JP2017013732A - Vehicle air-conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air-conditioner capable of keeping a temperature difference between blown air flowing toward a defroster opening portion and blown air flowing toward a foot passage.SOLUTION: A guide member 17 provided in a mix passage 11 includes a plurality of cold air hole parts 19 through which cold air passes and a plurality of warm air groove parts 21 through which warm air flows toward a defroster opening portion 15. A bypass part 23 disposed in a downstream end portion, in a warm air flow direction, of at least one warm air groove part 21 of the plurality of warm air groove parts 21 and bypassing the warm air flowing along the warm air groove part 21 to cause the worm air to flow toward a foot passage 13 is provided in a casing 5.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle air conditioner applied to a vehicle.

  Conventionally, as an air conditioner for a vehicle, a casing provided with an air passage inside, a cold air passage provided in the air passage and through which cool air flows, a hot air passage provided in the air passage and through which hot air flows, and a cold air passage A mix passage arranged downstream of the hot air passage and the cold air and the hot air is mixed, and a foot arranged downstream of the mix passage and upstream of the air flow is located downstream of the hot air passage The passage, the differential opening provided on the outer peripheral surface of the casing and facing the hot air passage across the mix passage, the cold air provided in the mix passage and flowing through the cold air passage and the hot air flowing through the hot air passage The thing provided with the baffle plate as a guide member which guides these is known (for example, refer patent document 1).

  In this vehicle air conditioner, the baffle plate has a plurality of cold air holes through which the cold air passes and a plurality of hot air grooves through which the hot air flows toward the differential opening, and the baffle plate has a temperature flowing toward the cold air holes. The air is caused to interfere with the cold air passing through the cold air hole portion and flow toward the foot passage side so that the temperature of the blown air flowing through the foot passage is not excessively lowered.

JP 2004-237940 A

  However, in the vehicle air conditioner as in Patent Document 1, since the warm air is caused to interfere with the cold air and flow toward the foot passage side in the guide member, the temperature of the blown air flowing toward the foot passage side is low. There was a risk of a significant drop.

  Further, since the warm air flowing through the warm air groove portion flows toward the differential opening as it is, there is no temperature difference between the blowing air flowing toward the differential opening and the blowing air flowing toward the foot passage, or There was a risk of reversal of temperature difference.

  Accordingly, an object of the present invention is to provide a vehicle air conditioner that can maintain a temperature difference between the blown air that flows toward the differential opening and the blown air that flows toward the foot passage.

  The present invention includes a casing provided with an air passage inside, a cold air passage provided in the air passage and through which cool air flows, a hot air passage provided in the air passage and through which hot air flows, the cold air passage, A mix passage arranged downstream of the hot air passage and mixed with the cold air and the hot air, and a foot arranged downstream of the mix passage and positioned upstream of the air flow in the downstream of the hot air passage A passage, a differential opening provided on the outer peripheral surface of the casing and facing the hot air passage across the mix passage, cold air passing through the cold air passage and the hot air provided in the mix passage A vehicle air conditioner including a guide member that guides the hot air flowing through the passage, wherein the guide member has a plurality of cold air hole portions through which the cold air passes, and the hot air is directed toward the differential opening. Multiple warm air flows And at least one of the casing and the guide member is disposed at a downstream end of the hot air flow of at least one of the plurality of hot air grooves, A detour part is provided in which the warm air flowing along the warm air groove is detoured and flows toward the foot passage.

  Advantageous Effects of Invention According to the present invention, there is an effect that it is possible to provide a vehicle air conditioner that can maintain a temperature difference between the blown air that flows toward the differential opening and the blown air that flows toward the foot passage. .

It is the perspective view which made a part of one side of the casing of the air-conditioner for vehicles concerning an embodiment of the invention a section. It is the perspective view which made some cross sections the other side of the casing of the air-conditioner for vehicles concerning an embodiment of the invention. It is the perspective view which made some cross sections the casing of the vehicle air conditioner which concerns on embodiment of this invention. It is the perspective view which made some cross sections the other side of the casing of the air-conditioner for vehicles concerning an embodiment of the invention. It is a perspective view of the guide member of the vehicle air conditioner concerning an embodiment of the invention.

  A vehicle air conditioner according to an embodiment of the present invention will be described with reference to FIGS.

  The vehicle air conditioner 1 according to the present embodiment includes a casing 5 provided with an air passage 3 therein, a cold air passage 7 provided in the air passage 3 through which cool air flows, and hot air provided in the air passage 3. The hot air passage 9 that circulates, the mix passage 11 that is arranged downstream of the cold air passage 7 and the hot air passage 9 and in which the cold air and the hot air are mixed, and the blast air flow that is arranged downstream of the mix passage 11 A foot passage 13 positioned on the downstream side of the hot air passage 9, a differential opening 15 provided on the outer peripheral surface of the casing 5 and facing the hot air passage 9 across the mix passage 11, A guide member 17 that is provided in the mix passage 11 and guides the cold air flowing through the cold air passage 7 and the hot air flowing through the hot air passage 9 is provided.

  Further, the guide member 17 has a plurality of cold air hole portions 19 through which the cold air passes and a plurality of hot air groove portions 21 through which the hot air flows toward the differential opening 15.

  The casing 5 is arranged at the downstream end of the hot air flow of at least one of the hot air grooves 21 among the plurality of hot air grooves 21, and bypasses the warm air flowing along the hot air grooves 21. A detour portion 23 that flows toward the passage 13 is provided.

  Further, a vent opening 25 that is opened on the outer peripheral surface of the casing 5 is provided between the differential opening 15 and the foot passage 13, and a vent opening is provided between the differential opening 15 and the vent opening 25. A side vent door 27 is provided as a vent door that pivots so that the portion 25 can be opened and closed.

  The side vent door 27 is arranged in parallel with the bypass portion 23 when the vent opening 25 is fully opened, and directs the warm air flowing through the bypass portion 23 toward the foot passage 13 when the vent opening 25 is fully closed. I will guide you.

  Further, the detour portion 23 is disposed so as to close the space between the hot air groove portion 21 and the differential opening 15.

  In the vehicle air conditioner 1 according to the present embodiment, the left side in FIG. 1 is the front side of the vehicle, and the right side in FIG. 1 is the rear side of the vehicle.

  As shown in FIGS. 1-4, the casing 5 is arrange | positioned inside the instrument panel (not shown) located in the front of a vehicle, for example.

  In the casing 5, a blower unit (not shown) for flowing blown air from the front side to the rear side of the vehicle is disposed on one side in the vehicle width direction of the vehicle, and the inside is communicated with the blower unit through the opening 29. ing.

  Inside the casing 5, there is provided a blower passage 3 arranged downstream of the flow of blown air from the blower unit and through which blown air flows, and adjusting means for adjusting the temperature of the blown air in the blower passage 3. Is arranged.

  Specifically, in the casing 5, an evaporator 31 as adjustment means for cooling the blown air, a heater core 33 as adjustment means for heating the blown air, a cool air passage 7 through which cool air flows, and hot air through which hot air flows The temperature is adjusted from the mix passage 11, the mix passage 11 where the cool air and the hot air are mixed, the mix door 35 as an adjusting means for adjusting the mixing ratio of the cool air and the hot air flowing through the mix passage 11, and the mix passage 11. And a foot passage 13 through which the blown air flows.

  The evaporator 31 is arranged on the most upstream side of the blown air flow in the blower passage 3 in the casing 5. The evaporator 31 is a heat exchanger for cooling, and cools all the blown air flowing from the blower unit to cool air.

  The heater core 33 is disposed on the downstream side of the evaporator 31 of the blown air flow in the blower passage 3 in the casing 5. The heater core 33 is a heat exchanger for heating, and heats the cold air that has passed through the evaporator 31 to warm air.

  The cool air passage 7 is provided along the flow direction of the blown air in the blower passage 3 so as to be positioned above the heater core 33 on the downstream side of the blown air flow of the evaporator 31. The cold air passage 7 is a flow passage through which the cold air that passes through the evaporator 31 and bypasses the heater core 33, that is, does not pass through the heater core 33 flows.

  The warm air passage 9 is provided along the flow direction of the blown air in the blower passage 3 toward the upper side on the downstream side of the blown air flow of the heater core 33. The warm air passage 9 is a flow passage through which the warm air that has passed through the heater core 33 flows.

  The mix passage 11 is provided on the downstream side of the air flow of the cool air passage 7 and the hot air passage 9 in the air passage 3. The mix passage 11 mixes the cold air flowing through the cold air passage 7 and the hot air flowing through the hot air passage 9 to form an adjusted air adjusted to a predetermined temperature.

  The mix door 35 is pivotally supported in the vicinity of the upper end of the heater core 33 so as to open and close the opening 37 of the cold air passage 7 and the opening 39 upstream of the heater core 33 by operating an actuator (not shown). Is arranged.

  The mix door 35 mixes the cold air flowing from the cold air passage 7 toward the mix passage 11 and the hot air passage 9 by adjusting the open / closed state of the opening 37 of the cold air passage 7 and the opening 39 upstream of the heater core 33. The ratio of the warm air flowing toward the passage 11 is adjusted.

  The foot passage 13 is a flow direction of the blown air toward the lower side in the blower passage 3 so that the upstream side of the blown air flow is located downstream of the warm air passage 9 on the downstream side of the blown air flow of the mix passage 11. It is provided along. In the foot passage 13, blown air as adjustment air formed in the mix passage 11 flows.

  A foot opening (not shown) connected to a foot outlet (not shown) directed to a lower space in the passenger compartment, that is, the lower body side of the occupant, is provided on the downstream side of such a foot passage 13. The flow rate of the blown air is adjusted by a foot door 41 that can be opened and closed.

  In this way, the blown air as the adjusted air whose temperature is adjusted in the mix passage 11 is formed from the differential opening 15 provided on the outer peripheral surface of the casing 5 and the vent opening 25 in addition to the foot passage 13. Flowing towards the outside.

  The differential opening 15 is formed on the outer peripheral surface of the casing 5 in the front-rear direction of the vehicle, that is, on the opposite wall portion facing the flow of the blown air flowing through the blower passage 3. And is opened so as to communicate the inside and the outside of the casing 5.

  The differential opening 15 is connected to a differential outlet (not shown) that faces the window glass of the vehicle, and the flow rate of the blown air is adjusted by a differential door 43 that can be opened and closed.

  The vent opening 25 is positioned on the outer peripheral surface of the casing 5 in the front-rear direction of the vehicle so as to face the cold air passage 7 with the mix passage 11 sandwiched between the central passage and the inside of the casing 5 so as to communicate with the outside. Is open.

  The vent opening 25 is connected to an upper space in the passenger compartment, that is, a vent outlet (not shown) directed to the upper body side of the passenger. Such a vent opening 25 has a center vent opening 45 and a side vent opening 47 arranged side by side in the longitudinal direction of the vehicle.

  The center vent opening 45 is located on the rear side of the vehicle on the outer peripheral surface of the casing 5 in the front-rear direction of the vehicle, and is opened so as to communicate the inside and the outside of the casing 5.

  The center vent opening 45 is connected to a center vent outlet (not shown) provided at a substantially central portion in the vehicle width direction of the vehicle in the vehicle compartment, and the center vent opening 45 is disposed so that the center vent opening 45 can be opened and closed. The flow rate of the blown air is adjusted by the door 49.

  The side vent opening 47 is located on the front side of the vehicle on the outer peripheral surface of the casing 5 in the front-rear direction of the vehicle, and is opened so as to communicate the inside and the outside of the casing 5.

  The side vent openings 47 are connected to side vent outlets (not shown) provided on both sides in the vehicle width direction of the vehicle in the vehicle interior, and cantilevered between the differential openings 15 and the side vent openings 47. The side vent door 27 pivotally supported in a shape opens and closes to adjust the flow rate of the blown air.

  In the mix passage 11 through which the blown air in which the cold air and the hot air are mixed is passed through the differential opening 15, the vent opening 25 and the foot passage 13, the cold air and the hot air passage 9 circulated through the cold air passage 7 are provided. A guide member 17 for guiding the circulated hot air is disposed.

  As shown in FIGS. 1 to 5, the guide member 17 extends in a rectangular shape over both sides in the vehicle width direction of the casing 5 in a direction orthogonal to the blowing air flow direction, and a cold air hole portion 19 through which cold air flows. The warm air groove portion 21 through which the warm air flows is disposed in the mix passage 11 on the most downstream side of the cold air passage 7 and the hot air passage 9.

  The cold air hole 19 is provided through the guide member 17 in the direction of air flow, and a plurality of the cold air holes 19 are provided at equal intervals in the direction orthogonal to the direction of air flow, that is, in the width direction of the casing 5.

  The plurality of cold air holes 19 are disposed between the cold air passage 7 and the vent opening 25 in the flow direction of the blown air (cold air), and the cold air flowing from the cold air passage 7 flows toward the vent opening 25. To guide you.

  The hot air groove portion 21 is provided in a groove shape in the guide member 17 so that one end side opens toward the hot air passage 9 and the other end opens toward the differential opening portion 15, and between the adjacent cold air hole portions 19. A plurality of cold air holes 19 are provided at the end portions.

  The warm air groove 21 is arranged between the warm air passage 9 and the differential opening 15 along the flow direction of the blown air (warm air), and the warm air flowing from the warm air passage 9 is arranged on the differential opening 15 side. Guide them to flow towards.

  By arranging such a guide member 17 in the mix passage 11, an upper space and a lower space in the vehicle interior due to excessive cold air flowing to the differential opening 15 side and excessive warm air flowing to the foot passage 13 side. It can suppress that the upper and lower temperature difference between is too much.

  By the way, the guide member 17 suppresses the difference in temperature between the upper and lower sides too much, but the warm air flowing through the warm air groove 21 flows toward the differential opening 15 without interfering with the cold air in the mix passage 11. There was a risk that the upper and lower temperature difference could not be obtained, or that the upper and lower temperature difference could be reversed.

  Accordingly, the casing 5 is disposed at the downstream end of the hot air flow of at least one of the hot air grooves 21 among the plurality of hot air grooves 21, and bypasses the warm air flowing along the hot air grooves 21 to form a foot. A detour portion 23 that flows toward the passage 13 is provided.

  The bypass portion 23 is provided so as to project from the side surface of the casing 5 toward the inner side, and continues from the end of the hot air groove portion 21 of the guide member 17 to between the differential opening 15 and the side vent opening 47. It is extended so that it may be connected with. The bypass portion 23 is also provided on the other side surface of the casing 5.

  The detour portion 23 is curved so that the hot air flowing from the hot air groove portion 21 is diverted toward the foot passage 13 side, and the hot air flowing through the hot air groove portion 21 where the detour portion 23 is located is When leaving the hot air groove 21, the air flows toward the foot passage 13 via the bypass 23.

  By providing such a detour portion 23, a predetermined amount of warm air flowing through all the warm air grooves 21 of the guide member 17 flows toward the foot passage 13, and warms toward the differential opening 15. It is possible to prevent the wind from flowing too much.

  In addition, since the flow direction of the hot air flowing through the hot air groove portion 21 where the bypass portion 23 is located is not formed toward the foot passage 13 due to interference with the cold air, a predetermined amount of hot air is directed toward the foot passage 13 side. And a large temperature drop of the blown air flowing toward the foot passage 13 can be prevented.

  Further, since the bypass portion 23 is extended so as to be connected by a continuous member from the end portion of the hot air groove portion 21 of the guide member 17 to between the differential opening portion 15 and the side vent opening portion 47, When viewed from the flow direction of the blown air (warm air), the bypass portion 23 is disposed so as to close the space between the warm air groove portion 21 and the differential opening 15.

  By arranging the detour portion 23 in this way, the warm air flowing along the detour portion 23 does not leak toward the differential opening 15 side, and the detour portion 23 stably stabilizes the hot air on the foot passage 13 side. It can be flowed toward.

  Here, the side vent door 27 that opens and closes the side vent opening 47 adjacent to the differential opening 15 is disposed substantially parallel to the bypass portion 23 when the side vent opening 47 is fully opened.

  By arranging the side vent door 27 and the bypass portion 23 in parallel in this way, the bypass portion 23 does not hinder the opening and closing operation of the side vent door 27, and the warm air flowing toward the bypass portion 23 is side vented. The door 27 can flow toward the foot passage 13 side.

  On the other hand, the side vent door 27, when the side vent opening 47 is fully closed, causes the warm air flowing from the bypass portion 23 to flow along the side vent door 27 and guide it toward the foot passage 13 side.

  Thus, by guiding the warm air toward the foot passage 13 side by the side vent door 27, the warm air flowing from the detour portion 23 can be stably flowed toward the foot passage 13 side.

  In such a vehicle air conditioner 1, the casing 5 is arranged at the downstream end of the hot air flow of at least one of the plurality of hot air grooves 21 among the plurality of hot air grooves 21, and flows along the hot air grooves 21. Since the detouring portion 23 is provided to detour the warm air and flow toward the foot passage 13, a predetermined amount of warm air can be directed toward the foot passage 13, and flows toward the foot passage 13. A large temperature drop of the blown air can be prevented.

  Therefore, in such a vehicle air conditioner 1, a predetermined amount of warm air is caused to flow toward the foot passage 13 by the bypass portion 23 without flowing warm air toward the foot passage 13 only by cold air. A temperature difference between the blown air flowing toward the opening 15 and the blown air flowing toward the foot passage 13 can be maintained.

  The side vent door 27 is arranged in parallel with the bypass portion 23 when the vent opening 25 is fully opened, and directs the warm air flowing through the bypass portion 23 toward the foot passage 13 when the vent opening 25 is fully closed. Therefore, the bypass portion 23 does not hinder the rotation of the side vent door 27, and the side vent door 27 allows the warm air flowing through the bypass portion 23 to flow stably toward the foot passage 13 side. it can.

  Furthermore, since the detour portion 23 is disposed so as to close the space between the hot air groove portion 21 and the differential opening 15, the warm air flowing through the detour portion 23 does not leak toward the differential opening 15, The warm air flowing through the detour portion 23 can be stably flowed toward the foot passage 13 side.

  In the vehicle air conditioner according to the embodiment of the present invention, the bypass portion is provided in the casing. However, the present invention is not limited to this, and the guide member is formed by a single member continuous with the hot air groove portion. May be provided.

  Moreover, although the detour part is provided with respect to the hot air groove part located in the side surface side of a casing among several hot air groove parts, it is not restricted to this, and the temperature located in the center part among several hot air groove parts is provided. A detour portion may be provided for the wind groove portion, and the number of detour portions is not limited to two, and may be two or more, or two or less.

  Further, the vent opening portion is arranged such that the center vent opening portion and the side vent opening portion are arranged in the front-rear direction of the vehicle on the outer peripheral surface of the casing. The opening may be arranged in parallel in the vehicle width direction at the same position in the vehicle front-rear direction.

DESCRIPTION OF SYMBOLS 1 ... Vehicle air conditioner 3 ... Air supply passage 5 ... Casing 7 ... Cool air passage 9 ... Warm air passage 11 ... Mix passage 13 ... Foot passage 15 ... Differential opening 17 ... Guide member 19 ... Cold air hole 21 ... Hot air groove 23 ... detour 25 ... vent opening 27 ... side vent door (vent door)

Claims (3)

A casing (5) provided with an air passage (3) inside, a cold air passage (7) provided in the air passage (3) through which cool air flows, and hot air provided in the air passage (3). A hot air passage (9), a mix passage (11) arranged downstream of the cold air passage (7) and the hot air passage (9) and mixed with the cold air and the hot air, and the mix passage ( 11) disposed on the downstream side of the hot air passage (9) and located on the downstream side of the hot air passage (9), and on the outer peripheral surface of the casing (5). 11), a differential opening (15) that is opened to face the hot air passage (9), and the cold air that is provided in the mix passage (11) and flows through the cold air passage (7) and the hot air A guide member (17) for guiding the warm air flowing through the passage (9); Example was a vehicle air-conditioning system,
The guide member (17) has a plurality of cold air holes (19) through which the cold air passes, and a plurality of hot air grooves (21) through which the hot air flows toward the differential opening (15),
At least one of the casing (5) and the guide member (17) includes a downstream side of the hot air flow of at least one of the plurality of hot air grooves (21). A vehicle provided with a detour portion (23) disposed at an end portion and configured to detour the warm air flowing along the warm air groove portion (21) and flow toward the foot passage (13). Air conditioner. The vehicle air conditioner according to claim 1,
Between the differential opening (15) and the foot passage (13), a vent opening (25) opened in the outer peripheral surface of the casing (5) is provided,
Between the differential opening (15) and the vent opening (25), a vent door (27) that pivots so as to open and close the vent opening (25) is provided,
The vent door (27) is arranged in parallel with the bypass portion (23) when the vent opening (25) is fully opened, and the bypass portion (23) when the vent opening (25) is fully closed. The vehicle air conditioner is characterized by guiding the hot air flowing through the side toward the foot passage (13). The vehicle air conditioner according to claim 1 or 2,
The bypass unit (23) is arranged to close the space between the hot air groove (21) and the differential opening (15).

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