JP2015182732A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle, suppressing an increase in channel resistance of a cool air passage and a warm air passage by a guide member.SOLUTION: An air conditioner 1 for a vehicle includes: a cool air passage 3; a warm air passage 5 arranged adjacently to the cool air passage 3; a mix door 7 for adjusting a ratio of cool air to warm air to a downstream between the cool air passage 3 and the warm air passage 5; a first flow channel 9 and a second flow channel 11 branched at a downstream of the mix door 7; a mode door 13 for adjusting a ratio of air flowing from the mix door 7 to distribute to the first flow channel 9 and the second flow channel 11; and a guide member 15 variably arranged and guiding air flow from the mix door 7 to a first flow channel 9 side and a second flow channel 11 side. The guide member 15 is arranged on an upstream of the mode door 13, and is linked with the operation of the mode door 13.

Description

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

  Conventionally, as a vehicle air conditioner, a cold air passage through which cold air flows, a guide passage as a hot air passage arranged adjacent to the cold air passage and through which the hot air flows, and an opening of the cold air passage opened and closed upstream of the cold air passage A mix door that adjusts a ratio of cool air that is arranged and bypasses the guide passage and cool air that flows toward the guide passage, and a first that is connected to the differential outlet and the vent outlet that are branched downstream of the mix door. 2. Description of the Related Art A known one is provided with a second flow path connected to the flow path and the duct connection port for foot blowing, and a movable guide as a guide member disposed downstream of the guide path so that the outlet of the guide path can be changed. (For example, refer to Patent Document 1).

  In this vehicle air conditioner, the movable guide is interlocked with the operation of the mix door, and when the mix door is fully heated, that is, when the opening of the passage bypassing the guide passage of the cold air passage is closed, the movable guide is moved to the guide passage. The outlet of the guide channel is actuated toward the first channel and the second channel to shorten the length of the guide channel, and the hot air flowing through the guide channel is moved to the first channel and the second channel without passing through the cool channel. Flow towards.

  On the other hand, when the movable guide is in the middle position of the mix door or at the full cooling position, that is, when the opening of the cold air passage is opened, the movable guide is operated with the outlet of the guide passage directed toward the cold air passage to lengthen the guide passage. The warm air flowing through the passage is merged with the cold air flowing through the cold air passage.

JP-A-11-291747

  By the way, in the air conditioning apparatus for vehicles like the said patent document 1, the axial part of a guide member is arrange | positioned in the cold wind path which bypasses a warm air path. In this arrangement of the guide member, when the mix door is at the full heating position, since the warm air flows only in the warm air passage, the guide member does not become the flow path resistance of the warm air.

  However, when the mix door is in the intermediate position or the full cooling position, since the guide member is disposed in the cold air passage, the guide member has a flow resistance of the cold air flowing through the cold air passage.

  In addition, in the guide member of Patent Document 1, when the mix door is in the intermediate position or the full cooling position, the cross section of the cold air passage is reduced, and the cold air or the cold air and the hot air flowing through the cold air passage are reduced. The flow path resistance of the mixed conditioned air is increased.

  Therefore, an object of the present invention is to provide a vehicle air conditioner that can suppress an increase in flow resistance of the cold air passage and the hot air passage due to the guide member.

  The invention according to claim 1 is a cold air passage through which cold air flows, a hot air passage arranged adjacent to the cold air passage and through which the hot air flows, and an opening of the cold air passage downstream of the cold air passage and the hot air passage. And a hot air passage opening arranged to be openable and closable to adjust the ratio of the cold air flowing from the cold air passage and the hot air flowing from the hot air passage, and a first branch branched downstream of the mix door An opening of the first flow path and an opening of the second flow path are disposed upstream of the flow path, the second flow path, the first flow path, and the second flow path so as to be opened and closed. A mode door that adjusts the ratio of flowing air and distributes it to the first flow path and the second flow path, and is arranged to be variable, and is directed from the mix door toward the first flow path side and the second flow path side. A vehicle air conditioner comprising a guide member for guiding an air flow An apparatus, said guide member, the mode is arranged upstream of the door, characterized in that it is linked to the operation of the mode doors.

  Invention of Claim 2 is the air conditioning apparatus for vehicles of Claim 1, Comprising: The said mixing door is a mixing channel | path where a cool air and a warm air are mixed downstream of the said cool air channel and the said warm air channel A shaft portion rotatably disposed on the shaft portion, a door portion connected to the shaft portion via a support portion and capable of opening and closing the opening of the cold air passage and the opening of the hot air passage, and the support portion and the door portion. The guide member is disposed on the hot air passage side downstream of the mix door, and the door portion of the mix door When the opening of the hot air passage is closed, a part of the guide member enters into the circulation portion of the mix door.

  Invention of Claim 3 is the air conditioning apparatus for vehicles of Claim 1 or 2, Comprising: The said guide member is rotatably arrange | positioned upstream of the said mode door, This spindle part A pair of guide plates respectively extending toward the mix door side and the mode door side, the first flow path is a vent flow path disposed on the cold air passage side, The second flow path is a foot flow path disposed on the warm air passage side, and the mode door has a vent mode position for flowing air flowing from the mix door toward the first flow path, and the mix door. A foot mode position for flowing air flowing from the mix door toward the second flow path, and a bi-level mode position for flowing air flowing from the mix door toward the first flow path and the second flow path, respectively. The guide member is When the door is in the vent mode position, cool air is guided to the first flow path via the mode door, and when the mode door is in the bi-level mode position, hot air is guided to the first flow path. The hot air is guided in parallel along the hot air passage when the mode door is in the foot mode position.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that the air conditioning apparatus for vehicles which can suppress the increase in flow-path resistance of the cold air path by a guide member or a warm air path can be provided.

1 is a schematic plan view of a vehicle air conditioner to which a vehicle air conditioner according to an embodiment of the present invention is applied. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is sectional drawing when the mode door of the air conditioning apparatus for vehicles which concerns on embodiment of this invention is a fully closed mode position. It is a perspective view of the mix door and guide member of the air harmony device for vehicles concerning an embodiment of the invention. It is sectional drawing when the mode door of the air conditioning apparatus for vehicles which concerns on embodiment of this invention is a bilevel mode position. (A) is sectional drawing when the mode door of the air conditioning apparatus for vehicles which concerns on embodiment of this invention is a vent mode position. (B) is sectional drawing when the mode door of the air conditioning apparatus for vehicles which concerns on embodiment of this invention is a foot mode position.

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

  A vehicle air conditioner 1 according to an embodiment of the present invention includes a cold air passage 3 through which cold air flows, a hot air passage 5 that is disposed adjacent to the cold air passage 3 and through which hot air flows, and the cold air passage 3 and the hot air. A mix door 7 disposed downstream of the passage 5 so as to be able to open and close the opening of the cold air passage 3 and the opening of the hot air passage 5 and adjusting the ratio of the cold air flowing from the cold air passage 3 and the hot air flowing from the hot air passage 5 The first flow path 9 and the second flow path 11 branched downstream of the mix door 7, the opening of the first flow path 9 and the second flow upstream of the first flow path 9 and the second flow path 11. A mode door 13 that is arranged so as to be able to open and close the opening of the path 11 and adjusts the ratio of the air flowing from the mix door 7 and distributes it to the first flow path 9 and the second flow path 11, and a mix door arranged so as to be variable. Guide member for guiding the flow of air from 7 toward the first flow path 9 side and the second flow path 11 side And a 5.

  The guide member 15 is disposed upstream of the mode door 13 and interlocked with the operation of the mode door 13.

  The mix door 7 includes a shaft portion 19 rotatably disposed in a mixing passage 17 in which cold air and hot air are mixed downstream of the cold air passage 3 and the hot air passage 5, and a support portion on the shaft portion 19. 21 is formed by a door portion 23 that is connected through a door 21 and can open and close the opening of the cold air passage 3 and the opening of the hot air passage 5, and the support portion 21 and the door portion 23. And a distribution unit 25.

  The guide member 15 is arranged on the hot air passage 5 side downstream of the mix door 7, and when the door portion 23 of the mix door 7 closes the opening of the hot air passage 5, a part of the guide member 15 is mixed. It enters into the distribution part 25 of the door 7.

  Further, the guide member 15 is a pair of support shafts 27 that are rotatably arranged upstream of the mode door 13 and a pair that extends from the support shaft portion 27 toward the mix door 7 side and the mode door 13 side. Guide plates 29 and 31.

  Further, the first flow path is a vent flow path 9 disposed on the cold air passage 3 side, and the second flow path is a foot flow path 11 disposed on the hot air passage 5 side.

  The mode door 13 has a vent mode position for flowing air flowing from the mix door 7 toward the vent flow path 9, a foot mode position for flowing air flowing from the mix door 7 toward the foot flow path 11, and the mix door 7. The bi-level mode position for flowing the air flowing from the head toward the vent channel 9 and the foot channel 11 respectively.

  The guide member 15 guides the cool air to the vent flow path 9 side through the mode door 13 when the mode door 13 is in the vent mode position, and generates warm air when the mode door 13 is in the bi-level mode position. It guides to the vent flow path 9 side and guides the warm air in parallel along the warm air passage 5 when the mode door 13 is in the foot mode position.

  Here, the vehicle air conditioner 1 constitutes a part of a vehicle air conditioner 101 as shown in FIG. The vehicle air conditioner 101 is disposed, for example, on the lower inner side of an instrument panel (not shown) of the vehicle, and a rear seat air conditioning unit 103 is provided at the center in the vehicle width direction. The front seat air conditioning units 105 and 105 are provided, and the front seat air conditioning and the rear seat air conditioning in the vehicle compartment are performed independently.

  As shown in FIG. 2, the pair of front seat air conditioning units 105, 105 has the same case 33 fixed to the vehicle, and the front seat air passages 107, 107 are formed inside the case 33. . In addition, since a pair of front seat air-conditioning parts 105 and 105 are the same structures, below, only one front seat air-conditioning part 105 is demonstrated and description about the other front seat air-conditioning part 105 is abbreviate | omitted.

  The front seat air passage 107 is configured to suck in the inside air and the outside air by a blower (not shown). In the front seat air passage 107, an evaporator 109, a heater core 111, and a front seat mix door 113 are arranged.

  The evaporator 109 is disposed on the uppermost stream side of the front-seat air passage 107, and is provided in the entire region of the case 33 in the vehicle width direction so as to straddle the pair of front-seat air-conditioning units 105 and 105 and the rear-seat air-conditioning unit 103. Cool the air flowing from the blower.

  The heater core 111 is disposed below the evaporator 109 of the front seat air passage 107 on the downstream side, and covers the entire area of the case 33 in the vehicle width direction so as to straddle the pair of front seat air conditioning units 105, 105 and the rear seat air conditioning unit 103. The cool air flowing from the evaporator 109 is heated.

  The front seat mix door 113 is provided in the front seat air passage 107 so that the opening of the passage through which the cool air flows to the heater core 111 side and the opening of the passage through which the cool air bypasses the heater core 111 can be opened and closed, and the cool air flowing through the heater core 111 And the ratio of the cool air that bypasses the heater core 111 is adjusted to form the conditioned air at a desired temperature.

  The warm air that flows through the heater core 111 and the cold air that bypasses the heater core 111 are merged in the front-seat mixing passage 115 provided downstream of the front-seat air passage 107 and are provided in the case 33. It flows toward the blowout doors 117, 119, 121.

  By opening and closing these blowing doors 117, 119, 121, a front seat defroster outlet (not shown), a front vent outlet (not shown), a front foot outlet ( The distribution of conditioned air to (not shown) is adjusted. Between the pair of front seat air conditioning units 105 and 105, a rear seat air conditioning unit 103 is provided.

  As shown in FIG. 3, the rear seat air conditioning unit 103 has the same case 33 that forms the front seat air passage 107 (see FIG. 2) of the front seat air conditioning unit 105. An air blowing path 123 is formed. The rear seat air passage 123 is configured to suck in the inside air and the outside air by the same blower used for the front seat air passage 107 (see FIG. 2). In the rear seat air passage 123, the same evaporator 109 as the front seat air passage 107 is disposed on the most upstream side, and on the downstream side of the evaporator 109, the same heater core 111 as the front seat air passage 107 is provided. Has been placed.

  In such a rear-seat air passage 123, the cool air passage 3 that is located upstream on the downstream side of the evaporator 109 and flows cool air that bypasses the heater core 111 and the heater core 111 that is located below and downstream of the evaporator 109 flowed through the heater core 111. A warm air passage 5 through which warm air flows is provided.

  The cool air passage 3 and the hot air passage 5 are partitioned by the front seat air passages 107 and 107 adjacent to each other in the vehicle width direction of the case 33 and a partition wall (not shown) provided in the case 33.

  The cold air passage 3 and the hot air passage 5 provided in the rear seat air passage 123 are components of the vehicle air conditioner 1 that controls the conditioned air on the rear seat side. Hereinafter, the vehicle air conditioner 1 will be described with reference to FIGS. In FIG. 3, the link mechanism 41 that links the mode door 13 and the guide member 15 is omitted.

  As shown in FIGS. 3 to 7, the vehicle air conditioner 1 includes a cold air passage 3, a hot air passage 5, a mix door 7, a vent passage 9 as a first passage, and a second passage. As a foot channel 11, a mode door 13, a guide member 15, and the like.

  The cool air passage 3 is disposed above the case 33, and as described above, the cool air cooled by the evaporator 109 bypassing the heater core 111 flows. A hot air passage 5 is disposed adjacent to the cold air passage 3.

  The hot air passage 5 is disposed below the case 33 and adjacent to the cold air passage 3. As described above, the hot air heated by the heater core 111 flows through the cold air from the evaporator 109. A mix door 7 is disposed downstream of the hot air passage 5 and the cold air passage 3.

  The mix door 7 includes a shaft portion 19 rotatably disposed in a mixing passage 17 in which cold air and hot air are mixed downstream of the cold air passage 3 and the hot air passage 5, and a support portion 21 provided on the shaft portion 19. And a flow passage portion formed by a support portion 21 and a door portion 23 through which the cold air and the hot air can circulate. And a so-called rotary type door. In addition, although the reinforcement rib which maintains the rigidity of the mix door 7 is provided in the distribution part 25, it is not necessary to provide this reinforcement rib.

  In the mix door 7, the shaft portion 19 is rotated by an actuator (not shown) such as an electric motor, and the door portion 23 is opened to the cold air passage 3 and the hot air passage 5 according to the rotation angle of the shaft portion 19. By opening and closing, the ratio of the cold air flowing from the cold air passage 3 and the hot air flowing from the hot air passage 5 in the mixing passage 17 and the circulation section 25 is adjusted, and the conditioned air having a desired temperature is formed.

  A vent channel 9 and a foot channel 11 branched in the vertical direction of the vehicle are arranged downstream of the mix door 7.

  The vent flow path 9 is arranged on the downstream side of the mix door 7 of the case 33 and on the cold air passage 3 side, and communicates with a vent outlet (not shown) for blowing air-conditioned air toward the upper body of the passenger. Yes.

  Since the vent channel 9 is provided on the cold air passage 3 side in the case 33, the cold air flowing from the cold air passage 3 is easy to flow in, and the temperature of the conditioned air blown out from the vent outlet toward the upper body of the occupant is set low. can do.

  The foot channel 11 is disposed on the downstream side of the mix door 7 of the case 33 and above the hot air passage 5 and communicates with a foot outlet (not shown) for blowing air-conditioned air toward the feet of the passenger. ing.

  Since the foot channel 11 is provided on the warm air passage 5 side in the case 33, the warm air flowing from the warm air passage 5 is easy to flow in, and the temperature of the conditioned air that blows out from the foot outlet toward the feet of the occupant Can be set high.

  Thus, by providing the vent flow path 9 on the cold air passage 3 side and the foot flow path 11 on the hot air passage 5 side, it is possible to make a temperature difference in the conditioned air blown to the upper body and the feet of the occupant. A mode door 13 is disposed upstream of the vent channel 9 and the foot channel 11.

  The mode door 13 is provided with a fulcrum portion 35 rotatably disposed upstream of the vent channel 9 and the foot channel 11, and is provided integrally with the fulcrum portion 35 so that the opening of the vent channel 9 is opened by the rotation of the fulcrum portion 35. It comprises a so-called butterfly type door having a vent door portion 37 that can be opened and closed, and a foot door portion 39 that is provided integrally with the fulcrum portion 35 and that can open and close the opening of the foot channel 11 by the rotation of the fulcrum portion 35.

  In the mode door 13, the fulcrum portion 35 is rotated by an actuator (not shown) such as an electric motor, and the vent door portion 37 and the foot door portion 39 are opened and opened in the vent flow path 9 according to the rotation angle of the fulcrum portion 35. Each mode position is switched by opening and closing the opening of the flow path 11.

  Specifically, in the vent mode position of the mode door 13 shown in FIG. 7A, the foot door part 39 closes the opening of the foot channel 11 and the vent door part 37 opens the vent channel 9 by the rotation of the fulcrum part 35. open.

  At the vent mode position of the mode door 13, the door portion 23 of the mix door 7 closes the opening of the hot air passage 5 and opens the opening of the cold air passage 3. The full cooling position is frequently used, and the cold air from the cold air passage 3 is used. Flows into the vent channel 9.

  At the foot mode position of the mode door 13 shown in FIG. 7B, the vent door portion 37 closes the opening of the vent channel 9 and the foot door portion 39 opens the opening of the foot channel 11 by the rotation of the fulcrum portion 35.

  At the foot mode position of the mode door 13, the door portion 23 of the mix door 7 closes the opening of the cold air passage 3 and opens the hot air passage 5. Hot air flows into the foot channel 11.

  In the foot mode position of the mode door 13, the vent door portion 37 does not completely close the opening of the vent channel 9. This is because the warm air is slightly poured into the vent flow path 9 so as to meet the demands of the passengers who want to prevent fogging of the windows in the passenger compartment and weak vent air.

  In the bi-level mode position of the mode door 13 shown in FIG. 6, the vent door part 37 opens the vent flow path 9 and the foot door part 39 also opens the foot flow path 11 by the rotation of the fulcrum part 35.

  In the bi-level mode position of the mode door 13, the door portion 23 of the mix door 7 opens both the cold air passage 3 and the hot air passage 5, and is frequently used at an intermediate position between the full cooling position and the full heating position. The conditioned air adjusted in the passage 17 and the distribution part 25 of the mix door 7 flows into the vent channel 9 and the foot channel 11, respectively.

  Here, the mode door 13 in FIGS. 3 and 4 is in the fully closed mode position. In the fully closed mode position of the mode door 13, the foot door portion 39 closes the opening of the mixing passage 17 by the rotation of the fulcrum portion 35.

  The foot door portion 39 that closes the opening of the mixing passage 17 is formed in a square shape in a side view, and has a first surface 39a and a second surface 39b. The first surface 39a and the second surface 39b are configured such that when the mode door 13 is in the fully closed mode, the first surface 39a of the opening of the mixing passage 17 closes the opening on the vent channel 9 side, and the second surface 39b The surface 39b closes the opening on the foot channel 11 side. In addition, sealing members, such as packing, are assembled | attached to the 1st surface 39a and the 2nd surface 39b.

  In such a fully-closed mode position of the mode door 13, the conditioned air from the cold air passage 3 and the hot air passage 5 through the mix door 7 is fed through the first surface 39 a of the foot door portion 39 regardless of the position of the mix door 7. And the second surface 39b, the conditioned air does not flow into the vent channel 9 and the foot channel 11, and the supply of the conditioned air to the rear seat side of the vehicle is blocked.

  By the way, in the vehicle air conditioner 1, the vent flow path 9 is provided on the cold air passage 3 side and the foot flow path 11 is provided on the hot air passage 5 side. Hot air is easy to flow into the road 11.

  For this reason, in the bi-level mode position of the mode door 13, the conditioned air adjusted in the mixing passage 17 and the flow portion 25 of the mix door 7 flows into the vent channel 9 and the foot channel 11, respectively. The temperature difference between the conditioned air flowing into the path 9 and the conditioned air flowing into the foot channel 11 is excessive. Therefore, a guide member 15 that guides the flow of the cold air and the hot air is provided downstream of the mix door 7 and upstream of the mode door 13.

  The guide member 15 is a pair of support shafts 27 that are rotatably arranged upstream of the mode door 13 and a pair that extends in parallel from the support shaft portion 27 toward the mix door 7 side and the mode door 13 side. Guide plates 29 and 31.

  The operation of the guide member 15 is linked to the operation of the mode door 13 via the link mechanism 41. The link mechanism 41 includes a guide link 43 and a guide lever 45.

  The guide link 43 is formed in a fan shape, the center side is fixed so as to be integrally rotatable with the fulcrum part 35 of the mode door 13, and the guide link 43 rotates in conjunction with the rotation angle of the fulcrum part 35 of the mode door 13. Is done.

  On the outer diameter side of the guide link 43, a guide groove 47 having one end extending toward the mix door 7 is provided, and the guide convex portion 49 of the guide lever 45 can slide in the guide groove 47. Engaged.

  One end of the guide lever 45 is fixed so as to be integrally rotatable with the support shaft portion 27 of the guide member 15 and is rotatably arranged in a cantilevered manner. The convex part 49 protrudes in the direction orthogonal to the air flow direction.

  The guide lever 45 moves while the guide projection 49 slides in the guide groove 47 of the guide link 43 by the mode door 13 rotating in each mode position and the guide link 43 rotating in conjunction with each other. To do.

  Due to the movement of the guide protrusion 49 in the guide groove 47, the guide member 15 is paired with the support shaft 27 as a fulcrum in accordance with the rotation of the guide lever 45 and in accordance with each mode position of the mode door 13. 29 and 31 are rotated.

  As shown in FIG. 6, the guide member 15 is rotated in conjunction with the link mechanism 41 by the rotation of the mode door 13 when the mode door 13 is in the bilevel mode position. The guide plates 29 and 31 are disposed in the mixing passage 17 so as to be inclined upward toward the vent channel 9 side.

  At this time, the mix door 7 is rotated to an intermediate position between the full cooling position and the full heating position where the door portion 23 opens the opening of the cold air passage 3 and the opening of the hot air passage 5.

  By arranging the guide member 15 in this way, the hot air flowing from the hot air passage 5 flows in the mixing passage 17 along the upper surfaces of the pair of guide plates 29, 31 of the guide member 15, and the hot air is cooled by the cold air passage. The air flows toward the vent flow path 9 while being merged with the cold air flowing from 3.

  Thus, by arranging the guide member 15 when the mode door 13 is in the bi-level mode position, the warm air flows toward the vent channel 9 side, so the conditioned air and the foot channel that flow into the vent channel 9 Therefore, the temperature difference between the conditioned air flowing into the vent channel 9 and the conditioned air flowing into the foot channel 11 can be appropriately maintained.

  7A, when the mode door 13 is in the vent mode position, the guide member 15 is rotated in conjunction with the link mechanism 41 by the rotation of the mode door 13. Of the guide plates 29, 31, the guide plate 29 on the side of the mix door 7 enters the flow portion 25 of the mix door 7, and the pair of guide plates 29, 31 are in the flow portion 25 and in the mixing passage 17. It arrange | positions so that it may become a downward slope toward the side.

  At this time, the mix door 7 is rotated to the full cooling position where the door portion 23 opens the opening of the cold air passage 3 and closes the opening of the hot air passage 5.

  By arranging the guide member 15 in this way, the cold air from the cold air passage 3 entering the flow portion 25 of the mix door 7 is brought into the mixing passage 17 along the upper surfaces of the pair of guide plates 29 and 31 of the guide member 15. The cold air flows toward the vent flow path 9 via the space between the vent door portion 37 and the foot door portion 39 of the mode door 13 while reducing the flow resistance of the cold air.

  The cold air flowing through the cold air passage 3 flows along the upper portion of the mixing passage 17 and is easy to flow into the vent flow passage 9, so the flow rate of the cold air entering the circulation portion 25 of the mix door 7 is small, Although it is not necessary to arrange the pair of guide plates 29 and 31 of the guide member 15 so as to be inclined upward toward the vent flow path 9 side, the pair of guide plates 29 and 31 of the guide member 15 is disposed on the vent flow path 9 side. You may arrange | position so that it may become an upward inclination toward.

  As shown in FIG. 7B, the guide member 15 is rotated in conjunction with the link mechanism 41 by the rotation of the mode door 13 when the mode door 13 is in the foot mode position. The guide plates 29 and 31 are arranged in the mixing passage 17 so as to be parallel to the hot air passage 5, the vent passage 9 and the foot passage 11 along the flow of the hot air.

  At this time, the mix door 7 is rotated to the full heating position where the door portion 23 closes the opening of the cold air passage 3 and opens the opening of the hot air passage 5.

  By arranging the guide member 15 in this way, it is possible to suppress the pair of guide plates 29 and 31 of the guide member 15 from having a flow resistance of the hot air flowing from the hot air passage 5 toward the foot flow passage 11. The hot air can be stably guided from the hot air passage 5 to the foot passage 11.

  When the mode door 13 is in the foot mode position, the first surface 39a that is the upstream surface of the mode door 13 flows through the hot air passage 5 in the same manner as the pair of guide plates 29 and 31 of the guide member 15. It is arranged in parallel with the warm air flow.

  By arranging the first surface 39a on the upstream side of the mode door 13 when the mode door 13 is in the foot mode position in this way, the hot air passage 5 is similar to the pair of guide plates 29 and 31 of the guide member 15. Since the warm air flowing from the air flows into the foot channel 11 along the first surface 39a of the mode door 13, an increase in the channel resistance of the warm air by the mode door 13 can be suppressed.

  In such a vehicle air conditioner 1, since the guide member 15 is disposed upstream of the mode door 13 and is interlocked with the operation of the mode door 13, the link member 41 that interlocks the guide member 15 and the guide member 15 is provided. Is not arranged in the cold air passage 3 or the hot air passage 5, and the guide member 15 or the link mechanism 41 is arranged in the mixing passage 17 where the cold air flowing through the cold air passage 3 and the hot air flowing through the hot air passage 5 merge. Will be.

  For this reason, the guide member 15 does not increase the flow resistance of the cold air passage 3 and the hot air passage 5, and the mixing passage 17 where the cold air and the hot air join together from the mix door 7 to the vent flow passage 9 side and the foot. By guiding the air flow toward the channel 11 side, the mixing efficiency of the cold air and the hot air can be improved.

  Therefore, in such a vehicle air conditioner 1, it is possible to suppress an increase in the flow resistance of the cold air passage 3 and the hot air passage 5 due to the guide member 15.

  In addition, the guide member 15 is configured such that when the door portion 23 of the mix door 7 closes the opening of the hot air passage 5, the guide plate 29 that is a part of the guide member 15 enters the flow portion 25 of the mix door 7. The cold air flowing from the cold air passage 3 into the flow portion 25 of the mix door 7 can be caused to flow along the guide member 15, and the flow resistance of the cold air can be reduced.

  Furthermore, since the vent flow path 9 is disposed on the cold air passage 3 side and the foot flow path 11 is disposed on the hot air passage 5 side, when the mode door 13 is in the bi-level mode position, the cold air flows to the vent flow path. 9 easily flows into the foot channel 11, and it is easy to create a temperature difference between the air flowing into the vent channel 9 and the air flowing into the foot channel 11. Control of the mix door 7 for adjusting the ratio does not become complicated.

  Further, since the guide member 15 guides the warm air to the vent channel 9 side when the mode door 13 is in the bi-level mode position, the warm air can be merged with the cool air that easily flows into the vent channel 9. The temperature difference between the air flowing into the vent channel 9 and the air flowing into the foot channel 11 is not excessive, and the temperature difference between the air flowing into the vent channel 9 and the air flowing into the foot channel 11 is appropriately maintained. can do.

  Further, since the guide member 15 guides the cool air to the vent flow path 9 side via the mode door 13 when the mode door 13 is in the vent mode position, the guide member 15 has the vent flow path 9 side with respect to the cool air flowing from the cool air passage 3. Therefore, the cool air can be stably guided to the vent channel 9.

  Further, since the guide member 15 guides the warm air in parallel along the warm air passage 5 when the mode door 13 is in the foot mode position, the guide member 15 has a flow path for the warm air flowing from the warm air passage 5. Resistance can be suppressed, and warm air can be stably guided to the foot channel 11.

  In addition, in the vehicle air conditioner according to the embodiment of the present invention, the arrangement state of the guide member at each mode position of the mode door is shown, but is not limited to these arrangement states. As long as the air flow can be accurately guided to each mode position, the guide member may be arranged in any manner.

  In addition, the link mechanism that interlocks the mode door and the guide member is disposed inside the case, but the present invention is not limited thereto, and the link mechanism may be disposed outside the case.

  Furthermore, at the foot mode position of the mode door, the vent door portion does not completely close the opening of the vent flow path, but the present invention is not limited thereto, and the vent door portion may completely close the opening of the vent flow path.

DESCRIPTION OF SYMBOLS 1 ... Air conditioning apparatus for vehicles 3 ... Cold air path 5 ... Hot air path 7 ... Mix door 9 ... 1st flow path (vent flow path)
11 ... Second channel (foot channel)
DESCRIPTION OF SYMBOLS 13 ... Mode door 15 ... Guide member 17 ... Mixing passage 19 ... Shaft part 21 ... Support part 23 ... Door part 25 ... Distribution | circulation part 27 ... Supporting shaft part 29, 31 ... Guide plate

Claims (3)

A cold air passage (3) through which cold air flows, a hot air passage (5) arranged adjacent to the cold air passage (3) through which hot air flows, and the cold air passage (3) and the hot air passage (5) The opening of the cold air passage (3) and the opening of the hot air passage (5) are arranged to be able to open and close downstream, and the cold air flowing from the cold air passage (3) and the hot air flowing from the hot air passage (5) The mix door (7) for adjusting the ratio, the first flow path (9) and the second flow path (11) branched downstream of the mix door (7), the first flow path (9) and the The ratio of the air flowing from the mix door (7) that is arranged to be able to open and close the opening of the first flow path (9) and the opening of the second flow path (11) upstream of the second flow path (11) And a mode door (13) that distributes the first flow path (9) and the second flow path (11) in such a manner as to be adjustable. A vehicle air conditioner comprising a guide member (15) for guiding the flow of air from the mix door (7) toward the first flow path (9) and the second flow path (11). 1)
The vehicle air conditioner (1), wherein the guide member (15) is disposed upstream of the mode door (13) and is interlocked with the operation of the mode door (13). The vehicle air conditioner (1) according to claim 1,
The mix door (7) has a shaft portion rotatably disposed in a mixing passage (17) in which cold air and hot air are mixed downstream of the cold air passage (3) and the hot air passage (5). 19) and a door portion (23) connected to the shaft portion (19) via a support portion (21) and capable of opening and closing the opening of the cold air passage (3) and the opening of the hot air passage (5). And a circulation part (25) formed by the support part (21) and the door part (23) and capable of circulating cold air and hot air therein,
The guide member (15) is disposed on the hot air passage (5) side downstream of the mix door (7), and the door portion (23) of the mix door (7) is disposed on the hot air passage (5). A vehicle air conditioner (1), wherein a part of the guide member (15) enters the flow part (25) of the mix door (7) when the opening is closed. The vehicle air conditioner (1) according to claim 1 or 2,
The guide member (15) includes a support shaft portion (27) rotatably disposed upstream of the mode door (13), and the mix door (7) side and the mode door from the support shaft portion (27). (13) a pair of guide plates (29, 31) respectively extending toward the side,
The first flow path (9) is a vent flow path disposed on the cold air passage (3) side, and the second flow path (11) is a foot disposed on the hot air path (5) side. A flow path,
The mode door (13) includes a vent mode position for flowing air flowing from the mix door (7) toward the first flow path (9), and air flowing from the mix door (7) to the second flow path. A foot mode position for flowing toward (11), and a bi-level mode position for flowing air flowing from the mix door (7) toward the first flow path (9) and the second flow path (11), respectively. Have
The guide member (15) guides cool air to the first flow path (9) side through the mode door (13) when the mode door (7) is in the vent mode position, and the mode door When (13) is in the bi-level mode position, warm air is guided to the first flow path (9) side, and when the mode door (13) is in the foot mode position, warm air is directed to the warm air passage. A vehicle air conditioner (1) characterized by being guided in parallel along (5).

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