635 results about "Heater core" patented technology

In an air conditioning apparatus for a vehicle, a water / refrigerant heat exchanger is disposed at a refrigerant discharge side of a compressor of a refrigerant cycle, and a cooling unit for cooling a heat-generating unit with refrigerant having an intermediate pressure of the refrigerant cycle is disposed at a downstream refrigerant side of the water / refrigerant heat exchanger. The air conditioning apparatus includes an evaporator and a hot-water type heater core disposed in an air conditioning duct. In a cooling water circuit, an engine, a radiator and an electrical pump are disposed in addition to the water / refrigerant heat exchanger and the hot-water type heater core. Thus, refrigerant absorbs heat generated in the heat-generating unit, and is heat-exchanged with cooling water in the water / refrigerant heat exchanger after passing through the compressor. As a result, the heat-generating unit can be cooled sufficiently even when outside air temperature is high in the summer, and heating capacity can be effectively improved using heat generated from the heat-generating unit in the winter.

An automotive air conditioning system has a primary hot water circuit 11 located on a side where a vehicle installed heat generator 10 is located and a secondary hot water circuit 13 which includes a hot water type heater core 12 for heating passenger compartment outlet air, whereby when in a heating mode, in the event that a coolant temperature TW1 of the primary hot water circuit is lower than a coolant temperature TW2 of the secondary hot water circuit 13, an opening and closing valve 26 is closed, whereas an opening and closing valve 23 is opened, so that a state is created in which the hot water circuits 11, 13 are separated from each other. On the other hand, in the event that the coolant temperature TW1 of the primary hot water circuit becomes higher than the coolant temperature TW2 of the secondary hot water circuit 13, the opening and closing valve 26 is opened, whereas the opening and closing valve 23 is closed, so that a state is created in which the hot water circuits 11, 13 are connected to each other.

According to the present invention, an air conditioning apparatus include a case partitioned into a first air passage and a second air passage by partition plates (16-19), a heat exchanger such as a heater core. The heater exchanger is sandwiched between the partition plates. Further, the heat exchanger is formed by laminating tubes and a fin while the fin is disposed in each main air passage formed between tube walls of the tubes. Each end of the partition plates is opposite to each end of the tubes so that the partition plates are parallel to the tubes. In this way, airflows which respectively have passed from the air first and second passages pass through the heat exchanger without being mixed with each other therein. As a result, the separation characteristics of airflows can be improved.

A heat pump and air conditioning system for a vehicle that has at least one coolant loop selectively connecting an engine cooling system with a heater core, a first coolant / refrigerant heat exchanger, and / or a second coolant / refrigerant heat exchanger, in order to warm a passenger compartment of the vehicle. The system also includes a refrigerant loop that includes a first expansion device between a condenser and evaporator, and a second expansion device between the first coolant / refrigerant heat exchanger and the second coolant / refrigerant heat exchanger. The refrigerant loop provides for cooling of the passenger compartment of the vehicle, as well as operating as a heat pump, together with the at least one coolant loop, to provide heat to the vehicle passenger compartment.

An intelligent multi-loop thermal management system for and electric vehicle has components including a battery pack, an electric-drive module, an on-board charger a DC / DC converter, a battery radiator, a battery refrigerator, a motor radiator, an electric water pump, an electric oil pump, an expansion tank, a PTC heater, a heat exchanger, an electric compressor, a condenser, an evaporator, a receiver drier, and a heater core. The system also includes an electric-drive module having a drive motor and a motor control unit. The components are thermally connected to each other by using a pipeline and a four-way valve, a three-way valve, a straight-through valve, and an electronic expansion valve that are disposed in the pipeline, to form a plurality of loops that separately performs thermal management and control the battery pack, the electric-drive module, and a passenger compartment air conditioner.

The present invention provides a heating control method for a fuel cell vehicle, in which an additional heating source is used together with a typical electric heater to reduce power consumption and increase fuel efficiency as compared to the sole use of the electric heater. For this purpose, the present invention provides a heating control method for a fuel cell vehicle which comprises an electric heater for heating air supplied to the interior of the vehicle, and a heater core provided in a coolant line for cooling a fuel cell stack and heating the air supplied to the interior of the vehicle by heat exchange with the coolant discharged from the fuel cell stack. The method comprises: detecting a state of charge (SOC) of a battery when the interior temperature is lower than a predetermined temperature set by a driver and, if the SOC of the battery is above a predetermined lower limit, heating the interior of the vehicle by operating the electric heater by the power of a battery; heating the interior of the vehicle by operating the electric heater by the power generated by the fuel cell stack, if the SOC of the battery is below the lower limit; heating the interior of the vehicle using both the heater core and the electric heater, if the temperature of the coolant is above a predetermined temperature at which the fuel cell stack does not reach a normal operating temperature; and heating the interior of the vehicle using only the heater core while turning off the electric heater, if the temperature of the coolant is increased above a normal operating temperature of the fuel cell stack.

A tractor cab roof with integral HVAC air ducts includes an upper roof member and a lower roof member. The upper roof member includes a top panel, downwardly depending side edges, and a downwardly depending rear edge. The lower roof member includes a central panel, left and right side panels below the central panel, a rear panel below the central panel, sloping side walls, and a sloping rear wall. Conditioned air ducts are between the upper roof member and the left and right side panels, with conditioned air outlet apertures in the sloping side walls. An evaporator / heater core is mounted on the rear panel, with an air mixing chamber to the rear and a conditioned air discharge cavity in front. Recirculating air intake apertures are provided where the sloping rear wall joins the rear panel. A pair of blowers move conditioned air from the conditioned air chamber into the conditioned air ducts. The flow of conditioned air crosses over the recirculating air in a figure eight pattern.

An air conditioning system includes an air-cooling unit and an air-heating unit. On a first path in the cooling-unit, provided are a compressor for first refrigerant, a condenser for the first refrigerant, front and rear expansion units for the first refrigerant, and an front and rear evaporators to cool air. On a second path in the air-heating unit, provided are a pump for second refrigerant, and front and rear heater cores for the second refrigerant. The condenser is located also on the second path to achieve heat-exchanging between the first refrigerant and the second refrigerant. During air-heating, air heated by the front and rear heater cores is supplied to a vehicle compartment as conditioned air. During air-cooling, air cooled by the front and rear evaporator is supplied to the vehicle compartment as conditioned air.

In a vehicle air conditioner where air blown into a passenger compartment is heated in a heater core using cooling water for cooling a fuel cell system as a heating source, a flow amount of cooling water flowing into the heat core is controlled by a control valve based on a surplus heat quantity of the fuel cell system and a necessary heat quantity of the passenger compartment. Further, when the surplus heat quantity of the fuel cell system is smaller than the necessary heat quantity, an insufficient heat quantity is supplemented by a supplementary heater.

In a vehicle air conditioner for heating a passenger compartment by a heater core and a heat pump cycle, when operation of a heat pump cycle is switched from a defrosting operation to a heating assist operation, a heating degree of the heater core is increased higher than a predetermined heating degree. Further, when the operation of the heat pump cycle is switched from the defrosting operation to the heating assist operation, an air outlet mode except for a defrosting mode for defrosting a windshield is set. Further, in the defrosting operation of the heat pump cycle, the temperature of an interior heat exchanger of the heat pump cycle is set higher.

In a cooling water circuit system, cooling water pumped by a mechanically-driven first water pump circulates in a cooling water circuit, and flows through a radiator and a heater core in parallel in the cooling water circuit. An electrically-driven second water pump is disposed in the cooling water circuit at a position where cooling water to be supplied to the radiator from the first water pump and cooling water to be supplied to the heater core from the first water pump flow together. A check valve is provided in the cooling water circuit in parallel with the second water pump so that cooling water flows in one way from a water suction side of the second water pump toward a discharge side thereof. Thus, when the second water pump is operated, a total amount of cooling water pumped by the first water pump and the second water pump can flow through the radiator and the heater core. As a result, the cooling water circuit system can improve engine-cooling effect in the summer, while improving heating effect of a passenger compartment in the summer.

In an air conditioning apparatus for a vehicle, plural electrical heating members are integrated with a heater core for heating air. The air conditioning apparatus includes a first control unit for determining number of the electrical heating members to be operated, and a second control unit for controlling electrical power supplied to each of the electrical heating members based on the number determined by the first control unit. The second control unit preferentially supplies electrical power to an electrical heating member plated at a side of a foot opening through which air blown toward a lower side of a passenger compartment. Thus, the lower side of the passenger compartment can be preferentially quickly heated by heat generated from the electrical heating members.

A HVAC and RESS thermal management system and a method of operation for a vehicle having a passenger compartment, a power plant and a battery pack is disclosed. The system comprises a RESS coolant circuit and a power plant coolant circuit. The RESS coolant circuit directs a coolant through the battery pack and includes a pump, a coolant heating branch has a coolant-to-coolant heat exchanger, and a coolant routing valve that will selectively direct the coolant through the coolant heating branch. The power plant coolant circuit includes a heater core branch having a HVAC pump, a coolant heater, a heater core located in a HVAC module to provide heat to the passenger compartment, and the coolant-to-coolant heat exchanger, with the coolant-to-coolant heat exchanger providing heat transfer between the coolant in the coolant heating branch and the coolant in the heater core branch.

The invention relates to an electrombile thermal management system which is combined with cooling of a power device and belongs to the layout field. The electrombile thermal management system comprises a motor cooling liquid circulation system, an air conditioner refrigerating fluid circulation system and a battery pack cooling liquid circulation system. The battery pack cooling liquid circulation system comprises a second water pump, a three-position four-way water valve, a fuel heater, a two-position three-way water valve, a battery pack and a second water tank, wherein the second water pump, the three-position four-way water valve, the fuel heater, the two-position three-way water valve, the battery pack and the second water tank are sequentially connected in a circulated mode, two output ends of the three-position four-way water valve are connected with the input end of the air conditioner refrigerating fluid circulation system and the input end of a battery pack radiator respectively, one output end of the two-position three-way water valve is connected with the input end of a heater core, the output end of the battery pack radiator, the output end of the heater core and the output end of the air conditioner refrigerating fluid circulation system are all connected with the input end of a battery pack, and the heater core is arranged on one side of an electrombile carriage. By means of the electrombile thermal management system, cooling on a motor, a motor controller and a vehicle-mounted charging module can be achieved, and refrigeration and heating on an in-vehicle air conditioner system and temperature control over the battery pack can be achieved.

In a vehicle air conditioning apparatus where temperature of air blown toward a front seat side and temperature of air blown toward a rear seat side of the passenger compartment are independently controlled, a switching door for generally partitioning a downstream warm air passage of a heater core into first and second air passages is disposed at an air outlet side of the heater core. When heating capacity for the front seat side of the passenger compartment is necessary to be increased, the switching door is operated to a rear shutting position so that all air heated by the heater core can be introduced toward the front seat side through the first and second air passages of the warm air passage.

In a vehicle air conditioner with a heat pump cycle having an interior heat exchanger and an exterior heat exchanger, when a frosting on a surface of the exterior heat exchanger is determined and when a temperature of hot water supplied to a heater core is equal to or higher than a predetermined temperature, the exterior heat exchanger is defrosted in a defrosting operation. Accordingly, the defrosting operation can be performed while a sufficient heating can be obtained.

In an air conditioning apparatus for a vehicle, a first cool air bypass passage is provided at an upper side of a heater core, and a second cool air bypass passage is provided at a lower side of the heater core. Cool air from the first cool air bypass passage and warm air having passed through the heater core are mixed in a first air mixing chamber, and a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing film member. Further, cool air from the second cool air bypass passage and warm air from the heater core are mixed in a second air mixing chamber, a ratio between an amount of cool air and an amount of warm air is adjusted by an air mixing door, and the second air mixing chamber is provided at an immediately downstream air side of the heater core. Thus, in the air conditioning apparatus, a pressure loss in a ventilation system can be reduced.

An air conditioning apparatus for a vehicle includes a front air-conditioning unit for adjusting a temperature of air blown toward a front seat side in a passenger compartment, and a rear air-conditioning unit for adjusting a temperature of air blown toward a rear seat side in the passenger compartment. In the front air-conditioning unit, a ratio between an amount of air passing through a front heater core and an amount of air bypassing the front heater core is adjusted by an air mixing door, and the temperature of air blown toward the front seat side in the passenger compartment is adjusted by the rotation of the air mixing door. On the other hand, in the rear air-conditioning unit, a flow control valve for controlling a flow rate of hot water flowing into a rear heater core is provided, and the temperature of air blown toward the rear seat side in the passenger compartment is adjusted by the flow control valve. Thus, the air conditioning apparatus has a downsized rear air-conditioning unit while preventing air-conditioning capacity for the passenger compartment from being lowered.

An ECU executes a program including a step of, if an engine is not in a cold state, controlling electric power to be supplied to an electric water pump such that a flow rate requested at the engine is obtained, a step of, if the engine is in the cold state and a heater is not requested to operate, providing control such that the electric water pump is stopped, and a step of, if the engine is in the cold state and the heater is requested to operate, controlling the electric power to be supplied to the electric water pump such that the flow rate is set to the highest one of the flow rate requested at the engine, a flow rate requested at a heater core, and a flow rate requested at an exhaust heat recovery device.

In an air conditioner for a vehicle, a temperature control unit includes a first air mixing door for adjusting an opening degree of a cool air passage through which air having passed through an evaporator bypasses a heater core, and a second air mixing door for adjusting an opening degree of an air inlet portion of the heater core. At least the second air mixing door between the first and second air mixing doors is a butterfly door having a rotation shaft at a center in a door width direction. When an inside / outside air double-layer flow mode is set, the second door partitions an air passage between the evaporator and the heater core into a first air passage through which outside air flows and a second air passage through which inside air flows while fully opening the air inlet portion of the heater core. Thus, in the air conditioner, a distance between the evaporator and the heater core is reduced while partition performance between inside air and outside air due to the second air mixing door is improved.

Various systems and methods are described for a cooling system coupled to an engine in a vehicle. One example method comprises, during engine off, operating an auxiliary pump to flow coolant through a heater core; and, during engine running, operating an engine pump to flow coolant through the heater core and radiator, and selectively operating the auxiliary pump to assist flow through the heater core based on operating conditions.

Embodiments for heating a vehicle cabin are disclosed. In one example, a method for heating a vehicle cabin comprises closing an exhaust throttle while diverting at least a portion of throttled exhaust gas through an exhaust gas recirculation (EGR) cooler coupled upstream of the throttle, and transferring heat from the EGR cooler to a heater core configured to provide heat to the vehicle cabin. In this way, exhaust heat may be directly routed to the cabin heating system.

A method and apparatus for automatically adjusting the flow rate of engine coolant through a heater core in an automobile by automatically determining a temperature difference between the temperature of coolant at a first flow rate before it enters a heater core and a temperature of air exiting the heater core and automatically increasing the flow rate of the coolant to a second flow rate higher than the first flow rate if the temperature difference is greater than a first predetermined temperature difference.

A mix door D, which is arranged in a limited space defined between an upstream air passage 10 in which an evaporator 3 is installed and a downstream air passage 11 in which a heater core 4 is installed, is of a sliding type. By guiding a door proper 12 by using a cam groove, a seal member 15 bonded to the door proper 12 is pressed against a contacting member 13 only when the door proper 12 assumes its close position. Smoothed operation of the door proper 12 is achieved with a compact construction of a unit, and sealing and temperature controlling performance is increased.

A system for heating and cooling the transmission fluid including a heat exchanger adapted to transfer heat between an engine coolant and a transmission fluid and a controller for controlling a valve to place the system into a select one of three modes including a heater core priority mode wherein no engine coolant flows to the heat exchanger, a heating mode wherein hot engine coolant flows directly to the heat exchanger from the engine and a cooling mode wherein cool engine coolant flows directly to the heat exchanger from the radiator, whereby the transmission fluid is heated in an efficient manner with minimal impact on passenger compartment heating.

The present invention provides a method and apparatus to quickly raise the temperature of an internal combustion engine and the temperature of the ambient air in a passenger compartment of a vehicle. The apparatus comprises a heating element that quickly realizes a temperature of approximately 300 degrees F. Heating system fluid flows across this heating element which raises the temperature of the heating system fluid. This now heated heating system fluid flows through heater core tubes which are connected to heater core fins, thus raising the ambient temperature air which is blown over the heater core fins and into the passenger compartment. The heated heating system fluid also flows over the engine thus helping to raise the operating temperature of the engine.

The amount of cooling water supplied to an automobile air conditioner heater core is adjusted based on a user set temperature. The heater core has two tanks spaced from each other by a predetermined distance. Cooling water is introduced and discharged into the first or second tank via inlet and outlet pipes respectively connected to the tanks. Ends of plural tubes are respectively fixed between the tanks. Fins extend between the tubes. Cooling water is supplied to one side of the inlet pipe. The cooling water is discharged through a bypass line at one side of the inlet pipe without passing through the heater. The amount of cooling water introduced into the heater core is adjusted by a liquid flow rate controller.