WO2016140202A1 - 車両用空調ユニット - Google Patents
車両用空調ユニット Download PDFInfo
- Publication number
- WO2016140202A1 WO2016140202A1 PCT/JP2016/056123 JP2016056123W WO2016140202A1 WO 2016140202 A1 WO2016140202 A1 WO 2016140202A1 JP 2016056123 W JP2016056123 W JP 2016056123W WO 2016140202 A1 WO2016140202 A1 WO 2016140202A1
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- WIPO (PCT)
- Prior art keywords
- air
- air conditioning
- drain hole
- cooler
- conditioning case
- Prior art date
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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
- B60H1/32—Cooling devices
- B60H1/3233—Cooling devices characterised by condensed liquid drainage means
Definitions
- the present disclosure relates to a vehicle air conditioning unit that blows out temperature-controlled air into a vehicle interior.
- the air blown into the passenger compartment is adjusted by adjusting the mixing ratio of the cool air cooled by the evaporator, which is a heat exchanger for cooling, and the warm air heated by the heater core, which is a heat exchanger for heating.
- An air mix type vehicle air conditioner for adjusting the temperature of the vehicle is widely known.
- Such a vehicle air conditioner includes a so-called suction layout vehicle air conditioner in which a blower that blows air into the passenger compartment is arranged downstream of the air flow of the evaporator.
- a vehicle-type air conditioner having a suction-type layout is described in Patent Document 1, for example.
- a drain hole for draining condensed water generated in the evaporator is formed at the bottom of the air conditioning case on the downstream side of the air flow of the evaporator.
- the present disclosure is intended to improve passenger comfort.
- an air conditioning unit for a vehicle is disposed in an air conditioning case, a cooler that is disposed in the air conditioning case and cools air flowing in the air conditioning case, and an air flow downstream of the cooler.
- the air conditioning case has a drain hole forming portion that forms a drain hole for discharging the condensed water generated in the cooler to the outside of the air conditioning case.
- a cooling structure for cooling the intake air sucked into the air conditioning case from the hole is formed.
- the vehicle air conditioning unit is disposed in the air conditioning case, the cooler that cools the air that flows in the air conditioning case, and the air flow downstream of the cooler,
- a blower that blows air into the passenger compartment, and the air conditioning case includes a drain hole forming portion that forms a drain hole for discharging condensed water generated by the cooler to the outside of the air conditioning case, and the drain hole into the air conditioning case.
- a state changing unit that changes a state of the intake air to be sucked.
- FIG. 1 is a cross-sectional view showing a main configuration of a vehicle air conditioning unit 10 of the present embodiment.
- the up and down arrows DR ⁇ b> 1 indicate directions when the vehicle air conditioning unit 10 is mounted on a vehicle. That is, the double-ended arrow DR1 in FIG.
- the vehicle air conditioning unit 10 in FIG. 1 constitutes a part of a vehicle air conditioner including a compressor, a condenser, and the like disposed in an engine room of the vehicle.
- the vehicle air-conditioning unit 10 is disposed inside the instrument panel at the forefront of the vehicle interior, that is, inside the instrument panel.
- the vehicle air conditioning unit 10 includes an air conditioning case 12, an evaporator 16, a heater core 18, a first air mix door 24, a second air mix door 26, an inside / outside air switching door 28, a dust filter 29, A first blower 21 and a second blower 22 are provided.
- the vehicle air conditioning unit 10 of the present embodiment is configured with a suction layout in which the first blower 21 and the second blower 22 are arranged on the downstream side of the air flow with respect to the evaporator 16.
- the air conditioning case 12 is a resin member that forms the outer shell of the vehicle air conditioning unit 10 and has a substantially rectangular parallelepiped outer shape. In FIG. 1, the main part of the entire air conditioning case 12 is illustrated.
- the air conditioning case 12 includes a partition wall 123 that partitions an outside air introduction port 121 for introducing outside air that is air outside the vehicle compartment and an inside air introduction port 122 that introduces inside air that is air inside the vehicle interior.
- outside air that is air outside the vehicle compartment or inside air that is air inside the vehicle compartment is introduced by the first blower 21 and the second blower 22.
- an air flow passing through the first ventilation path 125 as shown by the arrow FW1 and an air flow passing through the second ventilation path 126 as shown by FW2 are generated in the air conditioning case 12.
- the air conditioning case 12 is formed with an outside air introduction port 121 for introducing outside air into the air conditioning case 12 and an inside air introduction port 122 for introducing inside air into the air conditioning case 12. All of the inlets 122 are arranged on the upstream side of the air flow with respect to the evaporator 16.
- the evaporator 16 is a cooling heat exchanger or a cooler that cools the air flowing in the air conditioning case 12.
- the evaporator 16 is accommodated in the air conditioning case 12 and is arranged so that outside air or inside air introduced into the air conditioning case 12 flows in.
- the evaporator 16 constitutes a known refrigeration cycle apparatus that circulates refrigerant together with a compressor, a condenser, and an expansion valve (not shown). The evaporator 16 cools the air passing through the evaporator 16 by evaporation of the refrigerant.
- the structure of the evaporator 16 is the same as a well-known evaporator generally used for a vehicle air conditioner.
- the evaporator 16 includes a core part 161 that performs heat exchange and cooling of air flowing in the air conditioning case 12, and a first header tank part 162 and a core part 161 provided at the upper end of the core part 161. It is comprised from the 2nd header tank part 163 provided in the lower end.
- the core part 161, the 1st header tank part 162, and the 2nd header tank part 163 are comprised with metal materials with high heat conductivity, such as aluminum.
- the core portion 161 of the evaporator 16 includes a plurality of refrigerant tubes each having a flat cross-sectional shape that communicates with the header tank portions 162 and 163, and a plurality of corrugated fins that are provided between the refrigerant tubes and formed into a wave shape. It is composed of The core portion 161 has a structure in which refrigerant tubes and corrugated fins are alternately stacked in the vehicle longitudinal direction.
- the outflow surface of the air flowing out from the core portion 161 (that is, the air outflow surface 161a) is perpendicular to the horizontal plane so that the air that has passed through the core portion 161 faces the horizontal direction. Is arranged.
- the core part 161 is divided into a plurality of fine air passages by the refrigerant tube and the corrugated fin, in the core part 161, air flows exclusively in the thickness direction of the core part 161.
- the evaporator 16 is arranged so that an air outflow surface 161a through which air that has passed through the core portion 161 flows out is parallel to the vehicle vertical direction DR1. That is, the evaporator 16 is disposed in the air conditioning case 12 so that the air that has passed through the core portion 161 faces the horizontal direction.
- the heater core 18 is a heat exchanger for heating, that is, a heater that heats the air that has flowed out of the evaporator 16 with engine cooling water that is hot water.
- the heater core 18 is disposed downstream of the evaporator 16 in the air flow in the air conditioning case 12.
- the structure of the heater core 18 is the same as a known heat exchanger for heating generally used in a vehicle air conditioner.
- the heater core 18 includes a core portion 181 and a first header tank portion 182 and a second header tank portion 183 provided at both ends of the core portion 181.
- the core portion 181 of the heater core 18 is composed of a plurality of hot water tubes each having a flat cross-sectional shape communicating with the header tank portions 182 and 183, and a plurality of corrugated fins provided between the hot water tubes and formed in a wave shape. It is configured.
- the core portion 181 has a structure in which hot water tubes and corrugated fins are alternately stacked in the vehicle longitudinal direction.
- the heater core 18 heat exchange between the high-temperature engine coolant flowing in the hot water tube and the air passing through the core portion 181 is performed, whereby the air is heated. Moreover, since the core part 181 is divided into a plurality of fine air passages by the hot water tube and the corrugated fin, in the core part 181, the air flows exclusively in the thickness direction of the core part 181. Further, since the heater core 18 is installed such that the first header tank portion 182 is positioned above the second header tank portion 183, the first header tank portion 182 is the upper end portion of the heater core 18, The two header tank portion 183 is the lower end portion of the heater core 18.
- the heater core 18 is spaced from the evaporator 16, and the air outflow surface 161a through which the air that has passed through the core portion 181 flows out is arranged so as to be parallel to the vehicle vertical direction DR1. That is, the heater core 18 is disposed in the air conditioning case 12 so that the air that has passed through the core portion 181 faces the horizontal direction.
- a first air mix door 24 and a second air mix door 26 are provided between the heater core 18 and the evaporator 16.
- the first air mix door 24 is disposed between the evaporator 16 and the first heating unit 185 located above the heater core 18.
- the first air mix door 24 is a sliding door mechanism, and is slid by an electric actuator (not shown).
- the first air mix door 24 has an air volume that passes through the first heating unit 185 and an air volume that passes through the first bypass passage 125a that bypasses the upper side of the heater core 18 in the air conditioning case 12 according to the slide position. Adjust the air volume ratio.
- the first bypass passage 125 a is disposed above the heater core 18.
- the first air mix door 24 is moved from the max cool position to the max hot position.
- the first air mix door 24 blocks the air flow to the first heating unit 185 and allows the entire amount of air to flow to the first bypass passage 125a at the max cool position.
- the first air mix door 24 blocks the air flow to the first bypass passage 125a and allows the entire amount of air to flow to the first heating unit 185 at the maximum hot position.
- the first air mix door 24 at the max cool position is illustrated by a solid line
- the first air mix door 24 at the max hot position is illustrated by a dotted line.
- the warm air passing through the first heating unit 185 of the heater core 18 and the cool air passing through the first bypass passage 125a are mixed and introduced into the vehicle interior mainly as indicated by an arrow FW1. Therefore, the temperature of the air flowing downstream of the heater core 18 is adjusted according to the slide position of the first air mix door 24 and blown out into the passenger compartment.
- the second air mix door 26 is disposed between the evaporator 16 and the second heating unit 186 located below the heater core 18.
- the second air mix door 26 is a sliding door mechanism similar to the first air mix door 24, and is slid by an electric actuator (not shown).
- the second air mix door 26 has an air volume that passes through the second heating unit 186 and an air volume that passes through the second bypass passage 126a that bypasses the lower side of the heater core 18 in the air conditioning case 12 according to the slide position. Adjust the air volume ratio.
- the second bypass passage 126 a is disposed below the heater core 18.
- the second air mix door 26 is moved from the max cool position to the max hot position.
- the second air mix door 26 blocks the air flow to the second heating unit 186 and allows the entire amount of air to flow to the second bypass passage 126a at the max cool position.
- the second air mix door 26 blocks the air flow to the second bypass passage 126a and allows the entire amount of air to flow to the second heating unit 186 at the maximum hot position.
- the second air mix door 26 at the max cool position is illustrated by a solid line
- the second air mix door 26 at the max hot position is illustrated by a dotted line.
- the warm air passing through the second heating unit 186 of the heater core 18 and the cool air passing through the second bypass passage 126a are mixed and introduced into the vehicle interior mainly as indicated by an arrow FW2. Accordingly, the air flowing through the second ventilation path 126 is temperature-controlled according to the slide position of the second air mix door 26 and blown into the vehicle interior.
- the air conditioning case 12 is provided with a plurality of air outlets (not shown) that blow out the conditioned air adjusted in accordance with the slide positions of the first air mix door 24 and the second air mix door 26.
- the plurality of air outlets are, for example, a face outlet that blows conditioned air toward the upper body of an occupant in the passenger compartment, a foot outlet that blows conditioned air toward the feet of the occupant, and an inner surface of the vehicle front window glass. It is a defroster outlet that blows out conditioned air.
- the conditioned air conditioned air is blown out into the passenger compartment through one of a plurality of air outlets.
- the air conditioning case 12 is provided with a first blower 21 and a second blower 22.
- the first blower 21 and the second blower 22 are centrifugal blowers that blow the air introduced into the inside air introduction port 122 or the outside air introduction port 121.
- the 1st air blower 21 is arrange
- the first blower 21 blows air from the face blower outlet and the foot blower outlet into the vehicle interior.
- the 2nd air blower 22 is arrange
- the second blower 22 blows air from the foot outlet into the passenger compartment.
- the bottom surface 127 of the air conditioning case 12 is provided with a drain hole 127a for discharging the condensed water Wcd generated by the evaporator 16 to the outside of the passenger compartment, and a drain hole forming part for forming the drain hole.
- the drain hole 127 a in the present embodiment is provided in the bottom surface 127 of the air conditioning case 12 on the upstream side of the air flow of the evaporator 16.
- the air conditioning case 12 supports a communication path 128 that communicates the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16, and a bottom surface portion 163 a that constitutes the bottom surface portion of the evaporator 16. And a support portion 129.
- the bottom surface portion 163 a of the evaporator 16 is the bottom surface of the second header tank portion 163 of the evaporator 16.
- the communication path 128 that communicates the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16 is formed in the gap between the bottom surface 127 of the air conditioning case 12 and the bottom surface portion 163a of the evaporator 16. Is formed.
- the air pressure of the first blower 21 and the second blower 22 causes the inside of the air conditioning case 12 through the outside air inlet 121 or the inside air inlet 122. Air is introduced into the.
- the air introduced into the air conditioning case 12 passes through the dust filter 29 and the evaporator 16, and is cooled by exchanging heat with the evaporator 16.
- the condensed water Wcd generated by the evaporator 16 falls down to the bottom surface 127 of the air conditioning case 12 mainly on the downstream side of the air flow of the evaporator 16, and then reaches the drain hole 127a through the communication path 128.
- a part of the condensed water Wcd generated by the evaporator 16 reaches the drain hole 127a after being appropriately lowered to the bottom surface 127 of the air conditioning case 12 on the upstream side of the air flow of the evaporator 16.
- the condensed water Wcd that has reached the drain hole 127a is discharged from the drain hole 127a to the outside of the passenger compartment.
- the outside air outside the passenger compartment is sucked into the air conditioning case 12 through the drain hole 127a by the blowing pressure of the first blower 21 and the second blower 22. .
- the intake air that has passed through the core part 161 of the evaporator 16 is cooled by exchanging heat with the core part 161, and the intake air that has passed through the communication path 128 has a relatively high temperature passing through the communication path 128. It is cooled by exchanging heat with the low condensed water Wcd.
- the evaporator 16 has an action of reducing malodors and smoke contained in the air passing through the core part 161. That is, malodor and smoke contained in the air passing through the core portion 161 are absorbed by the condensed water Wcd, and the air flowing out from the core portion 161 is that in which the malodor and smoke are absorbed by the condensed water Wcd. Further, the intake air passing through the communication path 128 is also the one in which malodor, smoke, etc. are absorbed by the condensed water Wcd.
- the air that has flowed out of the core portion 161 and the air that has passed through the communication path 128 are temperature-controlled according to the slide positions of the first air mix door 24 and the second air mix door 26, It is introduced into the passenger compartment through the outlet, the defroster outlet and the foot outlet.
- the air conditioning case 12 has the drain hole 127a for discharging the condensed water Wcd generated in the evaporator 16 to the outside of the air conditioning case 12.
- the vehicle air-conditioning unit is formed with a cooling structure in which the intake air sucked into the air-conditioning case 12 from the drain hole 127a is cooled before being blown into the passenger compartment, so that the comfort of the passenger is improved. be able to.
- the drain hole 127 a is arranged on the upstream side of the air flow from the evaporator 16. Then, at least a part of the intake air sucked into the air conditioning case 12 from the drain hole 127a passes through the core portion 161 of the evaporator 16 and is cooled by exchanging heat with the core portion 161 so as to be cooled. And the evaporator 16 is comprised. Therefore, for example, as in the apparatus described in Patent Document 1, the cooling capacity can be improved compared to the case where the intake air is introduced into the vehicle interior without exchanging heat with the evaporator 16, and the occupant Comfort can be improved.
- the air conditioning case 12 includes a communication path 128 that communicates the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16, a support portion 129 that supports the bottom surface of the evaporator 16, have.
- the condensed water Wcd on the downstream side of the air flow of the evaporator 16 passes through the communication path 128 and reaches the drain hole, and at least a part of the intake air passes through the communication path 128 and flows in the air flow of the evaporator 16. When it reaches the downstream side, it is cooled by exchanging heat with the condensed water Wcd. Therefore, the cooling capacity can be further improved.
- the vehicular air conditioning unit 10 is configured so that most of the intake air sucked into the air conditioning case 12 passes through the core portion 161 of the evaporator 16. Moreover, the evaporator 16 has the effect
- FIG. 3 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- a drain hole 127 a is formed in the bottom surface 127 of the air conditioning case 12 on the upstream side of the air flow of the evaporator 16.
- a drain hole 127 a is formed in the bottom surface 127 of the air conditioning case 12 on the downstream side of the air flow of the evaporator 16.
- the air conditioning case 12 is formed with a communication path 128 that connects the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16. Yes.
- the one corresponding to the communication path 128 is not formed in the air conditioning case 12.
- the vehicle air conditioning unit 10 of the present embodiment has a metal fin as a heat radiating member that promotes heat exchange between the intake air sucked into the air conditioning case 12 from the drain hole 127 a and the condensed water Wcd. 30 is provided in the drain hole 127a.
- the metal fin 30 corresponds to a state changing unit that changes the state of the intake air sucked into the air conditioning case 12 from the drain hole 127a.
- the metal fin 30 is made of a metal material having a high thermal conductivity such as aluminum.
- the metal fin 30 has a shape provided with irregularities so as to increase the surface area.
- the condensed water Wcd generated by the evaporator 16 reaches the drain hole 127a after being appropriately lowered to the bottom surface 127 of the air conditioning case 12 on the downstream side of the air flow of the evaporator 16, and is provided inside the drain hole 127a. It adheres to the metal fin 30.
- the metal fin 30 promotes heat exchange between the intake air sucked into the air conditioning case 12 from the drain hole 127a and the condensed water Wcd, and the intake air is efficiently cooled and sucked into the air conditioning case 12. .
- the heat exchange between the intake air sucked into the air conditioning case 12 from the drain hole 127a and the condensed water Wcd is promoted by the metal fin 30, and the state of the intake air sucked into the air conditioning case 12 from the drain hole 127a. Changes. Specifically, the intake air sucked into the air conditioning case 12 from the drain hole 127a is cooled.
- the vehicle air conditioning unit 10 includes the state changing unit that changes the state of the intake air sucked into the air conditioning case 12 from the drain hole 127a in the air conditioning case 12, so that the comfort of the passengers It is possible to improve the performance.
- the air conditioning case 12 includes the metal fin 30 that promotes heat exchange between the intake air sucked into the air conditioning case 12 from the drain hole 127a and the condensed water Wcd as a state change portion. This facilitates heat exchange between the intake air and the condensed water Wcd. Since the intake air cooled to a lower temperature is introduced into the passenger compartment by the metal fins 30, the comfort of the passenger can be improved.
- the intake air sucked into the air conditioning case 12 from the drain hole 127a is cooled by the metal fins 30.
- the other structure of this embodiment is the same as 1st Embodiment.
- FIG. 5 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- a support portion 129 is formed in the air conditioning case 12.
- the support portion 129 prevents the intake air passing through the communication path 128 from directly contacting the bottom surface portion 163 a of the evaporator 16. Accordingly, in the first embodiment, the intake air passing through the communication path 128 is not in direct contact with the bottom surface portion 163a of the evaporator 16.
- an opening 129 a is formed in the support portion 129 that supports the bottom surface portion 163 a constituting the bottom surface portion of the evaporator 16.
- the air conditioning case 12 of the present embodiment is configured such that the intake air passing through the communication path 128 is in direct contact with the bottom surface portion 163a of the evaporator 16 through the opening 129a.
- the intake air sucked into the air conditioning case 12 through the drain hole 127a is configured to come into direct contact with the bottom surface portion 163a of the evaporator 16, and therefore, the intake air passing through the communication path 128 is taken into the evaporator 16. It is cooled by heat exchange with the bottom surface portion 163a. Further, the intake air passing through the communication path 128 is also cooled by heat exchange with the condensed water Wcd passing through the communication path 128.
- the intake air passing through the communication path 128 is configured to be cooled by exchanging heat with the bottom surface portion 163a of the evaporator 16, it is further compared with the vehicle air conditioning unit 10 of the first embodiment. It is possible to improve the cooling capacity.
- FIG. 6 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- the air conditioning case 12 of the first embodiment has a communication path 128 that communicates the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16.
- the vehicle air-conditioning unit 10 of the present embodiment is further different from the first embodiment in that a water absorbing sponge 40 having excellent water absorption is provided in the communication path 128.
- the condensed water Wcd generated by the evaporator 16 is absorbed by the water-absorbing sponge 40 disposed in the communication path 128 after being appropriately lowered to the bottom surface 127 of the air conditioning case 12 on the downstream side of the air flow of the evaporator 16. Then, the condensed water Wcd that can no longer be absorbed by the water absorbing sponge 40 is discharged from the drain hole 127a to the outside of the passenger compartment.
- the intake air sucked into the air conditioning case 12 from the drain hole 127a hardly passes through the communication passage 128 side where the water absorbing sponge 40 is disposed, and almost all of the intake air passes through the core portion 161 of the evaporator 16. Therefore, compared with the case where the water absorbing sponge 40 is not disposed in the communication path 128, the cooling capacity of the intake air can be improved.
- FIG. 7 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- a drain hole 127 a is formed in the bottom surface 127 of the air conditioning case 12 on the upstream side of the air flow of the evaporator 16.
- a drain hole 127 a is formed in the bottom surface 127 of the air conditioning case 12 in the downward direction of the evaporator 16. More specifically, the position of the drain hole 127 a is directly below the evaporator 16.
- the air conditioning case 12 of the vehicle air conditioning unit 10 of the first embodiment is formed with a communication path 128 that communicates the space on the downstream side of the air flow of the evaporator 16 and the space on the upstream side of the air flow of the evaporator 16.
- the air flow downstream of the evaporator 16 is located in the gap between the bottom surface 127 of the air conditioning case 12 and the bottom surface portion 163a of the evaporator 16.
- a communication path 128 that connects the space and the space in which the drain hole 127a is formed is formed.
- the bottom surface 127 of the air conditioning case 12 and the bottom surface portion 163a on the upstream side of the air flow of the evaporator 16 are in contact with each other.
- the space where the drain hole 127a is formed is sealed.
- a portion of the bottom surface 127 of the air conditioning case 12 that contacts the bottom surface portion 163a on the upstream side of the air flow of the evaporator 16 corresponds to the support portion.
- the space downstream of the air flow in the evaporator 16 and the space in which the drain hole 127a is formed are connected between the bottom surface 127 of the air conditioning case 12 and the bottom surface portion 163a of the evaporator 16 (gap). Since the passage 128 is formed, the intake air sucked into the air conditioning case 12 through the drain hole 127a is not only condensed water passing through the communication passage 128, but also by heat exchange with the bottom surface portion 163a of the evaporator 16. To be cooled.
- the space between the upstream side of the air flow of the evaporator 16 and the space where the drain hole 127a is formed are sealed, so the inside air inlet 122 or the outside air inlet All of the air introduced into the air conditioning case 12 from 121 passes through the core portion 161 of the evaporator 16. For this reason, compared with the case where the space between the air flow upstream side of the evaporator 16 and the space in which the drain hole 127a is formed is not sealed, the cooling capacity can be further improved.
- the drain hole 127a is provided on the bottom surface 127 of the air conditioning case 12 in the downward direction of the evaporator 16.
- the air conditioning case 12 communicates with a space in which the air flow downstream side of the evaporator 16 and the space in which the drain hole 127 a is formed between the bottom surface 127 of the air conditioning case 12 and the bottom surface portion 163 a of the evaporator 16. 128 is formed.
- the condensed water on the downstream side of the air flow of the evaporator 16 passes through the communication path 128 and reaches the drain hole 127a.
- At least a portion of the intake air passes through the communication path 128 and reaches the downstream side of the air flow of the evaporator 16, and is cooled by exchanging heat with the condensed water and the bottom surface portion 163 a of the evaporator 16.
- FIG. 8 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- the evaporator 16 is arrange
- the evaporator 16 of the present embodiment is disposed in the air conditioning case 12 so that the air that has passed through the core portion 161 is inclined so as to face obliquely downward.
- the evaporator 16 is disposed so as to be inclined so that the air that has passed through the core portion 161 is directed obliquely downward. Therefore, as in the first embodiment, compared to the case where the evaporator 16 is arranged so that the air that has passed through the core portion 161 faces the horizontal direction, more condensed water Wcd is supplied to the air flow of the evaporator 16. On the downstream side, the air conditioning case 12 can be appropriately lowered to the bottom surface 127. Since a large amount of condensed water Wcd passes through the communication path 128, the intake air passing through the communication path 128 can be cooled more effectively.
- FIG. 9 is a cross-sectional view showing the main configuration of the vehicle air conditioning unit 10 of the present embodiment.
- the evaporator 16 is arrange
- the evaporator 16 of the present embodiment is disposed in an inclined manner in the air conditioning case 12 so that the air that has passed through the core portion 161 faces obliquely upward.
- the evaporator 16 is disposed so as to be inclined so that the air that has passed through the core portion 161 is directed obliquely upward. Therefore, as in the first embodiment, more condensed water Wcd flows in the air flow in the evaporator 16 as compared with the case where the evaporator 16 is arranged so that the air that has passed through the core portion 161 faces the horizontal direction. It can be made to fall appropriately on the bottom surface 127 of the air conditioning case 12 on the upstream side.
- the condensed water Wcd that has fallen appropriately on the bottom surface 127 of the air conditioning case 12 on the upstream side of the air flow of the evaporator 16 reaches a drain hole 127 a formed on the upstream side of the air flow of the evaporator 16. Therefore, the passage area of the communication path 128 can be reduced, or the communication path 128 can be eliminated.
- the inclination of the evaporator 16 as in the present embodiment is applicable not only to the first embodiment but also to the second to sixth embodiments and the ninth to eleventh embodiments.
- FIG. 10 is an enlarged view of part C of FIG. 3 in the vehicle air conditioning unit 10 according to the present embodiment.
- the vehicle air conditioning unit 10 according to the second embodiment includes the metal fins 30 inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- the cold storage material 31 is housed inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- the condensed water Wcd can be discharged out of the passenger compartment through the gap of the drain hole 127a.
- the cool storage material 31 absorbs the cold air of the condensed water Wcd. For example, even when the temperature of the outside air outside the passenger compartment is high, the air is sucked into the air conditioning case 12 from the drain hole 127a. The intake air is cooled by the heat exchange between the intake air and the cold storage material 31, and it is possible to prevent the cooling capacity from being lowered.
- the inclination of the evaporator 16 as in the present embodiment is applicable not only to the first embodiment but also to the second to sixth embodiments and the ninth to eleventh embodiments.
- FIG. 11 is an enlarged view of a portion C in FIG. 3 in the vehicle air conditioning unit 10 according to the present embodiment.
- the vehicle air conditioning unit 10 according to the second embodiment includes the metal fins 30 inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- the air freshener 32, the sterilizing agent 33, and the deodorizing agent 34 are housed in the drain hole 127a as a state changing unit that changes the state of the intake air. Yes.
- the condensed water Wcd can be discharged from the gap of the drain hole 127a to the outside of the vehicle compartment.
- the fragrance 32 is a scent generating part that includes a scent component in the intake air.
- the disinfectant 33 is a disinfecting unit that disinfects (for example, sterilizes and disinfects) bacteria and viruses contained in the intake air.
- the deodorizing agent 34 is a deodorizing unit that deodorizes the odor contained in the intake air.
- the fragrance 32, the disinfectant 33, and the deodorizer 34 are respectively stored in containers (not shown).
- the state of the intake air is changed by the fragrance 32 stored in the drain hole 127a. That is, since the scent component is included in the intake air sucked into the air conditioning case 12 from the drain hole 127a by the fragrance 32, the comfort of the passenger can be improved.
- the state of the intake air changes due to the disinfectant 33 housed in the drain hole 127a. That is, the bacteria and viruses contained in the intake air are sterilized by the sterilizing agent 33, and the comfort of the passenger can be improved.
- the state of the intake air is changed by the deodorizer 34 stored in the drain hole 127a. That is, since the odor contained in the intake air sucked into the air conditioning case 12 from the drain hole 127a by the deodorizer 34 is deodorized, it is possible to improve passenger comfort.
- the fragrance 32, the sterilizing agent 33, and the deodorizing agent 34 are housed in the drain hole 127a.
- at least one of the fragrance 32, the sterilizing agent 33, and the deodorizing agent 34 is used. You may make it accommodate.
- FIG. 12 is an enlarged view of part C of FIG. 3 in the vehicle air conditioning unit 10 according to the present embodiment.
- the vehicle air conditioning unit 10 according to the second embodiment includes the metal fins 30 inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- the electric heater 35 is housed inside the drain hole 127a as a state changing portion that changes the state of the intake air. Even when the electric heater 35 is housed inside the drain hole 127a, the condensed water Wcd can be discharged out of the passenger compartment through the gap of the drain hole 127a.
- the electric heater 35 has a heating part (not shown) that generates heat when energized.
- the electric heater 35 is a heating unit that heats the intake air. For example, when the outside air temperature is low, the electric heater 35 functions as an auxiliary heater that heats the intake air sucked into the air conditioning case 12 from the drain hole 127a.
- the state of the intake air is changed by the electric heater 35 housed in the drain hole 127a. That is, since the intake air sucked into the air conditioning case 12 from the drain hole 127a is heated by the electric heater 35, the heating capacity can be improved. Further, when the outside air temperature is low, it is possible to prevent the condensed water Wcd adhering to the drain hole 127a from being frozen and closing the drain hole 127a.
- FIG. 13 is an enlarged view of part C of FIG. 3 in the vehicle air conditioning unit 10 according to the present embodiment.
- the vehicle air conditioning unit 10 according to the second embodiment includes the metal fins 30 inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- a circuit board 36 having a heat absorbing portion of a Peltier element is housed inside the drain hole 127a as a state changing portion that changes the state of the intake air.
- the circuit board 36 having the heat absorbing portion of the Peltier element is a cooling portion that cools the intake air. Even when the electric heater 35 is housed inside the drain hole 127a, the condensed water Wcd can be discharged out of the passenger compartment through the gap of the drain hole 127a.
- the state of the intake air is changed by the circuit board 36 having the heat absorbing portion of the Peltier element housed in the drain hole 127a. That is, since the intake air sucked into the air conditioning case 12 from the drain hole 127a is cooled by the heat absorbing portion of the Peltier element mounted on the circuit board 36, the cooling capacity can be improved.
- FIG. 14 is an enlarged view of part C of FIG. 3 in the vehicle air conditioning unit 10 according to the present embodiment.
- the vehicle air conditioning unit 10 according to the second embodiment includes the metal fins 30 inside the drain hole 127a as a state changing unit that changes the state of the intake air.
- a dustproof filter 37 is housed in the drain hole 127a as a state changing unit that changes the state of the intake air.
- the dust filter 37 is a foreign matter removing unit that removes foreign matter from the intake air. Even when the dust filter 37 is housed inside the drain hole 127a, the condensed water Wcd can be discharged out of the passenger compartment through the gap of the drain hole 127a.
- the state of the intake air is changed by the dustproof filter 37 housed in the drain hole 127a. That is, foreign matter such as dust contained in the intake air sucked into the air conditioning case 12 from the drain hole 127a is removed by the dustproof filter 37, so that passenger comfort can be improved.
- the circuit board having the metal fin 30, the cold storage material 31, the fragrance 32, the sterilizing agent 33 and the deodorizing agent 34, the electric heater 35, and the Peltier element inside the drain hole 127a. 36, a dust filter 37 is provided.
- at least one of the communication path 128, the drain hole 127a, and the vicinity of the drain hole 127a formed in the air conditioning case 12 of the vehicle air conditioning unit 10 shown in each of the first to twelfth embodiments is provided with a metal. You may make it provide the fin 30, the cool storage material 31, the fragrance
- the drain hole 127a is provided on the downstream side of the air flow from the dust filter 29, but the drain hole 127a is provided on the upstream side of the dust filter 29.
- the first, third, fourth, sixth, and seventh embodiments may be modified to provide the above.
- the communication path 128 may be extended from the air flow downstream side of the evaporator 16 to the drain hole 127a located on the air flow upstream side of the dust filter 29.
- the air conditioning case 12 is divided into two upper and lower spaces, the outside air flowing through the upper space is introduced into the vehicle interior through the face outlet and the defroster outlet, and the inside air flowing through the lower space passes through the foot outlet.
- the present disclosure can also be applied to the vehicle air conditioning unit 10 that can be set to the two-layer flow mode configured to be introduced into the vehicle interior.
- the drain hole 127a can be formed on the inside air layer side (lower space side). In such a configuration, in any of the bi-level mode, the foot mode, and the Hood differential mode, the air that has been sucked into the air conditioning case 12 from the drain hole 127a is introduced into the vehicle interior through the foot outlet. Therefore, it is possible to reduce occupant discomfort due to bad odor or smoke contained in the outside air.
- only the heat absorbing portion of the heat absorbing portion and the heat generating portion of the Peltier element is arranged inside the drain hole 127a.
- only the heat generating portion of the heat absorbing portion and the heat generating portion of the Peltier element may be disposed inside the drain hole 127a.
- the state of the intake air changes due to the heat generating part of the Peltier element. That is, since the intake air sucked into the air conditioning case 12 from the drain hole 127a is heated by the heat generating portion of the Peltier element, the heating capacity can be improved.
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Abstract
Description
本開示の第1実施形態に係る車両用空調ユニット10について図1、図2を参照して説明する。図1は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。図1において上下の各矢印DR1は、車両用空調ユニット10が車両に搭載された車両搭載状態での向きを示す。すなわち、図1の両端矢印DR1は車両上下を示している。
本開示の第2実施形態に係る車両用空調ユニット10について図3~図4を参照して説明する。図3は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第3実施形態に係る車両用空調ユニット10について図5を参照して説明する。図5は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第4実施形態に係る車両用空調ユニット10について図6を参照して説明する。図6は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第5実施形態に係る車両用空調ユニット10について図7を参照して説明する。図7は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第6実施形態に係る車両用空調ユニット10について図8を参照して説明する。図8は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第7実施形態に係る車両用空調ユニット10について図9を参照して説明する。図9は、本実施形態の車両用空調ユニット10の主要な構成を示す断面図である。
本開示の第8実施形態に係る車両用空調ユニット10について図10を参照して説明する。図10は、本実施形態に係る車両用空調ユニット10における図3のC部拡大図である。上記第2実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に金属フィン30を備えている。これに対し、本実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に蓄冷材31が収納されている。
本開示の第9実施形態に係る車両用空調ユニット10について図11を参照して説明する。図11は、本実施形態に係る車両用空調ユニット10における図3のC部拡大図である。上記第2実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に金属フィン30を備えている。これに対し、本実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に芳香剤32、除菌剤33および脱臭剤34が収納されている。
本開示の第10実施形態に係る車両用空調ユニット10について図12を参照して説明する。図12は、本実施形態に係る車両用空調ユニット10における図3のC部拡大図である。上記第2実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に金属フィン30を備えている。これに対し、本実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に電気ヒータ35が収納されている。なお、ドレン穴127aの内部に電気ヒータ35が収納された状態でも、ドレン穴127aの隙間から車室外へ凝縮水Wcdが排出可能となっている。
本開示の第11実施形態に係る車両用空調ユニット10について図13を参照して説明する。図13は、本実施形態に係る車両用空調ユニット10における図3のC部拡大図である。上記第2実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に金属フィン30を備えている。これに対し、本実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部にペルチェ素子の吸熱部を有する回路基板36が収納されている。ペルチェ素子の吸熱部を有する回路基板36は、吸入空気を冷却する冷却部である。なお、ドレン穴127aの内部に電気ヒータ35が収納された状態でも、ドレン穴127aの隙間から車室外へ凝縮水Wcdが排出可能となっている。
本開示の第12実施形態に係る車両用空調ユニット10について図14を参照して説明する。図14は、本実施形態に係る車両用空調ユニット10における図3のC部拡大図である。上記第2実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に金属フィン30を備えている。これに対し、本実施形態に係る車両用空調ユニット10は、吸入空気の状態を変化させる状態変化部として、ドレン穴127aの内部に防塵フィルタ37が収納されている。防塵フィルタ37は、吸入空気から異物を除去する異物除去部である。なお、ドレン穴127aの内部に防塵フィルタ37が収納された状態でも、ドレン穴127aの隙間から車室外へ凝縮水Wcdが排出可能となっている。
上記第2、第8~第12実施形態では、ドレン穴127aの内部に金属フィン30、蓄冷材31、芳香剤32、除菌剤33および脱臭剤34、電気ヒータ35、ペルチェ素子を有する回路基板36、防塵フィルタ37が備えられる。しかし、例えば、上記第1~第12実施形態の各々に示した車両用空調ユニット10の空調ケース12に形成された連通路128、ドレン穴127aおよびドレン穴127aの近傍の少なくとも1つに、金属フィン30、蓄冷材31、芳香剤32、除菌剤33および脱臭剤34、電気ヒータ35、ペルチェ素子を有する回路基板36、防塵フィルタ37を備えるようにしてもよい。
Claims (14)
- 車両用空調ユニットであって、
空調ケース(12)と、
前記空調ケース内に配置されて、前記空調ケース内を流れる空気を冷却する冷却器(16)と、
前記冷却器の空気流れ下流側に配置されて、車室内へ前記空気を送風する送風機(21、22)と、を備え、
前記空調ケースは、前記冷却器で生じた凝縮水を前記空調ケース外へ排出するドレン穴(127a)を形成するドレン穴形成部を有しており、
前記ドレン穴から前記空調ケース内に吸入される吸入空気が冷却される冷却構造が形成されている車両用空調ユニット。 - 前記冷却器は、前記空調ケース内を流れる空気を熱交換して冷却するコア部(161)と、前記冷却器の底面部分を構成する底面部(163a)とを有し、
前記冷却構造は、前記吸入空気が前記コア部、前記底面部および前記凝縮水の少なくとも1つと熱交換して冷却される構造を含む請求項1に記載の車両用空調ユニット。 - 前記ドレン穴は、前記冷却器より前記空気流れ上流側に配置され、
前記冷却構造は、前記吸入空気の少なくとも一部が、前記冷却器の前記コア部を通過し、該コア部と熱交換して冷却される構造を含む請求項2に記載の車両用空調ユニット。 - 前記空調ケースは、前記冷却器の空気流れ下流側の空間と前記冷却器の空気流れ上流側の空間を連通する連通路(128)を有し、
前記冷却器の空気流れ下流側の凝縮水は、前記連通路を通過して前記ドレン穴へ到達し、
前記冷却構造は、前記吸入空気の少なくとも一部が前記連通路を通過して前記冷却器の空気流れ下流側へ到達する際に前記凝縮水と熱交換して冷却される構造を含む請求項3に記載の車両用空調ユニット。 - 前記ドレン穴は、前記冷却器の下方向の前記空調ケースの底面(127)に設けられており、
前記空調ケースの底面と前記冷却器の底面部(163a)との間に前記冷却器の空気流れ下流側の空間と前記ドレン穴が形成された空間を連通する連通路(128)が形成されており、
前記冷却器の空気流れ下流側の凝縮水は、前記連通路を通過して前記ドレン穴へ到達し、
前記冷却構造は、前記吸入空気の少なくとも一部が、前記連通路を通過して前記冷却器の空気流れ下流側へ到達する際に前記凝縮水と熱交換して冷却される構造を含む請求項2に記載の車両用空調ユニット。 - 前記空調ケースは、前記冷却器の底面部(163a)を支持する支持部(129)を有し、
前記冷却構造は、前記連通路を通過する前記吸入空気が、前記冷却器の底面部と熱交換して冷却される構造を含む請求項4または5に記載の車両用空調ユニット。 - 前記連通路および前記ドレン穴の少なくとも一方に、前記吸入空気と前記凝縮水の熱交換を促進する放熱部材(30)を備えた請求項4ないし6のいずれか1つに記載の車両用空調ユニット。
- 前記ドレン穴は、前記冷却器の直下に設けられている請求項5に記載の車両用空調ユニット。
- 前記冷却構造は、前記吸入空気が前記車室内へ送風される前に冷却される構造を含む請求項1ないし8のいずれか1つに記載の車両用空調ユニット。
- 前記ドレン穴に、前記吸入空気と前記凝縮水の熱交換を促進する放熱部材(30)を備えた請求項2または3に記載の車両用空調ユニット。
- 前記ドレン穴は、前記冷却器より前記空気流れ下流側に配置される請求項10に記載の車両用空調ユニット。
- 車両用空調ユニットであって、
空調ケース(12)と、
前記空調ケース内に配置されて、前記空調ケース内を流れる空気を冷却する冷却器(16)と、
前記冷却器の空気流れ下流側に配置されて、車室内へ前記空気を送風する送風機(21、22)と、を備え、
前記空調ケースは、前記冷却器で生じた凝縮水を前記空調ケース外へ排出するドレン穴(127a)を形成するドレン穴形成部と、該ドレン穴から前記空調ケース内に吸入される前記吸入空気の状態を変化させる状態変化部(30~37)と、を備えた車両用空調ユニット。 - 前記状態変化部は、前記吸入空気と前記凝縮水の熱交換を促進する放熱部材(30)、前記吸入空気を冷却する冷却部(31、36)、前記吸入空気を加熱する加熱部(35)、前記吸入空気に含まれる臭いを脱臭する脱臭部(34)、前記吸入空気から異物を除去する異物除去部(37)、前記吸入空気に香り成分を包含させる香り発生部(32)および前記吸入空気を除菌する除菌部(33)の少なくとも1つを備えた請求項11に記載の車両用空調ユニット。
- 前記状態変化部は、前記ドレン穴に設けられている請求項11または12に記載の車両用空調ユニット。
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2016
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- 2016-02-29 CN CN201680012937.8A patent/CN107405977B/zh active Active
- 2016-02-29 WO PCT/JP2016/056123 patent/WO2016140202A1/ja active Application Filing
- 2016-02-29 DE DE112016001027.3T patent/DE112016001027T5/de not_active Ceased
- 2016-02-29 JP JP2017503652A patent/JP6304444B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001039152A (ja) * | 1999-07-29 | 2001-02-13 | Denso Corp | 空調装置のドレン構造 |
JP2008286489A (ja) * | 2007-05-18 | 2008-11-27 | Calsonic Kansei Corp | 空調システム |
WO2011093052A1 (ja) * | 2010-01-27 | 2011-08-04 | サンデン株式会社 | 車両用空調ユニット |
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DE112016001027T5 (de) | 2017-12-21 |
CN107405977B (zh) | 2020-05-08 |
JPWO2016140202A1 (ja) | 2017-08-03 |
US20180022192A1 (en) | 2018-01-25 |
JP6304444B2 (ja) | 2018-04-04 |
US10434843B2 (en) | 2019-10-08 |
CN107405977A (zh) | 2017-11-28 |
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