JP2018131150A - Air conditioning device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve comfort for an occupant by suppressing excessive rise in temperature of conditioning air that is supplied to each air outlet when conditioning air is supplied to an occupant in a rear seat.SOLUTION: In an air conditioning device for a vehicle, a baffle plate 50 including a right-side warm air guide part 51 for guiding warm air flowing out from a downstream end of a warm air passage 31 to a passage 37 for a rear seat and a center cool air guide part 55 for guiding cool air flowing out from a downstream end of a lower-side cold air passage 33 to a heat passage 36 is disposed inside an air conditioning casing.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a vehicle air conditioner mounted on, for example, an automobile, and particularly relates to a technical field of a structure configured to obtain conditioned air by separately generating and mixing hot air and cold air.

  In general, a vehicle air conditioner includes a cooling heat exchanger for cooling air conditioning air, a heating heat exchanger for heating air conditioning air, an air mix damper for determining a mixing ratio of hot air and cold air, It has a direction switching damper, etc., mixes hot air and cold air so that the mixing ratio determined by the air mix damper is generated to generate conditioned air, and the generated conditioned air is operated by the blowing direction switching damper. To the vicinity of the windshield of the passenger compartment, the upper body of the occupant, the feet, etc. (see, for example, Patent Documents 1 and 2).

  In Patent Document 1, a cold air passage through which air bypassing the heating heat exchanger flows and a hot air passage through which air that has passed through the heating heat exchanger flows are formed inside the casing. The baffle plate for air conditioning is arrange | positioned in the site | part where a wind path merges. The air-conditioning baffle plate has a passage portion for sending warm air heated by the heating heat exchanger from the hot air passage to the vicinity of the vent blowing opening, and cold air bypassing the heating heat exchanger. There is provided a blow-off portion that is sent from the passage to the vicinity of the differential blow-off opening and the foot blow-off opening.

  Patent Document 2 discloses a blower guide disposed in a mixed region of cold air and hot air inside a casing. The blower guide includes a hot air guide tube, an adjustment plate, and a rectifying plate. A part of the warm air supplied to the air mix space flows through the warm air guide tube, so that it is guided to the defroster outlet side without mixing the cool air with the warm air. Moreover, the blowing direction of the cold air supplied to the air mix space is guided by the adjustment plate so as to face the hot air side. Further, the cool air supplied to the air mix space is rectified by the rectifying plate.

Japanese Patent No. 4431955 Japanese Patent No. 5325748

  By the way, by arrange | positioning the baffle plate for an air conditioning and a ventilation guide inside a casing like patent document 1, 2, it can guide cold air and warm air separately in a desired direction according to each blowing mode. It will be possible.

  However, some vehicle air conditioners are configured to supply conditioned air to the rear seat passengers. Supplying conditioned air to the rear seat occupant also requires that the conditioned air outlet for the rear seat occupant be formed in the casing, which not only changes the structure of the casing, but also greatly changes the air flow in the casing. Become. For this reason, the air-conditioning baffle plate provided with the passage part for warm air like patent document 1, and the blow-off part for cold air, and the ventilation provided with the warm air guide cylinder, adjustment plate, and rectifying plate like patent document 2 If the guide is simply provided inside the casing, it may be difficult to supply conditioned air having a desired temperature to each outlet.

  For example, depending on the positional relationship between the exit of the conditioned air for the rear seat occupant and the downstream end of the cool air passage, the cool air can easily flow toward the exit of the conditioned air for the rear seat occupant. The temperature may tend to be low. In addition, in order to provide a conditioned air outlet for the rear seat occupant, the conditioned air outlet supplied to the foot may come close to the downstream end of the hot air passage. The temperature of the conditioned air may tend to be high. These are the factors that decrease the comfort of passengers, but we want to eliminate them. Since it is not premised on supplying conditioned air to the above, the above-mentioned problems cannot be solved.

  The present invention has been made in view of the above points, and an object of the present invention is to supply conditioned air supplied to each outlet when supplying conditioned air to not only the front seat but also the rear seat occupant. The object is to improve passenger comfort by preventing the temperature from becoming too high or too low.

  In order to achieve the above object, the present invention aims to optimize the temperature of the conditioned air for the rear seat occupant by actively guiding the warm air to the rear seat passage by the baffle plate provided in the casing. The temperature of the conditioned air for the feet can be optimized by actively guiding the cool air to the foot supply passage by the baffle plate.

  1st invention is the heat exchanger for cooling which cools the air for air conditioning, the heat exchanger for heating which heats the air for air conditioning, the cold air cooled with the said heat exchanger for cooling, and the said heat exchanger for heating An air mix damper for determining a mixing ratio with the warm air heated by the above, and an air conditioning casing for housing the cooling heat exchanger, the heating heat exchanger, and the air mix damper, and the air mix damper In the vehicle air conditioner configured to generate conditioned air by mixing hot air and cold air so as to have a determined mixing ratio, and to supply the generated conditioned air to each part of the passenger compartment, the air conditioning casing The warm air passage through which the warm air heated by the heating heat exchanger circulates and the cold air provided below the warm air passage and through which the cold air cooled by the cooling heat exchanger circulates. A passage and the A rear-seat passage that is provided in the lower part of the casing and supplies conditioned air to the rear-seat occupant, and a foot-supply passage that is provided above the rear-seat passage and supplies conditioned air to the vicinity of the passenger's feet. In the casing, a hot air guide portion for guiding hot air flowing out from the downstream end of the hot air passage to the rear seat passage, and cold air flowing out from the downstream end of the cold air passage are formed in the casing. A baffle plate including a cold air guide for guiding to the foot supply passage is disposed.

  According to this configuration, since the cold air passage is provided below the hot air passage, the cold air easily flows to the lower part of the air conditioning casing, and the rear seat passage is provided in the lower part of the air conditioning casing. Although the cool air easily flows in the rear seat passage, the warm air flowing out from the downstream end of the hot air passage is guided to the rear seat passage by the hot air guide portion of the baffle plate. The temperature of the conditioned air becomes appropriate.

  Further, since the warm air passage is provided above the cold air passage and the foot supply passage is provided above the rear seat passage, the warm air easily flows into the foot supply passage. Since the cold air flowing out from the downstream end of the cold air passage is guided to the foot supply passage by the cold air guide portion of the plate, the temperature of the conditioned air for the foot becomes appropriate.

  In a second aspect based on the first aspect, the cold air guide portion of the baffle plate is disposed so as to block the flow of the hot air flowing from the downstream end of the hot air passage to the foot supply passage. It is characterized by.

  According to this configuration, since the flow of warm air flowing from the downstream end of the warm air passage to the foot supply passage is blocked by the cold air guide portion of the baffle plate, the temperature rise of the conditioned air for foot is suppressed.

  According to a third aspect, in the first or second aspect, the hot air guide portion of the baffle plate is disposed so as to reduce the amount of cold air flowing from the downstream end of the cold air passage to the rear seat passage. It is characterized by that.

  According to this configuration, since the amount of cold air flowing from the downstream end of the cold air passage to the rear seat passage is reduced by the hot air guide portion of the baffle plate, the temperature reduction of the conditioned air for the rear seat passenger is suppressed.

  According to a fourth invention, in any one of the first to third inventions, the cold air guide portion of the baffle plate extends in the vertical direction and is arranged to face the downstream end of the hot air passage. And the opposing wall portion is formed so as to move away from the downstream end of the warm air passage toward the upper side.

  According to this structure, the clearance gap for making warm air flow out is formed between the opposing wall part of the cold wind guide part of a baffle plate, and the downstream end of a warm air path.

  According to a fifth invention, in any one of the first to fourth inventions, the hot air guide portions and the cold air guide portions of the baffle plate are alternately arranged in the vehicle width direction, and when viewed from the vehicle width direction. The hot air guiding direction by the hot air guiding unit and the hot air guiding direction by the cold air guiding unit intersect each other.

  According to this configuration, the hot air guide direction and the cold air guide direction can be set in any direction without interfering with each other, so the temperature of the conditioned air for the rear seat occupant and the foot It becomes easy to set the temperature of the conditioned air to the target temperature.

  According to a sixth aspect of the present invention, in any one of the first to fifth aspects, a center vent outlet for supplying conditioned air to the upper half of the front seat occupant is formed at a central portion in the vehicle width direction in the upper portion of the air conditioning casing. The cold air guide portion of the baffle plate is provided at a central portion in the vehicle width direction of the air conditioning casing and guides the cold air upward.

  According to this configuration, it is possible to flow the cold air toward the center vent outlet by the cold air guide portion of the baffle plate. Thereby, the amount of cold air blown out from the center vent outlet increases.

  A seventh invention is characterized in that, in any one of the first to sixth inventions, a plurality of the hot air guide portions of the baffle plate are provided at intervals in the vehicle width direction.

  According to this configuration, since the warm air is distributed and flows into the rear seat passage, the temperature unevenness of the conditioned air for the rear seat occupant is less likely to occur.

  According to an eighth invention, in any one of the first to seventh inventions, an intermediate plate is provided at a central portion in the vehicle width direction of the air conditioning casing, and the baffle plate is integrally formed with the intermediate plate. It is characterized by.

  According to this configuration, by providing the intermediate plate at the center in the vehicle width direction of the air conditioning casing, for example, conditioned air having different temperatures can be generated and supplied on the driver seat side and the passenger seat side. By integrally molding the intermediate plate and the baffle plate, the number of parts can be reduced.

  According to a ninth invention, in any one of the first to eighth inventions, the heating heat exchanger is at least one of a heater core, an electric heater, and a refrigerant condenser through which cooling water of an engine mounted on the vehicle flows. It is characterized by being one.

  According to this configuration, it is possible to use an appropriate heat source according to the type of vehicle.

  According to a tenth aspect, in any one of the first to ninth aspects, the baffle plate is provided with a fixing plate portion that is press-fitted into the cold air passage in the air conditioning casing.

  According to this configuration, the baffle plate can be temporarily fixed to the air conditioning casing by press-fitting the fixing plate portion of the baffle plate into the cold air passage.

  According to the first aspect of the present invention, the hot air flowing out from the downstream end of the hot air passage is guided to the rear seat passage, and the cold air flowing out from the downstream end of the cold air passage is supplied to the foot supply passage. Since the baffle plate provided with the cold air guide for guiding is arranged inside the casing, the temperature of the conditioned air for the rear seat occupant and the temperature of the conditioned air for the foot can be optimized, and the passenger comfort Can be improved.

  According to 2nd invention, the cold wind guide part of a baffle plate can suppress the temperature rise of the conditioned air for foot by interrupting | blocking the flow of the warm air which flows into the foot supply path from the downstream end of a warm air path.

  According to the third aspect, the temperature reduction of the conditioned air for the rear seat occupant can be suppressed by reducing the amount of cool air flowing from the downstream end of the cool air passage to the rear seat passage by the hot air guide portion of the baffle plate.

  According to the fourth aspect of the invention, a gap for allowing the hot air to flow out can be formed between the opposing wall portion of the cold air guide portion of the baffle plate and the downstream end of the hot air passage. Resistance can be reduced.

  According to the fifth invention, the hot air guide portions and the cold air guide portions of the baffle plate are alternately arranged in the vehicle width direction, the hot air guide direction by the hot air guide portion, and the hot air guide by the cold air guide portion. Since the directions intersect each other, the direction of hot air and the direction of cold air can be set in any direction without causing interference with each other. Thereby, it becomes easy to set the temperature of the conditioned air for the rear seat occupant and the temperature of the conditioned air for the feet to the target temperatures.

  According to the sixth invention, since the cool air can be guided to the center vent outlet by the cool air guide portion of the baffle plate, the amount of the cool air blown out from the center vent outlet can be increased. Can be improved.

  According to the seventh aspect, since the warm air is distributed and flows into the rear seat passage, the temperature unevenness of the conditioned air for the rear seat occupant is less likely to occur, and passenger comfort is further improved. be able to.

  According to the eighth invention, the number of parts can be reduced by integrally forming the intermediate plate and the baffle plate.

  According to the ninth aspect, an appropriate heat source can be used depending on the vehicle.

  According to the tenth aspect, the baffle plate can be temporarily fixed to the air conditioning casing at the time of manufacturing the vehicle air conditioner.

It is the perspective view which looked at the air-conditioner for vehicles concerning Embodiment 1 from back. It is the figure which looked at the air conditioner for vehicles concerning Embodiment 1 from back. 1 is a front view of a vehicle air conditioner according to Embodiment 1. FIG. 1 is a right side view of a vehicle air conditioner according to Embodiment 1. FIG. 1 is a left side view of a vehicle air conditioner according to Embodiment 1. FIG. It is the VI-VI sectional view taken on the line in FIG. It is the VII-VII sectional view taken on the line in FIG. It is the perspective view which looked at the right casing component from the left. It is the IX section enlarged view of FIG. It is the perspective view which looked at the baffle plate from back. It is the figure which looked at the baffle plate from back. It is a left view of a baffle plate. It is a top view of a baffle plate. It is a perspective view explaining the point which assembles a right baffle plate constituent member to a right casing constituent member. It is a perspective view which shows the state which assembled | attached the right baffle plate structural member to the right casing structural member. It is a perspective view which shows the state which assembled | attached the right baffle plate structural member and the intermediate | middle plate to the right casing structural member. It is a perspective view which shows the intermediate | middle plate and baffle plate which concern on Embodiment 2. FIG. It is the figure which looked at the intermediate | middle plate and baffle plate which concern on Embodiment 2 from back. 6 is a left side view of an intermediate plate and a baffle plate according to Embodiment 2. FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
FIG. 1 shows a vehicle air conditioner 1 according to Embodiment 1 of the present invention. The vehicle air conditioner 1 is attached to the vehicle body in a state of being accommodated in an instrument panel (not shown) provided in, for example, the interior of the automobile. The vehicle air conditioner 1 includes a blower unit (not shown). The blower unit is configured to select and introduce one of the air inside the passenger compartment and the air outside the passenger compartment, and blow the air through the blower. The blower unit can be disposed on one side in the vehicle width direction.

  In the description of this embodiment, the front side of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear”, the left side of the vehicle is simply referred to as “left”, and the right side of the vehicle is simply referred to as “right”. To do. In this embodiment, the front, rear, left and right are defined on the assumption that the vehicle air conditioner 1 is mounted on the vehicle.

  As shown in FIGS. 6 and 7, the vehicle air conditioner 1 includes a cooling heat exchanger 2 that cools air for air conditioning, a heat exchanger 3 for heating that heats air for air conditioning, an electric heater 4, and a cooling system. An upper air mix damper 5 and a lower air mix damper 6 that determine the mixing ratio of the cold air cooled by the heat exchanger 2 and the hot air heated by the heating heat exchanger 3 and the electric heater 4, and for cooling It includes a heat exchanger 2, a heating heat exchanger 3, an electric heater 4, and an air conditioning casing 10 (shown in FIG. 1 and the like) that houses air mix dampers 5 and 6.

  As shown also in FIGS. 1-5, the air-conditioning casing 10 is comprised so that division | segmentation is possible in the intermediate part of the front-back direction. The front side portion of the air conditioning casing 10 is configured to be split at an intermediate portion in the vertical direction, and includes an upper casing constituent member 11 and a lower casing constituent member 12. The rear portion of the air conditioning casing 10 is configured to be splittable in an intermediate portion in the left-right direction, and includes a right casing constituent member 13 and a left casing constituent member 14. The upper casing constituent member 11, the lower casing constituent member 12, the right casing constituent member 13, and the left casing constituent member 14 are made of a resin material, and are fastened and integrated with each other by a fastening member or the like.

  As shown in FIG. 6, the cooling heat exchanger 2 is housed inside the upper casing component member 11 and the lower casing component member 12. Heat exchanger 3 for heating, electric heater 4 and air mix dampers 5 and 6 are housed inside right casing component 13 and left casing component 14.

  The vehicle air conditioner 1 also includes a defroster damper 20, a vent damper 21, a heat damper 22, and a rear seat vent damper 23. The defroster damper 20, the vent damper 21, the heat damper 22, and the rear seat vent damper 23 are on the right casing. The component member 13 and the left casing component member 14 are accommodated inside. The defroster damper 20, the vent damper 21, the heat damper 22, and the rear seat vent damper 23 are blowing direction switching dampers for switching the blowing direction of the conditioned air. That is, the vehicle air conditioner 1 generates conditioned air by mixing hot air and cold air so that the mixing ratio determined by the upper air mix damper 5 and the lower air mix damper 6 is obtained, and the generated conditioned air. Is supplied to each part of the passenger compartment according to the operation of the defroster damper 20, the vent damper 21, the heat damper 22, and the rear seat vent damper 23.

  Further, the vehicle air conditioner 1 includes a baffle plate 50, which will be described in detail later. The baffle plate 50 is a member for optimizing the temperature of the conditioned air by guiding the cold air and the hot air in a desired direction, and is disposed inside the air conditioning casing 10.

  As shown in FIG. 4, an air inlet 24 for introducing air for air conditioning is formed in the front portion of the right wall portion of the air conditioning casing 10. The air inlet 24 has a shape that is long in the vertical direction. A blower unit is connected to the air inlet 24.

  As shown in FIG. 1 etc., the defroster blower outlet 25 from which conditioned air blows off is formed in the upper wall part (upper part) of the air-conditioning casing 10. The defroster outlet 25 has a shape that is long in the left-right direction. The conditioned air blown from the defroster outlet 25 is supplied toward the inner surface of a vehicle windshield (not shown). A defroster duct (not shown) can be connected to the defroster outlet 25.

  A left vent outlet 26a, a right vent outlet 26b, and a center vent outlet 26c are formed behind the defroster outlet 25 in the upper wall portion of the air conditioning casing 10. The left vent outlet 26a opens to the left side portion of the air conditioning casing 10, and the conditioned air blown out from the left vent outlet 26a is supplied toward the upper body of the occupant seated on the left side of the front seat. The right vent outlet 26b opens to the right portion of the air conditioning casing 10, and the conditioned air blown out from the right vent outlet 26b is supplied toward the upper body of the occupant seated on the right side of the front seat. The center vent outlet 26c is open at the center in the vehicle width direction in the upper part of the air conditioning casing 10, that is, between the left vent outlet 26a and the right vent outlet 26b. The conditioned air blown from the center vent outlet 26c is mainly supplied toward the upper half of the occupant seated in the front seat. A vent duct (not shown) can be connected to the left vent outlet 26a, the right vent outlet 26b, and the center vent outlet 26c.

  As shown in FIG. 6 etc., the heat blower outlet 27 is formed in the intermediate part of the up-down direction in the rear wall part of the air-conditioning casing 10. As shown in FIG. The conditioned air blown out from the heat outlet 27 is supplied in the vicinity of the passenger's feet. The conditioned air blown from the heat outlet 27 can be supplied not only near the feet of the front seat occupant but also near the feet of the rear seat occupant. A heat duct (not shown) can be connected to the heat outlet 27.

  A rear seat outlet 28 is formed below the heat outlet 27 in the rear wall of the air conditioning casing 10. The conditioned air blown out from the rear seat outlet 28 is supplied to, for example, the upper body of an occupant seated in the rear seat (rear seat occupant). The rear seat outlet 28 has a shape that is long in the left-right direction, and is located in the center of the air-conditioning casing 10 in the left-right direction. A rear seat duct (not shown) extending to the vicinity of the rear seat can be connected to the rear seat outlet 28.

  Inside the air conditioning casing 10, a cooling heat exchanger arrangement passage 30 in which the cooling heat exchanger 2 is arranged, a hot air passage 31, an upper cold air passage 32, and a lower cold air passage (air passage) 33, A defroster passage 34, a vent passage 35, a heat passage (foot supply passage) 36, and a rear seat passage 37 are formed.

  The cooling heat exchanger arrangement passage 30 is formed in the front part inside the air conditioning casing 10. An air introduction port 24 communicates with the upstream end of the cooling heat exchanger arrangement passage 30 so that the entire amount of air-conditioning air blown from the blower unit is introduced into the cooling heat exchanger arrangement passage 30. It has become. The longitudinal cross section of the cooling heat exchanger arrangement passage 30 extends from the upper part to the lower part of the air conditioning casing 10, and extends from the left side to the right side of the air conditioning casing 10.

  The cooling heat exchanger 2 arranged in the cooling heat exchanger arrangement passage 30 is composed of an evaporator (evaporator) of a refrigeration cycle. The cooling heat exchanger arrangement passage 30 is configured such that the air passage surface extends in the vertical direction. The upper part of the cooling heat exchanger arrangement passage 30 is held by the upper casing component member 11, while the lower part of the cooling heat exchanger arrangement passage 30 is held by the lower casing component member 12. Refrigerant depressurized via a pressure reducing valve (not shown) flows into the cooling heat exchanger arrangement passage 30 and heat exchange between the refrigerant and air-conditioning air cools the air-conditioning air. It has come to be. Condensed water generated during cooling of the air-conditioning air is discharged to the outside of the air-conditioning casing 10 from a drain portion 10a (shown in FIG. 2 and the like) formed in the lower casing component 12.

  The warm air passage 31 is a passage through which the warm air heated by the heating heat exchanger 3 circulates. In this embodiment, the warm air heated by the electric heater 4 also circulates. The warm air passage 31 is formed in the middle in the vertical direction inside the air conditioning casing 10 and extends in the front-rear direction. The vertical cross section of the hot air passage 31 is set to be narrower than the vertical cross section of the cooling heat exchanger arrangement passage 30.

  The upstream end of the hot air passage 31 communicates with an intermediate portion in the vertical direction at the downstream end of the cooling heat exchanger arrangement passage 30. A heat exchanger 3 for heating and an electric heater 4 are arranged in the hot air passage 31. The heat exchanger 3 for heating is comprised by the heater core through which the cooling water of the engine (not shown) mounted in the vehicle flows. The air for air conditioning is heated by heat exchange between the cooling water of the engine flowing through the heat exchanger 3 for heating and the air for air conditioning. The electric heater 4 has a heating element (not shown) that generates heat by supplying electric power from, for example, a vehicle battery (not shown), and air conditioning air is generated by the heat generated by the heating element. Is to be heated. The electric heater 4 may be omitted. Instead of the heat exchanger 3 for heating, an electric heater 4 may be used, or a refrigerant condenser that condenses the refrigerant may be used. Moreover, these heat sources can be used in arbitrary combinations, for example, a refrigerant condenser and the electric heater 4 can be used in combination. In the case of an electric vehicle, since there is no engine, a refrigerant condenser or an electric heater 4 can be used.

  The upper cold air passage 32 is provided above the hot air passage 31 in the air conditioning casing 10. The upper cold air passage 32 extends in the front-rear direction, and the upstream end communicates with the upper portion at the downstream end of the cooling heat exchanger arrangement passage 30.

  The lower cold air passage 33 is provided below the hot air passage 31 inside the air conditioning casing 10. The lower cold air passage 33 extends in the front-rear direction, and the upstream end communicates with the lower portion at the downstream end of the cooling heat exchanger arrangement passage 30. The lower cold air passage 33 extends rearward along the bottom wall portion of the air conditioning casing 10 and then bends upward.

  The cold air cooled by the cooling heat exchanger 2 flows through the upper cold air passage 32 and the lower cold air passage 33. The cold air flowing through the upper cold air passage 32 and the lower cold air passage 33 flows by bypassing the hot air passage 31.

  The defroster passage 34 is provided above the upper cold air passage 32 in the air conditioning casing 10 and extends in the vertical direction. The upstream end (lower end) of the defroster passage 34 is located near the upstream end of the upper cold air passage 32. The downstream end (upper end portion) of the defroster passage 34 is connected to the defroster outlet 25.

  The vent passage 35 is provided above the upper cold air passage 32 in the air conditioning casing 10 and extends in the vertical direction. The upstream end (lower end) of the vent passage 35 is located near the upstream end of the upper cold air passage 32. The downstream end (upper end) of the vent passage 35 is connected to the left vent outlet 26a, the right vent outlet 26b, and the center vent outlet 26c.

  The rear seat passage 37 is provided in the lower part of the air conditioning casing 10 and is a passage for supplying conditioned air to the rear seat occupant. The rear seat passage 37 extends in the front-rear direction. The upstream end (front end) of the rear seat passage 37 is positioned near the downstream end of the lower cold air passage 33. The downstream end (rear end) of the rear seat passage 37 is connected to the rear seat outlet 28.

  The heat passage 36 is provided in the air conditioning casing 10 below the upper cold air passage 32 and above the lower cold air passage 33. That is, the heat passage 36 is provided above the rear seat passage 37. And the heat channel | path 36 is for supplying conditioned air to a passenger | crew's leg vicinity.

  Inside the air conditioning casing 10, an intermediate vertical wall portion 10 b extending in the vertical direction is formed in a portion farther forward than the heat exchanger 3 for heating. Further, in the air conditioning casing 10, an upper vertical wall portion 10c extending in the vertical direction is formed at a portion spaced upward from the intermediate vertical wall portion 10b. Further, in the air conditioning casing 10, a lower vertical wall portion 10d extending in the vertical direction is formed at a portion spaced downward from the intermediate vertical wall portion 10b.

  An upper opening 10e is formed between the lower end portion of the upper vertical wall portion 10c and the upper end portion of the intermediate vertical wall portion 10b, and the upper end portion of the lower vertical wall portion 10d and the intermediate vertical wall portion 10b A lower opening 10f is formed between the lower end portion. The upper air mix damper 5 operates in the upper opening 10e, and the amount of cold air flowing from the cooling heat exchanger arrangement passage 30 into the upper cold air passage 32, and the cooling air from the heat exchanger arrangement passage 30 to the hot air passage 31. The ratio with the amount of cold air flowing into the upper side is changed.

  That is, the upper air mix damper 5 has a rotating shaft 5a extending in the left-right direction and a plate portion 5b extending in the radial direction of the rotating shaft 5a. The rotation shaft 5 a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. When the upper air mix damper 5 is fully rotated upward about the rotation shaft 5a, the amount of cold air flowing into the upper cold air passage 32 from the cooling heat exchanger arrangement passage 30 becomes 0, and the cooling heat exchanger arrangement passage 30 is obtained. The cool air flows into the upper side of the hot air passage 31 from the upper opening 10e. On the other hand, when the upper air mix damper 5 is rotated all the way downward around the rotation shaft 5a, the amount of cold air flowing from the cooling heat exchanger arrangement passage 30 into the hot air passage 31 becomes 0, and the cooling heat exchanger arrangement is performed. The cold air in the passage 30 flows into the upper cold air passage 32 from the upper opening 10e.

  When the upper air mix damper 5 is in the intermediate rotational position, the cold air in the cooling heat exchanger arrangement passage 30 flows into both the upper cold air passage 32 and the hot air passage 31 from the upper opening 10e. The ratio between the amount of cold air flowing into the upper cold air passage 32 and the amount of cold air flowing into the hot air passage 31 to be heated is changed depending on the rotational position of the upper air mix damper 5. That is, the upper air mix damper 5 is for determining the mixing ratio between the cold air cooled by the cooling heat exchanger 2 and the hot air heated by the heating heat exchanger 3 (and the electric heater 4). It is.

  The lower air mix damper 6 operates in the lower opening 10f, and the amount of cold air flowing from the cooling heat exchanger arrangement passage 30 into the lower cold air passage 33 and the cooling heat exchanger arrangement passage 30 The ratio with the amount of cold air flowing into the lower side of the hot air passage 31 is changed.

  That is, the lower air mix damper 6 has a rotating shaft 6a extending in the left-right direction and a plate portion 6b extending in the radial direction of the rotating shaft 6a. The rotation shaft 6 a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. When the lower air mix damper 6 is rotated all the way downward around the rotation axis 6a, the amount of cold air flowing from the cooling heat exchanger arrangement passage 30 into the lower cold air passage 33 becomes zero, and the cooling heat exchanger arrangement is performed. The cold air in the passage 30 flows into the lower side of the hot air passage 31 from the lower opening 10f. On the other hand, when the lower air mix damper 6 is fully rotated upward around the rotation shaft 6a, the amount of cold air flowing into the hot air passage 31 from the cooling heat exchanger arrangement passage 30 becomes 0, and the cooling heat exchanger The cold air in the arrangement passage 30 flows into the lower cold air passage 33 from the lower opening 10f.

  When the lower air mix damper 6 is in the intermediate rotational position, the cold air in the cooling heat exchanger arrangement passage 30 flows into both the lower cold air passage 33 and the hot air passage 31 from the lower opening 10f. The ratio of the amount of cold air flowing into the lower cold air passage 33 and the amount of cold air flowing into the hot air passage 31 to be heated is changed depending on the rotational position of the lower air mix damper 6. That is, the lower air mix damper 6 determines the mixing ratio between the cold air cooled by the cooling heat exchanger 2 and the hot air heated by the heating heat exchanger 3 (and the electric heater 4). Is.

  A defroster damper 20 for opening and closing the defroster passage 34 is disposed in the defroster passage 34. The defroster damper 20 has a rotation shaft 20a extending in the left-right direction and a plate portion 20b extending in the radial direction of the rotation shaft 20a. The rotating shaft 20 a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. The defroster passage 34 is opened and closed as the defroster damper 20 rotates about the rotation shaft 20a.

  A vent damper 21 for opening and closing the vent passage 35 is disposed in the vent passage 35. The vent damper 21 has a rotation shaft 21a extending in the left-right direction, and a plate portion 21b supported by the rotation shaft 21a in a state of being radially separated from the rotation shaft 21a. The rotation shaft 21 a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. The vent path 35 is opened and closed as the vent damper 21 rotates about the rotation shaft 21a.

  A heat damper 22 for opening and closing the heat passage 36 is disposed in the heat passage 36. The heat damper 22 has a rotating shaft 22a extending in the left-right direction and a plate portion 22b extending in the radial direction of the rotating shaft 22a. The rotation shaft 22a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. As the heat damper 22 rotates around the rotation shaft 22a, the heat passage 36 is opened and closed.

  The rear seat passage 37 is provided with a rear seat vent damper 23 for opening and closing the rear seat passage 37. The rear-seat vent damper 23 includes a rotation shaft 23a extending in the left-right direction and a plate portion 23b extending in the radial direction from the rotation shaft 23a. The rotation shaft 23 a is supported so as to be rotatable with respect to the left side wall portion and the right side wall portion of the air conditioning casing 10. The rear seat passage damper 37 is opened and closed by rotating the rear seat vent damper 23 around the rotation shaft 23a.

(Structure of baffle plate 50)
The baffle plate 50 is made of a resin material, and is configured by combining a right baffle plate constituent member 50A and a left baffle plate constituent member 50B as shown in FIG. 10 and the like, as shown in FIG. A rear side of the air conditioning casing 10 is disposed at the lower part. The baffle plate 50 is not composed of two members, the right baffle plate constituting member 50A and the left baffle plate constituting member 50B, and may be an integrally molded product.

  The baffle plate 50 includes a right hot air guide 51 and a left hot air guide 52, a right cold air guide 53, a left cold air guide 54, and a central cold air guide 55. The right hot air guide 51 and the left hot air guide 52 are portions for guiding the hot air flowing out from the downstream end of the hot air passage 31 to the rear seat passage 37. As shown in FIG. 6 and the like, the right-side hot air guide portion 51 and the left-side hot air guide portion 52 form a passage that extends obliquely downward from the lower side of the downstream end of the hot air passage 31 toward the rear side. The downstream ends of the right hot air guide portion 51 and the left hot air guide portion 52 are connected to the upper side of the upstream end of the rear seat passage 37. As shown in FIG. 10, the right-side hot air guide 51 and the left-side hot air guide 52 are arranged at intervals in the left-right direction at a portion near the center in the left-right direction of the baffle plate 50.

  As shown in FIG. 7, the right side cold air guide part 53, the left side cold air guide part 54, and the central cold air guide part 55 are parts for guiding the cold air flowing out from the downstream end of the lower side cold air passage 33 to the heat passage 36. . The right side cold air guide part 53, the left side cold air guide part 54 and the central cold air guide part 55 form a passage extending from the downstream end of the lower side cold air passage 33 upward, that is, toward the upstream end of the heat passage 36. The downstream ends of the right side cold air guide part 53, the left side cold air guide part 54 and the central cold air guide part 55 are located in the vicinity of the upstream end of the heat passage 36.

  As shown in FIG. 10, the right cold air guide 53 is provided at the right end of the baffle plate 50 and is formed to open to the right. An opening portion on the right side of the right cool air guide portion 53 is closed by the inner surface of the right wall portion of the air conditioning casing 10 so that a passage extending toward the upstream end of the heat passage 36 is formed.

  The left cold air guide portion 54 is provided at the left end of the baffle plate 50 and is formed to open to the left side. An open portion on the left side of the left cold air guide portion 54 is closed by the inner surface of the left wall portion of the air conditioning casing 10 to form a passage extending toward the upstream end of the heat passage 36.

  The central cold air guide portion 55 is provided at the central portion in the left-right direction of the baffle plate 50, and is formed by combining the right baffle plate constituent member 50A and the left baffle plate constituent member 50B. A right hot air guide unit 51 is disposed on the right side of the central cold air guide unit 55, and a left hot air guide unit 52 is disposed on the left side of the central cold air guide unit 55. Accordingly, the hot air guide portions 51, 52 and the cold air guide portions 53, 54, 55 of the baffle plate 50 are alternately arranged in the vehicle width direction, and when viewed from the vehicle width direction (left-right direction), The direction of hot air guided by the wind guides 51 and 52 and the direction of hot air guided by the cold air guides 53, 54, and 55 cross each other. Moreover, the central cold wind guide part 55 is provided in the vehicle width direction center part of the air-conditioning casing 10, and guides cold wind upwards.

  As shown in FIG. 7, the cold air guide portions 53, 54, 55 of the baffle plate 50 are arranged so as to block the flow of hot air flowing from the downstream end of the hot air passage 31 to the heat passage 36. That is, the front side wall portions 53a, 54a, 55a (also shown in FIG. 10) constituting the cold air guide portions 53, 54, 55 extend in the vertical direction and face the lower side of the downstream end of the hot air passage 31. The front wall portions 53a, 54a, 55a are disposed between the downstream end of the hot air passage 31 and the heat passage 36, so that the hot air passage 31 It is difficult for the warm air flowing out from the downstream end to flow directly into the heat passage 36. Accordingly, the cool air guide portions 53, 54, and 55 of the baffle plate 50 block the flow of warm air flowing from the downstream end of the warm air passage 31 to the heat passage 36, thereby suppressing the temperature rise of the conditioned air for the feet.

  Further, the front side wall portions 53 a, 54 a, 55 a of the cold air guide portions 53, 54, 55 are formed so as to be separated from the downstream end of the hot air passage 31 toward the upper side. Thereby, a gap for allowing hot air to flow out is formed between the front side wall portions 53 a, 54 a, 55 a of the cold air guide portions 53, 54, 55 of the baffle plate 50 and the downstream end of the hot air passage 31. It is possible to reduce the flow resistance of hot air.

  Further, the hot air guide portions 51 and 52 of the baffle plate 50 are arranged so as to reduce the amount of cold air flowing from the downstream end of the lower cold air passage 33 to the rear seat passage 37. That is, for example, as shown in FIG. 6, the lower wall portions 51a and 52a (also shown in FIG. 10) of the hot air guide portions 51 and 52 are inclined so as to be located downward toward the rear side. It arrange | positions so that the downstream end of the channel | path 33 may be opposed. And it becomes difficult to flow toward the channel | path 37 for the rear seats when the cold wind which flows out out of the lower side cold wind channel | path 33 hits the lower wall parts 51a and 52a.

  As shown in FIG. 10, a right opening 56 is formed between the right hot air guide 51 and the right cold air guide 53 in the baffle plate 50. Further, a left opening 57 is formed between the left hot air guide 52 and the left cold air guide 54 in the baffle plate 50. Air flows through the right opening 56 and the left opening 57.

  The baffle plate 50 includes a right-side fixing plate portion 58 and a left-side fixing plate portion 59 as press-fit portions that are press-fitted into the lower cold air passage 33 in the air conditioning casing 10. The right fixing plate 58 extends downward from the right baffle plate constituting member 50 </ b> A, extends in the vertical direction, and further extends in the front-rear direction along the lower cold air passage 33. The upper edge portion of the right fixing plate portion 58 is in contact with the upper surface of the lower cold air passage 33 formed in the right casing component 13, and the lower edge portion of the right fixing plate portion 58 is the lower cold air passage 33. The right-side fixing plate portion 58 is press-fitted into the downstream side of the lower cold air passage 33 by contacting the lower surface.

  Further, the left fixing plate portion 59 extends downward from the left baffle plate constituting member 50 </ b> B, extends in the vertical direction, and further extends in the front-rear direction along the lower cold air passage 33. The upper edge portion of the left fixing plate portion 59 is in contact with the upper surface of the lower cold air passage 33 formed in the left casing component member 14, and the lower edge portion of the left fixing plate portion 59 is the lower cold air passage 33. The left fixing plate 59 is pressed into the downstream side of the lower cold air passage 33 by contacting the lower surface. That is, the right baffle plate constituent member 50A can be temporarily fixed to the right casing constituent member 13, and the left baffle plate constituent member 50B can be temporarily fixed to the left casing constituent member 14.

(Baffle plate positioning structure)
As shown in FIG. 9, the right casing constituent member 13 is formed with a positioning recess (engagement portion) 13d for positioning the right baffle plate constituent member 50A of the baffle plate 50 in a temporarily fixed state. The positioning recess 13 d is formed on the lower surface of the lower cold air passage 33 in the right casing component 13. The positioning concave portion 13d is engaged by fitting a part of the lower edge portion of the right-side fixing plate portion 58. A similar positioning structure can be provided on the left casing component 14.

(Baffle plate assembly procedure)
Next, a procedure for assembling the baffle plate 50 will be described. The right baffle plate component member 50A is temporarily fixed to the right casing component member 13 and the left baffle plate component member 50B is temporarily fixed to the left casing component member 14, and then the right casing component member 13 and the left casing component member 14 are combined. .

  That is, as shown in FIG. 14, when the right baffle plate constituent member 50 </ b> A is temporarily fixed to the right casing constituent member 13, the right fixing plate portion 58 of the right baffle plate constituent member 50 </ b> A is attached to the right casing constituent member 13. Press fit into the lower cold air passage 33. The state after press-fitting is shown in FIG. When the right fixing plate portion 58 is press-fitted into the lower cold air passage 33 of the right casing component 13, the lower edge portion of the right fixing plate portion 58 is engaged with the positioning recess 13d and positioned. Similarly, the left fixing plate portion 59 of the left baffle plate component 50B is press-fitted into the lower cold air passage 33 of the left casing component 14 to temporarily fix the left baffle plate component 50B to the left casing component 14. Further, the heating heat exchanger 3, the electric heater 4, the air mix dampers 5, 6 and the like are assembled to the right casing constituent member 13 or the left casing constituent member 14.

  Moreover, as shown in FIG. 16, the intermediate | middle plate 60 is assembled | attached on the right side casing structural member 13. As shown in FIG. The intermediate plate 60 is a member for partitioning the inside of the air conditioning casing 10 into a left side and a right side, and extends in the front-rear direction and the vertical direction inside the air conditioning casing 10. The space on the right side of the intermediate plate 60 in the air conditioning casing 10 is a space for generating conditioned air to be supplied to the right side region of the passenger compartment. It becomes the space which produces | generates the conditioned air supplied to the left side area | region. That is, by providing the intermediate plate 60, the left and right independent temperature control type vehicle air conditioner 1 can be obtained. The intermediate plate 60 may be omitted.

Thereafter, when the right casing component 13 and the left casing component 14 are combined, the right baffle plate component 50A and the left baffle plate component 50B are combined to form the baffle plate 50. When the right casing component 13 and the left casing component 14 are combined, the right baffle plate component 50A and the left baffle plate component 50B are temporarily fixed. During the combination, the right baffle plate component 50A and the left baffle plate component 50B do not fall and are not displaced. Thereby, the assembly workability is improved.

(Effect of embodiment)
According to the vehicle air conditioner 1 according to this embodiment, since the lower cold air passage 33 is provided below the hot air passage 31, the cold air easily flows to the lower part of the air conditioning casing 10. Since the rear seat passage 37 is provided in the lower part, the structure allows the cool air to easily flow through the rear seat passage 37. Since the warm air flowing out from the downstream end of the wind passage 31 is guided to the rear seat passage 37, the temperature of the conditioned air for the rear seat occupant becomes appropriate.

  Further, since the hot air passage 31 is provided above the lower cold air passage 33 and the heat passage 36 is provided above the rear seat passage 37, the hot air easily flows into the heat passage 36. However, since the cold air flowing out from the downstream end of the lower cold air passage 33 is guided to the heat passage 36 by the right cold air guide portion 53, the left cold air guide portion 54 and the central cold air guide portion 55 of the baffle plate 50, the harmony for the feet The air temperature will also be appropriate. Thereby, a passenger | crew's comfort can be improved.

  Further, the right cold air guide 53, the left cold air guide 54, and the central cold air guide 55 of the baffle plate 50 block the flow of hot air flowing from the downstream end of the hot air passage 31 to the heat passage 36, so that the conditioned air for the feet. Temperature rise can be suppressed.

  In addition, the right-side hot air guide 51 and the left-side hot air guide 52 of the baffle plate 50 reduce the amount of cool air flowing from the downstream end of the lower cold air passage 33 to the rear seat passage 37, so that the conditioned air for the rear seat passengers. Can be suppressed.

  Further, the hot air is caused to flow between the right side cold air guide part 53 of the baffle plate 50, the left side cold air guide part 54 and the opposing wall parts 53 a, 54 a, 55 a of the central cold air guide part 55 and the downstream end of the hot air passage 31. Therefore, the flow resistance of the hot air can be reduced.

  Further, the right side hot air guide part 51 and the left side hot air guide part 52 of the baffle plate 50, the right side cold air guide part 53, the left side cold air guide part 54, and the central cold air guide part 55 are alternately arranged in the vehicle width direction, and Since the hot air guide direction by the wind guide portions 51 and 52 and the hot air guide direction by the cold air guide portions 53, 54 and 55 intersect, the hot air guide direction and the cold air guide direction are mutually It can be set in any direction without causing interference. Thereby, it becomes easy to set the temperature of the conditioned air for the rear seat occupant and the temperature of the conditioned air for the feet to the target temperatures.

  Further, the baffle plate 50 is provided with the right side fixing plate portion 58 and the left side fixing plate portion 59 so that the baffle plate 50 is temporarily fixed to the air conditioning casing 10 when the vehicle air conditioner 1 is manufactured. Workability becomes easy.

(Embodiment 2)
FIGS. 17-19 shows a part of the vehicle air conditioner 1 which concerns on Embodiment 2 of this invention. The second embodiment is different from the first embodiment in that an intermediate plate 60 is provided at the center of the air conditioning casing 10 in the vehicle width direction, and the baffle plate 50 is integrally formed with the intermediate plate 60. Since these are the same as those in the first embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof will be omitted.

  A baffle plate 50 is integrally formed below the intermediate plate 60 so as to protrude in the left-right direction. In the second embodiment, the same operational effects as in the first embodiment can be obtained, and the baffle plate 50 can be also assembled at the same time by assembling the intermediate plate 60 to the right casing constituent member 13 or the left casing constituent member 14. it can. In addition, the number of parts can be reduced by integrally forming the baffle plate 50 on the intermediate plate 60.

  The above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  As described above, the vehicle air conditioner according to the present invention can be mounted on, for example, an automobile.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 2 Cooling heat exchanger 3 Heating heat exchanger 5 Upper air mix damper 6 Lower air mix damper 10 Air conditioning casing 31 Hot air passage 33 Lower cold air passage 36 Heat passage (foot supply passage)
37 Rear seat passage 50 Baffle plate 51 Right side hot air guide part 52 Left side hot air guide part 53 Right side cold air guide part 53a Front side wall part (opposing wall part)
54 Left cold air guide 54a Front side wall (opposite wall)
55 Central cold air guide part 55a Front side wall part (opposite wall part)
58,59 Fixing plate part 60 Intermediate plate

Claims (10)

A cooling heat exchanger for cooling the air-conditioning air;
A heat exchanger for heating air for air conditioning,
An air mix damper for determining a mixing ratio between the cold air cooled by the cooling heat exchanger and the hot air heated by the heating heat exchanger;
The cooling heat exchanger, the heating heat exchanger and an air conditioning casing that houses the air mix damper,
A vehicle air conditioner configured to generate conditioned air by mixing hot air and cold air so as to have a mixing ratio determined by the air mix damper, and to supply the generated conditioned air to each part of the passenger compartment. In
Inside the air conditioning casing, there is a hot air passage through which the hot air heated by the heating heat exchanger flows, and cold air that is provided below the hot air passage and is cooled by the cooling heat exchanger. A cool air passage that circulates, a rear seat passage that is provided in the lower part of the air conditioning casing and supplies conditioned air to the rear seat occupant, and is provided above the rear seat passage and supplies conditioned air to the vicinity of the passenger's feet. A foot supply passage is formed,
Inside the casing, there is a hot air guide for guiding the hot air flowing out from the downstream end of the hot air passage to the rear seat passage, and the cold air flowing out from the downstream end of the cold air passage is supplied by the foot A vehicular air conditioner, comprising a baffle plate provided with a cold air guide for guiding to a vehicle passage. In the vehicle air conditioner according to claim 1,
The vehicle air conditioner, wherein the cold air guide portion of the baffle plate is disposed so as to block a flow of hot air flowing from a downstream end of the hot air passage to the foot supply passage. The vehicle air conditioner according to claim 1 or 2,
The vehicle air conditioner characterized in that the hot air guide portion of the baffle plate is disposed so as to reduce the amount of cold air flowing from the downstream end of the cold air passage to the rear seat passage. In the vehicle air conditioner according to any one of claims 1 to 3,
The cold air guide portion of the baffle plate has an opposing wall portion that extends in the vertical direction and is arranged to face the downstream end of the hot air passage,
The vehicular air conditioner is characterized in that the opposing wall portion is formed so as to move away from the downstream end of the warm air passage as it goes upward. In the vehicle air conditioner according to any one of claims 1 to 4,
The hot air guide portions and the cold air guide portions of the baffle plate are alternately arranged in the vehicle width direction,
A vehicle air conditioner characterized in that when viewed from the vehicle width direction, the hot air guiding direction by the hot air guiding portion intersects the hot air guiding direction by the cold air guiding portion. In the vehicle air conditioner according to any one of claims 1 to 5,
A center vent outlet for supplying conditioned air to the upper half of the front seat occupant is formed in the vehicle width direction center in the upper part of the air conditioning casing,
The vehicle air conditioner is characterized in that the cold air guide portion of the baffle plate is provided at a central portion in the vehicle width direction of the air conditioning casing and guides the cold air upward. In the vehicle air conditioner according to any one of claims 1 to 6,
The vehicle air conditioner, wherein a plurality of the hot air guide portions of the baffle plate are provided at intervals in the vehicle width direction. In the vehicle air conditioner according to any one of claims 1 to 7,
An intermediate plate is provided at the center of the air conditioning casing in the vehicle width direction,
The vehicle air conditioner characterized in that the baffle plate is integrally formed with the intermediate plate. In the vehicle air conditioner according to any one of claims 1 to 8,
The vehicle air conditioner is characterized in that the heat exchanger for heating is at least one of a heater core, an electric heater, and a refrigerant condenser through which cooling water of an engine mounted on the vehicle flows. The vehicle air conditioner according to any one of claims 1 to 9,
An air conditioner for vehicles, wherein the baffle plate is provided with a fixing plate portion that is press-fitted into the cold air passage in the air conditioning casing.

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