摘要:
A compressor includes front and rear cylinder blocks, a drive shaft rotatably supported by the cylinder blocks, a swash plate mounted on the drive shaft, a plurality of cylinder bores defined in the cylinder blocks and located around the drive shaft, and a plurality of pistons respectively disposed in the cylinder bores. The pistons reciprocate by converting rotation of the drive shaft with the swash plate. A plurality of compression chambers are defined in the cylinder bores for compressing the gas supplied to the cylinder bores in accordance with the reciprocating movement of the pistons. Each compression chamber has dead volume defined by a space having a predetermined volume when the associated piston is at top dead center in each cylinder bore. A reference capacity is defined by the capacity when the piston is at a bottom dead center of the cylinder bore that has the smallest dead volume. The largest dead volume is greater than the minimum dead volume by approximately four percent of the reference capacity.
摘要:
An air conditioning system 100 may include a compressor 101 having a driving chamber 110, a cooling circuit 151, a heating circuit 152 and capacity controllers 301, 401. The compressor 101 may have a suction port 115, a discharge port 120, a driving unit 130 provided within the driving chamber 110. The driving unit 130 decreases compressor output discharge capacity when pressure within the driving chamber 110 increases. The first capacity controller 301 and the second capacity controller 401 are provided in series onto the capacity control passage 321, 323, 421. The first capacity controller 301 opens the capacity control passage 321, 323 when compressor suction pressure Ps results predetermined low-pressure state during operation of the cooling circuit 151 and the second capacity controller 401 opens the capacity control passage 323, 421 during operation of the cooling circuit. As the result, the heat exchanger 159 in the cooling circuit 151 is prevented from being frosted. The first capacity controller 301 opens the capacity control passage 321, 323 during operation of the heating circuit 152 and the second capacity controller 401 opens the capacity control passage 323, 421 when compressor discharge pressure Pd results predetermined high-pressure state during operation of the heating circuit 152. As the result, the heating circuit 152 is prevented from being damaged by an abnormally high discharge pressure.
摘要:
An improved viscous fluid type heater is disclosed. The heater has a heating chamber and a heat exchange chamber. The heating chamber accommodates viscous fluid and a rotor that rotates and shears the viscous fluid to produce heat. The heat exchange chamber allows circulating fluid to flow therethrough, whereby the heat is transmitted to the heat exchange chamber from the heating chamber to heat the circulating fluid. A reservoir chamber communicates with the heating chamber for an auxiliary reservoir of the viscous fluid. A stirring member is provided in the reservoir chamber and stirs the viscous fluid in the reservoir chamber.
摘要:
A viscous fluid type heat generator including a housing assembly defining therein a heat generating chamber and a heat receiving chamber, a drive shaft rotatably supported by the housing assembly, a rotor element mounted to be rotationally driven by the drive shaft for rotation within the heat generating chamber, and a viscous fluid, held in a gap defined between the inner wall surfaces of the heat generating chamber and the outer surfaces of the rotor element, for heat generation under shearing stress applied by the rotation of the rotor element. At least a part of the housing assembly, which defines the heat generating chamber, is made of a material of which a linear expansion coefficient is larger than that of a material of the rotor element.
摘要:
An improved viscous fluid type heater is disclosed. The heater has a heating chamber that has a inner peripheral surface and a pair of inner side surfaces and a heat exchange chamber disposed adjacent to the heating chamber. The heating chamber houses a cylindrical rotor that has an outer peripheral surface and a pair of outer side surfaces. The outer peripheral surface is opposed to the inner peripheral surface by a first space. The outer side surface is opposed to an associated inner side surface by a second space that communicates the first space. The rotor rotates and shears viscous fluid to generate heat in the spaces. The heat generated in the spaces is transmitted to the heat exchange chamber to heat circulating fluid circulating in the heat exchange chamber and an external fluid circuit. The rotor has a storing chamber defined therein. A first passage connects the first space with the storing chamber to shift the viscous fluid from the storing chamber to the first space. A second passage connects the second space with the storing chamber to shift the viscous fluid from the second spaces to the storing chamber. A valve actuated in association with heat generating capacity of the rotor to adjust flow of the viscous fluid passing through the first passage.
摘要:
An occupant load sensor (10) is fixed to a bracket (48) via a sleeve (60a) of a collar (60) arranged in an outer periphery of a thread (32) of a bolt portion (30), and a bush (62) interposed between the sleeve (60a) and a through hole (48a) of the bracket (48). Accordingly, a slight movement is allowed between the bolt portion (30) and the bracket (48) on the basis of gaps formed between the thread (32) and the sleeve (60a) and between the sleeve (60a) and the bush (62), and it is possible to cancel a force applied from the other directions than a vertical direction. Therefore, a load from the seat side is applied in the vertical direction and it is possible to accurately detect.
摘要:
To make it possible to provide high quality heating or warming with low environmental pollution for a low environmental pollution vehicle such as an electric vehicle or a hybrid vehicle, an automotive air-conditioning apparatus has a hot water circuit that includes a hot water heater (heat source unit), a hot water circulating pump and a heater core to thereby perform a heating operation for heating passenger compartment air wherein, an electric motor is excited under the condition that the rotation thereof is fixed to thereby generate heat in the electric motor. The generated heat is utilized as a heat source for the hot water heater. The restricting mechanism may include two electric motors which are rotated in opposite directions to each other or a lock mechanism. Also, a cooling operation for cooling the passenger compartment air may be performed by driving the compressor (heat source unit) with the electric motors, a dehumidifying operation may be performed by simultaneously effecting the heating and cooling operations, or a heat pump type heating operation may be performed by having the refrigerant circuit acting reversibly.
摘要:
An air conditioning system including a compressor, a heating circuit, and a capacity controller. The compressor has a suction port, a discharge port, a driving unit provided within a driving chamber, a first passage and a second passage. The driving unit may decrease compressor output discharge capacity when the pressure within the driving chamber increases. The first passage may connect the discharge port to the driving chamber and the second passage may connect the driving chamber to the suction port. The capacity controller may open the first passage when the refrigerant discharge pressure reaches or exceeds a predetermined set point pressure. By opening the first passage, the high-pressure refrigerant may be released from the discharge port to the driving chamber through the first passage. Thus, the pressure within the driving chamber may increase, the compressor output discharge capacity can be reduced, the abnormally high discharge pressure of the compressor can be alleviated by the reduction in the compressor output discharge capacity.
摘要:
An air conditioning system 100 may include a compressor 101 having a driving chamber 110, a cooling circuit 151, a heating circuit 152 and a controller 189. This system may release high pressure refrigerant from the compressor discharge port 120 into the compressor driving chamber 110 by means of the controller 189. The controller 189 may include a selector 181, a first refrigerant releasing means 183 and a second refrigerant releasing means 185. The selector 181 connects the discharge port 120 and the driving chamber 110 by both the first and second refrigerant releasing means 183, 185 when discharge pressure of the refrigerant has reached a predetermined high-pressure state during operation of the heating circuit 152. When the discharge pressure of the refrigerant results an abnormal high pressure state during the operation of the heating circuit 152, the high pressure refrigerant is released from the discharge port 120 into the driving chamber 110 not only by a single refrigerant releasing means 185 but by double refrigerant releasing means 183, 185. Therefore, the high pressure refrigerant can be swiftly released into the driving chamber 110 to increase the pressure in the driving chamber 110 and the necessary time for reducing the compressor discharge pressure can be minimized. Thus, the abnormal high discharge pressure can be quickly alleviated.
摘要:
A vehicle heater for generating heat for heating a vehicle compartment. The heater includes a rotor rotated by a vehicle engine. The rotor has a predetermined thickness and a peripheral edge. The heater further includes a heating chamber for accommodating the rotor and a fluid. The fluid is heated in the heating chamber when the rotor rotates. The heater further includes a reservoir. The fluid from the heating chamber is stored in the reservoir. The heater further includes a return passage connecting the reservoir and the heating chamber. The fluid returns from the heating chamber to the reservoir through the return passage. The return passage has an entrance opening in an inner wall of the heating chamber. The entrance opening faces the peripheral edge of the rotor, and the maximum width of the entrance opening is greater than the thickness of the rotor.