An air conditioner outdoor unit (1) comprises a case having a rectangular shape and composed of side panels (4, 4,--) in which a machine chamber (3) and a heat exchanger chamber (2) are defined so as to be vertically aligned, with the heat exchanger chamber disposed above the machine chamber (3) and sectioned by a partition plate (12) which also acts as a drain pan, the side panels surrounding the heat exchanger chamber are formed with air suctions ports (4a, 4a --). The outdoor unit (1) further comprises a heat exchanger unit (17, 18) having four side wall sections of which at least two opposing two sections are inclined inwardly by a predetermined angle with respect to inner surfaces of the side panels to which the air suction ports are formed. The outdoor unit case also contains a duct unit (20) arranged in association with the drain pan (12) for discharging drain and cooling an electrical part such as a heat sink (22).

Outdoor unit of air conditioner

In order to prevent the refrigerant in the primary-side circuit from leaking via the secondary-side circuit in a heat pump device that is equipped with a primary-side circuit on the heat source side and a secondary-side circuit on the load side and employs an indirect method, an air conditioner (100) is equipped with: a leakage detection device (13) that detects the leakage of refrigerant circulating in a refrigerant circuit (6), which is the primary-side circuit, from an intermediate heat exchanger (5) to a water circuit (10), which is the secondary-side circuit; and a control device (14) that, when the leakage detection device (13) detects leakage, closes valves (8a, 8b) provided on either side of the intermediate heat exchanger (5) in the water circuit (10), preventing the water in which refrigerant is mixed from flowing past the valves (8a, 8b).

Heat pump device and method for controlling heat pump device

The heat exchanger may include a pipe unit mounted on a refrigerant line connecting a compressor with an evaporator of an air conditioning and adapted to flow a refrigerant and a LPG fuel returned from the engine, a first connecting member mounted at an end of the pipe unit to connect the pipe unit with the refrigerant line where the refrigerant line is connected to the compressor, and a second connecting member mounted at the other end of the pipe unit to connect the pipe unit with the refrigerant line where the refrigerant line is connected to the evaporator. The heat exchanger is configured so that the high-temperature LPG fuel is capable of exchanging heat with the refrigerant.

Heat exchanger for LPI vehicle

A gas heat-pump system is provided. The gas heat-pump system may include an air-conditioning system including at least one compressor, an outdoor heat exchanger, an expander, an indoor heat exchanger, and a refrigerant pipe; an engine configured to provide power for an operation of the at least one compressor, and in which a mixed fuel, in which a fuel and air are mixed, is burned; a cooling water pump which pumps a flow of cooling water that cools the engine; a cooling water pipe connected to the cooling water pump, and configured to guide the flow of the cooling water; an auxiliary heat exchanger in which heat exchange between the cooling water flowing through the cooling water pipe and a refrigerant flowing through the refrigerant pipe is performed; a hot water heat exchanger, in which heat exchange between the cooling water flowing through the cooling water pipe and a fluid supplied from a hot water supply tank is performed; and a plurality of flow switches installed at the cooling water pipe, and controlled so that the cooling water discharged from the engine is guided to the auxiliary heat exchanger or the hot water heat exchanger.

Gas heat-pump system

The present disclosure relates to a system for controlling an air flow rate into a vehicle engine room. The system includes: an air intake port receiving an exterior air at a front portion of the vehicle and supplying the air into the engine room; air ducts formed at both sides of the air intake port and introduce the exterior air into a wheel side in order to improve aerodynamic characteristic; a control valve configured to selectively convey the air flowed in the air intake port into the air ducts; a radiator disposed between the air intake port and the engine room; and a control portion configured to control the control valve based on an operating state of vehicle. The air ducts are selectively communicated with the air intake port and disposed at upstream of the radiator.

Control system of flowing air into vehicle engine room and method for the same

PROBLEM TO BE SOLVED: To provide a stacked type heat exchanger enabling smooth discharge of the drain of gas to be cooled, in regard to the stacked type heat exchanger wherein the gas flows through a return path SOLUTION: A drain hole 9 is provided in one end part of a reversing plate 10 constituting a partition plate, while a gas inlet-outlet 8 is opened in the other end part thereof The area of the opening of the drain hole 9 is made smaller considerably than that of the gas inlet-outlet 8 Moreover, the whole stacked type heat exchanger is inclined so that the gas inlet-outlet 8 of the reversing plate 10 is positioned above the horizontal plane

Stacked type heat exchanger for cooling gas

PURPOSE: To accomplish compactification and to improve wind starting ability by curving blade parts so that the angle radius, which the curved face makes with a radius line employing the axial line as the center, in each part of the curved face of the blade parts is reduced as it goes toward the outside in the radial direction CONSTITUTION: In a fan shroud 7 for a heat exchanger, multiple blade parts 6, which are arranged at some intervals and are parallel to each other, are arranged in a rear part bell mouth 8, which is formed in the rear end part of a shroud main body 2 and is tapered toward the upstream side, while the curved faces of the blades 6 are parallel to the axial line of the shroud main body 2, and the curved faces are curved so that, in each part of the curved faces, an angle which the curved face makes with the radius line employing the axial line as the center is reduced as it goes further to the outside in the radial direction Therefore, wind starting force in the vicinity of the tip part of blades 5 of a fan 4 is increased Especially, a circumferential directional velocity component and a radius directional velocity component are large in the tip part of the blades 5 of the fan 4, so that air flow is smoothly faired by means of the blade parts 6 conforming with the flow in the flow direction, and the wind starting ability is improved as a whole COPYRIGHT: (C)1995,JPO

俊道小林

Papers

Stacked type heat exchanger for cooling gas

Fan shroud for heat exchanger and heat exchanger

俊道 小林

Papers

Stacked type heat exchanger for cooling gas

Fan shroud for heat exchanger and heat exchanger

俊道小林