the housing (33, 43), as viewed in the axial direction.

A refrigeration cycle apparatus (100) includes a heat source heat exchanger (13), a utilization heat exchanger (23), and a bridge circuit (40). The heat source heat exchanger (13) includes a refrigerant inlet pipe 13a and a refrigerant outlet pipe 13b. The bridge circuit (40) always causes the refrigerant to flow into a first heat exchanger at the refrigerant inlet pipe and flow out of the first heat exchanger at the refrigerant outlet pipe. The first heat exchanger includes a diverger (50). A diverger body (51) of the diverger (50) has one intake port (53) and a plurality of exhaust ports (54). A plurality of refrigerant paths (61) of the heat source heat exchanger (13) includes a lowest path (61L) disposed at a height (H1) that is lowest. A height (H0) of the plurality of exhaust ports (54) is all higher than the height (H1) of the lowest path.

The reed valve (70) includes a base portion (71) fixed to the valve retainer (60), a tip portion (72) configured to open and close the outflow port (44), and a constricted portion (73) connecting the base portion (71) and the tip portion (72). The constricted portion (73) has a narrower width in a third direction orthogonal to the first direction and the second direction than the base portion (71). An inner side surface (53, 54) forming the valve chamber (50) is formed outside the constricted portion (73) in the third direction as viewed in the second direction. The valve retainer (60) has a side surface (61, 62) formed outside the constricted portion (73) in the third direction as viewed in the second direction.