A refrigerating cycle device using carbon dioxide as refrigerant capable of solving such a problem that when a receiver is installed against a low pressure, a cost and a volume are increased by a pressure resistant design to assure safety, wherein a first pressure reducing device (12) and a second pressure reducing device (15) are operated to vary the refrigerant pressure of a first heat exchanger (13) so as to regulate the refrigerant hold amount of the first heat exchanger, whereby since the unbalance of the amount of refrigerant between cooling and heating/dehumidifying can be reduced, the refrigerating cycle device can be efficiently operated with a downsized receiver or without installing the receiver.

Refrigerating cycle device

An outdoor unit of an air conditioner is provided. The outdoor unit includes a base assembly defining a lower exterior of the outdoor unit and supporting a plurality of parts, left and right panels that are provided on the base assembly to define left and right exteriors of the outdoor unit, a pair of top panels that are provided between upper ends of the left and right panels to define a top exterior of the outdoor unit, a blower assembly including a blower fan generating air current and a motor providing a torque to the blower fan, a frame assembly supporting the blower assembly and including a pair of transverse supports interconnecting the left and right panels and a motor mount disposed between the pair of transverse supports to support the motor, and a shroud enclosing the blower fan and the motor and guiding airflow generated by the blower fan. The motor mount is received to an inside of the shroud.

Outdoor unit of air conditioner

An indoor unit (100) includes a casing (1) having a suction port (2) formed on an upper portion and a blow-out port (3) on a lower side of a front surface portion, an axial-flow or mixed-flow fan (20) provided on the downstream side of the suction port (2) in the casing (1), and a heat exchanger (50) provided in the casing (1) at a position on the downstream side of the fan (20) and on the upstream side of the blow-out port (3). The heat exchanger (50) includes a plurality of fins (56) arranged side by side with predetermined gaps therebetween and a plurality of heat-transfer tubes (57) penetrating through the plurality of fins (56). The heat exchanger is configured in such a manner that the air-flow resistance of an area facing the outer peripheral side of the fan (20) is larger than the air-flow resistance of an area facing a center portion of the fan (20).

Indoor unit of air-conditioning apparatus and air-conditioning apparatus

An outdoor air conditioner unit is connected to indoor units by a gaseous refrigerant communication pipe and a liquid refrigerant communication pipe. The outdoor air conditioner unit is provided with a gas-side shut-off valve and a liquid-side shut-off valve. The gas-side shut-off valve has a pipe connecting port to which the gaseous refrigerant communication pipe is connected. The liquid-side shut-off valve has a pipe connecting port to which the liquid refrigerant communication pipe is connected. In a plan view, the pipe connecting ports are offset from each other in both the depthwise direction and the widthwise direction. Thus, the outdoor air conditioner unit is configured to reduce interference between the refrigerant pipes connected to the gas-side and liquid-side shut-off valves of the outdoor unit.

A front panel constituted by a synthetic resin molded product is used with respect to a base panel, side panels, and a top panel which are formed of a metal, first retaining means for the side panels and second retaining means for the top panel are provided on the front panel to effect fixation.

PROBLEM TO BE SOLVED: To make compact and silent an outdoor machine for an air conditioner which uses the air blowing-out surface of an axial fan installed to the upper section of an enclosure as its upper surface by providing a corner guide to at least one of the void sections in the corner sections formed of the front-face plate, roof plate, and one side-face plate which is adjacent to the front-face plate SOLUTION: A top-flow type outdoor machine 1 is provided with air supplying openings on its side-face sides and a heat exchanger 8 on its back side The machine 1 is also provided with a compressor 9, an accumulator 10, an axial fan, a bell mouth 12, etc, and a heat-exchanged wind exhausted front the fan 11 is discharged upward after passing through an exhaust pipe 7 and a guard net 16 In the machine 1, a corner guide 18a is provided to the void of each corner section formed of the front-face plate 2, side-face plate, roof plate 6, and bell mouth of the machine 1 Therefore, the outdoor machine 1 can be operated silently, because the heat-exchanged wind sucked from the heat exchanger 8 is prevented front staying in the voids of the corner sections and, at the same time, the efficiency deterioration of the fan 11 caused by uneven flows in the circumferential direction can be suppressed

Outdoor machine for air conditioner

PROBLEM TO BE SOLVED: To decrease channel resistance by providing a motor supporting plate for supporting a fan comprising a supply/suction fan and a drive motor for fan between the bottom plate of a housing and the drive motor for fan thereby halving the area of the motor supporting plate when viewed from the front side of an outdoor unit SOLUTION: A motor supporting plate 1 comprises a pair of main plates 2a, 2b and an auxiliary plate 3 wherein the fixing legs 6 of a drive motor 5 for fan are supported by the main plates 2a, 2b, at the upper ends thereof, and fixed to a bottom plate 7 by means of an auxiliary plate 3 A heat exchanger 8 is disposed on the back face side of the bottom plate 7 The motor supporting plate 1 is placed between the drive motor 5 for fan and the bottom plate 7 and not placed between the drive motor 5 and a top plate 10 A specified space is thereby ensured at the upper half in the housing defined by the bottom plate 7, a front plate 9, the top plate 10, and the like, and channel resistance is decreased by halving the occupation area of the motor supporting plate 1 when viewed from the front side of an outdoor unit

Outdoor unit for air conditioner

PROBLEM TO BE SOLVED: To provide an outdoor unit for improving heat exchange efficiency of the outdoor unit even when arranged in close vicinity to the other outdoor unit and a building wall. SOLUTION: A heat exchanger 9 is arranged along at least three side surfaces 17b, 17c and 17d of a casing 3 in the casing 3 having a fan 5 for upwardly blowing off inside air from the upper surface side. The heat exchanger 9 is formed in the shape of overhanging a central part of a part running along the side surfaces 17b and 17c of the casing 3 in the outside direction of the casing 3 when viewed from the upper surface side of the casing 3. Spaces 19a and 19b for enlarging an interval for turning to both corner parts from the central part of the side surfaces 17b and 17c are formed between the side surfaces 17b and 17c of the casing 3 and a part of the heat exchanger 9 running along the side surfaces 17b and 17c. Suction ports 26 and 27 for respectively communicating with the spaces 19a and 19b are arranged on the three side surfaces 17a, 17b and 17c for defining the space 19a and the three side surfaces 17a, 17d and 17c for defining the space 19b. COPYRIGHT: (C)2004,JPO

Outdoor unit of air conditioner, and air conditioner equipped with this outdoor unit

A heat source unit, for facilitating the maintenance of a fan assembly even in a ceiling having a limited space, including: a rectangular housing (12); an air inlet (24) and an air outlet (26) which are provided in the same side surface of the housing; a fan assembly (18) which includes a sirocco fan (28) disposed in the housing and a fan motor (30) driving the sirocco fan; a heat exchanger (16) which performs a heat exchange using air sucked from the air inlet; and a compressor (14). Particularly, on a side surface (36) (rear side surface) opposed to a side surface (22) (front side surface) on which the air inlet of the housing is provided, there is provided an openable extraction port which is used to extract the fan assembly. In addition, on a separation plate (38) of the housing is provided a pair of guide rails (58) which are disposed in a direction along left and right side surfaces (32 and 34) of the housing, and a mounting member (43) to which the fan assembly is fixed is guided by the guide rails so as to be extracted to the outside of the housing in a sliding manner.

Heat source unit installed into ceiling and air conditioner

PROBLEM TO BE SOLVED: To provide an outdoor unit for an air conditioner carrying out miniaturization, preventing deterioration of air blowing performance due to miniaturization, and capable of carrying out noise reduction. SOLUTION: The outdoor unit for the air conditioner is provided with a bottom base 12, a heat exchanger 107 arranged in an upper part of the bottom base, a shroud 103 arranged facing the bottom base, and a blower having propeller fans 104 arranged so as to be surrounded by the shroud and a motor driving the propeller fans. When a protruding amount of the propeller fan from an uppermost position of the shroud is ht, and a height of the propeller fan is H, it is composed such that -0.2≤ht/H≤0.2. COPYRIGHT: (C)2008,JPO&INPIT

Tetsushi Kishitani

Papers

Outdoor machine for air conditioner

Outdoor unit for air conditioner

Outdoor unit of air conditioner, and air conditioner equipped with this outdoor unit

Heat source unit installed into ceiling and air conditioner

Outdoor unit for air conditioner, and air conditioner