WO2015040803A1 - 車両用空調ユニット - Google Patents
車両用空調ユニット Download PDFInfo
- Publication number
- WO2015040803A1 WO2015040803A1 PCT/JP2014/004466 JP2014004466W WO2015040803A1 WO 2015040803 A1 WO2015040803 A1 WO 2015040803A1 JP 2014004466 W JP2014004466 W JP 2014004466W WO 2015040803 A1 WO2015040803 A1 WO 2015040803A1
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- WIPO (PCT)
- Prior art keywords
- air
- ventilation path
- blower
- communication
- conditioning case
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H1/00035—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment
- B60H1/0005—Air flow details of HVAC devices for sending an air stream of uniform temperature into the passenger compartment the air being firstly cooled and subsequently heated or vice versa
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00664—Construction or arrangement of damper doors
- B60H1/00671—Damper doors moved by rotation; Grilles
- B60H1/00678—Damper doors moved by rotation; Grilles the axis of rotation being in the door plane, e.g. butterfly doors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00835—Damper doors, e.g. position control
- B60H1/00842—Damper doors, e.g. position control the system comprising a plurality of damper doors; Air distribution between several outlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
- B60H1/00835—Damper doors, e.g. position control
- B60H1/00849—Damper doors, e.g. position control for selectively commanding the induction of outside or inside air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00078—Assembling, manufacturing or layout details
- B60H2001/00085—Assembling, manufacturing or layout details of air intake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00078—Assembling, manufacturing or layout details
- B60H2001/00092—Assembling, manufacturing or layout details of air deflecting or air directing means inside the device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00078—Assembling, manufacturing or layout details
- B60H2001/00107—Assembling, manufacturing or layout details characterised by the relative position of the heat exchangers, e.g. arrangements leading to a curved airflow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
- B60H1/00021—Air flow details of HVAC devices
- B60H2001/00114—Heating or cooling details
- B60H2001/00135—Deviding walls for separate air flows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00664—Construction or arrangement of damper doors
- B60H2001/00721—Air deflecting or air directing means
Definitions
- This disclosure relates to a vehicle air conditioning unit having two ventilation paths formed in parallel to each other.
- Patent Document 1 is disclosed as a conventional technique related to a vehicle air conditioning unit.
- the vehicle air conditioning unit of Patent Document 1 includes an air conditioning case and an evaporator that is a heat exchanger provided in the air conditioning case.
- the heat exchange part of the evaporator is divided into a first part and a second part.
- the conditioned air flowing in the air conditioning case passes through the first portion of the evaporator, then further passes through the second portion of the evaporator, and is then blown out into the vehicle interior. In this way, by passing the conditioned air through the evaporator twice in the air conditioning case, the air blown into the vehicle compartment can be efficiently cooled as compared with the case of passing it once.
- the temperature of the conditioned air can be adjusted efficiently.
- the pressure loss increases as compared with the case of one time. Therefore, there is a possibility that it is difficult to blow conditioned air with a large air volume.
- the present disclosure can efficiently adjust the air temperature by passing air through the heat exchanger twice in the air conditioning case, and has priority over passing air twice through the heat exchanger. It aims at providing the air-conditioning unit for vehicles which can reduce the pressure loss in the inside air flow.
- An air conditioning unit for a vehicle includes an air conditioning case, a first ventilation path and a second ventilation path formed in parallel with each other in the air conditioning case, and one end of the first ventilation path. And a first communication ventilation path that communicates with one end of the second ventilation path, and air that flows in the first ventilation path between one end and the other end of the first ventilation path provided in the first ventilation path.
- a first heat exchanger that heats or cools and a second heat exchange that heats or cools the air that is provided in the second ventilation path and flows through the second ventilation path between one end and the other end of the second ventilation path
- a blower mode switching device that switches to any one of a plurality of blower modes.
- the plurality of ventilation modes are: (i) air is introduced from one outside of the air conditioning case to one end of the first ventilation path, and the air is circulated from one end to the other end of the first ventilation path, and from the other end of the first ventilation path to the vehicle interior.
- the air is introduced to one end of the second ventilation path from outside the air conditioning case, and the air is circulated from one end of the second ventilation path to the other end, and is blown from the other end of the second ventilation path to the vehicle interior.
- Air is introduced from the outside of the air conditioning case to the other end of the first ventilation path, and the air is circulated from the other end of the first ventilation path to the one end, and then the first ventilation mode is passed through the first communication ventilation path.
- 2nd ventilation mode which distribute
- the air introduced from the outside of the air conditioning case to the other end of the first ventilation path circulates from the other end of the first ventilation path to the one end and then through the communication ventilation path.
- An air conditioning case flows to one end of the second ventilation path, and air at one end of the second ventilation path flows from one end to the other end of the second ventilation path and blows out from the other end of the second ventilation path to the vehicle interior.
- the air introduced into the vehicle passes through the first heat exchanger and the second heat exchanger in order, and then blows out into the passenger compartment. Therefore, the air temperature can be adjusted efficiently by passing the air through the heat exchanger twice in the air conditioning case.
- air introduced from one outside of the air conditioning case to one end of the first ventilation path circulates from one end of the first ventilation path to the other end and blows out from the other end of the first ventilation path into the vehicle interior.
- the air introduced from the outside of the air conditioning case to one end of the second ventilation path flows from one end of the second ventilation path to the other end and blows out from the other end of the second ventilation path to the vehicle interior.
- the air passes through one of the first heat exchanger and the second heat exchanger and blows out into the passenger compartment without passing through the other. Therefore, in the 1st ventilation mode, pressure loss in the air flow in an air-conditioning case can be reduced compared with the 2nd ventilation mode in which air is passed through a heat exchanger twice in an air-conditioning case.
- FIG. 1 is a cross-sectional view schematically showing a vehicle air conditioning unit 10 of the present embodiment.
- the vehicle air conditioning unit 10 (hereinafter referred to as the air conditioning unit 10) is disposed in a front portion of the vehicle interior.
- the air conditioning unit 10 constitutes a part of a vehicle air conditioner that includes a refrigeration cycle including a compressor, a condenser, and the like disposed in an engine room, for example.
- the arrow which shows the up-down direction of FIG. 1 has shown the up-down direction in the vehicle mounting state of the air conditioning unit 10.
- the vehicle vertical direction which is the vertical direction in the vehicle mounted state, is referred to as the vertical direction
- the direction orthogonal to the vehicle vertical direction is referred to as the horizontal direction.
- the air conditioning unit 10 includes an air conditioning case 12, a first blower 14, a second blower 16, a first evaporator 18, a second evaporator 20, a first heater core 22, a second heater core 24, and an air conditioning case 12. And a plurality of doors for switching the air flow, and an electronic control unit (hereinafter referred to as ECU) 26.
- ECU electronice control unit
- the air conditioning case 12 has an air passage inside thereof and constitutes a casing of the air conditioning unit 10.
- the air conditioning case 12 is made of resin, for example.
- the air conditioning case 12 includes a first ventilation path 121, a second ventilation path 122, an outside air introduction port 123, a first inside air introduction port 124, an intake portion 125, a circulation circulation air passage 126, and a first fan housing.
- the first ventilation path 121 and the second ventilation path 122 both extend so as to flow air in the horizontal direction, and are formed in parallel to each other.
- the first ventilation path 121 is disposed above the second ventilation path 122.
- the outside air inlet 123 communicates with a space outside the vehicle compartment via an outside air inlet (not shown) provided in the vehicle body and a duct. Further, the first inside air introduction port 124 communicates with the vehicle interior via a duct (not shown).
- the outside air introduction port 123 and the first inside air introduction port 124 are both connected to the intake portion 125 in the air conditioning case 12. That is, the outside air introduction port 123, the first inside air introduction port 124, and the intake portion 125 constitute an air introduction unit for introducing air outside the air conditioning case 12 as a whole.
- the inside / outside air switching door 30 constituted by the first door 301 and the second door 302
- the outside air introduction port 123 and the first inside air introduction port 124 are respectively opened and closed.
- the first door 301 and the second door 302 rotate integrally.
- the inside / outside air switching door 30 rotates to, for example, a first switching position, a second switching position, or a third switching position.
- the inside / outside air switching door 30 is positioned at the first switching position, the first door 301 closes the outside air introduction port 123 and the second door 302 closes the first inside air introduction port 124.
- the outside air introduction port 123 is opened and the first door 301 closes the first inside air introduction port 124.
- the second door 302 closes the outside air introduction port 123 and the first inside air introduction port 124 is opened. That is, when the inside / outside air switching door 30 is in the first switching position, the introduction of air from the outside of the air conditioning case 12 through the air introducing portion is blocked, and the inside / outside air switching door 30 is positioned at the second switching position. Then, outside air that is air outside the vehicle compartment is introduced through the air introduction portion, and when the inside / outside air switching door 30 is positioned at the third switching position, the inside air that is air inside the vehicle compartment is introduced through the air introduction portion. Is done.
- the ring circulation air passage 126 connects the one end 121 a of the first air passage 121 and the intake portion 125.
- the ring circulation air passage 126 is provided with a ring circulation air passage door 32, and the ring circulation air passage door 32 opens and closes to open and close.
- the first blower housing part 127 houses the first blower 14.
- the first blower housing portion 127 is connected to one end 121 a of the first ventilation path 121 on the air blowing side of the first blower 14, and is connected to the intake portion 125 on the air suction side of the first blower 14.
- the second inside air introduction port 128 communicates with the vehicle interior via a duct (not shown).
- the second inside air introduction port 128 is provided with a second inside air door 34, and the second inside air door 34 rotates to open and close the second inside air introduction port 128.
- the second fan 16 is accommodated in the second fan accommodating portion 129.
- the second blower accommodating portion 129 is connected to one end 122a of the second ventilation path 122 on the air blowing side of the second blower 16, and the second inside air introduction port 128 and the first communication ventilation on the air suction side of the second blower 16. It is connected to the path 130.
- the first communication air passage 130 is connected to the intake portion 125 at one end of the first communication air passage 130. That is, one end of the first communication air passage 130 is connected to one end 121 a of the first air passage 121 via the intake portion 125 and the ring circulation air passage 126.
- the first communication ventilation path 130 is connected to the second blower housing portion 129 at the other end of the first communication ventilation path 130. That is, the other end of the first communication air passage 130 is connected to one end 122 a of the second air passage 122 via the second blower housing portion 129.
- the first communication ventilation path 130 is a ventilation path that connects the one end 121 a of the first ventilation path 121 and the one end 122 a of the second ventilation path 122.
- first communication ventilation path 130 is provided with a first communication ventilation path door 36, and the first communication ventilation path door 36 opens and closes to open and close the first communication ventilation path 130.
- the second communication ventilation path 132 is a ventilation path that connects the first blower housing portion 127 and one end 122 a of the second ventilation path 122.
- a second communication air passage door 38 is provided in the second communication air passage 132.
- the second communication air passage door 38 is rotated and positioned at one of the two communication positions. In the first communication position, the second communication air passage door 38 blocks the communication between the one end 121a of the first air passage 121 and the first blower accommodating portion 127, as shown in FIG.
- the ventilation path 132 is opened. Further, at the second communication position, the second communication air passage door 38 communicates between the one end 121a of the first air passage 121 and the first blower housing portion 127 as shown in FIG.
- the two communicating air passages 132 are closed.
- the second communication air passage door 38 is rotated to the first communication position or the second communication position, so that the air blowing destination of the first blower 14 is changed to the second communication air passage 132 and the first air passage 121. It functions as a switching unit that switches between the two.
- the third communication air passage 133 shown in FIG. 1 connects the other end 122b of the second air passage 122 to the other end 121b of the first air passage 121, the first air outlet 134, and the second air outlet 135. Road.
- the third communication ventilation path 133 is provided with a third communication ventilation path door 40, and the third communication ventilation path door 40 rotates to open and close the third communication ventilation path 133.
- the 1st blower outlet 134 is connected to the blower outlet arrange
- the first air outlet 134 is connected to the other end 121 b of the first ventilation path 121 in the air conditioning case 12.
- the first air outlet 134 is provided with a first air outlet 42, and the first air outlet door 42 opens and closes to open and close the first air outlet 134.
- the second air outlet 135 is connected to air outlets arranged above the center of the dashboard and above both left and right ends of the dashboard in the vehicle interior via a duct (not shown). That is, the second air outlet 135 is a face air outlet for blowing out air toward the upper body including the face of the seated person in the passenger compartment.
- the second air outlet 135 is connected to the other end 121 b of the first ventilation path 121 in the air conditioning case 12. Further, the second outlet 135 is connected to the other end 122 b of the second ventilation path 122 through the third communication ventilation path 133.
- the second air outlet 135 is provided with a second air outlet 44, and the second air outlet 44 rotates to open and close the second air outlet 135.
- the 3rd blower outlet 136 is connected to the blower outlet arrange
- the third air outlet 136 is connected to the other end 122 b of the second ventilation path 122 in the air conditioning case 12.
- the third outlet door 46 is provided with a third outlet door 46. The third outlet door 46 opens and closes to open and close the third outlet port 136.
- an intermediate mode door 48 is provided at the other end 121b of the first ventilation path 121, and the intermediate mode door 48 is positioned at one of two intermediate mode positions.
- the intermediate mode door 48 In the first intermediate mode position, as shown in FIG. 1, the intermediate mode door 48 is connected to the other end 121 b of the first ventilation path 121 while the other end 121 b of the first ventilation path 121 is connected to the first outlet 134.
- the second air outlet 135 is shut off.
- the third communication ventilation path 133 is opened by the third communication ventilation path door 40, the other end 122b of the second ventilation path 122 is connected to the second outlet 135.
- the intermediate mode door 48 connects the other end 121b of the first air passage 121 with the first air outlet 134 and the first air outlet 134, as shown in FIG. Connect to 2 outlets 135.
- the third communication air passage 133 is opened by the third communication air passage door 40, the other end 122 b of the second air passage 122 is connected to the other end 121 b of the first air passage 121 and the first air outlet 134.
- the first blower 14 is a centrifugal electric blower, and the fan of the first blower 14, that is, the blower impeller, is housed in the first blower housing portion 127.
- the first blower 14 blows out the air sucked from the intake portion 125 toward one end 121a of the first ventilation path 121 or one end 122a of the second ventilation path 122 in accordance with the position of the second communication ventilation path door 38.
- the second blower 16 is also a centrifugal electric blower, and the blower impeller of the second blower 16 is accommodated in the second blower accommodating portion 129.
- the second blower 16 blows out air sucked from the first communication air passage 130 or the second inside air introduction port 128 toward one end 122 a of the second air passage 122.
- the first evaporator 18 is provided in the first ventilation path 121 between one end 121 a and the other end 121 b of the first ventilation path 121, and all of the air flowing through the first ventilation path 121 passes through the first evaporator 18.
- the first air passage 121 is disposed over the entire cross section.
- the first evaporator 18 is a cooling heat exchanger that cools air by exchanging heat between the refrigerant flowing through the inside and the air flowing through the first ventilation path 121.
- the first evaporator 18 corresponds to the first heat exchanger in the present disclosure.
- the second evaporator 20 is provided in the second ventilation path 122 between one end 122 a and the other end 122 b of the second ventilation path 122, and all of the air flowing through the second ventilation path 122 passes through the second evaporator 20.
- the second air passage 122 is disposed over the entire cross section.
- the second evaporator 20 is a cooling heat exchanger that cools the air by exchanging heat between the refrigerant flowing through the second evaporator 20 and the air flowing through the second ventilation path 122.
- the second evaporator 20 corresponds to the second heat exchanger in the present disclosure.
- the first evaporator 18 and the second evaporator 20 constitute one heat exchanger as a whole, and the air passage of the one heat exchanger is divided by a partition plate, so that the air passing through the first evaporator 18 is divided. And the air passing through the second evaporator 20 are not mixed.
- the first heater core 22 is a heating heat exchanger that heats air by exchanging heat between engine cooling water, which is hot water flowing through the inside, and air passing through the first heater core 22.
- the first heater core 22 is disposed in the first ventilation path 121 between the first evaporator 18 and the other end 121 b of the first ventilation path 121.
- the first ventilation path 121 includes a first bypass ventilation path 121 c that allows air to flow between the first evaporator 18 and the other end 121 b of the first ventilation path 121 without passing through the first heater core 22.
- a first air mix door 50 is provided between the first evaporator 18 and the first heater core 22 in the first ventilation path 121.
- the first air mix door 50 adjusts the air volume passing through the first heater core 22, the air volume passing through the first bypass ventilation path 121c, and the air volume ratio according to the rotation angle. Specifically, the first air mix door 50 blocks the air flow to the first heater core 22 and flows the air from the max cool position where the entire amount of air flows to the first bypass ventilation path 121c to the first bypass ventilation path 121c. Is turned to a maximum hot position where the entire amount of air flows to the first heater core 22.
- the second heater core 24 is a heat exchanger for heating that heats the air by exchanging heat between engine coolant, which is hot water flowing through the inside, and air passing through the second heater core 24.
- the second heater core 24 is disposed in the second ventilation path 122 between the second evaporator 20 and the other end 122 b of the second ventilation path 122.
- the second ventilation path 122 includes a second bypass ventilation path 122 c that allows air to flow between the second evaporator 20 and the other end 122 b of the second ventilation path 122 without passing through the second heater core 24.
- a second air mix door 52 is provided between the second evaporator 20 and the second heater core 24 in the second ventilation path 122, and the second air mix door 52 corresponds to the rotation angle of the second air mix door 52. 2 Adjust the air volume passing through the heater core 24, the air volume passing through the second bypass ventilation path 122c, and the air volume ratio. Specifically, similarly to the first air mix door 50, the second air mix door 52 is also rotated between the max cool position and the max hot position.
- the first heater core 22 and the second heater core 24 constitute one heat exchanger as a whole, and the air passage of the one heat exchanger is divided by a partition plate, so that the air passing through the first heater core 22 is divided. And the air passing through the second heater core 24 are not mixed.
- the ECU 26 is composed of a known microcomputer including a CPU, ROM, RAM, and the like and peripheral circuits thereof, and executes various control processes according to a computer program stored in advance in the ROM.
- each door provided in the air conditioning case 12 is connected to an actuator that drives the door, and the ECU 26 outputs an operation signal for rotating the door to the actuator.
- the ECU 26 also outputs an operation signal to the compressor, the first blower 14, and the second blower 16 that circulate the refrigerant through the first evaporator 18 and the second evaporator 20.
- the ECU 26 each door whose position is switched between a two-cooling cooling mode and a once-cooling cooling mode, which will be described later, and each actuator that drives the door correspond to the air blowing mode switching device in the present disclosure.
- a plurality of sensors and switches are connected to the ECU 26.
- the plurality of switches are, for example, an indoor temperature sensor, an outdoor temperature sensor, a temperature setting switch, a blow mode switching switch, and an inside / outside air introduction switching switch.
- the indoor temperature sensor detects the inside air temperature, which is the temperature in the vehicle interior.
- the outdoor temperature sensor detects an outside air temperature that is a temperature outside the passenger compartment.
- the temperature setting switch is operated by the occupant to set the room temperature desired by the occupant.
- the blowout mode changeover switch is operated in order for the occupant to select a blowout port through which air is blown into the vehicle interior.
- the inside / outside air introduction switching switch switches between introduction of inside air or introduction of outside air.
- the ECU 26 has a detection signal from the indoor temperature sensor, a detection signal from the outdoor temperature sensor, a switch operation signal from the temperature setting switch, a switch operation signal from the blowing mode changeover switch, and a switch operation from the inside / outside air introduction changeover switch. A signal is input.
- the ECU26 performs various air-conditioning control in the air-conditioning unit 10, for example, switches the operation state of the air-conditioning unit 10 in any one of several ventilation mode.
- the plurality of air blowing modes include, for example, a twice-cooling cooling mode, a once-cooling cooling mode, and an inside / outside air two-layer mode, which will be described later.
- This two-time cooling and cooling mode corresponds to the second air blowing mode in the present disclosure.
- the ECU 26 positions each door at the position shown in FIG.
- the inside / outside air switching door 30 is positioned at the first switching position and closes both the outside air introduction port 123 and the first inside air introduction port 124.
- the ring circulation air passage door 32 opens the ring circulation air passage 126.
- the second inside air door 34 closes the second inside air introduction port 128.
- the first communication air passage door 36 opens the first communication air passage 130.
- the second communication ventilation path door 38 blocks the communication between the one end 121a of the first ventilation path 121 and the first blower housing 127, while opening the second communication ventilation path 132.
- the third communication air passage door 40 opens the third communication air passage 133.
- the first outlet door 42 opens the first outlet 134.
- the second outlet door 44 opens the second outlet 135.
- the third outlet door 46 closes the third outlet 136.
- the intermediate mode door 48 blocks between the other end 121b of the first ventilation path 121 and the second outlet 135 while the other end 121b of the first ventilation path 121 and the first outlet 134 are connected.
- FIG. 1 shows an example in which the first air mix door 50 and the second air mix door 52 are both turned to the max cool position.
- the first air mix door 50 and the second air mix door 52 are rotated so as to approach the max hot position as the target blow temperature, which is the target value of the blown temperature of the conditioned air into the passenger compartment, is higher.
- the target blow temperature which is the target value of the blown temperature of the conditioned air into the passenger compartment.
- the ECU 26 performs the cooling operation by operating the first blower 14 and the second blower 16 and causing the first evaporator 18 and the second evaporator 20 to cool the air.
- the first blower 14 and the second blower 16 exert a suction force for sucking the air inside the first ventilation path 121 and the second ventilation path 122 with the inside thereof. Exerts a discharge force to discharge air. Accordingly, air flows in the air conditioning case 12 as indicated by arrows AR11, AR12, AR13, AR14 in FIG.
- the introduced air flows from the other end 121b of the first ventilation path 121 to the one end 121a of the first ventilation path 121 and is cooled by the first evaporator 18 in the middle thereof.
- the air is sequentially drawn from one end 121a of the first air passage 121 through the circulation air passage 126 and the intake portion 125 to the first blower 14 and to the second blower 16 via the first communication air passage 130. Inhaled.
- the air drawn into the first blower 14 is blown out from the first blower 14 to one end 122a of the second ventilation path 122, and the air drawn into the second blower 16 is drawn from the second blower 16 into one end 122a of the second ventilation path 122. These airs are merged at one end 122 a of the second ventilation path 122.
- the air that has circulated to one end 122a of the second ventilation path 122 circulates from one end 122a of the second ventilation path 122 to the other end 122b of the second ventilation path 122, and is cooled by the second evaporator 20 along the way. .
- the air that has circulated to the other end 122b of the second ventilation path 122 is blown out from the other end 122b to the vehicle interior via the third communication ventilation path 133 and the second outlet 135 sequentially.
- the air introduced into the air-conditioning case 12 is cooled twice by sequentially passing through the first evaporator 18 and the second evaporator 20 and then blown into the vehicle interior.
- This single cooling / cooling mode corresponds to the first air blowing mode in the present disclosure.
- the single-cooling cooling mode is selected when a large air volume is required in the cooling operation. Therefore, when performing the cooling operation, the ECU 26 switches to the single cooling / cooling mode when, for example, the temperature in the passenger compartment is equal to or higher than a predetermined temperature threshold. This is because when the passenger compartment is very hot, it is possible to obtain passenger comfort more quickly by increasing the amount of blown air than by lowering the temperature of the air blown into the passenger compartment. Conversely, when the temperature in the passenger compartment is lower than the temperature threshold value, the cooling / cooling mode is switched twice.
- FIG. 2 is a cross-sectional view schematically showing an air-conditioning unit 10 similar to that in FIG. 1 and showing an air flow in the air-conditioning case 12 in the single-cooling cooling mode.
- the inside / outside air switching door 30 is positioned at the third switching position and closes the outside air introduction port 123 while opening the first inside air introduction port 124.
- the ring circulation air passage door 32 closes the ring circulation air passage 126.
- the second inside air door 34 closes the second inside air introduction port 128.
- the first communication air passage door 36 opens the first communication air passage 130.
- the second communication air passage door 38 communicates between the one end 121a of the first air passage 121 and the first blower accommodating portion 127, and closes the second communication air passage 132.
- the third communication air passage door 40 opens the third communication air passage 133.
- the first outlet door 42 closes the first outlet 134.
- the second outlet door 44 opens the second outlet 135.
- the third outlet door 46 closes the third outlet 136.
- the intermediate mode door 48 connects the other end 121 b of the first ventilation path 121 to the first air outlet 134 and the second air outlet 135.
- the ECU 26 performs the cooling operation by operating the first blower 14 and the second blower 16 and causing the first evaporator 18 and the second evaporator 20 to cool the air.
- the first blower 14 and the second blower 16 suck air from the intake portion 125, the first blower 14 blows the air out to the first ventilation path 121, and the second blower 16 draws the air. It blows out to the 2nd ventilation path 122. Therefore, air flows in the air conditioning case 12 as indicated by arrows AR21, AR22, AR23, AR24 in FIG.
- the air outside the air conditioning case 12 that is, the air in the passenger compartment
- the air introduced into the intake 125 is sucked into the first blower 14 and sucked into the second blower 16 through the first communication air passage 130.
- the air sucked into the first blower 14 is blown out from the first blower 14 to one end 122a of the second ventilation path 122 as indicated by an arrow AR22.
- the air sucked into the second blower 16 is blown out from the second blower 16 to one end 122a of the second ventilation path 122 as indicated by an arrow AR23.
- the air that has circulated to the one end 121a of the first ventilation path 121 circulates from the one end 121a of the first ventilation path 121 to the other end 121b of the first ventilation path 121, and in the middle thereof, by the first evaporator 18. To be cooled. Then, the cooled air is blown out from the other end 121b of the first ventilation path 121 into the vehicle interior via the second outlet 135.
- the air that has circulated to the one end 122 a of the second ventilation path 122 flows from the one end 122 a of the second ventilation path 122 to the second ventilation path 122. It distribute
- the air introduced into the air conditioning case 12 flows through the first ventilation path 121 and the second ventilation path 122 in parallel.
- the air flowing through the first ventilation path 121 is cooled once by the first evaporator 18 and then blown into the vehicle interior, and the air flowing through the second ventilation path 122 is cooled once by the second evaporator 20 and then the vehicle interior. Blown out.
- the inside / outside air two-layer mode is referred to as a two-layer mode.
- This two-layer mode is selected when the heating operation is performed.
- FIG. 3 is a cross-sectional view schematically showing an air conditioning unit 10 similar to that in FIG. 1 and showing the air flow in the air conditioning case 12 in the two-layer mode.
- the inside / outside air switching door 30 is positioned at the second switching position, and opens the outside air introduction port 123 while closing the first inside air introduction port 124.
- the ring circulation air passage door 32 closes the ring circulation air passage 126.
- the second inside air door 34 opens the second inside air introduction port 128.
- the first communication air passage door 36 closes the first communication air passage 130.
- the second communication air passage door 38 communicates between the one end 121a of the first air passage 121 and the first blower accommodating portion 127, and closes the second communication air passage 132.
- the third communication air passage door 40 closes the third communication air passage 133.
- the first outlet door 42 opens the first outlet 134.
- the second outlet door 44 closes the second outlet 135.
- the third outlet door 46 opens the third outlet 136.
- the intermediate mode door 48 connects the other end 121 b of the first ventilation path 121 to the first air outlet 134 and the second air outlet 135.
- FIG. 3 shows an example in which both the first air mix door 50 and the second air mix door 52 are rotated to the maximum hot position.
- the first air mix door 50 and the second air mix door 52 are rotated so as to be closer to the max cool position as the target blowing temperature into the passenger compartment is lower.
- the ECU 26 operates the first blower 14 and the second blower 16 and heats the first heater core 22 and the second heater core 24 to perform the heating operation.
- the first blower 14 blows out the air sucked from the outside air inlet 123 to the first ventilation path 121. Therefore, air flows in the air conditioning case 12 by the first blower 14 as indicated by arrows AR31, AR32, and AR33 in FIG.
- the second blower 16 blows out the air sucked from the second inside air inlet 128 to the second ventilation path 122. Therefore, air flows in the air conditioning case 12 by the second blower 16 as indicated by arrows AR34, AR35, AR36 in FIG.
- the air in the passenger compartment that is, the inside air
- the air in the passenger compartment is sucked into the second blower 16 from the second inside air introduction port 128.
- the air sucked into the second blower 16 is blown out from the second blower 16 to one end 122a of the second ventilation path 122 as indicated by an arrow AR35, and from the one end 122a of the second ventilation path 122 to the second ventilation path 122.
- the air in the second ventilation path 122 passes through the second evaporator 20, but the second evaporator 20 is in an off state in which the air is not cooled.
- circulated to the other end 122b of the 2nd ventilation path 122 is blown out from the other end 122b of the 2nd ventilation path 122 through the 3rd blower outlet 136 to a vehicle interior. Therefore, in the two-layer mode shown in FIG. 3, the first air outlet 134 and the third air outlet 136 serve as air outlets for blowing air into the passenger compartment.
- the air introduced into the air conditioning case 12 passes through the first evaporator 18 and the second evaporator 20 in order, and is cooled by the respective evaporators 18 and 20 and then blown out into the vehicle interior. Therefore, the air temperature can be efficiently lowered by passing air through the evaporators 18 and 20 a total of two times in the air conditioning case 12.
- the air introduced from the outside of the air conditioning case 12 to the one end 121 a of the first ventilation path 121 flows from the one end 121 a of the first ventilation path 121 to the other end 121 b of the first ventilation path 121. Blow out from the other end 121b into the vehicle compartment.
- the air introduced from the outside of the air conditioning case 12 to the one end 122a of the second ventilation path 122 flows from the one end 122a of the second ventilation path 122 to the other end 122b and from the other end 122b of the second ventilation path 122 to the vehicle interior. To blow out.
- the air introduced into the air conditioning case 12 the air introduced into the first ventilation path 121 is blown out through the first evaporator 18 into the vehicle interior without passing through the second evaporator 20, and the second ventilation path 122.
- the air introduced into the air is blown out through the second evaporator 20 without passing through the first evaporator 18 into the vehicle interior. Therefore, in the single cooling / cooling mode, the pressure loss in the air flow is reduced and the amount of air blown out into the passenger compartment as compared with the double cooling / cooling mode in which air is passed through the evaporators 18 and 20 in total in the air conditioning case 12. Is easy to increase.
- the air in the vehicle compartment is sucked into the air conditioning case 12 from the first air outlet 134 that is the defroster air outlet, and the second air outlet that is the face air outlet. Since air conditioned from 135 is blown into the passenger compartment, the air conditioned in the passenger compartment mainly flows around the upper body of the passenger. The room temperature around the upper body of the occupant greatly affects the temperature of the sensation compared to the lower body. Therefore, it is possible to improve passenger comfort by selecting the air outlet into the passenger compartment without increasing the cooling heat load.
- the air conditioning unit 10 includes the second communication air passage door 38 as a switching unit that selectively switches the air blowing destination of the first blower 14 between the second communication air passage 132 and the first air passage 121. It has. Therefore, it is not necessary to reverse the blowing direction of the first blower 14 in the twice cooling cooling mode with respect to the blowing direction of the first blower 14 in the once cooling cooling mode. Therefore, it is possible to employ a blower of a type that cannot reverse the blowing direction, for example, a centrifugal blower as the first blower 14.
- the ECU 26 when performing the cooling operation, switches to the single cooling / cooling mode when, for example, the temperature in the passenger compartment is equal to or higher than a predetermined temperature threshold. Conversely, when the temperature in the passenger compartment is lower than the temperature threshold value, the cooling / cooling mode is switched twice. Therefore, it is possible to appropriately implement the once-cooling cooling mode and the twice-cooling cooling mode according to the required amount of air flow to be blown into the vehicle interior.
- a second embodiment of the present disclosure will be described. In the present embodiment, differences from the first embodiment will be mainly described. Further, the same or equivalent parts as those of the above-described embodiment will be described by omitting or simplifying them. The same applies to third and later embodiments described later.
- FIG. 4 is a cross-sectional view schematically showing the air conditioning unit 10 of the present embodiment.
- the air conditioning unit 10 of this embodiment is different from the air conditioning unit 10 of the first embodiment in that the circulation airflow path 126 (see FIG. 1), the circulation airflow path door 32, and the second communication ventilation path. 132 and the second communication air passage door 38 are different.
- the ECU 26 switches the operation state of the air conditioning unit 10 to one of a plurality of air blowing modes.
- the plurality of air blowing modes include a twice-cooling cooling mode, a once-cooling cooling mode, and a two-layer mode similar to those in the first embodiment.
- the air flow in the air conditioning case 12 is the same as that in the first embodiment in any of the twice-cooling cooling mode, the once-cooling cooling mode, and the two-layer mode of the present embodiment.
- the air conditioning unit 10 is not provided with the ring circulation air passage 126 (see FIG. 1). Therefore, the air that has passed through the first evaporator 18 and has flowed to the one end 121a of the first ventilation path 121 in the twice-cooling cooling mode flows into the first communication ventilation path 130 through the first blower housing portion 127.
- the air blowing by the 1st air blower 14 is stopped. Accordingly, the first blower 14 and the second blower 16 are switched between operation and non-operation independently of each other, and the second blower 16 is blown by only the second blower 16 in the double cooling and cooling mode.
- the air conditioning unit 10 of the present embodiment also has the once-cooled cooling mode and the twice-cooled cooling mode as the air blowing mode, as in the first embodiment. Therefore, it is possible to obtain the effect of the two air blowing modes as in the first embodiment.
- hird embodiment a third embodiment of the present disclosure will be described. In the present embodiment, differences from the first embodiment will be mainly described.
- FIG. 5 is a cross-sectional view schematically showing the air conditioning unit 10 of the present embodiment.
- the air conditioning unit 10 of the present embodiment includes the circulating air passage door 32 (see FIG. 1), the first communication air passage door 36, the first blower 14, and the first blower housing of the first embodiment.
- the part 127, the second inside air introduction port 128, and the second inside air door 34 are not provided.
- the air conditioning unit 10 of this embodiment includes the ring circulation air passage 1261 of FIG. 5 instead of the ring circulation air passage 126 of the first embodiment, and is replaced with the second communication air passage 132 of the first embodiment. 5 and the second communication ventilation path door 381 of FIG. 5 is provided instead of the second communication ventilation path door 38 of the first embodiment.
- the second blower 16 is referred to as the blower 16 in the description of this embodiment.
- the 2nd air blower accommodating part 129 is called the air blower accommodating part 129.
- the ring circulation air passage 1261 is formed in the same portion as the first blower accommodating portion 127 (see FIG. 1) of the first embodiment in the air conditioning case 12. Similarly to the ring circulation air passage 126 of the first embodiment, the ring circulation air passage 1261 communicates with one end 121a of the first ventilation passage 121 and the intake portion 125, respectively, and connects the one end 121a and the intake portion 125. Yes.
- the second communication ventilation path 1321 is a ventilation path that forms the same space as the second communication ventilation path 132 of the first embodiment in the air conditioning case 12. However, the opening / closing direction of the second communication air passage door 381 in FIG. 5 is different from that of the second communication air passage door 38 of the first embodiment. Therefore, the second communication ventilation path 1321 is a ventilation path that connects the one end 121 a of the first ventilation path 121 to the blower housing portion 129 and the one end 122 a of the second ventilation path 122.
- the second communication ventilation path 1321 is provided with a second communication ventilation path door 381.
- the second communication air passage door 381 functions as a switching unit that switches the air blowing destination of the blower 16 by being rotated, and is positioned at one of the two communication positions. In the first communication position of the two communication positions, the second communication air passage door 381 communicates between the one end 121a of the first air passage 121 and the ring circulation air passage 1261 as shown in FIG. On the other hand, the second communication air passage 1321 is closed. That is, in the first communication position, the second communication air passage door 381 is not allowed to blow air from the blower 16 to the first air passage 121 while being able to blow air to the second air passage 122 and the first air passage 121 together. It will be in the 1st switching state which open
- the second communication air passage door 381 is formed between the one end 121a of the first air passage 121 and the ring circulation air passage 1261 as shown in FIG. While the communication between them is blocked, the second communication air passage 1321 is opened.
- the second communication ventilation path door 381 can blow air from the blower 16 to both the first ventilation path 121 and the second ventilation path 122, and at the same time, the first ventilation path 121 and the first communication ventilation. It will be in the 2nd switching state which interrupts
- the ECU 26 switches the operating state of the air conditioning unit 10 to one of a plurality of air blowing modes.
- the plurality of air blowing modes include a twice-cooling cooling mode and a once-cooling cooling mode similar to those in the first embodiment. However, the two-layer mode of the first embodiment is not provided.
- the double cooling / cooling mode of this embodiment will be described.
- the ECU 26 positions each door at the position shown in FIG. Specifically, the second communication air passage door 381 is positioned at the first communication position, and communicates between the one end 121a of the first air passage 121 and the ring circulation air passage 1261, while the second communication air passage 1321. Occlude.
- the positions of the other doors are the same as in the twice-cooling cooling mode of the first embodiment.
- the ECU 26 operates the air blower 16 and cools the air by causing the first evaporator 18 and the second evaporator 20 to cool the air.
- the air flow is the same as in FIG.
- FIG. 5 first, air in the passenger compartment is introduced from the first air outlet 134 to the other end 121 b of the first ventilation path 121.
- the introduced air flows from the other end 121b of the first ventilation path 121 to the one end 121a of the first ventilation path 121 and is cooled by the first evaporator 18 in the middle thereof.
- the air is sucked into the blower 16 from the one end 121a of the first ventilation path 121 through the ring circulation ventilation path 1261 and the first communication ventilation path 130.
- the air sucked into the blower 16 is blown out from the blower 16 to one end 122 a of the second ventilation path 122.
- the air that has circulated to one end 122a of the second ventilation path 122 circulates from one end 122a of the second ventilation path 122 to the other end 122b of the second ventilation path 122, and is cooled by the second evaporator 20 along the way. .
- the air that has circulated to the other end 122b of the second ventilation path 122 is blown out from the other end 122b to the vehicle interior via the third communication ventilation path 133 and the second outlet 135 sequentially.
- FIG. 6 is a cross-sectional view schematically showing an air-conditioning unit 10 similar to FIG. 5, and is a view showing the position of each door in the air-conditioning case 12 in the single-cooling cooling mode.
- the second communication air passage door 381 blocks communication between the one end 121a of the first air passage 121 and the ring circulation air passage 1261, while the second communication air passage 1321. Is rotated to the second communication position so as to open.
- the positions of the other doors are the same as in the single cooling / cooling mode of the first embodiment.
- the ECU 26 operates the air blower 16 and cools the air by causing the first evaporator 18 and the second evaporator 20 to cool the air.
- the air flow is the same as in FIG.
- the air sucked into the blower 16 is blown from the blower 16 to the one end 121a of the first ventilation path 121 through the second communication ventilation path 1321, and at the same time, one end 122a of the second ventilation path 122 from the blower 16. Blown out.
- the air flow from one end 121a of the first ventilation path 121 and the air flow from one end 122a of the second ventilation path 122 are the same as those in FIG.
- the cooling operation of the air conditioning unit 10 is performed in the above-described single cooling cooling mode or double cooling cooling mode, but the air conditioning unit 10 also performs the heating operation.
- the heating operation in FIG. 6, the first evaporator 18 and the second evaporator 20 are turned off, and the first air mix door 50 and the second air mix door 52 are rotated to the side of the maximum hot position.
- the air is heated by the first heater core 22 and the second heater core 24 by flowing air to the first heater core 22 and the second heater core 24.
- the air-conditioning unit 10 of the present embodiment also has the once-cooling cooling mode and the twice-cooling cooling mode as the blowing mode, similarly to the first embodiment.
- the effect can be obtained as in the first embodiment.
- the second communication air passage door 381 of the present embodiment opens and closes the circulation air passage 1261 and also opens and closes the second communication air passage 1321, the function and the second function of the circulation air passage door 32 in the first embodiment are also described. It also has the function of the double communication air passage door 38. Therefore, the structure of the air conditioning unit 10 can be simplified. (Fourth embodiment) Next, a fourth embodiment of the present disclosure will be described. In the present embodiment, differences from the first embodiment will be mainly described.
- FIG. 7 is a cross-sectional view schematically showing the air conditioning unit 10 of the present embodiment.
- the arrangement of the fans 14 and 16 in the air flow in the air conditioning case 72 is different from that of the first embodiment.
- the air conditioning case 72 shown in FIG. 7 corresponds to the air conditioning case 12 of the first embodiment, and constitutes the casing of the air conditioning unit 10.
- the air conditioning case 72 includes an upper ventilation path 721, a lower ventilation path 722, an outside air introduction port 723, a first inside air introduction port 724, an intake portion 725, a circulation circulation air passage 726, and an upper fan housing portion. 727, the second inside air introduction port 728, the lower blower accommodating portion 729, the first communication air passage 730, the third communication air passage 733, the first air outlet 734, the second air outlet 735, the third air outlet 736, and the third.
- a room air introduction port 737 is formed.
- the upper ventilation path 721 and the lower ventilation path 722 both extend so as to allow air to flow in the horizontal direction, and are formed in parallel to each other.
- the upper ventilation path 721 is disposed above the lower ventilation path 722.
- the upper ventilation path 721 is provided with the second evaporator 20 and the second heater core 24, and the lower ventilation path 722 is provided with the first evaporator 18 and the first heater core 22.
- the upper ventilation path 721 corresponds to the second ventilation path in the present disclosure
- the lower ventilation path 722 corresponds to the first ventilation path in the present disclosure.
- the upper ventilation path 721 includes an upper bypass ventilation path 721c, and the upper bypass ventilation path 721c is provided in parallel with the second heater core 24 in the same manner as the second bypass ventilation path 122c of the first embodiment. . Further, the second air mix door 52 similar to the first embodiment is provided in the upper ventilation path 721 on the other end 721 b side of the upper ventilation path 721 with respect to the second heater core 24.
- the lower ventilation passage 722 includes a lower bypass ventilation passage 722c, and the lower bypass ventilation passage 722c is provided in parallel with the first heater core 22 in the same manner as the first bypass ventilation passage 121c of the first embodiment. ing.
- the lower air passage 722 is provided with a first air mix door 50 similar to that of the first embodiment on the other end 722 b side of the lower air passage 722 with respect to the first heater core 22.
- the outside air introduction port 723 communicates with the space outside the vehicle compartment, like the outside air introduction port 123 of the first embodiment. Moreover, the 1st inside air introduction port 724 is connected with the vehicle interior similarly to the 1st inside air introduction port 124 of 1st Embodiment.
- the outside air introduction port 723 and the first inside air introduction port 724 are both connected to the intake portion 725 in the air conditioning case 72.
- the intake portion 725 is connected to one end 721 a of the upper ventilation path 721.
- an outside air door 78 is provided at the outside air introduction port 723, and the outside air introduction port 723 opens and closes by rotating.
- the first room air introduction port 724 is provided with a first room air door 80, and the first room air door 80 rotates to open and close the first room air introduction port 724.
- the second fan 16 is accommodated in the upper fan accommodating portion 727, and the first fan 14 is accommodated in the lower fan accommodating portion 729.
- the first communication air passage 730 is an air passage that connects one end 722 a of the lower air passage 722, one end 721 a of the upper air passage 721, and the intake portion 725.
- the first communication air passage 730 is provided with a first communication air passage door 82, and the first communication air passage door 730 opens and closes to open and close the first communication air passage 730.
- the other end 721 b of the upper ventilation path 721 is connected to the air suction side of the second blower 16 in the upper blower housing portion 727.
- the second inside air introduction port 728 communicates with the vehicle interior in the same manner as the second inside air introduction port 128 of the first embodiment.
- the second room air introduction port 728 is connected to one end 722 a of the lower ventilation path 722 in the air conditioning case 72.
- the second inside air introduction port 728 is provided with a second inside air door 84, and the second inside air door 84 rotates to open and close the second inside air introduction port 728.
- the second inside air introduction port 728, the outside air introduction port 723, the first inside air introduction port 724, and the intake portion 725 are respectively provided in the air conditioning case 72 at one end 721 a of the upper ventilation path 721 and one end 722 a of the lower ventilation path 722.
- An air introduction part for introducing outside air is configured.
- the ring circulation air passage 726 is an air passage that connects the other end 722 b of the lower air passage 722 and the air blowing side of the first air blower 14 in the lower air fan housing portion 729.
- An annular circulation air passage door 86 is provided between the annular circulation air passage 726 and the other end 722b of the lower ventilation passage 722, and the annular circulation air passage door 86 is positioned at one of the two reflux positions. The In the first reflux position, the ring circulation air passage door 86 opens the ring circulation air passage 726 while the other end 722b of the lower air passage 722 and the first fan in the lower fan housing portion 729, as shown in FIG. The communication with the air suction side of the blower 14 is blocked.
- the annular circulation air passage door 86 closes the annular circulation air passage 726 while the other end 722b of the lower ventilation passage 722 and the lower fan housing portion. 729, the air suction side of the first blower 14 is communicated.
- the third communication ventilation path 733 is a ventilation path that connects the air blowing side of the second blower 16 in the upper blower housing portion 727 and the air blowing side of the first blower 14 in the lower blower housing portion 729.
- the third communication ventilation path 733 is provided with a third communication ventilation path door 88, and the third communication ventilation path door 88 rotates to open and close the third communication ventilation path 733.
- the 1st blower outlet 734 is a defroster blower outlet similar to the 1st blower outlet 134 of a 1st embodiment.
- the first blower outlet 134 is connected to the air blower side of the second blower 16 in the upper blower housing portion 727 in the air conditioning case 72.
- the first air outlet 734 is provided with a first air outlet door 90, and the first air outlet door 90 opens and closes the first air outlet 734 by rotating.
- the second air outlet 735 is a face air outlet similar to the second air outlet 135 of the first embodiment.
- the second air outlet 735 is connected to the air blowing side of the second fan 16 in the upper fan housing part 727, and at the same time, on the air blowing side of the first fan 14 in the lower fan housing part 729. It is connected via a third communication air passage 733.
- the second air outlet 735 is provided with a second air outlet 91, and the second air outlet 91 opens and closes the second air outlet 735 by rotating.
- the third air outlet 736 is a foot air outlet similar to the third air outlet 136 of the first embodiment.
- the third air outlet 736 is connected to the air blowing side of the second fan 16 in the upper fan housing part 727 via the third communication air passage 733, and at the same time, in the lower fan housing part 729. It is connected to the air blowing side of the first blower 14.
- the third outlet 736 is provided with a third outlet door 92, and the third outlet door 92 opens and closes the third outlet 736 by rotating.
- the third inside air introduction port 737 communicates with the vehicle interior via a duct (not shown).
- the third inside air introduction port 737 is connected to the air suction side of the first blower 14 in the lower blower housing portion 729 in the air conditioning case 72.
- the third room air introduction port 737 is provided with a third room air door 93, and the third room air door 93 rotates to open and close the third room air introduction port 737.
- the first blower 14 sucks through the third room air introduction port 737 in accordance with the position of the ring circulation air passage door 86 and the position of the third room air door 93.
- the inside air is blown out to the other end 722b of the lower air passage 722, or the air sucked from the other end 722b of the lower air passage 722 is blown out into the vehicle interior through the second air outlet 735 or the third air outlet 736.
- the second blower 16 blows air sucked from the other end 721b of the upper ventilation path 721 into the vehicle interior through the first air outlet 734, the second air outlet 735, or the third air outlet 736.
- the ECU 26 switches the operating state of the air conditioning unit 10 to one of a plurality of air blowing modes.
- the plurality of air blowing modes include a twice-cooling cooling mode, a once-cooling cooling mode, and a two-layer mode, as in the first embodiment.
- the ECU 26 positions each door at the position shown in FIG. Specifically, the outside air door 78 closes the outside air introduction port 723.
- the first inside air door 80 closes the first inside air introduction port 724.
- the first communication air passage door 82 opens the first communication air passage 730.
- the second inside air door 84 closes the second inside air introduction port 728.
- the circulation air passage door 86 opens the circulation air passage 726 and blocks communication between the other end 722b of the lower ventilation passage 722 and the air suction side of the first blower 14 in the lower blower housing portion 729. To do.
- the third communication air passage door 88 closes the third communication air passage 733.
- the first outlet door 90 closes the first outlet 734.
- the second outlet door 91 opens the second outlet 735.
- the third outlet door 92 closes the third outlet 736.
- the third room air door 93 opens the third room air introduction port 737.
- the ECU 26 performs the cooling operation by operating the first blower 14 and the second blower 16 and causing the first evaporator 18 and the second evaporator 20 to cool the air.
- air flows in the air conditioning case 72 as indicated by arrows AR41, AR42, AR43, AR44, AR45 in FIG.
- the air in the vehicle compartment is sucked into the first blower 14 from the third inside air introduction port 737, and the other end of the lower ventilation path 722 via the ring circulation air path 726. 722b.
- the introduced air flows from the other end 722 b of the lower ventilation path 722 to the one end 722 a of the lower ventilation path 722, and is cooled by the first evaporator 18 in the middle thereof.
- the air flows from one end 722 a of the lower ventilation path 722 to one end 721 a of the upper ventilation path 721 through the first communication ventilation path 730.
- the air that has flowed to one end 721a of the upper ventilation path 721 flows from one end 721a of the upper ventilation path 721 to the other end 721b of the upper ventilation path 721, and is cooled by the second evaporator 20 in the middle thereof. .
- the air that has circulated to the other end 722b of the second ventilation path 722 is drawn into the second blower 16 from the other end 722b and blown out from the second blower 16 to the vehicle interior via the second blowout port 735.
- the air introduced into the air-conditioning case 72 is cooled twice and blown out into the vehicle compartment as in the first embodiment.
- FIG. 8 is a cross-sectional view schematically showing an air-conditioning unit 10 similar to that in FIG. 7, and is a view showing an air flow in the air-conditioning case 72 in the single-cooling cooling mode.
- the first inside air door 80 opens the first inside air introduction port 724.
- the first communication air passage door 82 closes the first communication air passage 730.
- the second inside air door 84 opens the second inside air introduction port 728.
- the circulation air passage door 86 closes the circulation air passage 726 and allows communication between the other end 722 b of the lower ventilation passage 722 and the air suction side of the first blower 14 in the lower blower housing portion 729.
- the third communication air passage door 88 opens the third communication air passage 733.
- the third room air door 93 closes the third room air introduction port 737.
- the positions of the other doors are the same as in FIG.
- the ECU 26 performs the cooling operation by operating the first blower 14 and the second blower 16 and causing the first evaporator 18 and the second evaporator 20 to cool the air.
- air is introduced into the upper ventilation path 721 from the first inside air introduction port 724, and air is introduced into the lower ventilation path 722 from the second inside air introduction port 728.
- air flows as shown by arrows AR51, AR52, AR53, AR54, and AR55 in FIG.
- air in the vehicle interior is introduced from the first inside air inlet 724 to the one end 721a of the upper ventilation path 721 through the intake portion 725 as indicated by an arrow AR51. Is done.
- the air in the passenger compartment is introduced from the second inside air introduction port 728 to the one end 722a of the lower ventilation path 722 as indicated by an arrow AR53.
- the air introduced into one end 721a of the upper ventilation path 721 flows from one end 721a of the upper ventilation path 721 to the other end 721b of the upper ventilation path 721, and is cooled by the second evaporator 20 in the middle thereof. Then, the cooled air is sucked into the second blower 16 from the other end 721b of the upper ventilation path 721 and blown out from the second blower 16 to the vehicle interior via the second blower outlet 735.
- the air that has circulated to the one end 722 a of the lower ventilation path 722 flows from one end 722 a of the lower ventilation path 722 to the other of the lower ventilation path 722. It flows to the end 722b and is cooled by the first evaporator 18 in the middle thereof. The cooled air is sucked into the first blower 14 from the other end 722 b of the lower ventilation path 722. Then, the air blown from the first blower 14 is blown into the vehicle interior via the second blower outlet 735 together with the air from the second blower 16 through the third communication air passage 733.
- the air introduced into the upper ventilation path 721 is once cooled by the second evaporator 20 and then blown out into the vehicle interior and introduced into the lower ventilation path 722.
- the air is cooled once by the first evaporator 18 and then blown out into the passenger compartment. That is, in the single cooling and cooling mode, in the first embodiment, each of the blowers 14 and 16 blows air so as to push air into each of the evaporators 18 and 20, but each of the blowers 14 and 16 of this embodiment has each of the evaporators 18. The air is sucked from 20 and blown.
- This two-layer mode is selected when the heating operation is performed.
- the ECU 26 rotates the outside air door 78 to the position where the outside air introduction port 723 is opened with respect to the position of each door shown in FIG. 8 and closes the first inside air introduction port 724, for example.
- the first inside air door 80 is rotated.
- the first outlet door 90 is rotated to a position where the first outlet 734 is opened
- the second outlet door 91 is rotated to a position where the second outlet 735 is closed
- the third outlet 736 is opened.
- the third blowout door 92 is rotated to the position
- the third communication ventilation path door 88 is rotated to a position where the third communication ventilation path 733 is closed.
- the ECU 26 rotates the second air mix door 52 so that air flows to the second heater core 24, thereby heating the air to the second heater core 24, and at the same time, air flows to the first heater core 22.
- the air is heated by the first heater core 22.
- the first evaporator 18 and the second evaporator 20 are turned off.
- the air-conditioning unit 10 of the present embodiment also has the once-cooling cooling mode and the twice-cooling cooling mode as the blowing mode, similarly to the first embodiment.
- the effect can be obtained as in the first embodiment.
- a fifth embodiment of the present disclosure will be described. In the present embodiment, differences from the above-described fourth embodiment will be mainly described.
- FIG. 9 is a cross-sectional view schematically showing the air conditioning unit 10 of the present embodiment, showing the position of each door and the air flow in the air conditioning case 72 in the double cooling and cooling mode.
- the air conditioning unit 10 of this embodiment includes an inside / outside air door 94 instead of the outside air door 78 and the first inside air door 80 of the fourth embodiment.
- the inside / outside air door 94 is rotated, thereby opening one of the outside air introduction port 723 and the first inside air introduction port 724 and closing the other. Specifically, it is positioned at one of two internal / external air positions. In the first inside / outside air position, the inside / outside air door 94 closes the outside air introduction port 723 and opens the first inside air introduction port 724 as shown in FIG.
- the outside air introduction port 723 is opened while the first inside air introduction port 724 is closed.
- the inside / outside air door 94 switches the air flow between the outside air introduction port 723 and the first inside air introduction port 724 by being rotated to the first inside / outside air position or the second inside / outside air position. Corresponds to the switching device.
- the inside / outside air door 94 is rotated to the first inside / outside air position in the twice cooling and cooling mode. In the single cooling / cooling mode, the air is rotated to the first or second inside / outside air position.
- the air conditioning unit 10 of the present embodiment includes a first communication air passage door 96 shown in FIG. 9 instead of the first communication air passage door 82 and the second inside air door 84 of the fourth embodiment.
- the first communication air passage door 96 is rotated and positioned at one of the two communication positions. In the first communication position, the first communication air passage door 96 closes the second inside air inlet 728 and opens the first communication air passage 730 as shown in FIG. Conversely, at the second communication position, the second indoor air inlet 728 is opened while the first communication air passage 730 is closed.
- the first communication air passage door 96 is rotated to the first communication position in the twice cooling and cooling mode. In the single cooling / cooling mode, it is rotated to the second communication position.
- the first inside air introduction port 724 is opened. Therefore, the first blower 14 and the second blower 16 are operated so that the air flow of the second blower 16 is larger than the air flow of the first blower 14 by a predetermined air flow difference. This is to prevent the air flowing from the first communication air passage 730 to the one end 721a of the upper air passage 721 from flowing out of the air conditioning case 72 from the first inside air introduction port 724.
- the predetermined air volume difference is, for example, that the air from the first communication air passage 730 is prevented from flowing out of the air conditioning case 72 from the first inside air introduction port 724 and the air conditioning case 72 from the first inside air introduction port 724. It is experimentally determined so that the amount of air flowing in (see arrow AR46 in FIG. 9) becomes small.
- the fan diameter of the second blower 16 may be increased or the axial length of the fan of the second fan 16 may be increased.
- a certain fan height may be increased, the fan rotation speed of the second blower 16 may be increased, and the upper ventilation path 721 may be configured so that the pressure loss of the upper ventilation path 721 in the air flow is reduced. .
- the two-layer mode is also selected as in the fourth embodiment.
- the air flow in the air conditioning case 72 is the same as that of the fourth embodiment in the single cooling cooling mode and the double cooling cooling mode. Therefore, it is possible to obtain the effect of the two air blowing modes as in the fourth embodiment.
- the number of doors provided in the air conditioning case 72 is reduced while realizing the once-cooled cooling mode, the twice-cooled cooling mode, and the two-layer mode as in the fourth embodiment. This can be reduced from the fourth embodiment. Therefore, the structure of the air conditioning unit 10 can be simplified.
- the 1st air blower 14 and the 2nd air blower 16 are operated so that the air volume of the 2nd air blower 16 becomes larger than the air volume of the 1st air blower 14. Therefore, even if the first inside air introduction port 724 is not closed, the air flowing from the first communication air passage 730 to the one end 721a of the upper air passage 721 is prevented from flowing out of the air conditioning case 72 from the first inside air introduction port 724. It is possible. (Other embodiments) (1) In each above-mentioned embodiment, although the 1st air blower 14 and the 2nd air blower 16 are centrifugal air blowers, they may be an axial flow air blower, for example.
- the first blower 14 of the second embodiment is an axial flow blower
- bidirectional air can be blown by switching the rotation direction. Therefore, in the double cooling cooling mode, the first blower 14 is set to the first ventilation. You may act
- the first blower 14 and the second blower 16 are configured as separate blowers.
- a blower that is integrally rotated by one electric motor may be used. .
- the first air mix door 50 and the second air mix door 52 adjust the blowout temperature into the vehicle interior. It is rotated between the max cool position and the max hot position. However, by adjusting the cooling capacity of the first evaporator 18 and the second evaporator 20 by fixing the first air mix door 50 and the second air mix door 52 at the max cool position, Also good.
- the first outlet 134 is an air inlet through which air is introduced into the air conditioning case 12, and the second outlet 135 is Air-conditioned air in the air-conditioning case 12 serves as an air outlet from which air is blown into the passenger compartment.
- the air inlet and the air outlet in the double cooling / cooling mode are not limited thereto.
- the third air outlet door 40 and the intermediate mode door 48 are switched from the door position of FIG. 1 and the third air outlet 136 is opened at the third air outlet 46 so that the first air outlet 134 and the second air outlet 136 are opened.
- 135 may be an air inlet
- the third outlet 136 may be an air outlet.
- the air inlet and the air outlet in the twice-cooling cooling mode are not limited as in the second to fifth embodiments.
- the air outlet into the vehicle interior is the second outlet 135, but the first to third outlets 134, 135 are provided. 136 may be used. The same applies to the second to fifth embodiments described above.
- the air that has passed through the first ventilation path 121 and the air that has passed through the second ventilation path 122 merge to form the second Although flowing into the outlet 135, they do not need to merge.
- the third communication air passage 133 is closed by the third communication air passage door 40 and the third air outlet 136 is opened by the third air outlet 46 so that the air passing through the second air passage 122 is third. You may make it blow off from the blower outlet 136 to a vehicle interior.
- the ECU 26 switches to the single cooling / cooling mode when the cooling operation is performed, for example, when the temperature in the passenger compartment is equal to or higher than a predetermined temperature threshold.
- the air blowing mode switching may be performed according to a physical value other than the temperature inside the vehicle interior.
- the ECU 26 may select the single cooling / cooling mode when the amount of air blown out into the vehicle interior is larger than that in the double cooling / cooling mode.
- the ECU 26 determines a target blown air volume of the air blown into the vehicle interior, and enters the single cooling / cooling mode when the target blown air volume is equal to or greater than a predetermined blown air volume threshold value. Switch. On the other hand, when the target blown air volume is less than the blown air volume threshold, the cooling air cooling mode is switched to twice.
- the first evaporator 18 and the second evaporator 20 are in the off state in the two-layer mode.
- one of the first evaporator 18 and the second evaporator 20 is used for dehumidification. Or both may be turned on to cool the air.
- the two-layer mode in the embodiments other than the first embodiment.
- the first evaporator 18 and the second evaporator 20 constitute one heat exchanger in which the air passage is divided by a partition plate, but each has a separate and independent heat. It may be an exchanger. The same applies to the relationship between the first heater core 22 and the second heater core 24.
- the third inside air introduction port 737 communicates with the vehicle interior.
- inside air is introduced into the third inside air introduction port 737 from around the driver's seat. It may be piped as described. If so, the airflow of air conditioned in the double cooling cooling mode can be circulated intensively around the driver's seat, thereby improving the immediate effect of cooling around the driver's seat. It is possible.
- the third inside air introduction port 737 corresponds to the air introduction port in the present disclosure.
- the third inside air introduction port 737 communicates with the vehicle interior, but may communicate with a space outside the vehicle compartment and thereby function as an outside air introduction port.
- the third inside air introduction port 737 is provided, but the third inside air introduction port 737 may be abolished.
- the third air outlet 736 is opened at the third air outlet 92 and the first blower 14 is stopped, and the third air outlet 736 is lowered from the third air outlet 736. Air in the passenger compartment is introduced into the side blower housing portion 729.
- the first blower 14 can be operated so as to circulate air toward the lower ventilation path 722.
- FIG. 10 is a diagram illustrating an example of the air flow when the heating operation is performed in the air conditioning unit 10 of FIG. 1.
- the first heater core 22 corresponds to the first heat exchanger in the present disclosure
- the second heater core 24 corresponds to the second heat exchanger in the present disclosure.
- the first evaporator 18 and the second evaporator 20 are in an off state.
- the air outlet into the passenger compartment is not the second outlet 135 but the third outlet 136, and air flows from the third outlet 136 into the passenger compartment as indicated by an arrow AR15.
- the heating operation is performed as shown in FIG. 10, the air introduced into the air conditioning case 12 is heated a total of two times by the heater cores 22 and 24 and then blown into the vehicle interior. As compared with the case where the heater core 24 is heated only once, the temperature of the air blown into the passenger compartment can be increased.
- the inside / outside air door 94 is configured so that, in the double cooling cooling mode, the inside / outside air door 94 is closed so as to close the outside air introduction port 723 and open the first inside air introduction port 724. Although it is rotated to the first inside / outside air position, it need not be limited thereto.
- the inside / outside air door 94 is preferably rotated to the first inside / outside air position of the inside / outside air door 94 in the double cooling and cooling mode. For example, while the outside air introduction port 723 is opened, the first inside air introduction port 724 is opened.
- the inside / outside air door 94 may be rotated to the second inside / outside air position so as to be closed.
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Abstract
Description
(第1実施形態)
図1は、本実施形態の車両用空調ユニット10を模式的に示した断面図である。この車両用空調ユニット10(以下、空調ユニット10という)は、車室内においてその前方部分に配置される。空調ユニット10は、例えばエンジンルームに配設されたコンプレッサおよびコンデンサ等から構成される冷凍サイクルを備えた車両用空調装置の一部を構成する。なお、図1の上下方向を示す矢印は、空調ユニット10の車両搭載状態における上下方向を示している。以下、車両搭載状態における上下方向である車両上下方向を上下方向と言い、車両上下方向と直交する方向を水平方向と言う。
(第2実施形態)
次に、本開示の第2実施形態について説明する。本実施形態では、前述の第1実施形態と異なる点を主として説明する。また、前述の実施形態と同一または均等な部分については省略または簡略化して説明する。後述の第3実施形態以降でも同様である。
(第3実施形態)
次に、本開示の第3実施形態について説明する。本実施形態では、前述の第1実施形態と異なる点を主として説明する。
(第4実施形態)
次に、本開示の第4実施形態について説明する。本実施形態では、前述の第1実施形態と異なる点を主として説明する。
(第5実施形態)
次に、本開示の第5実施形態について説明する。本実施形態では、前述の第4実施形態と異なる点を主として説明する。
(他の実施形態)
(1)上述の各実施形態において、第1送風機14および第2送風機16は遠心式の送風機であるが、例えば、軸流式の送風機であってもよい。例えば、第2実施形態の第1送風機14が軸流式の送風機であれば、回転方向の切替えにより双方向に送風可能であるので、二回冷却冷房モードにおいて、第1送風機14を第1通風路121の一端121aから第1連通通風路130へ送風するように作動させてもよい。そのようにしたとすれば、第1送風機14を停止させる場合よりも大きな送風能力を得ることができる。
Claims (13)
- 空調ケース(12、72)と、
前記空調ケース内において互いに並列に形成された第1通風路(121、722)および第2通風路(122、721)と、
前記空調ケース内に形成され、前記第1通風路の一端(121a、722a)と前記第2通風路の一端(122a、721a)とを連通させる第1連通通風路(130、730)と、
前記第1通風路に設けられその第1通風路の一端と他端(121b、722b)との間においてその第1通風路内を流れる空気を加熱または冷却する第1熱交換器(18、22)と、
前記第2通風路に設けられその第2通風路の一端と他端(122b、721b)との間においてその第2通風路内を流れる空気を加熱または冷却する第2熱交換器(20、24)と、
複数の送風モードのうちの何れかに切り替える送風モード切替装置(26、30、32、38、42、48、94、381、…)とを備え、
前記複数の送風モードは、
前記空調ケース外から前記第1通風路の一端に空気を導入しその空気を前記第1通風路の一端から他端へ流通させその第1通風路の他端から車室内へ吹き出させると共に、前記空調ケース外から前記第2通風路の一端に空気を導入しその空気を前記第2通風路の一端から他端へ流通させその第2通風路の他端から前記車室内へ吹き出させる第1送風モードと、
前記空調ケース外から前記第1通風路の他端に空気を導入しその空気を前記第1通風路の他端から一端へ流通させてから前記第1連通通風路を介して前記第2通風路の一端へ流通させ、その第2通風路の一端の空気をその第2通風路の一端から他端へ流通させその第2通風路の他端から前記車室内へ吹き出させる第2送風モードとを含む車両用空調ユニット。 - 空気を送風する第1送風機(14)と第2送風機(16)とをさらに備え、
前記空調ケース(12)は、
その空調ケース外の空気を導入するための空気導入部(123、124、125)と、前記第1送風機を収容している第1送風機収容部(127)と、
前記第2送風機を収容している第2送風機収容部(129)と、
前記第1送風機収容部と前記第2通風路(122)の一端(122a)とを連通させる第2連通通風路(132)と、
前記第1通風路(121)の一端(121a)と前記空気導入部とを連通させる環流通風路(126)とを有し、
前記第1連通通風路は、その第1連通通風路の一端において前記環流通風路を介して前記第1通風路の一端に接続されていると共に、その第1連通通風路の他端において前記第2送風機収容部を介して前記第2通風路の一端に接続されており、
前記送風モード切替装置は、
前記第1送風モードでは、前記環流通風路と前記第2連通通風路とを閉塞し、前記空調ケース外から前記空気導入部を介して導入された空気を、前記第1通風路の一端へ前記第1送風機によって送風すると共に前記第2通風路の一端へも前記第2送風機によって送風し、
前記第2送風モードでは、前記空調ケース外から前記空気導入部を介した空気導入を遮断し、前記環流通風路と前記第2連通通風路とを開放し、前記第1通風路の他端から一端へ流通してきた空気を、前記環流通風路と前記第2連通通風路とを介して前記第2通風路の一端へ前記第1送風機によって送風すると共に前記環流通風路と前記第1連通通風路とを介して前記第2通風路の一端へ前記第2送風機によって送風する請求項1に記載の車両用空調ユニット。 - 前記送風モード切替装置は、前記第1送風機の送風先を前記第1通風路と前記第2連通通風路とに択一的に切り替える切替部(38)を含んでいる請求項2に記載の車両用空調ユニット。
- 空気を送風する第1送風機(14)と第2送風機(16)とをさらに備え、
前記空調ケース(12)は、
その空調ケース外の空気を導入するための空気導入部(123、124、125)と、
前記第1送風機を収容している第1送風機収容部(127)と、
前記第2送風機を収容している第2送風機収容部(129)とを有し、
前記第1連通通風路は、その第1連通通風路の一端において前記第1送風機収容部を介して前記第1通風路の一端に接続されていると共に、その第1連通通風路の他端において前記第2送風機収容部を介して前記第2通風路の一端に接続されており、
前記送風モード切替装置は、
前記第1送風モードでは、前記空調ケース外から前記空気導入部を介して導入された空気を、前記第1通風路の一端へ前記第1送風機によって送風すると共に前記第2通風路の一端へも前記第2送風機によって送風し、
前記第2送風モードでは、前記空調ケース外から前記空気導入部を介した空気導入を遮断し、前記第1通風路の他端から一端へ流通してきた空気を、前記第1連通通風路を介して前記第2通風路の一端へ前記第1送風機と前記第2送風機との両方または前記第2送風機によって送風する請求項1に記載の車両用空調ユニット。 - 空気を送風する送風機(16)をさらに備え、
前記送風モード切替装置は、前記送風機の送風先を切り替える切替部(381)を含み、
前記空調ケース(12)は、
その空調ケース外の空気を導入するための空気導入部(123、124、125)と、
前記送風機を収容している送風機収容部(129)とを有し、
前記第1連通通風路は、その第1連通通風路の一端において前記第1通風路の一端と前記空気導入部とに接続されていると共に、その第1連通通風路の他端において前記送風機収容部を介して前記第2通風路の一端に接続され、
前記切替部は、前記送風機から前記第1通風路へは送風不能とする一方で前記第2通風路へは送風可能としそれと共に前記第1通風路と前記第1連通通風路との間を開放する第1切替状態と、前記送風機から前記第1通風路と前記第2通風路との両方へ送風可能としそれと共に前記第1通風路と前記第1連通通風路との間を遮断する第2切替状態との何れかに切り替えられ、
前記送風モード切替装置は、
前記第1送風モードでは、前記切替部を前記第2切替状態に切り替え、前記空調ケース外から前記空気導入部を介して導入された空気を前記送風機によって前記第1通風路の一端と前記第2通風路の一端との両方へ送風し、
前記第2送風モードでは、前記切替部を前記第1切替状態に切り替え、前記空調ケース外から前記空気導入部を介した空気導入を遮断し、前記第1通風路の他端から一端へ流通してきた空気を、前記第1連通通風路を介して前記第2通風路の一端へ前記送風機によって送風する請求項1に記載の車両用空調ユニット。 - 前記空調ケース(12)は、前記複数の送風モードのうちの前記第2送風モードを除く何れかの送風モードにおいて前記車室内へ空気を吹き出す空気吹出口(134)を有し、
前記送風モード切替装置は、前記第2送風モードでは、前記車室内の空気を前記空気吹出口を通して前記第1通風路の他端に導入する請求項1ないし5のいずれか1つに記載の車両用空調ユニット。 - 前記空調ケースは、デフロスタ吹出口(134)とフェイス吹出口(135)とフット吹出口(136)とを有し、
前記送風モード切替装置は、前記第2送風モードでは、前記車室内の空気を前記デフロスタ吹出口を通して前記第1通風路の他端に導入し、前記空調ケース内の空気を前記第2通風路の他端から前記フェイス吹出口または前記フット吹出口を通して前記車室内へ吹き出させる請求項1ないし5のいずれか1つに記載の車両用空調ユニット。 - 前記空調ケース(72)外から吸い込んだ空気を前記第1通風路(722)の他端(722b)へ吹き出し或いはその第1通風路の他端から吸い込んだ空気を前記車室内へ吹き出す第1送風機(14)と、
前記第2通風路(721)の他端(721b)から吸い込んだ空気を前記車室内へ吹き出す第2送風機(16)と、
前記空調ケースに形成され、前記第1通風路の一端と前記第2通風路の一端とのそれぞれに前記空調ケース外の空気を導入するための空気導入部(723、724、725、728)とをさらに備え、
前記送風モード切替装置は、
前記第1送風モードでは、前記空調ケース外から前記空気導入部を介して導入された空気を、前記第1通風路の一端から他端へと通して前記第1送風機に吸い込ませると共に前記第2通風路の一端から他端へと通して前記第2送風機に吸い込ませ、
前記第2送風モードでは、前記第1送風機に前記空調ケース外から吸い込ませた空気を前記第1通風路の他端へ吹き出させると共に、前記第2送風機に前記第2通風路の他端から吸い込ませた空気を前記車室内へ吹き出させる請求項1に記載の車両用空調ユニット。 - 前記空気導入部は、車室外に連通した外気導入口(723)と車室内に連通した内気導入口(724)とを有し、
前記送風モード切替装置は、前記外気導入口と前記内気導入口との一方を開放し他方を閉塞する導入部切替部(94)を含み、
前記送風モード切替装置は、前記第2送風モードでは、前記導入部切替部で前記外気導入口と前記内気導入口との一方を閉塞し、第2送風機16の風量を第1送風機14の風量よりも大きくする請求項8に記載の車両用空調ユニット。 - 前記空調ケースは、デフロスタ吹出口(734)と、フェイス吹出口(735)と、前記車室内の運転者座席まわりの空気を前記空調ケース内へ導入するための空気導入口(737)とを有し、
前記送風モード切替装置は、前記第2送風モードでは、前記運転者座席まわりの空気を前記空気導入口を通して前記第1送風機に吸い込ませ、前記第2送風機に前記第2通風路の他端から吸い込ませた空気を前記デフロスタ吹出口または前記フェイス吹出口を通して前記車室内へ吹き出させる請求項8または9に記載の車両用空調ユニット。 - 前記第1熱交換器および前記第2熱交換器は何れも空気を冷却する冷却用熱交換器であり、
前記送風モード切替装置は、前記車室内の温度が予め定められた温度閾値以上である場合に前記第1送風モードを選択する請求項1ないし10のいずれか1つに記載の車両用空調ユニット。 - 前記送風モード切替装置は、前記車室内の温度が前記温度閾値未満である場合に前記第2送風モードを選択する請求項11に記載の車両用空調ユニット。
- 前記送風モード切替装置は、車室内へ吹き出す空気の吹出風量を前記第2送風モード時よりも多くする場合に前記第1送風モードを選択する請求項1ないし12のいずれか1つに記載の車両用空調ユニット。
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JP6257940B2 (ja) * | 2013-07-11 | 2018-01-10 | 三菱重工オートモーティブサーマルシステムズ株式会社 | ヒートポンプ式車両用空調システムおよびその除霜方法 |
JP6318854B2 (ja) * | 2013-07-18 | 2018-05-09 | 株式会社デンソー | 車両用空調装置 |
JP6052099B2 (ja) * | 2013-08-22 | 2016-12-27 | 株式会社デンソー | 車両用シート空調装置 |
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JP6409440B2 (ja) * | 2013-11-20 | 2018-10-24 | 株式会社デンソー | 空調装置 |
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- 2014-09-01 DE DE112014004283.8T patent/DE112014004283T5/de not_active Withdrawn
- 2014-09-01 US US15/021,761 patent/US9802463B2/en not_active Expired - Fee Related
- 2014-09-01 CN CN201480040446.5A patent/CN105377599A/zh active Pending
- 2014-09-01 WO PCT/JP2014/004466 patent/WO2015040803A1/ja active Application Filing
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CN108885016A (zh) * | 2016-04-05 | 2018-11-23 | 株式会社电装 | 空调机 |
CN108885016B (zh) * | 2016-04-05 | 2020-04-17 | 株式会社电装 | 空调机 |
CN106627037A (zh) * | 2016-12-14 | 2017-05-10 | 周波 | 汽车进风换气一体机 |
Also Published As
Publication number | Publication date |
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CN105377599A (zh) | 2016-03-02 |
US20160229266A1 (en) | 2016-08-11 |
JP6015607B2 (ja) | 2016-10-26 |
JP2015058782A (ja) | 2015-03-30 |
DE112014004283T5 (de) | 2016-06-09 |
US9802463B2 (en) | 2017-10-31 |
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