摘要:
A speaker system having a structure in which the room surrounding the first diaphragm and the room adjacent to the second diaphragm are acoustically coupled. The second diaphragm has coating on a surface. Applying the coating to the second diaphragm enhances the reliability and performance of the speaker system. Besides, the diversely definable geometry of the diaphragm allows an electronic device employing the speaker system or the speaker module to have flexibility in design.
摘要:
A first diaphragm and a second diaphragm are acoustically coupled with each other as a part of a wall forming a hermetic space with a panel. A light emitting section emits light to the panel, and the panel transmits the light to a side of the second diaphragm. A speaker module mentioned above not only emits sound but also improves in design.
摘要:
The air heating capability of an indoor heat exchanger is limited to set the temperature of the indoor heat exchanger to a first predetermined temperature Tel or lower during heating. Thereby, fogging is prevented through re-evaporation of the condensed water in the indoor heat exchanger during heating within an air-conditioning apparatus with a hot water heater core using hot water as the heat source and the heating circuit.
摘要:
Heat exchange is performed between a discharge side refrigerant and a suction side refrigerant also at the time of a heating operation. By this, a liquid phase refrigerant containing lubricating oil in the suction side refrigerant is heated by the discharge side refrigerant, and the liquid phase refrigerant is vaporized also at the time of the heating operation, so that the amount of the liquid phase refrigerant sucked into a compressor is decreased. Accordingly, the increase of compression work of the compressor is prevented, and an opening area of an oil return hole can be expanded to such a degree that an optimum amount of lubricating oil is attained at the time of the heating operation.
摘要:
In a refrigerant cycle system, a control unit controls both a refrigerant amount discharged from a compressor and an opening degree of a pressure control valve so that theoretical efficiency of a super-critical refrigerant cycle and efficiency of the compressor are improved. Therefore, the effective coefficient of performance of the refrigerant cycle is improved, while necessary capacity of components of the refrigerant cycle is obtained.
摘要:
In a refrigerant cycle system, a gas-liquid separator has a gas-suction pipe for introducing gas refrigerant from the gas-liquid separator to a compressor. The gas-suction pipe has an open end opened in a gas-refrigerant area in the gas-liquid separator, a first suction hole, provided in a liquid-refrigerant area of the gas-liquid separator, for sucking liquid refrigerant containing lubricating oil, and a second suction hole provided in the gas-refrigerant area of the gas-liquid separator. The second suction hole for sucking gas refrigerant is formed in the gas-suction pipe at a downstream refrigerant side of the first suction hole. Therefore, a flow rate of gas refrigerant passing through around the first suction hole in the gas-suction pipe is decreased due to introduction of gas refrigerant by the second suction hole, thereby decreasing quantity of liquid refrigerant sucked from the first suction hole. Thus, liquid refrigerant is prevented from excessively returning to the compressor, even if the first suction hole is enlarged.
摘要:
A control apparatus for a gas injection type air conditioning system that prevents lowering of compressor speed and cycle stoppage under conditions where high pressure is liable to occur. During a system heating mode, a pressure change rate ASP of the high pressure of the refrigerating cycle is calculated. When a pressure change rate .increment.SP rises above a predetermined value, a system electric expansion valve aperture is reduced. Accordingly, by calculation of the pressure change rate .increment.SP, it is possible to control the electric expansion valve in the above manner earlier than in prior art control schemes when there is a sudden rise in the high pressure.
摘要:
According to the present invention, in a heating operation where a heating indoor heat exchanger function as a condenser and an outdoor heat exchanger functions as an evaporator, an air amount supplied by a blower is reduced when a predetermined amount of frost is or may be deposited on the outdoor heat exchanger in an outside air introduction mode where an outside air is supplied into a passenger compartment. Accordingly, a heating load is reduced to thereby reduce an endothermic amount in the outdoor heat exchanger. As a result, a frost deposition speed is reduced, and a deposited frost limit is increased, thereby extending a heating operation period.
摘要:
When a defroster switch is input in a heating operation mode, an opening degree of an electric type of a heating expansion valve is controlled to be smaller when temperature of refrigerant discharged from a compressor is less than a predetermined temperature. Therefore, the supercooling degree of the liquid refrigerant of an indoor heating heat exchanger becomes large, the temperature of the heat exchanger becomes high, so that the temperature of air which is blown from a defroster outlet becomes high. Thus, the defrosting effect of a front windshield glass can be increased. Accordingly, when the defrosting of the front windshield is needed, the defrosting effect is increased as compared with when the defrosting is not needed.
摘要:
There is provided a scanning probe microscopy comprising a probe 6 situated to face the surface of an sample 1, a first piezoelectric element 8 for moving the sample 1 and the probe 6 relative to each other in a first direction perpendicular to the surface of the sample, and second and third piezoelectric elements 3 and 4 for moving the probe and the sample relative to each other in second and third directions perpendicular to the first direction, thereby enabling the probe to scan the surface of the sample, wherein at least one of the first to third piezoelectric elements 8, 3 and 4, which is closest to the sample 1, is formed of a single crystal.